Data center negative pressure CDU processing system and method

Abstract

The invention discloses a data center negative pressure CDU processing system and method, the system comprises a vacuum pump, a to-be-cooled piece and a liquid supply box, and the vacuum pump and the to-be-cooled piece are both communicated with the liquid supply box; the liquid supply box is internally provided with a liquid storage cavity, a first vacuum cavity and a second vacuum cavity, the first vacuum cavity and the second vacuum cavity are connected with the liquid storage cavity, the first vacuum cavity and the second vacuum cavity are communicated with the liquid storage cavity in a circulating and alternating mode, one end of the part to be cooled is communicated with the liquid storage cavity, and the other end of the part to be cooled is communicated with the second vacuum cavity. The other end of the liquid storage cavity is connected with the first vacuum cavity and the second vacuum cavity, the first vacuum cavity and the second vacuum cavity are connected with a vacuum pump and communicated with the vacuum pump in a circulating and alternating mode, and the two ends of the liquid storage cavity are further connected with a heat exchange assembly. According to the invention, not only can the leakage of the cooling medium be avoided, but also the stable flow of the CDU can be further ensured through the mode that the two vacuum cavities are alternately communicated with the vacuum pump, namely, the heat dissipation effect of the to-be-cooled part is ensured.

Description

Technical Field

[0001] The present invention belongs to the technical field of data center heat dissipation, and in particular, relates to a data center negative pressure CDU processing system and method. Background Art

[0002] Cooling Distribution Units (CDU) are thermal management devices based on liquid cooling technology. Their core task is to transfer the heat generated in the data center to the cooling medium, and then dissipate the heat from the cooling medium through the cooling system. Liquid-cooled CDU provides an ideal cooling solution for modern data centers due to its high efficiency, energy saving and stability. Most current liquid-cooled CDUs use positive pressure to supply liquid. Once a leak occurs in the system, the cooling medium will leak into the server or other equipment that is not allowed to come into contact with the cooling medium, affecting the operation of the data center. At present, some CDUs adopt negative pressure liquid supply to avoid leakage of cooling medium. However, the applicant has found that although the current negative pressure CDU solves the leakage problem by negative pressure liquid supply, it also has problems such as unstable flow and poor heat dissipation effect. Summary of the invention

[0003] The purpose of the present invention is to overcome the defects of the prior art and provide a data center negative pressure CDU processing system and method, which can not only avoid the leakage of cooling medium, but also further ensure that the CDU has a stable flow rate by alternately connecting two vacuum chambers with a vacuum pump, thereby ensuring the heat dissipation effect of the parts to be cooled.

[0004] The object of the present invention is achieved through the following technical solutions: A data center negative pressure CDU processing system, comprising a vacuum pump, a component to be cooled, and a liquid supply tank, wherein the vacuum pump and the component to be cooled are both connected to the liquid supply tank; The liquid supply box has a liquid storage chamber and a first vacuum chamber and a second vacuum chamber respectively connected to the liquid storage chamber, the first vacuum chamber and the second vacuum chamber are cyclically and alternately connected to the liquid storage chamber, one end of the component to be cooled is connected to the liquid storage chamber, and the other end is respectively connected to the first vacuum chamber and the second vacuum chamber, the first vacuum chamber and the second vacuum chamber are respectively connected to a vacuum pump and cyclically and alternately connected to the vacuum pump, and both ends of the liquid storage chamber are also connected to a heat exchange component; Through this embodiment, a liquid supply box with three chambers is provided to be connected to the part to be cooled and the vacuum pump. The three chambers include a liquid storage chamber that continuously supplies liquid to the part to be cooled. The first vacuum chamber and the second vacuum chamber are alternately circulated and connected to the vacuum pump. The cooling medium after heat exchange with the part to be cooled alternately flows back to the first vacuum chamber and the second vacuum chamber. The vacuum chamber connected to the vacuum pump is connected to the liquid storage chamber, that is, the two vacuum chambers are circulated and alternately evacuated, and the liquid storage chamber is continuously supplied with liquid. The stability of the flow rate in the CDU is maintained while avoiding leakage, and unstable heat dissipation of the part to be cooled that affects the working state is avoided. At the same time, any vacuum chamber connected to the vacuum pump remains disconnected from the liquid storage chamber, even if the liquid storage chamber and the heat exchange component can form an independent heat exchange cycle, further ensuring the stability of the water temperature, shielding the pressure loss of the heat exchange component, and preventing it from participating in the cycle on the side of the part to be cooled, thereby ensuring the heat dissipation effect and achieving the purpose of stable heat dissipation and avoiding leakage.

