Phase-change liquid cooling architecture for data center, and machine room

Abstract

A phase-change liquid cooling architecture for a data center, and a machine room. The architecture comprises a cabinet located in a machine room, and a condensation unit, a water supply pipe, and a water return pipe which are fixed to the machine room. The cabinet comprises a sealed area capable of accommodating a phase-change working medium, and an exhaust port and a liquid return port separately communicated with the sealed area. The condensation unit comprises a housing and a condensation pipe located in an inner cavity of the housing. A water inlet of the condensation pipe is communicated with the water supply pipe, and a water outlet of the condensation pipe is communicated with the water return pipe. The housing is provided with a liquid outlet port and an air inlet port. The liquid outlet port and the air inlet port are separately communicated with the inner cavity of the housing. The liquid outlet port of the condensation unit can mate with the liquid return port of the cabinet to form a liquid return channel. The air inlet port of the condensation unit can mate with the exhaust port of the cabinet to form an exhaust channel. On the basis of the architecture design in which the condensation unit is decoupled from the cabinet, the condensation unit can be arranged by fully utilizing the space in the machine room, thereby achieving independent evolution of a CDU and the cabinet.

Description

Data center phase change liquid cooling architecture and machine room

[0001] The present application claims priority to the Chinese patent application No. 202411375345.5, filed on September 29, 2024, entitled "Data center phase change liquid cooling architecture and machine room", and No. 202411962971.4, filed on December 27, 2024, entitled "Data center phase change liquid cooling architecture and machine room", with the State Intellectual Property Office, the contents of which are incorporated herein by reference in their entirety. TECHNICAL FIELD

[0002] Embodiments of the present application relate to the technical field of data centers, in particular to a data center phase change liquid cooling architecture and machine room. BACKGROUND

[0003] 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 lower energy consumption and good heat dissipation capacity.

[0004] 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 directly contacts 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.

[0005] Taking a data center server as an example, in a typical phase change immersion liquid cooling scheme, the heat generated by the high-power components in the server node is transferred to the liquid working medium, the liquid working medium is vaporized, and then liquefied at the condenser of the cooling liquid distribution device (CDU) or the condenser. 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 overall weight is too large, which is not conducive to transportation and other operations. Limited by the transportation, the space available for 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

[0006] Embodiments of the present application provide a data center phase change liquid cooling architecture and machine room, which realizes the decoupling of the cooling liquid distribution device and the cabinet through the optimization of the phase change liquid cooling architecture, and provides technical support for the independent evolution of the CDU side and the cabinet side.

[0007] The first aspect of the embodiment of the present application provides a data center phase change liquid cooling architecture, which comprises cabinets located in a machine room, and a condensing unit, a water supply pipe and a return water pipe fixed to the machine room; the cabinet comprises a cabinet body and a node arranged in the cabinet body, the node comprises a power device to be cooled, and the cabinet body has a closed area capable of containing a phase change working medium; the cabinet further comprises an exhaust interface and a liquid return interface, the exhaust interface is in communication with the closed area in the cabinet body to exhaust the vapor state working medium in the closed area, and the liquid return interface is in communication with the closed area capable of containing the phase change working medium to deliver the liquid state working medium to the closed area; the condensing unit comprises a shell and a condensing pipe in the inner cavity of the shell, the water inlet of the condensing pipe is in communication with the water supply pipe, the water outlet of the condensing pipe is in communication with the return water pipe, cooling water can flow into the condensing pipe through the water supply pipe, after completing heat exchange and temperature rise, flow into the heat exchanger through the return water pipe, and after completing heat exchange and temperature drop, the cooling water can flow to the condensing unit through the water supply pipe again; the shell is provided with a liquid outlet interface and an air inlet interface, and the liquid outlet interface and the air inlet interface are respectively in communication with the inner cavity of the shell; the liquid outlet interface of the condensing unit can be docked with the liquid return interface of the cabinet to form a liquid return channel, and the air inlet interface of the condensing unit can be docked with the exhaust interface of the cabinet to form an exhaust channel, thereby constructing a phase change working medium working cycle.

[0008] In this way, after the cabinet enters the field, the liquid return channel and the exhaust channel between the condensing unit and the cabinet can be quickly formed by docking the liquid return interface and the exhaust interface on the corresponding cabinet with the liquid outlet interface and the air inlet interface provided by the condensing unit. The condensing unit, the water supply pipe and the return water pipe of the embodiment of the present application are arranged on the side of the machine room, thereby realizing the decoupling of the condensing unit and the cabinet in the architecture, and the condensing unit of the CDU and the cabinet can be independently evolved. In this way, the size and weight of the cabinet can be reasonably controlled, thereby facilitating the transfer transportation operation of the cabinet and the deployment operation in the machine room, and effectively reducing the packaging cost, storage cost and transportation cost of the cabinet.

[0009] In addition, the condensing unit of the phase change liquid cooling architecture is arranged on the side of the machine room, which can fully utilize the space of the machine room to layout the condensing unit, so as to obtain the heat exchange capacity meeting the heat dissipation demand of the cabinet, and can effectively avoid the problem that the overall heat exchange capacity of the condensing unit limits the performance evolution of the cabinet.

[0010] Based on the first aspect, the first embodiment of the first aspect is provided in the embodiment of the present application: the number of cabinets is multiple, and the number of condensing units is multiple; the condensing units are connected with the cabinets one by one, or at least two cabinets are connected with one condensing unit, or one cabinet is connected with at least two condensing units. In actual application, the condensing unit can be selected and configured according to the actual heat dissipation demand of the cabinet, and the corresponding phase change working medium working cycle is established, which has good adaptability, and based on good heat dissipation capacity, the stable reliability of equipment operation in different application scenarios can be guaranteed.

[0011] Compared with the condensing unit and the cabinet, the condensing unit can be arranged one by one, and the condensing unit can be independently configured according to the heat dissipation requirement of the corresponding cabinet, so as to realize the targeted adjustment and control of the cold quantity distributed to the corresponding cabinet, and facilitate the operation and maintenance operation.

[0012] In other practical applications, for a plurality of phase change immersion liquid cooling cabinets, one condensing unit can also be integrated and configured, and the condensing unit side can be connected with the exhaust interface and the liquid return interface of each cabinet side through the air inlet interface and the liquid outlet interface, and the corresponding liquid cooling working cycle is constructed based on the resource pooling condensing unit. In this way, the utilization rate of the heat dissipation capacity of the condensing unit can be further improved.

[0013] Based on the first embodiment of the first aspect, the second embodiment of the first aspect is also provided: the plurality of cabinets in the machine room are arranged in multiple rows, and the adjacent two rows of cabinets are arranged at intervals. In this way, the configuration needs of the diversity computing comprehensive capability can be met.

[0014] Based on the first aspect, the first embodiment of the first aspect, or the second embodiment of the first aspect, the third embodiment of the first aspect is also provided: the condensing unit is located above the cabinet. For the phase change working cycle between the condensing unit and the cabinet, based on the relative position relationship that the condensing unit is located above the cabinet, the liquid working medium in the condensing unit flows downward into the cabinet side through the liquid return channel, realizes gravity liquid return, and can further reduce the liquid return driving power consumption and the energy utilization efficiency (PUE) of the data center. Overall, in order to ensure that the equipment of each cabinet in the data center machine room maintains continuous high-load operation, effectively improves the efficiency, and provides good technical support.

[0015] In practical applications, the condensing unit can be located directly above the cabinet, or can be located above the side of the cabinet, in other words, the projection of the condensing unit and the cabinet on the floor surface of the machine room can be completely overlapped, partially overlapped, or completely staggered.

[0016] Exemplarily, the projection of the condensing unit and the cabinet on the floor surface of the machine room at least partially overlaps, or the projection of the condensing unit and the cabinet on the floor surface of the machine room does not overlap. In this way, the condensing unit can be arranged above the cabinet to provide overall heat exchange capacity to meet the heat dissipation requirement of the cabinet or equipment.

