Blower assembly

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

 

The invention relates to a fan Assembly. In particular, the present invention relates to a household fan, such as a table fan is designed 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 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. Fans of other types can be attached to the floor or wall. Such fans, as fans, are described in the documents USD 103476 and US 1767060 can be located on the desktop or written the hinnon the table.

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 addition, fans of this type can be noisy and the created noise can become annoying after long use in the domestic environment. Another disadvantage is that the cooling effect created by the fan, is attenuated with increasing distance from the user. This means that the fan should be located close to the user, so that he felt the cooling effect of the fan.

To rotate the exhaust fan can be used oscillatory mechanism, so that the air flow was directed in a wide area of the room. Thus, the direction of air flow created by the fan can be changed. In addition, the device of the actuator can rotate the set of blades with different the speeds to optimize air flow, coming out of the fan. Adjusting the speed of rotation of the blades and oscillating mechanism can improve the quality and uniformity of the air flow to the user, however, the air flow is "intermittent".

Some fans, sometimes referred to as devices air circulation, create a cooling air flow without the use of rotating blades. Such fans, as fans, are described in documents US 2488467 and JP 56-167897 contain large part, forming the basis and includes the engine and the impeller, which are designed to create an air flow in the base. The air flow is directed through the channel from the base to the slits of the vent where the air flow is directed towards the user. The fan described in the document US 2488467, directs the air flow from a set of concentric slits, and the fan described in the document JP 56-167897, directs the air flow to narrow, leading to a single slit for air release.

The fan that tries to create a cooling air flow through the gap without the use of rotating blades, requires efficient transfer of air flow from the base to crack. The air flow is compressed when it enters the gap and this compression creates pressure in the fan, which must in order to overcome the air flow, created by the engine and propeller, you need to eject the air flow through the gap. Any deficiencies in the effectiveness of the system, such as losses through the casing, will be to reduce air flow from the fan. The requirement of high efficiency limits the options of using motors and other devices designed to create an air flow. Fans of this type can be noisy, since the vibration generated by the motor and the impeller, with a high probability are transmitted and amplified.

In the present invention proposed a fan Assembly for creating an air stream, the fan Assembly includes a release mounted on the base, which contains the outer casing, the casing impeller located in an external enclosure, in this case the impeller contains a hole for air intake and a hole for air release, the impeller located in the body of the impeller and the motor, is designed to actuate the impeller to create an air stream through the housing of the impeller, this release contains an internal cavity designed to direct airflow from the outlet openings of the air corps of the impeller, and narrowing, through which the airflow out of the fan Assembly, in this case between external the housing and the housing of the impeller is flexible sealing element.

A flexible sealing element prevents the reverse flow of air in the intake air along the path between the exterior housing and the housing of the impeller, while the compressed air stream created by the impeller, push through the casing impeller in the release. This fan Assembly can be maintained essentially constant pressure difference between the motor and the impeller at the base, including the hole for the exhaust housing of the impeller and the intake air and the body of the impeller. Without a flexible sealing element, the efficiency of the fan Assembly would be less and for variable losses in the base. It is advisable that the flexible sealing element extinguished some of the vibrations and noise from the engine, which otherwise would be transmitted and amplified in the fan Assembly out of the tight sealing of the element.

Preferably, the flexible sealing element was connected to the housing of the impeller in order to facilitate Assembly and improve the seal between the sealing element and the housing of the impeller. More preferably, the flexible sealing element is pressed in an external enclosure, and was provided with an air-tight seal between the outer housing and the housing of the impeller. In a preferred embodiment of the invention the flexible part platnium the element, remote from the body of the impeller, drive in an external enclosure to form a lip seal. The seal can prevent the mixing of the air flow of high pressure created by the impeller, the air which is at atmospheric pressure or at a pressure close to atmospheric.

Preferably, the base was essentially cylindrical. This arrangement can be compact, with base dimensions are small compared to the size of the issue and compared with the dimensions of the whole fan Assembly. It is advisable that the invention was offered a fan Assembly that provides a suitable cooling effect and the footprint would be smaller than the area of the base of the fan, the appropriate level of technology.

In a preferred variant of the invention, the flexible sealing element has an annular sealing element surrounding the body of the impeller. Preferably, the flexible sealing element contained guide part intended for the direction of the cable to the engine. It is advisable to enable the guide part in the sealing element, preferably in the form of a flexible tube, enabling cables, such as power cable to pass through the flexible sealing element while maintaining the division of areas with atmospheric pressure and areas with a high pressure air stream of the fan Assembly. This arrangement can reduce the formation of noise in the fan and the engine.

It is preferable that was provided in a diffuser located in the housing of the impeller and located downstream from the impeller. Preferably, the impeller has been 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 a 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. In a preferred embodiment of the invention, the power cable is connected to the engine through the diffuser. Preferably, the diffuser contained numerous ribs and the power cable is passed through one of these edges. It is useful that this arrangement may allow you to embed the power cable into the components of the base, reducing the total number of parts and the number is komponentov and connections, needed basis. The passage of power cable, preferably of a flat cable through one of the edges of the cone is a neat, compact solution to attach the motor to the power source.

