Data center phase change liquid cooling framework and machine room

Abstract

The embodiment of the invention discloses a data center phase change liquid cooling framework and a machine room. The framework comprises a machine room, a machine cabinet, and a condensation unit, a water supply pipe and a water return pipe which are fixed in the machine room, the cabinet and the condensation unit are located in a sealed equipment cavity, a liquid containing area capable of containing a phase change working medium is arranged in the cabinet body, and the cabinet further comprises an exhaust opening and a liquid return connector which are communicated with the liquid containing area. The condensation unit is fixedly arranged on the side of the cabinet, a liquid collecting tank of the condensation unit is located below the condensation pipe and provided with a top notch and a liquid outlet connector, the projection of the top notch and the projection of the condensation pipe on the floor face of the machine room at least partially coincide, and after being discharged into an equipment cavity of the machine room, a vapor-state working medium in the cabinet makes contact with the surface of the condensation pipe on the side for heat exchange. And a liquid return channel is arranged between the liquid outlet interface of the liquid collecting tank and the liquid return interface of the cabinet. Based on the architecture design of decoupling of the condensation unit and the cabinet, the space of a machine room can be fully utilized to arrange the condensation unit, independent evolution of the CDU and the cabinet is achieved, and the overall sealing implementation cost can be effectively reduced.

Description

TECHNICAL FIELD

[0001] Embodiments of the present application relate to the technical field of data centers, and in particular to a data center phase change liquid cooling architecture and a computer room. BACKGROUND

[0002] With the development of data centers towards high power, high integration, and super large scale, high-performance chips and integrated circuit elements are increasingly widely used, and the heat flux density is increasing. The traditional air cooling system has been unable to meet the heat dissipation needs of high-power components, and liquid cooling technology has been widely used in high-power density heat dissipation scenarios based on low energy consumption and good heat dissipation capacity.

[0003] In order to ensure the stability and reliability of data center servers, the research and design of efficient cooling systems have become a key link in the design of data center systems. According to whether the liquid cooling medium is in direct contact with the power device, liquid cooling can be divided into indirect contact liquid cooling and direct immersion liquid cooling; according to the state of the liquid cooling medium when taking away heat, it can be divided into single-phase liquid cooling and phase change liquid cooling.

[0004] Taking a data center server as an example, in a typical phase change immersion liquid cooling scheme related to the server node, the heat generated by the high-power device in the server node is transferred to the liquid working medium, and the liquid working medium is liquefied at the condensing coil or condenser of the cooling liquid distribution device (CDU) after vaporization; the CDU is usually integrated with the server, and based on the heat management and distribution of the CDU, the liquid cooling medium after releasing heat returns to the server node side and enters the next liquid cooling cycle. However, the CDU is usually integrated with the server cabinet, and the weight of the whole machine is too large, which is not conducive to transportation and other operations. Limited by the influence of the transfer transportation, the space that can be allocated to the CDU directly affects the heat dissipation capacity of the whole machine, and cannot adapt to the performance evolution needs of the data center server. SUMMARY

[0005] Embodiments of the present application provide a data center phase change liquid cooling architecture and a computer room, which realize the decoupling of the cooling liquid distribution device and the cabinet through the optimization of the phase change liquid cooling architecture, and provide technical support for the independent evolution of the CDU side and the cabinet side.

[0006] The first aspect of the embodiment of the present application provides a data center phase change liquid cooling architecture, which comprises a machine room, a cabinet, and a condensing unit, a water supply pipe and a return water pipe fixed to the machine room; the machine room comprises a sealed equipment cavity, the cabinet and the condensing unit are located in the equipment cavity, and the condensing unit is fixedly arranged beside the cabinet; wherein the cabinet comprises a cabinet body and a node, the node is located in the cabinet body, the cabinet body has a liquid containing area capable of containing a phase change working medium, the cabinet further comprises an exhaust opening and a liquid return interface, the exhaust opening is communicated with the liquid containing area in the cabinet body to discharge the vapor state working medium in the liquid containing area, and the liquid return interface is communicated with the liquid containing area in the cabinet body to deliver the liquid state working medium to the liquid containing area. The condensing unit comprises a condensing pipe and a liquid collecting tank, the water inlet of the condensing pipe is communicated with the water supply pipe, and the water outlet of the condensing pipe is communicated with the return water pipe; the cooling water can flow into the condensing pipe through the water supply pipe, complete heat exchange and temperature rise, flow into the heat exchanger through the return water pipe, complete heat exchange and temperature drop, and then flow to the condensing unit through the water supply pipe. Thus, a cooling water working cycle of the secondary side is constructed. The liquid collecting tank is located below the condensing pipe, the liquid collecting tank has a top tank opening and a liquid outlet interface, and the projection of the top tank opening and the condensing pipe on the floor surface of the machine room at least partially overlaps; after the vapor state working medium in the cabinet is discharged into the equipment cavity of the machine room, the vapor state working medium is in contact with the surface of the condensing pipe beside the cabinet to exchange heat, the liquid state working medium liquefied by cooling drops into the liquid collecting tank, and the liquid return channel is formed between the liquid outlet interface of the liquid collecting tank and the liquid return interface of the cabinet, thereby constructing a phase change working medium working cycle.

[0007] The embodiment of the present application adopts the architecture design of decoupling the condensing unit from the cabinet, the condensing unit, the water supply pipe and the return water pipe are all arranged on the machine room side, and the independent evolution of the CDU and the cabinet can be realized. After the cabinet enters, the liquid outlet interface provided by the condensing unit is connected with the liquid return interface of the corresponding cabinet, thereby forming the liquid return channel between the condensing unit and the cabinet. In this way, the condensing unit can be fully utilized to layout the machine room space to obtain the heat exchange capacity meeting the heat dissipation requirement of the cabinet, and the problem that the overall heat exchange capacity of the condensing unit limits the performance evolution of the cabinet can be effectively avoided. At the same time, the density of the vapor state working medium is lower than the density of air, based on the structural feature that the condensing unit is fixedly arranged beside the cabinet, the path length between the exhaust opening of the cabinet and the condensing pipe of the condensing unit can be reasonably controlled, and the concentration of the vapor state working medium in the height region where the condensing unit is located is relatively high, thereby effectively improving the heat exchange and condensing efficiency of the vapor state working medium.

[0008] In addition, the size and weight of the cabinet can be reasonably controlled, the transfer transportation operation of the cabinet is facilitated, and the packaging cost, storage cost and transportation cost of the cabinet are effectively reduced.

[0009] In addition, the condensing unit and the cabinet are arranged in the sealed equipment cavity of the machine room to form a machine room level sealed phase change liquid cooling architecture, and the overall sealing implementation cost can be effectively reduced.

[0010] Exemplarily, the projection of the condensing pipe on the floor surface of the machine room can coincide with the projection of the top notch on the floor surface of the machine room; or the projection of the condensing pipe on the floor surface of the machine room can also be located within the projection of the top notch on the floor surface of the machine room. In this way, it can be ensured that the liquid working medium condensed on the surface of the condensing pipe can reliably drip into the liquid collecting groove, so as to ensure that the liquid working medium can be effectively collected.

[0011] Other exemplarily, the cabinets in the machine room include but are not limited to servers, storage devices, switches, routers, firewalls and other facilities or devices.

[0012] Based on the first aspect, the embodiments of the present application also provide a first kind of implementation of the first aspect: the condensing unit further comprises a cover body, a liquid outlet pipe, a water supply connecting pipe and a water return connecting pipe, the condensing pipe is arranged in the cover body, the cover body has an opening on the opposite side of the cabinet, and the condensing pipe is exposed so that the gaseous working medium discharged from the cabinet side flows between the pipe body of the condensing pipe; the liquid collecting groove is arranged at the bottom of the cover body, the liquid outlet pipe is fixedly connected with the liquid collecting groove, the water supply connecting pipe and the water return connecting pipe are fixedly connected with the cover body, the water inlet of the condensing pipe is communicated with the water supply pipe through the water supply connecting pipe, and the water outlet of the condensing pipe is communicated with the water return pipe through the water return connecting pipe. In this way, based on the assembly and fixing basis provided by the cover body, the overall condensing unit is modularly assembled, which is easy to assemble and convenient to flexibly deploy according to the application scene as needed. It has good adaptability.

[0013] Exemplarily, the lower end of the condensing pipe can be built-in in the liquid collecting groove, so that the liquid working medium falls into the liquid collecting groove located below under the guidance of the condensing pipe, avoiding splashing of liquid drops due to high position falling.

[0014] In actual application, the liquid collecting groove and the cover body can be integrally processed and formed, or they can be separately processed and then assembled and fixed.

[0015] Based on the first kind of implementation of the first aspect, the embodiments of the present application also provide a second kind of implementation of the first aspect: a plurality of condensing pipes are connected in parallel between the water supply connecting pipe and the water return connecting pipe, and the plurality of condensing pipes form a condensing pipe group. In actual application, the condensing unit can include a plurality of condensing pipe groups, and the condensing pipe group further includes a water supply branch pipe and a water return branch pipe, the water inlets of the condensing pipes of the condensing pipe group are respectively communicated with the water supply connecting pipe through the water supply branch pipe, and the water outlets of the condensing pipes of the condensing pipe group are respectively communicated with the water return connecting pipe through the water return branch pipe. In this way, on the one hand, the flow path of the cooling water in the condensing pipe can be shortened to a certain extent, the flow resistance of the cooling water in the pipe can be reduced, and the heat exchange efficiency can be improved. On the other hand, based on the feature that the gaseous working medium generated by each cabinet is directly discharged into the equipment cavity of the machine room, the plurality of condensing pipe groups jointly participate in the condensation and liquefaction of the gaseous working medium, the pooling of heat exchange resources can be realized, and the utilization rate of the condensation side heat dissipation capacity of the architecture can be further improved. At the same time, based on the pooling of heat exchange resources, the pressure influence that may be caused by different node loads can be completely avoided.

