CN209930775U

CN209930775U - Combined type water-cooling radiator

Info

Publication number: CN209930775U
Application number: CN201920061638.4U
Authority: CN
Inventors: 国占昌; 王志鹏; 何玉芳
Original assignee: Rui Xinchang Light Alloy (changshu) Co Ltd
Current assignee: Ruixinchang Technology (Changshu) Co., Ltd
Priority date: 2019-01-15
Filing date: 2019-01-15
Publication date: 2020-01-10
Anticipated expiration: 2029-01-15

Abstract

The utility model provides a combined type water-cooling radiator, including upper and lower demountable assembly's apron and base plate, apron lower extreme equipartition has a plurality of fork wings, and the outer both ends of cooling trough communicate respectively and are equipped with inhalant canal and exhalant canal, form the cooling water course that is parallel to each other in the cooling trough, form the distributive groove between guide plate and the inhalant canal, form the water catch bowl between guide plate and the exhalant canal, are equipped with the board that flow equalizes in the distributive groove, and the position corresponds and pegs graft each other between fork wing and the cooling water course. The utility model has the advantages that the whole extrusion forming or CNC processing of the base plate and the cover plate is convenient for processing and integration, and the yield is high; the composite radiator effectively increases the heat exchange area and enhances the disturbance of fluid, the heat exchange effect is more obvious, and the uniformity of the temperature distribution of the cooled surface is greatly improved; compared with a pure straight water channel heat exchanger, the heat exchange effect is greatly increased under the same pressure drop; compared with a needle-shaped radiator, the pressure drop is obviously reduced under the condition of the same heat exchange quantity.

Description

Combined type water-cooling radiator

Technical Field

The utility model belongs to the technical field of the power electronics heat dissipation, especially, relate to a combined type water-cooling radiator.

Background

The development of power electronics greatly promotes the rapid development of computer technology, aerospace technology and electronic devices. Electronic products are moving toward high integration, high frequency, and high speed, which results in a dramatic increase in the power density of the devices. The traditional cooler can not effectively take away the heat of the electronic device, so that the temperature of the electronic device is increased, the temperature distribution is uneven, the working state and the stability of the electronic device are seriously influenced, and even the electronic device is damaged due to thermal stress. Therefore, efficient and stable heat dissipation technology is important.

The cooling method commonly used at home and abroad at present comprises the following steps: natural cooling, forced air cooling, liquid cooling techniques, and the like. The liquid cooling technology is higher than air cooling efficiency by several times, and has the unique advantages in the aspects of silencing and reducing noise of the cooling effect and the like, so that much attention is paid to people, and the liquid cooling technology is the most potential heat dissipation mode. The straight water channel radiator is simple to process and low in cost, is most widely applied to a liquid cooling technology, but has two design limitations of the straight water channel heat exchanger. Firstly, the heat exchange capacity is insufficient; secondly, the temperature of the cooling medium changes greatly between the inlet and the outlet, so that the temperature distribution of the heat exchange surface is uneven.

Disclosure of Invention

In view of this, the utility model aims at providing a combined type water-cooling radiator for solve high heat flux density electronic device's effective heat dissipation, temperature distribution homogeneity problem, provide reliable temperature environment for electronic device's operation.

In order to achieve the above purpose, the technical scheme of the utility model is realized like this:

the utility model provides a combined type water-cooling radiator, includes upper and lower demountable assembly's apron and base plate, apron lower extreme equipartition has a plurality of fork wings, and the base plate upper end is equipped with the cooling trough, and both ends outside the cooling trough communicate respectively and are equipped with inhalant canal and exhalant canal, and mutually parallel arrangement has a plurality of guide plate in the cooling trough, forms the cooling water course that is parallel to each other, forms the distributive groove between guide plate and the inhalant canal, forms the water catch bowl between guide plate and the exhalant canal, is equipped with the flow equalizing board in the distributive groove, and the position corresponds and pegs graft each other between fork wing.

Furthermore, the flow equalizing plate is arranged at the position right opposite to the water inlet of the water inlet channel.

Further, the cover plate and the base plate are made of aluminum alloy materials and are integrally formed.

Further, the fork fin is a fin with a wide upper part and a narrow lower part.

Further, the longitudinal section of the fork fin is trapezoidal, conical, wavy or triangular.

Furthermore, the cover plate and the base plate are connected into a whole in a brazing or friction stir welding mode.

Further, the distance between two adjacent fork fins in two adjacent cooling water channels is larger than the width of the cooling water channel.

Further, the height of the fork fin is smaller than that of the cooling water channel, and the maximum width of the fork fin is smaller than that of the cooling water channel.