Preferably, the base of the fan Assembly contained a means of directing part of the air flow from the outlet openings of the air corps of the impeller to the inner cavity of release.

Preferably, the direction in which the air is thrown out from the outlet openings of the air corps of the impeller, was essentially perpendicular to the direction in which the air flow passes at least through a portion of the internal cavity. Preferably, the inner cavity was annular and preferably, to form the internal cavity was such as to divide the air flow into two air flow flowing in opposite directions around the hole. In a preferred embodiment of the invention the air flow passes at least part of the internal cavity in the lateral direction and the air out of the outlet openings of the air corps of the impeller in the forward direction. With this in mind, it is preferable that a means of directing part of the air flow from the outlet openings of the air corps of the impeller contained, at least, one is the curved blade. Preferably, to form a single curved blades or each curved blade was such as to change the direction of air flow approximately 90. The curved shape of the blades is such that no significant loss in speed of the air flow in their direction into the internal cavity.

Preferably, the fan Assembly was a safe fan Assembly. Thanks to the safe use of the fan Assembly, the air jet can be created without using a blade fan. Without using blade fan with the aim of pushing air flow from the fan Assembly can be created relatively uniform air stream, and this air stream can be directed into the room or to the user. The air jet can effectively move from hole to release air with low energy loss and velocity to the turbulence.

The term "safe" is used to describe the fan Assembly, in which the air flow is emitted or ejected forward from the fan without the use of moving blades. Therefore, safe fan Assembly can be regarded as a fan, containing the output area or the area of emission, in which no moving blade and from which air is tion flow is sent to the user or in the bathroom. In the output area safe fan Assembly can enter the primary air flow, created by one of many different sources, such as pumps, generators, motors or other devices transferring fluids 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 the fan Assembly and then move back into the space of the room through the outlet.

Therefore, it is not intended that the description of the fan Assembly 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 of the fan Assembly.

Preferably, the base contained a management tool to control the fan Assembly. For safety reasons and for ease of use it is advisable to position the controls on the distance from release to release, so such as, for example, wobble, tilt, run or perform speed setting cannot be made tulate in fan operation.

Preferably, the release was located around the axis with the aim of defining apertures through which air from outside the fan Assembly is drawn by the air flow emitted from narrowing. Preferably, the issue surrounded the hole. The issue may be a ring-shaped release, the height of which is preferably in the range from 200 to 600 mm, more preferably in the range from 250 to 500 mm, Preferably, the base contains at least one hole for air intake through which air is drawn into the fan Assembly with the impeller. Preferably, the specified at least one hole for air intake was located essentially perpendicular to the specified axis. This can provide a short, compact path for air flow, which minimizes noise and friction losses.

Preferably, the narrowing of the issue surrounded the hole and preferably mentioned narrowing was annular. Preferably, the issue surrounded the hole at a distance in the range from 50 to 250 mm, it is Preferable that the release contained at least one wall that defines an internal cavity and narrowing, and the specified at least one wall includes spaced opposite each other surface, determine alaysia narrowing. Preferably, the narrowing of the contained discharge outlet and the distance between opposite surfaces of the outlet was in the range of from 0.5 to 5 mm, more preferably ranging from 0.5 to 1.5 mm, it is Preferable that the release contained inside and the outside of the housing that define a narrowing of the issue. 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 constriction between the overlapping parts of the outer surface of the inner part of the housing and the inner surface of the outer housing issue. The release can contain multiple separators, designed for the separation of the overlapping portions of the inside of the housing and the outer housing issue. This can help maintain essentially uniform width of discharge hole around the hole. Preferably, the separators were located on the same be the deposits along the outlet.

Maximum air flow to air flow created by the fan Assembly preferably is in the range from 300 to 800 liters per second, more preferably in the range from 500 to 800 liters per second.

The issue may contain a Coanda surface located near the constriction and above which there is a narrowing of the intended direction of air flow, throw it out. It is preferable to form the outer surface of the inner part of the housing issue was that, in order to determine the Coanda surface. Preferably, the surface of the Coanda was located around the hole. 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. The 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 a stream of fluid flowing over the surface of the Coanda can be found in articles such as article Reba, the magazine Scientific American, t, June 1966, p.84-92. Through the use of the Coanda surface, the air emitted is from narrowing, suck through the hole more air outside the fan Assembly.

Preferably, the air flow was in the issue of the fan Assembly from the base. In the following description, this air flow will be called the primary air flow. The primary air flow emitted from the narrowing of the issue and preferably runs along the Coanda surface. The primary air stream entrains the air surrounding the narrowing of the issue, which acts as an air amplifier, 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 narrowing of the issue, and, by moving from other areas around the fan Assembly and passes mostly through the opening defined by the release. The primary air stream directed over the Coanda surface and combined with the entrained secondary air flow, total air flow, ejected or pushed forward out of the hole defined by the release. Preferably, the entrainment of air surrounding the narrowing of the issue was such that the primary air flow is increased, hence, is her least five times, more preferably at least ten times while maintaining the overall uniformity of the output.

