CN219327678U

CN219327678U - Fan noise reduction assembly, noise reduction fan and power supply

Info

Publication number: CN219327678U
Application number: CN202223299292.2U
Authority: CN
Inventors: 张晓杰; 吴沧海; 赵樱
Original assignee: Huawei Digital Power Technologies Co Ltd
Current assignee: Huawei Digital Power Technologies Co Ltd
Priority date: 2022-12-08
Filing date: 2022-12-08
Publication date: 2023-07-11
Anticipated expiration: 2032-12-08

Abstract

Fan noise reduction subassembly, noise reduction fan and power, fan noise reduction subassembly sets up in power module's inside, includes: the support sets up at the fan air inlet end for fixed fan, wherein: the support is provided with ventilation structure corresponding to the air inlet end of the fan for reducing wind resistance at the air inlet end of the fan. The fan that provides among the embodiment of this application falls the subassembly of making an uproar, set up ventilation structure at the air inlet end that corresponds the fan, reduced the windage, the air current is difficult for producing aerodynamic noise when passing the ventilation net by the air inlet end entering of fan. The embodiment of the application provides a fan subassembly of making an uproar falls, occupation space is little, and pneumatic noise is low, very big promotion user experience to can use in some places that have more strict requirements to the noise.

Description

Fan noise reduction assembly, noise reduction fan and power supply

Technical Field

The application relates to the technical field of power supplies, in particular to a fan noise reduction assembly, a noise reduction fan and a power supply.

Background

In the field of power supply technology, in order to achieve higher power supply density, power supply modules are being developed toward miniaturization, higher density, and integration. As shown in fig. 1, for the power module with a fan, miniaturization means that the internal devices are more dense and the internal space is more intense. The space inside the high-density power supply is extremely utilized through a fine design. However, with miniaturization and densification, the wind resistance in the power module increases sharply, and the heat accumulation in the power module becomes more obvious, so that in order to maintain the power output of the power supply, a fan with a higher rotating speed is required to radiate the power module, the pneumatic noise of the power supply is directly increased by increasing the rotating speed of the fan, the user experience is affected by the noise caused by the power supply operation, and the market competitiveness of the power supply product is also affected. Especially, the power supply equipment installed in the corridor, dormitory and office has more strict requirements on noise.

Disclosure of Invention

In order to solve the above-mentioned problem, provide a fan and fall subassembly of making an uproar, fall fan and power of making an uproar in the embodiment of this application, fan fall the subassembly of making an uproar and set up in power module's inside, be provided with the ventilation net on the fixed bolster of fan, the ventilation net sets up the air inlet end at the fan, because the windage of ventilation net is very little, the air current is difficult for producing aerodynamic noise when passing the ventilation net by the air inlet end entering of fan. The embodiment of the application provides a fan subassembly of making an uproar falls, occupation space is little, and pneumatic noise is low, very big promotion user experience to can use in some places that have more strict requirements to the noise.

For this reason, the following technical solutions are adopted in the embodiments of the present application:

in a first aspect, an embodiment of the present application provides a fan noise reduction assembly, disposed inside a power module, including: the support sets up at the fan air inlet end for fixed fan, wherein: the support is provided with ventilation structure corresponding to the air inlet end of the fan for reducing wind resistance at the air inlet end of the fan.

The support of fixed fan is provided with the ventilation structure, when the fan is running, air flow enters the fan through the ventilation structure, wind resistance in the air flow channel is small, resistance received by the air flow when the air flow flows through the ventilation structure is small, and generated pneumatic noise is low.

In one possible implementation, the ventilation structure is a mesh-like ventilation net.

The air flow enters the fan through the ventilation net, the wind resistance in the air flow channel is small, and the generated pneumatic noise is low.

In one possible implementation, the ventilation mesh completely covers the air intake end.

The ventilation net completely covers the air inlet end, so that the air flow entering the fan is smoother, the wind resistance of the air flow entering the fan through the ventilation net is lower, and the reduction of pneumatic noise is facilitated.

In one possible implementation, the area of the ventilation screen is greater than or equal to the area of the air intake end.

The area of the ventilation net is larger than that of the air inlet end, so that the air flow entering the fan can be maximized, the wind resistance suffered by the air flow entering the fan through the ventilation net is lower, and the pneumatic noise is not easy to generate.

In one possible implementation, the ventilation network comprises: the ventilation holes are uniformly distributed on the ventilation net.

