Fan

FIELD: machine building.

SUBSTANCE: bladeless fan includes a nozzle and an air flow creation device through the nozzle; besides, the nozzle includes an internal channel, an outlet section intended for air flow reception from the internal channel and a surface that adjoins the outlet section, above which the outlet section is made so that it guides the air flow; the nozzle is installed on a rack with adjustable height.

EFFECT: increasing safety when using a fan.

19 cl, 15 dwg

 

The present invention relates to a fan. Preferably the invention relates to a household fan, such as a floor fan, used to create air circulation and air flow in a room, office or other conditions.

Ordinary household fan, as a rule, contains a set of vanes or blades mounted for rotation about an axis, and a drive device designed for rotating set of blades and, thus, create an air flow. Movement and air circulation produces the cooling wind or light breeze and, as a result, the user feels a cooling effect, because the heat is dissipated through convection and evaporation.

The size and shape of such fans may be different. For example, the diameter of the ceiling fan may be at least 1 m and they can be hung to the ceiling to create a downward air flow, cooling the room. On the other hand, the diameter of desktop fans can often be about 30 cm, and typically, these fans are made in the form of free-standing and portable devices. Located on floor fans usually have an adjustable height stand, which supports the drive device and the set of blades designed the landscapes to create an air flow, consumption, which typically ranges from 300 to 500 l/C.

The lack of fans of this type is that the air flow created by the rotating fan blades, is usually not uniform. This is due to changes along the surface of the blades or along the outer surface of the fan. The degree of change may vary from one type of fan to another and even from one fan to another. These changes lead to the creation of an uneven or "intermittent" air flow that can be felt as a series of pulsations of the air, and they can be very uncomfortable to the user.

In a domestic environment it is not desirable that the portion of the device acted out or so that the user can touch any moving parts such as blades. Outdoor fans typically include a casing surrounding the blades, you need to prevent injury from contact with rotating blades, but may complicate the cleaning of these covers. Moreover, because of the fastening device of the actuator and rotating blades on top of the rack, the center of gravity of the outdoor fan is usually biased towards the top of the rack. Because of this outdoor fan is prone to fall if it is accidentally hurt, if only the hour is not provided with a relatively wide or heavy base, which may be undesirable DL the user.

In the present invention is proposed safe fan containing a nozzle and means for creating air flow through the nozzle, and the nozzle has an internal channel, the final section intended for receiving the air flow from the inner channel, and a surface that is adjacent to the exhaust section and over which the outlet section is configured to direct airflow, and a nozzle mounted on a height-adjustable stand.

Thanks to the safe use of the fan air stream can be created without using a blade fan. Compared with paddle fan, safe fan is less complicated and has fewer moving parts. In addition, without the use of a centrifugal fan to push air stream from the fan, a relatively uniform air stream may be generated and sent to the bathroom or to the user. The air jet can be effectively transferred from the outlet to the loss of small amounts of energy and speed to the turbulence.

The term "safe" is used to describe a fan in which the air flow is emitted or ejected forward from the fan without the use of moving blades. Therefore, besla astoi fan can be regarded as a fan, contains the output area or the area of emission, in which no moving blade and from which airflow is directed to the user or in the bathroom. In the output area safe fan can enter the primary air flow, created by one of many different sources, such as pumps, generators, motors or other devices for the transmission fluid and which may be designed to create an air flow rotating device such as a rotor of the motor and/or impeller. The primary air flow can pass from the space of the room or other environment outside of the fan and then move back into the space of the room through the outlet.

Therefore, it is not intended that the description of the fan as safe fan describes the energy source and components such as engines, needed to perform the secondary functions of the fan. Examples of the secondary functions of the fan can be run, adjustment and oscillation fan.

The shape of the nozzle of the fan must meet the following requirements: contain the space to accommodate blade fan. Preferably, the nozzle surrounded the hole. The nozzle may be ring-shaped nozzle, the height of which p is edocfile ranges from 200 to 600 mm, more preferably from 250 to 500 mm

Preferably, the exhaust area of the nozzle surrounded the hole and preferably, the outlet section was circular. Preferably, the nozzle is contained inside and the outside of the housing that define the exhaust area of the nozzle. Preferably, each piece was formed from the corresponding annular element, but each part can be made of several elements, interconnected, or in any way collected to form the specified part. It is preferable to form the outer part of the case was such as to overlap the inside of the shell. This can give the opportunity to define the outlet of the exhaust section between the overlapping parts of the outer surface of the inner part of the housing and the inner surface of the outer housing of the nozzle. Preferably, the outlet was made in the form of cracks and, preferably, its width was varied from 0.5 mm to 5 mm Nozzle can contain multiple separators, designed for the separation of the overlapping portions of the inside of the housing and the outer housing of the nozzle. This can help maintain essentially uniform width of the outlet of the exhaust section of the SAI is ug hole nozzle. Preferably, the separators were placed at equal distances along the outlet.

Preferably, the inner channel was continuous, more preferably annular, and preferably, to form the inner channel was to divide the air flow into two air flow, which flow in opposite directions around the hole. Preferably, the inner channel was also identified internal part of the body and the external body portion of the nozzle.

Preferably, the fan contains a tool that is designed to ensure oscillation of the nozzle so that the air stream ranged in an arc, preferably in the range from 60 to 120. For example, the base of the stand may include a tool designed to fluctuations in the upper part of the base that is attached to the nozzle, relative to the bottom of the base.

As mentioned above, the nozzle includes a surface that is adjacent to the exhaust section and over which the exhaust may be directed out of the air stream. Preferably, this surface was the Coanda surface, and form the outer surface of the inner part of the body of the nozzle such was to determine the Coanda surface. Preferably, the surface of the Coanda was located in the Rog holes. The surface is a well-known Coanda surface which, when the flow of fluid emerging from the outlet close to the surface, there is the Coanda effect. Fluid tends to flow close over the surface, almost "sticking" to the surface or "holding" for her. The Coanda effect is a proven, well-documented way of Hobbies, in which the primary air flow is directed over the Coanda surface. Description of the properties of the Coanda surface and the action of the fluid flow flowing over the surface of the Coanda can be found in articles such as article Reba, the magazine Scientific American, volume 214, June 1966, pages from 84 to 92. Through the use of the Coanda surface, the air coming from the vent area, suck through the hole larger amount of air on the outside of the fan.