[0016] Exemplarily, a plurality of groups of condensing pipes can be arranged in the cover body in sequence in the vertical direction, and the water supply pipe and the water return pipe are arranged in the vertical direction to reasonably control the flow resistance and improve the heat exchange efficiency.

[0017] Based on the first or second implementation of the first aspect, the third implementation of the first aspect is provided by the embodiments of the present application: the data center phase change liquid cooling architecture further comprises a liquid storage tank and a working medium pump, the liquid collecting tank is communicated with the liquid storage tank through a liquid outlet pipe, the liquid storage tank is communicated with the liquid return interface of the cabinet through a liquid discharge pipe, and a liquid return channel is formed, and the working medium pump is used to pump the liquid working medium in the liquid storage tank into the liquid discharge pipe. In a specific implementation, the liquid working medium collected in the liquid collecting tank of the plurality of condensing units is collected in the liquid storage tank, which can further realize the pooling of heat exchange resources, reduce the total amount of phase change working medium injected in the overall architecture, and reasonably control the operation cost.

[0018] Exemplarily, the liquid storage tank is arranged below the liquid collecting tank, and the collection of the liquid working medium can be realized based on the self-weight of the phase change working medium, without additional power consumption in actual operation.

[0019] Based on the third implementation of the first aspect, the fourth implementation of the first aspect is provided by the embodiments of the present application: the equipment cavity comprises a floor surface, the floor surface has a spacing with the ground of the machine room, the cabinet and the condensing unit are arranged on the floor surface, and the liquid storage tank is arranged below the floor surface. In this way, the space above the floor surface is not occupied, so as to avoid affecting the reasonable layout of the cabinet array in the equipment cavity.

[0020] Based on the first aspect, the first implementation of the first aspect, the second implementation of the first aspect, the third implementation of the first aspect, the fourth implementation of the first aspect, or the fifth implementation of the first aspect, the sixth implementation of the first aspect is provided by the embodiments of the present application: the pipe body of the condensing pipe is arranged vertically beside the cabinet. In this way, when the gaseous working medium is liquefied on the surface of the condensing pipe, it can quickly flow downward along the vertically extended pipe body, so as to avoid too much liquid working medium adhering to the surface of the pipe body, and effectively improve the heat exchange efficiency of the gaseous working medium.

[0021] Based on the first aspect, the first implementation of the first aspect, the second implementation of the first aspect, the third implementation of the first aspect, the fourth implementation of the first aspect, the fifth implementation of the first aspect, or the sixth implementation of the first aspect, the seventh implementation of the first aspect is provided by the embodiments of the present application: the condensing unit further comprises an extended condensing pipe, the extended condensing pipe is arranged above the cabinet, the pipe body of the extended condensing pipe is arranged in the horizontal plane, and the water inlet and the water outlet of the extended condensing pipe are communicated with the water supply pipe and the water return pipe respectively. In this way, the top space of the machine room equipment cavity can be used to expand the heat exchange capacity, and the overall heat exchange capacity is improved.

[0022] According to the first aspect, or the first implementation of the first aspect, or the second implementation of the first aspect, or the third implementation of the first aspect, or the fourth implementation of the first aspect, or the fifth implementation of the first aspect, or the sixth implementation of the first aspect, the seventh implementation of the first aspect is provided in the embodiments of the present application: the cabinet of the node forms a closed area capable of containing the phase change working medium. In practical applications, the cabinet includes a plurality of nodes, and the cabinet further includes a liquid return pipe fixedly arranged on the cabinet body and extending out of the cabinet body to form a liquid return interface; the liquid return pipe is in communication with the inner cavities of the cabinets of the nodes respectively to deliver the liquid working medium to the cabinets. For the cabinet decoupled from the CDU side, the liquid return pipe in communication with the nodes can be configured to quickly build the corresponding working cycle of the phase change working medium in the machine room, which has good operability.

[0023] Exemplarily, the liquid return pipe extends in the vertical direction, and the liquid return interface can be located at the top end of the liquid return pipe. Exemplarily, the liquid return interface can also be located at the bottom end of the liquid return pipe.

[0024] In practical applications, a flow valve can be arranged between the liquid return pipe and the liquid inlet of the node. When the power dissipation of the power devices to be cooled in the nodes in the cabinet is different, the opening degree of the flow valve can be adjusted according to the actual cooling demand of the node to realize the on-demand distribution of cold energy.

[0025] According to the first aspect, or the first implementation of the first aspect, or the second implementation of the first aspect, or the third implementation of the first aspect, or the fourth implementation of the first aspect, or the fifth implementation of the first aspect, or the sixth implementation of the first aspect, the eighth implementation of the first aspect is provided in the embodiments of the present application: the cabinet body of the cabinet is sealed to form a closed area capable of containing the phase change working medium. In this way, the application needs of different scenarios can be met, which has good adaptability.

[0026] According to the first aspect, or the first implementation of the first aspect, or the second implementation of the first aspect, or the third implementation of the first aspect, or the fourth implementation of the first aspect, or the fifth implementation of the first aspect, or the sixth implementation of the first aspect, or the seventh implementation of the first aspect, or the eighth implementation of the first aspect, the ninth implementation of the first aspect is provided in the embodiments of the present application: the number of the cabinets is multiple, the multiple cabinets are arranged in multiple rows, and the adjacent two rows of cabinets are arranged at intervals. Correspondingly, the number of the condensing units is multiple, and the multiple condensing units are arranged between the adjacent two rows of cabinets. In this way, the troubleshooting and analysis are facilitated, and the maintenance and repair can be independently performed on the basis of not affecting the normal operation of the non-fault part.

[0027] Based on the ninth implementation manner of the first aspect, the eleventh implementation manner of the first aspect is provided in the embodiments of the present application: the data center phase change liquid cooling architecture further comprises a baffle; the exhaust opening of the node is located on the same side of the cabinet, and the baffle and the cabinet enclose a collection area, and the exhaust opening and the condensing pipe are located in the collection area. In this way, the vapor state working medium can be ensured to be focused on the condensing pipe in the collection area and to be in full contact with the condensing pipe to complete condensation and liquefaction, thereby effectively improving the heat exchange efficiency.

[0028] Exemplarily, the baffle enclosing the collection area can comprise a first baffle and a second baffle, the first baffle is fixedly connected between the cabinet top of the two adjacent rows of cabinets, and the second baffle is located on the end side of the row of cabinets and is fixedly connected to the outer side wall of the cabinet of the two cabinets on the same end side. In actual application, the second baffle is two, and is located on the two end sides of the row of cabinets.

[0029] Based on the first aspect, or the first implementation manner of the first aspect, or the second implementation manner of the first aspect, or the third implementation manner of the first aspect, or the fourth implementation manner of the first aspect, or the fifth implementation manner of the first aspect, or the sixth implementation manner of the first aspect, or the seventh implementation manner of the first aspect, or the eighth implementation manner of the first aspect, or the ninth implementation manner of the first aspect, or the tenth implementation manner of the first aspect, the eleventh implementation manner of the first aspect is provided in the embodiments of the present application: the machine room further comprises a buffer cavity which is separately arranged from the equipment cavity, and an inner door is arranged on the partition wall between the equipment cavity and the buffer cavity, and an outer door is arranged on the outer wall of the buffer cavity. When the operator enters the machine room for maintenance, the outer door can be opened first to enter the buffer cavity, and then the inner door is closed and opened to enter the equipment cavity. After the operator completes the maintenance, the inner door is opened first to enter the buffer cavity, and then the outer door is closed and opened to exit the machine room. In this way, based on the configuration of the buffer cavity, the escape loss of the vapor state working medium in the equipment cavity can be effectively reduced.

[0030] In actual application, the equipment cavity can further comprise a normally closed exhaust port. Under normal circumstances, the exhaust port is in a closed state to maintain the reliable sealing of the equipment cavity. When the air volume in the equipment cavity reaches a certain degree, the exhaust port can be opened to exhaust the air in the cavity, so as to ensure that the working medium concentration in the equipment cavity meets the needs of heat dissipation performance.

[0031] In other actual applications, a safety valve can be arranged at the exhaust port. In this way, when the equipment in the equipment cavity abnormally operates and a high pressure condition occurs, when the abnormal pressure reaches the pressure setting value of the safety valve, the safety valve arranged at the exhaust port will be automatically opened, thereby ensuring safety through effective exhaust of the gas.

[0032] A second aspect of this application provides a data center for housing server racks. The data center includes a sealed equipment cavity and a fixedly installed condensing unit, water supply pipe, and return pipe. The condensing unit includes condenser pipes and a collection tank. The inlet of the condenser pipes is connected to the water supply pipe, and the outlet of the condenser pipes is connected to the return pipe. The collection tank is located below the condenser pipes and has a top opening and an outlet interface. The top opening and the projection of the condenser pipes onto the data center floor at least partially overlap. The condenser pipes are located beside the server racks within the equipment cavity, and the outlet interface of the collection tank forms a return channel with the return interface on the server rack side. Based on the condensing unit, water supply pipe, and return pipe installed on the data center side, the condensing unit is decoupled from the server rack, allowing for independent evolution of the CDU. This allows for full utilization of the data center space to arrange the condensing unit, effectively improving heat exchange capacity, while also effectively reducing the cost of achieving a sealed configuration.

[0033] For example, the projection of the condenser tube onto the computer room floor coincides with the projection of the top slot onto the computer room floor; or, the projection of the condenser tube onto the computer room floor lies within the projection of the top slot onto the computer room floor. This ensures that the liquid working fluid condensing on the surface of the condenser tube reliably drips into the collection tank, guaranteeing effective collection of the liquid working fluid.

[0034] In practical applications, in addition to phase change immersion liquid-cooled cabinets, the data center's server room can also be equipped with cabinets or equipment with independently configured heat dissipation structures. For example, cabinets or equipment using independent liquid-cooled heat dissipation structures.

