Heat exchanger with multi-layer structure

Abstract

The utility model relates to a heat exchanger with a multi-layer structure. The heat exchanger is designed for solving the technical problems that an existing similar product is large in size, high in power, high in cost and poor in circulating flow heat dissipation effect. The heat exchanger is characterized in that an upper cover plate is arranged at a notch of an upper liquid cooling cavity groove in the top of a channel main body at a liquid cooling plate of the heat exchanger, a lower cover plate is arranged at a notch of a lower liquid cooling cavity groove in the bottom of the channel main body, coolants are arranged in the upper liquid cooling cavity groove and the lower liquid cooling cavity groove of the channel main body respectively, the upper liquid cooling cavity groove of the channel main body is an upper internal flow channel groove area, and the lower liquid cooling cavity groove of the channel main body is a lower internal flow channel groove area. A lower liquid cooling cavity groove of the channel main body is a lower internal flow channel groove area, a communicating channel is arranged between the upper internal flow channel groove area and the lower internal flow channel groove area in the channel main body, and two layers of flow channels are separated by a middle partition plate between the upper internal flow channel groove area and the lower internal flow channel groove area of the channel main body; the two layers of runner groove areas are communicated through a communicating channel; coolant in the channel body flows in through the liquid inlet and flows out through the liquid outlet, and reciprocating circulation is achieved.

Description

Technical Field

[0001] The utility model relates to a heat exchanger, which is a multi-layer structure heat exchanger. Background Art

[0002] At present, the working principle of liquid cooling of heat exchangers is to remove the heat emitted by high-power electronic components arranged on the surface of the liquid-cooled cold plate by letting the coolant flow through the flow channel groove processed in the plate, thereby achieving heat dissipation of the entire equipment. This type of heat exchanger is the core component of the liquid cooling system, and the heat dissipation performance of the liquid-cooled cold plate directly determines the working performance of the entire cooling system. However, conventional liquid cooling plates are designed according to the position and power size of the heat source module, or the heat source module is arranged on one side of the liquid cooling plate, resulting in a large size of the liquid cooling plate, or multiple liquid cooling plates are arranged in combination, resulting in increased costs. As disclosed in the Chinese patent literature, the application number is 202210245020.X, the authorization announcement date is 2023.06.14, and the utility model name is "a multi-layer split liquid cooling plate"; the multi-layer split liquid cooling plate includes a main heat exchange plate, an inlet guide plate, an outlet guide plate, an inlet and outlet pipes and an inlet and outlet joint. The main heat exchange plate, the inlet guide plate and the outlet guide plate are stacked from top to bottom to form a liquid cooling plate core. The main heat exchange plate is composed of a cover plate, a fin, a seal, and a partition. There is a gap between the seal and the inlet and outlet of the fin channel. There are two rows of throttle holes on the partition. The inlet guide plate and the outlet guide plate are engraved with guide grooves and confluence grooves. The cavities in the inlet and outlet pipes are connected to the guide grooves and confluence grooves of the inlet and outlet guide plates, respectively, and are located on both sides of the core; the internal threaded holes of the inlet and outlet joints are connected to the cavities of the inlet and outlet pipes. However, the above-mentioned products and similar products are larger in size, higher in power, higher in cost, and have poor circulation flow heat dissipation effects. Summary of the invention

[0003] In order to overcome the above shortcomings, the purpose of the utility model is to provide a multi-layer structure heat exchanger in the art, so as to solve the technical problems of the existing similar products, such as large volume, high power, high cost, and poor circulation flow heat dissipation effect. The purpose is achieved through the following technical solutions.

[0004] A multi-layer heat exchanger, the main body of which is a liquid cooling plate; the key points of its structural design are that an upper cover plate is provided at the notch of the upper liquid cooling cavity groove at the top of the channel body of the liquid cooling plate, and a lower cover plate is provided at the notch of the lower liquid cooling cavity groove at the bottom of the channel body, and coolant is respectively provided in the upper liquid cooling cavity groove and the lower liquid cooling cavity groove of the channel body, the upper liquid cooling cavity groove of the channel body is an upper internal flow channel groove area, and the lower liquid cooling cavity groove of the channel body is a lower internal flow channel groove area, a connecting channel is provided between the upper internal flow channel groove area and the lower internal flow channel groove area in the channel body, and a middle partition plate between the upper internal flow channel groove area and the lower internal flow channel groove area of ​​the channel body separates the two layers of flow channels, and the two layers of flow channel groove areas are connected through the connecting channel. The liquid cooling plate of the heat exchanger is constructed by arranging upper and lower layers of liquid cooling internal flow channel grooves on a channel body. The upper and lower internal flow channel grooves are connected, and the heat source modules are arranged on the upper and lower surfaces of the body according to actual needs. It not only reduces the volume of the liquid cooling plate and improves the heat dissipation efficiency, but also reduces the cost. It is flexible and convenient and suitable for large-scale promotion.

[0005] A liquid inlet is provided on one side of the outer diameter of the upper inner flow channel area of ​​the channel body, and a liquid outlet is provided on one side of the outer diameter of the lower inner flow channel area of ​​the channel body. Thus, the coolant in the channel body flows into the flow channel of the upper inner flow channel area through the liquid inlet, taking away the heat of the upper heat source, and then flows into the flow channel of the lower inner flow channel area through the connecting channel, taking away the heat of the lower heat source, and then flows out of the liquid cooling plate through the liquid outlet, and the circulation is repeated. The above-mentioned liquid outlet and liquid inlet are respectively provided with a liquid outlet pipe and a liquid inlet pipe, and the liquid outlet pipe and the liquid inlet pipe are respectively welded to the channel body in an integrated manner.