Preferably, the release contained an expanding surface located downstream relative to the Coanda surface. It is preferable to form the outer surface of the inner part of the housing issue was such as to define an expanding surface.

Next will be described one way of carrying out the invention with reference to the accompanying drawings, on which:

figure 1 - front view of the fan Assembly;

figure 2(a) is a view in isometric of the base of the fan Assembly of figure 1;

figure 2(b) is a view in isometric of the issue of the fan Assembly of figure 1;

figure 3 is a view in section of the fan Assembly of figure 1;

4 is a magnified view of part of figure 3.

figure 5(a) is a side view of the fan Assembly with figure 1, in which the fan Assembly shown in naklonena position;

figure 5(b) is a side view of the fan Assembly with figure 1, in which the fan Assembly shown in the first tilted position;

figure 5(C) is a side view of the fan Assembly with figure 1, in which the fan Assembly shown in the second tilted position;

6 is a top view in isometric of the top element of the base of the fan Assembly of figure 1;

7 is a rear view in isometric of the main part of the fan Assembly of figure 1;

Fig - view from prostranstvennym separation of parts of the main part with Fig.7;

Fig.9(a) is a view showing the location of the two sections of the base, when the fan Assembly is naklonena position;

Fig.9(b) - section a-a figure 9(a);

Fig.9(C) - section b In Fig.9(a);

figure 10(a) is a view showing the location of the other two sections of the base, when the fan Assembly is naklonena position;

figure 10(b) - section C-C figure 10(a); and

figure 10(C) - section D-D figure 10(a).

Figure 1 shows the front view of the fan Assembly 10. Preferably, the fan Assembly 10 was a safe fan Assembly containing the base 12 and issue 14 mounted on the base 12 and supported them. As shown in figure 2(a), the base 12 includes, essentially, a cylindrical outer casing 16 containing many channels 18 for air intake, made in the form of holes, which are located on the outer body 16 and through which the primary air flow is sucked into the base 12 from the external environment. In addition, the base 12 contains several buttons 20, which is controlled by the user, and the controller 22, which is controlled by the user and which is designed to control the operation of the fan Assembly 10. In this example, the height of the base 12 is in the range from 200 to 300 mm and the outer diameter of the outer housing 16 is in the range from 100 to 200 mm

As shown in figure 2(b), issue 1 has an annular shape and a Central opening 24. The height issue 14 is in the range from 200 to 400 mm, Issue 14 contains a constriction 26 located at the rear of the fan 10 and is designed to release air from the fan 10 through the opening 24. The constriction 26 at least partially positioned around the opening 24. The inner boundary of issue 14 includes a surface 28 Coanda located near the constriction 26 and over which the constriction 26 directs the air emitted from the fan 10, the expanding surface 30 located downstream relative to the surface 28 Coanda, and the guide surface 32 that is located downstream relative to the expanding surface 30. The expanding surface 30 is located on the cone from the Central axis X of the hole 24 in such a way as to facilitate the flow of air emitted from the fan 10. The angle between the extending surface 30 and the Central axis X of the hole 24, is in the range from 5 to 25, and in this example is approximately 15. The guide surface 32 is at an angle to the extending surface 30, to further promote the effective delivery of the cooling air flow from the fan 10. Preferably, the guide surface 32 is parallel to the Central axis X of the hole 24 to provide an essentially flat and essentially is a smooth surface for the air flow, thrown out of the constriction 26. Decorative beveled surface 34 is located downstream from the guide surface 32 and the end surface 36 that is located essentially perpendicular to the Central axis X of the hole 24. Preferably, the angle between the beveled surface 34 and the Central axis X of the hole 24 was approximately 45. The total depth of the issue 24 in the direction along the Central axis X of the hole 24 is in the range from 100 to 150 mm and in this example is approximately 110 mm

Figure 3 shows a view in section of the fan 10. The base 12 includes a bottom element 38 of the base, the intermediate element 40 base mounted on the lower element 38 of the base, and the upper element 42 of the base, mounted on the intermediate element 40 of the base. The lower element 38 base contains essentially flat bottom surface 43. In the intermediate element 40 of the base is a controller 44 that is designed to control the operation of the fan 10 by using the buttons 20, which is controlled by the user and which are shown in figures 1 and 2, and/or from the controller 22, which is controlled by the user. The intermediate element 40 bases may also contain oscillatory mechanism 46, which is designed to handle the oscillatory movement of the intermediate element 40 of the base and the top element 42 of the first relative to the lower member 38 of the base. Preferably, the range of the oscillatory cycle of the upper element 42 of the base ranged from 60 to 120, and in this example it is equal to approximately 90. In this example, the oscillating mechanism 46 is made to run about 3-5 oscillatory cycles per minute. The cable 48 AC power goes through the hole made in the bottom element 38 of the base, and is designed to supply electric power to the fan 10.

