CN220059952U - Centrifugal fan and air cooling unit - Google Patents

Abstract

The utility model provides a centrifugal fan and an air cooling unit. The centrifugal fan comprises a shell and a fan, wherein the shell comprises an installation shell and an air guide shell assembled to the installation shell, the installation shell encloses a first ventilation space, the air guide shell encloses a second ventilation space, and the fan is assembled into the first ventilation space. The casing is provided with air intake, intercommunication wind gap and air outlet, and the air intake sets up in the installation casing, and intercommunication wind gap intercommunication first ventilation space and second ventilation space, and the air outlet is located the top of casing. The air guide shell comprises an air guide plate extending from the communicated air opening to the air outlet, and the air guide plate comprises an arc-shaped structure. The arc-shaped structure changes the exhaust direction, can guide the air, reduces the energy loss when the air flow collides with the shell, thereby reducing the pressure drop and improving the exhaust efficiency. Meanwhile, the vibration of the air flow and the shell is reduced, and the working noise is reduced.

Description

Centrifugal fan and air cooling unit

Technical Field

The utility model relates to the technical field of cooling, in particular to a centrifugal fan and an air cooling unit.

Background

The centrifugal fan is a device for improving the pressure of gas and discharging the gas by means of input mechanical energy, and is widely applied to the fields of cooling, ventilation and the like. At present, the air cooling unit is cooled by using a centrifugal fan. On the one hand, the air outlet of the traditional centrifugal fan is larger, and the centrifugal fan has only an air outlet function, has no noise reduction function, and is directly discharged through the air outlet, so that the working noise of the centrifugal fan is larger. On the other hand, the pressure drop generated after the air flow collides with the exhaust box is larger under the influence of the shape of the exhaust box, so that the exhaust air quantity is smaller, and the exhaust efficiency is low.

Accordingly, there is a need for an improved centrifugal fan and air cooling unit that addresses the above-described problems.

Disclosure of Invention

The utility model provides a centrifugal fan and an air cooling unit, which are used for reducing working noise of the centrifugal fan and the air cooling unit and improving exhaust efficiency.

The utility model provides a centrifugal fan, which comprises a shell and a fan, wherein the shell comprises a mounting shell and an air guide shell assembled to the mounting shell, the mounting shell encloses a first ventilation space, the air guide shell encloses a second ventilation space, and the fan is assembled into the first ventilation space; the shell is provided with an air inlet, a communication air inlet and an air outlet, the air inlet is arranged on the installation shell, the communication air inlet is communicated with the first ventilation space and the second ventilation space, and the air outlet is positioned at the top of the shell; the air guide shell comprises an air guide plate extending from the communication air port to the air outlet, and the air guide plate comprises an arc-shaped structure.

Further, the air outlet comprises a first air outlet and a second air outlet, the first air outlet is communicated with the outer portion of the shell and the first ventilation space, and the second air outlet is communicated with the outer portion of the shell and the second ventilation space.

Further, the projection of the first air outlet in the height direction is partially overlapped with the fan.

Further, the length of the communicating tuyere in the height direction is longer than the length of the fan in the height direction.

Further, the installation shell is rectangular, and comprises a top wall, a bottom wall, a first side wall, a second side wall and a third side wall, wherein the first side wall, the second side wall and the third side wall are connected with the top wall and the bottom wall, the first side wall and the second side wall are oppositely arranged, and the air inlet is formed in the first side wall.

Further, a first soundproof cotton is arranged on the shell, and the first soundproof cotton is arranged on one side of the installation shell, which is away from the first ventilation space; the first soundproof cotton is located on at least any one of the top wall, the bottom wall, the second side wall, and the third side wall.

Further, a second soundproof cotton is arranged on the shell, and the second soundproof cotton is arranged on one side, away from the second ventilation space, of the air guide shell.

Further, the second soundproof cotton is provided with the fixed plate in deviating from one side of wind-guiding casing, the fixed plate includes main part and is located the casing connecting portion at main part both ends, be provided with the accepting groove on the second soundproof cotton, the casing connecting portion pass the accepting groove is connected to the wind-guiding casing, main part supports to press to the second soundproof cotton.

Further, a fixed frame is assembled at the top of the air guide shell, and a plurality of air cooler unit connecting positions are arranged on the fixed frame.

The utility model also provides an air cooling unit which comprises the centrifugal fan.