[0017] Other exemplarily, the projection area of the condensing unit on the floor surface of the machine room can be greater than the projection area of the cabinet on the floor surface of the machine room.

[0018] In the actual application, the machine room can include a partition plate, a space above the partition plate is a main device cavity, a space below the partition plate is an auxiliary device cavity, the cabinet is arranged in the main device cavity, and the condensing unit is arranged in the auxiliary device cavity. In this way, the space of the auxiliary device cavity is fully utilized to realize the condensing function, and the machine room based on the auxiliary device cavity formed by the raised floor can also be applied to the machine room based on the auxiliary device cavity formed by the multi-storey building.

[0019] In the actual application, the condensing unit is arranged on the side wall of the machine room, or the condensing unit is arranged between two adjacent rows of cabinets.

[0020] In the actual application, the condensing unit is arranged on the side wall of the machine room, or the condensing unit is arranged between two adjacent rows of cabinets.

[0021] In the actual application, the condensing unit is arranged on the side wall of the machine room, or the condensing unit is arranged between two adjacent rows of cabinets.

[0022] In the actual application, the condensing unit is arranged on the side wall of the machine room, or the condensing unit is arranged between two adjacent rows of cabinets.

[0023] Exemplarily, the plurality of condensing pipes can be arranged in layers in the vertical direction, and a large cold contact area is provided in the vertical direction in the condensing unit, thereby providing a good technical guarantee for heat exchange efficiency.

[0024] Exemplarily, the gas inlet pipe, the liquid outlet pipe, the water supply pipe and the water return pipe can be arranged in the vertical direction, so as to reasonably control the flow resistance of the working cycle of the phase-change working medium and the flow resistance of the working cycle of the cooling water on the secondary side, and further improve the heat exchange efficiency.

[0025] In actual application, the liquid outlet pipe and the gas inlet pipe are fixed to the bottom wall of the shell, the inner pipe opening of the liquid outlet pipe is not higher than the bottom wall of the inner cavity of the shell; that is, the inner pipe opening of the liquid outlet pipe can be flush with the bottom wall of the inner cavity of the shell, or can be lower than the bottom wall of the inner cavity of the shell, and the liquid working medium accumulated at the bottom of the shell can quickly supplement the liquid in the closed area of the cabinet. The inner pipe opening of the gas inlet pipe has a predetermined distance from the bottom wall of the inner cavity of the shell; in this way, the liquid working medium can be effectively controlled to enter the gas inlet pipe, and the utilization rate of the working medium in the system architecture can be avoided.

[0026] Based on 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 present embodiment further provides a ninth implementation of the first aspect: the water supply pipe and the water return pipe are both annular pipes, and in the pipe arrangement plane, the water supply pipe is located on the inner side of the water return pipe, or the water supply pipe is located on the outer side of the water return pipe. In this way, the water supply pipe and the water return pipe can be arranged in the internal space of the machine room, and the flow resistance can be reasonably controlled.

[0027] In actual applications, the cabinet includes a plurality of nodes, and the cabinet further includes an exhaust pipe and a liquid return pipe; the exhaust interface is located at the top of the exhaust pipe, and the exhaust pipe is in communication with the inner cavities of the nodes respectively to exhaust the vapor-phase working medium in the inner cavities; the liquid return interface is located at the top of the liquid return pipe, and the liquid return pipe is in communication with the inner cavities of the nodes respectively to deliver the liquid-phase working medium to the inner cavities. For the cabinet decoupled from the CDU, the exhaust pipe and the liquid return pipe in communication with the nodes can be configured to quickly build the working cycle of the phase-change working medium in the machine room, which has good operability.

[0028] In actual 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.

[0029] In other actual applications, a working medium pump can be arranged on the liquid return channel between the condensing unit and the cabinet. In this way, when the cooling demands of the cabinets are roughly the same, the liquid-phase working medium in the condensing unit flows into the corresponding cabinet based on the self-weight downflow, which can realize the on-demand distribution of cold energy and save the configuration cost and operation cost of the pumping components. When the cooling demands of the cabinets are not completely consistent, or when there is a high-power running period in the operation of part of the cabinets, the working medium pump can be started to realize the on-demand distribution of cold energy.

[0030] In addition, an air pump can also be arranged on the exhaust channel between the condensing unit and the cabinet. In this way, when the power consumption of the cabinet side is large and the vaporization amount of the liquid-phase working medium is too large, the air pump can be used to increase the exhaust speed and effectively improve the heat exchange efficiency of the system.

[0031] Based on 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, or the ninth implementation of the first aspect, or the tenth implementation of the first aspect, the eleventh implementation of the first aspect is provided in the embodiments of the present application: the cabinet body is sealed to form a closed area capable of accommodating the phase change working medium. In this way, the application needs of different scenarios can be met, and good adaptability is achieved.

[0032] The second aspect of the embodiments of the present application provides a machine room for arranging a cabinet, the machine room comprising a fixedly arranged condensing unit, a water supply pipe and a water return pipe; the condensing unit comprises a shell and a condensing pipe located in the inner cavity of the shell, the water inlet of the condensing pipe being in communication with the water supply pipe, and the water outlet of the condensing pipe being in communication with the water return pipe; the shell is provided with a liquid outlet interface and an air inlet interface, and the liquid outlet interface and the air inlet interface are respectively in communication with the inner cavity of the shell; the liquid outlet interface of the condensing unit is used to abut against the liquid return interface of the cabinet to form a liquid return channel, and the air inlet interface of the condensing unit is used to abut against the air outlet interface of the cabinet to form an air outlet channel. Based on the condensing unit, the water supply pipe and the water return pipe arranged on the side of the machine room, the condensing unit and the cabinet are decoupled, and the CDU can be evolved independently. In this way, the condensing unit can be fully utilized in the space layout of the machine room, the heat exchange capacity can be effectively improved, and good technical support is provided for the evolution of the performance of the cabinet.

[0033] Exemplarily, the cabinet in the machine room comprises, but is not limited to, a server, a storage device, a switch, a router, a firewall and the like.

[0034] In actual application, in addition to the phase change immersion liquid cooling cabinet, the cabinet or device with an independently configured heat dissipation structure can also be arranged in the machine room of the data center. For example, a cabinet or device with air cooling heat dissipation, or a cabinet or device with an independent liquid cooling heat dissipation structure.

[0035] Based on the second aspect, the first implementation of the second aspect is provided in the embodiments of the present application: the condensing unit is located above the cabinet arranged in the machine room. In this way, the liquid working medium in the condensing unit can flow downward into the cabinet side through the liquid return channel, gravity liquid return is achieved, the liquid return driving power consumption can be further reduced, and the PUE of the data center can be reduced.

[0036] In actual application, the condensing unit can be located directly above the cabinet, or can be located above the side of the cabinet. In other words, the projection of the condensing unit and the cabinet on the floor surface of the machine room can be completely overlapped, partially overlapped or completely staggered.

[0037] Exemplarily, the projection of the condensing unit and the cabinet on the floor surface of the machine room at least partially overlaps, or the projection of the condensing unit and the cabinet on the floor surface of the machine room does not overlap. In this way, the condensing unit can be arranged above the cabinet to make full use of the space above the cabinet, and the overall heat exchange capacity meeting the heat dissipation requirement of the cabinet or the equipment can be provided.

[0038] Exemplarily, the projection area of the condensing unit on the floor surface of the machine room can be greater than the projection area of the cabinet on the floor surface of the machine room.

[0039] Based on the second aspect, the embodiments of the present application further provide a second implementation of the second aspect: the condensing unit is located below the cabinet. In actual application, the machine room can include a partition plate, the space above the partition plate is a main equipment cavity, the space below the partition plate is an auxiliary equipment cavity, the cabinet is arranged in the main equipment cavity, and the condensing unit is arranged in the auxiliary equipment cavity. The space of the auxiliary equipment cavity is fully utilized to realize the condensing function, and the machine room based on the auxiliary equipment cavity formed by the raised floor can be applied, and the machine room based on the auxiliary equipment cavity formed by the multi-storey building can also be applied.