The top element 42 of the base 12 has an open upper end. The top element 42 of the base comprises a cylindrical protective grid 50, which made a lot of holes. Bores are located in the region of the side wall, called "intervals". Openings ensure the availability of channels 18 air inlet of the base 12. The open square represents the percentage of the total surface area of the cylindrical base, equivalent to the total surface area of the holes. In the shown embodiment, the open area is 33% of the total area of the grid, the diameter of each hole is 1.2 mm and the distance from the center of one hole to the center of an adjacent hole is 1.8 mm, with between holes is 0.6 mm gap. Open area with holes needed to ensure that the air flow was supplied to the fan, but large holes in order to transmit vibration and noise from the engine into the environment. Open area is from 30 to 45%, represents a compromise between the size of the intervals that are designed to limit the propagation of noise, and the holes intended for the free unhindered access of air to the fan.

The top element 42 of the base contains the impeller 52, is used to suction the primary air flow through the openings of the protective screen 50 in the base 12. Preferably, the impeller 52 took the form of an impeller with an oblique flow. The impeller 52 is connected with a rotating shaft 54 extending from the motor 56. In this example, the motor 56 is a brushless DC motor, the speed of which is changed by the controller 44 via the controller 22. Preferably, the maximum speed of rotation of the motor 56 is in the range of from 5,000 to 10,000 rpm. The motor 56 is located in the motor housing, which contains the upper portion 58 connected to the lower part 60. The motor housing is held in the upper element 42 of the base with fasteners 63 engine casing. The upper end of the upper element 42 of the base has a cylindrical outer surface 65. The mounting fixture 63 engine casing is connected with the open upper end of the upper element 42 of the base, for example, with SIP is by a snap connection. The engine 56 and the housing is rigidly connected with the mounting fixture 63 engine casing, allowing some movement of the motor 56 in the upper element 42 of the base.

The mounting fixture 63 engine casing includes curved blade portion 65A and 65b extending inward from the upper end fasteners 63 engine casing. Each curved blade 65A, 65b overlaps the upper part 58 of the engine casing. Thus, the mounting fixture 63 engine casing and curved blades 65A and 65b are made so as to fix and hold the motor housing during movement. In particular, the mounting fixture 63 engine casing prevents the displacement of the engine casing and fall towards the release of 14 while turning the fan 10.

Or the upper part 58, or the lower part 60 of the engine casing contains a diffuser 62 in the form of a stationary disk with spiral ribs a, which is located downstream from the impeller 52. One of the spiral ribs a has an inverted U-shaped cross-section in the cross section along the line vertically passing through the upper element 42 of the base. The shape of this spiral ribs a is to allow the power cable to pass through the edge e.

The motor housing is located in the housing 64 of the impeller and attached. The building is 64 of the impeller, in turn, attached to the many placed at a certain angular distance from each other of the supports 66, in this example, the three supports located in the upper element 42 of the base 12. In the housing 64 of the impeller is located a casing 68 which generally have the shape of a truncated cone. The shape of the casing 68 is selected such that the outer edge of the impeller 52 were closely spaced to the inner surface of the casing 68, but have not touched it. Essentially ring-shaped element 70 air inlet is connected with the bottom of the housing 64 of the impeller and is intended for the direction of primary air flow into the housing 64 of the impeller. The top of the body 64 of the impeller contains essentially ring-shaped opening 71 for air release, intended for the direction of the air flow emitted from the housing 64 of the impeller. Preferably, the base 12 additionally contain sound-absorbing foam designed to reduce the propagation of noise from the base 12. In this example, the upper element 42 of the base 12 includes a made of foam disc-shaped element 72 is directed to the base of the upper element 42 of the base, and essentially ring-shaped, made of foam element 74 that is located in the casing of the engine.

To the housing 64 of the impeller is attached a flexible sealing element. A flexible sealing element to prevent the t reverse the air flow in the element 70 air inlet along a path between the outer housing 16 and the housing 64 of the impeller, that is done by dividing the primary air flow, venutolo from the external environment, from the air stream ejected from the openings 71 to exhaust the impeller 52 and the diffuser 62. Preferably, the sealing element contained lip seal 76. The sealing element on the form is annular, surrounds the casing 64 of the impeller and is located between the housing 64 of the impeller and an outer housing 16. In the shown embodiment of the invention the diameter of the sealing element is larger than the radius distance from the housing 64 of the impeller to the outer housing 16. Thus, the outer part 77 of the sealing element is pressed against the outer casing 16 and is located along the inner surface of the outer case 16, forming a cuff. Lip seal 76 corresponding to the preferred variant of the invention, a conical tapering towards the tip 78 when removed from the housing 64 of the impeller towards the outer casing 16. Preferably, lip seal 76 was made of rubber.

In addition, the lip seal 76 includes a guide part that is designed to direct power cable to the motor 56. The guide portion 79 of the shown variant embodiment of the invention made in the form of a tube and may be an insulating sleeve.