In the present invention, the air flow created by the fan enters the nozzle. In the following description, this air flow will be called the primary air flow. The primary air flow comes out of the exhaust area of the nozzle and preferably passes over the Coanda surface. The primary air stream entrains the air around the exhaust area of the nozzle, which acts as an amplifier of the air flow, intended for supply to the user as the primary air flow, and entrained air. Entrained air will be called secondary air flow. The secondary air flow is sucked out of the room, area or external environment of the exhaust area of the nozzle and, by moving from other areas around the fan and passes mostly through the opening defined by the nozzle. The primary air stream directed over the Coanda surface and combined with the entrained secondary air flow, total air flow, ejected or pushed out of the orifice defined by the nozzle. Preferably, the entrainment of air surrounding the exhaust area of the nozzle, was such that the primary air flow was increased at least five times, more preferably at least ten times, while maintaining the overall uniformity of the output. Maximum air flow to air flow created by the fan, is preferably in the range from 300 to 800 l/s, more preferably from 400 to 700 l/C.

Preferably, the nozzle is kept expanding surface located on the stream after the Coanda surface. It is preferable to form the outer surface of the inner part of the body of the nozzle was such as to define an expanding surface.

The nozzle is installed nereguliruemoy rack. Preferably, the means for creating an air stream was located in the rack so that the fan had a compact appearance. The rack may include a tube that is designed to move the air flow in the nozzle. Thus, the rack can serve as a support for the nozzle, through which emit air flow created by the fan, and to move the created air flow in the nozzle. The means for creating air flow through the nozzle may be positioned at the bottom of the rack, thereby the center of gravity of the fan is lower in comparison with the known outdoor fan in which the fan blade and drive for blade fan is connected with the top of the rack, and thereby the fan less inclined to fall if it hurt. For example, in a preferred variant of the invention, the stand comprises a base, which is a tool for generating air flow, and the tube is located between the substrate and the nozzle. Alternatively, the means for creating the air flow can be placed in the tube.

Preferably, the means for creating air flow in the tube contained the impeller, the motor is designed to rotate the impeller, and a diffuser located downstream after the impeller. It is preferable that the impeller was the impeller with an oblique flow. Preferably, the engine was brushless DC motor to avoid friction losses and the absence of carbon dust from the brushes used in conventional brush-type motors. Reduction of carbon dust and emissions, it is advisable to clean or sensitive to contamination environments, such as hospital or in the presence of people suffering from allergies. Although induction motors are commonly used in fans, also does not contain brushes, brushless DC motors can provide a much wider range of operating speeds compared to induction motors.

Preferably, the diffuser contained set of spiral blades, resulting from the diffuser enters the spiral air flow. Since the air flow through the tube, in General, is directed in the axial or longitudinal direction, it is preferable that the fan contained means of the direction of air flow exiting the diffuser tube. This can reduce loss inside the fan. Preferably, the means of air flow direction contained numerous blades, each of which is designed to direct the relevant part of the air flow leaving the diffuser in the direction of the tube. These blades can be dissolved, and the juxtaposed on the inner surface of the guide the air element, installed on top of the cone, and it is preferable that these blades were located essentially at equal distances from each other. Tool air flow direction can also contain several radial blades arranged at least partially inside the tube, with each radial vane adjacent to the corresponding blades of the above sets of blades. These radial blades may define multiple axial or longitudinal channels, which are located in the tube and each of which receives a corresponding part of the air flow channel defined by the set of blades. Preferably, these parts of the air flow was connected inside the tube.

The tube may contain a base mounted on the stand base, and a number of cylindrical elements connected with the base of the tube. Curved blades can be positioned at least partially within the base tube. Axial blades can be positioned at least partially within the funds intended for the connection of one of the cylindrical elements with the base of the tube. The linking may contain air pipe or other cylindrical element, intended for accommodation of one of the cylindrical elements.

Next, you will op the San one variant embodiment of the invention with reference to the accompanying drawings.

Figure 1 shows a fan in which the telescopic tube of the fan is in the fully extended position, perspective view;

figure 2 - fan with figure 1, in which the telescopic tube of the fan is in the fully retracted position, perspective view;

figure 3 - the base of the stand fan with Fig 1, a view in section;

figure 4 - telescopic tube fan with figure 1, the view from the spatially separated parts;

figure 5 - tube 4 in the fully extended position, side view;

figure 6 - tube with figure 5, a view in section along a-a;

7 - tube with figure 5, a view in cross section along B-B;

on Fig - tube 4 in the fully extended position, a perspective view with a cut-out part of the outer cylindrical element;

figure 9 - part pig, magnified view, which removed some of the tube;

figure 10 is a pipe with 4 folded, side view;

figure 11 - tube with figure 10, a view in cross section along C-C;

on Fig - fan nozzle with figure 1, the view from the spatially separated parts;

on Fig - nozzle with Fig, front view;

on Fig - nozzle with Fig, view in cross-section on R-R; and

on Fig - enlarged view of region R, shown in Fig.

Figure 1 and 2 show views in perspective of a variant of implementation of the fan 10. In this embodiment of the invention, the fan 10 is is safe fan and made in the form of domestic outdoor fan contains adjustable height rack 12 and a nozzle 14 mounted on the rack 12 and is designed to release air from the fan 10. Hour 12 contains located on the floor of the base 16 and the adjustable height support, in the form of a telescopic tube 18, which protrudes upward from the base 16 and which is designed to move the primary air flow from the base 16 in the nozzle 14.

The base 16 of the rack 12 includes essentially cylindrical part 20 of the chassis with the engine mounted essentially on the cylindrical lower portion 22 of the housing. Preferably, the portion 20 of the chassis with the engine and the lower part 22 of the case had essentially the same outer diameter so that the outer surface portion 20 of the housing with the engine was essentially aligned with the outer surface of the lower part 22 of the housing. If desired, the lower part 22 of the housing can be installed on the floor of the disc-shaped plate 24 of the base and may contain several user-controlled buttons 26 and user-driven controller 28 that is designed to control the operation of the fan 10. In addition, the base 16 further comprises multiple channels 30 for air intake, which in this embodiment of the invention made in the form of holes which are made in part 20 of the housing with the engine and through the cat is that the primary air flow is sucked into the base 16 from the external environment. In this embodiment of the invention the height of the base 16 of the rack 12 is from 200 to 300 mm, while the diameter of the portion 20 of the housing with the engine is from 100 to 200 mm, it is Preferable that the diameter of the plate 24 of the base ranged from 200 to 300 mm

Telescopic tube 18 hours 12 is arranged to move from the fully extended position shown in figure 1, to the folded position shown in figure 2. The tube 18 includes essentially cylindrical base 32 mounted on the base 12 of the fan 10, the outer cylindrical element 34, which is connected to the base 32 and which runs up from the base 32 and the inner cylindrical element 36, which is partially located in the outer cylindrical element 34. The connecting device 37 connects the nozzle 14 and the open top end of the inner cylindrical element 36 of the tube 18. The inner cylindrical element 36 is arranged to move in the external cylindrical element 34 from the fully extended position shown in figure 1, to the folded position shown in figure 2. When the inner cylindrical element 36 is in the fully extended position, it is preferable that the height of the fan 10 ranged from 1200 to 1600 mm, and when the internal cylindrical element 36 is in closed position, a preference for the equipment, to the height of the fan 10 ranged from 900 to 1300 mm For height adjustment of the fan 10, the user can take an open part of the inner cylindrical element 36 and to move the internal cylindrical element 36 optionally up or down so that the nozzle 14 took to the desired vertical position. When the inner cylindrical element 36 is in closed position, the user can take the connecting device 37 and pulling the inner cylindrical element 36 upward.

