Negative pressure liquid cooling system

Abstract

The invention discloses a negative pressure liquid cooling system, and belongs to the technical field of liquid cooling heat dissipation of electronic equipment, the negative pressure liquid cooling system comprises a low negative pressure cavity, a high pressure cavity and a liquid supplementing and discharging module, the low negative pressure cavity is communicated with the high pressure cavity through a pump driving module, and the pump driving module is used for conveying cooling liquid from the low negative pressure cavity to the high pressure cavity; the liquid supplementing and discharging module is respectively communicated with the low negative pressure cavity and the high pressure cavity; a heat exchange module and a filtering module are further arranged between the pump driving module and the high-pressure cavity; the inlet end of the heat exchange module is communicated with the pump driving module, and the outlet end of the heat exchange module is communicated with the inlet end of the filtering module; the outlet end of the filtering module is communicated with the inlet end of the high-pressure cavity; the purification module is located between the heat exchange module and the high-pressure cavity and is connected with the filtering module in parallel. Fluid flows from the low-negative-pressure cavity to the high-pressure cavity through pump driving, stable flow or differential pressure output from the high-pressure cavity to the low-negative-pressure cavity is achieved, and a closed circulating system is formed.

Description

Technical Field

[0001] The present invention belongs to the technical field of liquid cooling and heat dissipation of electronic equipment, and in particular relates to a negative pressure liquid cooling system. Background Art

[0002] With the rapid development of the chip industry and the AI ​​field, server heat flux density is increasing. Air cooling technology has reached its limits for high-end chips and is approaching its limits for general-purpose chips. Liquid cooling technology is becoming the norm. The high computing power density required by AI servers has driven a strong and rapidly growing market demand for high-performance chip applications. Solving heat dissipation issues is fundamental to ensuring efficient chip performance. As chip performance improves, heat flux density is also increasing exponentially. Liquid cooling technology has become a cost-effective and efficient temperature control method. Currently, common liquid cooling technologies use a pump to drive a coolant (water, ethylene glycol, etc.) through channels on the surface or back of the heat-generating device. The coolant exchanges heat with the heat-generating device within the channel, removing heat and dissipating heat. The pipes or channels containing the medium are under positive pressure, meaning the pressure within the system is greater than the external atmospheric pressure. Defects such as trachoma or poor sealing in the system create the risk of coolant leakage and splashing. However, the widely used formulated coolants are conductive, which can cause fatal damage to high-value devices such as servers. Because the cooling fluid pressure in the negative pressure liquid cooling system is lower than the external atmospheric pressure, the coolant will not leak out when damage, sand holes, or poor sealing occur somewhere in the system. This solves the most serious risk point in the positive pressure liquid cooling system and has broad application prospects.

[0003] With the development of China's strategic West-to-East Power Transmission Project and the deployment of new energy power grids, liquid cooling technology for power electronic equipment has become popular. However, due to the high voltage characteristics of power equipment and the fact that currently commonly used liquid cooling technology operates under positive pressure conditions, the risks posed by leakage in the liquid cooling system are often more serious. Summary of the Invention

[0004] In order to solve the above problems, the present invention adopts the following technical solutions:

[0005] A negative pressure liquid cooling system, comprising:

[0006] A low negative pressure chamber, a high pressure chamber and a replenishment and drainage module, wherein the low negative pressure chamber is connected to the high pressure chamber via a pump drive module, and the pump drive module is used to transport the coolant from the low negative pressure chamber to the high pressure chamber; the replenishment and drainage module is respectively connected to the low negative pressure chamber and the high pressure chamber; a heat exchange module and a filter module are further provided between the pump drive module and the high pressure chamber; the inlet end of the heat exchange module is connected to the pump drive module, and the outlet end of the heat exchange module is connected to the inlet end of the filter module; the outlet end of the filter module is connected to the inlet end of the high pressure chamber;

[0007] A load module, wherein a liquid inlet of the load module is communicated with a liquid supply port of the high-pressure chamber, and a liquid outlet of the load module is communicated with a liquid return port of the low negative pressure chamber;

[0008] a purification module, the purification module being located between the heat exchange module and the load module;

[0009] a vacuum maintenance module, wherein the vacuum maintenance module has an air extraction side connected to the low negative pressure chamber, the high pressure chamber and the liquid replenishment and drainage module respectively;

[0010] a condenser module, wherein the water inlet of the condenser module is connected to the exhaust side of the vacuum maintenance module, and the water outlet of the condenser module is connected to the liquid inlet end of the liquid replenishment and drainage module;

[0011] A control unit is respectively connected to the low negative pressure chamber, the high pressure chamber, the liquid replenishment and drainage module, the pump drive module, the filtration module, the purification module, the load module, the vacuum maintenance module and the condenser module.

[0012] Furthermore, the pump drive module is built into the low negative pressure chamber and is located at the drainage interface of the low negative pressure chamber.

[0013] Furthermore, the heat exchange module is connected to the drainage interface of the low negative pressure chamber through a first pipeline, and the pump drive module is arranged on the first pipeline.