The centrifugal fan comprises a mounting shell and an air guide shell. The air guide shell comprises an air guide plate, and an arc-shaped structure is arranged on the air guide plate. The arc structure can guide the air, change the exhaust direction, the air current that the fan drove is discharged from the air outlet along the direction of arc structure, has reduced the energy loss when air current and casing collide, has reduced the pressure drop, has increased the exhaust volume, has improved exhaust efficiency. Meanwhile, the vibration of the air flow and the shell is reduced, so that the centrifugal fan has lower working noise.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the specification and together with the description, serve to explain the principles of the specification.

FIG. 1 is a schematic diagram of an exploded perspective view of an air cooler assembly according to an exemplary embodiment of the present utility model;

FIG. 2 is a cross-sectional view of a centrifugal fan in an exemplary embodiment of the utility model;

FIG. 3 is an enlarged view of a portion of FIG. 2 at A;

FIG. 4 is a partial enlarged view at B in FIG. 2;

fig. 5 is a partial enlarged view at C in fig. 1.

Reference numerals illustrate: a housing 10; an air inlet 101; a communicating tuyere 102; an air outlet 103; a first outlet 1031; a second outlet port 1032; a mounting shell 11; a first ventilation space 110; a top wall 111; a bottom wall 112; a first sidewall 113; a second sidewall 114; a third sidewall 115; an air guiding housing 12; a second ventilation space 120; a side plate 121; an air deflector 122; an arcuate structure, 1221; linear structure 1222; a fan 20; an impeller 21; a diffuser connection plate 22; a housing connection plate 23; reinforcing plates, 24; soundproof cotton, 30; a first soundproof cotton 31; a second soundproof cotton 32; a receiving groove 321; a fixing plate 40; a main body 41; a housing connecting portion 42; a fixed frame 50; the air cooling unit is connected with the position 51; a diffuser, 60; a cooler, 70; a soft pad 80; a support member 90; a support bracket 91; support plates, 92.

Detailed Description

Reference will now be made in detail to exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numbers in different drawings refer to the same or similar elements, unless otherwise indicated. The implementations described in the following exemplary examples do not represent all implementations consistent with the present specification. Rather, they are merely examples of apparatus and methods consistent with some aspects of the present description as detailed in the accompanying claims.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. Unless defined otherwise, technical or scientific terms used in this specification should be given the ordinary meaning as understood by one of ordinary skill in the art to which this utility model belongs. The terms "first," "second," and the like in the description and in the claims, are not used for any order, quantity, or importance, but are used for distinguishing between different elements. Likewise, the terms "a" or "an" and the like do not denote a limitation of quantity, but rather denote the presence of an entity. "plurality" or "plurality" means two or more. Unless otherwise indicated, the terms "front," "rear," "lower," and/or "upper" and the like are merely for convenience of description and are not limited to one location or one spatial orientation. The word "comprising" or "comprises", and the like, means that elements or items appearing before "comprising" or "comprising" are encompassed by the element or item recited after "comprising" or "comprising" and equivalents thereof, and that other elements or items are not excluded. The terms "connected" or "connected," and the like, are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect.

The terminology used in the description presented herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. As used in this specification and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any or all possible combinations of one or more of the associated listed items.

Next, embodiments of the present specification will be described in detail.

As shown in fig. 1 and 2, the centrifugal fan of the present utility model includes a housing 10 and a fan 20. The housing 10 includes a mounting housing 11 and an air guiding housing 12 assembled to the mounting housing 11. The installation housing 11 encloses a first ventilation space 110 and the air guiding housing 12 encloses a second ventilation space 120. The fan 20 is assembled into the first ventilation space 110. The housing 10 is provided with an air inlet 101, a communication air outlet 102 and an air outlet 103. The air intake port 101 is provided in the installation housing 11. The communication tuyere 102 communicates the first ventilation space 110 with the second ventilation space 120. The air outlet 103 is located at the top of the housing 10. The air guiding housing 12 includes an air guiding plate 122 extending from the communication air outlet 102 to the air outlet 103. The air deflection 122 includes an arcuate configuration 1221.

The fan 20 is driven by a motor. In operation, air flow from the fan 20 is transferred from the first plenum 110 to the second plenum 120 and is exhausted from the air outlet 103 along the direction of the arcuate structure 1221. The arc-shaped structure 1221 can guide the air, change the air exhaust direction, reduce the energy loss when the air flow shell 10 collides, thereby reducing the pressure drop of the air, increasing the air exhaust quantity and improving the air exhaust efficiency. At the same time, the vibration of the air flow and the housing 10 is reduced, and the working noise is reduced.