The nozzle 14 is annular and surrounds the Central axis X defining the opening 38. The nozzle 14 includes an exhaust section 40, which is located at the rear of the nozzle 14 and is designed to release the primary air flow from the fan 10 through the opening 38. The discharge section 40 is located around the hole 38 and preferably is annular. The inner peripheral part of the nozzle 14 includes a surface 42 Coanda, which is adjacent to the exhaust section 40 and over which the exhaust section 40 sends the output of the fan 10 air extending surface 44 located on the stream after the surface 42 Coanda, and the guide surface 46 located on the stream after extending surface 44. Extending surface 44 is located on the cone from the Central axis X of the hole 38 is thus, to facilitate the flow of air emitted from the fan 10. The angle between the extending surface 44 and the Central axis X of the hole 38, is in the range from 5 to 25, and in this example is approximately 7. Guide surface 46 is at an angle to the extending surface 44, so as to further contribute to the effective delivery of the cooling air flow from the fan 10. Preferably, the guide surface 46 is parallel to the Central axis X of the hole 38 to provide an essentially flat and essentially smooth surface for the air flow emitted from the exhaust section 40. The flow after the guide surface 46 is visually attractive beveled surface 48, which end surface 50 that is located essentially perpendicular to the Central axis X of the hole 38. Preferably, the angle between the beveled surface 48 and the Central axis X of the hole 38 was approximately 45. In this embodiment of the invention the height of the nozzle 14 is from 400 to 600 mm.

Figure 3 shows a view in section of the base 16 of the rack 12. In the lower part 22 of the body is the controller, generally indicated by the reference position 52 and designed to control the operation of the fan 10 in response to a button in the monitor user buttons 26, which are shown in figures 1 and 2, and/or in response to manipulation of a managed user controller 28. The lower part 22 of the housing may also contain a sensor 54 that is designed to receive control signals from a remote control (not shown) and transmit these signals to the controller 52. Preferably, these control signals are infrared signals. The sensor 54 is located behind the window 55, through which control signals are received in the lower portion 22 of the housing base 16. Can also be a led (not shown), indicating that the fan 10 is in the ready mode. The lower part of the housing 22 also includes a mechanism, generally indicated by the reference position 56 and designed for oscillatory movement part 20 of the housing with the motor base 16 relative to the lower part 22 of the housing base 16. The oscillating mechanism 56 includes a rotating shaft 56, which moves from the lower part 22 of the housing and ends in the part 20 of the housing with the engine. The shaft 56 is installed in the sleeve 56b connected to the lower part 22 of the housing through the bearings to the shaft 56 can rotate relative to the sleeve 56b. One end of the shaft 56 is connected with the Central part of the annular connecting plate 56, while the outer part of the connecting plate 56 is connected to the core is the part 20 of the housing with the engine. This allows rotation part 20 of the housing with the engine relative to the lower part 22 of the housing. The oscillating mechanism 56 also includes a motor (not shown), which is located in the lower part 22 of the housing and which drives a crank mechanism, generally indicated by the reference position 56d and performing an oscillatory motion of the base part 20 of the housing with the engine relative to the upper part of the lower part 22 of the housing. Crank mechanisms for the implementation of the oscillatory movement of one node relative to another, is known and therefore will not be described herein. Preferably, the range of the oscillating loop portion 20 of the housing with the engine ranged from 60(up to 120, and in this embodiment of the invention it is equal to about 90. In this embodiment of the invention, the oscillating mechanism 56 can perform approximately 3 to 5 oscillatory cycles per minute. The cable 58 of the power goes through the hole made in the bottom part 22 of the housing, and is intended to supply electric power to the fan 10.

Part 20 of the housing with the motor comprises a cylindrical protective net 60, which made a lot of holes 62 to form a channel 30 for the air intake, located at the base 16 of the rack 12. Part 20 of the housing with the engine vowelcount 64, designed for suction of the primary air flow through the holes 62 in the base 12. Preferably, the impeller 64 took the form of an impeller with an oblique flow. The impeller 64 is connected with a rotating shaft 66 extending from the motor 68. In this embodiment of the invention, the motor 68 is a brushless DC motor, the speed of which is changed by the controller 52 in response to user interaction with the controller 28 and/or in response to a signal received from the remote control. Preferably, the maximum rotation speed of the engine 68 was in the range of from 5,000 to 10,000 rpm./minutes drive Motor 68 is located in the motor housing, which contains the upper portion 70 that is connected with the bottom part 72. The upper portion 70 of the casing of the engine includes a diffuser 74 in the form of a stationary disk with spiral blades. The motor casing is installed in the housing 76 of the impeller, which generally has the shape of a truncated cone and which is connected with a part 20 of the housing with the engine. The shape of the impeller 64 and the housing 76 of the impeller is chosen such that the impeller 64 was close to the inner surface of the casing 76 of the impeller, but have not touched it. Essentially ring-shaped element 78 air inlet is connected with the bottom of the housing 76 of the impeller and is intended for direction perving the air flow in the housing 76 of the impeller.

Preferably, the base 16 of the rack 12 is additionally contained sound-absorbing foam designed to reduce the propagation of noise from the base 16. In this embodiment of the invention, the portion 20 of the housing with the motor base 16 contains the first annular element 80, made of foam and located under the protective grid 60, and the second annular element 82, made of foam material and located between the housing 76 of the impeller and the element 78 for air intake;

Next, with reference to figure 4-11 will be described telescopic tube 18 hours 12. The base 32 of the tube 18 contains essentially cylindrical side wall 102 and the annular upper surface 104, which is essentially perpendicular to the side wall 102 and preferably made in one piece with the side wall 102. Preferably, the outer diameter of the side wall 102 is essentially coincident with the outer diameter portion 20 of the housing with the motor base 16, and the shape of the side wall 102 was such that the external surface of the side wall 102 was essentially lies flush with the outer surface of the part 20 of the housing with the motor base 16 when the tube 18 is connected to the base 16. In addition, the base 32 includes a relatively short air tube 106 extending from the top surface 104 and p is rednaznachenie to move the primary air flow in the external cylindrical element 34 of the tube 18. Preferably, the air nozzle 106 was essentially coaxially with the side wall 102, and its outer diameter was slightly smaller than the inner diameter of the outer cylindrical element 34 of the tube 18, to be able to fully insert the air nozzle 106 in the outer cylindrical element 34 of the tube 18. On the outer surface of the air pipe 106 may be a set of edges 108 along the axis and designed to form fit interference fit with the outer cylindrical element 34 of the tube 18, and thus, for fastening the outer cylindrical element 34 to the base 32. Over the upper end of the air pipe 106 is annular sealing element 110 for forming an airtight seal between the outer cylindrical element 34 and an air outlet 106.

