CN219068804U

CN219068804U - Near-end heat dissipation cold plate for realizing circulation heat dissipation

Info

Publication number: CN219068804U
Application number: CN202223474601.5U
Authority: CN
Inventors: 郭明凯; 刘利杰; 王志忠; 黄江常
Original assignee: Beijing Huahang Radio Measurement Research Institute
Current assignee: Beijing Huahang Radio Measurement Research Institute
Priority date: 2022-12-26
Filing date: 2022-12-26
Publication date: 2023-05-23
Anticipated expiration: 2032-12-26

Abstract

The utility model relates to a near-end heat-radiating cold plate for realizing circulating heat radiation, belongs to the technical field of aircraft equipment heat control systems, and solves the problems that the existing heat-radiating cold plate is poor in heat radiation uniformity and difficult to meet the heat radiation requirements of electronic components with long-time and ultrahigh heat flux density. The utility model comprises the following steps: a cold plate body and a metal pipe; the electronic components which generate heat are arranged on the cold plate main body; the metal pipeline is nested and arranged in the cold plate main body; the metal pipeline comprises a main runner and an annular runner; the main flow channel is linear, and the annular flow channel is of a rectangular annular structure; the main runner and the annular runner are mutually staggered and are mutually communicated. The heat dissipation cold plate realizes uniform heat exchange with a heat source by arranging the plurality of annular flow channels.

Description

Near-end heat dissipation cold plate for realizing circulation heat dissipation

Technical Field

The utility model relates to the technical field of aircraft equipment thermal control systems, in particular to a near-end heat dissipation cold plate for realizing circulation heat dissipation.

Background

In recent years, various aircrafts are continuously developed in the directions of high power and long distance, the functions of equipment are more and more complex, the heating power is multiplied, meanwhile, the aircrafts are also continuously developed in the directions of miniaturization and light weight, under the two technical backgrounds, the heat flux density of the aircrafts is rapidly increased, and how to realize more effective heat control in a limited space becomes a key for restricting the technical development of the aircrafts.

Because heat exchange with the outside is difficult to realize, the thermal control of the aircraft is mainly focused on a passive thermal control technology at present, but as various aircrafts continuously develop towards supersonic and hypersonic directions, the thermal environment facing the aircrafts is more and more severe, and heat dissipation is mainly carried out at present by arranging a phase-change material at the near end of an electronic component, however, because of the restrictions of the enthalpy value and the volume weight of the phase-change material, the thermal control requirement is more and more difficult to meet at present.

Therefore, in order to meet the heat dissipation of electronic components with long time and ultra-high heat flux density, a new near-end heat dissipation cold plate needs to be provided, and when a good heat exchange effect is achieved, the uniformity of heat exchange is ensured.

Disclosure of Invention

In view of the above analysis, the present utility model aims to provide a proximal heat-dissipating cold plate for realizing cyclic heat dissipation, which solves the problems of poor heat-dissipating uniformity, and difficulty in meeting the heat dissipation of electronic components with long-time and ultra-high heat flux density in the conventional heat-dissipating cold plate.

The aim of the utility model is mainly realized by the following technical scheme:

a near-end heat-dissipating cold plate for achieving cyclic heat dissipation, comprising: a cold plate body and a metal pipe; the electronic components which generate heat are arranged on the cold plate main body; the metal pipeline is nested and installed

Inside the cold plate body; the metal pipeline comprises a main runner and an annular runner; the main 5 flow channel is linear, and the annular flow channel is of a rectangular annular structure; the main runner and the annular runner are mutually staggered and are mutually communicated.

Further, the cold plate main body is made of aluminum alloy.

Further, the metal pipeline is a copper pipe, and the inner wall is plated with nickel.

Further, the cold plate main body is of a split structure.

0, the cold plate body further comprises: a cold plate upper layer and a cold plate lower layer; the upper layer of the cold plate is used for installing and fixing electronic components.

Further, the upper layer and the lower layer of the cold plate are both provided with pipeline clamping grooves with the same shape as the metal pipeline.

Further, the thickness of the pipeline clamping groove is half of the thickness of the metal pipeline.

5 further, the metal pipeline is arranged between the upper layer of the cold plate and the lower layer of the cold plate and is arranged in the pipeline clamping groove.

Further, the annular flow passage is a rectangular ring or an elliptical ring.

Further, the annular flow passage is disposed perpendicular to the main flow passage.

The technical scheme of the utility model can at least realize one of the following effects: 01. according to the near-end heat-dissipation cold plate, the runner is arranged in the near-end heat-dissipation cold plate, and is designed to be a combined mode of the main runner and the rectangular annular runner, so that the liquid metal can exchange heat fully with the liquid metal when the liquid metal circulates in the near-end heat-dissipation cold plate, meanwhile, the uniformity of heat exchange can be guaranteed, the temperature consistency of all parts of the near-end heat-dissipation cold plate is realized, and the stability of the performance of electronic components is further guaranteed.