[0040] Based on the second aspect, the embodiments of the present application further provide a third implementation of the second aspect: the condensing unit is located beside the cabinet. In actual application, the condensing unit is located on the side wall of the machine room, or the condensing unit is located between two adjacent rows of cabinets.

[0041] Based on the second aspect, or the first implementation of the second aspect, or the second implementation of the second aspect, or the third implementation of the second aspect, the embodiments of the present application further provide a fourth implementation of the second aspect: the condensing unit, the water supply pipe and the return pipe are all fixed inside the machine room; or the condensing unit is fixed inside the machine room, and the water supply pipe and the return pipe are fixed outside the machine room; or the condensing unit, the water supply pipe and the return pipe are all fixed outside the machine room.

[0042] In actual application, for the case that the water supply pipe and the return pipe are fixed outside the machine room, the two can be connected with the condensing unit fixed inside the machine room through the top wall of the machine room. In this way, when the water supply pipe and the return pipe 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 reduced.

[0043] In other practical applications, for the case that the condensing unit, the water supply pipe and the return water pipe are fixed outside the machine room, the air inlet interface and the liquid outlet interface of the condensing unit are left in the machine room as the interfaces with the phase change liquid cooling cabinet. In this way, after the cabinet is built-in the machine room, the air outlet interface and the liquid return interface of the cabinet are respectively connected with the air inlet interface and the liquid outlet interface of the corresponding condensing unit, and the phase change working cycle can also be reliably constructed. In this way, the assembly and maintenance operation of the machine room side are facilitated, and the machine room side part of the phase change liquid cooling architecture can be assembled in advance according to the needs, thereby improving the whole process assembly efficiency.

[0044] Based on the second aspect, or the first implementation of the second aspect, or the second implementation of the second aspect, or the third implementation of the second aspect, or the fourth implementation of the second aspect, the embodiments of the present application further provide a fifth implementation of the second aspect: the condensing unit further comprises an air inlet pipe and a liquid outlet pipe, both of which are fixed on the shell and respectively communicate with the inner cavity of the shell; the outer pipe end of the air inlet pipe forms an air inlet interface, and the inner pipe opening of the air inlet pipe has a predetermined distance from the bottom wall surface of the inner cavity of the shell; the outer pipe end of the liquid outlet pipe forms a liquid outlet interface, and the inner pipe opening of the liquid outlet pipe is not higher than the bottom wall surface of the inner cavity of the shell. This has the characteristics of simple and reliable structure, and facilitates assembly operation.

[0045] Based on the fifth implementation of the second aspect, the embodiments of the present application further provide a sixth implementation of the second aspect: the condensing unit further comprises a water supply connector and a return water connector; a plurality of condensing pipes are arranged in the inner cavity of the shell, and the plurality of condensing pipes are connected in parallel between the water supply connector and the return water connector; the water inlet of the condensing pipe communicates with the water supply connector, and the water supply connector communicates with the water supply pipe; the water outlet of the condensing pipe communicates with the return water connector, and the return water connector communicates with the return water pipe. In this way, the cooling water flowing into each condensing pipe has a consistent low temperature, and the gaseous working medium entering the condensing unit can be quickly cooled and liquefied, which can further improve the heat exchange efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0046] FIG. 1 is a schematic diagram of a data center phase change liquid cooling architecture provided by the embodiments of the present application;

[0047] FIG. 2 is a schematic diagram of the machine room side of a data center phase change liquid cooling architecture provided by the embodiments of the present application;

[0048] FIG. 3 is a schematic diagram of the machine room side of the data center phase change liquid cooling architecture shown in FIG. 1;

[0049] FIG. 4 is a schematic diagram of the assembly relationship of each cabinet in the machine room shown in FIG. 1;

[0050] FIG. 5 is a schematic diagram of a cabinet provided by the embodiments of the present application;

[0051] FIG. 6 is a schematic diagram of the cabinet shown in FIG. 5 from another angle;

[0052] Fig. 7 is a schematic diagram of a condensing unit according to an embodiment of the present application;

[0053] Fig. 8 is a schematic diagram of the internal structure of the condensing unit shown in Fig. 7;

[0054] Fig. 9 is a schematic diagram of the connection relationship of the data center phase change liquid cooling architecture according to an embodiment of the present application;

[0055] Fig. 10 is a schematic diagram of the docking relationship between a cabinet and a condensing unit according to an embodiment of the present application;

[0056] Fig. 11 is an A-A sectional view of Fig. 7;

[0057] Fig. 12 is a B-B sectional view of Fig. 7;

[0058] Fig. 13 is a schematic diagram of another data center phase change liquid cooling architecture according to an embodiment of the present application;

[0059] Fig. 14 is a side view of Fig. 13;

[0060] Fig. 15 is a schematic diagram of still another data center phase change liquid cooling architecture according to an embodiment of the present application;

[0061] Fig. 16 is a schematic diagram of the structure of the data center phase change liquid cooling architecture shown in Fig. 15 from the perspective of the machine room;

[0062] Fig. 17 is a schematic diagram of still another data center phase change liquid cooling architecture according to an embodiment of the present application;

[0063] Fig. 18 is a schematic diagram of the structure of the data center phase change liquid cooling architecture shown in Fig. 17 from the perspective of the machine room;

[0064] Fig. 19 is a schematic diagram of still another data center phase change liquid cooling architecture according to an embodiment of the present application;

[0065] Fig. 20 is a schematic diagram of the structure of the data center phase change liquid cooling architecture shown in Fig. 19 from the perspective of the machine room;

[0066] Fig. 21 is a schematic diagram of the docking relationship between a cabinet and a condensing unit according to an embodiment of the present application;

[0067] Fig. 22 is a schematic diagram of still another data center phase change liquid cooling architecture according to an embodiment of the present application;

[0068] Fig. 23 is a schematic diagram of still another data center phase change liquid cooling architecture according to an embodiment of the present application. DETAILED DESCRIPTION

[0069] The present application provides a heat management and distribution implementation scheme for machine room level cooling, which can flexibly realize the layout of the condensing unit and meet the heat dissipation requirements of the data center servers.

[0070] A data center is used to implement 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 of the data center is also increasing, and the heat flux density is also significantly increasing. During operation, the equipment in the data center will generate a large amount of heat, and an effective cooling system is essential to maintain normal operation of the equipment and prolong the service life of the hardware.

[0071] In order to ensure the stability and reliability of the data center, the research and development of liquid cooling technology has become an important part of 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, and the heat generated by the electronic components on the server node side is transferred to the liquid phase change working medium (hereinafter referred to as liquid working medium). After reaching the boiling point of the working medium, it vaporizes, and the vapor phase change working medium (hereinafter referred to as vapor working medium) liquefies 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 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 its overall heat dissipation capacity and cannot adapt to the performance evolution needs of the data center server.

[0072] Therefore, an embodiment of the present application provides a data center phase change liquid cooling architecture, which includes a phase change immersion liquid cooling cabinet located in a machine room, and a condensing unit, a water supply pipe and a return water pipe fixed to the machine room.

[0073] The phase change immersion liquid cooling cabinet includes a cabinet body and a node, and the node is located in the cabinet body. The cabinet body has a closed area that can accommodate a phase change working medium, so that the power devices to be cooled of the node are immersed in the liquid working medium. The cabinet further includes an exhaust interface and a liquid return interface. The exhaust interface is in communication with the closed area in the cabinet body to exhaust the vapor working medium in the closed area, and the liquid return interface is in communication with the closed area in the cabinet body to deliver the liquid working medium to the closed area.