[0035] Based on the second aspect, this application also provides a first implementation method for the second aspect: the condensation unit further includes a cover, a liquid outlet pipe, a water supply pipe, and a water return pipe. The condensation pipe is disposed in the cover, and the liquid collection tank is disposed at the bottom of the cover. The liquid outlet pipe is fixedly connected to the liquid collection tank, and the water supply pipe and the water return pipe are fixedly connected to the cover. The water inlet of the condensation pipe is connected to the water supply pipe through the water supply pipe, and the water outlet of the condensation pipe is connected to the water return pipe through the water return pipe. Based on the assembly and fixing foundation provided by the cover, a modular assembly condensation unit is formed as a whole, which is easy to assemble and convenient for flexible deployment according to the application scenario.

[0036] In the first implementation of the second aspect, the second implementation of the second aspect further provides a third implementation of the second aspect. The machine room further comprises a liquid storage tank and a working medium pump. The liquid collecting tank is connected to the liquid storage tank through a liquid outlet pipe. The liquid storage tank is connected to the liquid return interface of the cabinet through a liquid discharge pipe, thereby forming a liquid return channel. The working medium pump is configured to pump the liquid working medium in the liquid storage tank into the liquid discharge pipe. In this way, the heat exchange resources can be pooled, the total amount of phase-change working medium injected into the overall architecture can be reduced, and the operation cost can be reasonably controlled.

[0037] In the first implementation of the second aspect, the second implementation of the second aspect further provides a third implementation of the second aspect. The machine room further comprises a liquid storage tank and a working medium pump. The liquid collecting tank is connected to the liquid storage tank through a liquid outlet pipe. The liquid storage tank is connected to the liquid return interface of the cabinet through a liquid discharge pipe, thereby forming a liquid return channel. The working medium pump is configured to pump the liquid working medium in the liquid storage tank into the liquid discharge pipe. In this way, the heat exchange resources can be pooled, the total amount of phase-change working medium injected into the overall architecture can be reduced, and the operation cost can be reasonably controlled.

[0038] In the first implementation of the second aspect, the second implementation of the second aspect further provides a third implementation of the second aspect. The machine room further comprises a liquid storage tank and a working medium pump. The liquid collecting tank is connected to the liquid storage tank through a liquid outlet pipe. The liquid storage tank is connected to the liquid return interface of the cabinet through a liquid discharge pipe, thereby forming a liquid return channel. The working medium pump is configured to pump the liquid working medium in the liquid storage tank into the liquid discharge pipe. In this way, the heat exchange resources can be pooled, the total amount of phase-change working medium injected into the overall architecture can be reduced, and the operation cost can be reasonably controlled.

[0039] In other actual applications, the external operator can also remotely monitor the operation robot, which can perform corresponding operation according to the operator's instructions. The man-machine cooperation can effectively improve the operation efficiency. With the growth of data center business, the scale is also getting larger and larger. For the high-density layout of data centers, the above technical advantages are particularly significant. BRIEF DESCRIPTION OF DRAWINGS

[0040] Figure 1 A schematic diagram of a data center phase-change liquid cooling architecture provided by an embodiment of the present application;

[0041] Figure 2 A schematic diagram of a data center phase-change liquid cooling architecture provided by an embodiment of the present application; Figure 1 A-A cross-sectional view in FIG. 4;

[0042] Figure 3 is a B-B sectional view in Figure 1

[0043] Figure 4 is a schematic diagram of a data center phase change liquid cooling architecture provided by an embodiment of the present application;

[0044] Figure 5 is a schematic diagram of a data center phase change liquid cooling architecture provided by an embodiment of the present application; Figure 1

[0045] Figure 6 Figure 2

[0046] Figure 7 is a schematic diagram of a cabinet provided by an embodiment of the present application;

[0047] Figure 8 is a schematic diagram of a cabinet provided by an embodiment of the present application; Figure 7

[0048] Figure 9 is a schematic diagram of an assembly relationship of a condensing unit provided by an embodiment of the present application;

[0049] Figure 10 is a C-C partial view in Figure 9

[0050] Figure 11 is a schematic diagram of a condensing pipe shown in Figure 9

[0051] is a D-D sectional view in Figure 12 Figure 9

[0052] Figure 13 is a schematic diagram of an internal structure assembly relationship of a machine room shown in Figure 3

[0053] Figure 14 is a schematic diagram of a connection relationship between a cabinet and a condensing unit provided by an embodiment of the present application;

[0054] Figure 15 is a schematic diagram of a connection relationship between a cabinet and a condensing unit provided by an embodiment of the present application;

[0055] Figure 16 is a schematic diagram of a connection relationship between a cabinet and a condensing unit provided by an embodiment of the present application;

[0056] Figure 17 is a schematic diagram of a connection relationship between a cabinet and a condensing unit provided by an embodiment of the present application;​​​​​​​​​

[0057] Figure 18 Another top view of a data center phase change liquid cooling architecture provided by an embodiment of the present application;

[0058] Figure 19 Another top view of a data center phase change liquid cooling architecture provided by an embodiment of the present application;

[0059] Figure 20 Another top view of a data center phase change liquid cooling architecture provided by an embodiment of the present application;

[0060] Figure 21 Another top view of a data center phase change liquid cooling architecture provided by an embodiment of the present application. DETAILED DESCRIPTION

[0061] An implementation scheme of heat management and distribution of machine room level cooling is provided by an embodiment of the present application, to flexibly realize the layout of the condensing unit and meet the heat dissipation requirements of the data center server.

[0062] A data center is used to realize the centralized processing, storage, transmission, exchange and management of data information. Generally, the machine room of the data center includes but is not limited to servers, storage devices, switches, routers, firewalls and other facilities or devices to provide diverse computing capabilities. In order to meet the growing intelligent needs of various industries, the computing power scale of the data center is also increasing, and the heat flux density is also significantly improved. During operation, the equipment in the data center will generate a large amount of heat, and an effective cooling system is crucial to maintain normal operation of the equipment and prolong the service life of the hardware.

[0063] In order to ensure the stability and reliability of the data center, the research and development of liquid cooling technology has become an important link in the design of the data center system, especially the immersion liquid cooling technology, which has attracted much attention in the industry due to its excellent heat dissipation capacity. Taking a data center server as an example, in a typical phase change immersion liquid cooling scheme, the CDU is integrated with the server cabinet, the heat generated by the electronic components on the server node is transferred to the liquid phase change working medium (hereinafter referred to as liquid working medium), and the liquid working medium vaporizes when it reaches the boiling point. The vapor phase change working medium (hereinafter referred to as vapor working medium) is liquefied at the condensing coil or condenser of the CDU. Based on the heat management and distribution of the CDU, the liquid cooling working medium after releasing heat returns to the server node side and enters the next liquid cooling cycle. The integrated CDU and server cabinet have a large overall weight, which is not conducive to transportation and deployment operation in the machine room. In addition, in order to meet the requirements of the whole machine transportation, the space available for the CDU is limited, which directly affects the overall heat dissipation capacity and cannot adapt to the performance evolution needs of the data center server.

[0064] Based on this, the data center phase change liquid cooling architecture provided by the embodiments of the present application includes a machine room and a phase change immersion liquid cooling cabinet, and a condensing unit, a water supply pipe and a return water pipe fixed to the machine room; the machine room has a sealed equipment cavity, the condensing unit and the cabinet are arranged in the equipment cavity, and the condensing unit is fixedly arranged beside the cabinet.

[0065] The cabinet includes a cabinet body and a node, the node is located in the cabinet body, and the cabinet body has a liquid containing area capable of containing the phase change working medium, so that the power device to be cooled of the node is immersed in the liquid working medium. The cabinet further includes an exhaust opening and a liquid return interface, the exhaust opening is in communication with the liquid containing area in the cabinet body to exhaust the vapor working medium in the liquid containing area, and the liquid return interface is in communication with the liquid containing area in the cabinet body to deliver the liquid working medium to the liquid containing area.

[0066] Here, "the power device of the node is immersed in the liquid working medium" includes the case that the power device to be cooled is completely located below the working medium liquid level in the liquid containing area, that is, completely immersed; and also includes the case that part of the structure of the power device to be cooled is located below the working medium liquid level, that is, partially immersed. For partial immersion, for example, the cold energy can be distributed according to the cooling requirements of different cabinets or nodes, and the liquid amount of the liquid working medium in the corresponding cabinet or node is controlled, so that the power device to be cooled in the cabinet or node is partially immersed in the liquid working medium; for another example, according to the overall control strategy of system cold energy distribution, the liquid working medium return liquid amount in the corresponding cabinet or node is less than the working medium vaporization amount in a specific working period, so that the power device to be cooled in the cabinet or node is partially immersed in the liquid working medium, so as to reasonably regulate the system cold energy.

[0067] The condensing unit includes a condensing pipe and a liquid collecting tank, the water inlet of the condensing pipe is used for communication with the water supply pipe, and the water outlet of the condensing pipe is used for communication with the return water pipe. The cooling water can flow into the condensing pipe through the water supply pipe, complete heat exchange and temperature rise, flow into the heat exchanger through the return water pipe, complete heat exchange and temperature drop, and then flow to the condensing unit through the water supply pipe. Thus, the cooling water working cycle of the secondary side is constructed. The liquid collecting tank is located below the condensing pipe and has a top tank opening and a liquid outlet interface, and the projection of the top tank opening and the condensing pipe on the floor surface of the machine room at least partially overlaps. In this way, after the vapor working medium in the cabinet is discharged into the equipment cavity of the machine room, the vapor working medium is in contact with the surface of the condensing pipe beside the cabinet to exchange heat, and the liquid working medium liquefied by the cold drops into the liquid collecting tank, and the liquid return channel is formed between the liquid outlet interface of the liquid collecting tank and the liquid return interface of the cabinet. Thus, the phase change working medium working cycle is constructed.

