Chip cooling system and control method thereof

Abstract

The invention relates to the technical field of chip cooling, in particular to a chip cooling system which comprises a chip cabin used for containing a chip, a condensation barrel communicated with the chip cabin and a pressure sensor arranged on the chip cabin, and the condensation barrel is used for providing a refrigerant for the chip cabin. When the chip is cooled, a refrigerant is led to the chip cabin from the condensation barrel, and after the chip is cooled in the chip cabin, the refrigerant is led to the condensation barrel from the chip cabin to form circulation. Due to the fact that the refrigerant is adopted for cooling and heat dissipation of the chip, compared with air, the specific heat capacity is higher, the needed energy consumption is low, and the heat dissipation efficiency of the chip is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of chip cooling, and in particular to a chip cooling system and a control method thereof. Background Art

[0002] In recent years, the computing requirements of chips have become increasingly larger, and the construction of data centers has become increasingly larger, resulting in a large amount of electricity demand. Chip heat dissipation usually requires mechanical refrigeration to provide cooling capacity. The most common method is air cooling. The main process of air cooling is that the air conditioner provides cold air to the computer room. The server inhales cold air and discharges hot air. The hot air returns to the air conditioner to form cold air, and the cycle continues. Due to the low heat transfer coefficient and small specific heat capacity of air, the required air temperature is relatively low and the air volume is large. The energy consumption required for air cooling is high, and the heat dissipation efficiency of the chip is low. Summary of the invention

[0003] Based on the above-mentioned prior art, one of the purposes of the embodiments of the present invention is to provide a chip cooling system.

[0004] The technical solution adopted by the present invention to solve the technical problem is: to provide a chip cooling system, comprising:

[0005] A chip chamber, the chip chamber is used to place the chip, the chip chamber is provided with an inlet pipe and an outlet pipe, the inlet pipe is provided with an inlet valve, the outlet pipe is provided with an outlet valve, and the inlet valve and the outlet valve are both used for shutoff;

[0006] A condensing barrel, the condensing barrel is used to provide refrigerant to the chip compartment, the outlet of the condensing barrel is connected to the inlet pipe, the inlet of the condensing barrel is connected to the outlet pipe, and a condensing coil is arranged in the condensing barrel;

[0007] A pressure sensor is disposed on the chip chamber and is used to measure the pressure in the chip chamber.

[0008] Furthermore, the chip cooling system also includes a vacuum pump, a recovery machine and an N2 bottle. The inlet pipe is provided with a refrigerant recovery valve and a connecting pipe. The outlet pipe is connected to the vacuum pump, the recovery machine and the N2 bottle respectively through the connecting pipe. The refrigerant recovery valve is used to shut off the outlet pipe and the connecting pipe. A shut-off valve 1 is provided at the inlet of the vacuum pump, a shut-off valve 2 is provided at the inlet of the recovery machine, the recovery machine is used to recover the refrigerant, a shut-off valve 3 is provided at the inlet of the N2 bottle, and the outlet of the recovery machine and the condensation barrel are connected to each other.

[0009] Furthermore, the condensation barrel is connected to a non-condensable gas exhaust device, and the non-condensable gas exhaust device is used to exhaust the non-condensable gas.

[0010] Furthermore, the chip chamber includes a plurality of independent chambers, and the inlet pipe, the outlet pipe, the inlet valve and the outlet valve are each provided with a plurality, and each of the independent chambers corresponds to one inlet pipe, the outlet pipe, the inlet valve and the outlet valve.

[0011] Furthermore, the chip chamber is provided with a plurality of sub-chambers, each of the sub-chambers is provided with an inlet branch pipe and an outlet branch pipe, each of the inlet branch pipes is interconnected with the inlet pipe, and each of the outlet branch pipes is interconnected with the outlet branch pipes.

[0012] Based on the technical problems existing in the above-mentioned prior art, a second object of the embodiment of the present invention is to provide a control method for controlling the chip cooling system provided by any of the above-mentioned solutions.

