CN211082344U

CN211082344U - Heat radiation fan and electronic equipment

Info

Publication number: CN211082344U
Application number: CN201922155893.8U
Authority: CN
Inventors: 王瑜评; 刘家俊; 林承纬
Original assignee: Hefei Lianbao Information Technology Co Ltd
Current assignee: Hefei Lianbao Information Technology Co Ltd
Priority date: 2019-12-04
Filing date: 2019-12-04
Publication date: 2020-07-24
Anticipated expiration: 2029-12-04

Abstract

The embodiment of the utility model provides a radiator fan and electronic equipment, this radiator fan includes: the impeller type vibration absorber comprises a shell, wherein the shell comprises a top plate, a bottom plate and side plates, the top plate and the bottom plate are arranged oppositely, the side plates are arranged between the top plate and the bottom plate in an enclosing mode, an inner cavity of the shell is defined by the top plate, the bottom plate and the side plates, an impeller is arranged in the inner cavity, and all or part of at least one of the top plate and the bottom plate is composed of a; the sound absorption board comprises a first board body and a second board body which are oppositely arranged, a plurality of silencing cavities which are arranged at intervals are arranged between the first board body and the second board body, the first board body is close to the inner cavity, and a plurality of through holes communicated with the silencing cavities are formed in the first board body. The utility model discloses radiator fan passes through the sound structure of inhaling that comprises through-hole and amortization chamber on the abatvoix and can the effective absorption noise, can show the noise that reduces radiator fan to need not to shelter from radiator fan's air intake and air outlet, can solve the unable balanced problem of noise and flow.

Description

Heat radiation fan and electronic equipment

Technical Field

The embodiment of the utility model provides a relate to electronic equipment technical field, especially relate to a radiator fan and electronic equipment.

Background

The electronic equipment has the problem of generating heat in the operation process, usually dispels the heat through radiator fan, but radiator fan operation in-process can produce the noise, for the noise that makes radiator fan can accord with the standard, reduces the noise through the mode such as the air intake size of control radiator fan, reduction fan rotational speed, carry out optimal design to the blade shape among the prior art usually.

However, in the method of controlling the size of the air inlet of the cooling fan, the noise of the fan can be optimized only by repeatedly carrying out a plurality of tests in the design process, and a great deal of manpower, cost and time are consumed in the research and development process. And shielding the air inlet can influence the heat dispersion performance of the flow meter of the fan. Reducing the fan speed significantly reduces the air flow, risking affecting system performance. The mode of optimally designing the blade shape needs to pass repeated trial and error verification, the development time is long, and the development cost is high.

SUMMERY OF THE UTILITY MODEL

In view of the above-mentioned problem that exists among the prior art, the embodiment of the utility model provides a radiator fan and applied this radiator fan's electronic equipment that noise is lower, simple structure and easily realize.

In order to solve the above problem, the embodiment of the present invention provides a technical solution:

a heat dissipation fan, comprising: the impeller type vibration damper comprises a shell, wherein the shell comprises a top plate, a bottom plate and a side plate, the top plate and the bottom plate are arranged oppositely, the side plate is arranged between the top plate and the bottom plate in an enclosing mode, an inner cavity of the shell is formed by the top plate, the bottom plate and the side plate in an enclosing mode, an impeller is arranged in the inner cavity, and all or part of at least one of the top plate and the bottom plate is composed of a sound absorption plate;

the sound absorption plate comprises a first plate body and a second plate body which are arranged oppositely, a plurality of silencing cavities which are arranged at intervals are arranged between the first plate body and the second plate body, the first plate body is close to the inner cavity, and a plurality of through holes communicated with the silencing cavities are formed in the first plate body.

In some embodiments, a gap is formed between the first plate body and the second plate body, and a plurality of partition plates arranged at intervals are arranged between the first plate body and the second plate body to divide the gap into a plurality of sound-deadening cavities which are communicated with different through holes.

In some embodiments, the sound-deadening chamber is in a strip shape, and the through holes are arranged along the length direction of the sound-deadening chamber.

In some embodiments, an air inlet is formed in the bottom plate at a position close to the middle of the impeller, an air outlet is formed in the side plate, and at least a portion of the bottom plate close to the air outlet is formed by the sound-absorbing plate.

In some embodiments, a volute air guide channel is formed between the periphery of the impeller and the inner side wall of the shell, and a flared end of the volute air guide channel faces the air outlet.

The embodiment of the utility model provides an electronic equipment is still provided, it includes as above radiator fan.