As shown in fig. 1 to 3, the mounting housing 11 may have a rectangular shape, for example, a square or rectangle, or may have a circular or irregular shape. In this embodiment, the mounting housing 11 is composed of a plurality of thin plate members, and includes a top wall 111, a bottom wall 112, and a first side wall 113, a second side wall 114, and a third side wall 115 connecting the top wall 111 and the bottom wall 112. The first side wall 113 is disposed opposite to the second side wall 114. The third sidewall 115 connects the first sidewall 113 and the second sidewall 114. The rectangular installation housing 11 is convenient to manufacture, and the first ventilation space 110 can have a larger volume, and the fan 20 can drive more airflow, so that the air output of the centrifugal fan is improved.

The top wall 111, the bottom wall 112, the first side wall 113, the second side wall 114 and the third side wall 115 enclose a first ventilation space 110. The air inlet 101 is disposed on the first side wall 113. The communicating tuyere 102 is provided opposite to the third side wall 115. Under the rotation of the fan 20, the air flow passes through the air inlet 101 along the axial direction of the fan 20. After passing through the fan 20, the air flow passes through the communicating tuyere 102 in the radial direction.

The length of the communicating tuyere 102 in the height direction is longer than the length of the fan 20 in the height direction. I.e. as shown in fig. 2, the length of D1 is greater than the length of D2. This arrangement increases the area of the communicating air port 102, increases the ventilation amount of the communicating air port 102, and improves the exhaust efficiency.

As shown in fig. 2, the air outlet 103 includes a first air outlet 1031 and a second air outlet 1032. The first outlet 1031 communicates the outside of the housing 10 with the first ventilation space 110. The second air outlet 1032 communicates the outside of the casing 10 with the second ventilation space 120. The first outlet 1031 is located at the top of the installation housing 11. The second air outlet 1032 is located at the top of the air guiding housing 12. The first air outlet 1031 extends from the second air outlet 1032, thereby increasing the area of the air outlet 103, and reducing the length of the casing 10 and the space occupied by the centrifugal fan while enlarging the air output.

In other embodiments, the top of the installation housing 11 may be closed, and the air outlet 103 is only provided at the top of the air guiding housing 12. To ensure the air output, the distance of the air guiding housing 12 along the length direction of the housing 10 can be increased under the condition that the installation space conditions allow.

The projection of the first outlet 1031 in the height direction partially overlaps the fan 20. From the perspective perpendicular to the first air outlet 1031, the first air outlet 1031 is partially overlapped with the fan 20, increasing the area of the first air outlet 1031 and increasing the amount of exhaust air.

Meanwhile, the first air outlet 1031 does not completely cover the top of the installation housing 11, keeps the top wall 111 blocking noise, and balances the air discharging efficiency and the working noise. In other embodiments, if the requirement for the working noise is low, the top of the installation housing 11 may be open, and the top wall 111 is not provided, and the first air outlet 1031 extends from one side to the other side of the top of the installation housing 11, so as to increase the air exhaust volume.

As shown in fig. 2 and 4, the air guiding housing 12 is composed of a plate member including a pair of side plates 121 disposed opposite to each other and an air guiding plate 122 connecting the pair of side plates 121. The air deflector 122 includes an arc-shaped structure 1221, and in this embodiment, the arc-shaped structure 1221 extends upward from the bottom of the communicating air port 102. The end of the arcuate structure 1221 is connected to a straight line structure 1222. When entering the second ventilation space 120, the air first contacts the arc-shaped structure 1221 to be guided, and then is discharged out of the housing 10 through the linear structure 1222, so that energy loss on the air flow transmission path can be reduced, and better noise reduction effect and ventilation efficiency can be obtained.

In other embodiments, the arcuate structure 1221 may be disposed at any location of the air deflection 122. For example: the air deflector 122 may extend horizontally from the bottom of the communication tuyere 102 to form a plate member, and an arc-shaped structure 1221 extends upward from the end of the plate member along an arc shape. The straight line structure 1222 may not be provided and the arcuate structure 1221 extends along an arc to be flush with the top of the mounting housing 11.