[0014] Furthermore, the heat exchange module is connected to the liquid inlet interface of the high-pressure chamber through a second pipe, and the purification module and the filtration module are arranged on the second pipe.

[0015] Furthermore, the heat exchange module is built into the high-pressure chamber and is located at the liquid inlet interface of the high-pressure chamber.

[0016] Furthermore, the filtration module includes a filter, at least one filter is provided, and the filter is installed in parallel between the heat exchange module and the high-pressure chamber.

[0017] Furthermore, the condenser module is connected to the exhaust side of the vacuum maintenance system, and the condensation reflux interface of the condenser module is connected to the liquid inlet end of the liquid replenishment and drainage module.

[0018] Furthermore, at least one of the pump drive module and the heat exchange module is provided.

[0019] Furthermore, the pump drive module and the heat exchange module are arranged in a one-to-one correspondence.

[0020] Furthermore, the pump drive modules and the heat exchange modules are arranged in a one-to-many or many-to-one manner.

[0021] Beneficial effects:

[0022] The present invention realizes that the system is in a negative pressure or local negative pressure state through a vacuum maintenance module, realizes the flow of fluid from the high-pressure chamber to the low-negative-pressure chamber by adjusting the pressure difference between the high and low negative-pressure chambers, and realizes the flow of fluid from the low-negative-pressure chamber to the high-pressure chamber through pump drive, realizes the stable pressure difference output from the high-pressure chamber to the low-negative-pressure chamber, and forms a closed circulation system. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the structure of the negative pressure liquid cooling system of the double negative pressure chamber of the present invention Figure 1 ;

[0024] Figure 2 This is a schematic diagram of the structure of the negative pressure liquid cooling system of the double negative pressure chamber of the present invention Figure 2 ;

[0025] Figure 3 This is a schematic diagram of the structure of the negative pressure liquid cooling system of the double negative pressure chamber of the present invention Figure 3 ;

[0026] Figure 4 This is a schematic diagram of the structure of the negative pressure liquid cooling system of the double negative pressure chamber of the present invention Figure 4 ;

[0027] Figure 5 This is a schematic diagram of the structure of the negative pressure liquid cooling system of the present invention with a single negative pressure chamber Figure 1 ;

[0028] Figure 6 This is a schematic diagram of the structure of the negative pressure liquid cooling system of the present invention with a single negative pressure chamber Figure 2 ;

[0029] Figure 7 This is a schematic diagram of the structure of the negative pressure liquid cooling system of the present invention with a single negative pressure chamber Figure 3 ;

[0030] Figure 8 This is a schematic diagram of the structure of the negative pressure liquid cooling system of the present invention with a single negative pressure chamber Figure 4 ;

[0031] Figure 9 This is a schematic diagram of the structure of the tube cavity integrated negative pressure liquid cooling system of the present invention Figure 1 ;

[0032] Figure 10 This is a schematic diagram of the structure of the tube cavity integrated negative pressure liquid cooling system of the present invention Figure 2 ;

[0033] Figure 11 This is a schematic diagram of the structure of the tube cavity integrated negative pressure liquid cooling system of the present invention Figure 3 ;

[0034] Figure 12 This is a schematic diagram of the structure of the n+1 configuration negative pressure liquid cooling system of the present invention;

[0035] Explanation of the accompanying drawings: 1. Low negative pressure chamber; 2. Pump drive module; 3. Heat exchange module; 4. Filtration module; 5. Purification module; 6. High pressure chamber; 7. Liquid replenishment and drainage module; 8. Load module; 9. Condenser module; 10. Vacuum maintenance module. DETAILED DESCRIPTION

[0036] This section will describe in detail the specific embodiments of the present invention. The preferred embodiments of the present invention are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present invention, but it should not be understood as a limitation on the scope of protection of the present invention.

[0037] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0038] In the description of the present invention, "several" means one or more, "many" means more than two, "greater than," "less than," and "exceed" are understood to exclude the number itself, while "above," "below," and "within" are understood to include the number itself. The use of "first" and "second" in the description is solely for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, implicitly specifying the number of the indicated technical features, or implicitly specifying the order of the indicated technical features.

[0039] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, and connecting should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0040] Example 1

[0041] A negative pressure liquid cooling system, comprising:

[0042] A low-negative-pressure chamber 1, a high-pressure chamber 6, and a liquid replenishment and drainage module 7. The low-negative-pressure chamber 1 is connected to the high-pressure chamber 6 through a pump-driven module 2. The pump-driven module 2 is used to transport the coolant from the low-negative-pressure chamber 1 to the high-pressure chamber 6. The liquid replenishment and drainage module 7 is connected to the low-negative-pressure chamber 1 and the high-pressure chamber 6, respectively. A heat exchange module 3 and a filter module 4 are further provided between the pump-driven module 2 and the high-pressure chamber 6. The inlet end of the heat exchange module 3 is connected to the pump-driven module 2, and the outlet end of the heat exchange module 3 is connected to the inlet end of the filter module 4. The outlet end of the filter module 4 is connected to the inlet end of the high-pressure chamber 6.

