Fan

FIELD: ventilation.

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

EFFECT: creation of a compact low noise safe device.

28 cl, 5 dwg

 

The invention relates to a fan, preferably to the household, such as a table fan to provide air circulation and create an air flow in a room, office or other domestic premises.

Traditional household fan usually contains a set of blades which are mounted for rotation about an axis, and a drive for rotation of the blades to create air flow. The movement and circulation of the air flow creates a cooling wind or light wind, causing the user to feel cool due to heat dissipation by convection and evaporation. Produced by fans of this type have many different sizes and shapes. For example, a ceiling fan may have a diameter of more than 1 m and usually hangs from the ceiling to create a downward flow of air for the purpose of cooling the room. On the other hand, table fans often have a diameter of approximately 30 cm and are usually nezakriplenih and portable.

The disadvantage of this type of structures is the fact that created by the rotating fan blades, the air flow is not perceived by the user evenly. This is due to changes of flow along the surface of the blade or along the outer surface of the fan. Irregular or intermittent air is hydrated flow can be felt as a sequence of pulses or impulses of the air and can create noise. Another drawback is that created by the fan cooling effect decreases with increasing distance to the user, and the user may not be in the area or at a distance, where you can feel the maximum cooling effect. This means that to achieve the effect of the fan should be installed near the user.

In documents US 2488467, US 2433795 and JP 56-167897 described other types of fans. The fan on patent US 2433795 instead of the fan blades has spiral grooves in the rotating case. Circulating fan, described in the document US 2488467, the air flow exits through the group of nozzles. This fan has a large base that contains the motor and the blower or fan to create air flow.

For domestic premises, it is desirable that the devices were small and were more compact, due to the limited space. For example, a fan base that is installed on the Desk or next to the table, reduces the area required for papers, computer or other office equipment. Often, to simplify the connection of multiple devices must be located in the same area near the power source and close to other devices.

The shape and design of the fan not only menaut working area, available to the user on the Desk, but can also serve as a barrier for the passage to the table of natural light (or light from artificial sources).

In addition, it is not desirable that the parts of the apparatus acted out, as for security reasons, and due to complications cleaning of such parts.

The objective 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 to create an air stream containing means for creating an air flow and a nozzle having an inner channel for receiving air and an outlet for release of air flow, and the nozzle is located around the axis and limits the opening through which air from outside the fan pulled air flow emerging from the outlet, and the nozzle includes a surface on which is located an outlet for air flow direction and which contains a diffuser section, receding from the axis, and a guide section located downstream after the diffuser section and at an angle thereto.

The advantage of this design is that to create an air flow and cooling effect requires no blade fan. Safe the design provides noise reduction due to the absence of sound, occur when moving fan blades in the air, and reducing the number of moving parts. Beveled cone area contributes to the improvement of the characteristics of the fan, thus reducing to a minimum the noise and friction loss on the surface. The location and angle of the guide section provide the formation of the profile emerging from the apertures diverging air flow. Another advantage is that with the passage of the air flow by directing the plot is an increase in the average speed, which increases the perceived user a cooling effect. The advantage is that the location of the sending and diffuser sections directs the air flow towards the user, while providing a smooth and uniform flow of air without making the user feel stutter thread. The fan according to the invention provide acceptable cooling, which is directed and focused compared to the air flow created by famous fans.

In further description, in particular, the preferred option to run the fan, the term "safe" is used to describe a fan in which the air flow is created or produced without the use of moving blades. According to this, the distribution can be considered, that safe fan has an output or outlet area, in which no moving blade and from which the air flow is directed towards the user or to the premises. The exhaust area safe fan may have a primary thread created by one of many different sources, such as pumps, generators, motors or other devices for moving fluid, and which may contain a rotating device, such as a rotor of the motor and/or impeller to create an air flow. Created by the primary airflow can be accessed from the volume of the room or other space outside of the fan into the fan through the inner channel to the nozzle, and then back to the room space through the outlet nozzle.

Thus, a description of the safe fan does not involve a detailed description of energy sources and elements, such as motors, necessary for the implementation of additional functions of the fan. Additional features of the fan can be the backlight, and the regulation of its provisions.