The tube 18 includes a dome-shaped element 114, intended for the direction of primary air flow leaving the diffuser 74, the air pipe 106. Guide the air element 114 has an open bottom end 116 intended for receiving the primary air flow from the base 16 and an open upper end 118 that is designed to move the primary air flow into the air inlet 106. Guide the air element 114 is located inside the base 32 of the tube 18. upravlaushiy air element 114 is connected to the base 32 via a snap connection elements 120, located on the base 32 and the pilot air element 114. The second annular sealing element 121 is located around the open upper end 118 to form an airtight seal between the base 32 and guides the air element 114. As shown in figure 3, the guide of the air element 114 connected to the open upper end portion 20 of the housing with the motor base 16, for example, via a snap connection elements 123 or threaded connecting elements located on the pilot air element 114 and part 20 of the housing with the motor base 16. Thus, the guide of the air element 114 connects the tube 18 with the base 16 of the rack 12.

On the inner surface of the guide air element 114 are many guides air blades 122 to the spiral direction of the air flow leaving the diffuser 74, the air pipe 106. In this example, guide the air element 114 contains seven guiding the air blades 122, which are evenly distributed, the inner surface of the guide air element 114. Guides the air blades 122 converge in the centre of the open upper end 118 guide the air element 114 and, thus, define multiple air channels 124 to guide the air element 114, each the second of which is intended for the direction of the relevant part of the primary air flow into the air inlet 106. As shown in figure 4, seven radial guides the air blades 126 are located in the air inlet 106. Each of these radial guides the air blades 126 is located along essentially the entire length of the air pipe 106 and is connected to a corresponding one of the guide air blades 122, when the guide air element 114 is connected to the base 32. Thus, radial guides the air vane 126 is defined by several located along the axis of the air channels 128 inside the air pipe 106, each of the air channels 128 receives a portion of the primary air flow from the corresponding one of the air channels 124, located inside the guide the air element 114, and moves that portion of the primary air flow axis through an air pipe 106 in the outer cylindrical element 34 of the tube 18. Thus, the base 32 and the guide air element 114 of the tube 18 is used to convert a spiral air flow leaving the diffuser 74, axial air flow, which passes through the outer cylindrical element 34 and the inner cylindrical element 36 in the nozzle 14. For forming an airtight seal between the guides of the air element 114 and the base 32 of the tube 18 may be provided with a third annular sealing element 129.

Cylindrical upper sleeve 130 is connected, for example, by using adhesives or by using fit interference fit with the inner surface of the upper part of the outer cylindrical element 34, so that the upper end 132 of the upper sleeve 130 is flush with the upper end 134 of the outer cylindrical element 34. The inner diameter of the upper sleeve 130 is slightly larger that the outer diameter of the inner cylindrical element 36, to allow the inner cylindrical element 36 to pass through the upper sleeve 130. The third annular sealing element 136 is located on the upper sleeve 130 to form an airtight seal with the inner cylindrical element 36. The third annular sealing element 136 includes an annular flange 138 which communicates with the outer cylindrical element 34 in order to obtain an airtight seal between the upper sleeve 130 and the outer cylindrical element 34.

A cylindrical lower sleeve 140 is connected, for example, by using adhesives or by using fit interference fit with the outer surface of the lower part of the inner cylindrical element 36, so that the lower end 142 of the internal cylindrical element 36 is located between the upper end 144 and the lower end 146 of the lower sleeve 140. The outer diameter of the top is about the end 144 of the lower sleeve 140 is essentially coincides with the external diameter of the lower end 148 of the upper sleeve 130. Thus, in the fully extended position of the inner cylindrical element 36, the upper end 144 of the lower sleeve 140 is adjacent to the lower end 148 of the upper sleeve 130, prevents the extraction of the internal cylindrical element 36 of the outer cylindrical element 34. In the folded position of the internal cylindrical element 36, the lower end 146 of the lower sleeve 140 is adjacent to the upper end of the air pipe 106.

The mainspring 150 is wound on the axis 152 that is rotatably installed between the facing inside the brackets 154 of the lower sleeve 140 of the tube 18, as shown in Fig.7. As shown in Fig, the mainspring 150 is a steel strip, the free end 156 which is fixedly mounted between the outer surface of the upper sleeve 130 and the inner surface of the outer cylindrical element 34. Therefore, the mainspring 150 unwound from the axis 152, when the inner cylindrical element 36 is lowered from the fully extended position shown in figure 5 and 6, to the folded position shown in figure 10 and 11. The energy of elastic strain stored in the mainspring 150, serves as a counterweight required to maintain user-selected provisions of the internal cylindrical element 36 relative to the outer cylindrical element 34.

Additional the Noe resistance to displacement of the internal cylindrical element 36 relative to the outer cylindrical element 34 is provided by spring-loaded arcuate tape 158, preferably made of plastic material and located in the annular groove 160 that is located circumferentially around the lower sleeve 140. As shown in Fig.7 and 9, the tape 158 does not cover the lower sleeve 140 and, therefore, contains two opposite end 161. Each end 161 of the tape 158 contains an inner radius portion 161 a, which is located in the hole 162, made in the bottom of the sleeve 140. The spring 164 is located between the inner radius portions 161 and ends 161 belt 158 to press the outer surface of the belt 158 to the inner surface of the outer cylindrical element 34, thereby increasing the frictional forces that resist movement of the inner cylindrical element 36 relative to the outer cylindrical element 34.

Tape 158 further comprises a recess 166, which in this embodiment of the invention is contrary to the spring 164 and which defines located along the axis of the groove 167 on the outer surface of the belt 158. Groove 167 tape 158 is located over the protruding rib 168, which is located on an axis along the length of the inner surface of the outer cylindrical element 34. The angular width and depth along the radius of the groove 167 essentially the same as the angular width and depth radially protruding ribs 168 that is needed to prevent zamnogo rotation between the inner cylindrical element 36 and the outer cylindrical element 34.

Next, with reference to Fig-15, will be described nozzle 14 of the fan 10. The nozzle 14 includes an annular outer portion 200 of the housing that engages with the annular inner part 202 of the casing and surrounding the inner portion 202 of the housing. Each of these parts can be made of several connected components, but in this embodiment of the invention and the outer portion 200 of the housing and the interior of the housing 202 are one cast product. The inner part of the housing 202 defines a Central hole 38 of the nozzle 14 and contains an outer peripheral surface 203, the form of which determines the surface 42 Coanda extending surface 44, the guide surface 46 and the beveled surface 48.