The ventilation net adopts a plurality of ventilation holes to make up, has guaranteed the structural strength of ventilation net, and in addition, a plurality of ventilation holes evenly arrange on the ventilation net can make the air current that gets into the fan steady to the resistance that the air current that flows through each ventilation hole received is little, and the pneumatic noise that produces is low.

In one possible implementation, the vent holes are circular holes.

The ventilation net is provided with the circular ventilation holes, dust is not easy to accumulate in the ventilation holes, and air flow flowing through the ventilation net is smooth, so that the air flow channel keeps low wind resistance, and pneumatic noise is low.

In one possible implementation, the ventilation screen is detachably connected to the support.

After long-time use, the ventilation net is likely to be attached with dust, and the area of the airflow channel can be gradually reduced under the condition that the attached dust is more accumulated, so that the wind resistance is increased, and the ventilation net can be replaced or detached for cleaning by adopting a detachable ventilation net mode, so that the wind resistance in the airflow channel is not increased.

In one possible implementation, the ventilation structure is made integrally with the support. The ventilation structure and the bracket are integrally formed, so that the integral strength of the bracket can be improved, and the manufacturing process steps are saved.

In one possible implementation, the thickness of the ventilation structure is less than or equal to the thickness of the support. The thickness of the ventilation structure is smaller than or equal to that of the support, so that the travel of the airflow channel is shorter, the wind resistance is low, and the noise is smaller.

In one possible implementation, the bracket includes a bent portion that is attached to an outer surface of the fan for fixing the fan.

The bending part attached to the outer surface of the fan is arranged on the support, the fan is fixed, the bending part and one surface of the support form an L-shaped combined surface, two surfaces of the combined surface can be attached to the fan, and the combined surface can fixedly support the fan, so that the fan is more stable in the running process.

In one possible implementation, the bending portion is integrally formed with the bracket. The bending part and the bracket are manufactured by adopting integrated molding, so that the structural strength is higher, and the manufacturing process steps are saved.

In one possible implementation, the bending portion is provided with a fixing hole for fixing the fan. It can be understood that the position size of the fixing hole is matched with that of the fan, so that the fan can be conveniently fixed.

In one possible implementation, the bracket includes: the mounting panel is provided with a plurality of mounting holes on the mounting panel for fixed fan.

The plurality of mounting holes can correspond to the fan, the positions of the plurality of mounting holes can be arranged on different surfaces of the bracket, and the fan can be fixed in a detachable connection mode such as bolt connection.

In one possible implementation, the bracket is detachably connected to the fan. The support is detachably connected with the fan, so that the maintenance and the replacement are convenient.

In a second aspect, an embodiment of the present application provides a noise reduction fan, including a fan body and a fan noise reduction assembly as described above, where noise is low when the fan is running.

In a third aspect, embodiments of the present application provide a power supply including a noise reduction fan as described above. The noise is small, the method can be used in specific use scenes, and the user experience is good.

Drawings

FIG. 1 is a schematic view of the internal structure of a miniaturized high-density power supply module;

fig. 2 is a schematic structural diagram of a fan noise reduction assembly according to an embodiment of the present disclosure;

FIG. 3 is a schematic diagram of an assembly structure of a fan noise reduction assembly according to an embodiment of the present disclosure;

FIG. 4 is a schematic diagram of an assembly structure of a noise reduction assembly of another fan according to an embodiment of the present disclosure;

fig. 5 is a schematic structural diagram of another fan noise reduction assembly according to an embodiment of the present application.

Detailed Description

The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application.

In the description of the present application, the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate an orientation or positional relationship based on that shown in the drawings, merely for convenience of description and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present application.

In the description of the present application, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or an contradictory or integral connection; the specific meaning of the terms in this application will be understood by those of ordinary skill in the art in a specific context.

In the description of the present specification, a particular feature, structure, material, or characteristic may be combined in any suitable manner in one or more embodiments or examples.

For the power module with the fan, the miniaturization of the power module means that the internal devices are more dense and the internal space is more tense. The space inside the high-density power supply is extremely utilized through a fine design. However, with miniaturization and densification, the wind resistance in the power module increases rapidly, and the heat accumulation in the power module becomes more obvious, so that in order to maintain the power output of the power supply, a fan with a higher rotation speed is required to radiate heat of the power module, and the improvement of the rotation speed of the fan directly leads to the further increase of the pneumatic noise of the power supply, thereby affecting the user experience.

