Pressure regulating system, submerged liquid cooling cabinet and pressure regulating method

Abstract

The present application relates to a kind of pressure regulating system, immersion liquid cooling cabinet and pressure regulating method, pressure regulating system is used to adjust the pressure in cabinet, it includes condenser, fan and liquid tank, condenser is used to form cooling circuit with cabinet, to make the gas in cabinet be liquefied into condenser, and the cooling liquid in condenser can flow into cabinet;Fan is used to be set on cooling circuit, fan is used to provide suction to draw the gas in cabinet into condenser;Liquid tank has cavity, cavity can selectively communicate with condenser, in the state that cavity and condenser communicate, the cooling liquid in condenser can flow into cavity.In immersion liquid cooling cabinet, it includes cabinet and the above-mentioned pressure regulating system, cabinet and condenser form cooling circuit, fan is set on cooling circuit.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of liquid cooling, in particular to a pressure regulating system, an immersion liquid cooling cabinet and a pressure regulating method. BACKGROUND

[0002] A server usually adopts an immersion liquid cooling cabinet to achieve heat dissipation. Electronic devices such as servers and switches are immersed in a cooling liquid arranged in the cabinet, and the heat generated by the electronic devices in the cabinet is transferred to the outside of the cabinet through the circulation of the cooling liquid, so as to reduce the temperature of the electronic devices in the cabinet. However, during the liquid cooling process, the thermal expansion and contraction of the cooling liquid causes the volume of the cooling liquid to change, thereby causing the gas pressure in the upper cavity of the cabinet to fluctuate, which easily leads to an increase in the pressure in the cabinet. Since the pressure bearing capacity of the cabinet is limited, a continuous increase in the pressure in the cabinet easily leads to deformation and expansion of the cabinet, which easily causes leakage of the cooling liquid and other problems. SUMMARY

[0003] Therefore, it is necessary to provide a pressure regulating system for solving the problems of cabinet deformation and expansion.

[0004] A pressure regulating system for regulating the pressure in a cabinet, comprising:

[0005] a condenser for forming a cooling loop with the cabinet, so that the gas in the cabinet is liquefied in the condenser, and the cooling liquid in the condenser can flow into the cabinet;

[0006] a fan arranged on the cooling loop, the fan being configured to provide suction to draw the gas in the cabinet into the condenser;

[0007] a liquid storage tank having a cavity, the cavity being selectively communicated with the condenser, and in the state that the cavity and the condenser are communicated, the cooling liquid in the condenser can flow into the cavity.

[0008] In one embodiment, the liquid storage tank is a bellows with two closed ends, and the bellows can be extended and retracted by an adjusting assembly to adjust the volume of the cavity.

[0009] In one embodiment, the adjusting assembly comprises a driving source, a lead screw and a nut, the output end of the driving source is connected to the lead screw, the axis direction of the lead screw is parallel to the extension direction of the bellows, the nut is sleeved on the lead screw and threadedly matched with the lead screw, and the nut is connected to the liquid storage tank.

[0010] In one embodiment, a limiting piece is mounted on the lead screw, and the limiting piece can abut against the nut to limit the movement range of the nut.

[0011] In one embodiment, two limiting members are provided, which are spaced apart along the axial direction of the lead screw, and the nut is located between the two limiting members.

[0012] In one embodiment, an exhaust manifold compartment is further provided on the side of the fan away from the condenser, the exhaust manifold compartment being used to communicate with the exhaust ports of the plurality of cabinets.

[0013] In one embodiment, multiple fans are provided, and each fan corresponds to a specific cabinet. Each fan is used to draw gas from the corresponding cabinet into the condenser.

[0014] The present invention also provides an immersion liquid-cooled cabinet, including a cabinet and the pressure regulating system described above, wherein the cooling circuit is formed between the cabinet and the condenser, and the fan is disposed on the cooling circuit.

[0015] The present invention also provides a pressure regulation method, which uses the pressure regulation system described above to regulate the pressure inside the cabinet, including the following steps:

[0016] S1. Connect the condenser to the cabinet to allow the coolant to circulate in the cooling circuit;

[0017] S2. Turn on the fan between the condenser and the cabinet, so that the fan can accelerate the drawing of gas from the cabinet into the condenser;

[0018] S3. When the gas pressure of the condenser is greater than the preset pressure, the liquid storage tank is connected to the condenser, so that part of the coolant in the condenser flows into the liquid storage tank for temporary storage.