[0043] The load module 8 has a liquid inlet connected to the liquid supply port of the high-pressure chamber 6 and a liquid outlet connected to the liquid return port of the low-negative-pressure chamber 1;

[0044] Purification module 5, which is located between the heat exchange module 3 and the load module 8;

[0045] The vacuum maintaining module 10, the vacuum maintaining module 10 is connected to the low negative pressure chamber 1, the high pressure chamber 6 and the liquid replenishing and draining module 7 respectively;

[0046] Condenser module 9, the water inlet of the condenser module 9 is connected to the exhaust side of the vacuum maintenance module 10, and the water outlet of the condenser module 9 is connected to the liquid inlet end of the replenishment and drainage module 7;

[0047] The control unit is respectively connected to the low negative pressure chamber 1, the high pressure chamber 6, the liquid replenishment and drainage module 7, the pump drive module 2, the filtration module 4, the purification module 5, the load module 8, the vacuum maintenance module 10 and the condenser module 9.

[0048] In this embodiment, the purification module 5 and the filtration module 4 are installed in parallel.

[0049] In this embodiment, the pump drive module 2 is composed of a pump, a motor, a check valve, a pipeline assembly, a valve, etc.; in other embodiments, a filter may also be integrated into the pump drive module.

[0050] In this embodiment, the low negative pressure chamber 1 is composed of a cavity body, a functional valve, a vacuum interface, a drainage interface, a fluid replenishment interface, an external environment interface, etc.; the high pressure chamber is composed of a cavity body, a functional valve, an electric valve, a vacuum interface, a drainage interface, a fluid replenishment interface, an external environment interface, etc.

[0051] In this embodiment, the heat exchange module 3 is composed of a heat exchanger, a cold source and cold capacity condition module, etc. The heat exchanger includes but is not limited to a plate heat exchanger, an air-to-liquid heat exchanger, etc.

[0052] In this embodiment, the vacuum maintenance module 10 is composed of a vacuum pump, a vacuum monitoring system, a vacuum release valve, a functional valve, an electric valve, a self-drying component, and a vacuum pipe component. The vacuum pump can run intermittently or continuously for a long time according to system requirements.

[0053] In this embodiment, the condenser module 9 is composed of a condenser, a condensate filtering and cleaning component, a valve, etc.; the main purpose of the condenser module 9 is to save and recycle the coolant.

[0054] In this embodiment, the purification module 5 is composed of an ion exchange resin, a functional valve, an electric valve, a check valve, a flow meter and an isolation filter, a conductivity monitoring module, etc. The life of the purification module can be monitored through parameter monitoring to prompt the replacement of the purification module 5; the purification module 5 is a functional module specially designed for the application of pure water coolant.

[0055] In this embodiment, the control unit is composed of a PLC or a single chip microcomputer, a touch screen, low-voltage electrical components, sensors, etc.

[0056] In this embodiment, the high-pressure chamber 6 is connected to the load module 8 through a third pipe; the third pipe is provided with a thermometer and a pressure gauge interface, and may have a flow meter, conductivity, pH and other chemical sensor interfaces; the low negative pressure chamber 1 is connected to the load module 8 through a fourth pipe, and the fourth pipe has a pressure and temperature monitoring instrument, and may have a flow meter, conductivity, pH and other sensor interfaces.

[0057] In this embodiment, a bubble detection device is provided on the fourth pipe to detect whether leakage occurs during the circulation of the negative pressure liquid cooling system, whether air leakage occurs, and to issue an early warning of the amount of air leakage.

[0058] The interfaces between the low negative pressure chamber 1, the high pressure chamber 6 and the vacuum maintenance module 10 are located at the top, ensuring that air is extracted from the top of the tank to avoid sucking the liquid cooling medium into the vacuum pump; and a float valve mechanism can be configured to automatically close the vacuum system interface when the liquid level reaches the upper limit to prevent the coolant from entering the vacuum maintenance module 10.

[0059] In this embodiment, the low negative pressure chamber 1, the high pressure chamber 6, and the replenishment and drainage module 7 are connected to the vacuum pump module through the fifth pipe. The fifth pipe has parallel branch pipes connected to the three chambers respectively, and is connected to the main pipe of the vacuum pump. There is a pressure monitoring instrument and an electric valve on each of the three branches. A vacuum breaking valve is also provided on the top of the three chambers, which can be used to draw vacuum or release vacuum respectively; a vacuum pump module parallel interface is also provided on the fifth pipe. By connecting the parallel interface of the vacuum pump module on each device, the vacuum pump module can achieve a redundant backup effect at the physical level, and a redundant backup effect at the control level can be achieved through scheduling through group control.

[0060] In this embodiment, the low negative pressure chamber 1, the high pressure chamber 6, and the liquid replenishment and drainage module 7 are all provided with pressure detection and liquid level detection, which can realize automatic balance control of the liquid level.