[0074] The phrase "the power device of the node is immersed in the liquid working medium" herein includes the case that the power device to be cooled is completely located below the liquid level of the working medium in the closed area, i.e., complete immersion; and also includes the case that part of the structure of the power device to be cooled is located below the liquid level of the working medium, i.e., partial immersion. For partial immersion, for example, the cold capacity can be allocated 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 capacity allocation, the liquid working medium in the corresponding cabinet or node is returned with a liquid amount less than the vaporization amount of the working medium 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, to reasonably regulate the system cold capacity.

[0075] The condensing unit is fixedly arranged at the machine room side, and the condensing unit includes a shell and a condensing pipe located in the inner cavity of the shell. The water inlet of the condensing pipe is in communication with the water supply pipe, and the water outlet of the condensing pipe is in communication with the water return pipe. The water supply pipe and the water return pipe are also fixedly arranged at the machine room side. 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 water return 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 formed.

[0076] The shell of the condensing unit is provided with a liquid outlet interface and an air inlet interface, which are respectively in communication with the inner cavity of the shell. The liquid outlet interface is used to butt joint with the liquid return interface of the cabinet side to form a liquid return channel, and the air inlet interface is used to butt joint with the air outlet interface of the cabinet side to form an air outlet channel. Thus, the phase change working medium working cycle is formed.

[0077] The data center phase change liquid cooling architecture provided by the embodiments of the present application adopts the architecture design of decoupling the condensing unit and the cabinet. The condensing unit, the water supply pipe and the water return pipe are all arranged at 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 and the air inlet interface provided by the condensing unit are respectively butt jointed with the liquid return interface and the air outlet interface on the corresponding cabinet to form the liquid return channel and the air outlet channel between the condensing unit and the cabinet. In this way, on the one hand, the size and weight of the cabinet can be reasonably controlled, the transfer transportation operation of the cabinet and the deployment operation in the machine room are facilitated, and the packaging cost, storage cost and transportation cost of the cabinet are effectively reduced. In addition, the condensing unit of the phase change liquid cooling architecture is arranged at the machine room side, and the condensing unit can be fully laid out in the machine room space to obtain the heat exchange capacity meeting the cabinet cooling requirement, and the problem that the overall heat exchange capacity of the condensing unit limits the performance evolution of the cabinet can be effectively avoided.

[0078] In order not to lose generality, specific embodiments will be described in detail below in combination with the drawings. Please refer to FIG. 1, which is a schematic diagram of a data center phase change liquid cooling architecture provided by the embodiments of the present application.

[0079] As shown in FIG. 1, the machine room 10 of the data center 100 is provided with an array of phase change immersion liquid cooling cabinets 20. Exemplarily, two rows of cabinets 20 arranged in a row are taken as an example for illustration in the figure, and the adjacent two rows of cabinets 20 are arranged with a spacing and can form a passage P for facilitating maintenance and repair. In a specific implementation, the number and arrangement form of the cabinets 20 can be determined by fully utilizing the space of the machine room 10 to form a multi-row and multi-column cabinet array to provide diversified computing and comprehensive capabilities, and the embodiments of the present application are not limited. Meanwhile, the cabinet 20 which can realize 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, and 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.

[0080] 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.

[0081] Among them, 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 connected with the cooling tower 51 of the machine room water system through the secondary side pipe network to distribute the cooling capacity of the cooling water to each cabinet 20 to be cooled.

[0082] Please refer to FIG. 2 and FIG. 3, wherein FIG. 2 is a schematic diagram of the machine room side of the data center phase change liquid cooling architecture provided by the embodiments of the present application, and FIG. 3 is a schematic diagram of the constitution of the machine room side of the data center phase change liquid cooling architecture shown in FIG. 1.

[0083] As shown in FIG. 2, 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 circulation (the solid line arrow in FIG. 2). The heat exchanger 54 is connected with the water supply pipe 41 and the return water pipe 42 of the secondary side pipe network, and the heat exchanger 54 and the water supply pipe 41 are provided with the secondary pump 55, thereby constructing a secondary side cooling water circulation (the solid line arrow in FIG. 2). During operation, the cooling water after being heated in the condensing unit 30 completes heat exchange in the heat exchanger 54 to become low-temperature cooling water, and the low-temperature cooling water is transported to the condensing unit 30 through the water supply pipe 41 under the action of the secondary pump 55.

[0084] It should be noted that the machine room water system 50 can also adopt other configuration forms, rather than the system structure shown in the figure. For example, but not limited to, the cold source of the machine room water system can also be a water source in the natural environment, rather than limited to the cooling tower, as long as it can provide the allocation of the required cooling capacity for the heat dissipation of the equipment in the machine room, and can take out the heat from the machine room. The embodiments of the present application are not limited.

[0085] As shown in FIG. 3, the cooling tower 51 as the cold source is arranged outside the machine room 10, and the condensing unit 30, the water supply pipe 41 and the return water pipe 42 are all fixed inside the machine room 10. In a specific implementation, other components of the machine room water system can also be arranged outside the machine room (not shown in the figure). Of course, in other possible implementation schemes, the components of the machine room water system can also be arranged inside the machine room 10.

[0086] The condensing unit 30 located on the machine room side includes an air inlet interface 311 and a liquid outlet interface 321, and correspondingly, the cabinet 20 side is provided with an air outlet interface 211 and a liquid return interface 221, please refer to FIG. 4 and FIG. 5, wherein FIG. 4 is a schematic diagram of a cabinet according to an embodiment of the present application, and FIG. 5 is a schematic diagram of the assembly relationship of the cabinets in the machine room shown in FIG. 1.

[0087] The cabinet 20 is built in the machine room 10, and the air outlet interface 211 of the cabinet 20 is connected with the air inlet interface 311 of the condensing unit 30, so that the gaseous working medium vaporized in the cabinet 20 flows into the condensing unit 30; the liquid return interface 221 of the cabinet 20 is connected with the liquid outlet interface 321 of the condensing unit 30, so that the liquid working medium liquefied in the condensing unit 30 is returned to the cabinet 20, thereby constructing a phase change working medium working cycle.

[0088] In a specific implementation, the cabinet 20 includes a cabinet body 24 and nodes 23, and a plurality of nodes 23 are located in the cabinet body 24, please refer to FIG. 6, which is another angle schematic diagram of the cabinet shown in FIG. 5. The cabinet of each node 23 is sealingly arranged, and a closed area capable of accommodating the phase change working medium is formed in the cabinet of the node 23, so that the power device 232 to be cooled of the node is immersed in the liquid working medium. Here, the power device 232 to be cooled includes but is not limited to processor chips, memory bars, network card chips and SSD disks, etc. For different types of node devices, the power device to be cooled can be different types of devices.

[0089] In the embodiment, the nodes 23 in the cabinet 20 are arranged in the height direction, i.e., a vertical cabinet. The cabinet 20 further comprises an exhaust pipe 21 and a liquid return pipe 22, which extend along the arrangement direction of the nodes 23. As shown in FIG. 6, the exhaust interface 211 is located at the top of the exhaust pipe 21, which is in communication with the inner cavity of the cabinet 231 of each node 23, so as to exhaust the vapor state working medium in the inner cavity of the cabinet 231; the liquid return interface 221 is located at the top of the liquid return pipe 22, which is in communication with the inner cavity of the cabinet 231 of each node 23, so as to deliver the liquid state working medium to the cabinet 231 of each node.

[0090] In other implementations, the nodes 23 in the cabinet 20 can also be arranged in the horizontal plane, i.e., a horizontal cabinet. Based on the exhaust pipe 21 and the liquid return pipe 22, the phase change working cycle can be constructed between the nodes 23 in the cabinet and the condensing unit 30. The embodiments of the present application are not limited in this regard.