Compared with the prior art, the utility model discloses beneficial effect lies in:

the utility model discloses radiator fan can the effective absorption noise through the sound structure of inhaling that comprises through-hole and amortization chamber on the abatvoix, can show the noise that reduces radiator fan to need not to shelter from radiator fan's air intake and air outlet, can solve the problem of the unable balance of flow of noise and wind, the electronic equipment who uses this radiator fan has the less advantage of noise equally.

Drawings

Fig. 1 is an exploded schematic view of a heat dissipation fan according to an embodiment of the present invention;

fig. 2 is a schematic perspective view of the sound-absorbing panel according to the embodiment of the present invention;

fig. 3 is a schematic sectional structure view of the sound-absorbing panel according to the embodiment of the present invention;

fig. 4 is a comparison graph of the noise detection results of the cooling fan according to the embodiment of the present invention and the cooling fan without the sound-absorbing board;

fig. 5 is a schematic view of an internal structure of a heat dissipation fan according to an embodiment of the present invention.

Description of reference numerals:

1-a shell; 2-an impeller; 3-a top plate; 4-a bottom plate; 5-side plate; 6-inner cavity; 7-a sound-absorbing panel; 8-a first plate body; 9-a second plate body; 10-a sound-deadening chamber; 11-a through hole; 12-a separator; 13-air outlet; 14-a volute air guide channel.

Detailed Description

For better understanding of the technical solutions of the embodiments of the present invention, the present invention will be described in detail with reference to the accompanying drawings and the detailed description.

Fig. 1 is the perspective structure diagram of the cooling fan of the embodiment of the present invention, as shown in fig. 1, the cooling fan of the embodiment of the present invention includes: the impeller comprises a shell 1 and an impeller 2, wherein the shell 1 comprises a top plate 3 and a bottom plate 4 which are oppositely arranged, and a side plate 5 which is enclosed between the top plate 3 and the bottom plate 4, the top plate 3, the bottom plate 4 and the side plate 5 enclose an inner cavity 6 of the shell 1, the impeller 2 is arranged in the inner cavity 6, and all or part of at least one of the top plate 3 and the bottom plate 4 is composed of a sound-absorbing plate 7; the sound-absorbing board 7 comprises a first board body 8 and a second board body 9 which are oppositely arranged, a plurality of silencing cavities 10 which are arranged at intervals are arranged between the first board body 8 and the second board body 9, the first board body 8 is close to the inner cavity 6, and a plurality of through holes 11 communicated with the silencing cavities 10 are formed in the first board body 8, as shown in fig. 2 and 3.

With the heat dissipating fan of the above-described structure, at least a part of the structure of the top plate 3 and/or the bottom plate 4 is formed by the sound-absorbing plate 7, so that the casing 1 has sound-absorbing capability, the sound-absorbing plate 7 has a microstructure formed by the through holes 11 and the sound-absorbing cavities 10, so as to absorb noise, and the sound-absorbing coefficient of the sound-absorbing plate 7 can reach about 0.5-0.8, preferably close to 0.9. As shown in fig. 4, at different rotation speeds of the radiator fan, the noise generated by the radiator fan is significantly reduced compared to the radiator fan of the same structure without the sound-absorbing plate 7. And need not to shelter from radiator fan's air intake and air outlet 13, can solve the problem that noise and flow can't be balanced. Although fig. 1 shows that only a part of the casing 1 is constituted by the sound-absorbing plate 7, the top plate 3 and the bottom plate 4 may be constituted by the sound-absorbing plate 7.

As shown in fig. 2 and 3, in some embodiments, the first plate body 8 and the second plate body 9 have a gap therebetween, the first plate body 8 and the second plate body 9 have a plurality of partition plates 12 arranged at intervals therebetween, so that the gap is divided into a plurality of gaps communicated with the through holes 11, the silencing cavities 10 formed in this way are sequentially arranged and communicated with different through holes 11, so that sound waves can enter each silencing cavity 10 through the through holes 11, and the sound absorption performance of the sound absorption plate 7 is improved. For example, the first plate 8 and the second plate 9 may be disposed parallel to each other, and the partition plates 12 may be disposed along a direction perpendicular to the first plate 8 and the second plate 9, so that a plurality of rectangular parallelepiped cavities may be formed between the first plate 8 and the second plate 9, and a plurality of, for example, circular through holes 11 may be formed in the first plate 8. As a preferred embodiment, the sound-absorbing panel 7 may be of one-piece construction.