[0019] In one embodiment, during step S2, a first current gas pressure value inside the cabinet is measured by a first pressure sensor. When the first current gas pressure value is greater than a first preset pressure value, the fan is turned on, and the fan speed is adjusted according to the current gas pressure value.

[0020] During step S3, the second current gas pressure value inside the condenser is measured by the second pressure sensor. When the second current gas pressure value is greater than the second preset pressure value, the condenser and the liquid storage tank are connected.

[0021] In one embodiment, during step S3, the telescopic dimension of the liquid storage tank is adjusted according to the second current gas pressure value to adjust the volume of the cavity.

[0022] In one embodiment, the fan speed is adjusted based on the current gas pressure value inside the cabinet and the current pressure value in the outlet manifold compartment connecting the plurality of cabinets and the condenser.

[0023] The beneficial effects of this invention are:

[0024] The aforementioned pressure regulation system connects the condenser and the cabinet. The coolant in the cabinet vaporizes and flows into the condenser, which liquefies the incoming gas, reducing the amount of gas in the cabinet and thus lowering the pressure. If the natural flow velocity of the gas in the cabinet is insufficient to meet the required flow rate, a fan can be installed between the cabinet and the condenser to provide suction, drawing the gas from the cabinet into the condenser, increasing the flow velocity, and causing more gas to liquefy, thereby reducing the pressure inside the cabinet. However, after the condenser has been used for a preset time, the coolant level rises. Since the condenser has a limited capacity, the increased coolant level leads to excessive gas pressure, preventing further gas flow from the cabinet into the condenser for liquefaction. Therefore, when the pressure in the condenser is too high, the cavity of the liquid receiver is connected to the condenser, allowing the coolant in the condenser to flow into the cavity of the liquid receiver. This reduces the coolant content in the condenser, regulates its volume, and lowers the gas pressure. Gas from the external cabinet can also flow into the condenser. The pressure regulation system provided by this invention uses the condenser, fan, and liquid receiver in coordination to jointly regulate the pressure inside the cabinet. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the structure of an immersion liquid-cooled cabinet according to an embodiment of the present invention;

[0026] Figure 2 This is a schematic diagram of the connection between the regulating component and the liquid storage tank according to an embodiment of the present invention;

[0027] Figure 3 This is a schematic diagram of the structure of the adjusting component that drives the liquid storage tank to extend according to an embodiment of the present invention;

[0028] Figure 4 This is a schematic diagram of the structure of an immersion liquid-cooled cabinet according to an embodiment of the present invention;

[0029] Figure 5 This is a schematic diagram of the structure of an immersion liquid-cooled cabinet according to an embodiment of the present invention;

[0030] Figure 6 A flowchart illustrating the pressure regulation method provided in an embodiment of the present invention;

[0031] Figure 7This is a flowchart illustrating the process of adjusting the pressure inside multiple cabinets when they are connected to a condenser, as provided in an embodiment of the present invention.

[0032] In the picture:

[0033] 100. Server rack; 110. First pressure sensor;

[0034] 200. Condenser; 210. Second pressure sensor;

[0035] 300. Fan;

[0036] 400. Liquid storage tank; 410. Corrugated pipe; 420. First end face; 430. Second end face;

[0037] 500. Adjustment component; 510. Drive source; 520. Lead screw; 530. Nut;

[0038] 600. Limiting components;

[0039] 700, Exhaust manifold compartment;

[0040] 800. Circulating pump. Detailed Implementation

[0041] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of the present invention. However, the present invention can be practiced in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0042] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention 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 invention.

[0043] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0044] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0045] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0046] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0047] Given a fixed cabinet volume, pressure fluctuations within the cabinet have two main causes. First, the coolant expands and contracts with temperature changes. When it absorbs heat, the space occupied by the coolant increases, reducing the space available for gas at the top of the cabinet and thus increasing the gas pressure. Second, some of the coolant evaporates into a gaseous state after absorbing heat, increasing the amount of gas at the top of the cabinet. This increase in gas quantity, coupled with the reduced space available for gas at the top, further contributes to the increased gas pressure at the top of the cabinet.

[0048] This invention provides a pressure regulating system for regulating the pressure inside a cabinet 100, such as... Figure 1 As shown, the pressure regulating system includes a condenser 200, a fan 300, and a coolant tank 400. The condenser 200 forms a cooling circuit with the cabinet 100, allowing the gas inside the cabinet 100 to be transferred to the condenser 200 for liquefaction, and the coolant in the condenser 200 can flow into the cabinet 100. The fan 300 is installed on the cooling circuit and provides suction to draw the gas inside the cabinet 100 into the condenser 200. The coolant tank 400 has a cavity that can be selectively connected to the condenser 200. When the cavity and the condenser 200 are connected, the coolant in the condenser 200 can flow into the cavity.