[0005] In one embodiment, the first vacuum chamber and the second vacuum chamber are respectively located on both sides of the liquid storage chamber, and both are connected to the liquid storage chamber through a first pipeline, and the first pipeline has a first valve to control its opening and closing; Through this embodiment, the connection state between the liquid storage chamber and the two vacuum chambers can be switched through the first valve on the first pipeline. The first vacuum chamber and the second vacuum chamber are distributed on both sides of the liquid storage chamber, so that the cooling medium in the first vacuum chamber or the second vacuum chamber can quickly flow back to the liquid storage chamber.

[0006] In one embodiment, one end of the component to be cooled has a reflux pipeline connected to the liquid supply tank, the reflux pipeline is provided with a first reflux branch connected to the first vacuum chamber and a second reflux branch connected to the second vacuum chamber, and the first reflux branch and the second reflux branch are both provided with a second valve; Through this implementation, that is, the first return branch is used to connect the first vacuum chamber and the part to be cooled, and the second return branch is used to connect the second vacuum chamber and the part to be cooled, the second valves on the first return branch and the second return branch control the opening and closing states of the corresponding return branches, that is, control the cooling medium after heat exchange with the part to be cooled to flow back to the first vacuum chamber or the second vacuum chamber.

[0007] In one embodiment, the first vacuum chamber and the second vacuum chamber are respectively connected to a vacuum pump through vacuum pipelines, and the vacuum pipelines are each provided with a third valve; Through this implementation, the third valve is used to control the opening and closing state of the vacuum pipeline to switch the vacuum chamber connected to the vacuum pump. The single-pump structure not only saves the cost of the CDU, but also avoids the system being cut off due to the two vacuum chambers being in a vacuum state at the same time when the dual pumps are misoperated, thereby improving the safety of the CDU system.

[0008] In one embodiment, a liquid level switch is provided in each of the first vacuum chamber and the second vacuum chamber, and the liquid level switch is electrically connected to the third valve to switch the cyclic alternating connection state between the first vacuum chamber, the second vacuum chamber and the vacuum pump; Through this embodiment, that is, by arranging a liquid level switch in the first vacuum chamber and the second vacuum chamber, the connection state of the two chambers is automatically switched. For example, when the cooling medium flows back from the part to be cooled to the first vacuum chamber, after the cooling medium reaches the switch of the liquid level switch, the liquid level switch is triggered to control the state of the third valve on the vacuum pipeline, so that the second vacuum chamber is connected to the vacuum pump, and at the same time, the connection state of the liquid storage chamber and the two vacuum chambers is switched, so that the cooling medium in the first vacuum chamber flows to the liquid storage chamber, thereby maintaining the flow stability of the CDU system.

[0009] In one embodiment, the heat exchange assembly includes a heat exchanger, one side of the heat exchanger is connected to the two ends of the liquid storage chamber, and the other side of the heat exchanger is connected to the two ends of the cold source to form an independent heat exchange cycle; Through this implementation, any vacuum chamber connected to the vacuum pump always remains disconnected from the liquid storage chamber, so that the liquid storage chamber and the heat exchanger form an independent circulation heat exchange, avoiding the pressure loss of the heat exchange component from participating in the cooling cycle on the side of the part to be cooled, and further ensuring the stable heat dissipation effect of the part to be cooled.

[0010] In one embodiment, a first heat exchange pipeline and a second heat exchange pipeline connected to the heat exchanger are respectively provided at both ends of the liquid storage chamber, a circulation pump and a filter are sequentially provided on the first heat exchange pipeline, a temperature sensor is provided on the pipeline between the liquid supply tank and the target to be cooled, and a fourth valve is provided on the outlet pipeline connected to the cold source and the heat exchanger, and the fourth valve is electrically connected to the temperature sensor; Through this embodiment, a circulating pump is used to pump the cooling medium in the liquid storage chamber from the first heat exchange pipeline to the filter for filtration and then to the heat exchange element for heat exchange with the cold source. The cooling medium after heat exchange is then returned to the liquid storage chamber through the second heat exchange pipeline to form an independent circulation heat exchange. The temperature sensor between the target to be cooled and the liquid supply tank detects the temperature of the cooling medium entering the target to be cooled in real time. If the temperature of the cooling medium is too high, the opening of the fourth valve is controlled to become larger, thereby increasing the flow rate of the cold source entering the heat exchanger, accelerating the cooling of the cooling medium, and thereby ensuring the heat dissipation effect of the target to be cooled.