Preferably the angle between the diffuser portion and the axis is in the range of 7-20, and more preferably is about 15. This arrangement provides efficient air flow. In predpochtitel the Ohm variant of the invention, the guide section is located symmetrically around the axis. With this arrangement, the guide section creates a symmetrical or uniform output surface which is generated by the fan air flow. Preferably, the guide section is located around an axis essentially in the form of a cylinder. Due to this, you create a zone for air flow direction, extending around the perimeter of the hole bounded by the nozzle of the fan. In addition, the cylindrical configuration of the node that includes the nozzle, contributes to the cleanliness and smoothness of its surface. Design without protruding elements is preferred and attractive to the user or consumer.

Preferably the nozzle continues, at least 50 mm in the direction of the axis. Preferably the diameter located around the axis of the nozzle is 300-180 mm This allows you to direct the air exhaust zone and outlet openings, which, for example, are used to cool the upper part of the body or face of the user when working at a Desk. Preferably the size of the guide section in the axis direction is 5-60 mm, more preferably about 20 mm, This distance enables the creation of an acceptable design guide for the direction and concentration coming out of the fan air flow and to create acceptable is Gladysheva effect. The preferred dimensions of the nozzle to provide a compact layout while creating an acceptable air flow coming from the fan, to cool the user.

The nozzle may include a Coanda surface, which is adjacent to the outlet and which is the outlet for air flow direction. The Coanda surface is a known type of surface over which the flow of fluid emerging from the outlet located near the surface, there is a Coanda effect. Fluid tends as close as possible to flow around the surface, as if clinging to it. The Coanda effect is a proven and well-documented way of suction air, whereby the primary air flow is directed over the Coanda surface. The signs surface Canada and its impact on fluid flow can be found in such articles, how to become Reba in the journal Scientific American, vol. 214, June 1963, p.84-92. Through the use of the Coanda surface on the outside of the fan is provided by delaying a larger volume of air through the opening by means of the air leaving the outlet.

In a preferred embodiment of the invention the air flow is created through the nozzle of the fan. Further on is Isani this air flow, called primary air flow. The primary air flow is produced through the outlet nozzle and preferably passes through the Coanda surface. This primary flow captures the air surrounding the outlet nozzle, which creates the effect of increasing supply to the user as the primary stream and the captured air. Entrapped air in this description is called the secondary air flow. Secondary air is pulled from the scope or part of the premises or surrounding the outlet nozzle space, and is also moved in from other areas around the fan and passes mainly through the hole formed by the nozzle. The primary air stream is directed over the Coanda surface, in combination with the captured secondary air flow creates a common air flow, produced or directed forward from the opening bounded by the nozzle. Total air flow is sufficient to create a fan air flow required for cooling. Preferably the capture of air around the outlet of the nozzle is such that the primary air flow is enhanced in at least five times, and more preferably at least ten times, while ensuring a uniform release of total output.

The air stream produced from a restricted nozzle hole is ment, may have a roughly rectangular plot of velocity with respect to the diameter of the nozzle. In General, the flow velocity and its distribution can be described as a period of structural core, which in some areas is over in a laminar or partially laminar mode. The advantage of the air flow delivered by the fan to the user is its low turbulence and a more linear distribution of velocity than the air flow generated by known devices. Another advantage is that the air flow from the fan can be directed forward from the hole and the area around the exhaust opening of the nozzle in a laminar mode, which gives greater cooling effect for the user in comparison with the centrifugal fan. Laminar air flow with low turbulence can more efficiently move from the exit point of the stream, and it is a smaller loss of energy and speed in turbulence than the air flow created by the famous fans. The advantage for the user is that the cooling effect can be felt even at a distance, and the total efficiency of the fan is increased. This means that the user can set the fan at some distance from the working area of the Desk and the floor is part of the cooling effect of the fan.