[0049] The aforementioned pressure regulation system connects the condenser 200 and the rack 100. The coolant in the rack 100 vaporizes and flows into the condenser 200. The condenser 200 liquefies the incoming gas, reducing the amount of gas in the rack 100 and thus lowering the pressure within it. If the natural flow velocity of the gas in the rack 100 is insufficient to meet the required flow rate, a fan 300 can be installed between the rack 100 and the condenser 200 to provide suction, drawing the gas from the rack 100 into the condenser 200, increasing the gas flow velocity, liquefying more gas, and further reducing the pressure within the rack 100. However, after the condenser 200 has been in use for a preset time, the coolant level rises. Since the condenser 200 has a limited volume, the increased coolant level leads to excessive gas pressure, preventing further gas flow into the condenser 200 for liquefaction. Therefore, when the pressure in the condenser 200 is too high, the cavity of the liquid storage tank 400 is connected to the condenser 200, allowing the coolant in the condenser 200 to flow into the cavity of the liquid storage tank 400. This reduces the coolant content in the condenser 200, regulates its volume, and lowers the gas pressure within it. Gas from the external cabinet 100 can also flow into the condenser 200. The pressure regulation system provided by this invention, through the coordinated operation of the condenser 200, the fan 300, and the liquid storage tank 400, jointly regulates the pressure within the cabinet 100.

[0050] It should be noted that the increased coolant capacity in condenser 200 reduces the space for gas in condenser 200, thus increasing the gas pressure in condenser 200. When the gas pressure at the top of condenser 200 exceeds the gas pressure inside cabinet 100, gas will no longer enter condenser 200. Therefore, at this point, condenser 200 and liquid storage tank 400 are connected, diverting some of the coolant in condenser 200 to liquid storage tank 400 for temporary storage. This reduces the coolant capacity in condenser 200, lowers the coolant level in condenser 200, increases the space for gas in condenser 200, and thus reduces the gas pressure in condenser 200.

[0051] Specifically, such as Figure 2 and Figure 3 As shown, the pressure regulating system also includes an adjusting component 500. The liquid reservoir 400 is a bellows 410 closed at both ends. The liquid reservoir 400 can be extended and retracted by the adjusting component 500 to adjust the volume of the cavity. The liquid reservoir 400 is configured as a bellows 410 closed at both ends, which has an extendable / retractable state. When it extends, the volume of the cavity increases, facilitating the holding of more coolant. When it retracts, it not only reduces the volume of the cavity but also discharges coolant from the cavity through the retraction of the bellows 410. The volume of the cavity is adjusted by using the adjusting component 500 to drive the bellows 410 to extend and retract.

[0052] In some embodiments, such as Figure 2 and Figure 3 As shown, the liquid storage tank 400 includes a bellows 410, a first end face 420, and a second end face 430. The first end face 420 and the second end face 430 are respectively sealed at both ends of the bellows 410. The bellows 410 has a cavity that selectively communicates with the condenser 200. An adjusting component 500 is connected to the second end face 430. The bellows 410 has a cavity. By connecting the adjusting component 500 to the second end face 430, the adjusting component 500 drives the second end face 430 to move relative to the first end face 420, thereby realizing the expansion and contraction of the bellows 410 and adjusting the volume of the cavity. In some embodiments, the condenser 200 communicates with the cavity through a pipe passing through the first end face 420. In some embodiments, the condenser 200 communicates with the cavity by extending into the bellows 410 through a pipe. Both of these methods can achieve communication between the condenser 200 and the cavity, and the specific method is determined according to the actual installation situation.

[0053] In some embodiments, the adjustment component 500 can be connected to the outer wall of the bellows 410, which can also realize the expansion and contraction of the bellows 410. The specific connection position can be adjusted according to the actual operation needs.

[0054] Specifically, such as Figure 2 and Figure 3As shown, the adjusting assembly 500 includes a drive source 510, a lead screw 520, and a nut 530. The output end of the drive source 510 is connected to the lead screw 520. The axial direction of the lead screw 520 is parallel to the extension / retraction direction of the liquid storage tank 400. The nut 530 is sleeved on the lead screw 520 and threadedly engaged with it. The nut 530 is connected to the liquid storage tank 400. By connecting the nut 530 to the second end face 430, the movement of the nut 530 along the axial direction of the lead screw 520 pulls the second end face 430 along the axial direction of the lead screw 520, thereby achieving the extension / retraction of the bellows 410.