[0011] In one embodiment, the vacuum pump is further connected to a gas-liquid separator, and the gas-liquid separator is connected to the first vacuum chamber and the second vacuum chamber respectively; According to this embodiment, the gas-liquid separator is arranged to discharge the air sucked by the vacuum pump out of the system when leakage occurs, and the operation of the entire system is not affected even when the connection with the part to be cooled is disconnected.

[0012] In one embodiment, a flow sensor is further provided on the pipeline connecting the component to be cooled and the liquid storage chamber.

[0013] The present invention also provides a method for processing a negative pressure CDU in a data center, comprising: The first vacuum chamber and the second vacuum chamber are cyclically and alternately connected to the vacuum pump, and one of the first vacuum chamber and the second vacuum chamber that is not connected to the vacuum pump is connected to the liquid storage chamber; When the first vacuum chamber is connected to the vacuum pump, the component to be cooled is connected to the first vacuum chamber, and the liquid storage chamber is connected to the second vacuum chamber; When the second vacuum chamber is connected to the vacuum pump, the component to be cooled is connected to the second vacuum chamber, and the liquid storage chamber is connected to the first vacuum chamber.

[0014] The beneficial effects of the present invention are: (1) A liquid supply box with three chambers is provided to be connected to the workpiece to be cooled and the vacuum pump. The three chambers include a liquid storage chamber for continuously supplying liquid to the workpiece to be cooled. The first vacuum chamber and the second vacuum chamber are alternately circulated and connected to the vacuum pump. The cooling medium after heat exchange with the workpiece to be cooled is alternately refluxed to the first vacuum chamber and the second vacuum chamber. This can not only avoid leakage of the cooling medium, but also further ensure that the CDU has a stable flow rate by alternately connecting the two vacuum chambers to the vacuum pump, that is, ensure the heat dissipation effect of the workpiece to be cooled.

[0015] (2) Any vacuum chamber connected to the vacuum pump remains disconnected from the liquid storage chamber, so that the liquid storage chamber and the heat exchange component can form an independent heat exchange cycle, further ensuring the stability of the water temperature, shielding the pressure loss of the heat exchange component, and preventing it from participating in the cycle on the side of the component to be cooled, ensuring the heat dissipation effect, and maintaining stable heat dissipation while avoiding leakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention will be described in more detail below based on embodiments and with reference to the accompanying drawings, wherein: Figure 1 A schematic diagram of the system of the present invention is shown; In the drawings, like reference numerals are used for like parts. The drawings are not necessarily to scale.

[0017] Reference numerals: 1-first vacuum chamber, 2-liquid storage chamber, 3-second vacuum chamber, 4-gas-liquid separator, 5-server, 6-heat exchanger, 7-flow sensor, 8-first electric butterfly valve, 9-second electric butterfly valve. DETAILED DESCRIPTION

[0018] The present invention will be further described below in conjunction with the accompanying drawings.