[0068] The data center phase-change liquid cooling architecture provided in this application adopts a decoupled design between the condenser unit and the cabinet. The condenser unit, water supply pipes, and return pipes are all located on the server room side, enabling independent evolution of the CDU and the cabinet. After the cabinet is installed, it connects to the return liquid interface of the corresponding cabinet through the liquid outlet interface provided by the condenser unit, thus forming a return liquid channel between the condenser unit and the cabinet. This configuration can fully utilize the server room space to arrange the condenser unit to obtain heat exchange capacity that meets the heat dissipation requirements of the cabinet, effectively avoiding the problem of the overall heat exchange capacity of the condenser unit limiting the performance evolution of the cabinet. At the same time, the density of the gaseous working fluid is lower than that of air. Based on the structural feature that the condenser unit is fixedly located next to the cabinet, the path length between the exhaust opening of the cabinet and the condenser pipe of the condenser unit can be reasonably controlled, and the concentration of the gaseous working fluid in the height area of ​​the condenser unit is relatively high, which can effectively improve the heat exchange and condensation efficiency of the gaseous working fluid.

[0069] In addition, the size and weight of the cabinets can be reasonably controlled, which facilitates the relocation and transportation of the cabinets and effectively reduces the packaging, storage and transportation costs of the cabinets.

[0070] In addition, the condensation unit and cabinet are set in the sealed equipment cavity of the computer room, forming a computer room-level sealed phase change liquid cooling architecture, which can effectively reduce the overall sealing implementation cost.

[0071] To better understand the technical solutions and effects of this application, and without loss of generality, specific embodiments will be described in detail below with reference to the accompanying drawings. Please refer to... Figure 1 , Figure 2 and Figure 3 ,in, Figure 1 This is a schematic diagram of a data center phase change liquid cooling architecture provided in an embodiment of this application. Figure 2 for Figure 1 Sectional view AA Figure 3 for Figure 1 The BB cross-sectional view is shown in the image. To simplify the view and clearly illustrate the phase change liquid cooling architecture inside the computer room, Figure 2 and Figure 3 The external structures of the cooling tower and other equipment are not shown in the images.

[0072] like Figure 1 As shown, a cooling tower 51 is installed outside the server room 10 of the data center 100 to provide cooling water for the phase change liquid cooling architecture inside the server room. Combined with... Figure 2 and Figure 3 As shown, the computer room 10 includes a separate equipment chamber 101 and a buffer chamber 102. The sealed equipment chamber 101 is equipped with a phase change immersion liquid cooling cabinet 20 and a condensation unit 30.

[0073] The buffer cavity 102 is a transition area for the operation and maintenance personnel to enter and exit the equipment cavity 101 from the external environment. For the sealed equipment cavity 101, the overall sealing implementation cost is relatively low. The outer door 103 is arranged between the buffer cavity 102 and the external environment, that is, the outer door 103 is arranged on the outer wall of the buffer cavity 102, and the inner door 104 is arranged on the partition wall between the equipment cavity 101 and the buffer cavity 102.

[0074] As shown in the figure, the cabinet 20 and the condensing unit 30 are fixedly arranged on the floor 105 of the equipment cavity 101, and in the vertical direction, the floor 105 has a spacing L with the ground 106 of the machine room 10. It should be understood that for the sealed equipment cavity 101, in addition to the basic building structure, the corresponding configuration such as the opening and closing door for the operation personnel to enter and exit also needs to maintain good sealing reliability in the closed state.

[0075] In order to fully utilize the arrangeable space in the machine room 10, the cabinet 20 can be arranged in a row in the equipment cavity 101. In a specific implementation, a plurality of cabinets 20 can be arranged as a multi-row and multi-column cabinet array to provide a variety of computing comprehensive capabilities. The number of arrangements and the arrangement form of the cabinet 20 can be determined according to the overall design requirements of the product, and the embodiments of the present application are not limited. Here, the cabinet 20 that realizes heat dissipation based on the phase change immersion liquid cooling technology can include nodes of different device types such as servers, storage devices, switches, routers or firewalls. The specific selection can be made according to the overall function design of the data center, and the embodiments of the present application are not limited.

[0076] The data center phase change liquid cooling architecture provided by the embodiments of the present application is composed of a machine room side and a cabinet side.

[0077] The condensing unit 30 of the CDU and the water supply pipe 41 and the return water pipe 42 of the secondary side pipe network are fixed to the machine room 10, and are connected with the cooling tower 51 of the machine room water system through the secondary side pipe network, so as to distribute the cooling capacity of the cooling water to each cabinet 20 to be cooled. Please see Figure 4 and Figure 5 wherein, Figure 4 is a principle schematic diagram of the machine room side of the data center phase change liquid cooling architecture provided by the embodiments of the present application, Figure 5 is Figure 1 a schematic diagram of the machine room side of the data center phase change liquid cooling architecture shown in

[0078] As Figure 4 shown, the machine room water system 50 includes a cooling tower 51, a primary pump 52, a primary side pipe network 53, a heat exchanger 54 and a secondary pump 55. The cooling tower 51 is connected with the heat exchanger 54 through the water supply pipe and the return water pipe of the primary side pipe network 53, and the cooling tower 51 and the water supply pipe of the primary side pipe network 53 are provided with the primary pump 52, thereby constructing a primary side cooling water circulationFigure 4 (Solid line arrow illustration). The heat exchanger 54 is connected to the supply water pipe 41 and return water pipe 42 of the secondary side piping network, and a secondary pump 55 is installed between the heat exchanger 54 and the supply water pipe 41, thereby forming a secondary side cooling water circulation ( Figure 4 (Solid line arrow illustration). During operation, the heated cooling water flows out of the condenser tube 33 of the condensing unit and undergoes heat exchange in the heat exchanger 54 to become low-temperature cooling water. Under the action of the secondary pump 55, the low-temperature cooling water is transported to the condenser tube 33 of the condensing unit through the water supply pipe 41.

[0079] It should be noted that the water system 50 in the computer room can also adopt other configurations, rather than being limited to the system structure shown in the figure. For example, but not limited to, the cold source of the water system in the computer room can also be natural environmental water, rather than being limited to a cooling tower, as long as it can provide the cooling capacity required for heat dissipation of the equipment in the computer room and can remove heat from the computer room. The embodiments in this application are not limited.

[0080] Please see also Figure 3 , Figure 5 and Figure 6 ,in, Figure 6 for Figure 2 The diagram shows the assembly relationship of the condenser unit in the computer room.

[0081] The condensation unit 30, located on the side of the computer room, is fixedly installed beside the rack 20, for example. Figure 3 The diagram illustrates two rows of server racks 20 arranged in a row. The condensing unit 30 is located between the two rows of server racks 20, meaning that the condensing unit 30 is located on the opposite sides of the two adjacent rows of server racks 20. In this way, the gaseous working fluid discharged from the two rows of server racks 20 is discharged into the computer room and then liquefied through the condensing tubes of the condensing unit 30 located between the two rows of server racks 20, forming a phase change liquid cooling heat exchange subsystem.

[0082] Compared to the traditional approach of integrating CDUs into server racks, the cabling distances between the interconnected racks in this data center 10 are reasonably controlled, which effectively reduces link loss and ensures signal integrity for high-speed transmission signal links.

[0083] In this embodiment, the condensation unit 30 includes a condenser tube 33 and a liquid collection tank 311. The liquid collection tank 311 is located below the condenser tube 33 and has a top opening and a liquid outlet 312. The gaseous working fluid discharged into the equipment cavity 101 by the side node 23 of the cabinet 20 liquefies upon contact with the surface of the condenser tube 33. The liquid working fluid drips into the liquid collection tank 311 through the top opening and flows out of the liquid collection tank 311 through the liquid outlet 312 back to the liquid holding area on the side of the cabinet 20, thereby forming a phase change working fluid working cycle.

[0084] In a specific implementation, the projection of the condenser tube 33 on the floor surface of the machine room can coincide with the projection of the liquid collecting groove 311 on the floor surface of the machine room, so that the liquid-phase working medium condensed on the surface of the condenser tube 33 can reliably drip into the liquid collecting groove 311. In other specific implementations, the projection of the condenser tube 33 on the floor surface of the machine room is located within the projection of the liquid collecting groove 311 on the floor surface of the machine room; that is, the liquid collecting groove 311 has a relatively large size, which can further ensure that the liquid-phase working medium is effectively collected.

[0085] During the operation of the data center, when the operator enters the machine room for maintenance, the operator can first open the outer door 103 to enter the buffer cavity 102, and then close the outer door 103 and open the inner door 104 to enter the equipment cavity 101. Conversely, after the operator completes the maintenance, the operator first opens the inner door 104 to enter the buffer cavity 102, and then closes the inner door 104 and opens the outer door 103 to exit the machine room. In this way, based on the configuration of the buffer cavity 102, the escape loss of the vapor-phase working medium in the equipment cavity can be effectively reduced.

[0086] Please refer to Figure 7 and Figure 8 wherein, Figure 7 is a schematic diagram of a cabinet provided by an embodiment of the present application, Figure 8 is Figure 7 is another angle schematic diagram of the cabinet shown in

[0087] In a specific implementation, the cabinet 20 includes a cabinet body 21, a liquid return pipe 22, and nodes 23. The nodes 23 are located in the cabinet body 21, and the liquid return pipe 22 is fixed on the cabinet body 21. A liquid containing area capable of containing phase-change working medium is formed in the case 231 of each node 23, so that the power device 232 to be cooled of the node is immersed in the liquid-phase working medium. Here, the power device 232 to be cooled includes but is not limited to a processor chip, a memory bar, a network card chip, and an SSD disk, etc. For different types of node devices, the power device to be cooled can be different types of devices.