Compared with the prior art, combined type water-cooling radiator have following advantage:

1. the substrate and the cover plate are integrally extruded or processed by CNC, so that the processing and integration are convenient, and the yield is high;

2. the composite radiator effectively increases the heat exchange area and enhances the disturbance of fluid, the heat exchange effect is more obvious, and the uniformity of the temperature distribution of the cooled surface is greatly improved;

3. compared with a pure straight water channel heat exchanger, the heat exchange effect is greatly increased under the same pressure drop;

4. compared with a needle-shaped radiator, the pressure drop is obviously reduced under the condition of the same heat exchange quantity.

5. The invention meets the requirement of better heat exchange effect under the condition of controllable pressure drop and greatly improves the uniformity of the temperature distribution of the substrate surface by the optimized design and layout of the straight water channel structure. The high-power heat dissipation device is applied to a high-power chip heat dissipation device and has the advantages of good heat matching performance, high heat dissipation speed, uniform temperature and the like.

Drawings

The accompanying drawings, which form a part hereof, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without undue limitation. In the drawings:

fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic perspective view of a cover plate;

FIG. 3 is a top view of the cover plate;

FIG. 4 is a schematic view of the plane A-A in FIG. 3;

FIG. 5 is a schematic view of plane B-B of FIG. 3;

FIG. 6 is a schematic perspective view of a substrate;

FIG. 7 is a top view of a substrate;

FIG. 8 is a schematic view taken along plane C-C of FIG. 7;

FIG. 9 is a schematic view of the utility model after plugging;

FIG. 10 is a longitudinal cross-sectional view taken along plane D-D of FIG. 9;

FIG. 11 is a transverse cross-sectional view of FIG. 9;

FIG. 12 is an enlarged view of a single channel of FIG. 11;

FIG. 13 is a schematic view of 3 cross-sectional shapes of fork fins;

FIG. 14 is a schematic view of a friction stir welding connection of substrates;

description of reference numerals:

1. the water heater comprises a cover plate, 2, a base plate, 3, fork fins, 4, a water inlet channel, 5, a water outlet channel, 6, a cooling water channel, 7, a water dividing groove, 8, a water collecting groove, 9, a flow equalizing plate, 10, a heating block, 11 and an installation step.

Detailed Description

It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.

The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

As shown in fig. 1-14, a combined water-cooled radiator is a fluid forced convection dislocation combined channel heat exchanger, which includes a cover plate 1 and a base plate 2 that are detachably assembled from top to bottom, a plurality of fork fins 3 are uniformly distributed at the lower end of the cover plate 1, a cooling water tank is arranged at the upper end of the base plate 2, a water inlet channel 4 and a water outlet channel 5 are respectively communicated with the two ends outside the cooling water tank, a plurality of guide plates are arranged in the cooling water tank in parallel to each other to form a cooling water channel 6 that is parallel to each other, a diversion trench 7 is formed between the guide plates and the water inlet channel 4, a water collection trench 8 is formed between the guide plates and the water outlet channel 5, a flow equalizing plate 9 is arranged in the diversion trench.

The flow equalizing plate 9 is arranged at the position right opposite to the water inlet of the water inlet channel 4.

The cover plate 1 and the base plate 2 are made of aluminum alloy materials and are integrally formed. But not limited to, aluminum alloy materials.

The fork fin 3 is a fin with a wide upper part and a narrow lower part. The longitudinal section of the fork fin 3 is trapezoidal, conical, triangular or waved on two sides, as shown in fig. 13. But are not limited to these shapes.

The cover plate 1 and the base plate 2 are connected into a whole in a brazing or friction stir welding mode.

The distance between two adjacent fork fins 3 in two adjacent cooling water channels 6 is larger than the width of the cooling water channels 6. The height of the fork fin 3 is smaller than that of the cooling water channel 6, and the maximum width of the fork fin 3 is smaller than that of the cooling water channel 6.

The processing area and the processing density of the cooling water channel 6 and the fork fins 3 on the cover plate can be determined according to the size of a cooled device.

Based on the convection heat transfer theory of increasing the heat transfer area and fluid disturbance, the design of matching a straight water channel and an inverted vertical fork fin 3 is adopted at the main part of the heat exchanger. The structural size, the density degree and the number of channel groups on the radiating surface of the straight water channel and the inverted fork fins 3 can be optimally designed according to the practical conditions of the power, the size and the like of an actual electronic device. On one hand, the composite channel radiator effectively expands the heat exchange area, forms sudden expansion and sudden contraction of the flow area in the flow direction, strengthens the disturbance of fluid and improves the heat exchange efficiency; on the other hand, the optimized and reasonable inverted fin structure size is adopted, the uniformity of the temperature distribution of the cooled surface can be greatly improved under a certain pressure drop condition, and the heat dissipation problem of the electronic device with high heat flow density is effectively solved.

