Fan

FIELD: ventilation.

SUBSTANCE: fan is designed for creation of an air jet in a room, an office or other rooms. A bladeless fan includes nozzle (14) installed on base (12), and an air flow creation device. Nozzle (14) includes internal channel (94) intended to receive an air flow, outlet section (26) designed for air flow discharge and several fixed guide vanes (120), each of which is located in internal channel (94) and intended to direct some part of the air flow to outlet section (26). Nozzle (14) determines hole (24) through which the air flow leaving outlet section (26) sucks the air outside the fan.

EFFECT: improvement of comfortable conditions and increase of fan safety.

33 cl, 14 dwg

 

The invention relates to a fan. Preferably the invention relates to a household fan, such as fan tower type, which is designed to create air flow in the room, office or other premises.

Ordinary household fan, as a rule, contains a set of vanes or blades mounted for rotation about an axis, and a driving device for rotating set of blades and, thus, create an air flow. Movement and air circulation produces the cooling wind or light breeze, causing the user to feel the cooling effect, as 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 freestanding and portable devices. Located on floor fans typically include an elongated vertical housing, the height of which is approximately 1 m, and which contains one or more nbrofframes blades, designed to create an air flow, the flow of which is usually from 300 to 500 l/s For the rotation of the outlet of the fan tower type can be used oscillatory mechanism, so that the air flow was directed in a wide area of the room.

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 for the user.

In a domestic environment due to possible limitations of space it is desirable that the appliances were so small and compact as possible. You do not want part of the appliance acted out or to allow the user a lot to touch any moving parts such as blades. Many fans have security features, such as the frame or casing around the blades, so as to prevent damage from moving parts of the vent is the system, however, there may be difficulties with cleaning parts such shrouds.

The task of the invention is to provide an improved fan, which eliminated the disadvantages of the known devices.

The first object of the invention is safe fan for creating an air stream and containing means for creating an air flow and a nozzle that includes an internal channel, used for receiving the air flow outlet section that is designed to release air flow, and a few stationary guide blades, each of which is located in the inner channel and is designed to direct part of the air flow to the exhaust section, and the nozzle defines an opening through which the air stream coming out of the exhaust section, sucks air from the outside of the fan.

With this fan can be generated air flow and cooling effect obtained without the use of a blade fan. Preferably, the use of guide vanes, each of which is designed to direct part of the air flow to the exhaust section, provides an essentially uniform distribution of the air flow through the exhaust section. Due to the fact that a significant portion of the air flow does not resume from relatively small is part of the exhaust section, relatively uniform air flow can be created and directed in a controlled manner to the user or in a room with a small loss of air flow rate. The advantage of the air flow created by the fan according to the invention, consists in that the air flow is small turbulence and a more linear profile of the air flow compared to the air flow created by the known devices. This can improve comfort for the user, which blows the air flow.

Hereinafter in the description, the term "safe" is used to describe a fan, from which the air flow exits or is pushed forward without the use of moving blades. According to this definition safe fan is considered as the fan containing the output area or zone of the issue which has no moving blades, 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, which may be designed to create an air flow rotating device such as a rotor of the motor and/or krill ATCO. The primary air flow can pass from the space of the room or other environment outside of the fan, through the internal channel in the nozzle and then move back into the space of the room through the exhaust area of the nozzle.

Therefore, it is not intended that the description of the fan as safe fan contains a description of the source of energy and elements, such as motors, which are necessary for the implementation of the secondary functions of the fan. Examples of the secondary functions of the fan can be run, adjustment and oscillation fan.

Preferably, the direction in which the air exits from the vent area was essentially perpendicular to the direction in which the air passes at least through a portion of the inner channel. In a preferred embodiment of the invention the air flow passes at least through a portion of the inner channel essentially in the vertical direction, and the air coming from the vent area, is directed essentially horizontally. With this in mind, it is preferable to form the guide blades provided to change the direction of air flow is approximately 90. Preferably, the guide blades were bent so that there was no significant loss of speed of the air flow when n is the Board in the discharge area. Preferably, the inner channel was located in front of the nozzle, while it is preferable that the final site was located at the rear of the nozzle and was made with the possibility of directing air to the front of the nozzle and through the hole. Therefore, in a preferred embodiment of the invention the shape of the outlet section essentially provides a change of direction of flow of each part of the air flow on the opposite during the passage of the air flow of the internal channel to the outlet of the exhaust section. Preferably, the cross-sectional shape of the exhaust area was essentially U-shaped and preferably, the outlet area converged to their final hole.