[0019] The present invention provides a data center negative pressure CDU processing system, such as Figure 1 As shown, it includes a vacuum pump P01, a part to be cooled, and a liquid supply tank, and the vacuum pump P01 and the part to be cooled are both connected to the liquid supply tank; The liquid supply box has a liquid storage chamber 2 and a first vacuum chamber 1 and a second vacuum chamber 3 respectively connected to the liquid storage chamber 2. The first vacuum chamber 1 and the second vacuum chamber 3 are cyclically and alternately connected to the liquid storage chamber 2. One end of the part to be cooled is connected to the liquid storage chamber 2, and the other end is respectively connected to the first vacuum chamber 1 and the second vacuum chamber 3. The first vacuum chamber 1 and the second vacuum chamber 3 are respectively connected to a vacuum pump and cyclically and alternately connected to the vacuum pump. Both ends of the liquid storage chamber 2 are also connected to a heat exchange component. In this embodiment, the part to be cooled is a server 5. In this embodiment, a liquid supply box with three chambers is provided to be connected to the part to be cooled and the vacuum pump P01. The three chambers include a liquid storage chamber 2 that continuously supplies liquid to the part to be cooled. The first vacuum chamber 1 and the second vacuum chamber 3 are alternately circulated and connected to the vacuum pump P01. The cooling medium after heat exchange with the part to be cooled alternately flows back to the first vacuum chamber 1 and the second vacuum chamber 3. The vacuum chamber connected to the vacuum pump P01 is connected to the liquid storage chamber 2, that is, the two vacuum chambers are alternately evacuated, and the liquid storage chamber 2 is continuously supplied with liquid. The stability of the flow in the CDU is maintained while avoiding leakage, and the unstable heat dissipation of the server 5 is avoided to affect the working state. At the same time, any vacuum chamber connected to the vacuum pump P01 remains in a disconnected state with the liquid storage chamber 2, that is, an independent heat exchange cycle can be formed between the liquid storage chamber 2 and the heat exchange component, further ensuring the stability of the water temperature, shielding the pressure loss of the heat exchange component, and preventing it from participating in the cycle on the side of the part to be cooled, ensuring the heat dissipation effect, and achieving the purpose of stable heat dissipation and avoiding leakage. It should be noted that the first vacuum chamber 1 and the second vacuum chamber 3 are cyclically and alternately connected to the vacuum pump P01. When the first vacuum chamber 1 is connected to the vacuum pump P01, the server 5 is connected to the first vacuum chamber 1, and the liquid storage chamber 2 is connected to the second vacuum chamber 3; when the second vacuum chamber 3 is connected to the vacuum pump P01, the server 5 is connected to the second vacuum chamber 3, and the liquid storage chamber 2 is connected to the first vacuum chamber 1. In one embodiment, the vacuum pump P01 is further connected to a gas-liquid separator 4, which is respectively connected to the first vacuum chamber 1 and the second vacuum chamber 3, that is, the gas-liquid separator 4 is configured to discharge the air sucked by the vacuum pump P01 out of the system when leakage occurs, and does not affect the operation of the entire system even when the connection with the server 5 is disconnected; In one embodiment, the first vacuum chamber 1 and the second vacuum chamber 3 are respectively located on both sides of the liquid storage chamber 2, and both are connected to the liquid storage chamber 2 through a first pipeline. The first pipeline has a first valve for controlling its opening and closing, that is, the connection state between the liquid storage chamber 2 and the two vacuum chambers can be switched through the first valve on the first pipeline. The first vacuum chamber 1 and the second vacuum chamber 3 are distributed on both sides of the liquid storage chamber 2, so that the cooling medium in the first vacuum chamber 1 or the second vacuum chamber 3 can quickly flow back to the liquid storage chamber 2; Specifically, Figure 1 As shown, the first valve on the first pipeline between the first vacuum chamber 1 and the liquid storage chamber 2 is a first electric butterfly valve 8, and the first valve on the first pipeline between the second vacuum chamber 3 and the liquid storage chamber 2 is a second electric butterfly valve 9. By switching the states of the first electric butterfly valve 8 and the second electric butterfly valve 9, the connection state between the liquid storage chamber 2 and the two vacuum chambers can be switched, and the liquid storage chamber 2 can be replenished with liquid while being separated from the vacuum chamber connected to the vacuum pump P01; In one embodiment, one end of the server 5 has a reflux pipeline connected to the liquid supply box, and a first reflux branch connected to the first vacuum chamber 1 and a second reflux branch connected to the second vacuum chamber 3 are provided on the reflux pipeline. The first reflux branch and the second reflux branch are both provided with a second valve, that is, the first reflux branch is used to connect the first vacuum chamber 1 and the server 5, and the second reflux branch is used to connect the second vacuum chamber 