Computer circulating cooling system

Abstract

The utility model discloses a computer circulating cooling system which comprises a working unit which directly or indirectly exchanges heat with a computer, and the working unit is provided with an input end and an output end, so that a heat exchange medium enters from the input end, exchanges heat with the computer and then is discharged from the output end. According to the system, convective heat exchange can be achieved through the heat exchanger and the cold plate or the liquid cooling case, temperature control over internal components of the cold plate or the liquid cooling case is achieved, the cold plate or the liquid cooling case is protected against the influence of high temperature, normal operation is achieved, the higher space utilization efficiency is achieved, the cold plate can be designed in an integrated and layout mode according to the position and number of computers, and the cost is reduced. And the method has higher expansibility.

Description

Technical Field

[0001] The utility model belongs to the technical field of computer-aided heat dissipation, in particular to a computer circulation cooling system. Background Art

[0002] A computer is a highly integrated system of electronic components. It generates heat during operation. Heat accumulation can cause local temperature rise, thus affecting the normal operation of the computer.

[0003] Chinese patent CN110461127A discloses a technology for heat dissipation of computers using air cooling, including an air conditioner outdoor unit, a centrifugal fan and a heat dissipation pipeline arranged in a computer room. The air conditioner outdoor unit, the centrifugal fan and the heat dissipation pipeline arranged in the computer room form a heat dissipation loop. The heat dissipation pipeline is arranged on the roof of the computer room. The heat dissipation pipeline includes a cold air pipe, a hot air pipe and a plurality of intermediate pipes connected between the cold air pipe and the hot air pipe. A normally closed air outlet valve is arranged on the heat dissipation pipeline. A mobile air supply device is arranged below the heat dissipation pipeline. The mobile air supply device can be moved to the air outlet valve and docked with the valve to introduce cold air into the mobile air supply device, and the cold air is blown separately to a designated server through a telescopic pipe and a supply fan arranged below the mobile air supply device.

[0004] The air cooling method can no longer fully meet the heat dissipation needs of computers in the computer room.

[0005] Chinese patent CN220156942U discloses a technology for computer heat dissipation using water cooling, including a computer room, an air cooling component and a circulating cooling component; the cooling circulation component includes a return pipe connected to the bottom of the computer room, the return pipe is connected to a circulating pipe through a circulating pump, the circulating pipe is connected to the upper half of the computer room, and a liquid inlet pipe is provided on the circulating pipe; a bridge plate and a liquid outlet pipe are provided inside the computer room, and the height of the liquid outlet pipe is lower than the bridge plate.

[0006] The heat dissipation technology mainly based on liquid cooling has higher heat dissipation efficiency, but this immersion liquid cooling technology requires a larger space and is more suitable for the heat dissipation protection of a single computer. It has poor scalability and cannot achieve an environmentally integrated layout. Utility Model Content

[0007] This application proposes a computer circulation cooling system to solve the above technical problems. The specific technical solutions are as follows:

[0008] The computer circulation cooling system comprises a working unit which directly or indirectly exchanges heat with the computer. The working unit has an input end and an output end so that the heat exchange medium enters from the input end to exchange heat with the computer and then is discharged from the output end.

[0009] In a technical solution, the input end of the working unit is externally connected to a heat exchange medium in a low temperature state.

[0010] In one technical solution, a circulation loop is connected between the input end and the output end of the working unit, and the circulation loop includes a booster pump and a heat exchanger connected in sequence. The output end of the heat exchanger is connected to the input end of the working unit, and the output end of the working unit is connected to the input end of the booster pump. The heat exchange medium after heat exchange is input into the heat exchanger by the booster pump to cool down and then input into the working unit.

[0011] Furthermore, a filter is connected in series in the circulation loop, and the filter is arranged at the output end of the heat exchanger.

[0012] Furthermore, the input end of the boost pump is connected to a cooling auxiliary water tank through a branch, and the cooling auxiliary water tank replenishes cooling medium and balances air pressure in the circulation loop.

[0013] Furthermore, the circulating cooling system also includes a heat exchange unit for cooling the heat exchange medium in the heat exchanger.