[0061] Example 2

[0062] refer to Figure 1 This embodiment is further configured based on the embodiment 1, and this embodiment takes a double negative pressure chamber as an example.

[0063] Preferably, the pump drive module 2 is built into the low negative pressure chamber 1 and is located at the drainage interface of the low negative pressure chamber 1 .

[0064] In this embodiment, the pump drive module 2 is connected to the heat exchange module through a first pipeline; the first pipeline is provided with instrument interfaces such as a flow meter, a thermometer, a pressure gauge, and a filter.

[0065] Preferably, the heat exchange module 3 is connected to the liquid inlet interface of the high-pressure chamber 6 through a second pipeline, and the purification module 5 and the filtration module 4 are arranged on the second pipeline.

[0066] In this embodiment, the second pipeline is provided with a flow meter, a thermometer, a pressure gauge and other instrument interfaces and a filter.

[0067] Preferably, the filter module 4 includes a filter, at least one filter is provided, and the filter is installed in parallel between the heat exchange module and the high-pressure chamber.

[0068] In this embodiment, two filters are provided.

[0069] Preferably, at least one pump drive module 2 and at least one heat exchange module 3 are provided.

[0070] Preferably, the pump drive modules 2 and the heat exchange modules 3 are arranged in a one-to-many or many-to-one manner.

[0071] In this embodiment, there are two low-negative pressure chambers 1 and two pump-driven modules 2, and the two pump-driven modules 2 are respectively built into the two low-negative pressure chambers 1, and the two low-negative pressure chambers 1 are arranged in parallel; there is one heat exchange module 3.

[0072] Example 3

[0073] refer to Figure 2 This embodiment is further configured based on the embodiment 1, and this embodiment takes a double negative pressure chamber as an example.

[0074] Preferably, the pump drive module 2 is built into the low negative pressure chamber 1 and is located at the drainage interface of the low negative pressure chamber 1 .

[0075] In this embodiment, the pump drive module 2 is connected to the heat exchange module through a first pipeline; the first pipeline is provided with instrument interfaces such as a flow meter, a thermometer, a pressure gauge, and a filter.

[0076] Preferably, the heat exchange module 3 is connected to the liquid inlet interface of the high-pressure chamber 6 through a second pipeline, and the purification module 5 and the filtration module 4 are arranged on the second pipeline.

[0077] In this embodiment, the second pipeline is provided with a flow meter, a thermometer, a pressure gauge and other instrument interfaces and a filter.

[0078] Preferably, the filter module 4 includes a filter, at least one filter is provided, and the filter is installed in parallel between the heat exchange module and the high-pressure chamber.

[0079] In this embodiment, two filters are provided.

[0080] Preferably, at least one pump drive module 2 and at least one heat exchange module 3 are provided.

[0081] In this embodiment, there are two low negative pressure chambers 1, two heat exchange modules 3 and two pump drive modules 2. The two pump drive modules 2 are respectively built into the two low negative pressure chambers 1, and the two low negative pressure chambers 1 are arranged in parallel.

[0082] Preferably, the pump drive module 2 and the heat exchange module 3 are arranged in a one-to-one correspondence.

[0083] Example 4

[0084] refer to Figure 3 This embodiment is further configured based on the embodiment 1, and this embodiment takes a double negative pressure chamber as an example.

[0085] Preferably, the heat exchange module 3 is connected to the drainage interface of the low negative pressure chamber 1 through a first pipeline, and the pump drive module 2 is arranged on the first pipeline.

[0086] In this embodiment, the first pipeline is provided with instrument interfaces such as a flow meter, a thermometer, a pressure gauge, and a filter.

[0087] Preferably, the heat exchange module 3 is connected to the liquid inlet interface of the high-pressure chamber 6 through a second pipeline, and the purification module 5 and the filtration module 4 are arranged on the second pipeline.

[0088] In this embodiment, the second pipeline is provided with a flow meter, a thermometer, a pressure gauge and other instrument interfaces and a filter.

[0089] Preferably, the filter module 4 includes a filter, at least one filter is provided, and the filter is installed in parallel between the heat exchange module and the high-pressure chamber.

[0090] In this embodiment, two filters are provided.

[0091] Preferably, at least one pump drive module 2 and at least one heat exchange module 3 are provided.

[0092] Preferably, the pump drive modules 2 and the heat exchange modules 3 are arranged in a one-to-many or many-to-one manner.

[0093] In this embodiment, there are two low negative pressure chambers 1 and two pump drive modules 2, the two pump drive modules are respectively connected to the two low negative pressure chambers 1, and the two low negative pressure chambers are arranged in parallel; there is one heat exchange module.

[0094] Example 5

[0095] refer to Figure 4 This embodiment is further configured based on the embodiment 1, and this embodiment takes a double negative pressure chamber as an example.

[0096] Preferably, the heat exchange module 3 is connected to the drainage interface of the low negative pressure chamber 1 through a first pipeline, and the pump drive module 2 is arranged on the first pipeline.