The nozzle should not provide space for the location of the centrifugal fan. Preferably, the inner channel surrounded the hole. For example, the inner channel can be carried around the hole at a distance of 50 to 250 see In a preferred embodiment of the invention the nozzle is elongated annular nozzle, the height of which is preferably from 500 to 1000 mm, and a width from 100 to 300 mm, it is Preferable that the shape of the nozzle were provided the opportunity to make the air flow at one end and RA is dividing the air flow into two air flow, while it is preferable that each air stream flowing along the corresponding elongated side openings. In this case, it is preferable that a few guiding blades consisted of two sets of guide blades, each set of blades is located so as to direct the corresponding air flow to the exhaust area. Each set of guide vanes are located at some distance from each other for receiving between them a few passages through which the respective parts of the air flow is directed to the exhaust area. In a preferred embodiment of the invention it is preferable that the guide blades of each set are aligned essentially vertically.

Preferably, the nozzle is contained inside and the outside of the housing that define the inner channel, the outlet section and the hole. Each part of the body can contain multiple elements, but in the preferred embodiment of the invention, each of the parts is made of a ring-shaped element. Preferably, the guide blades were located on the inner surface of the inner part of the body of the nozzle, and more preferably, the guide blades were a single entity with the internal surface is Yu inside of the housing of the nozzle. It is preferable to form the outer part of the case was such as to overlap the inside of the shell to determine at least one outlet 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, each outlet was made in the form of slits, the width of which is preferably from 0.5 to 5 mm In the preferred embodiment of the invention the outlet section has several outlets located at some distance from each other around the hole. For example, to determine several located at some distance from each other outlets in the exhaust area can be located one or more sealing elements. Preferably, the outlet had essentially the same size. In a preferred embodiment of the invention, in which the nozzle is annular and elongated, preferably, each outlet was located along the respective elongated sides of the inner periphery of the nozzle.

Preferably, the guide blades are engaged with the inner surface of the outer housing with the La in order to separate the overlapping portions of the inside of the housing and the outer housing of the nozzle. This can provide essentially uniform width of discharge holes around the center hole. The uniformity of the width of the outlet leads to a relatively smooth and substantially uniform air outlet from the nozzle. Depending on the distance between adjacent vanes between them can be located one or more additional separators, preferably also made in one piece with the inner body portion of the nozzle that maintains a uniform distance between the overlapping parts of the inside of the housing and the outer housing of the nozzle.

The nozzle may include a surface, preferably the surface of the Coanda, which is located next to the exhaust section, guides coming out of the air stream over a given surface. In a preferred embodiment of the invention the shape of the outer surface of the inner part of the body of the nozzle is such that specifies the Coanda surface. 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 over the surface and near her, almost "sticking" to the surface or "holding" for her. The Coanda effect t is aetsa proven a 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. Thanks to 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 a preferred embodiment of the invention creates an air flow through the nozzle of the fan. 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 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 of the exhaust area of the nozzle, and, thanks to the move from other areas around the fan prohodit mainly through the hole, defined by the nozzle. The primary air stream directed over the Coanda surface and combined with the entrained secondary air flow is the total air stream leaving or being pushed out of the orifice defined by the nozzle. Total air flow is enough to create a fan air flow, suitable for cooling. 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 exit stream.

In a preferred embodiment of the invention the means for creating air flow through the nozzle contains an impeller driven by the engine. This provides efficient air flow in the fan. Preferably, the means for creating an air stream contained brushless direct current motor and the impeller with an oblique flow. This eliminates friction losses and to ensure 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 Pris the accordance of people suffering from allergies. Although induction motors are commonly used in centrifugal fans, also does not contain brushes, brushless DC motors can provide a much wider range of operating speeds compared to induction motors.

The second object of the invention is the fan that is designed to create an air stream and containing means for creating an air flow and a nozzle that includes an internal channel, used for receiving the air flow outlet section that is designed to release air flow, several stationary guide blades, which are located in the inner channel and each of which is designed to direct part of the air flow to the exhaust section, and a Coanda surface located next to the exhaust section, directing the airflow over the specified surface, and the nozzle defines an opening through which the air stream exiting the outlet of the plot sucks air from outside the fan.

