A negative pressure liquid cooling system

Abstract

This utility model discloses a negative pressure liquid cooling system, belonging to the field of liquid cooling heat dissipation technology for electronic devices. It includes a low negative pressure chamber, a high pressure chamber, and a replenishment / drainage module. The low negative pressure chamber is connected to the high pressure chamber via a pump-driven module, which transports coolant from the low negative pressure chamber to the high pressure chamber. The replenishment / drainage module is connected to both the low negative pressure chamber and the high pressure chamber. A heat exchange module and a filter module are also provided between the pump-driven module and the high pressure chamber. The inlet end of the heat exchange module is connected to the pump-driven 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 purification module is located between the heat exchange module and the high pressure chamber and is installed in parallel with the filter module. This utility model uses a pump to achieve fluid flow from the low negative pressure chamber to the high pressure chamber, realizing a stable flow rate or pressure difference output from the high pressure chamber to the low negative pressure chamber, forming a closed-loop circulation system.

Description

Technical Field

[0001] This utility model belongs to the field of liquid cooling technology for electronic devices, and specifically relates to a negative pressure liquid cooling system. Background Technology

[0002] With the rapid development of the chip industry and the AI ​​field, the heat flux density of servers is increasing. Air cooling technology has reached its limit for high-end chips and is also approaching its limit for general-purpose chips. Liquid cooling technology is becoming the norm. The high computing power density requirements of AI servers have spurred a surge in demand for high-performance chips, resulting in rapid growth. Solving heat dissipation is fundamental to ensuring the high performance of chips. Behind the improvement in chip performance, heat flux density is also increasing exponentially, making liquid cooling technology a cost-effective and efficient temperature control method. Currently, commonly used liquid cooling technologies employ pumps to drive coolant (water, ethylene glycol, etc.) through channels on the surface or back of heat-generating components. The coolant exchanges heat with the heat-generating components within these channels, carrying away heat to achieve heat dissipation. The pipes or channels containing the coolant are under positive pressure, meaning the system pressure is greater than the external atmospheric pressure. When defects such as pinholes or poor sealing occur in the system, there is a risk of coolant leakage and splashing. Furthermore, many widely used formulated coolants are conductive, which can cause fatal damage to high-value components (such as servers). Because the cooling pressure inside the negative pressure liquid cooling system is lower than the external atmospheric pressure, the coolant will not leak when there is damage, pinholes, or poor sealing in a certain part of the system. This directly solves the most serious risk point of the positive pressure liquid cooling system and has broad application prospects.

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

[0004] To solve the above problems, the present invention adopts the following technical solution:

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

[0006] The system includes a low-pressure chamber, a high-pressure chamber, and a coolant replenishment / drainage module. The low-pressure chamber is connected to the high-pressure chamber via a pump-driven module, which delivers coolant from the low-pressure chamber to the high-pressure chamber. The coolant replenishment / drainage module is connected to both the low-pressure chamber and the high-pressure chamber. A heat exchange module and a filter module are also provided between the pump-driven module and the high-pressure chamber. The inlet of the heat exchange module is connected to the pump-driven module, and the outlet of the heat exchange module is connected to the inlet of the filter module. The outlet of the filter module is connected to the inlet of the high-pressure chamber.

[0007] The load module has its inlet end connected to the liquid supply port of the high-pressure chamber and its outlet end connected to the liquid return port of the low-negative-pressure chamber.

[0008] A purification module is located between the heat exchange module and the load module;

[0009] A vacuum maintenance module, wherein the pumping side of the vacuum maintenance module is connected to the low negative pressure chamber, the high pressure chamber and the replenishment / drainage module respectively;

[0010] The control unit is connected to the low negative pressure chamber, the high pressure chamber, the replenishment and drainage module, the pump drive module, the filtration module, the purification module, the load module, and the vacuum maintenance module, respectively.

[0011] Furthermore, the pump drive module is built into the low negative pressure chamber and located at the drain port of the low negative pressure chamber.

[0012] Furthermore, the heat exchange module is connected to the drain port of the low negative pressure chamber through a first pipe, and the pump drive module is installed on the first pipe.

[0013] Furthermore, the heat exchange module is connected to the liquid inlet of the high-pressure chamber via a second pipe, and the purification module and the filtration module are mounted on the second pipe.