[0091] In other possible implementations, the cabinet side can also be sealed at the cabinet level. That is, the cabinet body of the cabinet 20 is sealed, and a closed area capable of containing the phase change working medium is formed in the cabinet body, so that the power devices to be cooled of each node 23 are immersed in the liquid state working medium (not shown in the figure). Similarly, the exhaust passage can be formed by the exhaust interface 211 of the exhaust pipe 21 and the gas inlet interface 311 of the condensing unit 30, and the liquid return passage can be formed by the liquid return interface 221 of the liquid return pipe 22 and the liquid outlet interface 321 of the condensing unit 30.

[0092] Please refer to FIG. 7 and FIG. 8, wherein FIG. 7 is a schematic diagram of a condensing unit 30 provided by an embodiment of the present application, and FIG. 8 is a schematic diagram of the internal structure of the condensing unit shown in FIG. 7.

[0093] The condensing unit 30 comprises a gas inlet pipe 31, a liquid outlet pipe 32, a condensing pipe 33 and a shell 36. The condensing pipe 33 is located in the inner cavity of the shell 36, and the gas inlet pipe 31 and the liquid outlet pipe 32 are fixed on the shell 36 and are in communication with the inner cavity of the shell 36.

[0094] The water inlet of the condensing pipe 33 is in communication with a water supply pipe 41, and the water outlet of the condensing pipe 33 is in communication with a water return pipe 42. Please refer to FIG. 1, FIG. 2, FIG. 5 and FIG. 9, wherein FIG. 9 is a schematic diagram of the communication relationship of the data center phase change liquid cooling architecture shown in FIG. 1.

[0095] As shown in FIG. 9, the cooling water can flow into the condensing pipe 33 through the water supply pipe 41 and the water supply connector 34 of the condensing unit 30, complete heat exchange and temperature rise, and then flow into the heat exchanger through the water return connector 35 of the condensing unit 30 and the water return pipe 42, complete heat exchange and temperature drop, and then the cooling water can flow to the condensing unit 30 through the water supply pipe 41. Exemplarily, the water supply connector 34 and the water return connector 35 shown in the figure are vertically arranged to reasonably control the flow resistance and improve the heat exchange efficiency. In other possible implementation schemes, in order to meet the overall layout requirements of the architecture, the water supply connector 34 and the water return connector 35 can also be arranged as needed, instead of being limited to the vertical extension shown in the figure.

[0096] Wherein, the outer pipe end of the air inlet pipe 31 extending downward forms an air inlet interface 311 for docking with the air outlet interface 211 of the air outlet pipe 21 on the side of the cabinet 20; the outer pipe end of the liquid outlet pipe 32 extending downward forms a liquid outlet interface 321 for docking with the liquid return interface 221 of the liquid return pipe 22 on the side of the cabinet 20. Please refer to FIG. 10, which is a schematic diagram of the docking relationship between the cabinet and the condensing unit provided by the embodiment of the present application.

[0097] In the embodiment, the condensing unit 30 fixedly arranged on the side of the machine room 10 is located above the cabinet 20. In this way, when the power devices in the phase change immersion liquid cooling node generate heat, the liquid working medium is heated to vaporize when the temperature exceeds the boiling point, as shown by the dashed arrows in FIG. 10, the vaporized working medium is discharged from the node 23, rises to the condensing unit 30 through the air outlet pipe 21 of the cabinet 20, contacts the condensing pipe 33 in the condensing unit 30, and liquefies after being cooled, as shown by the solid arrows in FIG. 10, the liquid working medium can flow out of the condensing unit 30 based on the gravity and is returned to each node 23 through the liquid return pipe 22 of the cabinet 20, to complete a liquid cooling cycle. Based on the relative position relationship that the condensing unit 30 is located above the cabinet 20, the liquid working medium in the condensing unit 30 can flow downward to the side of the cabinet 20 through the liquid return channel, to realize gravity liquid return, which can further reduce the power consumption of the liquid return drive and the PUE of the data center.

[0098] In specific implementation, the condensing unit 30 can be located directly above the cabinet 20, or can be located above the side of the cabinet 20, in other words, the projection of the condensing unit 30 and the cabinet 20 on the floor of the machine room can completely overlap, partially overlap, or completely stagger.

[0099] In specific implementation, in the height direction, the air inlet interface 311 of the air inlet pipe 31 and the air outlet interface 211 of the air outlet pipe 21 on the side of the cabinet 20 can be docked through the air path transition connector 81; the liquid outlet interface 321 of the liquid outlet pipe 32 and the liquid return interface 221 on the side of the cabinet 20 can be docked through the liquid path transition connector 82. In this way, on the one hand, the size control of the mutual docking can be reasonably controlled, and on the other hand, based on the arrangement of the corresponding transition connector, the operability of the cabinet in the field assembly can also be improved.

[0100] It can be understood that the gas path transition connector 81 and the liquid path transition connector 82 can be implemented by using the prior art, which will not be described here.

[0101] For the implementation scheme of node-level sealing on the cabinet side, when the power consumption of the power devices to be cooled in each node 23 in the cabinet 20 is different, the liquid return amount of the liquid refrigerant can be allocated according to the actual cooling demand of the node. The "different power consumption" of the node here refers to the total power consumption of all power devices to be cooled in each node. In a specific implementation, a flow valve 70 (as shown in FIG. 6) 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 cooling demand, and realize the on-demand distribution of cooling capacity.

[0102] As shown in FIG. 8, the inner pipe opening 322 of the liquid outlet pipe 32 can be flush with the bottom wall surface of the inner cavity of the shell 36, or can be lower than the bottom wall surface of the inner cavity of the shell 36. In this way, the liquid refrigerant accumulated at the bottom of the shell 36 can quickly supplement the liquid in the sealed area on the cabinet 20 side.

[0103] In addition, the inner pipe opening 312 of the gas inlet pipe 31 is higher than the bottom wall surface of the inner cavity of the shell 36. Please refer to FIG. 11 and FIG. 12, wherein FIG. 11 is an A-A cross-sectional view of FIG. 7, and FIG. 12 is a B-B cross-sectional view of FIG. 7. The inner pipe opening 312 of the gas inlet pipe 31 and the bottom wall surface of the inner cavity of the shell 36 can have a predetermined distance L, so as to limit the liquid refrigerant from entering the gas inlet pipe 31, and avoid the liquid refrigerant from entering the gas inlet pipe and affecting the utilization rate of the refrigerant in the system architecture.

[0104] In a specific implementation, the distance L of the inner pipe opening 312 of the gas inlet pipe 31 relative to the bottom wall surface of the inner cavity of the shell 36 can be determined according to the overall design requirements of the product, and the heat exchange capacity of the condensing unit side is configured to meet the cooling demand of the cabinet side, for example but not limited to, the liquid amount of the refrigerant in the liquid cooling cycle and the heat exchange area provided by the condensing pipe, etc., which is not limited by the embodiments of the present application.

[0105] For the condensing pipe 33 in the condensing unit 30, a serpentine arrangement can be used in the pipe arrangement plane, as shown in FIG. 8, the condensing pipe 33 includes a plurality of sequentially connected extension pipe segments 331 and bending pipe segments 332, and the whole is in a serpentine shape. In this way, the available space of the condensing unit 30 can be fully utilized to provide heat exchange area. Exemplarily, the extension pipe segment 331 can be a straight pipe segment as shown in the figure, and two adjacent straight pipe segments are connected by a bending pipe segment 332, which has good forming processability.

[0106] To further improve the heat exchange efficiency, a plurality of condensing pipes 33 can be arranged in the shell 36, each condensing pipe 33 is arranged in layers, and the water inlet of each condensing pipe 33 is communicated with the water supply connector 34, and the water outlet of each condensing pipe 33 is communicated with the water return connector 35. That is, the plurality of condensing pipes 33 of the condensing unit 30 are arranged in parallel between the water supply connector 34 and the water return connector 35.