The fan can be located on the table or on the floor or can be mounted to the wall or ceiling. For example, the fan may be portable, located on the floor fan tower, designed to create air flow to circulate in the spirit, for example, in the bathroom, office or other premises.

The third object of the invention is a portable fan tower containing base, in which there are means for creating an air stream, and a housing containing the inner channel designed to receive the air flow outlet section that is designed to release air flow, and a few stationary guide blades, which are located in the inner channel and each of which is designed to direct part of the air flow to the exhaust section, the housing defines an opening through which the air stream coming out of the exhaust section, sucks air from the outside of the fan.

The fourth object of the invention is a nozzle safe fan designed to create an air stream containing an internal channel, used for receiving the air flow outlet section that is designed to release air flow, and a few stationary guide blades, which are located in the inner channel and each of which is designed to direct part of the air flow to the exhaust section, and the nozzle defines an opening through which the air stream coming out of the exhaust section, sucks air from the outside of the fan.

Described in the above first signs, the second and third objects of the invention are equally applicable to the fourth object of the invention and Vice versa.

Preferably, the nozzle contained a Coanda surface located next to the exhaust section, directing the air flow over a given surface. In a preferred embodiment of the invention, the nozzle includes an expanding surface located on the stream after the Coanda surface. The expanding surface directs the air flow coming towards the user, while maintaining a smooth, uniform output flow and the creation of a suitable cooling effect to the user is not felt "choppy" thread.

The invention relates to a fan, containing the above-described nozzle.

Further, as an example will be described variant embodiment of the invention with reference to the accompanying drawings.

Figure 1 shows the domestic fan, front view;

figure 2 - the fan shown in figure 1, a perspective view;

figure 3 - the fan base, depicted in figure 1, a view in section;

figure 4 - fan nozzle, depicted in figure 1, a perspective view with a spatial separation of the parts;

figure 5 is an enlarged view of region A indicated in figure 4;

figure 6 - nozzle depicted in figure 4 front view;

7, a nozzle, a view in section along the line E-E indicated in Fig.6;

on Fig - nozzle, a view in section along the line D-D indicated in Fig.6;

figure 9 is an enlarged view of part of the nozzle shown in Fig;

figure 10, a nozzle, a view in section along the line C-C indicated in Fig.6;

figure 11 is an enlarged view of part of the nozzle shown in figure 10;

on Fig - nozzle, a view in section along the line B-B indicated in Fig.6;

on Fig - enlarged view of part of the nozzle shown in Fig;

on Fig air stream passing through the nozzle section of the fan shown in figure 1.

Figure 1 and 2 shows an embodiment safe fan. In this embodiment of the invention safe fan made in the form of household portable fan 10 tower containing a base 12 and a device for venting in the form of a nozzle 14 mounted on the base 12 and supported by the base 12. The base 12 contains essentially cylindrical outer casing 16 mounted if desired, the disc-shaped plate 18 of the base. The outer casing 16 has several devices 20 for air intake, made in the form of holes in the outer casing 16, through which the primary air flow is sucked into the base 12 from the external environment. In addition, the base 12 includes several user-controlled buttons 21 and the monitor by the user, the controller 22, designed to control the operation of fan 10. In this embodiment of the invention the height of the base 12 is from 100 to 300 mm, and the diameter of the outer housing 16 is from 100 to 200 mm

The nozzle 14 has an elongated annular shape and defines a Central elongated hole 24. The height of the nozzle 14 is from 500 to 1200 mm and width from 150 to 400 mm In this example, the height of the nozzle is equal to about 750 mm, and the width is approximately 190 mm Nozzle 14 includes an exhaust section 26 located at the rear of the fan 10 and is designed to release air from the fan 10 through the opening 24. The exhaust section 26 at least partially located around the opening 24. The inner peripheral surface of the nozzle 14 includes a surface 28 Coanda, which is located next to the exhaust section 26 and over which the outlet section 26 directs the air coming from the fan 10; expanding surface 30 located on the stream after the surface 28 Coanda; and a guide surface 32 located on the stream after the expanding surface 30. The expanding surface 30 diverges from the Central axis X of the hole 24 in such a way as to facilitate the flow of air coming from the fan 10. The angle between the extending surface 30 and the Central axis X of the hole 24 is 5 to 5, moreover, in this embodiment of the invention indicated angle is about 7. 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. In the shown embodiment of the invention the guide surface 32 is essentially parallel to the Central axis X of the hole 24 to provide an essentially flat and essentially smooth surface for the air flow coming from the outlet section 26. The flow after the guide surface 32 is visually attractive beveled surface 34, which ends with 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 equal to about 45. The total depth of the nozzle 14 in the direction along the Central axis X of the hole 24 is from 100 to 150 mm and in this example is approximately 110 mm