[0014] Furthermore, the heat exchange module is built into the high-pressure chamber and located at the liquid inlet of the high-pressure chamber.

[0015] Furthermore, the filtration module includes a filter, and at least one filter is provided, and the filter is installed in parallel between the heat exchange module and the high-pressure chamber.

[0016] Furthermore, it also includes a condenser module, which is connected to the exhaust side of the vacuum maintenance system, and the condensation reflux interface of the condenser module is connected to the inlet end of the replenishment liquid module.

[0017] Furthermore, the condenser module is built into the replenishment / drainage module and is located at the inlet end of the replenishment / drainage module.

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

[0019] Beneficial effects:

[0020] This invention achieves a negative pressure or partial negative pressure state in the system through a vacuum maintenance module. By adjusting the pressure difference between the high and low negative pressure chambers, fluid flows from the high pressure chamber to the low negative pressure chamber. A pump drives the fluid to flow from the low negative pressure chamber to the high pressure chamber, achieving a stable pressure difference output from the high pressure chamber to the low negative pressure chamber, thus forming a closed-loop circulation system. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of the negative pressure liquid cooling system with dual negative pressure chambers of this utility model. Figure 1 ;

[0022] Figure 2 This is a schematic diagram of the structure of the negative pressure liquid cooling system with dual negative pressure chambers of this utility model. Figure 2 ;

[0023] Figure 3 This is a schematic diagram of the structure of the negative pressure liquid cooling system with dual negative pressure chambers of this utility model. Figure 3 ;

[0024] Figure 4 This is a schematic diagram of the structure of the negative pressure liquid cooling system with dual negative pressure chambers of this utility model. Figure 4 ;

[0025] Figure 5 This is a schematic diagram of the structure of the single negative pressure chamber negative pressure liquid cooling system of this utility model. Figure 1 ;

[0026] Figure 6 This is a schematic diagram of the structure of the single negative pressure chamber negative pressure liquid cooling system of this utility model. Figure 2 ;

[0027] Figure 7 This is a schematic diagram of the structure of the single negative pressure chamber negative pressure liquid cooling system of this utility model. Figure 3 ;

[0028] Figure 8 This is a schematic diagram of the structure of the single negative pressure chamber negative pressure liquid cooling system of this utility model. Figure 4 ;

[0029] Figure 9 This is a schematic diagram of the structure of the integrated negative pressure liquid cooling system of this utility model. Figure 1 ;

[0030] Figure 10 This is a schematic diagram of the structure of the integrated negative pressure liquid cooling system of this utility model. Figure 2 ;

[0031] Figure 11 This is a schematic diagram of the structure of the integrated negative pressure liquid cooling system of this utility model. Figure 3 ;

[0032] Figure 12This is a schematic diagram of the 12n+1 configuration negative pressure liquid cooling system of this utility model;

[0033] Explanation of reference numerals in the attached diagram: 1. Low negative pressure chamber; 2. Pump drive module; 3. Heat exchange module; 4. Filtration module; 5. Purification module; 6. High pressure chamber; 7. Make-up and drain module; 8. Load module; 9. Condenser module; 10. Vacuum maintenance module. Detailed Implementation

[0034] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0035] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0036] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" or "second" is used in the description, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0037] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0038] Example 1

[0039] A negative pressure liquid cooling system, comprising:

[0040] The system comprises a low-pressure chamber 1, a high-pressure chamber 6, and a coolant replenishment / drainage module 7. The low-pressure chamber 1 is connected to the high-pressure chamber 6 via a pump-driven module 2, which delivers coolant from the low-pressure chamber 1 to the high-pressure chamber 6. The coolant replenishment / drainage module 7 is connected to both the low-pressure chamber 1 and the high-pressure chamber 6. A heat exchange module 3 and a filter module 4 are also provided between the pump-driven module 2 and the high-pressure chamber 6. The inlet of the heat exchange module 3 is connected to the pump-driven module 2, and the outlet of the heat exchange module 3 is connected to the inlet of the filter module 4. The outlet of the filter module 4 is connected to the inlet of the high-pressure chamber 6.