[0107] Exemplarily, four condensing pipes 33 arranged in layers are taken as an example in the figure to show the parallel relationship between each condensing pipe 33. In this way, the cooling water flowing into each condensing pipe 33 has a consistent low temperature, and the condensing pipes 33 arranged in layers can provide higher heat exchange capacity, so that the vapor working medium entering the condensing unit 30 can be quickly cooled and liquefied, effectively improving the heat exchange efficiency.

[0108] In a specific implementation, each serpentine layer condensing pipe 33 can be arranged in the vertical direction, and the extension pipe sections 331 of adjacent two layers of condensing pipes 33 are arranged alternately, thereby providing a larger cold contact area in the vertical direction in the condensing unit 30, which provides a good technical guarantee for ensuring the heat exchange efficiency.

[0109] In addition, the condensing unit 30 and the cabinet 20 can be arranged one by one. As shown in combination 9, corresponding to the row of cabinets 20, the condensing units 30 are also arranged in rows, each condensing unit 30 is located above the corresponding cabinet 20, and is arranged one by one to form a liquid cooling working cycle. In this way, according to the heat dissipation demand of the corresponding cabinet 20, the corresponding condensing unit 30 can be independently configured, which is convenient for targetedly adjusting and controlling the cooling capacity distributed to the corresponding cabinet 20, and is convenient for operation and maintenance.

[0110] In other specific implementations, the condensing unit 30 and the cabinet 20 can also be arranged in a non-one-to-one corresponding manner.

[0111] For example, the condensing unit 30 fixed on the side of the machine room 10 can be configured to have a larger heat exchange capacity, and the condensing unit 30 can be arranged corresponding to a plurality of cabinets 20, in other words, a plurality of cabinets 20 and the same condensing unit 30 form a liquid cooling cycle respectively.

[0112] For another example, for the cabinet 20 with large power consumption, a plurality of condensing units 30 can also be arranged corresponding, in other words, the cabinet 20 and a plurality of condensing units 30 form a liquid cooling cycle respectively.

[0113] In addition, in order to simplify the secondary side pipe network, the water supply pipe 41 and the water return pipe 42 can be arranged as a closed annular pipe to be communicated with the water supply connector 34 and the water return connector 35 of each condensing unit 30 respectively, and a cooling water working cycle of the secondary side is formed. In this way, the flow resistance can be reasonably controlled.

[0114] In a specific implementation, in the pipe arrangement plane, the annular water supply pipe 41 can be located inside the annular water return pipe 42; of course, in other specific implementations, the annular water supply pipe 41 can also be located outside the annular water return pipe 42. The embodiments of the present application are not limited in this regard.

[0115] Based on the decoupled architecture design of the condensing unit and the cabinet provided in the embodiments of the present application, the condensing unit 30 and the cabinet can be independently configured to improve the device performance and obtain good heat dissipation capacity. Please refer to FIG. 13 and FIG. 14, wherein FIG. 13 is a schematic diagram of the connection relationship of another data center phase change liquid cooling architecture provided in the embodiments of the present application, and FIG. 14 is a side view of FIG. 13. In order to clearly show the difference and connection between the present embodiment and the previous embodiment, the same function or structure is schematically shown with the same reference numeral in the figure.

[0116] As shown in FIG. 14, the condensing unit 30 of the data center phase change liquid cooling architecture is arranged above the cabinets 20 arranged in rows. Among them, part of the condensing units 30 is located directly above the cabinets 20, and part of the condensing units 30 is located above the side area of the cabinet 20, for example but not limited to, part of the condensing units 30 is arranged directly above the passage P between the two adjacent rows of cabinets 20. By increasing the volume of the condensing unit 30, more space for arranging the condensing pipe in the condensing unit 30 can be obtained to improve the overall heat exchange capacity of the condensing unit 30.

[0117] In this way, the condensing unit 30 can be arranged according to the heat dissipation demand of the equipment in the machine room and the arrangeable space in the machine room. In a specific implementation, the projection area of each condensing unit 30 on the floor of the machine room is greater than the projection area of each cabinet 20 on the floor of the machine room.

[0118] In addition, 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 machine room 10 can also be fully utilized to reasonably allocate the condensing unit 30, and the volume of the condensing unit 30 can be increased without increasing the space occupied by the condensing unit 30 in the horizontal plane. That is, by increasing the arrangeable space of the condensing pipe in the condensing unit 30, the heat exchange capacity can be improved.

[0119] For each cabinet 20 in the machine room 10, when the heat dissipation demand of each cabinet is roughly the same, the liquid working medium in the condensing unit 30 flows into the corresponding cabinet 20 based on the self-weight downward flow, and the cold energy can be distributed on demand. Compared with this, the configuration cost and operation cost of the pumping component can be saved.

[0120] In a specific implementation, a working medium pump 60 (as shown in FIG. 10) can be arranged on the liquid return channel between the condensing unit 30 and the corresponding cabinet 20 to increase the liquid return flow. For example, when the heat dissipation demands of each cabinet are not completely consistent, or when there is a high-power running period in the operation of part of the cabinets, the working medium pump can be used to realize the on-demand distribution of cold energy.

[0121] Of course, for multiple phase change immersion liquid cooling cabinets 20, a condensing unit (not shown in the figure) can also be integrated according to the overall design requirements of the architecture, and the condensing unit side can be connected to the exhaust interface and the liquid return interface of each cabinet side through the air inlet interface and the liquid outlet interface, respectively, based on the resource pooling of the condensing unit, and the corresponding liquid cooling working cycle is constructed. In this way, the utilization rate of the condensing unit heat dissipation capacity of the architecture can be further improved.

[0122] 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 using air cooling or cabinets or devices using independent liquid cooling structures. The embodiments of the present application are not limited.

[0123] The water supply pipe 41 and the water return pipe 42 in the foregoing embodiment are fixed inside the machine room 10. In specific implementation, 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. Please refer to FIG. 15 and FIG. 16, wherein FIG. 15 is a schematic diagram of another data center phase change liquid cooling architecture provided by the embodiments of the present application, and FIG. 16 is a schematic diagram of the machine room side structure of the data center phase change liquid cooling architecture shown in FIG. 15. In order to clearly show the difference and connection between the present embodiment and the foregoing embodiments, the same function or structure is schematically shown with the same mark in the figure.

[0124] The data center phase change liquid cooling architecture shown in FIG. 15 has the water supply pipe 41 and the water return pipe 42 fixed outside the machine room 10. In specific implementation, the two are connected through the top wall of the machine room 10 and the condensing unit 30 fixed inside 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 inside of the machine room, which can further reduce the influence of operation and maintenance on the environment inside the machine room.

[0125] Other functional structures and specific implementations can be the same as those of the foregoing embodiments. Here, no further description is given.

[0126] In other specific implementations, the condensing unit 30 can also be arranged outside the machine room. Please refer to FIG. 17 and FIG. 18, wherein FIG. 17 is a schematic diagram of another data center phase change liquid cooling architecture provided by the embodiments of the present application, and FIG. 18 is a schematic diagram of the machine room side structure of the data center phase change liquid cooling architecture shown in FIG. 17. In order to clearly show the difference and connection between the present embodiment and the foregoing embodiments, the same function or structure is schematically shown with the same mark in the figure.

[0127] The data center phase change liquid cooling architecture shown in FIG. 17 has the condensing unit 30 and the water supply pipe 41 and the water return pipe 42 fixed outside the machine room 10, and the air inlet interface and the liquid outlet interface of the condensing unit 30 are located inside the machine room 10. That is, compared with the foregoing embodiments, the present embodiment only leaves the air inlet interface and the liquid outlet interface of the condensing unit 30 inside the machine room 10 as the interface with the phase change liquid cooling cabinet 20. In this way, after the cabinet 20 is built-in the machine room 10, the air outlet interface and the liquid return interface of the cabinet 20 are respectively docked with the air inlet interface and the liquid outlet interface of the corresponding condensing unit 30, and the phase change working fluid cycle can also be reliably constructed. In this way, the assembly and maintenance operation of the machine room side is facilitated, and the machine room side part of the phase change liquid cooling architecture can be assembled in advance according to the need, thereby improving the overall assembly efficiency.