[0055] In some embodiments, the adjusting component 500 can be a slide rail slider structure, with one of the sliders connected to the second end face 430. The slide rail extends along the extension and retraction direction of the bellows 410, and the bellows 410 is extended and retracted by the sliding of the slider on the slide rail.

[0056] Specifically, such as Figure 2 and Figure 3 As shown, the pressure regulating system also includes a limiting member 600 mounted on the lead screw 520. The limiting member 600 abuts against the nut 530 to limit the range of movement of the nut 530. By installing the limiting member 600 on the lead screw 520, the range of movement of the nut 530 is limited. When the nut 530 moves to a preset position along the axis of the lead screw 520, the nut 530 abuts against the limiting member 600, thereby limiting further movement of the nut 530. In some embodiments, the limiting member 600 is a limit sensor, which precisely controls the range of movement of the nut 530. In some embodiments, the limiting member 600 is a stop, as long as the stop can abut against the nut 530 to limit further movement of the nut 530.

[0057] More specifically, such as Figure 2 and Figure 3 As shown, two limiting members 600 are provided, spaced apart along the axis of the lead screw 520, with the nut 530 located between the two limiting members 600. By providing two limiting members 600 and positioning the slider between them, the movement range of the nut 530 is limited. When the nut 530 abuts against either limiting member 600, it effectively restricts its further movement.

[0058] Specifically, please return to the reference. Figure 1In some embodiments, a first pressure sensor 110 is installed on the rack 100 to measure the air pressure inside the rack 100; in some embodiments, a second pressure sensor 210 is installed on the condenser 200 to measure the air pressure inside the condenser 200. In some embodiments, a first pressure sensor 110 is installed on the rack 100 to measure the air pressure inside the rack 100, and a second pressure sensor 210 is installed on the condenser 200 to measure the air pressure inside the condenser 200.

[0059] like Figure 4 As shown, in some embodiments, the pressure regulation system further includes an exhaust manifold 700 disposed on the side of the fan 300 away from the condenser 200. The exhaust manifold 700 is used to communicate with the exhaust ports of multiple cabinets 100. The exhaust ports of multiple cabinets 100 are all connected to the exhaust manifold 700, allowing gas from the multiple cabinets 100 to flow into the exhaust manifold 700 for temporary storage. A fan 300 is then disposed between the exhaust manifold 700 and the condenser 200, and the fan 300 is used to draw gas from the exhaust manifold 700 into the condenser 200.

[0060] like Figure 5 As shown, in some embodiments, multiple fans 300 are provided, with each fan 300 corresponding to a multiple cabinet 100. Each fan 300 is used to draw gas from the corresponding cabinet 100 into the condenser 200. Gas from multiple cabinets 100 can flow into one condenser 200, and the multiple fans 300 corresponding to multiple cabinets 100, each fan 300 being used to draw gas from the corresponding cabinet 100 into the condenser 200, reduces the pressure within each cabinet 100.

[0061] like Figure 5 As shown, in some embodiments, a gas outlet manifold 700 is provided in multiple fans 300 and condensers 200 to temporarily store the gas extracted by the fans 300.

[0062] This invention also provides an immersion liquid-cooled cabinet, such as... Figure 1 As shown, the immersion liquid-cooled cabinet includes a cabinet 100 and the aforementioned pressure regulating system. A cooling loop is formed between the cabinet 100 and the condenser 200, and a fan 300 is installed on the cooling loop. Servers, switches, and other electronic equipment are immersed in the cabinet 100. The condenser 200 of the pressure regulating system is connected to the cabinet 100, thus forming a cooling loop. Gas inside the cabinet 100 can flow into the condenser 200 and liquefy, while the coolant in the condenser 200 can return to the cabinet 100.

[0063] Specifically, such as Figure 1 As shown, a circulation pump 800 is installed on the cooling circuit. The circulation pump 800 is used to pump the coolant in the condenser 200 into the cabinet 100, so that the coolant circulates between the cabinet 100 and the condenser 200.