[0088] In the height direction of the case 231, a liquid-phase area at the bottom and a gas-phase area at the top can be formed in the case. The case 231 includes an exhaust opening 2311 and a liquid inlet 2312. The exhaust opening 2311 is located in the gas-phase area, so that the vapor-phase working medium in the node case 231 can be discharged into the equipment cavity 101 through the exhaust opening 2311. The liquid inlet 2312 is located in the liquid-phase area, and the liquid return pipe 22 is in communication with the liquid inlet 2312 of each node. The liquid-phase working medium can flow into the liquid return pipe 22 through the liquid return interface 221 based on gravity, so as to be transported to the node case 231, so that the liquid level of the liquid-phase working medium can always be higher than the power device 232 to be cooled, meeting the functional needs of immersion heat exchange.

[0089] For example, Figure 8As shown, to increase the flow of the liquid working medium in the node cabinet 231, further, the low-temperature liquid working medium can be directly guided to the upper part of the power device 232 through the liquid guide pipe 233 in communication with the liquid inlet 2312, effectively improving the heat dissipation capacity of the power device 232. It can be understood that the liquid guide pipe 233 can be selectively configured in different application scenarios.

[0090] In specific implementations, the size and shape of the exhaust opening 2311 can be selected as needed, and the embodiments of the present application are not limited. During the operation of the node 23 device, if the liquid working medium supplement liquid is relatively large, the liquid working medium can be automatically discharged from the node cabinet 231 through the exhaust opening 2311.

[0091] In other specific implementations, the liquid inlet 2312 is not limited to being located in the liquid phase zone. Based on the characteristics of the cavity intercommunication in the cabinet 231, the liquid inlet 2312 can also be configured in the gas phase zone. Compared, the liquid inlet 2312 is configured in the liquid phase zone, which can directly transport the liquid working medium to the liquid phase zone for immersion of the power device, avoiding the generation of flow disturbance affecting the heat exchange efficiency.

[0092] In the present embodiment, each node 23 in the cabinet 20 is arranged in the height direction in sequence, that is, a vertical cabinet. For example Figure 8 As shown, the liquid return pipe 22 extends out of the cabinet body 21 in the vertical direction, and the liquid return interface 221 is located at the bottom of the liquid return pipe 22, so that the connection with the liquid outlet interface 312 on the side of the condensation unit 30 is facilitated. Of course, in other possible implementation schemes, the liquid return pipe 22 extending out of the cabinet body 21 can also be arranged at an angle with the vertical direction to adapt to different liquid return channel arrangement modes. The embodiments of the present application are not limited.

[0093] In other implementation modes, each node 23 in the cabinet 20 can also be arranged in sequence in the horizontal plane, that is, a horizontal cabinet. Based on the liquid return pipe 22, a phase change working medium working cycle can be constructed between each node 23 in the cabinet and the condensation unit 30. The embodiments of the present application are not limited.

[0094] In other possible implementation modes, a liquid containing area (not shown in the figure) capable of containing the phase change working medium can also be formed in the cabinet body of the cabinet 20, so that the power devices of each node to be cooled are immersed in the liquid working medium, that is, the power devices of each node on the cabinet are immersed in the phase change working medium in the liquid containing area formed by the cabinet body. Correspondingly, the exhaust opening is also provided on the cabinet body, and the liquid return pipe is in communication with the liquid containing area in the cabinet body. In this way, the gaseous working medium generated in the cabinet can also be discharged into the device cavity through the exhaust opening, and a liquid return channel is formed through the liquid return pipe.

[0095] For example Figure 3 and Figure 6As shown, in order to improve the overall heat dissipation capacity, the number of condensing units 30 is set to multiple, and the multiple condensing units 30 are arranged in rows corresponding to the cabinet 20 arranged in rows. Figure 9 and Figure 10 wherein, Figure 9 is a schematic diagram of the assembly relationship of a condensing unit provided by the embodiment of the present application, Figure 10 is Figure 9 a partial cross-sectional view of C-C in

[0096] As shown in Figure 9 and Figure 10 , the condensing unit 30 includes a cover body 31, a condensing pipe 33 is arranged in the cover body 31, and a liquid collecting groove 311 is formed at the bottom of the cover body 31. At the same time, the cover body 31 is fixedly provided with a liquid outlet pipe 32, a water supply connecting pipe 34 and a water return connecting pipe 35. Among them, the liquid outlet pipe 32 communicates with the liquid outlet interface 312 of the liquid collecting groove 311, the water supply connecting pipe 34 communicates with the water inlet of the condensing pipe 33, and the water return connecting pipe 35 communicates with the water outlet of the condensing pipe 33. Based on the assembly and fixation basis provided by the cover body 31, the overall condensing unit 30 is formed in a modular assembly.

[0097] In the direction opposite to the cabinet 20, the cover body 31 can be provided through, that is, the cover body 31 has an opening 313 on the opposite side of the cabinet 20. In this way, the condensing pipe 33 is exposed and opposite to the side cabinet 20, so that the vaporized working medium discharged from the cabinet 20 flows between the pipe bodies of the condensing pipe 33 to achieve good contact heat exchange.

[0098] In specific implementation, the liquid collecting groove 311 and the cover body 31 can be integrally machined and formed, of course, they can also be separately machined and then assembled and fixed. The embodiment of the present application is not limited. In other specific implementations, the specific structure form of the cover body 31 can be determined according to the assembly process conditions, and is not limited to the rectangular frame shape arranged vertically as shown in the figure. It can be understood that the cover body 31 can be selectively configured in other possible implementation schemes on the basis of meeting the assembly requirements of the condensing pipe 33.

[0099] Among them, the water supply connecting pipe 34 communicates with the water supply pipe 41, and the water return connecting pipe 35 communicates with the water return pipe 42. The cooling water can flow into the condensing pipe 33 through the water supply pipe 41 and the water supply connecting pipe 34 of the condensing unit 30, complete heat exchange and temperature rise, then flow into the heat exchanger through the water return connecting pipe 35 and the water return pipe 42 of the condensing unit 30, complete heat exchange and temperature drop, and then the cooling water can flow to the condensing unit 30 through the water supply pipe 41.

[0100] To improve the heat exchange efficiency of the condenser tube 33, the tube body of the condenser tube 33 can optionally be arranged vertically. In this way, when the gaseous working fluid is cooled and liquefied on the surface of the condenser tube 33, it can flow rapidly downward along the vertically extending tube body and collect in the liquid collection tank 311, avoiding excessive liquid working fluid adhering to the tube body surface, which would affect the heat exchange efficiency of the gaseous working fluid.

[0101] Furthermore, the lower end of the condenser tube 33 can be built into the liquid collection tank 311 so that the liquid working fluid can fall quickly into the liquid collection tank 311 located below it under the guidance of the condenser tube 33, avoiding the splashing of droplets when falling from a high position.

[0102] For the condenser tubes 33 in the condenser unit 30, a serpentine, meandering arrangement can be adopted within the tube layout plane. Please refer to [the relevant documentation / reference]. Figure 11 and Figure 12 ,in, Figure 11 for Figure 9 A schematic diagram of the condenser tube shown. Figure 12 for Figure 9 DD section view in the image.

[0103] The condenser tube 33 includes multiple sequentially connected extension tube sections 331 and bent tube sections 332, forming a meandering shape. This allows for full utilization of the available space in the condenser unit 30 to provide heat exchange area. For example, the extension tube section 331 can be a straight tube section as shown in the figure, with adjacent straight tube sections connected by the bent tube section 332, which has good manufacturability.

[0104] It is understandable that for the meandering condenser tube 33, the tube body of its extension section 331 is set to extend vertically, which can also ensure that the liquid working fluid flows downward quickly.

[0105] To further improve heat exchange efficiency, the condensing unit 30 beside the cabinet 20 may include multiple condenser tubes 33, arranged in layers. The inlet of each condenser tube 33 is connected to the water supply pipe 34, and the outlet of each condenser tube 33 is connected to the water return pipe 35. In other words, multiple condenser tubes 33 are connected in parallel between the water supply pipe 34 and the water return pipe 35. This ensures that the cooling water flowing into each condenser tube 33 has a relatively uniform low temperature, and the layered arrangement of the condenser tubes 33 provides a higher heat exchange capacity, effectively improving heat dissipation.

[0106] In this embodiment, both the water supply pipe 34 and the return water pipe 35 extend within the pipe plane (vertical direction) of the condenser pipe 33 to reasonably control flow resistance and improve heat exchange efficiency. In other possible implementations, to meet the overall layout requirements of the architecture, the water supply pipe 34 and the return water pipe 35 can also be bent as needed, rather than being limited to extending within the pipe plane of the condenser pipe.

[0107] In a specific implementation, the serpentine condenser tubes 33 of each layer can be spaced apart in the horizontal direction, and the extension sections 331 of adjacent layers of condenser tubes 33 are staggered. Thus, within the condensation unit 30, condensation can be achieved along the horizontal direction. Figure 10 The direction indicated by the dashed arrow in the middle provides a large contact area for cooling, which provides a good technical guarantee for ensuring heat exchange efficiency.

[0108] Alternatively, the condenser tubes 33 arranged in layers can be grouped into condenser tube groups 33a. For example, the condensing unit 30 shown in the figure includes two condenser tube groups 33a, which are arranged sequentially in the vertical direction. Each condenser tube group 33a also includes a water supply branch pipe 341 and a water return branch pipe 351. For each condenser tube 33 in the condenser tube group 33a, the inlet is connected to the water supply branch pipe 341, and the outlet is connected to the water return branch pipe 351. That is, each condenser tube 33 in the condenser tube group 33a is arranged in parallel between the water supply branch pipe 341 and the water return branch pipe 351. For each condenser tube group 33a in the condensing unit 30, the water supply branch pipe 341 is connected to the water supply connector 34, and the water return branch pipe 351 is connected to the water return connector 35. That is, each condenser tube group 33a in the condensing unit 30 is arranged in parallel between the water supply connector 34 and the water return connector 35. This can shorten the flow path of cooling water in the condenser tube 33 to a certain extent, reduce the flow resistance of cooling water in the tube, and improve heat exchange efficiency.