[0128] Other functional configurations and specific implementations can be the same as those of the foregoing embodiments. Details are not described here.

[0129] The condensing units 30 in the foregoing embodiments are arranged above the cabinets 20, and in specific implementations, the condensing units 30 fixed on the machine room side can also be arranged in different ways according to overall product design requirements.

[0130] Please refer to FIG. 19 and FIG. 20, wherein FIG. 19 is a schematic diagram of another data center phase change liquid cooling architecture provided by the embodiments of the present application, and FIG. 20 is a schematic diagram of the machine room side configuration of the data center phase change liquid cooling architecture shown in FIG. 19. In order to clearly show the differences and connections between the present embodiment and the foregoing embodiments, the same functional configurations or structures are shown with the same reference signs in the figures.

[0131] The data center phase change liquid cooling architecture shown in FIG. 19 has the condensing unit 30 located below the cabinet 20. Specifically, the machine room 10 includes a floor 101 that separates the machine room 10 into a main device cavity 102 and an auxiliary device cavity 103, the cabinet 20 is located in the main device cavity 102 above the floor 101, and the condensing unit 30 and the water supply pipe 41 and the water return pipe 42 are fixed in the auxiliary device cavity 103 below the floor 101. A working fluid pump 60 is arranged on the liquid return channel between the condensing unit 30 and the corresponding cabinet 20.

[0132] Please refer to FIG. 21, which is a schematic diagram of the docking relationship between the cabinet and the condensing unit provided by the embodiments of the present application. As shown by the dashed arrows in FIG. 21, after the liquid working fluid is heated to above the boiling point and vaporized, the vaporized working fluid is discharged from the node 23, flows downward through the exhaust pipe 21 of the cabinet 20, and enters the condensing unit 30; the vaporized working fluid contacts the condensing pipe 33 in the condensing unit 30, liquefies after being cooled, and is pumped out of the condensing unit 30 by the working fluid pump 60, and is then returned to each node 23 through the liquid return pipe 22 of the cabinet 20, thereby completing a liquid cooling working cycle.

[0133] In a specific implementation, an air pump 80 can also be arranged on the exhaust passage between the condensing unit 30 and the corresponding cabinet 20 to increase the exhaust speed. For example, when the power consumption of the cabinet side is large and the vaporization amount of the liquid working medium is too large, the air pump 80 can be used to increase the exhaust speed. In this way, the heat exchange efficiency of the system can be effectively improved, and good adaptability is achieved.

[0134] In addition, the cold tower 51 as the cold source is arranged outside the machine room 10, and is fixedly arranged in the auxiliary equipment cavity 103 together with the condensing unit 30, the water supply pipe 41 and the return water pipe 42. Correspondingly, other components of the machine room water system can also be arranged in the auxiliary equipment cavity 103 (not shown in the figure). Of course, in other implementations, the components of the machine room water system can also be arranged inside the main equipment cavity 102 of the machine room 10 (not shown in the figure). In other possible implementations, the components of the machine room water system can also be arranged outside the machine room 10 (not shown in the figure). The embodiments of the present application are not limited.

[0135] It can be understood that the main equipment cavity 102 and the auxiliary equipment cavity 103 can be separated by the floor 101 arranged in the machine room 10 as a partition plate. In other specific implementations, the main equipment cavity 102 and the auxiliary equipment cavity 103 can also be floor layers of a two-story machine room 10 structure (not shown in the figure), that is, the floor layer is used as a partition plate, the main equipment cavity 102 is an upper space above the floor layer, and the main equipment cavity 102 is a lower space below the floor layer. For example, the main equipment cavity 102 is located in the first floor space of the machine room, and the auxiliary equipment cavity 103 is located in the basement of the machine room; for another example, the main equipment cavity 102 is located in the second floor space of the machine room, and the auxiliary equipment cavity 103 is located in the first floor space of the machine room.

[0136] Other functional components and specific implementations can be the same as those of the foregoing embodiments. Details are not described here.

[0137] Please refer to FIG. 22, which is a schematic diagram of another data center phase change liquid cooling architecture provided by the embodiments of the present application. In order to clearly show the differences and relationships between the present embodiment and the foregoing embodiments, the same functional components or structures are shown in the same mark in the figure.

[0138] The data center phase change liquid cooling architecture shown in FIG. 22 has the condensing unit 30 located beside the cabinet 20, specifically arranged in the passage P between the two adjacent rows of cabinets 20, which can fully utilize the space between the multiple rows and columns of cabinet arrays to realize the condensing function.

[0139] In a specific implementation, the condensing unit 30 can be completely located in the passage P between the two adjacent rows of cabinets 20, or the condensing unit 30 can be arranged to exceed the two adjacent rows of cabinets 20 in the height direction, which can be determined according to the overall design requirements of the product. The embodiments of the present application are not limited.

[0140] Correspondingly, the water supply pipe 41 and the water return pipe 42 can also be fixedly arranged in the machine room together, or fixedly arranged outside the machine room (not shown in the figure). Other functional components and specific implementations can be the same as the foregoing embodiments. Details are not repeated here.

[0141] Please refer to FIG. 23, which is a schematic diagram of another data center phase change liquid cooling architecture provided by the embodiments of the present application. In order to clearly show the differences and relationships between the present embodiment and the foregoing embodiments, the same functional components or structures are shown with the same reference numerals in the figure.

[0142] The data center phase change liquid cooling architecture shown in FIG. 23 has the condensing unit 30 located beside the cabinet 20, specifically arranged on the side wall of the machine room 10. In specific implementations, the condensing unit 30 can be arranged on part of the side wall of the machine room 10, or the condensing unit 30 can be arranged on all the side walls of the machine room 10. The specific arrangement can be determined according to the overall design requirements of the product. The embodiments of the present application are not limited.

[0143] Correspondingly, the water supply pipe 41 and the water return pipe 42 can also be fixedly arranged in the machine room together, or fixedly arranged outside the machine room (not shown in the figure). Other functional components and specific implementations can be the same as the foregoing embodiments. Details are not repeated here.

[0144] Of course, in other possible implementations, the condensing unit 30 can be arranged by combining the above implementations, for example, part of the condensing unit 30 is arranged above the cabinet 20, and part of the condensing unit 30 is arranged beside the cabinet 20; for another example, part of the condensing unit 30 is arranged above the cabinet 20, and part of the condensing unit 30 is arranged in the passage P between two adjacent rows of cabinets 20; for another example, part of the condensing unit 30 is arranged on the side wall of the machine room 10, and part of the condensing unit 30 is arranged in the auxiliary equipment cavity 103 of the machine room.

[0145] It should be understood that other functional components of the data center can be implemented according to the prior art, and therefore details are not repeated here.

[0146] The above is only the preferred embodiment of the present application. It should be noted that for those skilled in the art, without departing from the principles of the present application, several improvements and refinements can be made, which should also be considered as the protection scope of the present application.

Claims

1. A data center phase change liquid cooling architecture, comprising: The data center phase change liquid cooling architecture comprises cabinets in a machine room, and a condensing unit, a water supply pipe and a return water pipe fixed to the machine room; The cabinet comprises a cabinet body and a node arranged in the cabinet body, the node comprising a power device to be cooled, and the cabinet body having a closed area capable of containing a phase change working medium; the cabinet further comprises an exhaust interface and a return liquid interface, which are respectively communicated with the closed area capable of containing the phase change working medium; The condensing unit comprises a shell and a condensing pipe in the inner cavity of the shell, the water inlet of the condensing pipe being communicated with the water supply pipe, and the water outlet of the condensing pipe being communicated with the return water pipe; the shell is provided with a liquid outlet interface and an air inlet interface, which are respectively communicated with the inner cavity of the shell; The liquid outlet interface of the condensing unit can be docked with the return liquid interface of the cabinet to form a return liquid channel, and the air inlet interface of the condensing unit can be docked with the exhaust interface of the cabinet to form an exhaust channel.