Figure 4 shows a cut in the start-up 14. Issue 14 includes an annular outer portion 80 of the housing that engages with the annular inner part 82 of the housing and surrounding the specified internal part. Each of these parts can be made of several connected components, but in this embodiment of the invention and the outer portion 80 of the housing, and the inner portion 82 of the housing are a single cast product. The inner part of the housing 82 has a Central opening 24 and the outer peripheral surface 84, the form of which determines the surface 28 Coanda extending surface 30, the guide surface 32 and the beveled surface 34.

Along the outer portion 80 of the casing and the inner portion 82 of the housing define an annular internal cavity 86 issue 14. Thus, the inner cavity 86 is located around the opening 24. The inner cavity 86 is limited to the inner peripheral surface 88 of the outer portion 80 of the casing and the inner peripheral surface 90 of the inner portion 82 of the housing. The outer portion 80 of the housing comprises a base 92 which is connected to the open upper end of the upper element 42 of the base 12, for example via a snap connection, and is located above the upper end of the upper element 42 of the base 12. The base 92 of the outer portion 80 of the housing contains an opening through which a primary air flow and helped it become the et into the internal cavity 86 issue 14 from the upper end of the upper element 42 of the base 12 and an open upper end fasteners 63 of the casing of the engine.

The constriction 26 issue 14 is located at the rear of the fan Assembly 10. The constriction 26 is formed through the overlapping portions 94, 96 of the inner peripheral surface 88 of the outer portion 80 of the body and the outer peripheral surface 84 of the inner portion 82 of the housing respectively. In this example, the constriction 26 is essentially ring-shaped and, as shown in figure 4, has an essentially U-shaped cross-section in the section along the line passing through the diameter of the through issue 14. In this example, the overlapping parts 94, 96 of the inner peripheral surface 88 of the outer portion 80 of the body and the outer peripheral surface 84 of the inner portion 82 of the case is made so that the constriction 26 converges towards the outlet 98, intended for the direction of primary air flow over the top surface 28 Coanda. The outlet 98 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 98 is equal to about 1.1 mm In the gap 26 can be provided by the separators, designed for distancing from each other, the overlapping portions 94, 96 of the inner peripheral surface 88 of the outer portion 80 of the body and the outer peripheral surface 84 of the inner portion 82 of the housing to maintain the width of discharge is TVersity 98 at the right level. These separators can be integrated or internal peripheral surface 88 of the outer portion 80 of the housing or the outer peripheral surface 84 of the inner portion 82 of the housing.

As shown in figure 5(a), 5(b) and 5(C), the upper element 42 base made movable relative to the intermediate element 40 of the base and the lower element 38 of the base 12. The top element 42 can move from the first fully tilted position shown in figure 5(b), to the second fully-tilted position shown in figure 5(C). Preferably, the X-axis was tilted at an angle of approximately 10, when the main part is moved from neuklonnogo the positions shown in figure 5(a), to one of the two fully tilted positions. Form the outer surfaces of the upper element 42 of the base and the intermediate element 40 of the base such that the adjacent portions of these outer surfaces of the upper element 42 and the base 12 essentially are flush when the upper element 42 is in naklonena position.

As shown in Fig.6, the intermediate element 40 of the base includes an annular bottom surface 100, which is attached to the lower element 38 of the base, essentially cylindrical side wall 102 and a curved top surface 104. The side wall 102 provides the several holes 106. User-driven controller 22 protrudes through one of the holes 106, and the access to the managed user buttons 20 can be obtained through other openings 106. The curved upper surface 104 of the intermediate element 40 has a concave shape and in General we can say that it has a saddle-node form. In the upper surface 104 of the intermediate element 40 of the base is produced hole 108 that is designed to accommodate the electrical cable 110 (shown in figure 3)extending from the motor 56.

As shown in figure 3, the electrical cable 110 is a flat cable attached to the engine in place 112 connection. Electrical cable 110 extending from the motor 56, out of the lower part 60 of the engine casing through a spiral rib a. The passage of the electrical cable 110 in the form repeats the housing 64 of the impeller, and the shape of the guide portion 79 of a lip seal 76 is such that the electrical cable 110 is able to pass through the flexible sealing element. Tube lip seal 76 provides an opportunity to solidify the power cable and hold the upper element 42 of the base. In the lower part of the upper element 42 of the base electrical cable 110 is placed in the cuff 114.

Additionally, the intermediate element 40 of the base contains four of the support element 120, designed to support the upper is of lament 42 base on the intermediate element 40 of the base. The supporting elements 120 protrude upward from the upper surface 104 of the intermediate element 40 of the base and are located essentially at the same distance from each other and essentially at the same distance from the center of the upper surface 104. The first pair of supporting elements 120 is located along the line b-B shown in Fig.9(a), and the second pair of supporting elements 120 parallel to the first pair of supporting elements 120. As shown in Fig.9(b) and 9(C), each supporting element 120 has a cylindrical outer wall 122, an open upper end 124 and a closed lower end 126. The outer wall 122 of the support element 120 surrounds the rolling element 128, made in the form of ball bearings. Preferably, the radius of the rolling element 128 was a bit smaller than the radius of the cylindrical outer wall 122 so that the rolling element 128 is held in the bearing element 120 and was moving. Elastic element 130 located between the closed lower end 126 of the support element 120 and the rolling element 128, pushing a rolling element 128 from the upper surface 104 of the intermediate element 40 of the base so that a portion of the rolling element 128 stands for the boundary of the open upper end 124 of the support element 120. In this embodiment of the invention the elastic element 130 made in the form of helical springs.