[0041] The load module 8 has its inlet end connected to the liquid supply port of the high-pressure chamber 6, and its outlet end connected to the liquid return port of the low negative pressure chamber 1.

[0042] Purification module 5 is located between heat exchange module 3 and high pressure chamber 6;

[0043] Vacuum maintenance module 10, the pumping side of vacuum maintenance module 10 is connected to low negative pressure chamber 1, high pressure chamber 6 and liquid replenishment / drainage module 7 respectively;

[0044] The control unit is connected to the low negative pressure chamber 1, the high pressure chamber 6, the replenishment and drainage module 7, the pump drive module 2, the filter module 4, the purification module 5, the load module 8, and the vacuum maintenance module 10, respectively.

[0045] Preferably, it also includes a condenser module 9, the water inlet of the condenser module 9 is connected to the exhaust side of the vacuum maintenance module 10, the water outlet of the condenser module 9 is connected to the liquid inlet of the replenishment and drainage module 7; the condenser module 9 is connected to the control unit.

[0046] In this embodiment, the purification module 5 and the filtration module 4 are installed in parallel.

[0047] In this embodiment, the pump drive module 2 consists of a pump, a motor, a check valve, a piping assembly, valves, etc.; in other embodiments, a filter may also be integrated into the pump drive module.

[0048] In this embodiment, the low negative pressure chamber 1 is composed of a chamber body, functional valves, a vacuum interface, a drain interface, a replenishment interface, and an external environment interface; the high pressure chamber is composed of a chamber body, functional valves, an electric valve, a vacuum interface, a drain interface, a replenishment interface, and an external environment interface.

[0049] In this embodiment, the heat exchange module 3 consists of a heat exchanger, a cold source cooling capacity module, etc. The heat exchanger includes, but is not limited to, a plate heat exchanger, a wind-liquid heat exchanger, etc.

[0050] In this embodiment, the vacuum maintenance module 10 consists of a vacuum pump, a vacuum monitoring system, a vacuum release valve, functional valves, an electric valve, a self-drying assembly, and a vacuum piping assembly. The vacuum pump can operate intermittently or continuously for extended periods, depending on system requirements.

[0051] In this embodiment, the condenser module 9 consists of a condenser, a condensate filtration and cleaning component, valves, etc.; the main purpose of the condenser module 9 is to save and recycle coolant.

[0052] In this embodiment, the purification module 5 consists of ion exchange resin, functional valves, electric valves, check valves, flow meters, isolation filters, conductivity monitoring modules, etc. The lifespan 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 specifically designed for pure water coolant applications.

[0053] In this embodiment, the control unit consists of a PLC or microcontroller, a touch screen, low-voltage electrical components, sensors, etc.

[0054] In this embodiment, the high-pressure chamber 6 is connected to the load module 8 through a third pipe; the third pipe is equipped with thermometer and pressure gauge interfaces, and may have interfaces for chemical sensors such as flow meters, conductivity, and pH; the low-pressure chamber 1 is connected to the load module 8 through a fourth pipe, the fourth pipe is equipped with pressure and temperature monitoring instruments, and may have interfaces for sensors such as flow meters, conductivity, and pH.

[0055] In this embodiment, a bubble detection device is installed on the fourth pipe to detect whether a leak or cavitation occurs during the circulation of the negative pressure liquid cooling system, and to provide an early warning of the amount of cavitation.

[0056] The interfaces of the low negative pressure chamber 1, high pressure chamber 6 and vacuum maintenance module 10 are located at the top, ensuring that air is drawn from the top of the tank and preventing liquid cooling medium from being sucked 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, preventing coolant from entering the vacuum maintenance module 10.

[0057] In this embodiment, the low negative pressure chamber 1, the high pressure chamber 6, and the replenishment / drainage module 7 are connected to the vacuum pump module via a fifth pipeline. The fifth pipeline has parallel branch lines connecting to the three chambers, and a main pipeline connecting to the vacuum pump. Each of the three branch lines has a pressure monitoring instrument and an electric valve. The top of each of the three chambers is also equipped with a vacuum breaking valve, which can be used to evacuate or release vacuum respectively. The fifth pipeline is also equipped with a parallel interface for the vacuum pump module. By connecting the parallel interfaces of the vacuum pump modules on each device, the vacuum pump modules can achieve physical redundancy and backup, and the control level redundancy and backup can be achieved through group control scheduling.