[0014] In a technical solution, the heat exchange unit is a liquid exchange water tank, at least a portion of the heat exchanger is accommodated in the liquid exchange water tank, and the liquid exchange water tank has a liquid inlet port and a liquid outlet port.

[0015] In one technical solution, the heat exchange unit is a direct cooling circuit, including a gas-liquid separator, a compressor, a condenser, a liquid storage dryer and an expansion valve connected in sequence, and the heat exchanger has two channels that are isolated from each other and connected to the direct cooling circuit and the circulation circuit respectively.

[0016] Furthermore, the circulation loop is also provided with a one-way valve, and / or a stop valve, and / or a liquid cooling joint, and / or a shut-off valve.

[0017] Furthermore, when the number of working units is greater than one, a liquid distributor is provided at the front end of the working unit and a liquid collector is provided at the rear end, and the working units between the liquid distributor and the liquid collector are provided in parallel.

[0018] The beneficial effects of the utility model are:

[0019] (1) The system can achieve temperature control of components inside the cold plate or liquid cooling chassis through convection heat exchange with the heat exchanger and the cold plate or liquid cooling chassis, thereby protecting the cold plate or liquid cooling chassis from high temperature and ensuring normal operation. It has higher space utilization efficiency, and the cold plate can be integrated and laid out according to the location and number of computers, which has stronger scalability.

[0020] (2) The system can realize the heat exchange between the system and the external cold source without considering the cold source medium;

[0021] (3) The system can protect one to multiple cold plates or liquid-cooled chassis by increasing the number of heat exchangers;

[0022] (4) The system can achieve heat dissipation protection functions in different environments by customizing the liquid exchange tank and heat exchanger to achieve different heat exchange amounts caused by different heat generation of the heat exchanger, cold plate or liquid cooling chassis, and different material requirements of low-temperature liquid in different environments. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 What is shown is a schematic diagram of the framework structure of the circulating cooling system in Example 1;

[0024] Figure 2 What is shown is a schematic diagram of the framework structure of the circulating cooling system in Example 2;

[0025] Figure 3 What is shown is a schematic diagram of the framework structure of the circulating cooling system in Example 3. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solution and advantages of the embodiments of the present utility model clearer, the technical solution of the present utility model will be clearly and completely described below in conjunction with the embodiments.

[0027] Example 1

[0028] This embodiment provides a circulating cooling system. Figure 1 What is shown is a schematic diagram of the framework structure of the circulating cooling system, which includes a circulating loop 10, a heat exchange unit 20 and a working unit 30, wherein the working unit 30 is connected in series in the circulating loop 10, and the circulating loop 10 allows the internal heat exchange medium to enter the working unit 30 in a low-temperature state, and inputs the high-temperature heat exchange medium output by the working unit 30 into the heat exchange unit 20 to cool it to a low-temperature state, and repeats this process.

[0029] In some specific implementations, the working unit 30 is a cold plate, which is applied to the outside or inside of a chassis of a computer host to remove the heat of the chassis of the computer host through heat exchange.

[0030] In other specific implementations, the working unit 30 is a liquid cooling chassis, and a heat exchange medium in a low temperature state is directly input into the liquid cooling chassis through the circulation loop 10 to cool and dissipate heat.

[0031] The circulation loop 10 includes a heat exchanger 11 and a booster pump 12. The heat exchanger 11, the working unit 30 and the booster pump 12 are connected in sequence to form a loop. The booster pump 12 provides circulation power for the heat exchange medium, so that the heat exchange medium enters the heat exchanger 11 for heat exchange and cooling and is then transported to the working unit 30.

[0032] As an exemplary description recorded in this embodiment, the heat exchanger 11 uses a tubular heat exchanger, but it is not the only limitation. Other types or forms of equipment that can achieve heat exchange, such as a plate heat exchanger, can also be used.

