CN210075878U

CN210075878U - Heat abstractor and contain its converter

Info

Publication number: CN210075878U
Application number: CN201920152961.2U
Authority: CN
Inventors: 姚中; 张栋; 谢伟忠
Original assignee: Kobe Drive Technology (shanghai) Co Ltd
Current assignee: Kobe Drive Technology (shanghai) Co Ltd
Priority date: 2019-01-29
Filing date: 2019-01-29
Publication date: 2020-02-14
Anticipated expiration: 2029-01-29

Abstract

The utility model provides a heat abstractor and contain its converter, this heat abstractor including: the radiating plate body is provided with a plurality of groups of radiating plate groups which are arranged in parallel and protrude out of the surface; each group of radiating fin groups comprises a plurality of fins; a gap is formed between adjacent fins in the same group of fin groups, and the fins between the adjacent fin groups are distributed in a staggered mode. The utility model provides a heat abstractor and contain its converter has strengthened fluidic circulation ability, has improved the coefficient of heat transfer, has further improved the heat convection coefficient of its corresponding passageway, has reduced manufacturing cost simultaneously, also makes overall structure more compact.

Description

Heat abstractor and contain its converter

Technical Field

The utility model relates to a heat abstractor, in particular to heat abstractor and contain its converter.

Background

The high-speed blower has the advantages of high efficiency, energy conservation, cleanness, environmental protection, compact volume, convenient maintenance, long service life and the like, is applied to domestic and foreign markets and has more and more obvious application advantages in domestic sewage treatment, steel mills, power plants, chemical industry, food industry and other industries. The core technology is that the high-speed permanent magnet synchronous motor directly drives the impeller, and the efficiency of the permanent magnet motor is up to more than 95%, so that high-efficiency energy-saving application can be realized.

In the control process of the high-speed motor, a high-power frequency converter is inevitably needed, but the motor and the controller belong to heating components, the heat emission is low under normal conditions, and high requirements on a cooling system cannot be provided, but the higher the power of the frequency converter is, the higher the switching frequency is, and the higher the power loss is. Generally, the power consumption of the frequency converter is 4-5% of the capacity (wherein the inversion part accounts for about 50%, the rectification and direct current loop accounts for about 40%, and the control and protection loop accounts for 5-10%), and the 10 ℃ rule shows that when the temperature of the device is reduced by 10 ℃, the reliability of the device is doubled. Therefore, how to deal with the heat dissipation of the frequency converter, reduce the temperature rise and improve the reliability of the device is important how to prolong the service life of the equipment. Fig. 1 is a schematic structural diagram of a conventional heat dissipation apparatus, which includes a body 100, and a plurality of heat dissipation fins 101 are disposed on the body 100 in parallel, so that higher requirements are placed on power consumption and structural compactness of a heat dissipation system in a high-speed blower application.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to provide a heat abstractor and contain its converter in order to overcome among the prior art heat abstractor bulky and the not good enough defect of radiating effect.

The utility model discloses an above-mentioned technical problem is solved through following technical scheme:

a heat dissipation device is characterized by comprising: the radiating plate body is provided with a plurality of groups of radiating plate groups which are arranged in parallel and protrude out of the surface; each group of radiating fin groups comprises a plurality of fins; a gap is formed between adjacent fins in the same group of fin groups, and the fins between the adjacent fin groups are distributed in a staggered mode. The staggered design ensures that the boundary layer of the fluid on one fin is damaged by the staggered fin without completely developing, thereby enhancing the circulation capacity of the fluid and improving the heat transfer coefficient.

Preferably, the length direction of the fins in the same group of radiating fin groups is perpendicular to the arrangement direction of the group of radiating fins.

Preferably, the width direction of the fins in the same group of radiating fin groups is perpendicular to the arrangement direction of the group of radiating fins.

Preferably, the effective length of the fin is 12-13 mm. The shorter the effective length of the fin is, the faster the fluid in the boundary layer of the fin is damaged, so that the disturbance of the fluid is enhanced, and the convective heat transfer coefficient of the corresponding channel is further improved.

Preferably, the interval range of the gap is 12-15 mm.

Preferably, the height of the fins protruding from the surface of the heat dissipation plate body ranges from 60 mm to 65 mm. The increase in height of the fins will result in a larger wind diameter, thereby reducing the turbulence level and consequently the heat transfer capacity of the heat sink.

Preferably, the width range of the fin is 2-3 mm.

Preferably, both ends of each fin point to the adjacent gaps, and the ends of the fins in the adjacent fin groups are arranged in a staggered manner.

Preferably, the heat dissipation device comprises seven groups of heat dissipation fin groups, each adjacent heat dissipation fin group comprises nine fins or eight fins, the space between the gaps of the adjacent fins in the same group of heat dissipation fin groups is 14.6mm, the effective length of each fin is 12.5mm, the width of each fin is 2.5mm, and the height of each fin is 62.5 mm.