In some embodiments, the sound-deadening chamber 10 is in a strip shape, and the through holes 11 are arranged along the length direction of the sound-deadening chamber 10. For example, the sound-deadening chambers 10 in the sound-absorbing panel 7 may be arranged in a grid, the through holes 11 may be arranged in a row or a column, and each sound-deadening chamber 10 may correspond to one or more rows of the through holes 11, and may be specifically provided according to the sizes of the sound-deadening chambers 10 and the through holes 11.

In the implementation process, when the noise standard is satisfied, all the housings 1 may not be formed by the sound-absorbing plate 7, and the sound-absorbing plate 7 may be disposed only at a position where noise is loud or a position where noise is spread outward. As shown in fig. 5, in some embodiments, an air inlet (not shown) is provided on the bottom plate 4 near the middle of the impeller 2, an air outlet 13 is formed on the side plate 5, and at least a portion of the bottom plate 4 near the air outlet 13 is formed by the sound-absorbing plate 7. Of course, the portion of the top plate 3 near the outlet 13 may be formed by the sound-absorbing plate 7. Therefore, the noise can be ensured to meet the standard requirement, and the production cost can be reduced. The sound-absorbing plate 7 and the rest of the housing 1 can be manufactured by an integral molding process, or can be connected by, for example, thermoplastic welding or other processes.

In some embodiments, a volute air guide channel 14 is formed between the periphery of the impeller 2 and the inner side wall of the housing 1. For example, the inner cavity 6 of the housing 1 may be circular, and the impeller 2 may be eccentrically disposed in the inner cavity 6, so that a volute-shaped air guide passage 14 is formed between the periphery of the impeller 2 and the inner wall of the housing 1. The volute air guide channel 14 comprises a reducing end and a flaring end, and the flaring end of the volute air guide channel 14 can be configured to be opposite to the air outlet 13. Therefore, the air flow inside the heat dissipation fan can be improved, and the heat dissipation efficiency of the heat dissipation fan can be further improved.

The embodiment of the utility model provides an electronic equipment is still provided, including as above any embodiment radiator fan. The electronic device may be, for example, a desktop computer, a notebook computer, a tablet computer, or other electronic devices. The electronic device may include at least one processor, as well as other heat generating components. Because the cooling fan has small noise and good heat dissipation, the electronic equipment using the cooling fan also has the advantage of small noise, and can provide good use experience for users.

The utility model discloses radiator fan can the effective absorption noise through the sound structure of inhaling on the abatvoix 7, can show the noise that reduces radiator fan to need not to shelter from radiator fan's air intake and air outlet 13, can solve the problem that noise and flow can't be balanced, the electronic equipment who uses this radiator fan has the less advantage of noise equally.

The above embodiments are only exemplary embodiments of the present invention, and are not intended to limit the present invention, and the protection scope of the present invention is defined by the claims. Various modifications and equivalents of the invention can be made by those skilled in the art within the spirit and scope of the invention, and such modifications and equivalents should also be considered as falling within the scope of the invention.

Claims

1. A heat dissipating fan, comprising: the impeller type vibration damper comprises a shell, wherein the shell comprises a top plate, a bottom plate and a side plate, the top plate and the bottom plate are arranged oppositely, the side plate is arranged between the top plate and the bottom plate in an enclosing mode, an inner cavity of the shell is formed by the top plate, the bottom plate and the side plate in an enclosing mode, an impeller is arranged in the inner cavity, and all or part of at least one of the top plate and the bottom plate is composed of a sound absorption plate;

2. The heat dissipating fan as claimed in claim 1, wherein a gap is formed between the first plate and the second plate, and a plurality of partition plates are disposed between the first plate and the second plate at intervals to divide the gap into a plurality of sound absorbing chambers each communicating with a different one of the through holes.

3. The heat dissipating fan as claimed in claim 1, wherein the muffling chamber is in a shape of a strip, and the through holes are arranged along a length direction of the muffling chamber.

4. The heat dissipating fan as claimed in claim 1, wherein the bottom plate has an air inlet at a position close to the middle of the impeller, the side plate has an air outlet, and at least a portion of the bottom plate close to the air outlet is formed by the sound absorbing plate.

5. The heat dissipating fan as claimed in claim 4, wherein a volute air guiding channel is formed between the periphery of the impeller and the inner sidewall of the casing, and a flared end of the volute air guiding channel faces the air outlet.

6. An electronic apparatus, characterized by comprising the heat dissipation fan according to any one of claims 1 to 5.