[0058] In this embodiment, the low negative pressure chamber 1, the high pressure chamber 6, and the liquid replenishment and drainage module 7 are all equipped with pressure detection and liquid level detection, which can realize automatic balance control of liquid level.

[0059] Example 2

[0060] refer to Figure 1 This embodiment is a further modification based on embodiment 1, and takes a double negative pressure chamber as an example.

[0061] Preferably, the pump drive module 2 is built into the low negative pressure chamber 1 and is located at the drain port of the low negative pressure chamber 1.

[0062] In this embodiment, the pump drive module 2 is connected to the heat exchange module through a first pipe; the first pipe is equipped with instrument interfaces such as flow meter, thermometer, and pressure gauge, as well as a filter.

[0063] Preferably, the heat exchange module 3 is connected to the liquid inlet of the high-pressure chamber 6 through the second pipe, and the purification module 5 and the filtration module 4 are installed on the second pipe.

[0064] In this embodiment, the second pipeline is equipped with interfaces for instruments such as flow meters, thermometers, and pressure gauges, as well as a filter.

[0065] 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.

[0066] In this embodiment, two filters are provided.

[0067] Preferably, at least one pump drive module 2 and one heat exchange module 3 are provided.

[0068] Preferably, the pump drive module 2 and the heat exchange module 3 are configured in a one-to-many or many-to-one manner.

[0069] In this embodiment, there are two low negative pressure chambers 1 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; there is one heat exchange module 3.

[0070] Example 3

[0071] refer to Figure 2 This embodiment is a further modification based on embodiment 1, and takes a double negative pressure chamber as an example.

[0072] Preferably, the pump drive module 2 is built into the low negative pressure chamber 1 and is located at the drain port of the low negative pressure chamber 1.

[0073] In this embodiment, the pump drive module 2 is connected to the heat exchange module through a first pipe; the first pipe is equipped with instrument interfaces such as flow meter, thermometer, and pressure gauge, as well as a filter.

[0074] Preferably, the heat exchange module 3 is connected to the liquid inlet of the high-pressure chamber 6 through the second pipe, and the purification module 5 and the filtration module 4 are installed on the second pipe.

[0075] In this embodiment, the second pipeline is equipped with interfaces for instruments such as flow meters, thermometers, and pressure gauges, as well as a filter.

[0076] 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.

[0077] In this embodiment, two filters are provided.

[0078] Preferably, at least one pump drive module 2 and one heat exchange module 3 are provided.

[0079] 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 connected in parallel.

[0080] Preferably, the pump drive module 2 and the heat exchange module 3 are configured in a one-to-one correspondence.

[0081] Example 4

[0082] refer to Figure 3 This embodiment is a further modification based on embodiment 1, and takes a double negative pressure chamber as an example.

[0083] Preferably, the heat exchange module 3 is connected to the drain port of the low negative pressure chamber 1 through the first pipe, and the pump drive module 2 is installed on the first pipe.

[0084] In this embodiment, the first pipeline is equipped with instrument interfaces such as flow meter, thermometer, and pressure gauge, as well as a filter.

[0085] Preferably, the heat exchange module 3 is connected to the liquid inlet of the high-pressure chamber 6 through the second pipe, and the purification module 5 and the filtration module 4 are installed on the second pipe.

[0086] In this embodiment, the second pipeline is equipped with interfaces for instruments such as flow meters, thermometers, and pressure gauges, as well as a filter.

[0087] 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.

[0088] In this embodiment, two filters are provided.

[0089] Preferably, at least one pump drive module 2 and one heat exchange module 3 are provided.

[0090] Preferably, the pump drive module 2 and the heat exchange module 3 are configured in a one-to-many or many-to-one manner.

[0091] In this embodiment, there are two low negative pressure chambers 1 and two pump drive modules 2. The two pump drive modules are connected to the two low negative pressure chambers 1 respectively, and the two low negative pressure chambers are arranged in parallel. There is one heat exchange module.

[0092] Example 5

[0093] refer to Figure 4 This embodiment is a further modification based on embodiment 1, and takes a double negative pressure chamber as an example.