Along the outer portion 200 of the housing and the inner part 202 of the housing define an annular internal channel 204 of the nozzle 14. Thus, the inner channel 204 is located around the opening 38. The inner channel 204 limited to the inner peripheral surface 206 of the outer part 200 of the casing and the inner peripheral surface 208 of the inner part 202 of the housing. The basis of the external portion 200 of the housing has a hole 210.

The connecting device 37, which connects the nozzle 14 with the open upper end 170 of the internal cylindrical element 36 of the tube 18 contains a tilt mechanism that is designed to tilt the nozzle 14 is otnositelno rack 12. The tilt mechanism includes upper element in the form of plate 300, still located in the hole 210. If desired, the plate 300 can be performed as a unit with the outer part 200 of the housing. The plate 300 has a circular opening 302 through which the primary air flow enters into the inner channel 204 of the telescopic tube 18. The connecting device 37 further comprises a lower element in the form of an air nozzle 304, which is at least partially inserted into the open upper end 170 of the internal cylindrical element 36. The inner diameter of air pipe 304 essentially the same as the inner diameter of the circular hole 302 in the top plate 300 of the connecting device 37. If necessary for forming an airtight seal between the inner surface of the internal cylindrical element 36 and the outer surface of the air outlet 304 may be provided in the annular sealing element, which prevents the extraction of the air nozzle 304 of the inner cylindrical element 36. The plate 300 can be rotated connected with an air pipe 304 with a set of connecting elements, which in General is designated on Fig reference position 306 and which is sealed with a plug 308. Flexible tube 310 is located is between the air inlet 304 and the plate 300 and is designed to move air between the air inlet 304 and the plate 300. Flexible tube 310 may be made in the form of annular corrugated sealing element. The first annular sealing element 312 forms an airtight seal between the tube 310 and the air outlet 304, and the second annular sealing element 314 forms an airtight seal between the tube 310 and the plate 300. For tilting the nozzle 14 relative to the rack 12, the user simply pulls or pushes the nozzle 14 to the tube 310 squirmed and gave an opportunity to the plate 300 to move relative to the air nozzle 304. The effort required to move the nozzle 14, depends on the density of connections between the plate 300 and the air inlet 304 and preferably, the specified force ranged from 2 to 4H. Preferably, the nozzle 14 is made to move in the range of 10 (not tilted position, in which the X axis is essentially horizontal, to a fully tilted position. When the nozzle 14 is tilted relative to the rack 12, the X-axis is rotated essentially in the vertical plane.

The outlet section 40 of the nozzle 14 is located at the rear of the fan 10. The discharge section 40 is formed by overlapping portions 212, 214 of the inner peripheral surface 206 of the outer portion 200 of the housing and the outer peripheral surface 203 of the inner part 202 to the of Cusa respectively. In this example, the discharge section 40 is essentially ring-shaped and, as shown in Fig has an essentially U-shaped cross-section in the section along the line passing through the diameter through the nozzle 14. In this example, the overlapping part 212, 214 of the inner peripheral surface 206 of the outer portion 200 of the housing and the outer peripheral surface 203 of the inner part 202 of the case is made so that the outlet section 40 converges towards the outlet 216, intended for the direction of primary air flow over the top surface 42 Coanda. The outlet opening 216 has the shape of an annular gap, preferably a relatively constant width in the range from 0.5 to 5 mm In this example, the width of the outlet 216 is from 0.5 to 1.5 mm In the exhaust section 40 can be located separators intended for cultivation from each other, the overlapping portions 212, 214 of the inner peripheral surface 206 of the outer portion 200 of the housing and the outer peripheral surface 203 of the inner part 202 of the housing to maintain the width of the outlet openings 216 to the desired level. These separators can be a single integer or an inner peripheral surface 206 of the outer portion 200 of the housing or with the outer peripheral surface 203 of the inner part 202 of the housing.

Order management is of the fan 10 by the user. presses the corresponding one of the buttons 26, located on the base 16 of the rack 12, resulting in the controller 52 starts the motor 68 with the purpose of rotation of the impeller 64. The rotation of the impeller 64 leads to the fact that the primary air flow is sucked into the base 16 of the rack 12 through the holes 62 of the protective grid 60. Depending on the speed of rotation of the motor 68, the flow rate of primary air flow may be from 20 to 40 l/s Primary air stream passes successively through the housing 76 of the impeller and the diffuser 74. The helical shape of the blades of the diffuser 74 leads to the fact that the primary air flow out of the diffuser 74 in the form of a spiral air flow. The primary air flow enters the guide air element 114, where the curved guides the air blades 122 divide the primary air flow into several parts and send each part of the primary air flow into the respective spaced along the axis of the air channel 128 in the air pipe 106 of the base 32 of the telescopic tube 18. Part of the primary air flow merge into directed along the axis of the air flow at the exit from the air outlet 106. The primary air stream passes upward through the outer cylindrical element 34 and the inner cylindrical element 36 of the tube 18 and through the connecting device 37 pop the AET inner channel 204 of the nozzle 14.

In the nozzle 14 of the primary air flow is divided into two air flow, which pass in opposite directions around the Central hole 38 of the nozzle 14. When air flows pass through the inner channel 204, the air flows into the exhaust section 40 of the nozzle 14. Preferably, the air flowed into the exhaust section 40 is essentially uniformly around the hole 38 of the nozzle 14. In the exhaust section 40, the airflow direction is changed by being on the opposite. Air flow compressed by the converging portion of the exhaust section 40 and extends through the opening 216.

The primary air stream coming out of the exhaust section 40, is directed over the top surface 42 of the Coanda nozzle 14, which leads to the creation of secondary air flow through the entrainment of air from the external environment, more specifically from the area around the exhaust opening 216 final section 40 and from the area around the rear part of the nozzle 14. This secondary air flow passes through the Central hole 38 of the nozzle 14 where it is combined with the primary air flow and the result is the total air flow or air stream, being pushed forward from the nozzle 14. Depending on the speed of rotation of the motor 68, the flow rate of the air flow coming forward from the fan 10, up to 400 l/s, preferably up to 600 l/s, and Maxim is supplemented flax speed of the air jet may be from 2.5 to 4 m/s

Uniform distribution of the primary air flow along the outlet section 40 of the nozzle 14 provides uniform airflow over the expanding surface 44. Extending surface 44 causes a reduction in the average speed of the air flow due to the movement of air flow through the managed extensions. The relatively small angle between the extending surface 44 and the Central axis X of the hole 38 allows air flow to expand gradually. Otherwise abrupt or rapid deviation could result in breakage of the air flow in the expansion area would be formed turbulence. Such turbulence can lead to increased turbulence and associated noise in the air stream, which may be undesirable, especially in a household device, such as a fan. Air flow pushed forward for expanding the surface 44 may seek to continue to diverge. The presence of the guide surface 46 located essentially parallel to the Central axis X of the hole 38, further constricts airflow. As a result, air flow can effectively move from the nozzle 14, the air flow can quickly be felt at a distance of several meters from the fan 10.