As shown in fig. 1, the fan 20 includes an impeller 21, a diffuser connection plate 22, a housing connection plate 23, and a reinforcing plate 24. The diffuser connection plate 22 and the housing connection plate 23 are located on both sides of the impeller 21. The reinforcing plate 24 connects the diffuser connection plate 22 with the housing connection plate 23. The reinforcing plates 24 are provided in a pair in number and are disposed above and below the impeller 21, respectively.

As shown in fig. 2, soundproof cotton 30 is provided on the outer wall of the case 10. The soundproof cotton 30 includes a first soundproof cotton 31 and a second soundproof cotton 32. The first soundproof cotton 31 is disposed at a side of the mounting case 11 facing away from the first ventilation space 110. The second soundproof cotton 32 is disposed at a side of the wind guiding housing 12 facing away from the second ventilation space 120.

The first soundproof cotton 31 is located on at least any one of the top wall 111, the bottom wall 112, the second side wall 114, and the third side wall 115. In this embodiment, the top wall 111, the bottom wall 112, the second side wall 114 and the third side wall 115 are all provided with the first soundproof cotton 31. On the premise of not affecting the installation of other parts, the first soundproof cotton 31 is laid to the greatest extent so as to reduce the noise of the centrifugal fan.

The second soundproof cotton 32 is located on at least any one of the pair of side plates 121 and the air deflector 122. In the present embodiment, the pair of side plates 121 and the air guide plate 122 are each provided with the second soundproof cotton 32. The first soundproof cotton 31 and the second soundproof cotton 32 are arranged on the noise transmission path, thereby improving the soundproof effect and reducing the noise.

As shown in fig. 1 and 5, the second soundproof cotton 32 is provided with a fixing plate 40 at a side facing away from the wind guiding housing 12. The fixing plate 40 includes a main body 41 and housing connecting portions 42 at both ends of the main body 41, and the second soundproof cotton 32 is provided with receiving grooves 321. The position of the receiving groove 321 corresponds to the position of the housing connecting portion 42. The housing connecting portion 42 is connected to the air guiding housing 12 through the receiving groove 321, and the main body portion 41 is pressed against the second soundproof cotton 32 to fix the second soundproof cotton 32 to the air guiding housing 12.

In this embodiment, the housing connecting portion 42 is formed of two vertically bent plates, and the fixing plate 40 is connected to the air guiding housing 12 by screws. The fixing plate 40 is horizontal and the number thereof is set to be several. The plurality of fixing plates 40 on the side plate 121 are disposed at intervals in the height direction. The fixing plates 40 on the air guiding housing 12 are arranged at intervals along the extending direction of the air guiding plate 122.

In other embodiments, the specific manner of connection of the housing connection 42 to the air guiding housing 12 is not limited. For example: the housing connecting portion 42 may be in the form of a hook, and a slot is provided on the air guiding housing 12. The number and specific distribution of the fixing plates 40 are not limited. For example: the fixing plate 40 on the side plate 121 may be vertically disposed. The fixing plates 40 on the side plates 121 may be spaced apart along the length direction of the housing 10. The fixing plates 40 on the side plates 121 may be provided obliquely, and the number thereof may be set to only one.

The fixing plate 40 on the wind guiding housing 12 may be provided in a curved form and conform to the curved shape of the wind guiding housing 12. The plurality of fixing plates 40 on the wind guiding housing 12 may be disposed at intervals along the width direction of the housing 10. The number of the fixing plates 40 on the wind guide housing 12 may be set to only one. Glue can be added between the first soundproof cotton 31, the second soundproof cotton 32 and the housing 10 to improve the installation strength.

As shown in fig. 2, the top of the wind guiding housing 12 is assembled with a fixing frame 50. The fixed frame 50 is provided with a plurality of air cooling unit connection positions 51. The centrifugal fan is fixed to the air cooling unit through the air cooling unit connecting position 51, so that vibration of the centrifugal fan can be reduced, and noise is reduced. The air cooling unit connection position 51 is arranged as a hole and is in threaded connection with the air cooling unit. In other embodiments, the connection between the air cooling unit connection location 51 and the air cooling unit is not limited, and may be a clamping connection.

As shown in fig. 1, the present utility model further provides an air cooling unit, which includes the centrifugal fan, the diffuser 60, and the cooler 70. The working noise generated by the centrifugal fan is small, and the exhaust efficiency is high. The whole air cooling unit also has smaller working noise and exhaust efficiency. The heat radiation efficiency of the cooler 70 is improved. Meanwhile, as the soundproof cotton 30 is arranged on the outer wall of the shell 10, noise generated in the air cooling unit is absorbed, the noise is prevented from leaking through the centrifugal fan, and the working noise of the whole air cooling unit is further reduced. The specific type of the air cooling unit is not limited, and the air cooling unit can be a screw air cooling unit and the like.