[0094] Preferably, the heat exchange module 3 is connected to the drain port of the low negative pressure chamber 1 through the first pipe, and the pump drive module 2 is installed on the first pipe.

[0095] In this embodiment, the first pipeline is equipped with instrument interfaces such as flow meter, thermometer, and pressure gauge, as well as a filter.

[0096] Preferably, the heat exchange module 3 is connected to the liquid inlet of the high-pressure chamber 6 through the second pipe, and the purification module 5 and the filtration module 4 are installed on the second pipe.

[0097] In this embodiment, the second pipeline is equipped with interfaces for instruments such as flow meters, thermometers, and pressure gauges, as well as a filter.

[0098] 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.

[0099] In this embodiment, two filters are provided.

[0100] Preferably, at least one pump drive module 2 and one heat exchange module 3 are provided.

[0101] 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 connected to the two low negative pressure chambers 1 respectively, and the two low negative pressure chambers 1 and the pump drive modules 2 are arranged in parallel.

[0102] Preferably, the pump drive module 2 and the heat exchange module 3 are configured in a one-to-one correspondence.

[0103] Example 6

[0104] refer to Figure 5 This embodiment is a further modification based on embodiment 1, and this embodiment takes a single negative pressure chamber as an example.

[0105] Preferably, the pump drive module 2 is built into the low negative pressure chamber 1 and is located at the drain port of the low negative pressure chamber 1.

[0106] In this embodiment, the pump drive module 2 is connected to the heat exchange module through a first pipe; the first pipe is equipped with instrument interfaces such as flow meter, thermometer, and pressure gauge, as well as a filter.

[0107] Preferably, the heat exchange module 3 is connected to the liquid inlet of the high-pressure chamber 6 through the second pipe, and the purification module 5 and the filtration module 4 are installed on the second pipe.

[0108] In this embodiment, the second pipeline is equipped with interfaces for instruments such as flow meters, thermometers, and pressure gauges, as well as a filter.

[0109] 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.

[0110] In this embodiment, two filters are provided.

[0111] Preferably, at least one pump drive module 2 and one heat exchange module 3 are provided.

[0112] Preferably, the pump drive module 2 and the heat exchange module 3 are configured in a one-to-many or many-to-one manner.

[0113] In this embodiment, there are two pump drive modules 2, which are built into the low negative pressure chamber 1 and are connected in parallel; there is one heat exchange module.

[0114] Example 7

[0115] refer to Figure 6 This embodiment is a further modification based on embodiment 1, and this embodiment takes a single negative pressure chamber as an example.

[0116] Preferably, the pump drive module 2 is built into the low negative pressure chamber 1 and is located at the drain port of the low negative pressure chamber 1.

[0117] In this embodiment, the pump drive module 2 is connected to the heat exchange module through a first pipe; the first pipe is equipped with instrument interfaces such as flow meter, thermometer, and pressure gauge, as well as a filter.

[0118] Preferably, the heat exchange module 3 is connected to the liquid inlet of the high-pressure chamber 6 through the second pipe, and the purification module 5 and the filtration module 4 are installed on the second pipe.

[0119] In this embodiment, the second pipeline is equipped with interfaces for instruments such as flow meters, thermometers, and pressure gauges, as well as a filter.

[0120] 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.

[0121] In this embodiment, two filters are provided.

[0122] Preferably, at least one pump drive module 2 and one heat exchange module 3 are provided.

[0123] In this embodiment, there are two heat exchange modules 3 and two pump drive modules 2. The two pump drive modules 2 are built into the low negative pressure chamber 1 and are connected in parallel.

[0124] Preferably, the pump drive module 2 and the heat exchange module 3 are configured in a one-to-one correspondence.

[0125] Example 8

[0126] refer to Figure 7 This embodiment is a further modification based on embodiment 1, and this embodiment takes a single negative pressure chamber as an example.

[0127] Preferably, the heat exchange module 3 is connected to the drain port of the low negative pressure chamber 1 through the first pipe, and the pump drive module 2 is installed on the first pipe.

[0128] In this embodiment, the first pipeline is equipped with instrument interfaces such as flow meter, thermometer, and pressure gauge, as well as a filter.