[0013] To achieve the above-mentioned purpose, the technical solution adopted by the present invention to solve the technical problem is: to provide a chip cooling system control method, the method includes a liquid supply mode, a refrigerant recovery mode, a vacuum mode and an N2 addition mode. When the chip cooling system is in a normal working state, the chip cooling system is in the liquid supply mode; when the chip cooling system is in a maintenance state, the chip cooling system sequentially performs the refrigerant recovery mode, the vacuum mode and the N2 addition mode:

[0014] The liquid supply mode includes opening the inlet valve and the outlet valve so that the refrigerant in the condensing barrel flows into the chip compartment, the shut-off valve 1, the shut-off valve 2 and the shut-off valve 3 are all kept in a shut-off state, and the non-condensable gas exhaust device is kept in a working state;

[0015] The refrigerant recovery mode includes: opening the refrigerant recovery valve and the shut-off valve 2, so that the recovery machine is turned on and recycles the refrigerant in the chip compartment, and the inlet valve, the outlet valve, the shut-off valve 1, and the shut-off valve 3 are all in the shut-off state;

[0016] The vacuuming mode includes: opening the vacuum pump and the shutoff valve 1 in sequence, so that the vacuum pump evacuates the chip chamber, and the inlet valve, the outlet valve, the refrigerant recovery valve, the shutoff valve 2 and the shutoff valve 3 are all in the shutoff state;

[0017] The N2 adding mode includes: opening the shut-off valve three, so that the N2 bottle and the chip compartment are connected through the connecting pipe, the N2 in the N2 bottle flows into the chip compartment, and the inlet valve, the outlet valve, the refrigerant recovery valve, the shut-off valve one, and the shut-off valve two are all in the shut-off state.

[0018] Furthermore, in the liquid supply mode, the outlet valve is in a fully open state, and the opening of the inlet valve is adjusted according to the data displayed by the pressure sensor.

[0019] Furthermore, in the liquid supply mode, the outlet valve is in a fully open state, and the inlet valve adjusts its opening according to the heat dissipation of the chip.

[0020] Furthermore, in the refrigerant recovery mode, when the absolute pressure of the chip chamber is lower than X, the range of X is 1-10 kPA, the shut-off valve 2 is in the shut-off state, and the recovery machine is turned off.

[0021] Furthermore, in the vacuum mode, when the absolute pressure of the chip chamber is lower than X, the range of X is 1-10 kPA, and the shut-off valve is in a shut-off state.

[0022] The beneficial effect of the present invention is: providing a chip cooling system, including a chip compartment for placing a chip, a condensing barrel connected to the chip compartment, and a pressure sensor arranged on the chip compartment, the condensing barrel is used to provide refrigerant to the chip compartment. When cooling the chip, the refrigerant flows from the condensing barrel to the chip compartment, and after the chip is cooled in the chip compartment, a cycle is formed from the chip compartment to the condensing barrel. Since the refrigerant is used for cooling and dissipating the heat of the chip in the present invention, compared with air, the specific heat capacity is higher, the energy consumption required is lower, and the heat dissipation efficiency of the chip is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0024] In the figure: Figure 1 An overall structural diagram of a chip cooling system provided by the present invention;

[0025] Figure 2 This is an overall structural diagram of a chip cooling system provided in another embodiment of the present invention;

[0026] Description of reference numerals:

[0027] 100. Chip cooling system; 20. Chip compartment; 21. Inlet pipe; 211. Inlet valve; 212. Refrigerant recovery valve; 213. Connecting pipe; 22. Outlet pipe; 221. Outlet valve; 23. Independent compartment; 24. Sub-compartment; 241. Inlet branch pipe; 242. Outlet branch pipe; 30. Condensate drum; 31. Condensate coil; 32. Non-condensable gas exhaust device; 40. Pressure sensor; 50. Vacuum pump; 51. Shut-off valve one; 60. Recovery machine; 61. Shut-off valve two; 70. N2 bottle; 71. Shut-off valve three. DETAILED DESCRIPTION

[0028] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention clearer, the present invention is now described in detail in conjunction with the accompanying drawings. This figure is a simplified schematic diagram, which only illustrates the basics of the present invention in an illustrative manner, so it only shows the composition related to the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0029] Please refer to Figure 1 A chip cooling system 100 includes a chip chamber 20 in which a chip is placed, a condensation barrel 30 and a pressure sensor 40, as well as a vacuum pump 50, a recovery machine 60 and a N2 bottle 70. Specifically, in this embodiment, the chip is immersed in the chip chamber 20.

[0030] The chip chamber 20 is provided with an inlet pipe 21 and an outlet pipe 22. The inlet pipe 21 is provided with an inlet valve 211, and the outlet pipe 22 is provided with an outlet valve 221. The inlet valve 211 and the outlet valve 221 are both used for shutoff. Specifically, in this embodiment, the inlet pipe 21 is located at the bottom of the chip chamber 20, and the outlet pipe 22 is located at the top of the chip chamber 20.

[0031] The condensing barrel 30 is used to provide refrigerant to the chip chamber 20. The outlet of the condensing barrel 30 is connected to the inlet pipe 21, and the inlet of the condensing barrel 30 is connected to the outlet pipe 22. A condensing coil 31 is provided in the condensing barrel 30. Specifically, in this embodiment, cooling water is placed in the condensing coil 31.

