Liquid cooling plate and converter

Abstract

The utility model discloses a liquid cooling plate and a converter, the liquid cooling plate comprises a plate main body, the plate main body is provided with a liquid outlet channel, a liquid outlet gathering channel and a liquid outlet, and the liquid outlet and the liquid outlet channel are communicated through the liquid outlet gathering channel; and the cross sectional area of the liquid outlet gathering channel is gradually increased in the direction close to the liquid outlet. According to the technical scheme of the utility model, the technical problem that the existing liquid cooling structure is easy to generate larger impact force at the outlet is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of liquid cooling and heat dissipation, in particular to a liquid cooling plate and a converter. Background Art

[0002] When electronic products or equipment are in use, electronic components will generate heat. For devices that generate a lot of heat, a liquid cooling system is usually used to dissipate heat. The liquid cooling system is a closed circulation system. Generally, the heat-generating device is installed on a liquid cooling plate. Low-temperature coolant enters the liquid cooling plate to take away the heat, and high-temperature coolant flows out of the liquid cooling plate. In the existing liquid cooling plate structure, the coolant flows through the flow channel of the liquid flow plate and then flows out of the outlet. The impact force at the outlet is relatively large, which will reduce the service life of the liquid cooling plate. Utility Model Content

[0003] The main purpose of the utility model is to provide a liquid cooling plate and a converter, aiming to solve the technical problem that the existing liquid cooling structure is prone to generate a large impact force at the outlet.

[0004] To achieve the above-mentioned purpose, an embodiment of the utility model proposes a liquid cooling plate, which includes a plate body, and the plate body has a liquid outlet channel, a liquid outlet collecting channel and a liquid outlet, and the liquid outlet and the liquid outlet are connected through the liquid outlet collecting channel; wherein the cross-sectional area of ​​the liquid outlet collecting channel gradually increases in the direction approaching the liquid outlet.

[0005] Optionally, in an embodiment of the present invention, the inner diameter of the liquid outlet collecting channel gradually increases in a direction approaching the liquid outlet.

[0006] Optionally, in an embodiment of the present invention, the inner wall of the liquid outlet collecting channel has a step structure in a direction close to the liquid outlet.

[0007] Optionally, in an embodiment of the present invention, the inner wall of the liquid outlet collecting channel has a plurality of steps in a direction close to the liquid outlet, and the connecting surfaces of two adjacent steps are inclined.

[0008] Optionally, in an embodiment of the present utility model, the inner wall of the liquid outlet collecting channel is inclined in a direction close to the liquid outlet.

[0009] Optionally, in one embodiment of the utility model, a guide portion is provided at one end of the liquid outlet close to the liquid outlet collecting channel, the guide portion and the liquid outlet collecting channel are arranged on opposite sides of the liquid outlet, and the guide portion protrudes from the liquid outlet and guides the coolant in the liquid outlet collecting channel to the liquid outlet.

[0010] Optionally, in an embodiment of the present invention, the guide portion is an arc-shaped structure.

[0011] Optionally, in an embodiment of the present invention, a plurality of groups of the liquid outlet channels are spaced apart along the axial direction of the liquid outlet collecting channel, and each group of the liquid outlet channels includes a plurality of liquid outlet sub-channels arranged in parallel along the axial direction of the liquid outlet collecting channel.

[0012] Optionally, in an embodiment of the present utility model, the liquid cooling plate further comprises a liquid inlet provided on the plate body, and the liquid inlet is communicated with the liquid outlet channel.

[0013] To achieve the above objective, an embodiment of the present invention provides a converter, which includes the liquid cooling plate described above and a heating element connected to the liquid cooling plate.

[0014] Compared with the prior art, in a technical solution proposed by the utility model, the coolant flows from the liquid inlet into the liquid outlet channel of the plate body. The coolant will take away the heat of the heating device on the surface of the plate body during the flow in the liquid outlet channel, thereby realizing the heat dissipation of the heating device. The coolant in the liquid outlet channel becomes a high-temperature coolant after heat exchange with the heating device, and is collected in the liquid outlet collection channel, and finally flows out from the liquid outlet. Since the cross-section of the liquid outlet collection channel gradually increases in the direction close to the liquid outlet, when the flow rate is constant, the cross-sectional area becomes larger, which will reduce the flow rate, that is, reduce the flow rate at the liquid outlet, thereby reducing the impact force at the liquid outlet, preventing the liquid cooling plate from being damaged due to a large impact force, and increasing the service life of the liquid cooling plate. Moreover, the flow rate of the liquid outlet becomes smaller, which can prevent the generation of a strong vortex, thereby reducing the flow resistance, which is beneficial to the increase of the flow rate of the entire liquid outlet collection channel, and further improves the heat dissipation effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0016] Figure 1 This is a schematic structural diagram of an embodiment of a liquid cooling plate of the utility model;

[0017] Figure 2 It is a partial structural schematic diagram of an embodiment of the liquid cooling plate of the utility model.