[0129] Preferably, the heat exchange module 3 is connected to the liquid inlet of the high-pressure chamber 6 through the second pipe, and the purification module 5 and the filtration module 4 are installed on the second pipe.

[0130] In this embodiment, the second pipeline is equipped with interfaces for instruments such as flow meters, thermometers, and pressure gauges, as well as a filter.

[0131] 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.

[0132] In this embodiment, two filters are provided.

[0133] Preferably, at least one pump drive module 2 and one heat exchange module 3 are provided.

[0134] Preferably, the pump drive module 2 and the heat exchange module 3 are configured in a one-to-many or many-to-one manner.

[0135] In this embodiment, there are two pump drive modules 2, each connected to the low negative pressure chamber 1, and the two pump drive modules 2 are arranged in parallel; there is one heat exchange module 3.

[0136] Example 9

[0137] refer to Figure 8 This embodiment is a further modification based on embodiment 1, and this embodiment takes a single negative pressure chamber as an example.

[0138] Preferably, the heat exchange module 3 is connected to the drain port of the low negative pressure chamber 1 through the first pipe, and the pump drive module 2 is installed on the first pipe.

[0139] In this embodiment, the first pipeline is equipped with instrument interfaces such as flow meter, thermometer, and pressure gauge, as well as a filter.

[0140] Preferably, the heat exchange module 3 is connected to the liquid inlet of the high-pressure chamber 6 through the second pipe, and the purification module 5 and the filtration module 4 are installed on the second pipe.

[0141] In this embodiment, the second pipeline is equipped with interfaces for instruments such as flow meters, thermometers, and pressure gauges, as well as a filter.

[0142] 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.

[0143] In this embodiment, two filters are provided.

[0144] Preferably, at least one pump drive module 2 and one heat exchange module 3 are provided.

[0145] In this embodiment, there are two heat exchange modules 3 and two pump drive modules 2. The two pump drive modules 2 are connected to the low negative pressure chamber 1 and are arranged in parallel.

[0146] Preferably, the pump drive module 2 and the heat exchange module 3 are configured in a one-to-one correspondence.

[0147] Example 10

[0148] refer to Figure 9 This embodiment is a further improvement on 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 circuit.

[0149] Preferably, the heat exchange module 3 is connected to the drain port of the low negative pressure chamber 1 through the first pipe, and the pump drive module 2 is installed on the first pipe.

[0150] In this embodiment, the first pipeline is equipped with instrument interfaces such as flow meter, thermometer, and pressure gauge, as well as a filter.

[0151] Preferably, the heat exchange module 3 is connected to the liquid inlet of the high-pressure chamber 6 through the second pipe, and the purification module 5 and the filtration module 4 are installed on the second pipe.

[0152] In this embodiment, the second pipeline is equipped with interfaces for instruments such as flow meters, thermometers, and pressure gauges, as well as a filter.

[0153] Preferably, at least one pump drive module 2 and one heat exchange module 3 are provided.

[0154] In this embodiment, multiple heat exchange modules 3 and multiple pump drive modules 2 are provided, and multiple pump drive modules 2 are connected to the low negative pressure chamber 1, and the pump drive modules 2 are arranged in parallel.

[0155] Preferably, the pump drive module 2 and the heat exchange module 3 are configured in a one-to-one correspondence.

[0156] In this embodiment, multiple filtration and purification modules are provided, and each module corresponds to a pump-driven module 2.

[0157] Example 11

[0158] refer to Figure 10 This embodiment is a further improvement on 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 circuit.

[0159] Preferably, the heat exchange module 3 is connected to the drain port of the low negative pressure chamber 1 through the first pipe, and the pump drive module 2 is installed on the first pipe.

[0160] In this embodiment, the first pipeline is equipped with instrument interfaces such as flow meter, thermometer, and pressure gauge, as well as a filter.

[0161] Preferably, the heat exchange module 3 is connected to the liquid inlet of the high-pressure chamber 6 through the second pipe, and the purification module 5 and the filtration module 4 are installed on the second pipe.

[0162] In this embodiment, the second pipeline is equipped with interfaces for instruments such as flow meters, thermometers, and pressure gauges, as well as a filter.

[0163] 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.