Accordingly, the present application proposes a fan noise reduction assembly, disposed inside a power module, as shown in fig. 2-5, comprising: support 1 sets up at fan 2 air inlet 3, and support 1 can be dismantled with fan 2 and be connected for fixed fan 2, wherein: the support 1 is provided with ventilation structure corresponding to the air inlet end 3 of the fan 2, and the ventilation structure can comprise a ventilation net 4, and the ventilation net 4 is arranged at the air inlet end 3 and used for reducing wind resistance at the air inlet end 3 of the fan 2. In one example, the ventilation screen 4 may completely cover the air intake end 3. The ventilation net 4 completely covers the air inlet end 3, so that air flow entering the fan 2 is smoother, and air flow entering the fan 2 through the ventilation net 4 is lower in wind resistance, and aerodynamic noise is reduced.

In one possible embodiment, the thickness of the ventilation structure is less than or equal to the thickness of the support. The thickness of the ventilation structure is smaller than or equal to that of the support, so that the travel of the airflow channel is shorter, the wind resistance is low, and the noise is smaller.

In one possible embodiment, the ventilation structure is integrally formed with the support. The ventilation structure and the bracket are integrally formed, so that the integral strength of the bracket can be improved, and the manufacturing process steps are saved.

In a further alternative embodiment, the area of the ventilation screen 4 may be larger than the area of the air inlet end 3. The area of the ventilation net 4 is larger than that of the air inlet end 3, so that the air flow entering the fan 2 can be maximized, the wind resistance of the air flow entering the fan 2 through the ventilation net 4 is lower, and the pneumatic noise is not easy to generate.

Compared with the prior art, the embodiment of the application sets up ventilation net 4 on the support of fixed fan 2, and when fan 2 was operated, the air current was passed through ventilation net 4 and is got into fan 2, and the windage in the air current passageway is less, and the resistance that receives when the air current flowed through ventilation net 4 is little, and the pneumatic noise that produces is low.

In one possible embodiment, the ventilation wire 4 may comprise a plurality of ventilation holes 5, the plurality of ventilation holes 5 being evenly distributed over the ventilation wire 4. The ventilation holes 5 may be circular holes, square holes, diamond holes, etc., and only the ventilation net 4 is required to be ensured to be smooth, and the ventilation net is not particularly limited. The ventilation net 4 is provided with the circular ventilation holes 5, dust is not easy to accumulate in the ventilation holes 5, and air flow flowing through the ventilation net 4 is smooth, so that the air flow channel keeps low wind resistance and low pneumatic noise.

The ventilation net 4 can be integrally formed with the bracket 1, or can be assembled together after being manufactured respectively and connected in a detachable connection mode. In the mode that ventilation net 4 adopts detachable connection with support 1, ventilation net 4 is at long-time use back, probably attached dust, and under the more the dust that is attached, can reduce the area of air current passageway gradually, makes the windage increase, adopts detachable ventilation net 4 mode can change ventilation net 4, perhaps pull down the washing to guarantee that the windage in the air current passageway does not increase.

In another possible embodiment, the ventilation screen 4 may be provided on the outer surface of the support 1, and correspondingly, an air flow through hole is provided on the contact surface of the support 1 and the ventilation screen 4, so that air flow enters from the ventilation screen 4 and passes through the support 1 into the fan 2.

Compared with the prior art, the embodiment of the application has the advantages that the ventilation net 4 is formed by combining the plurality of ventilation holes 5, so that the structural strength of the ventilation net 4 is guaranteed, in addition, the plurality of ventilation holes 5 are uniformly arranged on the ventilation net 4, the air flow entering the fan 2 is stable, the resistance to the air flow flowing through each ventilation hole 5 is small, and the generated pneumatic noise is low.

In a possible embodiment, the bracket 1 may further include a bending portion 6, where the bending portion 6 is fitted to an outer surface of the fan 2, for fixing the fan 2. The bending part 6 and the bracket 1 can be integrally formed and can also be assembled in a detachable connection mode. The bending part 6 and the bracket 1 are manufactured by adopting integrated molding, so that the structural strength is higher, and the manufacturing process steps are saved.

The bending part 6 attached to the outer surface of the fan 2 is arranged on the support 1, the fan 2 is fixed, the bending part 6 and one surface of the support 1 form an L-shaped combined surface, two surfaces of the combined surface can be attached to the fan 2, and the combined surface can fixedly support the fan 2, so that the fan 2 is more stable in the running process.