1. Safe fan containing the nozzle and redtwo create an air flow through the nozzle, moreover, the nozzle has an internal channel, the final section intended for receiving the air flow from the inner channel, and a surface that is adjacent to the exhaust section and over which the outlet section is configured to direct airflow, while the nozzle is mounted on a height-adjustable stand.

2. The fan according to claim 1 in which the means for creating the air flow is in the rack.

3. The fan according to claim 2, in which the hour contains a tube that is designed to move the air flow in the nozzle.

4. The fan according to claim 3, in which the stand includes a base, in which there are means for creating an air stream, while the tube is located between the substrate and the nozzle.

5. The fan according to claim 4 in which the means for creating the air flow contains the impeller, the motor is designed to rotate the impeller, and a diffuser located downstream after the impeller.

6. The fan according to claim 5, containing the means of the direction of air flow exiting the diffuser, the tube.

7. The fan according to claim 6, in which the routing of the air flow means includes multiple blades, each of which is designed to direct the relevant part of the air flow leaving the diffuser in the direction of the tube.

8. The fan according to claim 7, in which the voltage is awsomee airflow tool contains a number of radial blades, located at least partially inside the tube, with each of the radial blades attached to the respective blades from a variety of blades.

9. The fan according to any one of claims 1 to 8, in which the shape of the inner channel provides separation of the air flow into two air flow, each of which has the possibility of leakage along the corresponding side of the hole.

10. The fan according to any one of claims 1 to 8, in which the inner channel is continuous.

11. The fan according to any one of claims 1 to 8, in which the inner channel is essentially annular.

12. The fan according to any one of claims 1 to 8, in which the outlet area surrounds the opening and is preferably concentric relative to the inner channel.

13. The fan according to any one of claims 1 to 8, in which the nozzle has an internal part of the housing and the outside of the housing, which together define an internal channel and an exhaust section.

14. The fan on item 13, in which the outlet section has an outlet located between the outer surface of the inner part of the body and the internal surface of the outer housing of the nozzle.

15. The fan 14, in which the exhaust hole is made in the form of slits at least partially surrounding the hole.

16. The fan 14 in which the width of the outlet part of AET from 0.5 to 5 mm

17. The fan according to any one of claims 1 to 8, in which the surface contains a Coanda surface.

18. The fan 17 in which the Coanda surface surrounding the hole.

19. The fan according to any one of claims 1 to 8, in which the nozzle includes extending surface located on the stream after the final plot.



 

Same patents:

Fan // 2463483

FIELD: ventilation.

SUBSTANCE: fan without blades for creation airflow contains a nozzle 1 mounted on the basis 16, comprising means for creating an air flow - the impeller 30 and diffuser 32, through the nozzle 1. Nozzle 1 has an inner channel 10 for receiving the air flow from the base 16 and an outlet 12 through which the air flow is released. The nozzle 1 is located around the axis and locates the opening 2, through which outside the fan the air is pulled in through airflow discharged from the outlet 12. The nozzle 1 has a surface over which there is a discharge opening 12 for directing the air flow. The surface comprises a diffuser part 46 moving away from the axis, and the guiding part 48, located downstream after the diffuser part 46 at an angle to the latter.

EFFECT: creation of a compact low noise safe device.

28 cl, 5 dwg

FIELD: machine building.

SUBSTANCE: proposed plant comprises housing accommodating motor stator with multiphase winding, compressor compression radial-flow stage flow section fixed elements, housing cover accommodating stator elements of plant rotor magnetic suspension system bearings, and plant rotor carrying rotor elements of bearings and compressor and motor rotary assemblies. Note here that motor stator magnetic core is made up of sections, their number complying with that of compression stages. Magnetically and electrically not conducting separation cylinders are arranged between said sections. Note here that stator winding is shared by all sections and laid in core section and separation cylinder grooves. Every integrated rotary assembly of compressor and motor comprises impeller. Said impeller inlet has guide channels to feed gas to impeller inlet while motor rotor section is located there outside. Note also that magnetic coupling between motor and rotor sections is ensured by fixed cylinders made from electrically nonconducting materials with built-in cores made up of thin stacks of radial plates of electric steel.

EFFECT: decreased overall dimensions.

2 cl, 2 dwg

Blower assembly // 2460904

FIELD: engines and pumps.

SUBSTANCE: blower assembly 10 is designed to create air jet. Blower comprises outlet 14 arranged on bed. Said bed comprises outer housing 16 and case 64 of impeller 52 arranged in outer housing 16. Case 64 has air inlet 70 and air outlet and houses impeller 53 and its drive motor 56 to force airflow through case 64. Aforesaid outlet has inner chamber 86 to direct airflow from impeller case 64 and constricted section 26 for airflow to be forced out from blower 10. Flexible sealing element is arranged between outer housing 16 and case 64 of impeller 52.

EFFECT: reduced air loss and noise, increased airflow.

19 cl, 17 dwg

Fan // 2458255

FIELD: ventilation.

SUBSTANCE: vaneless fan includes nozzle 1 and device for creation of flow through it. Nozzle 1 has internal channel 10, outlet hole 12 for receiving the air flow from internal channel 10 and Koand surface 14 adjacent to outlet hole 12. The latter is located so that the air flow can be directed along that surface. Device for creation of the air flow through nozzle 1 is made in the form of impeller 30 brought into action with electric motor 22.

EFFECT: creation of more uniform air flow along the whole working surface of fan; more compact and safe design.

18 cl, 5 dwg

Fan // 2458254

FIELD: ventilation.

SUBSTANCE: vaneless fan 100 for creation of the air flow includes nozzle 1 installed on the housing of base 16 for creation of the air flow passing through it. Nozzle 1 has internal channel 10 for receiving the air from base 16 and outlet hole 12 through which the air flow is discharged. Nozzle 1 is essentially located orthogonally to the axis and forms hole 2 through which the air is injected from outer side of fan 100 due to the air flow leaving the outlet hole 12. Both nozzle 1 and base 16 have the depth in the direction of axis; at that, depth of base 16 does not exceed double depth of nozzle 1. As an alternative, fan 100 has the height measured from the end of base 16, which is the most distant from nozzle 1, to the end of nozzle 1, which is the most distant from base 16, and width which is perpendicular to the height. At that, both the height and the width are perpendicular to the axis, and width of base 16 does not exceed 75% of nozzle 1 width.

EFFECT: fan has compact design.