3 and the server 5. The second valves on the first reflux branch and the second reflux branch control the opening and closing states of the corresponding reflux branches, that is, control the cooling medium after heat exchange with the cooling member to flow back to the first vacuum chamber 1 or the second vacuum chamber 3; Specifically, Figure 1 As shown, the second valves arranged on the first return branch and the second return branch are both electric two-way valves; In one embodiment, the first vacuum chamber 1 and the second vacuum chamber 3 are respectively connected to the vacuum pump P01 through vacuum pipelines, and the vacuum pipelines are provided with a third valve, that is, the third valve is used to control the opening and closing state of the vacuum pipeline to switch the vacuum chamber connected to the vacuum pump P01. The single-pump structure not only saves the cost of the CDU, but also can avoid the system being cut off by causing the two vacuum chambers to be in a vacuum state at the same time when the double pumps are misoperated, thereby improving the safety of the CDU system; Specifically, an electric three-way valve V101 is provided on the vacuum pipeline connecting the first vacuum chamber 1 and the vacuum pump, and an electric three-way valve V102 is provided on the vacuum pipeline connecting the second vacuum chamber 3 and the vacuum pump, that is, the vacuum chamber connected to the vacuum pump P01 can be switched by controlling the connection states of the electric three-way valve V101 and the electric three-way valve V102; In one embodiment, a liquid level switch is provided in both the first vacuum chamber 1 and the second vacuum chamber 3, and the liquid level switch is electrically connected to the third valve to switch the cyclic alternating connection state between the first vacuum chamber 1 and the second vacuum chamber 3 and the vacuum pump P01, that is, the connection state of the two chambers is automatically switched by providing a liquid level switch in the first vacuum chamber 1 and the second vacuum chamber 3. For example, when the cooling medium flows back from the part to be cooled to the first vacuum chamber 1, after the cooling medium reaches the switch of the liquid level switch, the liquid level switch is triggered to control the state of the electric three-way valve V101 and the electric three-way valve V102 on the vacuum pipeline, so that the second vacuum chamber 3 is connected to the vacuum pump P01, and at the same time, the connection state of the liquid storage chamber 2 and the two vacuum chambers is switched, so that the cooling medium in the first vacuum chamber 1 flows to the liquid storage chamber 2, and the flow stability of the CDU system is maintained; Specifically, Figure 1 As shown, the first vacuum chamber 1 is evacuated, that is, the valve V101 between the first vacuum chamber 1 and the vacuum pump P01 is opened, AB and B of V101 are connected, the first electric butterfly valve 8 is opened, and the second electric butterfly valve 9 is closed. The cooling medium enters the server 5 from the liquid storage chamber 2 through the flow sensor 7, and then enters the first vacuum chamber 1 after passing through the server 5. When the liquid level in the first vacuum chamber 1 reaches the position of the liquid level switch LS01, the liquid level switch LS01 is triggered to switch the vacuum chamber connected to the vacuum pump P01, that is, the valve V101 between the first vacuum chamber 1 and the vacuum pump P01 is closed, AB and A of V101 are connected, and the first vacuum chamber 1 and the liquid storage chamber 2 are opened at the same time. The electric butterfly valve V301 between the first vacuum chamber 1 and the vacuum pump P01 is opened, and the electric butterfly valve V302 is closed, so that the cooling medium in the first vacuum chamber 1 flows into the liquid storage chamber 2, and the valve V102 between the second vacuum chamber 3 and the vacuum pump P01 is opened, so that AB and B of V102 are connected, so that the CDU is evacuated in the second vacuum chamber 3, the second electric butterfly valve 9 is opened, and the first electric butterfly valve 8 is closed, so that the cooling medium enters the server 5 after passing through the flow sensor 7 from the liquid storage chamber 2, and the cooling medium enters the second vacuum chamber 3 after passing through the server 5. When the liquid level in the second vacuum chamber 3 reaches the liquid level switch LS02, the liquid level switch LS02 is triggered to evacuate the first vacuum chamber 1, and this cycle is repeated; In one embodiment, Figure 1 As shown, the heat exchange component includes a heat exchanger 6, one side of the heat exchanger 6 is connected to the two ends of the liquid storage chamber 2, and the other side is connected to the two ends of the cold source to form an independent heat exchange cycle. The heat exchanger 6 is a plate heat exchange structure, that is, any vacuum chamber connected to the vacuum pump always remains disconnected from the liquid storage chamber 2, so that the liquid storage chamber 2 and the heat exchanger 6 form an independent cycle heat exchange, avoiding the pressure loss of the heat exchange component from participating in the cooling cycle on one side of the part to be cooled, and further ensuring the stable heat dissipation effect of the part to be cooled; In one embodiment, Figure 1As shown, the two ends of the liquid storage chamber 2 are respectively