Preferably the nozzle is a loop. The shape of the nozzle is not limited to the requirements to provide volume for blade fan. In a preferred embodiment of the invention the nozzle is annular. Due to the annular nozzle is provided the ability to create a wide working area of the fan. In yet another preferred embodiment of the invention the nozzle is at least partially circular shape. This form allows you to create multiple versions of a design fan, extending the selection to the user or consumer. In addition, in this form of nozzle may be manufactured as a single part, which reduces the complexity of the fan and, therefore, reduces production costs. In an alternative embodiment of the invention, the nozzle may include an inner housing part and an outer housing part, which define the inner channel, the outlet hole and the hole of the fan. Each section can contain a group of items or a single annular element.

Preferably the nozzle has at least one wall that defines an internal channel and an outlet and containing opposite surface defining the outlet. Preferably specified at least one wall includes an inner wall and in esnou wall, when this outlet is formed between the opposing surfaces of the inner wall and outer wall. Preferably the outlet has an outlet, and the distance between the opposing surfaces and the outlet is preferably in the range of 0.5 to 5 mm due to such a configuration, the nozzle can provide the required flow properties and to direct the primary air flow over the surface, creating a relatively uniform or close to uniform total air flow reaching the user.

In a preferred embodiment, the fan means for creating air flow through the nozzle contains an impeller driven by an electric motor. This creates enough flow for the fan. The means for creating an air stream preferably contains a brushless direct current motor and a diagonal impeller. This allows you to avoid friction losses and the occurrence of particles of carbon brushes, which are used in traditional brush-type motors. The reduction in the number of carbon particles and fumes is an advantage for clean or sensitive to contamination of the premises, such as a hospital room or space around people with allergies. Although induction motors typically use is administered in a paddle fans, also have no brushes, brushless direct current motor can provide a much broader range of operating speeds than the induction motor.

The nozzle can be made to rotate relative to the base or other part of the fan. This allows as necessary to direct the nozzle towards the user or away from him. The fan can be mounted on the Desk, on the floor, on the wall or on the ceiling. This allows you to magnify a portion of the premises on which the user creates cooling.

The second object of the invention is a nozzle safe fan for creating an air stream having an inner channel for receiving the air flow and an outlet for release of air flow, and the nozzle is located around the axis and limits the opening through which drags air from outside the fan using the air flow released through the outlet, the nozzle contains a surface on which is located an outlet for air flow direction and which contains diffuser plot, plot, receding from the axis, and a guide section located downstream after the diffuser section and inclined to the latter.

The characteristics of the first object invented who I can also be used in the second object of the invention, and Vice versa,

Next, described one of the embodiments of the invention with reference to the drawings.

Figure 1 shows a fan, front view;

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

figure 3 is a section along the line a-a in figure 1;

figure 4 - part of the fan, shown in figure 1, detail view in section on an enlarged scale;

figure 5 is a section along the line b-b In figure 3, a view in the direction of the arrow F.

As shown in figure 1, the fan 100 includes an annular nozzle 1 forming the Central hole 2. As shown in figure 2 and 3, the nozzle 1 has an internal channel 10, the discharge opening 12 and the surface 14 Coanda adjacent to the outlet 12. The surface 14 Coanda located such that the primary air flow emerging from the outlet openings 12 and directed to the surface 14, is amplified due to the Coanda effect. The nozzle 1 is mounted on a base 16, containing the outer casing 18. The base 16 has several located on the outer body 18 of the buttons 20 to control the fan 100. The fan has a height H, width W and depth D, as shown in figures 1 and 3. The nozzle 1 is located essentially perpendicular to the X axis and around it. The height H of the fan is measured perpendicular to the axis X from the edge of the base 16, remote from the nozzle 1, to the edge of the nozzle 1, remote from the base 16. In this embodiment, the implementation of the ing the invention, the fan 100 has a height H of about 530 mm, however, the fan 100 may have any desired height. The base 16 and the nozzle 1 has a width W, measured in the direction perpendicular to the height H and perpendicular to the axis X. In figure 1 base width 16 denoted by W1, and the width of the nozzle 1 is denoted by W2. The depth of the base 16 and the nozzle 1 is measured in the direction X. In figure 3 the base depth 16 denoted by D1, and the depth of the nozzle 1 is denoted by D2.