Figure 3 shows the base 12 of the fan 10 in the cut. The outer casing 16 of the base 12 includes a bottom portion 40 and the main portion 42 located on the lower part 40 of the housing. In the lower part 40 of the body is the controller, indicated generally by the reference position 44 and is destined is acandy to control the operation of the fan 10 in response to the pressing of the user-controlled buttons 21, which are shown in figures 1 and 2, and/or in response to manipulation of a managed user controller 22. The lower part 40 of the housing can also contain a sensor 46 designed to receive control signals from a remote control (not shown) and to transmit these control signals to the controller 44. Preferably, these control signals are infrared signals. The sensor 46 is located behind the window 47 through which control signals are received in the lower portion 40 of the outer surface 16 of the base 12. Can also be a led (not shown), showing the presence of the fan 10 in the ready mode. The lower part of the housing 40 also includes a mechanism, generally indicated by the reference position 48 and designed for oscillatory movement of the main portion 42 of the housing relative to the lower part 40 of the housing. Preferably, the range of the oscillatory cycle of the main part 42 of the housing relative to the lower part 40 of the housing ranged from 60 to 120, in this embodiment of the invention it is equal to about 90. In this embodiment of the invention, the oscillating mechanism 48 can perform approximately 3 to 5 oscillatory cycles per minute. The power cable 50 extends through a hole made in the lower part 40 of the housing, and is designed to supply electrical energy is political power to the fan 10.

The main part 42 of the housing contains a cylindrical protective net 60, which made a lot of holes 62 for forming devices 20 air inlet located in an external enclosure 16 of the base 12. In the main part 42 of the housing, there is an impeller 64, designed for suction of the primary air flow through the holes 62 in the base 12. Preferably, the impeller 64 had the form of a vane wheel with bias 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 44 in response to user interaction with the controller 22 and/or in response to a signal received from the remote control. Preferably, the maximum speed of rotation of the motor 68 ranged from 5,000 to 10,000 rpm Motor 68 is located in the casing, 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 is connected to the main part 42 of the housing. The shape of the impeller 64 and the housing 76 of the impeller is chosen such that alciada 64 was located close to the inner surface of the casing 76 of the impeller, but have not touched it. Essentially ring-shaped element 78 air inlet connected to the lower part of the body 76 of the impeller and is intended for the direction of primary air flow into the housing 76 of the impeller. The body 76 of the impeller is positioned so that the primary air flow comes out of the housing 76 of the impeller essentially vertically upwards.

Shaped upper portion 80 of the housing is connected with the open upper end of the base part 42 of the housing base 12, for example, via a snap connection. For forming an airtight seal between the main body 42 of the casing and the upper part 80 of the housing base 12 can be used O-shaped sealing element 84. The upper portion 80 of the housing has a chamber 86 which is designed to receive air flow from the main portion 42 of the housing, and a hole 88 through which the primary air flow comes from the base 12 into the nozzle 14.

Preferably, the base 12 additionally contain sound-absorbing foam designed to reduce the propagation of noise from the base 12. In this embodiment of the invention the main part 42 of the housing base 12 includes a first essentially cylindrical element 89a, made of foam and located under the protective grid 60, and a second essentially annular element 89b, in the full foam and located between the housing 76 of the impeller and the element 78 to inlet air.