[0006] The flow channels in the upper inner flow channel area and the lower inner flow channel area of ​​the channel body are respectively provided with series one-way flow channels or parallel flow channels. The flow channel structure is formed by a single structure channel or buried pipe.

[0007] Fins or turbulent flow devices are respectively arranged in the series one-way flow channels or the parallel flow channels at the flow channels in the upper inner flow channel region and the lower inner flow channel region of the channel body.

[0008] The top of the channel body is provided with an upper heat source, and the bottom of the channel body is symmetrically provided with a first heat source and a second heat source. The above is a structural embodiment of a specific heat source arrangement.

[0009] The utility model has reasonable structural design, low production cost, diverse structural forms, fast heat conduction speed, good heat dissipation effect, convenient production and installation, and small size; it is suitable for use as a liquid cooling plate of a multi-layer structure heat exchanger and a further improvement of similar products. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a schematic diagram of the explosion structure of an embodiment of the utility model.

[0011] Figure 2 yes Figure 1 Schematic diagram of the left-side structure after assembly, with AA section view made in the figure.

[0012] Figure 3 yes Figure 2 AA cross-sectional structure schematic diagram.

[0013] Figure 4 yes Figure 1 Schematic diagram of the three-dimensional structure.

[0014] Serial numbers and names of the accompanying drawings: 1. Channel body, 101. Upper internal flow channel channel area, 102. Lower internal flow channel channel area, 103. Connecting channel, 2. Upper cover plate, 3. Lower cover plate, 4. Liquid inlet, 5. Liquid outlet, 6. Upper heat source, 7. First heat source, 8. Second heat source. Implementation

[0015] Now, in conjunction with the accompanying drawings, the structure and use of the utility model are further described. Figure 1-Figure 4 As shown, the liquid cooling plate of the heat exchanger comprises a channel body 1, an upper cover plate 2, a lower cover plate 3, a liquid inlet 4 and a liquid outlet 5; the channel body 1, the upper cover plate 2, the lower cover plate 3, the liquid inlet 4 and the liquid outlet 5 are welded together to form the multi-layer structure liquid cooling plate; the channel body 1 is divided into an upper internal flow channel groove area 101 and a lower internal flow channel groove area 102, and the middle partition separates the two layers of flow channels, and the two layers of flow channel groove areas are connected through a connecting channel 103; the upper internal flow channel groove area 101 and the lower internal flow channel groove area 102 are designed and customized according to actual heat dissipation requirements to meet the heat dissipation requirements; the flow channel groove can be a series unidirectional flow channel or a parallel parallel flow channel; the flow channel groove structure can be a single structure channel or a buried pipe, and fins or various turbulent flow devices are further placed in the flow channel groove to meet the heat dissipation requirements, which will not be repeated here.

[0016] The coolant in the heat exchanger flows into the flow channel groove of the upper internal flow channel area 101 through the liquid inlet 4, takes away the heat of the heat source 6, and then flows into the flow channel groove of the lower internal flow channel area 102 through the connecting channel 103, takes away the heat of the heat sources 7 and 8, and then flows out of the liquid cooling plate through the liquid outlet 5, and the cycle repeats. The liquid cooling plate of the heat exchanger not only meets the heat dissipation requirements and improves the heat dissipation efficiency, but also has a compact structure, suitable size, reduced cost, flexible and convenient matching, and is suitable for mass promotion.

[0017] The above content is intended to illustrate the technical means of the utility model, and does not limit the technical scope of the utility model. Those skilled in the art can make obvious improvements or replacements to the utility model in combination with existing common knowledge, such as changing the setting mode and size of the heat source, or adding some fins and other heat sinks to the outer diameter of the liquid cooling plate as needed. The above heat source is mainly used for further conduction of the heat source at the liquid cooling plate. The heat source can be a transmission part or a device component that needs to dissipate heat, which also falls within the protection scope of the claims of the utility model.

Claims

1. A multi-layer heat exchanger, the main body of which is a liquid cooling plate; characterized in that An upper cover plate (2) is provided at the groove opening of the upper liquid cooling cavity groove at the top of the groove body (1) of the liquid cooling plate, and a lower cover plate (3) is provided at the groove opening of the lower liquid cooling cavity groove at the bottom of the groove body. Coolants are respectively provided in the upper liquid cooling cavity groove and the lower liquid cooling cavity groove of the groove body. The upper liquid cooling cavity groove of the groove body is an upper internal flow channel groove area (101), and the lower liquid cooling cavity groove of the groove body is a lower internal flow channel groove area (102). A connecting channel (103) is provided between the upper internal flow channel groove area and the lower internal flow channel groove area in the groove body. A partition plate is provided between the upper internal flow channel groove area and the lower internal flow channel groove area of ​​the groove body to separate the two layers of flow channels, and the two layers of flow channel groove areas are connected through the connecting channel.

2. The multilayer heat exchanger according to claim 1, characterized in that A liquid inlet (4) is provided on one side of the outer diameter of the upper inner flow channel region (101) of the channel body (1), and a liquid outlet (5) is provided on one side of the outer diameter of the lower inner flow channel region (102) of the channel body.

3. The multilayer heat exchanger according to claim 1, characterized in that The flow channels in the upper internal flow channel region (101) and the lower internal flow channel region (102) of the channel body (1) are respectively provided with series unidirectional flow channels or parallel flow channels.

4. The multilayer heat exchanger according to claim 3, characterized in that Fins or turbulent flow devices are respectively provided in the series unidirectional flow channels or parallel flow channels in the flow channels of the upper internal flow channel region (101) and the lower internal flow channel region (102) of the channel body (1).

5. The multi-layer heat exchanger according to claim 1, characterized in that An upper heat source (6) is provided at the top of the channel body (1), and a first heat source (7) and a second heat source (8) are symmetrically provided at the bottom of the channel body.

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