Figure 3-5 shows other structural features of the fan 100. Inside the base 16 is an electric motor 22 to create an air flow through the nozzle 1. The base 16 has an essentially cylindrical shape and in this embodiment of the invention the diameter (i.e. the width W1 and depth D1 is about 145 mm, Base 16 also has an input hole 24A and 24b for air formed in the outer casing 18. Inside the base 16 is a housing 26 of the motor 22. The motor 22 is installed in the housing 26 and is held from displacement rubber support or sealing element 28.

In the shown embodiment of the invention, the motor 22 is a brushless direct current motor. The outside of the motor 22 extends a rotatable shaft to which is connected the impeller 30, and the flow after the impeller 30 is the diffuser 32. The diffuser 32 has fixedly mounted disk with the spiral blades.

The entrance 34 to the impeller 30 is in communication with the inlet holes 24A, 24b for air formed in the outer casing 18 of the base 16. The output 36 of the diffuser 32 and the exit of the impeller 30 is in communication with the hollow passages or channels located inside the base 16 to provide a passage for air flow from the impeller 30 to the inner channel 10 of the nozzle 1. The motor 22 is connected with the electrical connector and to a power source and controlled by a control unit (not shown conventionally). The connection between the control unit and several buttons 20 allows the user to control the fan 100.

Next, with reference to figure 3 and 4 described the structural features of the nozzle 1. The nozzle 1 has a ring shape. In this embodiment of the invention, the nozzle 1 has a diameter of about 350 mm, however, the nozzle may be of any desired diameter, such as about 300 mm, an Inner channel 10 is annular and is made in the form of a continuous loop or passage within the nozzle 1. The nozzle 1 is formed by at least one wall bounding the inner channel 10 and the outlet 12. In this embodiment of the invention the nozzle 1 includes an inner wall 38 and outer wall 40. In the shown embodiment of the invention the walls 38, 40 form a loop or bend, so that the inner wall 38 and outer wall 40 are approaching each other. Protivopolojnosti inner wall 38 and outer wall 40 together form a discharge outlet 12, passing around the axis X. the Outlet 12 has a plot 42, tapering towards the outlet 44. The output 44 is a gap or distance between the inner and outer walls wall 38 and 40 of the nozzle 1. The gap between the opposing surfaces of the walls 38 and 40 at the output 44 of the outlet 12 is selected in the range of 0.5-5 mm the Selection of the gap depends on the performance requirements of the fan. In this embodiment of the invention, the output 44 has a width of about 1.3 mm, while the exhaust port 12 and outlet 44 are concentrically with the inner channel 10.

The outlet opening 12 adjacent to the surface 14 Coanda. The surface of the nozzle 1 includes a diffuser section 46 located on the stream after the surface 14 Coanda, and the guide section 48 located on the stream after the diffuser section 46. Diffuser section 46 contains receding from the axis X of the surface 50 of the diffuser, contributing to a flow of air discharged from the fan 100. In the example shown in figure 3, the discharge opening 12, and the overall design of the nozzle is such that the angle between the surface 50 of the cone and the axis X is approximately 15. The angle is chosen in such a way as to provide sufficient air flow across the surface 14 Coanda and diffuser section 46. The guide section 48 provides a guide surface 52 located under at the scrap to the surface 50 of the diffuser to further improve the efficiency of supply of cooling air to the user. In the shown embodiment of the invention the guide surface 52 is essentially parallel to the axis X and is an essentially cylindrical and essentially smooth surface for the air flow emerging from the outlet openings 12.

In the shown embodiment of the invention the surface of the nozzle 1 ends extending surface 54 located on the stream after the guide section 48 and remote from the outlet 12. Extending surface 54 includes a beveled section 56 and an end section 58 that defines a circular opening 2, which gives an air flow and is directed from the fan. The beveled section 56 deviates from the X-axis so that the angle between the chamfered portion and the axis is about 45. The beveled section 56 is inclined to the axis at an angle that is steeper than the angle between the surface 50 of the cone and the axis. The visual effect of smoothness of the bevel is achieved by mowing section 56 extending surface 54. Form and transfer of the expanding surface 54 diverts attention from a relatively wide area of the nozzle 1, containing diffuser section 46 and the guide section 48. The user's eye is directed beveled section 56 outward and away from the axis X to the end section 58. This design is thin is th, lightweight and contains no protruding parts. Such designs are often preferred by users or consumers.