[0018] Description of Figure Numbers:

[0019] Label name Label name 10 Board body 20 Liquid inlet 30 Liquid outlet 40 Liquid inlet channel 50 Liquid outlet channel 60 Liquid collection channel 70 Diversion part 80 Connection Channel

[0020] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the embodiments of the utility model.

[0022] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0023] In addition, in the embodiments of the present invention, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the embodiments of the present invention, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0024] In the embodiments of the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present invention can be understood according to specific circumstances.

[0025] In addition, the technical solutions between the various embodiments of the present utility model can be combined with each other, but it must be based on the fact that ordinary technicians in the field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the embodiments of the present utility model.

[0026] Devices with high heat generation have high requirements for heat dissipation capacity and generally use liquid cooling for heat dissipation. The liquid cooling system is a closed circulation system. Generally, the heat-generating device is installed on a liquid cooling plate. The low-temperature coolant enters the liquid cooling plate to take away the heat, and the high-temperature coolant flows out of the liquid cooling plate. In the existing liquid cooling plate structure, the coolant passes through the flow channel of the liquid flow plate and finally converges to the outlet and flows out. Due to the structural limitations of the outlet and the convergence effect of the coolant, the flow velocity at the outlet increases, and there is a greater impact force on the outlet, which will reduce the service life of the liquid cooling plate. In addition, strong vortices are easily generated at the outlet, which brings greater flow resistance, which is not conducive to the increase of the flow rate of the entire flow channel.

[0027] In view of this, an embodiment of the utility model provides a liquid cooling plate and an inverter, in which the cross-section of the liquid outlet aggregation channel gradually increases in the direction close to the liquid outlet. When the flow rate is constant, the larger the cross-sectional area, the smaller the flow rate, that is, the flow rate at the liquid outlet is reduced, thereby reducing the impact force at the liquid outlet, preventing the liquid cooling plate from being damaged due to a large impact force, and increasing the service life of the liquid cooling plate.

[0028] In order to better understand the above technical solution, the above technical solution is described in detail below with reference to the accompanying drawings.

[0029] like Figure 1 and Figure 2 As shown, an embodiment of the utility model proposes a liquid cooling plate, which includes a plate body 10, wherein the plate body 10 has a liquid outlet channel 50, a liquid outlet collecting channel 60 and a liquid outlet port 30, wherein the liquid outlet port 30 and the liquid outlet channel 50 are connected through the liquid outlet collecting channel 60; wherein the cross-sectional area of ​​the liquid outlet collecting channel 60 gradually increases in the direction approaching the liquid outlet port 30.

[0030] In the technical solution adopted in this embodiment, the coolant flows from the liquid inlet 20 into the liquid outlet channel 50 of the plate body 10. The coolant will take away the heat of the heating device on the surface of the plate body 10 during the flow of the liquid outlet channel 50, thereby achieving heat dissipation of the heating device. The coolant in the liquid outlet channel 50 becomes a high-temperature coolant after heat exchange with the heating device, and is collected in the liquid outlet collection channel 60, and finally flows out from the liquid outlet 30. The cross-sectional area of ​​the liquid outlet collection channel 60 gradually increases in the direction close to the liquid outlet 30. When the flow rate is constant, the increase in the cross-sectional area will reduce the flow rate, that is, reduce the flow rate at the liquid outlet 30, thereby reducing the impact force at the liquid outlet 30, preventing the liquid cooling plate from being damaged due to a large impact force, and improving the service life of the liquid cooling plate. Moreover, the flow rate of the liquid outlet 30 becomes smaller, which can prevent the generation of a strong vortex, thereby reducing the flow resistance, which is conducive to the increase of the flow rate of the entire liquid outlet collection channel 60, and further improves the heat dissipation effect.

[0031] Specifically, the liquid cooling plate in the embodiment of the utility model can be applied to a converter or electrical equipment to achieve heat dissipation of heating elements.

[0032] The liquid cooling plate includes a plate body 10, which can be made of aluminum, aluminum alloy, copper and other materials, and has good thermal conductivity. The plate body 10 has a liquid outlet channel 50, a liquid outlet collection channel 60, a liquid inlet 20 and a liquid outlet 30. The low-temperature coolant flows into the liquid outlet channel 50 from the liquid inlet 20, and then gathers into the liquid outlet collection channel 60, and finally flows out of the high-temperature coolant from the liquid outlet 30. During the flow of the low-temperature coolant from the liquid inlet 20 to the liquid outlet collection channel 60, the heat of the heating element installed on the surface of the plate body 10 will be taken away, so as to achieve heat dissipation of the heating element. In one embodiment, the liquid outlet channel 50 and the liquid outlet collection channel 60 can be integrally formed by an aluminum extrusion process, which can not only simplify the process, save manpower and cost, but also can be processed into any desired shape according to needs.