[0109] Based on the characteristic that the gaseous working fluid generated by each cabinet 20 is directly discharged into the equipment cavity of the computer room, multiple sets of condenser tubes 33a jointly participate in the condensation and liquefaction of the gaseous working fluid, which can realize the pooling of heat exchange resources and further improve the utilization rate of the condenser side heat dissipation capacity of the architecture. At the same time, based on the pooling of heat exchange resources, the pressure impact that may be caused by different node loads can be completely avoided.

[0110] Furthermore, the multiple condensing units 30 arranged in rows can be configured in a one-to-one correspondence with the rows of server racks 20. In other specific implementations, the condensing units 30 and server racks 20 can also be configured in a non-one-to-one correspondence manner. The specific configuration can be determined according to the overall architecture design requirements, and this application embodiment does not impose any limitations.

[0111] For the condensing units 30 and cabinets 20 arranged in rows and corresponding to each other, in one implementation, the liquid collection tanks 311 of each condensing unit 30 can be collected into the liquid storage tank 60 through the liquid outlet pipe 32, and then returned to the liquid storage area through the liquid return pipe 22 of each cabinet 20. Please refer to [further details omitted]. Figure 5 , Figure 6 , Figure 13 and Figure 14 ,in, Figure 13 for Figure 3 The diagram shows the internal assembly relationship of the computer room.Figure 14 A connection relationship diagram of a cabinet and a condensing unit is provided for an embodiment of the present application.

[0112] As shown in the figure, the liquid storage tank 60 is located below the floor surface 105 and does not occupy the space above the floor surface 105, so as to avoid affecting the reasonable layout of the cabinet array in the equipment cavity. The liquid working medium collected in each collecting groove 311 is collected in the liquid storage tank 60, and the liquid working medium is pumped to each cabinet by the working medium pump 61. In this way, the pooling of heat exchange resources can be further realized, the total amount of phase change working medium injected in the overall architecture is reduced, and the operation cost is reasonably controlled.

[0113] Correspondingly, the drain pipe 62 is used to realize the communication between the liquid storage tank 60 and the liquid return pipe 22 on the side of the cabinet 20. Specifically, the drain pipe 62 can be used to build a liquid return flow channel according to the overall layout. The embodiment of the present application is not limited.

[0114] In the present embodiment, the condensing unit 30 is located beside the cabinet 20. In order to improve the condensing efficiency of the gaseous working medium, the exhaust opening 2311 of each node cabinet 231 on the cabinet 20 can be located on the same side of the cabinet body 21. In this way, when the power device in the phase change immersion liquid cooling node generates heat and the liquid working medium is heated to above the boiling point, the liquid working medium vaporizes, as shown by the dotted arrow in Figure 14 The gaseous working medium flows out of the node 23 to the condensing unit 30, is liquefied after contacting the condensing pipe, and the dripping liquid working medium is collected in the collecting groove 311, as shown by the solid arrow in Figure 14 The liquid working medium flows into the liquid storage tank 60, and is then returned to each node 23 through the drain pipe 62 and the liquid return pipe 22 of the cabinet 20, to complete a liquid cooling working cycle.

[0115] In addition, in order to simplify the secondary side pipe network, as shown in Figure 13 The water supply pipe 41 and the water return pipe 42 can be arranged in a closed annular pipe to respectively communicate with the water supply connecting pipe 34 and the water return connecting pipe 35 of each condensing unit 30, so as to build a cooling water working cycle of the secondary side. In this way, the flow resistance can be reasonably controlled.

[0116] For each node 23 in the cabinet 20, the amount of returned liquid working medium can be allocated according to the actual heat dissipation demand of the node. In a specific implementation, a flow valve 70 (as shown in Figure 8 ) can be arranged between the liquid return pipe 22 and the liquid inlet of the node 23, so as to adjust the opening of the flow valve 70 according to the actual heat dissipation demand, and realize the on-demand distribution of cooling capacity.

[0117] For the air brought in by the operation and maintenance personnel when entering the equipment cavity 101, a normally closed exhaust port 107 can be arranged in the sealed equipment cavity 101. In normal state, the exhaust port 107 is in closed state to maintain the reliable sealing of the equipment cavity 101. When the air amount in the equipment cavity 101 reaches a certain degree, the exhaust port 107 can be opened to exhaust the air in the cavity, so as to ensure that the working medium concentration in the equipment cavity 101 meets the needs of heat dissipation performance.

[0118] Further, in order to improve the safety and reliability of the data center liquid cooling heat dissipation architecture, a safety valve (not shown in the figure) can also be arranged at the exhaust port 107. The safety valve can be automatically opened based on a preset opening pressure. In this way, when the equipment in the equipment cavity 101 abnormally operates and a high pressure condition occurs, when the abnormal pressure reaches the pressure setting value of the safety valve, the safety valve arranged at the exhaust port 107 will be automatically opened, and the safety is ensured by effectively exhausting the gas.

[0119] In a specific implementation, a drainage structure (not shown in the figure) in communication with the liquid storage tank 60 can also be arranged on the floor surface. In this way, the liquid working medium that is not collected in the liquid collecting groove 311 can be gathered and recycled for reuse. The liquid working medium recycled through the liquid storage tank 60 can be purified and then pumped to the liquid collecting groove for reuse. In a specific implementation, the operation and maintenance process of the data center can be implemented, and details are not described herein.

[0120] For the condensing units 30 and the cabinets 20 arranged in an array and corresponding one by one, in another implementation, the liquid storage tank 60 can also be located above the floor surface 105. Please refer to Figure 15 , which is another connection relationship diagram of a cabinet and a condensing unit provided by the embodiment of the present application. In order to clearly show the difference and connection between the present embodiment and Figure 14 the described scheme, the same function and structure are shown in the same mark in the figure.

[0121] Compared with Figure 14 the described scheme, the difference of the phase change liquid cooling architecture described in the present embodiment is that the liquid storage tank 60 is located above the floor surface 105, and the condensing unit 30 is located above the liquid storage tank 60. In a specific implementation, the liquid return interface 221 is located at the top of the liquid return pipe 22, and correspondingly, the liquid discharge pipe 62 extends upward in the vertical direction from the liquid storage tank 60 and communicates with the liquid return pipe 22. Similarly, the liquid working medium collected in the liquid collecting groove of the condensing unit 30 can also be collected in the liquid storage tank 60, so as to realize the centralized distribution of cold energy.

[0122] Of course, in other possible implementation schemes, the liquid storage tank 60 is not limited to being arranged below the liquid collecting groove, and can be arranged as long as the function of storing liquid working medium is required. The embodiment of the present application is not limited.

[0123] In yet another possible implementation, the sump 311 of each condensing unit 30 can also be directly connected to the return pipe 22 of the corresponding cabinet 20 through a liquid outlet pipe 32, and each sump 311 is connected to the return pipe 22 of the corresponding cabinet 20 through a liquid outlet pipe 32 (not shown in the figure).

[0124] Of course, in other possible implementations, for multiple condensing units 30 arranged in a row, each sump 311 can also be integrated into one (not shown in the figure). For the integrated sump 311, multiple liquid outlet pipes 32 can be arranged on the sump 311 and connected to the return pipes 22 of the cabinets 20, respectively. In this way, the liquid working medium condensed on the surface of the condensing pipe 33 of each condensing unit 30 is collected in one sump 311, and the centralized distribution of the liquid working medium to the cabinets 20 is realized.

[0125] To improve the heat exchange capacity of the condensing unit 30, the projection area of the condensing pipe 33 of the condensing unit 30 in the projection plane parallel to the cabinets arranged in a row can be greater than the projection area of the cabinet 20. For example, but not limited to, the condensing unit 30 is arranged above the space between the cabinets. In this way, the overall heat exchange capacity can be improved by making full use of the top space of the equipment cavity of the machine room 10 according to the heat dissipation requirements of the equipment in the machine room. In this way, based on the decoupled architecture design of the condensing unit and the cabinet provided in the embodiments of the present application, the height space in the equipment cavity 101 of the machine room 10 is reasonably allocated to the condensing unit 30, and the volume of the condensing unit 30 is increased without increasing the space occupied by the condensing unit 30 in the horizontal plane. That is, by increasing the arrangement space of the condensing pipe 33, the heat exchange capacity is improved.

[0126] For example Figure 15 As shown, the water supply pipe 41 and the water return pipe 42 of the secondary side pipe network can also be arranged outside the machine room (not shown in the figure), and the two can be connected to the condensing unit 30 fixed in the machine room 10 through the top wall of the machine room 10. In this way, when the water supply pipe 41 and the water return pipe 42 need to be maintained, the operator does not need to enter the interior of the machine room, and the influence of the operation and maintenance on the environment in the machine room can be further reduced. Of course, in other possible implementations, each component of the machine room water system can also be arranged inside the machine room 10. The embodiments of the present application are not limited in this regard.

[0127] In the foregoing embodiments, the condensing pipe 33 of the condensing unit 30 is arranged beside the cabinet 20, and in other possible implementations, the condensing unit 30 can also include an extended condensing pipe 36, please refer to Figure 16 , which is another schematic diagram of the connection relationship between the cabinet and the condensing unit provided in the embodiments of the present application. In order to clearly show the differences and connections between the solutions described in Figure 14 and Figure 15 , the same components and structures with the same functions are shown with the same reference numerals in the figures.

[0128] Compared with the foregoing embodiments, the phase change liquid cooling architecture described in the present embodiment further comprises an extended condensing pipe 36, which is located above the cabinet 20 and the pipe body of which extends horizontally. In this way, the heat exchange capacity is expanded by utilizing the top space of the equipment cavity of the machine room 10, and the overall heat exchange capacity is improved.

[0129] In a specific implementation, the water inlet of the extended condensing pipe 36 can be in communication with the water supply pipe 41, and the water outlet of the extended condensing pipe 36 can be in communication with the water return pipe 42, so as to realize the corresponding cooling water circulation.