The nozzle 1 in the axial direction continues for a distance of about 50 mm Diffuser section 46 and the public profile of the nozzle is partly based on the form of the aerodynamic surface of the wing. In the shown embodiment of the invention the diffuser section 46 occupies about two thirds of the depth of the nozzle 1, and the guide section 48 occupies about one sixth of the total depth of the nozzle 1.

The fan operates as follows.

When the user clicks on the desired button of a few buttons 20 to activate or deactivate the fan 100, the motor 22 signal or other message. The motor 22 is driven, and the air is pulled into the fan 100 through the inlet openings 24A, 24b. In a preferred embodiment of the invention the flow of air is drawn approximately 20-30 l/s, preferably about 27 l/C. the Air flows through the outer casing 18 and moves along the route, shown in figure 3 by the arrow F', to the input 34 of the impeller 30. The air flow emerging from the outlet 36 of the diffuser 32 and the impeller 30, is divided into two air flow, which continue to move in opposite directions along the inner channel 10. The air flow is supplied at the entrance to the outlet 12 and additionally narrows at the output 44 of the outlet 12. The narrowing puts pressure on the system. The motor 22 creates an air flow through the nozzle 1 with a pressure of at least 400 kPa. This air flow overcomes the pressure created by the contraction, and exits through the outlet 44 in the form of primary air flow.

The output of the primary thread creates a zone of reduced pressure in the region of the inlet openings 24A, 24b, resulting in the delay of additional air into the fan 100. The fan 100 creates a strong air flow through the nozzle 1 and output port 2. The primary air flow is directed over the surface 14 Coanda, diffuser surface 50 and the guide surface 52. The primary air flow is concentrated or focused in the direction of the user by means of the guide section 48 and the inclination of the guide surface 52 relative to the diffuser surface 50. The secondary air flow is created due to the entrainment of air from the environment, particularly from the area around the outlet 44 and around the outer edge of the nozzle 1. A portion of the secondary air flow captured by the primary air flow may also be directed along the surface 48 of the diffuser. This secondary air flow passes through the hole 2, where it combines with the primary air stream and creates the total air flow is directed forward from the La 1.

The combination of grasping and gain leads to the creation of the total air flow at the output port 2 of the fan 100, greater than the airflow at the outlet of the fan without increasing the Coanda surface next to the exhaust area.

The following describes the distribution and movement of air flow through the diffuser section 46 from the point of view of the dynamics of liquid and gas passing over the surface.

In the General case, the diffuser is designed to reduce the average speed of the fluid, such as air. This is achieved through the movement of air through the scope with adjustable extension. Expanding the channel or design forming space through which moves fluid should ensure the gradual expansion of the fluid. Abrupt or rapid expansion will lead to the disturbance of the air flow and the formation of turbulence in the expansion area. In this case, the air flow can be separated from the growing surface, and there will be uneven flow. Turbulence lead to increased turbulence and associated noise in the air stream, which may be undesirable, especially in household appliances, such as fans.

To obtain a gradual expansion of the air and the gradual reduction of the speed of the diffuser can be made with a geometric expansion In the above-described device, the design of the diffuser section 46 allows to avoid turbulence and the formation of turbulence in the fan.

The air flow passing through the diffuser surface 50 and beyond diffuser section 46, may seek to continue to expand, as it expanded in the channel formed by the diffuser section 46. The influence of the guide section 48 to the air flow such that the air flow coming from the fan holes, concentrated or focused in the direction of the user or indoors. The final result is to increase the cooling effect for the user.

The combination of better air flow with a smooth expansion and concentration afforded diffuser section 46 and the guide section 48 creates a smoother and less turbulent output compared with the output flow fan without diffuser and guide sections 46 and 48.