25 cl, 5 dwg

Compression unit // 2455530

FIELD: machine building.

SUBSTANCE: compressor unit (1) comprises a compressor (5), a suction line (2) and a return line (3), a block (20) that controls the compressor (5). Moreover, in line (2) the suction is ensured by at least one device (21, 22) to detect amounts of non-gaseous fluid medium in the fluid to be compressed, on their way to the entrance to compressor (5), and detection device (21, 22) is connected to management block (20) ensuring signal transmission, and compressor unit (1) contains dissolution unit (30), which dissolves the amount of non-gas on its way to the entrance of compressor (5), while the dissolution is initiated when the amount of detected non-gaseous fluid exceeds a certain limit.

EFFECT: any damage caused by a number of non-gaseous fluid into the suction inlet to the compressor is excluded.

7 cl, 1 dwg

FIELD: electric engineering.

SUBSTANCE: invention relates to electric engineering, namely - to electric machines, and deals with the specific features of fixing elements design for electric motors, particularly, fan sets intended for heating, ventilation and/or air-conditioning plants. This invention proposes a device (40) for fixing electric motor (16) containing accommodating seat (41) for motor installation with a wall (42). According to the invention, the device (40) for fixing electric motor (16) implemented so that the first (18A) and second (18B) air pumping element can be rotated. The air pumping element includes accommodating seat (41) to install electric motor (16) and a wall (42). Besides, the obstructing elements (60, 62; 72, 74, 76; 80) are placed between the electric motor (16) and accommodating seat (41) wall (42). The obstructing elements are implemented so that they can obstruct air flowing between electric motor (16) and wall (42) of accommodating seat and air flow be redirected through electric motor (16).

EFFECT: improved cooling of electric motor and ensured control of different heating, ventilation and/or air conditioning equipment parameters.

21 cl, 9 dwg

Fan unit // 2355916

FIELD: ventilation.

SUBSTANCE: invention relates to fan engineering and can be used as a component of space technology temperature control systems. The technical result is achieved by a fan unit comprising a casing including a cylindrical boring and two flanges with axial holes, two bushes are coaxial to the casing and connected to it by piers; an electric motor is set in each bush and its shaft is equipped by an impeller set inside the cylindrical boring. The casing consists of two parts; the first flange is fitted at the end face of the first casing part and the second one - of the second casing part. A bush with piers is placed in each casing part; the first flange is fitted with threaded holes; the flanges are contacting with each other and interconnected by screws screwed into the threaded holes and passing through the axial holes of the second flange with the screw heads being placed on the second flange side; the outer surface of the first casing part is cylindrical along the section from its free end face to the first flange and the first flange axial holes are projecting beyond the second flange outline.

EFFECT: ensuring repairability and increasing variety of the fan unit assembly patterns.

1 dwg

FIELD: non-positive-displacement pumps.

SUBSTANCE: centrifugal compressing device comprises engine (50) that set rotor (52) in rotation and at least one compressor that has housing of the stator and a set of wheels provided with blades (56) mounted on the driven shaft that is set in rotation inside the housing of the stator. The motor is mounted in pressure-tight crank case (86). The compressing device additionally has a set of active guiding axial and radial bearings (60), (62), (64), (66), and (67) of the rotor and driven shaft and means for cooling engine and guiding bearings by means of sucking gas supplied by the compressor at the outlet of the first compression stage. The cooling means have a set of inner pipelines (80-1), (80-2), (80-3), (80-4), (80-5) and (80-6) that supply cooling gas to the engine and bearings. The flow rate of the cooling gas supplied to the engine differs from that of the cooling gas supplied to the bearings and flow together upstream of the first compression stage .

EFFECT: enhanced reliability.

FIELD: in-flow ventilating systems.

SUBSTANCE: ventilating system includes ventilating unit 1, radiator unit 2, filtering unit 3 and distributing unit 4. Unit 1 includes main and reserve radial fans 6, 7 having inlet manifolds 8, impellers 9 with main and covering discs 11, 12, radial blades 10 and converging gap between manifold 8 and disc 12. Fans 6, 7 are separated by partition 17 in housing 16 for forming vortex cavities between manifold 8 and disc 12 and ducts 19. Vortex suppressing plates are mounted in said cavities. Surface area of cross sections of ducts 19. Surface area and diameter of impeller 9, distance between one wall 18 and blades 10 are mutually related by predetermined relations. When flow is directed to duct 19 of fans 6 or 7 by means of flaps 25 arranged in unit 4 or valves, it is possibly to perform maintenance of system without interrupting its operation.

EFFECT: reduced size, improved comfort of maintenance of system.

17 cl, 13 dwg

FIELD: natural gas transportation mains.

SUBSTANCE: invention relates to gas-transfer energy complexes used for increasing pressure of natural gas transported along gas mains. Novelty in proposed self-contained gas-transfer energy complex of gas mains including at least one compressor station with at least one centrifugal gas charger driven by electric motor is that proposed complex contains power plant consisting of at least power turbine unit including turbine and multiple turbogenerator (with two or more pairs of poles) with common shaftline installed on magnetic supports. Leads of turbogenerator stator winding are electrically connected directly with ins of electric motor stator winding, and electric motor with gas charger have common shaftline installed on magnetic supports. Rated speed of shaftline is set equal to rated speed of gas charger, and rated output voltage frequency of turbogenerator ftg is equal to nch · pm/60 where nch is speed of shaftline of electric motor and charger, pm is number of pairs of electric motor poles, and number of pairs of poles ptg of turbogenerator is 60, ftg/ntg where ntg is speed of shaftline of turbine and turbogenerator. Proposed invention provides self-contained operation of complex with remote control. Groups of turbine-generator and charger and drive are simplified in design, power loses for production and transmission of energy and electric drive are brought to minimum.

EFFECT: increased efficiency as compared with known systems.

7 cl

FIELD: in-flow ventilating systems.

SUBSTANCE: ventilating system includes ventilating unit 1, radiator unit 2, filtering unit 3 and distributing unit 4. Unit 1 includes main and reserve radial fans 6, 7 having inlet manifolds 8, impellers 9 with main and covering discs 11, 12, radial blades 10 and converging gap between manifold 8 and disc 12. Fans 6, 7 are separated by partition 17 in housing 16 for forming vortex cavities between manifold 8 and disc 12 and ducts 19. Vortex suppressing plates are mounted in said cavities. Surface area of cross sections of ducts 19. Surface area and diameter of impeller 9, distance between one wall 18 and blades 10 are mutually related by predetermined relations. When flow is directed to duct 19 of fans 6 or 7 by means of flaps 25 arranged in unit 4 or valves, it is possibly to perform maintenance of system without interrupting its operation.

EFFECT: reduced size, improved comfort of maintenance of system.

17 cl, 13 dwg

FIELD: non-positive-displacement pumps.