[0033] Correspondingly, a heat exchange unit 20 is provided to cooperate with the heat exchanger 11 to exchange heat and cool down the high-temperature heat exchange medium entering the heat exchanger 11; as recorded in this embodiment, the heat exchange unit 20 is a liquid exchange water tank, and at least a portion of the heat exchanger 11 is accommodated in the liquid exchange water tank. At the same time, a liquid inlet port 20a and a liquid outlet port 20b need to be provided on the liquid exchange water tank. The liquid inlet port 20a replenishes low-temperature liquid in the liquid exchange water tank to exchange heat with the heat exchanger 11, thereby cooling the heat exchange medium in the tubular heat exchanger, and the high-temperature liquid after heat exchange is discharged from the heat exchange water tank through the liquid outlet port 20b.

[0034] When the number of working units 30 exceeds one, a liquid separator 12a needs to be added at the front end of the working unit 30, and a liquid collector 12b needs to be added at the rear end of the working unit 30. The working units 30 between the liquid separator 12a and the liquid collector 12b are arranged in parallel, so that the low-temperature cooling medium is divided into several branches after passing through the liquid separator 12a and enters the working unit 30, and then the high-temperature cooling medium of several branches is combined into one by the liquid collector 12b and transported to the heat exchanger 11.

[0035] The "front end" and "rear end" recorded above are relative directions determined based on the flow direction of the cooling medium, wherein the "front end" of the working unit 30 is the inflow end of the cooling medium, and the "rear end" of the working unit 30 is the inflow end of the cooling medium.

[0036] The output end of the heat exchanger 11 is also connected to a filter 13 , and the filter 13 is used to filter impurities carried in the cooling medium coming out of the heat exchanger 11 . The impurities are usually formed by the cooling medium circulating in the circulation loop 10 .

[0037] In addition, optionally, the circulation loop 10 can also be provided with a one-way valve 14, a stop valve 15, a liquid cooling joint 16 and a shut-off valve 18, and the one-way valve 14, the stop valve 15, the liquid cooling joint 16 and the shut-off valve 18 can all be separately arranged at the front end and the rear end of the working unit 30.

[0038] As a recording method of this embodiment, a one-way valve 14a and a liquid cooling joint 16a are provided at the front end of the liquid separator 12a, and the one-way valve 14a, the liquid cooling joint 16a and the liquid separator 12a are connected in sequence, and the one-way valve 14a allows the cooling medium to flow from the filter 13 to the liquid cooling joint 16a; the rear end of the liquid collector 12b is connected in sequence to the liquid cooling joint 16b, the one-way valve 14b and the stop valve 15, and the one-way valve 14b allows the cooling medium to flow from the liquid cooling joint 16b to the stop valve 15.

[0039] The input port of the boost pump 12 is also provided with a branch and a cooling auxiliary water tank 17 connected to the branch. Since the cooling medium expands and vaporizes after absorbing heat, the cooling auxiliary water tank 1 can replenish the cooling medium according to the flow rate of the cooling medium inside the circulation loop 10, and exhaust according to the air pressure in the pipeline.

[0040] The system is also equipped with an integrated controller to control the electronic components in the system to ensure the normal operation of the system.

[0041] Example 2

[0042] This embodiment provides a circulating cooling system. Figure 2 What is shown is a schematic diagram of the framework structure of the circulating cooling system, including a circulating loop 10, a direct cooling loop 40 and a working unit 30, wherein the working unit 30 is connected in series in the circulating loop 10, and the circulating loop 10 allows the internal heat exchange medium to enter the working unit 30 in a low-temperature state, and inputs the high-temperature heat exchange medium output by the working unit 30 into the heat exchange unit 20 to cool it to a low-temperature state, and repeats this process.

[0043] In some specific implementations, the working unit 30 is a cold plate, which is applied to the outside or inside of a chassis of a computer host to remove the heat of the chassis of the computer host through heat exchange.

[0044] In other specific implementations, the working unit 30 is a liquid cooling chassis, and a heat exchange medium in a low temperature state is directly input into the liquid cooling chassis through the circulation loop 10 to cool and dissipate heat.

[0045] The circulation loop 10 includes a heat exchanger 11 and a booster pump 12. The heat exchanger 11, the working unit 30 and the booster pump 12 are connected in sequence to form a loop. The booster pump 12 provides circulation power for the heat exchange medium, so that the heat exchange medium enters the heat exchanger 11 for heat exchange and cooling and is then transported to the working unit 30.