Strengthening and laminar character of the air flow ensures the continuity of the air flow directed toward the user from the nozzle 1. In a preferred embodiment of the invention the flow of air sent from the fan 100 is not less than 450 l/s, and preferably is in the range from 600 to 700 l/s Flow rate at a distance of up to 3 diameters of the nozzle (i.e., about 1000-1200 mm) from the user is about 400-500 l/s Total air flow has a speed of about 3-4 m/s higher / min net and is achieved by reducing the angle between the surface and the axis X. A smaller angle provides a more focused and aimed the total output of the air flow. This air flow is coming out with higher speed, but with less consumption. Conversely, the greater the flow rate can be achieved by increasing the angle between the surface and the axis. In this case, the speed of the output air flow is reduced and the flow rate of the generated stream increases. Thus, the characteristics of the fan can be changed by changing the angle between the surface and the x axis.

The invention is not limited to the above detailed description. To a person skilled in the art will not be difficult to develop other design options. For example, the fan may have a different height or diameter. The base and the nozzle of the fan can have a different depth, width and height. The fan does not need to be installed on a Desk, it can also be made with the possibility of a free installation or mounting on the wall or on the ceiling. The shape of the fan can be adapted to any installation and location to create the desired air flow. Portable fan may have a smaller nozzle, for example with a diameter of 5 cm, This means that to create an air flow through the nozzle can be applied to the motor or other is device to move air, such as any type of blower or vacuum device, which can ensure the creation of fan air flow in the room. The motor may be, for example, asynchronous AC motor or brushless direct current motor. Also fans can contain any suitable device for moving air, such as a pump or other means to direct the fluid flow to create an air flow. The motor may include elements such as a diffuser or secondary diffuser located downstream after a motor for partial compensation for loss of static pressure in the motor housing and the air moving through the motor.

It is possible to modify the exit outlet. The output of the outlet openings can be made wider or narrower in a wide range to maximize air flow. The air flow emerging from the outlet openings may passes across the surface, such as the Coanda surface or air flow can be discharged through the discharge outlet and to go forward from the fan without passing through the adjoining surface. The Coanda effect can be achieved using several different surfaces, or maybe the use of a combination of several external or internal structural elements to achieve the necessary trapping air and creating the desired flow. Diffuser section can be formed in many areas and be located on several different areas with different orientation corresponding to the various requirements of fans and various types of characteristics of the fan. The effect of the direction or concentration of flow can be achieved in several different ways, for example, the guide section may have a profiled surface or can be tilted from the center of the nozzle and the X-axis or in the direction of the center nozzle and the x-axis.

Can also be selected from other forms of nozzles. For example, can be used nozzle oval shape, in the form of a single strip or line, in the form of a block. The fan provides access to the Central part of the fan, because there are no blades. This means that in the hole, a restricted nozzle, it is possible to install additional elements such as a light bulb, a watch or a liquid crystal display.

In addition, for ease of moving and adjusting the position of the nozzle user base can be made to rotate or tilt.

1. Safe fan to create an air stream containing means for creating an air flow and a nozzle having an inner channel for receiving the air flow and an outlet for release of air flow, and the nozzle location is proposed around the axis and limits the hole, through which opening of the outlet air flow has the capability of pulling in air from outside the fan, and the nozzle includes a surface on which is located an outlet for air flow direction and which contains a diffuser section, receding from the axis, and a guide section located downstream after the diffuser section at an angle to the latter.

2. The fan according to claim 1, in which the angle between the diffuser portion and the axis is in the range of 7-20, and preferably approximately 15.

3. The fan according to any one of claims 1 or 2, wherein the guide section is located around an axis essentially in the form of a cylinder.

4. The fan according to any one of claims 1 or 2, in which the nozzle continues in the axial direction on at least 50 mm

5. The fan according to any one of claims 1 or 2, in which the nozzle continues around the axis at a distance in the range of 300-1800 mm

6. The fan according to any one of claims 1 or 2, wherein the guide section is located symmetrically around the axis.

7. The fan according to any one of claims 1 or 2, in which the guide section continues in the axial direction at a distance in the range of 5-60 mm, preferably at a distance of about 20 mm

8. The fan according to any one of claims 1 or 2, wherein the nozzle is a loop.

9. The fan according to any one of claims 1 or 2, which is oplo is essentially, the ring.

10. The fan according to any one of claims 1 or 2, in which the nozzle is at least partially circular.

11. The fan according to any one of claims 1 or 2, wherein the nozzle includes at least one wall that defines an internal channel and an outlet and containing opposite surface defining the outlet.