[0064] The present invention also provides a pressure regulation method, such as Figure 6 As shown, adjusting the pressure inside the cabinet 100 using the aforementioned pressure regulating system includes the following steps:

[0065] S1. Connect the condenser 200 to the cabinet 100 to allow the coolant to circulate in the cooling circuit;

[0066] S2. Turn on the fan 300 between the condenser 200 and the cabinet 100 to accelerate the drawing of gas from the cabinet 100 into the condenser 200.

[0067] S3. When the gas pressure of the condenser 200 is greater than the preset pressure, connect the liquid storage tank 400 to the condenser 200 so that the liquid in the condenser 200 flows into the liquid storage tank 400 for temporary storage.

[0068] The aforementioned pressure regulation method involves first connecting the condenser 200 and the cabinet 100. The coolant in the cabinet 100 vaporizes and flows into the condenser 200. The condenser 200 liquefies the incoming gas, reducing the amount of gas in the cabinet 100 and thus lowering the pressure within it. Then, the fan 300 is turned on, using its suction force to draw the gas from the cabinet 100 into the condenser 200, increasing the gas flow rate and causing more gas to liquefy, further reducing the pressure within the cabinet 100. When the pressure in the condenser 200 becomes too high, the cavity of the liquid storage tank 400 is connected to the condenser 200. Coolant in the condenser 200 can then flow into the cavity of the liquid storage tank 400, reducing the coolant content in the condenser 200, regulating its volume, and lowering the gas pressure. Gas from the external cabinet 100 can also flow into the condenser 200. The pressure regulation method provided in this embodiment of the invention uses multiple steps to determine the pressure. First, the condenser 200 is used to reduce the pressure inside the cabinet 100. When the pressure reduction effect of the condenser 200 is not obvious, the airflow is accelerated by the fan to further reduce the pressure inside the cabinet 100. When the pressure reduction effect of the fan 300 is not obvious, the liquid storage tank 400 and the condenser 200 are connected to further reduce the pressure inside the cabinet 100. Multiple pressure reduction steps work together to regulate the pressure inside the cabinet 100.

[0069] Specifically, such as Figure 6As shown, in step S2, the first current gas pressure value inside the cabinet 100 is measured by the first pressure sensor 110. When the first current gas pressure value is greater than the first preset pressure value, the fan 300 is turned on, and the speed of the fan 300 is adjusted according to the current gas pressure value. In step S3, the second current gas pressure value inside the condenser 200 is measured by the second pressure sensor 210. When the second current gas pressure value is greater than the second preset pressure value, the condenser 200 and the liquid storage tank 400 are connected. By measuring the first current gas pressure value by the first pressure sensor 110, it is determined whether the fan 300 needs to be turned on. When the first current gas pressure value is greater than the first preset pressure value, it indicates that the gas flow rate in the cooling circuit is slow, and the fan 300 needs to be turned on to increase the gas flow rate. The speed of the fan 300 is adjusted according to the first current gas pressure value. The second pressure sensor 210 measures the second current gas pressure value to determine whether it is necessary to connect the liquid storage tank 400 and the condenser 200. When the second current gas pressure value is greater than the second preset pressure value, it indicates that the gas pressure in the condenser 200 is too high and it is necessary to connect the liquid storage tank 400 and the condenser 200 to reduce the pressure in the condenser 200.

[0070] Specifically, in step S3, the extension and retraction dimensions of the liquid storage tank 400 are adjusted according to the second current gas pressure value to adjust the volume of the cavity. Based on the second current gas pressure value measured by the second pressure sensor 210, the extension and retraction dimensions of the liquid storage tank 400 are adjusted. When the second current gas pressure value is greater than the second preset pressure value, the liquid storage tank 400 and the condenser 200 are connected, thereby adjusting the volume of the cavity to facilitate the holding of a preset capacity of coolant, thus reducing the pressure in the condenser 200. Furthermore, based on the second current gas pressure value, the movement distance of the nut is determined, which in turn determines the size of the adjusted cavity volume.

[0071] Specifically, such as Figure 7 As shown, the fan speed is adjusted based on the current gas pressure value inside the cabinet 100 and the current pressure value inside the exhaust manifold 700 connecting multiple cabinets 100 and the condenser 200. When multiple cabinets 100 are connected to a single condenser 200, the exhaust ports of multiple cabinets 100 are first connected to the exhaust manifold 700, and then the exhaust manifold 700 is connected to the condenser 200. Based on the current gas pressure values ​​inside the multiple cabinets 100 and the exhaust manifold 700, the fan speed is adjusted, so that the fan 300 and the condenser 200 cooperate to jointly regulate the pressure values ​​inside the multiple cabinets 100.