2. The data center phase change liquid cooling architecture of claim 1, wherein, The number of the cabinets is multiple, and the number of the condensing units is multiple; the condensing units are connected with the cabinets one by one, or at least two cabinets are connected with one condensing unit, or one cabinet is connected with at least two condensing units.

3. The data center phase change liquid cooling architecture of claim 2, wherein, The multiple cabinets are arranged in multiple rows, and adjacent two rows of the cabinets are arranged at intervals.

4. The data center phase change liquid cooling architecture of any of claims 1-3, wherein, The condensing unit is located above the cabinet.

5. The data center phase change liquid cooling architecture of claim 4, wherein, The projections of the condensing unit and the cabinet on the floor surface of the machine room at least partially overlap, or the projections of the condensing unit and the cabinet on the floor surface of the machine room do not overlap.

6. The data center phase change liquid cooling architecture of any of claims 1-3, wherein, The condensing unit is located below the cabinet.

7. The data center phase change liquid cooling architecture of claim 6, wherein, The machine room comprises a partition plate, the space above the partition plate being a main device cavity, and the space below the partition plate being an auxiliary device cavity, the cabinet being arranged in the main device cavity, and the condensing unit being arranged in the auxiliary device cavity.

8. The data center phase change liquid cooling architecture of any of claims 1-3, wherein, The condensing unit is located beside the cabinet.

9. The data center phase change liquid cooling architecture of claim 8, wherein, The condensing unit is located on the side wall of the machine room, or the condensing unit is located between adjacent two rows of the cabinets.

10. The data center phase change liquid cooling architecture of any of claims 1-9, wherein, The condensing unit further comprises an air inlet pipe and a liquid outlet pipe, both of which are fixed to the shell and are respectively communicated with the inner cavity of the shell; the outer pipe end of the air inlet pipe forms the air inlet interface, and the outer pipe end of the liquid outlet pipe forms the liquid outlet interface.

11. The data center phase change liquid cooling architecture of claim 10, wherein, The condensing unit further comprises a water supply connecting pipe and a return water connecting pipe; the water inlet of the condensing pipe is communicated with the water supply connecting pipe, and the water supply connecting pipe is communicated with the water supply pipe; the water outlet of the condensing pipe is communicated with the return water connecting pipe, and the return water connecting pipe is communicated with the return water pipe.

12. The data center phase change liquid cooling architecture of claim 11, wherein, The inner cavity of the shell is provided with multiple condensing pipes, and the multiple condensing pipes are connected in parallel between the water supply connecting pipe and the return water connecting pipe; the condensing pipe comprises multiple extension pipe sections and bending pipe sections connected in sequence and arranged in a meandering and bending shape in a pipe arrangement plane; the condensing pipes are arranged in layers, and the extension pipe sections of adjacent two layers of the condensing pipes are arranged in a staggered manner.

13. The data center phase change liquid cooling architecture of claim 12, wherein, The multiple condensing pipes are arranged in layers at intervals in the vertical direction.

14. The data center phase change liquid cooling architecture of any of claims 11-13, wherein, The air inlet pipe, the liquid outlet pipe, the water supply connecting pipe and the return water connecting pipe are all arranged in the vertical direction.

15. The data center phase change liquid cooling architecture of claim 14, wherein, The liquid outlet pipe and the air inlet pipe are fixed to the bottom wall of the shell, the inner pipe opening of the liquid outlet pipe is not higher than the inner cavity bottom wall surface of the shell, and a predetermined distance is provided between the inner pipe opening of the air inlet pipe and the inner cavity bottom wall surface of the shell.

16. The data center phase change liquid cooling architecture of any of claims 1-15, wherein, The water supply pipe and the water return pipe are annular pipes, and in the pipe arrangement plane of the water supply pipe and the water return pipe, the water supply pipe is located on the inner side of the water return pipe, or the water supply pipe is located on the outer side of the water return pipe.

17. The data center phase change liquid cooling architecture of any of claims 1-16, wherein, The node cabinet is sealed to form a closed area capable of containing the phase change working medium.

18. The data center phase change liquid cooling architecture of claim 17, wherein, The cabinet includes a plurality of nodes, and further includes an exhaust pipe and a liquid return pipe; the exhaust interface is located at the top of the exhaust pipe, and the exhaust pipe is in communication with the inner cavities of the node cabinets respectively to exhaust the vapor state working medium in the inner cavities of the node cabinets; The liquid return interface is located at the top of the liquid return pipe, and the liquid return pipe is in communication with the inner cavities of the node cabinets respectively to deliver the liquid state working medium to the node cabinets.

19. The data center phase change liquid cooling architecture of claim 18, wherein, A flow valve is arranged between the liquid return pipe and the liquid inlet of the node.

20. The data center phase change liquid cooling architecture of any one of claims 1 to 19, wherein, A working medium pump is arranged on the liquid return channel between the condensing unit and the cabinet.

21. The data center phase change liquid cooling architecture of any one of claims 1 to 20, wherein, An air pump is arranged on the exhaust channel between the condensing unit and the cabinet.

22. The data center phase change liquid cooling architecture of any of claims 1-16, wherein, The cabinet body is sealed to form a closed area capable of containing the phase change working medium.

23. A machine room for housing a rack, characterized by The machine room includes a fixedly arranged condensing unit, a water supply pipe and a water return pipe; The condensing unit includes a shell and a condensing pipe located in the inner cavity of the shell, the water inlet of the condensing pipe is in communication with the water supply pipe, and the water outlet of the condensing pipe is in communication with the water return pipe; the shell is provided with a liquid outlet interface and an air inlet interface, and the liquid outlet interface and the air inlet interface are in communication with the inner cavity of the shell respectively; The liquid outlet interface of the condensing unit is used to dock with the liquid return interface of the cabinet to form a liquid return channel, and the air inlet interface of the condensing unit is used to dock with the exhaust interface of the cabinet to form an exhaust channel.

24. The machine room of claim 23, wherein, The condensing unit is located above the cabinet in the machine room.

25. The machine room of claim 23, wherein, The condensing unit is located below the cabinet.

26. The machine room of claim 25, wherein, The machine room includes a partition plate, the space above the partition plate is a main device cavity, the space below the partition plate is an auxiliary device cavity, the cabinet is arranged in the main device cavity, and the condensing unit is arranged in the auxiliary device cavity.

27. The machine room of claim 23, wherein, The condensing unit is located beside the cabinet.

28. The machine room of claim 27, wherein, The condensing unit is located on the side wall of the machine room, or the condensing unit is located between two adjacent rows of cabinets.

29. The machine room according to any one of claims 23 to 28, wherein, The condensing unit, the water supply pipe and the water return pipe are fixed to the interior of the machine room; or the condensing unit is fixed to the interior of the machine room, and the water supply pipe and the water return pipe are fixed to the exterior of the machine room; or the condensing unit, the water supply pipe and the water return pipe are fixed to the exterior of the machine room.

30. The machine room according to any one of claims 23 to 29, wherein, The condensing unit further includes an air inlet pipe and a liquid outlet pipe, both of which are fixed to the shell and in communication with the inner cavity of the shell respectively; the outer pipe end of the air inlet pipe forms the air inlet interface, and the outer pipe end of the liquid outlet pipe forms the liquid outlet interface.

31. The machine room of claim 30, wherein, The condensing unit further comprises a water supply connector and a water return connector; a plurality of the condensing pipes are arranged in the inner cavity of the shell, and the plurality of the condensing pipes are arranged in parallel between the water supply connector and the water return connector; a water inlet of the condensing pipe is communicated with the water supply connector, and the water supply connector is communicated with the water supply pipe; a water outlet of the condensing pipe is communicated with the water return connector, and the water return connector is communicated with the water return pipe.

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