Next, with reference to figure 4-13 will be described nozzle 14 of the fan 10. The nozzle 14 includes a housing having an elongated annular outer portion 90 connected to the elongated annular inner part 92 of the casing and surrounding her. The inner portion 92 of the housing defines a Central opening 24 of the nozzle 14 and contains an outer peripheral surface 93, 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 90 of the housing and the inner portion 92 of the housing define an annular inner channel 94 of the nozzle 14. The inner channel 94 is located in front of the fan 10. The inner channel 94 is located around the opening 24 and, therefore, contains two essentially vertical side, each of which is adjacent to the corresponding elongated side of the center hole 24, the upper curved portion connecting the upper ends of the vertical parts; and the lower curved portion connecting the lower ends of the vertical parts. The inner channel 94 limited to the inner peripheral surface 96 of the outer part of the housing 90 and the inner peripheral surface 98 of the inner portion 92 of the housing. The outer portion 90 of the housing comprises a base 100, which is connected with the upper part 80 of the housing base 12, for example, using zamalkawy is its compounds, and located above the upper part 80 of the housing. The base 100 of the outer part of the housing 90 has an aperture 102 that is aligned with the hole 88 of the upper portion 80 of the housing base 12 and through which the primary air flow enters the lower curved portion of the inner channel 94 of the nozzle 14 from the base 12 of the fan 10.

As shown in Fig and 9, the exhaust section 26 of the nozzle 14 is located at the rear of the fan 10. The exhaust section 26 is formed by overlapping parts 104, 106 of the inner peripheral surface 96 of the outer portion 90 of the body and the outer peripheral surface 93 of the inner portion 92 of the housing, respectively. In this embodiment of the invention the outlet section 26 contains two parts, each of which is located along the respective elongated sides of the Central hole 24 of the nozzle 14 and communicates with the corresponding vertical part of the inner channel 94 of the nozzle 14. The air flow passing through each of the exhaust section 26, essentially perpendicular to the air flow passing through the corresponding vertical portion of the inner channel 94 of the nozzle 14. Each of the exhaust section 26 has an essentially U-shaped cross-section, resulting in the direction of air flow is essentially reversed when passing air flow vypusk is the second portion 26. In this embodiment of the invention the overlapping portion 104, 106 of the inner peripheral surface 96 of the outer portion 90 of the body and the outer peripheral surface 93 of the inner part 92 of the case is made so that each of the exhaust section 26 includes a tapering portion 108, converging to the outlet 110. Every nozzle 110 is made in the form of essentially vertical slit, the width of which is preferably continuous and ranges from 0.5 to 5 mm In this embodiment of the invention, the width of each outlet 110 is approximately 1.1 mm

Thus, we can assume that the outlet section 26 has two outlet openings 110, each of which is located on the corresponding side of the Central hole 24. As shown in figure 4, the nozzle 14 further comprises two curved sealing element 112, 114, each of which forms a seal between the outer part 90 of the housing and the inner part of the housing 92 so that the leakage of air from the curved parts of the inner channel 94 of the nozzle 14 is essentially absent.

In order to direct the primary air flow into the exhaust section 26, the nozzle 14 includes several stationary guide vanes 120, which are located inside the inner channel 94 and each of which is designed to direct part of the air p is power to the outlet section 26. The guide vanes 120 are shown in figure 4, 5, 7, 10 and 11. Preferably, the guide blades 120 have been made in one piece with the inner peripheral surface 98 of the inner part 92 of the nozzle body 14. The guide vanes 120 are curved so that there was no significant loss of air speed in his direction in the outlet section 26. In this embodiment of the invention the nozzle 14 has two sets of guide vanes 120, with each set of guide vanes 120 directs the air flowing along the corresponding vertical portion of the inner channel 94 to the relevant part of the outlet section 26. Each set of guide vanes 120 are essentially vertically aligned and evenly spaced relative to each other for the formation of several passages 122 between the vanes 120, through which the air is directed into the exhaust section 26. Uniform distribution of the guide vanes 120 provides essentially uniform distribution of the air flow along the length of the exhaust section 26.

As shown in figure 11, it is preferable that the shape of the guide vanes 120 was such that the portion 124 of each of the guide blades 120 can interact with the inner peripheral surface 96 of the outer part of the housing 90 of the nozzle 14 for separation lane is kryvushyna parts 104, 106 the inner peripheral surface 96 of the outer portion 90 of the body and the outer peripheral surface 93 of the inner portion 92 of the housing. This can help maintain essentially constant width of each of the exhaust holes 110 along the length of each of the exhaust section 26. As shown in Fig.7, 12 and 13, in this embodiment of the invention along the length of each of the exhaust section 26, there are additional separators 126 can also be used to separate the overlapping portions 104, 106 of the inner peripheral surface 96 of the outer portion 90 of the body and the outer peripheral surface 93 of the inner portion 92 of the housing to maintain the required width of the outlet 110. Each separator 126 is located essentially in the middle between two adjacent vanes 120. For ease of manufacture it is preferable that the separator 126 were made in one piece with the outer peripheral surface 98 of the inner part 92 of the nozzle body 14. If desired between adjacent vanes 120 can be located more separators 126.

