Centralized cooling distribution unit (CDU)

Abstract

The utility model discloses a centralized cooling distribution unit (CDU), which comprises a cabinet body and a shunting pipe, the shunting pipe is positioned outside the cabinet body and is provided with a plurality of shunting interfaces, the centralized CDU further comprises a plurality of auxiliary liquid pumps and a plurality of flow sensors, the plurality of auxiliary liquid pumps are in one-to-one correspondence with the plurality of flow sensors, the plurality of auxiliary liquid pumps are in one-to-one correspondence with the plurality of shunting interfaces, and the plurality of auxiliary liquid pumps are in one-to-one correspondence with the plurality of shunting interfaces. Liquid inlets of the auxiliary liquid pumps are communicated with the corresponding shunting interfaces, liquid outlets of the auxiliary liquid pumps are communicated with liquid inlets of the corresponding flow sensors, liquid outlets of the flow sensors are used for being connected with a liquid cooling cabinet, and the multiple flow sensors and the multiple auxiliary liquid pumps are electrically connected with external control equipment. According to the technical scheme, the auxiliary liquid pump and the flow sensor are arranged for each shunting interface, the transmission power of the centralized CDU to the low-temperature liquid cooling working medium is improved, when the branch flow is insufficient, the branch flow can be adjusted in time through the auxiliary liquid pump, and the flexibility and timeliness of flow regulation and control are improved.

Description

Technical Field

[0001] This utility model relates to the field of liquid cooling technology, specifically to a centralized cooling distribution unit (CDU).

[0002] Power distribution control box Background Technology

[0003] With the expansion of data center and server applications, traditional air cooling technology can no longer meet the ever-increasing heat dissipation demands. Therefore, liquid cooling technology has emerged as an effective means to solve the heat dissipation problem of high-density heat-generating equipment. A typical liquid cooling system mainly includes liquid-cooled servers, a liquid-cooled manifold system, liquid-cooled secondary piping, and cooling distribution units (CDUs). The main function of the CDU is to provide the power for liquid circulation and to perform heat exchange, transferring heat between the high-temperature working fluid in the liquid cooling system and the relatively low-temperature water in the surrounding environment.

[0004] There are two main types of Cooler Duty Units (CDUs). One type is a distributed CDU located within each rack, occupying significant vertical space and thus reducing the number of server nodes that can be deployed within the rack. The other type is a centralized CDU housed in a separate rack within the data center. Typically, one centralized CDU can connect to multiple racks, with both the server nodes and the Manifold located within the rack. The secondary piping for the Manifold includes two branches: a supply branch and a return branch. In this configuration, the centralized CDU does not require rack space, but it necessitates a more complex secondary piping system and a sophisticated flow control strategy to ensure that each rack receives sufficient flow from the CDU. For example, if a sudden surge in computing load causes a localized increase in heat flux, a specially designed flow control strategy is needed to regulate the secondary piping within the corresponding rack to obtain sufficient coolant flow from the CDU. Utility Model Content

[0005] This invention aims to address one of the technical problems in related technologies to a certain extent. To this end, this invention provides a centralized cooling distribution unit (CDU) to improve the liquid distribution performance of the centralized CDU and simplify the on-site deployment of the liquid cooling system.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A centralized cooling distribution unit (CDU) includes a cabinet and a distribution pipe. The distribution pipe is used to output cryogenic liquid coolant and has multiple distribution interfaces, each corresponding to a different liquid cooling cabinet, to deliver cryogenic liquid coolant to the cabinet. The distribution pipe is located outside the cabinet. The centralized CDU also includes multiple auxiliary pumps and multiple flow sensors, with each auxiliary pump corresponding to a different distribution interface. The inlet of the auxiliary pump is connected to the corresponding distribution interface, and the outlet of the auxiliary pump is connected to the inlet of the corresponding flow sensor, so that the outlet of the flow sensor can be used to connect to the corresponding liquid cooling cabinet. The multiple flow sensors are electrically connected to an external control device to send the flow data they monitor to the external control device. The multiple auxiliary pumps are also electrically connected to the external control device to adjust the flow rate of the cryogenic liquid coolant output from their outlets. An auxiliary liquid pump and flow sensor are set up for each branch interface to improve the transmission power of the centralized CDU to the cryogenic liquid cooling working fluid. When the branch flow is insufficient, the branch flow can be adjusted in time by the auxiliary liquid pump, thereby improving the flexibility and timeliness of flow control.