In another possible embodiment, the number of folds 6 may be plural, one or more folds 6 may be used to secure the fan 2, and one or more folds 6 may also be used to secure the fan 2 to the housing of the power module. It will be appreciated that some of the folds 6 are used to secure the fan 2 and some of the folds 6 are used to secure the fan 2 to the power module.

In one possible embodiment, the bent portion 6 may be provided with a fixing hole 7 for fixing the fan 2. It can be understood that the position and the size of the fixing hole 7 are matched with those of the fan 2, so that the fan 2 can be conveniently fixed. It should be noted that the number of the fixing holes 7 may be one or more, depending on the number of the fixing holes 7 provided on the fan 2, and accordingly, the positions of the fixing holes 7 are matched with the fan 2.

In another possible embodiment, the bracket 1 comprises: a plurality of mounting holes 8 for connecting the bracket 1 with the fan 2.

The plurality of mounting holes 8 can correspond to the fan 2, the positions of the plurality of mounting holes 8 can be arranged on different surfaces of the bracket 1, and the fan 2 can be fixed in a detachable connection mode such as bolt connection.

The fan that provides in the embodiment of this application falls the subassembly setting of making an uproar in power module's inside, is provided with ventilation net 4 on the fixed bolster of fan 2, and ventilation net 4 sets up at the air inlet end 3 of fan 2, because ventilation net 4 windage is very little, the air current is difficult for producing pneumatic noise when passing ventilation net 4 by the air inlet end 3 entering of fan 2. The embodiment of the application provides a fan 2 subassembly that makes an uproar that falls occupation space is little, and pneumatic noise is low, very big promotion user experience to can use in some places that have more strict requirements to the noise.

The embodiment of the application also provides a noise reduction fan, which comprises a fan body and the fan noise reduction assembly, wherein the noise is low when the fan is running.

The embodiment of the application also provides a power supply, which comprises the noise reduction fan. The noise is small, the method can be used in specific use scenes, and the user experience is good.

The fan noise reduction assembly, the noise reduction fan, the position relation, the number, the shape and the structure of the overlooking section of each part in the power supply and the like provided by the embodiment of the application are not limited to the embodiment, and all the technical schemes realized under the principle of the application are within the protection scope of the scheme. Any one or more embodiments or illustrations in the specification, combined in a suitable manner, are within the scope of the present disclosure.

The foregoing is merely a preferred embodiment of the present application, but the scope of the present application is not limited thereto, and any changes or substitutions easily contemplated by those skilled in the art within the technical scope of the present application should be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A fan noise reduction assembly disposed within a power module, comprising:

the support sets up at the fan air inlet end, is used for fixing the fan, wherein:

the support is provided with a ventilation structure corresponding to the air inlet end part of the fan and is used for reducing the wind resistance at the air inlet end part of the fan.

2. The fan noise reduction assembly of claim 1, wherein the ventilation structure is a mesh-like ventilation screen.

3. The fan noise reduction assembly of claim 2, wherein the ventilation screen completely covers the air intake end.

4. The fan noise reduction assembly of claim 2, wherein the area of the ventilation screen is greater than or equal to the area of the air intake end.

5. The fan noise reduction assembly of claim 2, wherein the ventilation screen comprises:

and the ventilation holes are uniformly distributed on the ventilation net.

6. The fan noise reduction assembly of claim 1, wherein the ventilation structure is removably connected to the bracket.

7. The fan noise reduction assembly of claim 1, wherein the ventilation structure is integrally formed with the bracket.

8. The fan noise reduction assembly of claim 1, wherein the thickness of the ventilation structure is less than or equal to the thickness of the bracket.

9. The fan noise reduction assembly of claim 1, wherein the bracket includes a bend that conforms to an outer surface of a fan for securing the fan.

10. The fan noise reduction assembly of claim 9, wherein the bent portion is provided with a fixing hole for fixing the fan.

11. The fan noise reduction assembly of claim 1, wherein the bracket comprises:

the mounting plate is provided with a plurality of mounting holes for fixing the fan.

12. The fan noise reduction assembly of claim 1, wherein the bracket is removably connected to the fan.

13. A noise reduction fan comprising a fan body and a fan noise reduction assembly as claimed in any one of claims 1 to 12.

14. A power supply comprising the noise reduction fan of claim 13.