[0097] In this embodiment, the first pipeline is provided with instrument interfaces such as a flow meter, a thermometer, a pressure gauge, and a filter.

[0098] Preferably, the heat exchange module 3 is connected to the liquid inlet interface of the high-pressure chamber 6 through a second pipeline, and the purification module 5 and the filtration module 4 are arranged on the second pipeline.

[0099] In this embodiment, the second pipeline is provided with a flow meter, a thermometer, a pressure gauge and other instrument interfaces and a filter.

[0100] Preferably, the filter module 4 includes a filter, at least one filter is provided, and the filter is installed in parallel between the heat exchange module and the high-pressure chamber.

[0101] In this embodiment, two filters are provided.

[0102] Preferably, at least one pump drive module 2 and at least one heat exchange module 3 are provided.

[0103] In this embodiment, there are two low-negative pressure chambers 1, two heat exchange modules 3 and two pump-driven modules 2, and the two pump-driven modules 2 are respectively connected to the two low-negative pressure chambers 1, and the two low-negative pressure chambers 1 and the pump-driven modules 2 are arranged in parallel.

[0104] Preferably, the pump drive module 2 and the heat exchange module 3 are arranged in a one-to-one correspondence.

[0105] Example 6

[0106] refer to Figure 5 This embodiment is further configured on the basis of the embodiment 1, and this embodiment takes a single negative pressure chamber as an example.

[0107] Preferably, the pump drive module 2 is built into the low negative pressure chamber 1 and is located at the drainage interface of the low negative pressure chamber 1 .

[0108] In this embodiment, the pump drive module 2 is connected to the heat exchange module through a first pipeline; the first pipeline is provided with instrument interfaces such as a flow meter, a thermometer, a pressure gauge, and a filter.

[0109] Preferably, the heat exchange module 3 is connected to the liquid inlet interface of the high-pressure chamber 6 through a second pipeline, and the purification module 5 and the filtration module 4 are arranged on the second pipeline.

[0110] In this embodiment, the second pipeline is provided with a flow meter, a thermometer, a pressure gauge and other instrument interfaces and a filter.

[0111] Preferably, the filter module 4 includes a filter, at least one filter is provided, and the filter is installed in parallel between the heat exchange module and the high-pressure chamber.

[0112] In this embodiment, two filters are provided.

[0113] Preferably, at least one pump drive module 2 and at least one heat exchange module 3 are provided.

[0114] Preferably, the pump drive modules 2 and the heat exchange modules 3 are arranged in a one-to-many or many-to-one manner.

[0115] In this embodiment, two pump drive modules 2 are provided, the two pump drive modules 2 are built in the low negative pressure chamber 1, and the two pump drive modules 2 are arranged in parallel; and one heat exchange module is provided.

[0116] Example 7

[0117] refer to Figure 6 This embodiment is further configured on the basis of the embodiment 1, and this embodiment takes a single negative pressure chamber as an example.

[0118] Preferably, the pump drive module 2 is built into the low negative pressure chamber 1 and is located at the drainage interface of the low negative pressure chamber 1 .

[0119] In this embodiment, the pump drive module 2 is connected to the heat exchange module through a first pipeline; the first pipeline is provided with instrument interfaces such as a flow meter, a thermometer, a pressure gauge, and a filter.

[0120] Preferably, the heat exchange module 3 is connected to the liquid inlet interface of the high-pressure chamber 6 through a second pipeline, and the purification module 5 and the filtration module 4 are arranged on the second pipeline.

[0121] In this embodiment, the second pipeline is provided with a flow meter, a thermometer, a pressure gauge and other instrument interfaces and a filter.

[0122] Preferably, the filter module 4 includes a filter, at least one filter is provided, and the filter is installed in parallel between the heat exchange module and the high-pressure chamber.

[0123] In this embodiment, two filters are provided.

[0124] Preferably, at least one pump drive module 2 and at least one heat exchange module 3 are provided.

[0125] In this embodiment, two heat exchange modules 3 and two pump drive modules 2 are provided, and the two pump drive modules 2 are built in the low negative pressure chamber 1 and are arranged in parallel.

[0126] Preferably, the pump drive module 2 and the heat exchange module 3 are arranged in a one-to-one correspondence.

[0127] Example 8

[0128] refer to Figure 7 This embodiment is further configured on the basis of the embodiment 1, and this embodiment takes a single negative pressure chamber as an example.

[0129] Preferably, the heat exchange module 3 is connected to the drainage interface of the low negative pressure chamber 1 through a first pipeline, and the pump drive module 2 is arranged on the first pipeline.

[0130] In this embodiment, the first pipeline is provided with instrument interfaces such as a flow meter, a thermometer, a pressure gauge, and a filter.

[0131] Preferably, the heat exchange module 3 is connected to the liquid inlet interface of the high-pressure chamber 6 through a second pipeline, and the purification module 5 and the filtration module 4 are arranged on the second pipeline.

[0132] In this embodiment, the second pipeline is provided with a flow meter, a thermometer, a pressure gauge and other instrument interfaces and a filter.