[0032] The pressure sensor 40 is disposed on the chip chamber 20 , and is used to measure the pressure in the chip chamber 20 . Specifically, in this embodiment, the pressure sensor 40 is fixedly disposed on the outlet pipe 22 of the chip chamber 20 .

[0033] The inlet pipe 21 is provided with a refrigerant recovery valve 212 and a connecting pipe 213. The inlet pipe 21 is connected to the vacuum pump 50, the recovery machine 60 and the N2 bottle 70 through the connecting pipe 213. The refrigerant recovery valve 212 is used to shut off the outlet pipe 22 and the connecting pipe 213. A shut-off valve 1 51 is provided at the inlet of the vacuum pump 50, a shut-off valve 2 61 is provided at the inlet of the recovery machine 60, and a shut-off valve 3 71 is provided at the inlet of the N2 bottle 70. The outlet of the recovery machine 60 and the condensation barrel 30 are connected to each other. Specifically, in this embodiment, the connection point between the connecting pipe 213 and the inlet pipe 21 is closer to the chip chamber 20 than the inlet valve 211, so that when the inlet valve 211 is closed, the connection between the inlet pipe 21 and the vacuum pump 50, the recovery machine 60 and the N2 bottle 70 is not affected.

[0034] by Figure 1Taking the intersection of an inlet pipe 21 indicated by a solid circle and a pipeline for connecting the refrigerant recovery valve 212 of each chip chamber 20 and the vacuum pump 50, the recovery machine 60 and the N2 bottle 70 as an example, the intersection of each inlet pipe 21 and the pipeline shown in the figure does not mean that the inlet pipe 21 and the pipeline are connected to each other. During actual installation, a bridge is provided between each inlet pipe 21 and the pipeline.

[0035] The condensation barrel 30 is connected to a non-condensable gas discharge device 32, which is used to discharge non-condensable gas to prevent the non-condensable gas from affecting the condensation of the refrigerant. Specifically, in this embodiment, the non-condensable gas is a gas that cannot be condensed into a liquid, such as air, hydrogen, and nitrogen. The non-condensable gas discharge device 32 can be any non-condensable gas separator in the prior art that can achieve the non-condensable gas separation function, and the specific structure is not repeated in this embodiment.

[0036] The chip chamber 20 includes multiple independent chambers 23, each of which contains a chip. There are multiple inlet pipes 21, outlet pipes 22, inlet valves 211 and outlet valves 221, and each independent chamber 23 corresponds to an inlet pipe 21, outlet pipe 22, inlet valve 211 and outlet valve 221.

[0037] Please refer to Figure 2 In some other embodiments, a plurality of sub-chambers 24 are provided in the chip chamber 20, each sub-chamber 24 contains a chip, each sub-chamber 24 is provided with an inlet branch pipe 241 and an outlet branch pipe 242, each inlet branch pipe 241 is interconnected with the inlet pipe 21, and each outlet branch pipe 242 is interconnected with the outlet branch pipe 242.

[0038] When cooling the chip, the refrigerant flows from the condensation barrel 30 to the chip compartment 20, and after the chip is cooled in the chip compartment 20, a cycle is formed from the chip compartment 20 to the condensation barrel 30. Since the refrigerant is used to cool the chip in the present invention, compared with air, the specific heat capacity is higher, the energy consumption required is lower, and the heat dissipation efficiency of the chip is improved.

[0039] The embodiment of the present invention further provides a control method of a chip cooling system 100, which is used to control the chip cooling system 100 described in any of the above embodiments, and the method includes an initialization mode, a liquid supply mode, a refrigerant recovery mode, a vacuum mode, and an N2 addition mode. When used for the first time, the chip cooling system 100 first performs the initialization mode, and then switches from the initialization mode to the liquid supply mode; when the chip cooling system 100 is in a normal working state, the chip cooling system 100 is in the liquid supply mode; when the chip cooling system 100 is in a maintenance state, the chip cooling system 100 sequentially performs the refrigerant recovery mode, the vacuum mode, and the N2 addition mode.