[0046] As an exemplary description recorded in this embodiment, the heat exchanger 11 uses a plate heat exchanger, but it is not the only limitation. Other types or forms of equipment that can achieve heat exchange, such as a tube heat exchanger, can also be used.

[0047] Accordingly, a direct cooling circuit 40 is provided to cooperate with the heat exchanger 11 to exchange heat and cool down the high-temperature heat exchange medium entering the heat exchanger 11 .

[0048] As recorded in this embodiment, the direct cooling circuit 40 includes a gas-liquid separator 41, a compressor 42, a condenser 43, a liquid storage dryer 44 and an expansion valve 45 which are connected in sequence. The gas-liquid separator 41 and the expansion valve 45 are both connected to the heat exchanger 11 to form a complete direct cooling circuit 40.

[0049] The plate heat exchanger selected as the heat exchanger 11 of this embodiment has two isolated channels, one of which is connected to the circulation loop 10, and the other is connected to the direct cooling loop 40; the refrigerant in the direct cooling loop 40 initially passes through the compressor 42 to form a high-temperature and high-pressure gas, and uses the external fan to form heat convection to take away the heat of the refrigerant to form a medium-temperature and high-pressure gas-liquid two-phase flow, and the refrigerant is stored in the liquid storage dryer 44, and then throttled and expanded by the expansion valve 45 to form a low-temperature and low-pressure gas-liquid two-phase, and heat exchange and heat absorption evaporation with the cooling medium in the circulation loop 10 are realized in the plate heat exchanger to form a high-temperature and low-pressure gas-liquid two-phase, and the refrigerant enters the gas-liquid separator 41 to realize gas-liquid separation, ensuring that it enters the compressor as pure gas, realizing the circulation of the direct cooling loop 40.

[0050] Since the amount of the refrigerant in the direct cooling loop 40 is greater than the amount required for operation, the refrigerant is stored in the liquid storage dryer 44 to ensure the amount of the refrigerant required by the direct cooling loop 40 .

[0051] When the number of working units 30 exceeds one, a liquid separator 12a needs to be added at the front end of the working unit 30, and a liquid collector 12b needs to be added at the rear end of the working unit 30. The working units 30 between the liquid separator 12a and the liquid collector 12b are arranged in parallel, so that the low-temperature cooling medium is divided into several branches after passing through the liquid separator 12a and enters the working unit 30, and then the high-temperature cooling medium of several branches is combined into one by the liquid collector 12b and transported to the heat exchanger 11.

[0052] The "front end" and "rear end" recorded above are relative directions determined based on the flow direction of the cooling medium, wherein the "front end" of the working unit 30 is the inflow end of the cooling medium, and the "rear end" of the working unit 30 is the inflow end of the cooling medium.

[0053] The output end of the heat exchanger 11 is also connected to a filter 13 , and the filter 13 is used to filter impurities carried in the cooling medium coming out of the heat exchanger 11 . The impurities are usually formed by the cooling medium circulating in the circulation loop 10 .

[0054] In addition, optionally, the circulation loop 10 can also be provided with a one-way valve 14, a stop valve 15, a liquid cooling joint 16, and a shut-off valve 18. The one-way valve 14, the stop valve 15, the liquid cooling joint 16 and the shut-off valve 18 can all be separately provided at the front end and the rear end of the working unit 30.

[0055] As a recording method of this embodiment, a one-way valve 14a is set at the front end of the liquid separator 12a, and the one-way valve 14a allows the cooling medium to flow from the filter 13 to the liquid separator 12a; the rear end of the liquid collector 12b is connected to the one-way valve 14b and the shut-off valve 18 in sequence, and the one-way valve 14b allows the cooling medium to flow from the liquid collector 12b to the shut-off valve 18.

[0056] The input port of the boost pump 12 is also provided with a branch and a cooling auxiliary water tank 17 connected to the branch. Since the cooling medium expands and vaporizes after absorbing heat, the cooling auxiliary water tank 1 can replenish the cooling medium according to the flow rate of the cooling medium inside the circulation loop 10, and exhaust according to the air pressure in the pipeline.