As long as the ANO figure 6, the intermediate element 40 base also contains several guides that are designed to hold the upper element 42 of the base in the intermediate element 40 of the base. The guides also serve to guide the movement of the upper element 42 of the base with respect to the intermediate element 40 bases, so essentially there is no twisting or rotation of the upper element 42 of the base with respect to the intermediate element 40 of the base when moving the upper element 42 of the base of the tilted position, or while moving in an inclined position. Each of the guides is in a direction that is essentially parallel to the axis X. for Example, one of the guides is located along the line D-D shown in figure 10(a). In this embodiment of the invention, several guides are a pair of relatively long inner rails 140 located between a pair of relatively short external guide 142. As also shown in 9(b) and 10(b), the cross section of each of the inner rails 140 has an inverted L-shaped and each of the inner rails 140 includes a wall 144, which is located between the respective pair of supporting elements 120, which is connected with the top surface 104 of the intermediate element 40 of the base and away from it call for the X. Each of the inner rails 140 further comprises a curved flange 146, which is located along the length of the wall 144 and which acts perpendicularly from the top wall 144 toward the adjacent outer rail 142. The cross section of each of the outer rails 142 also has an inverted L-shaped and each of the outer rails 142 includes a wall 148, which is connected with the top surface 52 of the intermediate element 40 of the base and away from it up, and contains a curved flange 150, which is located along the length of the wall 148 and which acts perpendicularly from the top wall 148 in the direction from adjacent the inner guide 140.

As shown in Fig.7 and 8, the upper element 42 base contains essentially cylindrical side wall 160, the annular lower end 162 and a curved base 164, which is located at a distance from the lower end 162 of the upper element 42 of the base to form a recess. Preferably, the grid 50 was made as a unit with the side wall 160. The outer diameter of the side wall 160 of the upper element 40 of the base is essentially the same as the external diameter of the side wall 102 of the intermediate element 40 of the base. The base 164 has a convex shape and may generally be described as having an inverted saddle-type form. In foundations of the Institute of 164 completed the hole 166, designed to accommodate cable 110 extending from the base 164 of the upper element 42 of the base cuff 114. Two pairs of locking elements 168 are up (as shown in Fig) from the border of the base 164. Each pair of locking elements 168 are located along a line extending in a direction that is essentially parallel to the axis X. for Example, one of the pairs of locking elements 168 is located along the line D-D shown in figure 10(a).

With the base 164 of the upper element 42 base is connected convex plate 170 tilt. Plate 170 of the slope is located in the recess of the upper element 42 of the base and its curvature essentially the same as the curvature of the base 164 of the upper element 42 of the base. Each of the locking elements 168 protrudes through one of the corresponding openings 172, located on the border of the plate 170 tilt. The shape of the plate 170 of inclination is such that it defines a pair of convex grooves 174, intended to interact with the rolling elements 128 of the intermediate element 40 of the base. Each chute 174 extends in a direction essentially parallel to the axis X and is designed to accommodate the rolling elements 128 of a corresponding pair of supporting elements 120, as shown in Fig.9(C).

Plate 170 tilt also contains several tracks, each of which is located so that, at the very measures which, partially placed under the respective intermediate guide element 40 of the base and, thus, interact with the guide for the purpose of holding the upper element 42 of the base in the intermediate element 40 of the base and to direct movement of the upper element 42 of the base with respect to the intermediate element 40 of the base. Thus, each of the tracks extends in a direction essentially parallel to the axis X. for Example, one track is located along the line D-D shown in figure 10(a). In this embodiment of the invention several tracks are a pair of relatively long inner tracks 180 located between a pair of relatively short outer tracks 182. As also shown in Fig.9(b) and 10(b), the cross section of each inner track 180 is inverted L-shaped and each of the inner tracks 180 contains essentially vertical wall 184 and a curved flange 186 which acts perpendicularly inward from a portion of the top wall 184. The curvature of the curved flange 186 of each inner track 180 essentially coincides with the curvature of the curved flange 146 of each inner rail 140. The cross section of each outer tracks 182 also has an inverted L-shaped and each of the outer tracks 182 contains essentially vertical wall 188 and Ignaty the flange 190, which stretches along the length of the wall 188 and which acts perpendicularly inward from a portion of the top wall 188. Similar to previous, the curvature of the curved flange 190 of each of the outer tracks 182 essentially coincides with the curvature of the curved flange 150 each outer rail 142. Plate 170 tilt further comprises a hole 192, designed to accommodate the electrical cable 110.