The utility model also provides a converter, its characteristics lie in, this converter above-mentioned any kind heat abstractor.

In the present invention, the above-mentioned preferred conditions can be combined at will on the basis of general knowledge in the field, so as to obtain the preferred embodiments of the present invention.

The utility model discloses an actively advance the effect and lie in: the utility model provides a heat abstractor has strengthened fluidic circulation ability, has improved heat transfer coefficient, has further improved the heat convection coefficient of its corresponding passageway, has reduced manufacturing cost simultaneously, also makes overall structure more compact.

Drawings

Fig. 1 is a schematic structural diagram of a heat dissipation device in the prior art.

Fig. 2 is a schematic structural diagram of the heat dissipation device of the present invention.

Detailed Description

The present invention will be more clearly and completely described below with reference to the accompanying drawings.

As shown in fig. 2, the heat dissipation device in this embodiment includes a heat dissipation plate body 1, seven groups of heat dissipation plate groups 2 that are parallel to each other and have protruding surfaces are disposed on the heat dissipation plate body 1, and each adjacent group of the heat dissipation plate groups includes nine or eight fins 21. The length direction of the fins in the same group of radiating fin groups is vertical to the arrangement direction of the group of radiating fins. In addition, a gap S is formed between adjacent fins 21 in the same group of fin groups, in this embodiment, the distance of the gap S is preferably 14.6mm, and in other embodiments, the distance of the gap S may be selected within a range of 12-15 mm. As shown in fig. 2, the fins between adjacent fin groups are distributed in a staggered manner. Both ends of the fins 21 point to the adjacent gaps S, and the ends of the fins 21 in the adjacent fin groups are arranged in a staggered manner.

In the embodiment, the effective length of the fin is 12-13 mm, and the effective length of the fin is preferably 12.5mm in the embodiment. The height range of the fins protruding out of the surface of the radiating plate body is 60-65 mm, and the height of the fins is preferably 62.5mm in the embodiment. The width range of the fin is 2-3 mm, and the width of the fin is preferably 2.5mm in the embodiment.

Of course, in other embodiments, the width direction of the fins in the same group of fins may be perpendicular to the arrangement direction of the group of fins.

Referring again to the prior art heat sink of fig. 1, the surface of the body 100 extends over a fin 101 having a length of 170.5mm, which extends substantially to opposite ends of the body 100. When the gap S between adjacent heat dissipation fins is 14.6mm, the width of each heat dissipation fin is 2.5mm, and the height of each heat dissipation fin is 76.5mm, the heat dissipation effect of the two heat dissipation fins is compared, and it can be found that the heat dissipation efficiency of the heat dissipation device in the embodiment can be improved by about 20% -30%, and the cost can be reduced by about 50%.

The frequency converter in this embodiment includes the heat dissipation device with the above structure, and the connection manner thereof can be performed by a manner in the prior art, which is not described herein again.

Although particular embodiments of the present invention have been described above, it will be appreciated by those skilled in the art that these are examples only and that the scope of the present invention is defined by the appended claims. Various changes and modifications to these embodiments may be made by those skilled in the art without departing from the spirit and the principles of the present invention, and these changes and modifications are all within the scope of the present invention.

Claims

1. A heat dissipation device, comprising: the radiating plate body is provided with a plurality of groups of radiating plate groups which are arranged in parallel and protrude out of the surface; each group of radiating fin groups comprises a plurality of fins; a gap is formed between adjacent fins in the same group of fin groups, and the fins between the adjacent fin groups are distributed in a staggered mode.

2. The heat sink of claim 1, wherein the length direction of the fins in the same set of fins is perpendicular to the arrangement direction of the set of fins.

3. The heat sink of claim 1, wherein the width direction of the fins in the same set of fins is perpendicular to the arrangement direction of the set of fins.

4. The heat dissipating device of claim 2 or claim 3, wherein the fins have an effective length of 12 to 13 mm.

5. The heat dissipating device of claim 4, wherein the gap has a pitch in the range of 12 to 15 mm.

6. The heat dissipating device of claim 5, wherein the fins protrude from the surface of the heat dissipating plate body by a height of 60 to 65 mm.

7. The heat dissipating device of claim 6, wherein said fins have a width in the range of 2 to 3 mm.

8. The heat sink of claim 7, wherein both ends of the fins are directed toward the adjacent gaps, and the ends of the fins in the adjacent fin groups are staggered.

9. The heat dissipating device of claim 8, wherein said heat dissipating device comprises seven said fin groups, each adjacent said fin group comprises nine fins or eight fins, the spacing between the gaps of adjacent fins in the same fin group is 14.6mm, each said fin has an effective length of 12.5mm, a width of 2.5mm, and a height of 62.5 mm.

10. A frequency converter, characterized in that it comprises a heat sink according to any of claims 1-9.