In use, when the user clicks on the corresponding one of the buttons 21, located on the base 12 of the fan 10, the controller 44 starts the motor 68 with the purpose of rotation of the impeller 64 that leads to the fact that h is of primary air flow is sucked into the base 12 of the fan 10 through the device 20 to the air inlet. The flow rate of primary air flow can be up to 30 l/s, more preferably up to 50 l/s Primary air flow passes through the housing 76 of the impeller and the upper portion 80 of the base 12 and into the base 100 outer part 90 of the nozzle body 14, where the primary air flow enters into the inner channel 94 of the nozzle 14.

As shown in Fig, primary air flow, indicated by the reference position 148 is divided into two air flow (one of them Fig denoted by the reference position 150), which pass in opposite directions around the Central hole 24 of the nozzle 14. Each air stream 150 is included in a corresponding one of the vertical parts of the inner channel 94 of the nozzle 14 and is moved essentially vertically upwards through each of the parts of the inner channel 94. A set of guide vanes 120, located in every part of the inner channel 94 that directs air flow to 150 parts exhaust section 26, which is located next to the vertical part of the inner channel 94. Each of the guide vanes 120 sends the corresponding part 152 of the air flow to 150 parts exhaust section 26 so that there is essentially uniform distribution of the air flow 150 along the length of the exhaust section 26. The shape of the guide vanes 120 is such that each part 152 of the air flow is and 150 is fed into the exhaust section 26 essentially horizontally. In each of the exhaust section 26 in the direction of flow of the air stream essentially reversed, as shown by the reference position 154 on Fig. Part of the air stream is compressed, as part of the outlet section 26 converges towards the outlet 110, passes around the separator 126 and exits through the outlet 110 again in essentially horizontal direction.

The primary air stream coming out of the exhaust section 26, is directed over the top surface 28 of the Coanda nozzle 14, which leads to the creation of secondary air flow through the entrainment of air from the external environment, in particular from the area around the exhaust holes 110 of the exhaust section 26 and from the area around the rear part of the nozzle 14. This secondary air flow passes through the Central hole 24 of the nozzle 14 where it is combined with the primary air flow and the result is the total air flow 156 or air jet, pushed forward from the nozzle 14.

Uniform distribution of the primary air flow along the exhaust section 26 of the nozzle 14 provides uniform airflow 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 area managed expanded who I am. The relatively small angle between the extending surface 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 and the formation of eddies in the field of extension. 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. In the absence of the guide vanes 120 large part of the primary air flow will tend to leave the fan 10 through the top of the exhaust section 26 and exit from the discharge area 26 in the upward direction at an acute angle to the Central axis of the hole 24. As a result, this will lead to uneven distribution of air in the air stream created by the fan 10. Moreover, a large part of the air flow from the fan 10 will not be properly distributed expanding surface 30, which creates an air stream with a much greater turbulence.

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, provides direction to the air the aqueous stream to the user or in the bathroom.

Depending on the speed of rotation of the motor 64, the mass flow rate of the air flow coming forward from the fan 10 can be up to 500 l/s, preferably up to 700 l/s and the maximum speed of the air jet may be from 3 to 4 m/s

The invention is not limited to the above detailed description. Specialists in this field can offer various changes.

For example, the base and the nozzle of the fan may have other dimensions and/or shape. The outlet of the outlet section may be different. For example, the outlet of the exhaust area can be wider or narrower to maximize air flow. The air stream exiting the outlet section can pass over a surface, such as the Coanda surface, but alternatively, the air flow can be released through the exhaust section and is directed forward from the fan without passing over the adjacent surfaces. The Coanda effect can be achieved for a range of different surfaces, or to achieve the required flow and entrainment can be used several internal and external structures. Expanding the surface can be of different lengths and have different designs. The guide surface may be of different lengths and can be located in different places and is oriented differently depending on the different requirements for the fan or the different types of fans. In the Central opening defined by the nozzle can be located a variety of items, such as lighting devices, a clock or LCD display.