To connect the upper element 42 of the base with the intermediate element 40 of the base plate 170 tilt turn towards the position shown in Fig.7 and 8, and the track plate 174 170 tilt feature directly behind supporting elements 120 of the intermediate element 40 of the base and align them relative to the aforementioned support elements 120. Electrical cable 110, passed through the hole 166 of the upper element 42 of the base, may be threaded through the holes 108, 192 plates 170 tilt and the intermediate element 40 of the base, respectively, for subsequent connection to the controller 44, as shown in figure 3. Next, the plate 170 tilt vidvigayt on top of the intermediate element 40 to the substrate so that the rolling elements 128 interacted with tracks 174, as shown in Fig.9(b) and 9(C), the curved flange 190 of each external track 182 is positioned at a curved flange 150 of the corresponding external is upravlaushiy 142, as shown in Fig.9(b) and 10(b), and a curved flange 186 of each inner track 180 is positioned at a curved flange 146 of the corresponding inner guide 140, as shown in Fig.9(b), 10(b) and 10(C).

When the plate 170 tilt is centered on the intermediate element 40 of the base, the upper element 42 of the base is lowered to the plate 170 tilt so that the locking elements 168 are located in holes 172 of the plate 170 of inclination, and the plate 170 slope was located in the recess of the upper element 42 of the base. Next, the intermediate element 40 of the base and the top element 42 of the base turn, and the element 40 of the base is moved along the direction of X-axis to the first set of holes a located on the plate 170 tilt. Each of these holes a level relative to the cylindrical protrusions a located on the base 164 of the upper element 42 of the base. Thread the screw screwing in each of the holes a order penetration below the ledge a, thereby partially connect the plate 170 tilt with the top member 42 of the base. Next, the intermediate element 40 base move in the opposite direction until the second set of holes 194b, located on the plate 170 tilt. Each of these holes 194b also level relative to cilindric the RCM projections 196b, located at the base 164 of the upper element 42 of the base. Thread the screw screwing in each of the holes 194b order penetration below the ledge 196b to complete the connection plate 170 tilt with the top member 42 of the base.

When the upper element 42 bases attached to the intermediate element 40 of the base and the lower surface 43 of the lower member 38 of the base is located on the support surface, the upper element 42 of the base is supported by the rolling elements 128 supporting elements 120. Elastic elements supporting elements 130 120 push the rolling elements 128 in the direction from the closed lower ends 126 of the supporting elements 120 by a distance which is sufficient to prevent touching the upper surfaces of the intermediate element 40 of the base when the upper element 42 of the base is tilted. For example, as shown in each of figures 9(b), 9(C), 10(b) and 10(C), the lower end 162 of the upper element 42 of the base is pushed from the upper surface 104 of the intermediate element 40 of the base to prevent contact when the upper element 42 of the base is tilted. Next, the action of the elastic element 130 pushes the concave upper surface of the curved flange 186, 190 tracks from the convex bottom surface of the curved flange 146, 150 guides.

For h the Oba to tilt the upper element 42 of the base with respect to the intermediate element 40 of the base, the user moves the upper element 42 of the base in a direction parallel to the X-axis to move the top element 42 of the base in one of two fully tilted positions, shown in figure 5(b) and 5(C), the rolling elements 128 are moved along the tracks 174. When the upper element 42 is in the desired position, the user releases the upper element 42 of the base, which is held in position by the forces of friction generated by contact of the concave upper surfaces of the curved flange 186, 190 tracks and a convex lower surfaces of the curved flange 146, 150 of the guides, these frictional forces resisting movement of the upper element 42 of the base under the action of gravity towards neuklonnogo the position shown in figa. The fully tilted position of the top element 42 of the base are determined by the touch of one of the locking elements 168 of each pair to the corresponding inner guide 140.

To control the fan 10, the user presses the corresponding one of the buttons 20, located on the base 12, the controller 44 starts the motor 56 with the purpose of rotation of the impeller 52. The rotation of the impeller 52 leads to the fact that the primary air stream is absorbed into the base 12 through the channels 18 for air intake. the dependence of the speed of rotation of the motor 56 of the primary air flow may be from 20 to 30 litres per second. The primary air flow passes successively through the housing 64 of the impeller, the upper end of the upper element 42 of the base and the open top end of the mounting fixture 63 engine casing and into the inner cavity 86 issue 14. The primary air flow emitted from the hole 71 for air release, directed forward and upward. In issue 14 of the primary air flow is divided into two air flow, which pass in opposite directions around the Central hole 24 of issue 14. Part of the primary air flow received in issue 14 in the lateral direction, is moved into the internal cavity 86 in the lateral direction without significant direction from the side, the other part of the primary air flow received in issue 14 in the direction parallel to the axis X, is directed through a curved vanes 65A, 65b fasteners 63 of the casing of the engine to allow air flow to enter into the internal cavity 86 in the lateral direction. The blade 65A, 65b provides an opportunity to direct air flow from the direction parallel to the axis X. When the air flows pass through the inner cavity 86, the air enters the constriction 26 issue 14. Preferably, the air flow in the constriction 26 was essentially uniform around the hole 24 issue 14. In each frequent the constriction 26 in the direction of flow of the air stream essentially opposite to the direction in another part of the constriction 26. Part of the air flow is compressed converging part of the constriction 26 and discharged through the opening 98.