In consideration of the assembly problem of the radiator and the electronic device, the fluid inlet and the fluid outlet of the composite water-cooling radiator are designed on the base plate 1 and are parallel to the flowing direction of the fluid in the internal water channel. The flow equalizing plate 9 is arranged at the fluid inlet, so that the flow uniformity of the internal water channel can be effectively improved.

The heat exchange working medium can be water, refrigerant, etc. respectively. According to the working medium and the optimal working temperature range of the device, the cooling technical requirement is realized by the convective heat transfer of the fluid on the heat transfer surface of the composite cooling water channel. The utility model discloses a heat conduction materials such as aluminum alloy and tungsten copper can be chooseed for use, and the overall geometry size can be according to being confirmed by cooling device size and installation requirement.

As shown in fig. 9-10, the cover plate and the base plate are assembled together to form a closed complete radiator, and fluid enters the radiator from the water inlet channel 4 on the base plate 2, is uniformly dispersed to each cooling water channel 6 through the diversion channel 7 and the flow equalizing plate 9, absorbs heat from the bottom surface and the surface of the straight water channel, is concentrated to the water collecting tank 8, and finally flows out from the water outlet channel 5 on the base plate 2. The heat dissipation of the electronic device with high heat flux density is realized, the operating temperature and the temperature uniformity of the electronic device are ensured, and the service life of the heat dissipation device is prolonged.

In this embodiment, the heating block is used to replace the actual electronic device for performance test, and as shown in fig. 9, the combined heat sink is used to cool the heating block 10. The input voltage is controlled according to the heat generation amount of the device.

The processing mode is as follows: the aluminum substrate 2 and the cover plate 1 of the composite water-cooling radiator are integrally formed, the cover plate 1 is processed into long straight fins by adopting an integral extrusion process, and then the long straight fins are milled into discontinuous small fork fins; the base plate 2 is directly machined into a parallel water channel by adopting CNC. The cover plate 1 with the fork fins 3 is buckled with the base plate 2 with the water channel, so that the fork fins 3 are matched with the center of the cooling water channel 6, and the cross section of the water channel after assembly is shown in fig. 11-12.

The assembly seal of the radiator is connected into a whole by adopting a brazing or friction stir welding mode, the connection strength is high, and the processing is convenient. In the friction stir welding connection manner, as shown in fig. 14, the base plate 2 is provided with a mounting step 11 which is matched with the cover plate 1, so that the connection of the cover plate 1 and the base plate 2 is more integrated.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A combined type water-cooling radiator is characterized in that: including upper and lower demountable assembly's apron (1) and base plate (2), apron (1) lower extreme equipartition has a plurality of fork wing (3), and base plate (2) upper end is equipped with the cooling trough, and the outer both ends of cooling trough communicate respectively and are equipped with inhalant canal (4) and exhalant canal (5), and mutual parallel arrangement has a plurality of guide plate in the cooling trough, forms cooling water course (6) that are parallel to each other, forms water diversion groove (7) between guide plate and inhalant canal (4), forms water catch bowl (8) between guide plate and exhalant canal (5), is equipped with flow equalizing plate (9) in water diversion groove (7), and the position corresponds and pegs graft each other between fork wing (3) and cooling water course (6).

2. The composite water-cooled heat sink of claim 1, wherein: the flow equalizing plate (9) is arranged at the position right opposite to the water inlet of the water inlet channel (4).

3. The composite water-cooled heat sink of claim 1, wherein: the cover plate (1) and the base plate (2) are made of aluminum alloy materials and are integrally formed.

4. The composite water-cooled heat sink as recited in any one of claims 1 to 3, wherein: the fork fins (3) are fins with wide upper parts and narrow lower parts.

5. The composite water-cooled heat sink of claim 4, wherein: the longitudinal section of the fork fin (3) is trapezoidal, conical, triangular or waved on two sides.

6. The composite water-cooled heat sink of claim 3, wherein: the cover plate (1) and the base plate (2) are connected into a whole in a brazing or friction stir welding mode.

7. The composite water-cooled heat sink of claim 1, wherein: the distance between two adjacent fork fins (3) in two adjacent cooling water channels (6) is larger than the width of the cooling water channels (6).

8. The composite water-cooled heat sink of claim 1 or 7, wherein: the height of the fork fin (3) is smaller than that of the cooling water channel (6), and the maximum width of the fork fin (3) is smaller than that of the cooling water channel (6).