1. Safe fan for creating an air stream and containing means for creating an air flow and a nozzle that includes an internal channel, used for receiving the air flow outlet section that is designed to release air flow, and a few stationary guide blades, each of which is located in the inner channel and is designed to direct part of the air flow to the exhaust section, and the nozzle defines an opening through which the air stream coming from the exhaust area, has the possibility of suction of air from outside the fan, the shape of the inner channel provides the division adopted the air flow into two air flow, while a few the guide blades are two sets of guide vanes, each of which is located with the option of sending a corresponding air flow to the exhaust section.

2. The fan according to claim 1, in which the shape of the guide vanes changes the air flow direction is approximately 90.

3. The fan according to claim 1, in which the shape of the final section, on), the Wu, provides a change of direction of flow of each part of the air flow to the opposite.

4. The fan according to claim 1, in which the shape of the inner channel provides movement of each of the air flow along the corresponding side of the hole.

5. The fan according to any one of claims 1 to 3, wherein the nozzle has an internal part of the housing and the outside of the housing, which together define the inner channel and the outlet section, with the guide vanes are located on the inner surface of the inner part of the body of the nozzle.

6. The fan according to claim 5, in which the outlet section has an outlet located between the outer surface of the inner part of the body of the nozzle and the inner surface of the outer housing of the nozzle.

7. The fan according to claim 6, in which the exhaust hole is made in the form of slits.

8. The fan according to claim 6, in which the width of the outlet is from 0.5 to 5 mm

9. The fan according to claim 6, in which the outlet section has several outlets located at a distance from each other around the hole.

10. The fan according to claim 9, in which the outlet openings are essentially the same size.

11. The fan according to claim 5, in which the guide blades are made interoperable with the inner surface of the outer housing of the nozzle.

12. Valve is the PR according to any one of claims 1 to 3, in which the inner channel goes around the hole at a distance of 50 to 250, see

13. The fan according to any one of claims 1 to 3, in which the nozzle is an elongated annular nozzle.

14. The fan according to any one of claims 1 to 3, in which the means for creating air flow through the nozzle contains an impeller driven by the engine.

15. The fan 14 in which the motor is a brushless DC motor, and the impeller is the impeller with an oblique flow.

16. The fan according to any one of claims 1 to 3, which is a portable fan tower type.

17. Nozzle safe fan designed to create an air stream containing an internal channel, used for receiving the air flow outlet section that is designed to release air flow, and a few stationary guide blades, each of which is located in the inner channel and is designed to direct part of the air flow to the exhaust section, and the nozzle defines an opening through which the air stream coming from the exhaust area, has the possibility of suction of air from outside the fan, the shape of the inner channel provides the division adopted the air flow into two air flow, while some areas the existing blades are two set of guide blades, each of which is located with the option of sending a corresponding air flow to the exhaust section.

18. The nozzle on 17, in which the shape of the guide vanes changes the air flow direction is approximately 90.

19. The nozzle on 17, in which the final form of the plot, in essence, provides the direction of flow of each part of the air flow to the opposite.

20. The nozzle on 17, which form the inner channel provides movement of each of the air flow along the corresponding side of the hole.

21. The nozzle according to any one of PP-19, containing the inner housing and the outer housing, which together define the inner channel and the outlet section, with the guide vanes are located on the inner surface of the inner part of the body of the nozzle.

22. The nozzle according to item 21, in which the outlet section has an outlet located between the outer surface of the inner part of the body of the nozzle and the inner surface of the outer housing of the nozzle.

23. The nozzle according to article 22, in which the exhaust hole is made in the form of slits.

24. The nozzle according to article 22, in which the width of the outlet is from 0.5 to 5 mm

25. The nozzle according to article 22, in which the outlet section has several outlets located at a distance from each other around the hole.

26. The nozzle on A.25, in which the outlet openings are essentially the same size.

27. The nozzle according to item 21, in which the guide blades are made interoperable with the inner surface of the outer housing of the nozzle.

28. The nozzle according to any one of PP-19, in which the inner channel goes around the hole at a distance of 50 to 250, see

29. The nozzle according to any one of PP-19, which represents an elongated annular nozzle.

30. The nozzle according to any one of PP-19, which contains a surface that is located next to the exhaust section, directing the air flow over a given surface.

31. The nozzle according to item 30, in which said surface is the surface of the Coanda.

32. The nozzle on p containing the expanding surface located on the stream after the Coanda surface.

33. Fan containing a nozzle according to any one of PP-19.



 

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