[0040] The initialization mode includes the following steps:

[0041] First close the door of the chip chamber 20, first make the inlet valve 211, the outlet valve 221, and the refrigerant recovery valve 212 all in the closed state, open the vacuum pump 50 and the shut-off valve 1 51 in sequence, and then make the shut-off valve 1 51 in the open state, and the shut-off valve 2 61 and the shut-off valve 3 71 are both in the closed state. Evacuate the chip chamber 20. After the pressure sensor 40 measures that the vacuum pressure in the chip chamber 20 reaches 50PA, turn off the vacuum pump 50 and the shut-off valve 1 51, and check the pressure recovery rate in the chip chamber 20. If the pressure recovered in the chip chamber 20 is lower than 100Pa within 15 minutes, it is judged to be normal, otherwise an alarm is triggered;

[0042] After judging that it is normal, open the shut-off valve 51 and the vacuum pump 50, and evacuate the chip chamber 20. After the pressure sensor 40 measures the pressure in the chip chamber 20 to be 50Pa, close the vacuum pump 50 and the shut-off valve 51, and then slowly open the outlet valve 221 to replenish air into the chip chamber 20. After the pressure in the chip chamber 20 is balanced, open the inlet valve 211 and switch to the liquid supply mode.

[0043] The liquid supply mode includes opening the inlet valve 211 and the outlet valve 221, so that the refrigerant in the condensation barrel 30 flows into the chip compartment 20, the shut-off valve 1 51, the shut-off valve 2 61 and the shut-off valve 3 71 are all kept in a closed state, and the non-condensable gas exhaust device is kept in a working state;

[0044] Among them, in the liquid supply mode, the outlet valve 221 is in a fully open state, and the opening of the inlet valve 211 is adjusted according to the data displayed by the pressure sensor 40. Specifically, in this embodiment, when the pressure in the chip compartment 20 measured by the pressure sensor 40 is lower, the opening of the inlet valve 211 is smaller; when the pressure in the chip compartment 20 measured by the pressure sensor 40 is higher, the opening of the inlet valve 211 is larger. By controlling the opening of the inlet valve 211 through the pressure value in the chip compartment 20, the amount of refrigerant entering the chip compartment 20 can be adapted to the condition of the chip in the chip compartment 20, thereby reasonably allocating the amount of refrigerant and reducing the energy consumption of the chip cooling system 100.

[0045] In some of the embodiments, in the liquid supply mode, the outlet valve 221 is in a fully open state, and the opening of the inlet valve 211 can also be adjusted according to the heat dissipation of the chip. Specifically, in the present embodiment, the calorific value of the chip can be measured by setting a temperature sensor on the chip compartment 20 to measure the temperature inside the chip compartment 20 or by observing the power of the power supply device that supplies power to the chip. When the heat dissipation of the chip is lower, the opening of the inlet valve 211 is smaller; when the heat dissipation of the chip is higher, the opening of the inlet valve 211 is larger. By numerically controlling the opening of the inlet valve 211 through the heat dissipation value of the chip in the chip compartment 20, the amount of refrigerant introduced into the chip compartment 20 can be adapted to the condition of the chip in the chip compartment 20, thereby reasonably allocating the amount of refrigerant and reducing the energy consumption of the chip cooling system 100.

[0046] The refrigerant recovery mode includes: opening the refrigerant recovery valve 212 and the shut-off valve 2 61, so that the recovery machine 60 is turned on and the refrigerant in the chip chamber 20 is recovered, and the inlet valve 211, the outlet valve 221, the shut-off valve 1 51, and the shut-off valve 3 71 are all in the shut-off state;

[0047] When the absolute pressure of the chip chamber 20 is lower than X, the range of X is 1-10 kPA, and the shut-off valve 2 61 is in the shut-off state, that is, the recovery machine 60 is turned off.

[0048] The vacuuming mode includes: opening the vacuum pump 50 and the shutoff valve 1 51 in sequence, so that the vacuum pump 50 evacuates the chip chamber 20, and the inlet valve 211, the outlet valve 221, the refrigerant recovery valve 212, the shutoff valve 2 61 and the shutoff valve 3 71 are all in the shutoff state;

[0049] Among them, when the absolute pressure of the chip chamber 20 is lower than X, the range of X is 1-10kPA, and the shut-off valve 51 is in the shut-off state.

[0050] Adding the N2 mode includes: opening the shut-off valve three 71, so that the N2 bottle 70 and the chip chamber 20 are connected through the connecting pipe 213, and the N2 in the N2 bottle 70 flows into the chip chamber 20, and the inlet valve 211, the outlet valve 221, the refrigerant recovery valve 212, the shut-off valve one 51, and the shut-off valve two 61 are all in the shut-off state.

[0051] When the absolute pressure of the chip chamber 20 is equal to the atmospheric pressure, the shut-off valve 3 71 is closed and the N2 bottle 70 is closed.