52. The near-end heat-dissipation cold plate adopts a split structure, and is matched with a metal pipeline by arranging the pipeline clamping groove, so that the integral assembly of the near-end heat-dissipation cold plate is realized, and the production, the processing and the assembly are convenient.

In the utility model, the technical schemes can be mutually combined to realize more preferable combination schemes. Additional features and advantages of the utility model will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model. The objectives and other advantages of the utility model may be realized and attained by the structure particularly pointed out in the written description and drawings.

Drawings

The drawings are only for purposes of illustrating particular embodiments and are not to be construed as limiting the utility model, like reference numerals being used to refer to like parts throughout the several views.

FIG. 1 is a schematic diagram of the active thermal control system according to the present utility model;

FIG. 2 is a schematic view of a lower layer of a proximal heat sink cold plate according to the present utility model;

fig. 3 is a metal pipe inside the proximal heat sink cold plate of the present utility model.

Reference numerals:

1-a near-end heat dissipation cold plate; 2-an electromagnetically driven pump; 3-an energy storage device; 4-connecting pipelines; 5-electronic components; 101-a pipeline clamping groove; 102-a main runner; 102-annular flow channel.

Detailed Description

The following detailed description of preferred embodiments of the utility model is made in connection with the accompanying drawings, which form a part hereof, and together with the description of the embodiments of the utility model, are used to explain the principles of the utility model and are not intended to limit the scope of the utility model.

Example 1

In one embodiment of the present utility model, a proximal heat sink cold plate for achieving cyclic heat dissipation is disclosed, comprising: a cold plate body and a metal pipe; a heat-generating electronic component 5 is arranged on the cold plate main body; the metal pipeline is nested and arranged in the cold plate main body; the metal pipeline comprises a main runner 102 and an annular runner 103; the main flow channel 102 is linear, and the annular flow channel 103 is of a rectangular annular structure; the main flow channel 102 and the annular flow channel 103 are staggered and communicated with each other.

When the near-end heat-dissipation cold plate 1 is used, an active heat control system needs to be connected; as shown in fig. 1, the active thermal control system includes: the device comprises a near-end heat dissipation cold plate 1, an electromagnetic drive pump 2, an energy accumulator 3 and a connecting pipeline 4; the near-end heat dissipation cold plate 1 is arranged below an electronic component 5 needing heat dissipation; a metal pipeline is arranged in the near-end heat radiation cold plate 1; the near-end heat radiation cold plate 1, the electromagnetic drive pump 2 and the energy accumulator 3 are sequentially communicated through the connecting pipeline 4 to form a circulation passage; the circulating passage is circulated with liquid metal; the electromagnetic drive pump 2 is used for driving the liquid metal to flow in the circulating passage; the energy storage device 3 stores phase change material.

As shown in fig. 1: the near-end heat dissipation cold plate 1 is in direct contact with the electronic component 5 which generates heat and is responsible for leading out heat at the first time, meanwhile, a metal pipeline for circulating liquid metal is arranged in the near-end heat dissipation cold plate 1, and the liquid metal working medium flows through the near-end heat dissipation cold plate 1 to rapidly lead out the heat stored in the near-end heat dissipation cold plate 1. After the working medium flows out of the near-end heat-dissipation cold plate 1, the working medium is pressurized by the electromagnetic drive pump 2 to ensure the normal flow of fluid, the pressurized liquid metal flows through the energy accumulator 3 to store heat in the energy accumulator 3, and the liquid metal working medium flows back to the near-end heat-dissipation cold plate 1 again after heat dissipation in the energy accumulator 3 to realize circulation heat dissipation.

In a specific embodiment of the present utility model, two ends of the metal pipeline of the near-end heat-dissipating cold plate 1 are respectively provided with a working medium inlet and a working medium outlet.

Specifically, the cold plate main body of the proximal heat dissipation cold plate 1 is made of aluminum alloy. The near-end heat-dissipation cold plate 1 is in direct contact with the heating electronic component 5, so that generated heat is guaranteed to be led out at the fastest speed, the optimal heat-dissipation effect is guaranteed, and one heat control system can be connected with a plurality of near-end heat-dissipation cold plates 1 in series, so that air tightness is guaranteed.

Specifically, the metal pipeline inside the near-end heat-dissipation cold plate 1 is formed by paving copper metal pipes with nickel plated on the inner wall. The liquid metal flows in the metal tube.

The aluminum alloy main body bears the functions of mounting, fixing and storing heat, and as the main component gallium of the liquid metal is incompatible with the aluminum alloy, a metal pipeline inside the near-end heat-dissipation cold plate adopts a pure copper preparation pipeline with high heat conductivity and stable property, and further, in order to ensure the reliability, the inner wall of the copper pipeline is plated with nickel. When the liquid metal flows into the near-end heat-dissipation cold plate 1 from the working medium inlet, flows out of the near-end heat-dissipation cold plate 1 from the working medium outlet, and exchanges heat with the near-end heat-dissipation cold plate 1 in the process that the liquid metal flows through the near-end heat-dissipation cold plate 1, and the liquid metal rapidly heats up due to the high heat conductivity of the liquid metal.