[0164] In this embodiment, two filters are provided.

[0165] Preferably, at least one pump drive module 2 and one heat exchange module 3 are provided.

[0166] In this embodiment, there are three heat exchange modules 3 and three pump drive modules 2. The three pump drive modules 2 are connected to the low negative pressure chamber 1 and are arranged in parallel.

[0167] Preferably, the pump drive module 2 and the heat exchange module 3 are configured in a one-to-one correspondence.

[0168] Example 12

[0169] refer to Figure 11 This embodiment is a further improvement on 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 circuit.

[0170] Preferably, the heat exchange module 3 is connected to the drain port of the low negative pressure chamber 1 through the first pipe, and the pump drive module 2 is installed on the first pipe.

[0171] In this embodiment, the first pipeline is equipped with instrument interfaces such as flow meter, thermometer, and pressure gauge, as well as a filter.

[0172] Preferably, the heat exchange module 3 is connected to the liquid inlet of the high-pressure chamber 6 through the second pipe, and the purification module 5 and the filtration module 4 are installed on the second pipe.

[0173] In this embodiment, the second pipeline is equipped with interfaces for instruments such as flow meters, thermometers, and pressure gauges, as well as a filter.

[0174] 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.

[0175] In this embodiment, two filters are provided.

[0176] Preferably, at least one pump drive module 2 and one heat exchange module 3 are provided.

[0177] Preferably, the pump drive module 2 and the heat exchange module 3 are configured in a one-to-many or many-to-one manner.

[0178] In this embodiment, there are 3 pump drive modules 2, each of which is connected to the low negative pressure chamber 1 and is arranged in parallel; there is 1 heat exchange module 3.

[0179] Example 13

[0180] This embodiment is a further modification based on embodiment 1.

[0181] Preferably, the heat exchange module is connected to the exhaust side of the vacuum maintenance system, and the condensate reflux interface of the heat exchange module is connected to the liquid inlet of the replenishment / drainage module.

[0182] Example 14

[0183] This embodiment is a further modification based on embodiment 1.

[0184] Preferably, the condenser module 9 is built into the replenishment and drainage module 7 and is located at the inlet end of the replenishment and drainage module 7.

[0185] Example 15

[0186] This embodiment is a further modification based on embodiment 1.

[0187] Multiple negative pressure liquid cooling systems can be connected to the same condenser module. For example, in a data center, each POD is configured with 2 negative pressure cooling capacity distribution units, and each computer room has 8 PODs, for a total of 16 negative pressure cooling capacity distribution units that can be connected to a larger condenser module.

[0188] Example 16

[0189] refer to Figure 12 In this embodiment, a 12n+1 negative pressure liquid cooling system is configured. The negative pressure liquid cooling system consists of n or n+1 sets connected in parallel to provide cooling for a single load system.

[0190] A negative pressure liquid cooling system, comprising:

[0191] The system comprises a low-pressure chamber 1, a high-pressure chamber 6, and a coolant replenishment / drainage module 7. The low-pressure chamber 1 is connected to the high-pressure chamber 6 via a pump-driven module 2, which delivers coolant from the low-pressure chamber 1 to the high-pressure chamber 6. The coolant replenishment / drainage module 7 is connected to both the low-pressure chamber 1 and the high-pressure chamber 6. A heat exchange module 3 and a filter module 4 are also provided between the pump-driven module 2 and the high-pressure chamber 6. The inlet of the heat exchange module 3 is connected to the pump-driven module 2, and the outlet of the heat exchange module 3 is connected to the inlet of the filter module 4. The outlet of the filter module 4 is connected to the inlet of the high-pressure chamber 6.

[0192] The load module 8 has its inlet end connected to the liquid supply port of the high-pressure chamber 6, and its outlet end connected to the liquid return port of the low negative pressure chamber 1.

[0193] Purification module 5 is located between heat exchange module 3 and high pressure chamber 6;

[0194] Vacuum maintenance module 10, the pumping side of vacuum maintenance module 10 is connected to low negative pressure chamber 1, high pressure chamber 6 and liquid replenishment / drainage module 7 respectively;

[0195] Condenser module 9, the water inlet of condenser module 9 is connected to the exhaust side of vacuum maintenance module 10, and the water outlet of condenser module 9 is connected to the liquid inlet of replenishment and drainage module 7.