Claims

1. A chip cooling system, characterized in that: include: A chip chamber, the chip chamber is used to place the chip, the chip chamber is provided with an inlet pipe and an outlet pipe, the inlet pipe is provided with an inlet valve, the outlet pipe is provided with an outlet valve, and the inlet valve and the outlet valve are both used for shutoff; A condensing barrel, the condensing barrel is used to provide refrigerant to the chip compartment, the outlet of the condensing barrel is connected to the inlet pipe, the inlet of the condensing barrel is connected to the outlet pipe, and a condensing coil is arranged in the condensing barrel; A pressure sensor is disposed on the chip chamber and is used to measure the pressure in the chip chamber.

2. The chip cooling system according to claim 1, characterized in that: The chip cooling system also includes a vacuum pump, a recovery machine and an N2 bottle. The inlet pipe is provided with a refrigerant recovery valve and a connecting pipe. The outlet pipe is connected to the vacuum pump, the recovery machine and the N2 bottle respectively through the connecting pipe. The refrigerant recovery valve is used to shut off the outlet pipe and the connecting pipe. A shut-off valve 1 is provided at the inlet of the vacuum pump, a shut-off valve 2 is provided at the inlet of the recovery machine, the recovery machine is used to recover the refrigerant, a shut-off valve 3 is provided at the inlet of the N2 bottle, and the outlet of the recovery machine and the condensation barrel are connected to each other.

3. The chip cooling system according to claim 1, characterized in that: The condensation barrel is connected to a non-condensable gas exhaust device, and the non-condensable gas exhaust device is used to exhaust the non-condensable gas.

4. The chip cooling system according to claim 3, characterized in that: The chip chamber includes a plurality of independent chambers, and a plurality of the inlet pipe, the outlet pipe, the inlet valve and the outlet valve are provided, and each of the independent chambers corresponds to one inlet pipe, the outlet pipe, the inlet valve and the outlet valve.

5. The chip cooling system according to claim 3, characterized in that: The chip chamber is provided with a plurality of sub-chambers, each of the sub-chambers is provided with an inlet branch pipe and an outlet branch pipe, each of the inlet branch pipes is interconnected with the inlet pipe, and each of the outlet branch pipes is interconnected with the outlet branch pipes.

6. A control method for a chip cooling system, characterized in that: Used to control the chip cooling system as described in any one of claims 1 to 5 above, the method includes a liquid supply mode, a refrigerant recovery mode, a vacuum mode and an N2 addition mode. When the chip cooling system is in a normal working state, the chip cooling system is in the liquid supply mode; when the chip cooling system is in a maintenance state, the chip cooling system sequentially performs the refrigerant recovery mode, the vacuum mode and the N2 addition mode: The liquid supply mode includes opening the inlet valve and the outlet valve so that the refrigerant in the condensing barrel flows into the chip compartment, the shut-off valve 1, the shut-off valve 2 and the shut-off valve 3 are all kept in a shut-off state, and the non-condensable gas exhaust device is kept in a working state; The refrigerant recovery mode includes: opening the refrigerant recovery valve and the shut-off valve 2, so that the recovery machine is turned on and recycles the refrigerant in the chip compartment, and the inlet valve, the outlet valve, the shut-off valve 1, and the shut-off valve 3 are all in the shut-off state; The vacuuming mode includes: opening the vacuum pump and the shutoff valve 1 in sequence, so that the vacuum pump evacuates the chip chamber, and the inlet valve, the outlet valve, the refrigerant recovery valve, the shutoff valve 2 and the shutoff valve 3 are all in the shutoff state; The N2 adding mode includes: opening the shut-off valve three, so that the N2 bottle and the chip compartment are connected through the connecting pipe, the N2 in the N2 bottle flows into the chip compartment, and the inlet valve, the outlet valve, the refrigerant recovery valve, the shut-off valve one, and the shut-off valve two are all in the shut-off state.

7. The control method of the chip cooling system according to claim 6, characterized in that: In the liquid supply mode, the outlet valve is in a fully open state, and the opening degree of the inlet valve is adjusted according to the data displayed by the pressure sensor.

8. The control method of the chip cooling system according to claim 6, characterized in that: In the liquid supply mode, the outlet valve is in a fully open state, and the inlet valve adjusts its opening according to the heat dissipation of the chip.

9. The control method of the chip cooling system according to claim 6, characterized in that: In the refrigerant recovery mode, when the absolute pressure of the chip chamber is lower than X, the range of X is 1-10kPA, the shut-off valve 2 is in the shut-off state, and the recovery machine is turned off.

10. The control method of the chip cooling system according to claim 6, characterized in that: In the vacuum mode, when the absolute pressure of the chip chamber is lower than X, the range of X is 1-10 kPA, and the shut-off valve is in the shut-off state.

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