[0130] In order to improve the condensation efficiency of the gaseous working medium, for the exhaust openings 2311 of the node cabinets 231 located on the same side of the cabinet body 21, the exhaust openings 2311 and the condensing pipes 33 can be enclosed in the same collection area by the baffles and the cabinet body 21. Please refer to Figure 17 , which is another connection relationship diagram of the cabinet and the condensing unit provided by the embodiment of the present application. In order to clearly show the difference and connection between the present embodiment and the foregoing embodiments, the same function and structure are shown in the same mark in the figure.

[0131] In the present embodiment, the exhaust openings 2311 of the node cabinets 231 of the two adjacent rows of cabinets 20 are oppositely arranged, and the collection area S is formed by the first baffle 81, the second baffle 82 and the cabinet body 21. The oppositely arranged exhaust openings 2311 of the node cabinets 231 and the condensing pipes 33 of the two rows of cabinets 20 are located in the same collection area S. In this way, the gaseous working medium can be focused on the collection area S and flow to the condensing pipes 33, so as to be in full contact with the corresponding condensing pipes 33 to complete the condensation and liquefaction, thereby effectively improving the heat exchange efficiency.

[0132] For the two adjacent rows of cabinets 20, the first baffle 81 is fixedly connected between the top portions of the cabinet bodies 21 of the two adjacent rows of cabinets 20, and the second baffle 82 is located at the end side of the arranged cabinets 20 and is fixedly connected between the outer side walls of the cabinet bodies 21 of the two cabinets 20 located at the same end side. It can be understood that the number of the second baffles 82 is two, which are respectively located at the two end sides of the arranged cabinets 20 and cooperates with the first baffles 81 to form the collection area S.

[0133] For the arranged cabinets 20, the side where the exhaust openings are located is the non-maintenance side S1 of the cabinet, and the opposite side of the exhaust openings is the maintenance side S2 of the cabinet. When maintenance is needed, the second baffle 82 is removed, and the exhaust openings 2311 of the node cabinets 231 are exposed to the outside, so that the maintenance personnel can perform the maintenance work on the node cabinets 231. Figure 17As shown by the middle arrow E, the node 23 can be pulled out from the cabinet maintenance side S2, and after operation and maintenance, the node 23 can be inserted into the cabinet body in reverse direction. Based on the collection area S formed by the baffle, the operation and maintenance can be carried out on the fault cabinet or the fault node under the condition of no shutdown, thereby avoiding the influence of the liquid working medium drop as much as possible.

[0134] It should be noted that the "cabinet maintenance side S2" here refers to a higher operation and maintenance frequency than the "cabinet non-maintenance side S1", that is, the operation and maintenance frequency of the "cabinet non-maintenance side S1" is relatively low, and it does not mean that no maintenance is needed on the "cabinet non-maintenance side S1".

[0135] It should be noted that in addition to the phase change immersion liquid cooling cabinet 20 based on the foregoing data center phase change liquid cooling architecture for heat dissipation, cabinets or devices with independent cooling structures can also be arranged in the machine room 10 of the data center. For example, cabinets or devices with independent liquid cooling structures. The embodiments of the present application are not limited.

[0136] In other specific implementations, multiple groups of cabinets 20 arranged adjacent to each other can be arranged in the machine room, and corresponding condensing units 30 can be arranged. Please refer to Figure 18 , which is a top view of another data center phase change liquid cooling architecture provided by the embodiments of the present application. In order to clearly show the difference and connection between the present embodiment and the foregoing embodiments, the same function is shown in the figure with the same mark.

[0137] As shown in Figure 18 , eight groups of cabinets 20 arranged in rows are arranged in the equipment cavity 101 of the machine room 10, each group of cabinets 20 includes a first row of cabinets 20a and a second row of cabinets 20b arranged adjacent to each other, and each row of cabinets includes multiple cabinets 20. Each group of cabinets (20a, 20b) arranged in rows can be distributed with cold energy by the foregoing condensing unit 30. Similarly, the condensing pipes and liquid collecting tanks of the condensing unit can be arranged in rows and correspondingly arranged with the cabinets arranged in rows.

[0138] Specifically, based on the two rows of cabinets 20 and the corresponding condensing units 30, the group formation of the collection area S described in Figure 17 can be used to realize the pooling management and distribution of heat dissipation resources. In other specific implementations, the number of cabinet arrays arranged in the machine room 10 can be determined according to the overall design of the data center. The embodiments of the present application are not limited.

[0139] The specific implementation of other functional components can be consistent with the foregoing embodiments. Here, it will not be described again.

[0140] Next, the operation process of the operation and maintenance personnel for the machine room provided by the embodiments of the present application will be briefly described.

[0141] Firstly, the operator entering the machine room 10 needs to wear an oxygen mask, and should wear a clean work clothes. On the one hand, it can avoid the oxygen content in the equipment cavity 101 being too low to affect the safety of the operator, and on the other hand, it can avoid the operator carrying impurities to affect the running environment in the equipment cavity 101.

[0142] When the operator enters the machine room, first open the outer door 103 to enter the buffer cavity 102, inject air into the buffer cavity 102 after closing the outer door 103, so that the pressure in the buffer cavity 102 is slightly higher than that in the equipment cavity 101, and then open the inner door 104 to enter the equipment cavity 101. In this process, based on the relatively high pressure in the buffer cavity 102, the amount of escaping vapor working medium in the equipment cavity 101 can be effectively controlled when the inner door 104 is opened, which can reduce the operation and maintenance cost.

[0143] When the operator leaves the machine room, first inject air into the buffer cavity 102, so that the pressure in the buffer cavity 102 is slightly higher than that in the equipment cavity 101, and then open the inner door 104 to enter the equipment cavity 101. After closing the inner door 104, the operator can open the outer door 103 to leave the machine room.

[0144] It should be understood that during the operation and maintenance operation, based on the structural characteristics of the machine room level sealing, the vapor working medium and the liquid working medium falling in the internal environment of the machine room inevitably affect the work efficiency of the operation and maintenance personnel. In order to further improve the operation and maintenance efficiency, as shown in Figure 18 , an operation and maintenance robot 90 can be arranged in the machine room. The operation and maintenance robot 90 can be communicatively interconnected with the data center master control system to perform corresponding operation and maintenance operations according to the maintenance and repair requirements of the phase change liquid cooling architecture. For example, but not limited to, automatic predictive troubleshooting and analysis, fully automatic emergency disposal, etc. can be realized. In this way, the work intensity of the operation and maintenance personnel can be reduced, and the work efficiency can be effectively improved.

[0145] In specific implementation, the external operator can also remotely monitor, and the operation and maintenance robot 90 can perform corresponding operation and maintenance operations according to the instructions of the operator. The man-machine cooperation can effectively improve the work efficiency. In particular, with the growth of data center business, the scale is also getting larger and larger, and for the high-density layout data center, the above technical advantages are particularly significant.

[0146] In other specific implementations, based on the arrangement of the operation and maintenance robot 90, the buffer cavity can no longer be configured. Please refer to Figure 19 , which is a top view of another data center phase change liquid cooling architecture provided by the embodiment of the application. In order to clearly show the difference and connection between the present embodiment and the foregoing embodiments, the same function is shown in the figure with the same mark.

[0147] Compared with the embodiment described in Figure 18 , the operation and maintenance robot 90 can be arranged in the buffer cavity 102, and the buffer cavity 102 can be omitted. Figure 19The shown machine room 10 includes the equipment cavity 101, and no buffer cavity is configured. Meanwhile, the equipment cavity 101 can be provided with the operation window 108, so as to open the operation window 108 to realize the interaction of tools and materials according to the operation requirement of the operation robot 90. In this way, the sealing property of the equipment cavity 101 can be further ensured.

[0148] In addition, for the cabinet 20 and the condensing unit 30 arranged in rows, other corresponding arrangement modes can also be adopted. Please refer to Figure 20 , which is a top view of another data center phase change liquid cooling architecture provided by the embodiment of the present application. In order to clearly show the difference and connection between the present embodiment and the foregoing embodiments, the same function components are schematically shown by the same reference numerals in the figure.

[0149] As shown in Figure 20 , in the equipment cavity 101 of the machine room 10, the multiple rows of cabinets 20 and the multiple rows of condensing units 30 are arranged in sequence and at intervals, that is, arranged in the mode of one row of cabinets 20 and one row of condensing units 30. Based on the characteristic that the gaseous working medium generated by each cabinet is directly discharged into the equipment cavity of the machine room, the condensing units 30 are arranged on both sides of each row of cabinets 20, and each condensing unit 30 jointly participates in the condensation and liquefaction of the gaseous working medium, which can further improve the utilization rate of the condensation side heat dissipation capacity of the architecture, and the pooling advantage of the heat exchange resource is more significant.

[0150] The specific implementation of other function components can be consistent with the foregoing embodiments. Here, no longer be described in detail.

[0151] In addition, the cabinet 20 and the condensing unit 30 can also be arranged in rows and at intervals. Please refer to Figure 21 , which is a top view of another data center phase change liquid cooling architecture provided by the embodiment of the present application. In order to clearly show the difference and connection between the present embodiment and the foregoing embodiments, the same function components are schematically shown by the same reference numerals in the figure.

[0152] As shown in Figure 21 , in the equipment cavity 101 of the machine room 10, the cabinet 20 and the condensing unit 30 are arranged in rows and at intervals to form a cabinet group, in the row direction, the condensing unit 30 is fixed on the side of the cabinet 20, and multiple rows of cabinet groups are arranged in sequence and at intervals. In the specific implementation, the number of the cabinet 20 and the condensing unit 30 in each row of cabinet groups can be arranged at different intervals. In the figure, the condensing unit 30 is schematically distinguished by the diagonal line filled area.