[0196] The control unit is connected to the low negative pressure chamber 1, the high pressure chamber 6, the replenishment and drainage module 7, the pump drive module 2, the filter module 4, the purification module 5, the load module 8, the vacuum maintenance module 10, and the condenser module 9, respectively.

[0197] In this embodiment, the purification module 5 and the filtration module 4 are installed in parallel.

[0198] Preferably, the pump drive module 2 is built into the low negative pressure chamber 1 and is located at the drain port of the low negative pressure chamber 1.

[0199] In this embodiment, the pump drive module 2 is connected to the heat exchange module through a first pipe; the first pipe is equipped with instrument interfaces such as flow meter, thermometer, and pressure gauge, as well as a filter.

[0200] Preferably, the heat exchange module 3 is connected to the liquid inlet of the high-pressure chamber 6 through the second pipe, and the purification module 5 and the filtration module 4 are installed on the second pipe.

[0201] In this embodiment, the second pipeline is equipped with interfaces for instruments such as flow meters, thermometers, and pressure gauges, as well as a filter.

[0202] 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.

[0203] In this embodiment, two filters are provided.

[0204] Preferably, at least one pump drive module 2 and one heat exchange module 3 are provided.

[0205] Preferably, the pump drive module 2 and the heat exchange module 3 are configured in a one-to-many or many-to-one manner.

[0206] In this embodiment, there are two pump drive modules 2, which are built into the low negative pressure chamber 1 and are connected in parallel; there is one heat exchange module.

[0207] 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 in the cluster and in individual units, and support the parallel construction of vacuum system cluster control by vacuum maintenance modules.

[0208] The above description is merely a preferred embodiment of the present utility model and does not constitute any limitation on the technical scope of the present utility model. Therefore, any minor modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model shall still fall within the scope of the technical solution of the present utility model.

Claims

1. A negative pressure liquid cooling system, characterized by, include: The system includes a low-pressure chamber, a high-pressure chamber, and a coolant replenishment / drainage module. The low-pressure chamber is connected to the high-pressure chamber via a pump-driven module, which delivers coolant from the low-pressure chamber to the high-pressure chamber. The coolant replenishment / drainage module is connected to both the low-pressure chamber and the high-pressure chamber. A heat exchange module and a filter module are also provided between the pump-driven module and the high-pressure chamber. The inlet of the heat exchange module is connected to the pump-driven module, and the outlet of the heat exchange module is connected to the inlet of the filter module. The outlet of the filter module is connected to the inlet of the high-pressure chamber. The load module has its inlet end connected to the liquid supply port of the high-pressure chamber and its outlet end connected to the liquid return port of the low-negative-pressure chamber. A purification module is located between the heat exchange module and the load module; A vacuum maintenance module, wherein the pumping side of the vacuum maintenance module is connected to the low negative pressure chamber, the high pressure chamber and the replenishment / drainage module respectively; The control unit is connected to the low negative pressure chamber, the high pressure chamber, the replenishment and drainage module, the pump drive module, the filtration module, the purification module, the load module, and the vacuum maintenance module, respectively.

2. The 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 drain port 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 connected to the drain port of the low negative pressure chamber through a first pipe, and the pump drive module is installed on the first pipe.

4. The negative pressure liquid cooling system according to claim 1, characterized in that, The heat exchange module is connected to the liquid inlet of the high-pressure chamber through a second pipe, and the purification module and the filtration module are installed on the second pipe.

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 located at the liquid inlet of the high-pressure chamber.

6. A negative pressure liquid cooling system according to claim 3 or 5, characterized in that, The filtration module includes a filter, and at least one filter is provided, which 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, It also includes a condenser module, which is connected to the exhaust side of the vacuum maintenance system, and the condensation reflux interface of the condenser module is connected to the inlet end of the makeup liquid module.

8. A negative pressure liquid cooling system according to claim 7, characterized in that, The condenser module is built into the replenishment and drainage module and is located at the inlet end of the replenishment and drainage module.

9. A negative pressure liquid cooling system according to claim 1, characterized in that, At least one pump drive module and one heat exchange module are provided.

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