[0057] The system is also equipped with an integrated controller to control the electronic components in the system to ensure the normal operation of the system.

[0058] Example 3

[0059] For an environment that can provide a cooling liquid cooling source autonomously, this embodiment provides a circulating cooling system. Figure 3 What is shown is a schematic diagram of the framework structure of the circulating cooling system, including a working unit 30, which can be a cold plate or a liquid cooling chassis. The front end of the working unit 30 is connected to a heat exchange medium in a low-temperature state, and the rear end of the working unit 30 is connected to a heat exchange medium in a high-temperature state after heat exchange. Different from embodiments 1 and 2, in this embodiment, the heat exchange medium does not need to be provided by a circulating loop 10, but is directly provided by the external environment.

[0060] When the number of working units 30 exceeds one, a liquid separator 12a needs to be added at the front end of the working unit 30, and a liquid collector 12b needs to be added at the rear end of the working unit 30. The working units 30 between the liquid separator 12a and the liquid collector 12b are arranged in parallel, so that the low-temperature cooling medium is divided into several branches after passing through the liquid separator 12a and enters the working unit 30, and then the high-temperature cooling medium of the several branches is combined into one output by the liquid collector 12b.

[0061] The "front end" and "rear end" recorded above are relative directions determined based on the flow direction of the cooling medium, wherein the "front end" of the working unit 30 is the inflow end of the cooling medium, and the "rear end" of the working unit 30 is the inflow end of the cooling medium.

[0062] The front end of the liquid distributor 12a can be fed with a low-temperature cooling medium through the liquid cooling joint 16a; the rear end of the liquid collector 12b can discharge the high-temperature cooling medium after heat exchange through the liquid cooling joint 16b.

[0063] The above embodiments are only used to illustrate the technical solution of the present invention, but not to limit it.

Claims

1. Computer circulation cooling system, characterized in that: It includes a working unit that directly or indirectly exchanges heat with the computer, the working unit is a cold plate or a liquid cooling chassis, and the working unit has an input end and an output end so that the heat exchange medium enters from the input end to exchange heat with the computer and is discharged from the output end; A circulation loop is connected between the input end and the output end of the working unit, and the circulation loop includes a booster pump and a heat exchanger connected in sequence, the output end of the heat exchanger is connected to the input end of the working unit, and the output end of the working unit is connected to the input end of the booster pump, and the heat exchange medium after heat exchange is input into the heat exchanger by the booster pump to cool down and then input into the working unit; The input end of the booster pump is connected to the cooling auxiliary water tank through a branch, and the cooling auxiliary water tank replenishes cooling medium and balances air pressure in the circulation loop.

2. The computer circulation cooling system according to claim 1, characterized in that: The input end of the working unit is externally connected to a heat exchange medium in a low temperature state.

3. The computer circulation cooling system according to claim 1, characterized in that: A filter is also connected in series in the circulation loop, and the filter is arranged at the output end of the heat exchanger.

4. The computer circulation cooling system according to claim 1, characterized in that: The circulating cooling system also includes a heat exchange unit for cooling the heat exchange medium in the heat exchanger.

5. The computer circulation cooling system according to claim 4, characterized in that: The heat exchange unit is a liquid exchange water tank, at least a portion of the heat exchanger is accommodated in the liquid exchange water tank, and the liquid exchange water tank has a liquid inlet port and a liquid outlet port.

6. The computer circulation cooling system according to claim 5, characterized in that: The heat exchange unit is a direct cooling circuit, including a gas-liquid separator, a compressor, a condenser, a liquid storage dryer and an expansion valve connected in sequence. The heat exchanger has two channels that are isolated from each other and connected to the direct cooling circuit and the circulation circuit respectively.

7. The computer circulation cooling system according to any one of claims 1 to 6, characterized in that: The circulation loop is also provided with a one-way valve, and / or a stop valve, and / or a liquid cooling joint, and / or a shut-off valve.

8. The computer circulation cooling system according to any one of claims 1 to 6, characterized in that: When the number of working units is greater than one, a liquid distributor is arranged at the front end of the working unit and a liquid collector is arranged at the rear end, and the working units between the liquid distributor and the liquid collector are arranged in parallel.

Images