The compressor and other parts in the air cooling unit generate a great deal of noise. The air cooling unit can effectively prevent noise leakage. On the one hand, since the top of the mounting case 11 is closed and the first soundproof cotton 31 is provided, it is possible to absorb noise and prevent the noise from leaking from the top of the mounting case 11. On the other hand, the second soundproof cotton 32 is provided on the wind guiding housing 12, and noise is also absorbed when passing through the wind guiding housing 12. Through all set up soundproof cotton 30 on the transmission route of noise, noise can be greatly weakened when the transmission, has effectively reduced the inside noise leakage of forced air cooling unit, has reduced the noise of forced air cooling unit complete machine.

The diffuser 60 is assembled to the diffuser connection plate 22 and is disposed between the centrifugal fan and the cooler 70. The diffuser 60 has a larger opening toward the cooler 70 than the centrifugal fan, facilitating gas flow. A soft gasket 80 is provided between the diffuser 60 and the mounting housing 11 to seal. The bottom of the centrifugal fan is provided with a support 90. The support 90 includes a support bracket 91 and a support plate 92. The support bracket 91 is assembled to the bottom of the housing 10 to support the centrifugal fan. The support plate 92 is assembled to the bottom of the diffuser 60, supporting the cooler 70.

The present utility model is not limited to the above-mentioned embodiments, but is not limited to the above-mentioned embodiments, and any person skilled in the art can make some changes or modifications to the above-mentioned embodiments without departing from the scope of the present utility model.

Claims (10)

1. A centrifugal fan, comprising: the fan comprises a shell and a fan, wherein the shell comprises a mounting shell and an air guide shell assembled to the mounting shell, the mounting shell encloses a first ventilation space, the air guide shell encloses a second ventilation space, and the fan is assembled into the first ventilation space; the shell is provided with an air inlet, a communication air inlet and an air outlet, the air inlet is arranged on the installation shell, the communication air inlet is communicated with the first ventilation space and the second ventilation space, and the air outlet is positioned at the top of the shell; the air guide shell comprises an air guide plate extending from the communication air port to the air outlet, and the air guide plate comprises an arc-shaped structure.

2. The centrifugal fan of claim 1, wherein the air outlet comprises a first air outlet and a second air outlet, the first air outlet communicates with the exterior of the housing and the first ventilation space, and the second air outlet communicates with the exterior of the housing and the second ventilation space.

3. The centrifugal fan of claim 2, wherein a projection of the first air outlet in a height direction partially overlaps the fan.

4. The centrifugal fan according to claim 1, wherein a length of the communicating tuyere in a height direction is larger than a length of the fan in the height direction.

5. The centrifugal fan of claim 1, wherein the mounting housing is rectangular and includes a top wall, a bottom wall, and first, second and third side walls connecting the top wall and the bottom wall, the first side wall being disposed opposite the second side wall, the third side wall connecting the first and second side walls, the third side wall being disposed opposite the communicating air inlet, the air inlet being disposed in the first side wall.

6. The centrifugal fan according to claim 5, wherein a first soundproof cotton is arranged on the shell, and the first soundproof cotton is arranged on one side of the installation shell, which is away from the first ventilation space; the first soundproof cotton is located on at least any one of the top wall, the bottom wall, the second side wall, and the third side wall.

7. The centrifugal fan according to claim 1, wherein a second soundproof cotton is arranged on the housing, and the second soundproof cotton is arranged on one side of the air guiding housing, which is away from the second ventilation space.

8. The centrifugal fan according to claim 7, wherein the second soundproof cotton is provided with a fixing plate on a side facing away from the air guiding housing, the fixing plate including a main body portion and housing connecting portions at both ends of the main body portion; the second soundproof cotton is provided with a containing groove, the shell connecting part penetrates through the containing groove to be connected to the air guide shell, and the main body part is propped against the second soundproof cotton.

9. The centrifugal fan according to claim 1, wherein a fixed frame is assembled on the top of the air guiding shell, and a plurality of air cooling unit connection positions are arranged on the fixed frame.

10. An air cooling unit, characterized by comprising: centrifugal fan according to any of claims 1-9.