[0133] Preferably, the filter module 4 includes a filter, at least one filter is provided, and the filter is installed in parallel between the heat exchange module and the high-pressure chamber.

[0134] In this embodiment, two filters are provided.

[0135] Preferably, at least one pump drive module 2 and at least one heat exchange module 3 are provided.

[0136] Preferably, the pump drive modules 2 and the heat exchange modules 3 are arranged in a one-to-many or many-to-one manner.

[0137] In this embodiment, two pump drive modules 2 are provided, the two pump drive modules are respectively connected to the low negative pressure chamber 1, and the two pump drive modules 2 are provided in parallel; one heat exchange module 3 is provided.

[0138] Example 9

[0139] refer to Figure 8 This embodiment is further configured on the basis of the embodiment 1, and this embodiment takes a single negative pressure chamber as an example.

[0140] Preferably, the heat exchange module 3 is connected to the drainage interface of the low negative pressure chamber 1 through a first pipeline, and the pump drive module 2 is arranged on the first pipeline.

[0141] In this embodiment, the first pipeline is provided with instrument interfaces such as a flow meter, a thermometer, a pressure gauge, and a filter.

[0142] Preferably, the heat exchange module 3 is connected to the liquid inlet interface of the high-pressure chamber 6 through a second pipeline, and the purification module 5 and the filtration module 4 are arranged on the second pipeline.

[0143] In this embodiment, the second pipeline is provided with a flow meter, a thermometer, a pressure gauge and other instrument interfaces and a filter.

[0144] Preferably, the filter module 4 includes a filter, at least one filter is provided, and the filter is installed in parallel between the heat exchange module and the high-pressure chamber.

[0145] In this embodiment, two filters are provided.

[0146] Preferably, at least one pump drive module 2 and at least one heat exchange module 3 are provided.

[0147] In this embodiment, two heat exchange modules 3 and two pump drive modules 2 are provided, and the two pump drive modules 2 are connected to the low negative pressure chamber 1 , and the pump drive modules 2 are provided in parallel.

[0148] Preferably, the pump drive module 2 and the heat exchange module 3 are arranged in a one-to-one correspondence.

[0149] Example 10

[0150] refer to Figure 9 This embodiment is further configured on the basis of embodiment 1. The low negative pressure chamber and the high negative pressure chamber can be combined with the load module to form a ring network structure, that is, the load module is directly connected to the high and low negative pressure chambers to form a loop.

[0151] Preferably, the heat exchange module 3 is connected to the drainage interface of the low negative pressure chamber 1 through a first pipeline, and the pump drive module 2 is arranged on the first pipeline.

[0152] In this embodiment, the first pipeline is provided with instrument interfaces such as a flow meter, a thermometer, a pressure gauge, and a filter.

[0153] Preferably, the heat exchange module 3 is connected to the liquid inlet interface of the high-pressure chamber 6 through a second pipeline, and the purification module 5 and the filtration module 4 are arranged on the second pipeline.

[0154] In this embodiment, the second pipeline is provided with a flow meter, a thermometer, a pressure gauge and other instrument interfaces and a filter.

[0155] Preferably, at least one pump drive module 2 and at least one heat exchange module 3 are provided.

[0156] In this embodiment, multiple heat exchange modules 3 and pump drive modules 2 are provided, multiple pump drive modules 2 are connected to the low negative pressure chamber 1, and the pump drive modules 2 are provided in parallel.

[0157] Preferably, the pump drive module 2 and the heat exchange module 3 are arranged in a one-to-one correspondence.

[0158] In this embodiment, a plurality of filtration modules and purification modules are provided, and are arranged in a one-to-one correspondence with the pump drive modules 2 .

[0159] Example 11

[0160] refer to Figure 10This embodiment is further configured on the basis of embodiment 1. The low negative pressure chamber and the high negative pressure chamber can be combined with the load module to form a ring network structure, that is, the load module is directly connected to the high and low negative pressure chambers to form a loop.

[0161] Preferably, the heat exchange module 3 is connected to the drainage interface of the low negative pressure chamber 1 through a first pipeline, and the pump drive module 2 is arranged on the first pipeline.

[0162] In this embodiment, the first pipeline is provided with instrument interfaces such as a flow meter, a thermometer, a pressure gauge, and a filter.

[0163] Preferably, the heat exchange module 3 is connected to the liquid inlet interface of the high-pressure chamber 6 through a second pipeline, and the purification module 5 and the filtration module 4 are arranged on the second pipeline.

[0164] In this embodiment, the second pipeline is provided with a flow meter, a thermometer, a pressure gauge and other instrument interfaces and a filter.

[0165] Preferably, the filter module 4 includes a filter, at least one filter is provided, and the filter is installed in parallel between the heat exchange module and the high-pressure chamber.

[0166] In this embodiment, two filters are provided.

[0167] Preferably, at least one pump drive module 2 and at least one heat exchange module 3 are provided.