[0033] As an optional method, the liquid outlet channel 50 can be set along the longitudinal extension of the board body 10, and the liquid outlet collection channel 60 can be set along the lateral extension of the board body 10. This can increase the heat exchange area between the coolant and the heating element and further improve the heat dissipation effect.

[0034] Generally, there are multiple liquid outlet channels 50 at intervals along the lateral direction of the plate body 10, and the coolant in the multiple liquid outlet channels 50 is collected in the liquid outlet collection channel 60. The flow rate of the liquid outlet 30 increases under the effect of the coolant collection effect, and the impact force will also increase synchronously, which has an adverse effect on the safety of the plate body 10. To this end, it is necessary to reduce the flow rate at the liquid outlet 30 to reduce the adverse effect of the impact force on the plate body 10. In this embodiment, the cross-sectional area of ​​the liquid outlet collection channel 60 gradually increases in the direction close to the liquid outlet 30. In this way, when the flow rate is constant, the cross-sectional area of ​​the liquid outlet collection channel 60 becomes larger, which will reduce the flow rate, that is, reduce the flow rate at the liquid outlet 30, thereby reducing the impact force at the liquid outlet 30, preventing the liquid cooling plate from being damaged due to a large impact force, and improving the service life of the liquid cooling plate. Moreover, the flow rate of the liquid outlet 30 becomes smaller, which can prevent the generation of a strong vortex, thereby reducing the flow resistance, which is conducive to the increase of the flow rate of the entire liquid outlet collection channel 60, and further improving the heat dissipation effect.

[0035] In one embodiment, the inner diameter of the liquid outlet converging channel 60 gradually increases in the direction close to the liquid outlet 30. In this way, the cross-sectional area of ​​the liquid outlet converging channel 60 can be continuously increased, and the flow rate of the coolant can be quickly reduced. In this embodiment, the inner diameter of the liquid outlet converging channel 60 refers to the width of the liquid outlet converging channel 60.

[0036] Of course, in other embodiments, the inner wall of the liquid outlet consolidation channel 60 has a step structure in the direction close to the liquid outlet 30, so that the cross-sectional area of ​​the liquid outlet consolidation channel 60 can be discontinuously increased, and the flow rate of the coolant can be slowly reduced to prevent the flow rate from dropping too fast and affecting the smooth flow of the coolant. As an optional method, the liquid outlet consolidation channel 60 has multiple steps in the direction close to the liquid outlet 30, and the connecting surfaces of two adjacent steps are inclined. In this way, the coolant on the upper step can be diverted to the lower step by using the set connecting surface, reducing the flow rate of the coolant on the upper step toward the lower step, reducing the impact force on the lower step, and thus ensuring the safety of the plate body 10.

[0037] In addition, in another embodiment, the inner wall of the liquid outlet converging channel 60 is inclined in the direction close to the liquid outlet 30. It can be understood that in the direction close to the liquid outlet 30, the inner wall of the liquid outlet converging channel 60 is inclined away from the liquid outlet 30, so that the cross-sectional area of ​​the liquid outlet converging channel 60 can also be continuously increased in the direction close to the liquid outlet 30.

[0038] For example, refer to Figure 2 In one embodiment of the utility model, a guide portion 70 is provided at one end of the liquid outlet 30 close to the liquid outlet collection channel 60. The guide portion 70 and the liquid outlet collection channel 60 are provided on opposite sides of the liquid outlet 30. The guide portion 70 protrudes from the liquid outlet 30 and guides the coolant in the liquid outlet collection channel 60 to the liquid outlet 30. In this way, when the coolant in the liquid outlet collection channel 60 flows toward the liquid outlet 30, it will first contact the guide portion 70. When the coolant passes through the guide portion 70 and reaches the liquid outlet 30, the flow velocity is more uniform, reducing the increase in flow resistance caused by the internal turbulence of the fluid.

[0039] Exemplarily, in one embodiment of the utility model, the guide portion 70 is an arc-shaped structure, so that the guide portion 70 can prevent the secondary turbulence generated when colliding with the coolant, reduce the flow resistance, and enable the coolant to be smoothly guided to the liquid outlet 30 through the guide portion 70. As an optional manner, the guide portion 70 can be a semicircle. In order to improve the effect of the guide portion 70 in reducing the flow resistance, the height of the guide portion 70 should be as large as possible. As an optional manner, the guide portion 70 extends to the inner wall of the liquid outlet aggregation channel 60 opposite to the liquid outlet 30. It can be understood that the guide portion 70 is arranged flush with the liquid outlet aggregation channel 60.