[0008] Optionally, the distribution pipe includes interconnected main and branch pipes, which are located on the same plane to form a branching distribution pipe. Multiple branch interfaces are located on the branch pipes, and the main pipe is connected to the cryogenic liquid cooling fluid pipeline inside the cabinet. By segmenting the distribution pipe, the ease of on-site pipeline deployment is improved, and by placing the main and branch pipes on the same plane, the flow of the liquid cooling fluid is facilitated, saving transmission power.

[0009] Optionally, the centralized CDU also includes a manifold located outside the cabinet. The manifold includes a main manifold and branch manifolds that are interconnected. Multiple manifold interfaces are provided on the branch manifolds, each corresponding to a different liquid-cooled cabinet, to receive high-temperature liquid cooling fluid supplied by the cabinets. The main manifold is connected to the high-temperature liquid cooling fluid pipeline inside the cabinet to collect the high-temperature liquid cooling fluid supplied by the branch manifolds and transmit it to the high-temperature liquid cooling fluid pipeline. The manifold enables the centralized CDU to connect with the high-temperature liquid cooling pipelines of multiple different liquid-cooled cabinets.

[0010] Optionally, the distributor pipe and the manifold pipe do not contact each other, and the outer walls of both the distributor pipe and the manifold pipe are wrapped with thermal insulation cotton. The thermal insulation cotton prevents temperature loss of the liquid working medium inside the pipe and also prevents condensation on the outer wall of the pipe.

[0011] Optionally, the branch main and the collection main are located at the bottom side of the centralized CDU. By placing the branch main and the collection main at the bottom side of the centralized CDU, it is convenient to carry out on-site deployment of pipelines.

[0012] Optionally, the centralized CDU also includes a heat exchanger and a main liquid pump housed inside the cabinet. The heat exchanger has a high-temperature liquid-cooled working fluid interface and a low-temperature liquid-cooled working fluid interface. The high-temperature liquid-cooled working fluid interface is connected to the outlet of the main liquid pump, and the inlet of the main liquid pump is connected to the manifold main pipe. The main liquid pump inputs the high-temperature liquid-cooled working fluid collected in the manifold main pipe into the heat exchanger. The low-temperature liquid-cooled working fluid interface is connected to the branch pipe. The heat exchanger is used to cool the high-temperature liquid-cooled working fluid into a low-temperature liquid-cooled working fluid and input the low-temperature liquid-cooled working fluid into the branch pipe. The heat exchanger cools the high-temperature liquid-cooled working fluid into a low-temperature liquid-cooled working fluid, and the main liquid pump provides the power for the transmission of the high-temperature liquid-cooled working fluid.

[0013] Optionally, the outlet of the main liquid pump is located below the high-temperature liquid cooling medium interface of the heat exchanger, and the pipeline between the outlet of the main liquid pump and the high-temperature liquid cooling medium interface of the heat exchanger includes vertical pipeline nodes. By limiting the positional relationship between the outlet of the main liquid pump and the high-temperature liquid cooling medium interface of the heat exchanger and the pipeline distribution method, the transmission efficiency of the high-temperature liquid cooling medium is improved and heat loss is avoided.

[0014] Optionally, a pressure sensor is installed at the outlet of the main liquid pump, and temperature sensors are installed at the high-temperature and low-temperature liquid cooling medium interfaces of the heat exchanger. A Y-type filter is installed at the inlet of the high-temperature liquid cooling medium pipeline. The pressure and temperature sensors are electrically connected to external control equipment. By setting temperature and pressure sensors to monitor the temperature and pressure of the liquid cooling medium in real time, and cooperating with the control equipment to perform high-precision temperature regulation of the liquid cooling medium, and by setting Y-type filters to protect the main liquid pump from impurities, the performance and service life of the main liquid pump are improved.

[0015] Optionally, the inlet of the main liquid pump and the manifold main pipe are located on adjacent sides of the cabinet. The pipeline between the manifold main pipe and the inlet of the main liquid pump includes a bend that extends beyond the side of the cabinet. By providing a bend that extends beyond the side of the cabinet, the cabinet size is reduced, facilitating miniaturization.

[0016] Optionally, the centralized CDU also includes a cold source inlet and a cold source outlet. The heat exchanger also has a high-temperature cold source working fluid interface and a low-temperature cold source working fluid interface. The cold source inlet is connected to the low-temperature cold source working fluid interface, and the cold source outlet is connected to the high-temperature cold source working fluid interface. The cold source inlet and outlet extend out of the top surface of the cabinet. By setting the cold source inlet and outlet to connect with the corresponding interfaces of the heat exchanger, the liquid cooling working fluid is cooled by an outdoor cold source. Setting the cold source inlet and outlet to extend out of the top surface of the cabinet further reduces the cabinet size and facilitates on-site deployment with outdoor cold source piping.