provided with a first heat exchange pipeline and a second heat exchange pipeline connected to the heat exchanger 6, a circulation pump P02 and a filter are sequentially arranged on the first heat exchange pipeline, a temperature sensor is arranged on the pipeline between the liquid supply tank and the target to be cooled, and a fourth valve is arranged on the outlet pipeline connected to the cold source and the heat exchanger 6, and the fourth valve is electrically connected to the temperature sensor; It should be noted that the cooling medium in the liquid storage chamber 2 is pumped from the first heat exchange pipeline to the filter by the circulation pump P02, and then enters the heat exchange element to exchange heat with the cold source. The cooling medium after heat exchange is then returned to the liquid storage chamber 2 through the second heat exchange pipeline, forming an independent circulation heat exchange. The temperature sensor between the server 5 and the liquid supply tank detects the temperature of the cooling medium entering the server 5 in real time. If the temperature of the cooling medium is too high, the opening of the fourth valve is controlled to be larger, the flow rate of the cold source entering the heat exchanger 6 is increased, and the cooling of the cooling medium is accelerated, thereby ensuring the heat dissipation effect of the server 5; Specifically, in this embodiment, Figure 1 As shown, the fourth valve is an electric ball valve V203, a temperature sensor TT01 is provided on the pipeline between the liquid supply tank and the server 5, a temperature sensor TT02 is provided on the return pipeline of the server 5, a temperature sensor TT03 is provided on the first heat exchange pipeline connecting the liquid supply cavity with the heat exchanger 6, a temperature sensor TT04 is provided on the second heat exchange pipeline connecting the heat exchanger 6 with the liquid supply cavity, a temperature sensor TT06 is provided on the pipeline from the cold source to the heat exchanger 6, and a temperature sensor TT05 is provided on the pipeline from the heat exchanger 6 to the cold source. It should be noted that the temperature sensor TT01 is used to monitor the temperature of the cooling medium entering the server 5, and the temperature sensor TT02 can monitor the temperature of the cooling medium leaving the server 5, and monitor whether the inlet and outlet temperatures of the server 5 are normal; the temperature sensor TT04 is used to monitor the temperature of the cooling medium from leaving the heat exchanger 6 to the liquid storage chamber 2, the temperature sensor TT03 is used to monitor the temperature of the cooling medium before entering the heat exchanger 6, the temperature sensor TT06 is used to monitor the temperature of the cold source side entering the heat exchanger 6, and the temperature sensor TT05 is used to monitor the temperature of the cold source side exiting the heat exchanger 6, that is, the temperature of each node of the entire system is monitored. For example, when the temperature TT01 entering the server 5 is monitored to exceed the preset value, the opening of the electric ball valve V203 is adjusted, the opening of V203 is increased, the water inlet flow on the cold source side is increased, and the corresponding TT04 temperature drops, thereby reducing the temperature in the liquid storage chamber 2, and the corresponding TT01 water supply temperature drops, and vice versa, that is, the independent heat exchange cycle formed can timely adjust the temperature of the cooling medium of the system to ensure the heat dissipation effect of the server 5; The present invention also provides a method for processing a negative pressure CDU in a data center, comprising: The first vacuum chamber and the second vacuum chamber are cyclically and alternately connected to the vacuum pump, and one of the first vacuum chamber and the second vacuum chamber that is not connected to the vacuum pump is connected to the liquid storage chamber; When the first vacuum chamber is connected to the vacuum pump, the component to be cooled is connected to the first vacuum chamber, and the liquid storage chamber is connected to the second vacuum chamber; When the second vacuum chamber is connected to the vacuum pump, the part to be cooled is connected to the second vacuum chamber, and the liquid storage chamber is connected to the first vacuum chamber; That is, the first vacuum chamber and the second vacuum chamber are alternately circulated and connected to the vacuum pump, and the cooling medium after heat exchange with the part to be cooled is alternately refluxed to the first vacuum chamber and the second vacuum chamber, which can not only avoid leakage of the cooling medium, but also further ensure that the CDU has a stable flow rate by having the two vacuum chambers alternately connected to the vacuum pump, that is, ensure the heat dissipation effect of the part to be cooled. At the same time, any vacuum chamber connected to the vacuum pump remains unconnected with the liquid storage chamber, so that the liquid storage chamber and the heat exchange component can form an independent heat exchange cycle, further ensure the stability of the water temperature, shield the pressure loss of the heat exchange component, and avoid it from participating in the cycle on one side of the part to be cooled, thereby ensuring the heat dissipation effect and maintaining stable heat dissipation while avoiding leakage.