[0168] In this embodiment, three heat exchange modules 3 and three pump drive modules 2 are provided, and the three pump drive modules 2 are connected to the low negative pressure chamber 1 , and the pump drive modules 2 are provided in parallel.

[0169] Preferably, the pump drive module 2 and the heat exchange module 3 are arranged in a one-to-one correspondence.

[0170] Example 12

[0171] refer to Figure 11 This embodiment is further configured on the basis of embodiment 1. The low negative pressure chamber and the high negative pressure chamber can be combined with the load module to form a ring network structure, that is, the load module is directly connected to the high and low negative pressure chambers to form a loop.

[0172] Preferably, the heat exchange module 3 is connected to the drainage interface of the low negative pressure chamber 1 through a first pipeline, and the pump drive module 2 is arranged on the first pipeline.

[0173] In this embodiment, the first pipeline is provided with instrument interfaces such as a flow meter, a thermometer, a pressure gauge, and a filter.

[0174] Preferably, the heat exchange module 3 is connected to the liquid inlet interface of the high-pressure chamber 6 through a second pipeline, and the purification module 5 and the filtration module 4 are arranged on the second pipeline.

[0175] In this embodiment, the second pipeline is provided with a flow meter, a thermometer, a pressure gauge and other instrument interfaces and a filter.

[0176] Preferably, the filter module 4 includes a filter, at least one filter is provided, and the filter is installed in parallel between the heat exchange module and the high-pressure chamber.

[0177] In this embodiment, two filters are provided.

[0178] Preferably, at least one pump drive module 2 and at least one heat exchange module 3 are provided.

[0179] Preferably, the pump drive modules 2 and the heat exchange modules 3 are arranged in a one-to-many or many-to-one manner.

[0180] In this embodiment, three pump drive modules 2 are provided, the three pump drive modules are respectively connected to the low negative pressure chamber 1, and the three pump drive modules 2 are arranged in parallel; one heat exchange module 3 is provided.

[0181] Example 13

[0182] This embodiment is further configured on the basis of the embodiment 1.

[0183] Preferably, the heat exchange module is connected to the exhaust side of the vacuum maintenance system, and the condensation reflux interface of the heat exchange module is connected to the liquid inlet end of the liquid replenishment and drainage module.

[0184] Example 14

[0185] This embodiment is further configured on the basis of the embodiment 1.

[0186] Preferably, the condenser module 9 is built into the liquid replenishment and drainage module 7 and is located at the liquid inlet end of the liquid replenishment and drainage module 7 .

[0187] Example 15

[0188] This embodiment is further configured on the basis of the embodiment 1.

[0189] Multiple negative pressure liquid cooling systems can be connected to the same condenser module. For example, in a data center, each pod is equipped with two negative pressure cooling distribution units. Each computer room has eight pods, and a total of 16 negative pressure cooling distribution units can be connected to a larger condenser module.

[0190] Example 16

[0191] refer to Figure 12 This embodiment is an n+1 configuration negative pressure liquid cooling system, and the negative pressure liquid cooling system consists of n sets or n+1 sets connected in parallel to provide cooling function for a set of load systems.

[0192] A negative pressure liquid cooling system, comprising:

[0193] A low-negative-pressure chamber 1, a high-pressure chamber 6, and a liquid replenishment and drainage module 7. The low-negative-pressure chamber 1 is connected to the high-pressure chamber 6 through a pump-driven module 2. The pump-driven module 2 is used to transport the coolant from the low-negative-pressure chamber 1 to the high-pressure chamber 6. The liquid replenishment and drainage module 7 is connected to the low-negative-pressure chamber 1 and the high-pressure chamber 6, respectively. A heat exchange module 3 and a filter module 4 are further provided between the pump-driven module 2 and the high-pressure chamber 6. The inlet end of the heat exchange module 3 is connected to the pump-driven module 2, and the outlet end of the heat exchange module 3 is connected to the inlet end of the filter module 4. The outlet end of the filter module 4 is connected to the inlet end of the high-pressure chamber 6.

[0194] The load module 8 has a liquid inlet connected to the liquid supply port of the high-pressure chamber 6 and a liquid outlet connected to the liquid return port of the low-negative-pressure chamber 1;

[0195] Purification module 5, which is located between the heat exchange module 3 and the load module 8;

[0196] The vacuum maintaining module 10, the vacuum maintaining module 10 is connected to the low negative pressure chamber 1, the high pressure chamber 6 and the liquid replenishing and draining module 7 respectively;

[0197] Condenser module 9, the water inlet of the condenser module 9 is connected to the exhaust side of the vacuum maintenance module 10, and the water outlet of the condenser module 9 is connected to the liquid inlet end of the replenishment and drainage module 7;

[0198] The control unit is respectively connected to the low negative pressure chamber 1, the high pressure chamber 6, the liquid replenishment and drainage module 7, the pump drive module 2, the filtration module 4, the purification module 5, the load module 8, the vacuum maintenance module 10 and the condenser module 9.

[0199] In this embodiment, the purification module 5 and the filtration module 4 are installed in parallel.