[0153] The first cabinet group I is arranged in sequence with one cabinet 20 and one condensing unit 30 as shown in the figure; the second cabinet group II is arranged in sequence with two cabinets 20 and one condensing unit 30 as shown in the figure, and similarly, a plurality of cabinets 20 and one condensing unit 30 can be arranged in sequence; the third cabinet group III is arranged in sequence with one cabinet 20 and two condensing units 30 as shown in the figure, and similarly, one cabinet 20 and a plurality of condensing units 30 can be arranged in sequence.

[0154] In other possible implementation schemes, for the cabinet groups arranged in rows, the arrangement of each cabinet group can be the same or different, and can be determined according to the overall design requirements of the data center. The embodiments of the present application are not limited.

[0155] It should be understood that other functional components of the data center can be implemented according to the prior art, and therefore will not be described herein.

[0156] The above is only the preferred embodiment of the present application, and it should be pointed out that for ordinary skilled in the art, without departing from the principles of the present application, a number of improvements and refinements can be made, and these improvements and refinements should be considered as the protection scope of the present application.

Claims

1. A phase-change liquid cooling architecture for a data center, characterized in that, The data center phase change liquid cooling architecture includes a server room, server racks, and a condensation unit, water supply pipes, and return pipes fixed in the server room. The computer room includes a sealed equipment cavity, in which the server rack and the condensation unit are located, and the condensation unit is fixedly installed on the side of the server rack; The cabinet includes a cabinet body and a node. The node is located inside the cabinet body. The cabinet body has a liquid storage area that can hold the phase change working fluid. The cabinet also includes an exhaust opening and a liquid return interface. The exhaust opening and the liquid return interface are respectively connected to the liquid storage area inside the cabinet body. The condensation unit includes a condenser tube and a collection tank. The inlet of the condenser tube is connected to the water supply pipe, and the outlet of the condenser tube is connected to the return water pipe. The collection tank is located below the condenser tube and has a top opening and a liquid outlet. The top opening and the projection of the condenser tube on the computer room floor at least partially overlap. There is a return channel between the liquid outlet of the collection tank and the return liquid interface of the cabinet.

2. The data center phase change liquid cooling architecture according to claim 1, characterized in that, The projection of the condenser pipe onto the computer room floor coincides with the projection of the top slot onto the computer room floor; or, the projection of the condenser pipe onto the computer room floor is located within the projection of the top slot onto the computer room floor.

3. The data center phase change liquid cooling architecture according to claim 1 or 2, characterized in that, The condensation unit also includes a cover, a liquid outlet pipe, a water supply pipe, and a water return pipe. The condensation pipe is disposed in the cover, and the cover has an opening on the side opposite to the cabinet. The liquid collection tank is disposed at the bottom of the cover. The liquid outlet pipe is fixedly connected to the liquid collection tank. The water supply pipe and the water return pipe are fixedly connected to the cover. The water inlet of the condensation pipe is connected to the water supply pipe through the water supply pipe, and the water outlet of the condensation pipe is connected to the water return pipe through the water return pipe.

4. The data center phase change liquid cooling architecture according to claim 3, characterized in that, Multiple condenser pipes are connected in parallel between the water supply pipe and the water return pipe, forming a condenser pipe group.

5. The data center phase change liquid cooling architecture according to claim 4, characterized in that, The condensation unit includes multiple sets of condenser tubes, each condenser tube set further includes a water supply branch pipe and a water return branch pipe. The inlet of each condenser tube in the condenser tube set is connected to the water supply connector through the water supply branch pipe, and the outlet of each condenser tube in the condenser tube set is connected to the water return connector through the water return branch pipe.

6. The data center phase change liquid cooling architecture according to claim 5, characterized in that, Multiple sets of the condenser pipes are arranged sequentially in the vertical direction inside the cover, and the water supply pipe and the water return pipe extend in the vertical direction.

7. The data center phase change liquid cooling architecture according to any one of claims 3 to 6, characterized in that, The data center phase change liquid cooling architecture also includes a liquid storage tank and a working fluid pump. The liquid collection tank is connected to the liquid storage tank through the liquid outlet pipe. The liquid storage tank is connected to the liquid return interface of the cabinet through the liquid drain pipe to form the liquid return channel. The working fluid pump is used to pump the liquid working fluid in the liquid storage tank to the liquid drain pipe.

8. The data center phase change liquid cooling architecture according to claim 7, characterized in that, The liquid storage tank is located below the liquid collection tank.

9. The data center phase change liquid cooling architecture according to claim 7, characterized in that, The equipment cavity includes a floor surface, which is spaced from the floor of the computer room. The cabinet and the condensation unit are mounted on the floor surface, and the liquid storage tank is located below the floor surface.

10. The data center phase change liquid cooling architecture according to any one of claims 1 to 9, characterized in that, The condenser tube extends vertically and is located on the side of the cabinet.

11. The data center phase change liquid cooling architecture according to any one of claims 1 to 10, characterized in that, The condensation unit also includes an extended condenser pipe, which is located above the cabinet and extends horizontally. The inlet of the extended condenser pipe is connected to the water supply pipe, and the outlet of the extended condenser pipe is connected to the return water pipe.

12. The data center phase change liquid cooling architecture according to any one of claims 1 to 11, characterized in that, The chassis of the node forms a closed area that can accommodate the phase change working fluid.

13. The data center phase change liquid cooling architecture according to claim 12, characterized in that, The cabinet includes multiple nodes and a return pipe, which is fixedly mounted on the cabinet and extends out of the cabinet to form the return interface. The return pipe is connected to the inner cavity of the chassis of each node to transport the liquid working fluid into the chassis.

14. The data center phase change liquid cooling architecture according to claim 13, characterized in that, The return pipe extends vertically, and the return interface is located at the top or bottom of the return pipe.

15. The data center phase-change liquid cooling architecture according to claim 13 or 14, characterized in that, A flow valve is installed between the return pipe and the inlet of the node.

16. The data center phase-change liquid cooling architecture according to any one of claims 1 to 11, characterized in that, The cabinet forms a sealed area that can accommodate the phase change working fluid.

17. The data center phase-change liquid cooling architecture according to any one of claims 1 to 16, characterized in that, The number of cabinets is multiple, and the multiple cabinets are arranged in rows, with adjacent rows of cabinets spaced apart.

18. The data center phase change liquid cooling architecture according to claim 17, characterized in that, The number of condensation units is multiple, and the multiple condensation units are arranged in rows between two adjacent rows of cabinets.

19. The data center phase change liquid cooling architecture according to claim 18, characterized in that, The data center phase change liquid cooling architecture also includes a baffle; the exhaust opening of the node is located on the same side of the cabinet, the baffle and the cabinet enclose a collection area, and the exhaust opening and the condenser pipe are located in the collection area.

20. The data center phase change liquid cooling architecture according to claim 19, characterized in that, The baffle that encloses the gathering area includes a first baffle and a second baffle. The first baffle is fixedly connected between the tops of the cabinets of two adjacent rows of cabinets. The second baffle is located on the end side of the cabinets arranged in a row and is fixedly connected to the outer wall of the cabinets of two cabinets located on the same end side. There are two second baffles, located on the two end sides of the cabinets arranged in a row.

21. The data center phase change liquid cooling architecture according to any one of claims 1 to 20, characterized in that, The computer room also includes a buffer cavity that is separated from the equipment cavity. An inner door is provided on the partition wall between the equipment cavity and the buffer cavity, and an outer door is provided on the outer wall of the buffer cavity.

22. The data center phase change liquid cooling architecture according to claim 21, characterized in that, The equipment cavity includes a normally closed exhaust port, and a safety valve is installed at the exhaust port.

23. A computer room for setting up server racks, characterized in that, The machine room includes a sealed equipment chamber and a fixed condensation unit, water supply pipe and water return pipe; The condensation unit includes a condenser tube and a liquid collection tank. The inlet of the condenser tube is connected to the water supply pipe, and the outlet of the condenser tube is connected to the return water pipe. The liquid collection tank is located below the condenser tube and has a top opening and a liquid outlet. The top opening and the projection of the condenser tube on the computer room floor at least partially overlap. The condenser tube is located next to the cabinet inside the equipment cavity, and the liquid outlet of the liquid collection tank is used to form a liquid return channel with the liquid return interface on the cabinet side.

24. The computer room according to claim 23, characterized in that, The projection of the condenser pipe onto the computer room floor coincides with the projection of the top slot onto the computer room floor; or, the projection of the condenser pipe onto the computer room floor is located within the projection of the top slot onto the computer room floor.

25. The computer room according to claim 23 or 24, characterized in that, The condensation unit also includes a cover, a liquid outlet pipe, a water supply pipe, and a water return pipe. The condensation pipe is disposed in the cover, and the liquid collection tank is disposed at the bottom of the cover. The liquid outlet pipe is fixedly connected to the liquid collection tank, and the water supply pipe and the water return pipe are fixedly connected to the cover. The water inlet of the condensation pipe is connected to the water supply pipe through the water supply pipe, and the water outlet of the condensation pipe is connected to the water return pipe through the water return pipe.

26. The computer room according to claim 25, characterized in that, Multiple condenser pipes are connected in parallel between the water supply pipe and the water return pipe, forming a condenser pipe group. The condensation unit includes multiple condenser pipe groups, each condenser pipe group further including a water supply branch pipe and a water return branch pipe. The inlet of each condenser pipe in the condenser pipe group is connected to the water supply pipe through the water supply branch pipe, and the outlet of each condenser pipe in the condenser pipe group is connected to the water return pipe through the water return branch pipe.

27. The computer room according to any one of claims 23 to 26, characterized in that, The computer room also includes a liquid storage tank and a working fluid pump. The liquid collection tank is connected to the liquid storage tank through the liquid outlet pipe. The liquid storage tank is connected to the liquid return interface of the cabinet through the liquid drain pipe to form the liquid return channel. The working fluid pump is used to pump the liquid working fluid in the liquid storage tank to the liquid drain pipe.

28. The computer room according to any one of claims 23 to 27, characterized in that, The computer room is equipped with maintenance robots.

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