The primary air flow emitted from the constriction 26, is directed over the top surface 28 Coanda that 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 98 constriction 26 and from the area around the rear part of issue 14. This secondary air flow passes through the Central hole 24 issue 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 release 14. Depending on the speed of rotation of the motor 56 mass velocity of the air flow coming forward from the fan 10, up to 400 litres per second, preferably up to 600 litres per second, and the maximum speed of the air jet may be in the range from 2.5 to 4 m/s

Uniform distribution of the primary air flow along the constriction 26 issue 14 provides a uniform passage of air flow over the body surface 30. The expanding surface 30 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 expanding what again 30 and the Central axis X of the hole 24 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 30, may seek to continue to diverge. The presence of the guide surface 32, which is located essentially parallel to the Central axis X of the hole 24, further constricts airflow. As a result, air flow can effectively move from release 14, the air flow can quickly be felt at a distance of several meters from the fan 10.

The invention is not limited to the above detailed description. Specialists in this field can offer various changes. For example, the fastening device of the engine casing and the sealing element can have a different size and/or shape than described above and can be located elsewhere in the fan Assembly. The technology to create an airtight seal in the sealing element may be different and may contain additional elements, such as adhesive or fasteners. Plot the shining element, guide portion, the blades and the mounting fixture of the engine casing can be made of any material of suitable strength and flexibility or rigidity, such as foam, plastic, metal or rubber. Move the top element 42 of the base relative to the base can be carried out with the help of the engine and can be triggered by the user by pressing one of the buttons 20.

1. A fan Assembly for creating an air stream containing a release that is installed on the base, which contains the outer casing, the casing impeller located in an external enclosure, in this case the impeller contains a hole for air intake and a hole for air release, the impeller located in the body of the impeller and the motor, is designed to actuate the impeller to create an air stream through the casing impeller, diffuser, located inside the impeller, in the course after the impeller and the power cable is connected to the engine through the diffuser, this release contains an internal cavity, designed for air flow direction from the outlet openings of the air corps of the impeller, and a constriction through which the air flow is emitted from the fan, while between the outer housing and the housing criticallyacclaimed flexible sealing element.

2. The fan Assembly according to claim 1, in which the flexible sealing element connected to the housing of the impeller.

3. The fan Assembly according to claim 1, in which the flexible sealing element is pressed against the outer hull.

4. The fan Assembly according to claim 1, in which the base is essentially cylindrical.

5. The fan Assembly according to claim 1, in which the flexible sealing element has an annular sealing element surrounding the body of the impeller.

6. The fan Assembly according to claim 1, in which the flexible sealing element includes a guide part that is used to direct the cable to the engine.

7. The fan Assembly according to claim 6, in which the guide part includes a flexible tube.

8. The fan Assembly according to any one of claims 1 to 7, in which the diffuser contains a set of edges, and thus the power cable passes through one of the said sets of ribs.

9. The fan Assembly of claim 8, in which the power cable is a flat cable.

10. The fan Assembly according to claim 9, in which the base of the fan Assembly provides a means of directing part of the air flow from the outlet openings of the air corps of the impeller in the direction of the internal passage of the release.

11. The fan Assembly of claim 10, in which the tool includes at least one curved blade.

12. The fan Assembly according to any one of p or 11, in which oterom form one or each curved blade is to change the direction of air flow is approximately 90.

13. The fan Assembly according to any one of claims 1 to 7, which is a safe fan Assembly.

14. The fan Assembly according to any one of claims 1 to 7, which has an axis and forms an opening through which air from outside the fan Assembly is drawn by air emitted from narrowing.

15. The fan Assembly 14, in which the issue surrounds the hole at a distance which is in the range from 50 to 250 mm

16. The fan Assembly according to any one of claims 1 to 7, in which the release contains at least one wall forming an internal passage and narrowing, and narrowing formed by the opposed surfaces of the mentioned at least one wall.

17. The fan Assembly according to clause 16, in which the width of the outlet openings is in the range from 0.5 mm to 5 mm

18. The fan Assembly according to any one of claims 1 to 7, in which the release contains a Coanda surface located near the constriction and above which there is a narrowing of the intended direction of air flow.

19. The fan Assembly p, in which the release contains a diffuser located downstream relative to the Coanda surface.



 

Same patents:

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Fan // 2458255

FIELD: ventilation.

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18 cl, 5 dwg

Fan // 2458254

FIELD: ventilation.

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EFFECT: fan has compact design.

25 cl, 5 dwg

Compression unit // 2455530

FIELD: machine building.

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7 cl, 1 dwg

FIELD: electric engineering.

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Fan unit // 2355916

FIELD: ventilation.

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FIELD: non-positive-displacement pumps.

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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

The fan // 2241860
The invention relates to ventilyatorostroeniya and can be used as part of systems management products aviation and rocketry

The fan // 2194883

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

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