In one embodiment of the present utility model, the cold plate body 1 is a split structure.

Specifically, the cold plate body 1 includes: a cold plate upper layer and a cold plate lower layer; and the upper layer of the cold plate and the lower layer of the cold plate have the same structure.

The upper layer of the cold plate is used for installing and fixing the electronic components 2.

As shown in fig. 2, the upper layer of the cold plate and the lower layer of the cold plate are both provided with a pipe clamping groove 101 with the same shape as the metal pipe.

Specifically, the thickness of the pipe clamping groove 101 is half of the thickness of the metal pipe. The fluid pipeline is arranged between the upper layer of the cold plate and the lower layer of the cold plate and is arranged in the pipeline clamping groove 101.

In one embodiment of the present utility model, as shown in fig. 3, the metal pipe includes a main runner 102 and an annular runner 103.

The main flow channel 102 is linear, and the annular flow channel 103 is of a rectangular annular structure. Alternatively, the annular flow passage 103 has an elliptical annular structure (not shown).

Specifically, as shown in fig. 3, the primary flow passage 102 is provided on the symmetry axis of the proximal heat radiation cold plate 1. The annular flow passage 103 is arranged perpendicular to the main flow passage 102.

Specifically, as shown in fig. 3, a plurality of annular flow channels 103 are distributed at intervals along the extending direction of the main flow channel 102, and the plurality of annular flow channels 103 are all communicated with the main flow channel 102. Specifically, the main flow channels 102 are connected between the adjacent annular flow channels 103, and the plurality of main flow channels 102 are located on the same straight line.

The implementation process comprises the following steps:

the liquid metal flows into the main runner 102 from the working medium inlet, and flows into the rectangular ring of the annular runner 103 via the main runner 102.

The liquid metal is divided into two symmetrical branches in the annular runner 103, and the two branches of the liquid metal flow along the annular runner 103 and finally converge on the next section of main runner 102.

The liquid metal flows through the main runners 102 and the annular runners 103 in sequence in the near-end heat-radiating cold plate 1 and then flows out from the working medium outlet.

In the process of flowing in the runner, the liquid metal exchanges heat with the near-end heat-dissipation cold plate 1; after heat exchange, the temperature of the liquid metal increases and the temperature of the near-end heat-dissipating cold plate 1 decreases. Because the annular flow channel 103 is perpendicular to the main flow channel 102, liquid metal can be uniformly distributed on the near-end heat-dissipation cold plate 1, rapid heat exchange is convenient to achieve, and the overall temperature uniformity of the near-end heat-dissipation cold plate 1 is maintained in the heat exchange process, so that the influence on the normal operation of electronic components due to the fact that the temperature difference of the near-end heat-dissipation cold plate is too large is avoided.

The present utility model is not limited to the above-mentioned embodiments, and any changes or substitutions that can be easily understood by those skilled in the art within the technical scope of the present utility model are intended to be included in the scope of the present utility model.

Claims

1. A near-end heat-dissipating cold plate for achieving cyclic heat dissipation, comprising: a cold plate body and a metal pipe; the electronic component (5) for heating is arranged on the cold plate main body; the metal pipeline is nested and arranged in the cold plate main body; the metal pipeline comprises a main runner (102) and an annular runner (103); the main flow channel (102) is linear, and the annular flow channel (103) is of a rectangular annular structure; the main flow channels (102) and the annular flow channels (103) are mutually staggered and communicated.

2. The near-end heat radiation cold plate for realizing the circulation heat radiation according to claim 1, wherein the cold plate main body (1) is made of aluminum alloy material.

3. The near-end heat-dissipating cold plate for achieving cyclic heat dissipation according to claim 1, wherein the metal pipe is a copper pipe and the inner wall is nickel-plated.

4. A proximal heat sink cold plate for achieving cyclic heat dissipation according to claim 2 or 3, characterized in that the cold plate body (1) is of split construction.

5. The near-end heat-dissipating cold plate for achieving cyclic heat dissipation according to claim 4, wherein the cold plate body (1) comprises: a cold plate upper layer and a cold plate lower layer; the upper layer of the cold plate is used for installing and fixing the electronic components (2).

6. The near-end heat radiation cold plate for realizing the circulation heat radiation according to claim 5, wherein the upper layer of the cold plate and the lower layer of the cold plate are both provided with a pipeline clamping groove (101) with the same shape as the metal pipeline.

7. The near-end heat radiation cold plate for realizing the circulation heat radiation according to claim 6, wherein the thickness of the pipe clamping groove (101) is half of the thickness of the metal pipe.

8. The near-end heat-dissipating cold plate for achieving cyclic heat dissipation according to claim 7, wherein the metal pipe is disposed between the cold plate upper layer and cold plate lower layer and in a pipe clamping groove (101).

9. The proximal heat sink for achieving cyclic heat dissipation according to claim 1, characterized in that the annular flow channel (103) is a rectangular or oval ring.

10. The near-end heat-dissipating cold plate for achieving cyclic heat dissipation according to claim 9, wherein the annular flow channel (103) is arranged perpendicular to the main flow channel (102).