[0072] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0073] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this invention patent should be determined by the appended claims.

Claims

1. A pressure regulating system for regulating pressure within a cabinet (100), characterized by, The application relates to a refrigeration system, which comprises: a condenser (200) for forming a cooling loop with the cabinet (100) to liquefy the gas in the cabinet (100) into the condenser (200), and the cooling liquid in the condenser (200) can flow into the cabinet (100); a fan (300) arranged on the cooling loop, which is used to provide suction force to suck the gas in the cabinet (100) into the condenser (200); a liquid storage tank (400) with a cavity, which can selectively communicate with the condenser (200), and the cooling liquid in the condenser (200) can flow into the cavity when the cavity communicates with the condenser (200); a regulating assembly (500) is further arranged, the liquid storage tank (400) is a bellows with two closed ends, and the cavity volume can be adjusted by the regulating assembly (500); a first pressure sensor (110) is arranged on the cabinet (100), which is used to measure the gas pressure in the cabinet (100), and the rotating speed of the fan (300) is adjusted according to the first current gas pressure value measured by the first pressure sensor (110); a second pressure sensor (210) is arranged on the condenser (200), which is used to measure the gas pressure in the condenser (200), and the telescopic size of the liquid storage tank (400) is adjusted according to the second current gas pressure value measured by the second pressure sensor (210).

2. The pressure regulating system of claim 1, wherein, The regulating assembly (500) comprises a driving source (510), a lead screw (520) and a nut (530), the output end of the driving source (510) is connected to the lead screw (520), the axis direction of the lead screw (520) is parallel to the telescopic direction of the bellows, the nut (530) is sleeved on the lead screw (520) and is in threaded cooperation with the lead screw (520), and the nut (530) is connected to the liquid storage tank (400).

3. The pressure regulating system of claim 2, wherein, A limiting piece (600) is further arranged on the lead screw (520), which can abut against the nut (530) to limit the movement range of the nut (530).

4. The pressure regulating system of claim 3, wherein, Two limiting pieces (600) are arranged, and the two limiting pieces (600) are arranged along the axis direction of the lead screw (520), and the nut (530) is located between the two limiting pieces (600).

5. The pressure regulating system of claim 1, wherein, An air outlet manifold bin (700) is arranged on the side, away from the condenser (200), of the fan (300), which is used to communicate with the air outlets of the plurality of cabinets (100).

6. The pressure regulating system of claim 1, wherein, A plurality of fans (300) are arranged, and the plurality of fans (300) and the plurality of cabinets (100) are in one-to-one correspondence, and each fan (300) is used to suck the gas in the corresponding cabinet (100) into the condenser (200).

7. An immersion liquid-cooled cabinet characterized by, The pressure regulating system of any one of claims 1-6, wherein the cabinet (100) and the condenser (200) form the cooling loop, and the fan (300) is arranged on the cooling loop.

8. A pressure regulating method, characterized by, A method for regulating pressure in a cabinet (100) using the pressure regulating system of any one of claims 1-6, comprising the steps of: S1, connecting the condenser (200) with the cabinet (100) to make the cooling liquid circulate in the cooling loop; S2, opening the fan (300) between the condenser (200) and the cabinet (100) to make the fan (300) accelerate the gas in the cabinet (100) to be drawn into the condenser (200); S3, when the gas pressure in the condenser (200) is greater than a preset pressure, connecting the liquid storage tank (400) with the condenser (200) to make part of the cooling liquid in the condenser (200) flow into the liquid storage tank (400) for temporary storage; When step S2 is performed, a first current gas pressure value in the cabinet (100) is measured by a first pressure sensor (110), when the first current gas pressure value is greater than a first preset pressure value, the fan (300) is opened, and the rotating speed of the fan (300) is adjusted according to the current gas pressure value; When step S3 is performed, a second current gas pressure value in the condenser (200) is measured by a second pressure sensor (210), when the second current gas pressure value is greater than a second preset pressure value, the condenser (200) and the liquid storage tank (400) are connected; When step S3 is performed, the telescopic size of the liquid storage tank (400) is adjusted according to the second current gas pressure value to adjust the volume of the cavity.

9. The pressure regulating method of claim 8, wherein, The rotating speed of the fan (300) is adjusted according to the current gas pressure value in the cabinet (100) and the current pressure value in the gas outlet manifold bin (700) connected between a plurality of the cabinet (100) and the condenser (200).

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