[0040] Exemplarily, in one embodiment of the utility model, multiple groups of liquid outlet channels 50 are arranged at intervals along the axial direction of the liquid outlet collecting channel 60, and each group of liquid outlet channels 50 includes multiple liquid outlet sub-channels arranged in parallel along the axial direction of the liquid outlet collecting channel 60. In this way, the provision of multiple groups of liquid outlet channels 50 can increase the contact area between the coolant and the heating device and improve the heat dissipation effect. Moreover, each group of liquid outlet channels 50 includes multiple liquid outlet sub-channels arranged in parallel, which reduces the area of ​​each liquid outlet sub-channel, is more conducive to the flow of coolant, thereby accelerating the heat exchange between the coolant and the heating device, and further improving the heat dissipation effect.

[0041] For example, refer to Figure 1 In one embodiment of the utility model, the liquid cooling plate further includes a liquid inlet 20 provided on the plate body 10, and the liquid inlet 20 is connected to the liquid outlet channel 50. By providing the liquid inlet 20, the plate body 10 can be conveniently provided with cooling liquid. Specifically, a connecting channel 80 can be provided on the side of the liquid outlet channel 50 away from the liquid outlet collecting channel 60, and the connecting channel 80 is provided along the lateral direction of the plate body 10. At the same time, a liquid inlet channel 80 connecting the liquid inlet 20 and the connecting channel 80 is provided. The low-temperature cooling entering the liquid inlet channel 40 from the liquid inlet 20 flows into the liquid outlet channel 50 through the connecting channel 80, so that the connection between the liquid inlet channel 40 and the liquid outlet channel 50 can be conveniently achieved.

[0042] To achieve the above purpose, the embodiment of the utility model proposes a converter, the converter includes the liquid cooling plate described above and a heating element connected to the liquid cooling plate, and the liquid cooling plate is used to dissipate heat and cool the heating element. Specifically, the specific structure of the converter refers to the above embodiment. Since the converter adopts all the technical solutions of the above embodiment, it has at least all the beneficial effects brought by the technical solutions of the above embodiment, which will not be repeated here.

[0043] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the embodiment of the present invention. All equivalent structural changes made by using the description and drawings of the embodiment of the present invention under the inventive concept of the embodiment of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the embodiment of the present invention.

Claims

1. A liquid cooling plate, characterized in that: The liquid cooling plate includes a plate body, which has a liquid outlet channel, a liquid outlet collecting channel and a liquid outlet, wherein the liquid outlet and the liquid outlet channel are connected through the liquid outlet collecting channel; wherein the cross-sectional area of ​​the liquid outlet collecting channel gradually increases in a direction approaching the liquid outlet.

2. The liquid cooling plate according to claim 1, characterized in that: The inner diameter of the liquid outlet collecting channel gradually increases in a direction approaching the liquid outlet.

3. The liquid cooling plate according to claim 1, characterized in that: The inner wall of the liquid outlet collecting channel has a step structure in a direction close to the liquid outlet.

4. The liquid cooling plate according to claim 3, characterized in that: The inner wall of the liquid outlet collecting channel has a plurality of steps in a direction close to the liquid outlet, and the connecting surfaces of two adjacent steps are inclined.

5. The liquid cooling plate according to claim 1, wherein: The inner wall of the liquid outlet collecting channel is inclined in a direction close to the liquid outlet.

6. The liquid cooling plate according to claim 1, characterized in that: A guide portion is provided at one end of the liquid outlet close to the liquid outlet collecting channel. The guide portion and the liquid outlet collecting channel are provided on opposite sides of the liquid outlet. The guide portion protrudes from the liquid outlet and guides the coolant in the liquid outlet collecting channel to the liquid outlet.

7. The liquid cooling plate according to claim 6, characterized in that: The guide portion is an arc-shaped structure.

8. The liquid cooling plate according to any one of claims 1 to 7, characterized in that: The liquid outlet channels are provided in a plurality of groups at intervals along the axial direction of the liquid outlet collecting channel, and each group of the liquid outlet channels includes a plurality of liquid outlet sub-channels provided in parallel along the axial direction of the liquid outlet collecting channel.

9. The liquid cooling plate according to claim 8, characterized in that: The liquid cooling plate further comprises a liquid inlet arranged on the plate body, and the liquid inlet is communicated with the liquid outlet channel.

10. A converter, characterized in that: The converter comprises the liquid cooling plate according to any one of claims 1 to 9 and a heating element connected to the liquid cooling plate.

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