SUBSTANCE: centrifugal compressing device comprises engine (50) that set rotor (52) in rotation and at least one compressor that has housing of the stator and a set of wheels provided with blades (56) mounted on the driven shaft that is set in rotation inside the housing of the stator. The motor is mounted in pressure-tight crank case (86). The compressing device additionally has a set of active guiding axial and radial bearings (60), (62), (64), (66), and (67) of the rotor and driven shaft and means for cooling engine and guiding bearings by means of sucking gas supplied by the compressor at the outlet of the first compression stage. The cooling means have a set of inner pipelines (80-1), (80-2), (80-3), (80-4), (80-5) and (80-6) that supply cooling gas to the engine and bearings. The flow rate of the cooling gas supplied to the engine differs from that of the cooling gas supplied to the bearings and flow together upstream of the first compression stage .

EFFECT: enhanced reliability.

Fan unit // 2355916

FIELD: ventilation.

SUBSTANCE: invention relates to fan engineering and can be used as a component of space technology temperature control systems. The technical result is achieved by a fan unit comprising a casing including a cylindrical boring and two flanges with axial holes, two bushes are coaxial to the casing and connected to it by piers; an electric motor is set in each bush and its shaft is equipped by an impeller set inside the cylindrical boring. The casing consists of two parts; the first flange is fitted at the end face of the first casing part and the second one - of the second casing part. A bush with piers is placed in each casing part; the first flange is fitted with threaded holes; the flanges are contacting with each other and interconnected by screws screwed into the threaded holes and passing through the axial holes of the second flange with the screw heads being placed on the second flange side; the outer surface of the first casing part is cylindrical along the section from its free end face to the first flange and the first flange axial holes are projecting beyond the second flange outline.

EFFECT: ensuring repairability and increasing variety of the fan unit assembly patterns.

1 dwg

FIELD: electric engineering.

SUBSTANCE: invention relates to electric engineering, namely - to electric machines, and deals with the specific features of fixing elements design for electric motors, particularly, fan sets intended for heating, ventilation and/or air-conditioning plants. This invention proposes a device (40) for fixing electric motor (16) containing accommodating seat (41) for motor installation with a wall (42). According to the invention, the device (40) for fixing electric motor (16) implemented so that the first (18A) and second (18B) air pumping element can be rotated. The air pumping element includes accommodating seat (41) to install electric motor (16) and a wall (42). Besides, the obstructing elements (60, 62; 72, 74, 76; 80) are placed between the electric motor (16) and accommodating seat (41) wall (42). The obstructing elements are implemented so that they can obstruct air flowing between electric motor (16) and wall (42) of accommodating seat and air flow be redirected through electric motor (16).

EFFECT: improved cooling of electric motor and ensured control of different heating, ventilation and/or air conditioning equipment parameters.

21 cl, 9 dwg

Compression unit // 2455530

FIELD: machine building.

SUBSTANCE: compressor unit (1) comprises a compressor (5), a suction line (2) and a return line (3), a block (20) that controls the compressor (5). Moreover, in line (2) the suction is ensured by at least one device (21, 22) to detect amounts of non-gaseous fluid medium in the fluid to be compressed, on their way to the entrance to compressor (5), and detection device (21, 22) is connected to management block (20) ensuring signal transmission, and compressor unit (1) contains dissolution unit (30), which dissolves the amount of non-gas on its way to the entrance of compressor (5), while the dissolution is initiated when the amount of detected non-gaseous fluid exceeds a certain limit.

EFFECT: any damage caused by a number of non-gaseous fluid into the suction inlet to the compressor is excluded.

7 cl, 1 dwg

Fan // 2458254

FIELD: ventilation.

SUBSTANCE: vaneless fan 100 for creation of the air flow includes nozzle 1 installed on the housing of base 16 for creation of the air flow passing through it. Nozzle 1 has internal channel 10 for receiving the air from base 16 and outlet hole 12 through which the air flow is discharged. Nozzle 1 is essentially located orthogonally to the axis and forms hole 2 through which the air is injected from outer side of fan 100 due to the air flow leaving the outlet hole 12. Both nozzle 1 and base 16 have the depth in the direction of axis; at that, depth of base 16 does not exceed double depth of nozzle 1. As an alternative, fan 100 has the height measured from the end of base 16, which is the most distant from nozzle 1, to the end of nozzle 1, which is the most distant from base 16, and width which is perpendicular to the height. At that, both the height and the width are perpendicular to the axis, and width of base 16 does not exceed 75% of nozzle 1 width.

EFFECT: fan has compact design.

25 cl, 5 dwg

Fan // 2458255

FIELD: ventilation.

SUBSTANCE: vaneless fan includes nozzle 1 and device for creation of flow through it. Nozzle 1 has internal channel 10, outlet hole 12 for receiving the air flow from internal channel 10 and Koand surface 14 adjacent to outlet hole 12. The latter is located so that the air flow can be directed along that surface. Device for creation of the air flow through nozzle 1 is made in the form of impeller 30 brought into action with electric motor 22.

EFFECT: creation of more uniform air flow along the whole working surface of fan; more compact and safe design.

18 cl, 5 dwg

Blower assembly // 2460904

FIELD: engines and pumps.

SUBSTANCE: blower assembly 10 is designed to create air jet. Blower comprises outlet 14 arranged on bed. Said bed comprises outer housing 16 and case 64 of impeller 52 arranged in outer housing 16. Case 64 has air inlet 70 and air outlet and houses impeller 53 and its drive motor 56 to force airflow through case 64. Aforesaid outlet has inner chamber 86 to direct airflow from impeller case 64 and constricted section 26 for airflow to be forced out from blower 10. Flexible sealing element is arranged between outer housing 16 and case 64 of impeller 52.

EFFECT: reduced air loss and noise, increased airflow.

19 cl, 17 dwg

FIELD: machine building.

SUBSTANCE: proposed plant comprises housing accommodating motor stator with multiphase winding, compressor compression radial-flow stage flow section fixed elements, housing cover accommodating stator elements of plant rotor magnetic suspension system bearings, and plant rotor carrying rotor elements of bearings and compressor and motor rotary assemblies. Note here that motor stator magnetic core is made up of sections, their number complying with that of compression stages. Magnetically and electrically not conducting separation cylinders are arranged between said sections. Note here that stator winding is shared by all sections and laid in core section and separation cylinder grooves. Every integrated rotary assembly of compressor and motor comprises impeller. Said impeller inlet has guide channels to feed gas to impeller inlet while motor rotor section is located there outside. Note also that magnetic coupling between motor and rotor sections is ensured by fixed cylinders made from electrically nonconducting materials with built-in cores made up of thin stacks of radial plates of electric steel.

EFFECT: decreased overall dimensions.

2 cl, 2 dwg

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