12. The fan according to claim 11, in which at least one wall includes an inner wall and outer wall, while the outlet is defined between the two opposite surfaces of the inner wall and outer wall.

13. The fan according to claim 11, in which the outlet has an outlet, and the distance between the opposing surfaces of the exit outlet is in the range of 0.5-5 mm

14. The fan according to any one of claims 1 or 2 in which the means for creating air flow through the nozzle contains an impeller driven by an electric motor.

15. The fan 14, in which the electric motor is a brushless direct current motor, and the impeller is diagonal.

16. Nozzle safe fan for creating an air stream having an inner channel for receiving the air flow and an outlet for release of air flow, and the nozzle is located around the axis and limits the hole, h is the cut that is coming out of the outlet air flow has the capability of pulling in air from outside the fan, when this nozzle contains a surface on which is located an outlet for air flow direction and which contains a diffuser section, receding from the axis, and a guide section located downstream after the diffuser section at an angle to the latter.

17. The nozzle according to clause 16, in which the angle between the diffuser portion and the axis is in the range of 7-20, and preferably approximately 15.

18. The nozzle according to any one of p or 17, in which the guide section is located around an axis essentially in the form of a cylinder.

19. The nozzle according to any one of p or 17, in which the nozzle continues in the axial direction on at least 50 mm

20. The nozzle according to any one of p or 17, in which the nozzle continues around the axis at a distance in the range of 300-1800 mm

21. The nozzle according to any one of p or 17, in which the guide section is located symmetrically around the axis.

22. The nozzle according to any one of p or 17, in which the guide section continues in the axial direction at a distance in the range of 5-60 mm, and preferably about 20 mm

23. The nozzle according to any one of p or 17 having the form of a loop.

24. The nozzle according to any one of p or 17 having the form of a ring nozzle.

25. The nozzle according to any one of p or 17, having at least a partially circular shape.

26. The nozzle according to any one of p or 17 containing at least one wall defined the expansion of the inner channel and an outlet and containing opposite surface, defining the outlet.

27. The nozzle on p, in which at least one wall includes an inner wall and outer wall, while the outlet is defined between the two opposite surfaces of the inner wall and outer wall.

28. The nozzle on p, in which the outlet has an outlet, and the distance between the opposing surfaces of the exit outlet is in the range of 0.5-5 mm



 

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Fan // 2458254

FIELD: ventilation.

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

EFFECT: fan has compact design.

25 cl, 5 dwg

Compression unit // 2455530

FIELD: machine building.

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

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

7 cl, 1 dwg

FIELD: electric engineering.

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

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

21 cl, 9 dwg

Fan unit // 2355916

FIELD: ventilation.

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

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

1 dwg

FIELD: non-positive-displacement pumps.

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

EFFECT: enhanced reliability.

FIELD: in-flow ventilating systems.

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

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

17 cl, 13 dwg

FIELD: natural gas transportation mains.

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

EFFECT: increased efficiency as compared with known systems.

7 cl

FIELD: natural gas transportation mains.

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

EFFECT: increased efficiency as compared with known systems.

7 cl

FIELD: in-flow ventilating systems.

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

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

17 cl, 13 dwg

FIELD: non-positive-displacement pumps.

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

EFFECT: enhanced reliability.

Fan unit // 2355916

FIELD: ventilation.

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

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

1 dwg

FIELD: electric engineering.

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

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

21 cl, 9 dwg

Compression unit // 2455530

FIELD: machine building.

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

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

7 cl, 1 dwg

Fan // 2458254

FIELD: ventilation.

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

EFFECT: fan has compact design.

25 cl, 5 dwg

Fan // 2458255

FIELD: ventilation.

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

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

18 cl, 5 dwg

Blower assembly // 2460904

FIELD: engines and pumps.

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

EFFECT: reduced air loss and noise, increased airflow.

19 cl, 17 dwg

FIELD: machine building.

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

EFFECT: decreased overall dimensions.

2 cl, 2 dwg

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