[0020] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "bottom", "top", "front", "back", "inside", "outside", "left", "right", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0021] Although the present invention is described herein with reference to specific embodiments, it should be understood that these embodiments are merely examples of the principles and applications of the present invention. It should therefore be understood that many modifications may be made to the exemplary embodiments and that other arrangements may be devised without departing from the spirit and scope of the present invention as defined by the appended claims. It should be understood that the various dependent claims and features described herein may be combined in a manner different from that described in the original claims. It should also be understood that features described in conjunction with individual embodiments may be used in other described embodiments.

Claims

1. A data center negative pressure CDU processing system, characterized in that: It includes a vacuum pump, a part to be cooled and a liquid supply tank, wherein the vacuum pump and the part to be cooled are both connected to the liquid supply tank; Among them, the liquid supply box has a liquid storage chamber and a first vacuum chamber and a second vacuum chamber respectively connected to the liquid storage chamber, the first vacuum chamber and the second vacuum chamber are cyclically and alternately connected to the liquid storage chamber, one end of the part to be cooled is connected to the liquid storage chamber, and the other end is respectively connected to the first vacuum chamber and the second vacuum chamber, the first vacuum chamber and the second vacuum chamber are respectively connected to a vacuum pump and cyclically and alternately connected to the vacuum pump, and the two ends of the liquid storage chamber are also connected to a heat exchange component.

2. A data center negative pressure CDU processing system according to claim 1, characterized in that: The first vacuum chamber and the second vacuum chamber are respectively located on both sides of the liquid storage chamber, and both are connected to the liquid storage chamber through a first pipeline. The first pipeline is provided with a first valve for controlling its opening and closing.

3. A data center negative pressure CDU processing system according to claim 1, characterized in that: One end of the part to be cooled has a reflux pipeline connected to the liquid supply box, and the reflux pipeline is provided with a first reflux branch connected to the first vacuum chamber and a second reflux branch connected to the second vacuum chamber, and the first reflux branch and the second reflux branch are both provided with a second valve.

4. A data center negative pressure CDU processing system according to claim 1, characterized in that: The first vacuum chamber and the second vacuum chamber are respectively connected to a vacuum pump through vacuum pipelines, and the vacuum pipelines are each provided with a third valve.

5. A data center negative pressure CDU processing system according to claim 4, characterized in that: The first vacuum chamber and the second vacuum chamber are both provided with a liquid level switch, and the liquid level switch is electrically connected to the third valve to switch the cyclic alternating connection state between the first vacuum chamber, the second vacuum chamber and the vacuum pump.

6. A data center negative pressure CDU processing system according to claim 1, characterized in that: The heat exchange component comprises a heat exchanger, one side of the heat exchanger is connected to the two ends of the liquid storage chamber, and the other side of the heat exchanger is connected to the two ends of the cold source to form an independent heat exchange cycle.

7. A data center negative pressure CDU processing system according to claim 6, characterized in that: A first heat exchange pipeline and a second heat exchange pipeline connected to the heat exchanger are respectively arranged at both ends of the liquid storage chamber, a circulation pump and a filter are sequentially arranged on the first heat exchange pipeline, a temperature sensor is arranged on the pipeline between the liquid supply tank and the target to be cooled, and a fourth valve is arranged on the outlet pipeline connected to the cold source and the heat exchanger, and the fourth valve is electrically connected to the temperature sensor.

8. A data center negative pressure CDU processing system according to claim 1, characterized in that: The vacuum pump is also connected to a gas-liquid separator, and the gas-liquid separator is connected to the first vacuum chamber and the second vacuum chamber respectively.

9. A data center negative pressure CDU processing system according to claim 1, characterized in that: A flow sensor is also provided on the pipeline connecting the component to be cooled and the liquid storage chamber.

10. A method for processing a negative pressure CDU in a data center, based on the negative pressure CDU processing system in a data center according to any one of claims 1 to 9, characterized in that: include: The first vacuum chamber and the second vacuum chamber are cyclically and alternately connected to the vacuum pump, and one of the first vacuum chamber and the second vacuum chamber that is not connected to the vacuum pump is connected to the liquid storage chamber; When the first vacuum chamber is connected to the vacuum pump, the component to be cooled is connected to the first vacuum chamber, and the liquid storage chamber is connected to the second vacuum chamber; When the second vacuum chamber is connected to the vacuum pump, the component to be cooled is connected to the second vacuum chamber, and the liquid storage chamber is connected to the first vacuum chamber.

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