[0200] Preferably, the pump drive module 2 is built into the low negative pressure chamber 1 and is located at the drainage interface of the low negative pressure chamber 1 .

[0201] In this embodiment, the pump drive module 2 is connected to the heat exchange module through a first pipeline; the first pipeline is provided with instrument interfaces such as a flow meter, a thermometer, a pressure gauge, and a filter.

[0202] Preferably, the heat exchange module 3 is connected to the liquid inlet interface of the high-pressure chamber 6 through a second pipeline, and the purification module 5 and the filtration module 4 are arranged on the second pipeline.

[0203] In this embodiment, the second pipeline is provided with a flow meter, a thermometer, a pressure gauge and other instrument interfaces and a filter.

[0204] Preferably, the filter module 4 includes a filter, at least one filter is provided, and the filter is installed in parallel between the heat exchange module and the high-pressure chamber.

[0205] In this embodiment, two filters are provided.

[0206] Preferably, at least one pump drive module 2 and at least one heat exchange module 3 are provided.

[0207] Preferably, the pump drive modules 2 and the heat exchange modules 3 are arranged in a one-to-many or many-to-one manner.

[0208] In this embodiment, two pump drive modules 2 are provided, the two pump drive modules 2 are built in the low negative pressure chamber 1, and the two pump drive modules 2 are arranged in parallel; and one heat exchange module is provided.

[0209] The negative pressure liquid cooling system and technology support cluster control, support liquid level balance control and automatic liquid replenishment and online liquid replacement functions under the cluster and in the single unit, and support parallel connection of vacuum maintenance modules to build vacuum system cluster control.

[0210] The above description is merely a preferred embodiment of the present invention and does not limit the technical scope of the present invention. Therefore, any minor modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A negative pressure liquid cooling system, characterized in that: include: A low negative pressure chamber, a high pressure chamber and a replenishment and drainage module, wherein the low negative pressure chamber is connected to the high pressure chamber via a pump drive module, and the pump drive module is used to transport the coolant from the low negative pressure chamber to the high pressure chamber; the replenishment and drainage module is respectively connected to the low negative pressure chamber and the high pressure chamber; a heat exchange module and a filter module are further provided between the pump drive module and the high pressure chamber; the inlet end of the heat exchange module is connected to the pump drive module, and the outlet end of the heat exchange module is connected to the inlet end of the filter module; the outlet end of the filter module is connected to the inlet end of the high pressure chamber; A load module, wherein a liquid inlet of the load module is communicated with a liquid supply port of the high-pressure chamber, and a liquid outlet of the load module is communicated with a liquid return port of the low negative pressure chamber; a purification module, the purification module being located between the heat exchange module and the load module; a vacuum maintenance module, wherein the vacuum maintenance module has an air extraction side connected to the low negative pressure chamber, the high pressure chamber and the liquid replenishment and drainage module respectively; a condenser module, wherein the water inlet of the condenser module is connected to the exhaust side of the vacuum maintenance module, and the water outlet of the condenser module is connected to the liquid inlet end of the liquid replenishment and drainage module; A control unit is respectively connected to the low negative pressure chamber, the high pressure chamber, the liquid replenishment and drainage module, the pump drive module, the filtration module, the purification module, the load module, the vacuum maintenance module and the condenser module.

2. A negative pressure liquid cooling system according to claim 1, characterized in that: The pump drive module is built into the low negative pressure chamber and is located at the drainage interface of the low negative pressure chamber.

3. The negative pressure liquid cooling system according to claim 1, characterized in that: The heat exchange module is communicated with the drainage interface of the low negative pressure chamber through a first pipeline, and the pump drive module is arranged on the first pipeline.

4. The negative pressure liquid cooling system according to claim 1, characterized in that: The heat exchange module is communicated with the liquid inlet interface of the high-pressure chamber through a second pipeline, and the purification module and the filtration module are arranged on the second pipeline.

5. The negative pressure liquid cooling system according to claim 1, characterized in that: The heat exchange module is built into the high-pressure chamber and is located at the liquid inlet interface of the high-pressure chamber.

6. The negative pressure liquid cooling system according to claim 1, characterized in that: The filter module includes a filter, at least one filter is provided, and the filter is installed in parallel between the heat exchange module and the high-pressure chamber.

7. The negative pressure liquid cooling system according to claim 1, characterized in that: The condenser module is connected to the exhaust side of the vacuum maintenance system, and the condensation reflux interface of the condenser module is connected to the liquid inlet end of the liquid replenishment and drainage module.

8. The negative pressure liquid cooling system according to claim 1, characterized in that: At least one of the pump drive module and the heat exchange module is provided.

9. The negative pressure liquid cooling system according to claim 8, characterized in that: The pump drive modules are arranged in a one-to-one correspondence with the heat exchange modules.

10. The negative pressure liquid cooling system according to claim 9, characterized in that: The pump drive modules and the heat exchange modules are arranged in a one-to-many or many-to-one manner.

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