[0017] These features and advantages of this utility model will be disclosed in detail in the following specific embodiments and accompanying drawings. The preferred embodiments or means of this utility model will be shown in detail in conjunction with the accompanying drawings, but are not intended to limit the technical solutions of this utility model. In addition, each of these features, elements and components appearing in the following text and drawings is multiple and is labeled with different symbols or numbers for convenience, but all represent parts with the same or similar structure or function. Attached Figure Description

[0018] The present invention will be further described below with reference to the accompanying drawings:

[0019] Figure 1 A three-dimensional structural diagram of a centralized cooling distribution unit (CDU) provided for an embodiment of this utility model;

[0020] Figure 2 A schematic diagram of a diversion tube provided for an embodiment of this utility model;

[0021] Figure 3 A three-dimensional structural diagram of a centralized CDU cabinet provided for an embodiment of this utility model.

[0022] Figure 4 A front view of a centralized CDU cabinet provided for an embodiment of this utility model;

[0023] Figure 5 A side view of a centralized CDU cabinet provided for an embodiment of this utility model;

[0024] Figure 6 A top view of a centralized CDU cabinet provided in an embodiment of this utility model;

[0025] Among them, 100-cabinet, 110-first layer partition, 120-second layer partition, 131-enclosure panel, 132-back panel, 200-heat exchanger, 300-main liquid pump, 400-diverter pipe, 410-diverter main pipe, 420-diverter branch pipe, 430-diverter interface, 510-liquid outlet, 520-liquid inlet, 610-pressure sensor, 620-temperature sensor, 630-Y-type filter, 710-cold source inlet, 720-cold source outlet, 800-auxiliary liquid pump, 900-flow sensor. Detailed Implementation

[0026] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described are intended to explain this utility model and should not be construed as limiting it.

[0027] The terms "an embodiment," "example," or "trademark" used in this specification refer to a particular feature, structure, or characteristic described in connection with the embodiment itself that may be included in at least one embodiment disclosed in this utility model. The phrase "in an embodiment" appearing in various places throughout the specification does not necessarily refer to the same embodiment.

[0028] Example:

[0029] This utility model embodiment provides a centralized cooling distribution unit (CDU). For example... Figure 1 and Figure 2 As shown, the centralized cooling distribution unit (CDU) includes a cabinet 100 and a distribution pipe 400. The distribution pipe 400 is used to output cryogenic liquid cooling medium. The distribution pipe 400 has multiple distribution interfaces 430, which correspond to multiple different liquid cooling cabinets to deliver cryogenic liquid cooling medium to the multiple different liquid cooling cabinets. That is, the distribution interface 430 corresponds one-to-one with the liquid cooling cabinet. Each distribution interface 430 delivers cryogenic liquid cooling medium to the corresponding liquid cooling cabinet through a dedicated pipe.

[0030] In some embodiments, the cabinet 100 is a cuboid structure, and the frame of the cuboid structure is formed by one or more profiles selected from square tubes, angle steel, and channel steel to give the cabinet 100 good mechanical and physical properties, such as high strength. In practical applications, the cabinet 100 can also be other three-dimensional structures. In practical applications, the various sides of the frame body 100 can also be provided with corresponding side panels as needed.

[0031] The centralized CDU connects multiple liquid-cooled cabinets, each of which has low-temperature liquid-cooled piping and high-temperature liquid-cooled piping. The centralized CDU connects the low-temperature liquid-cooled piping of multiple different liquid-cooled cabinets through a shunt pipe 400.

[0032] In related technologies, a pressure pump is usually installed inside the cabinet of a centralized CDU. The pressure pump inside the CDU cabinet and the secondary side piping system inside the liquid-cooled cabinet are used, along with a complex flow control strategy, to achieve flow control for each liquid-cooled cabinet.

[0033] Unlike related technologies, in this embodiment, multiple diversion interfaces are located outside the cabinet 100. The centralized CDU also includes multiple auxiliary liquid pumps 800 and multiple flow sensors 900. The multiple auxiliary liquid pumps 800 and multiple flow sensors 900 correspond one-to-one, and the multiple auxiliary liquid pumps 800 correspond one-to-one with multiple diversion interfaces 430. The inlet of the auxiliary liquid pump 800 is connected to the corresponding diversion interface 430, the outlet of the auxiliary liquid pump 800 is connected to the inlet of the corresponding flow sensor 900, and the outlet of the flow sensor 900 is connected to the corresponding liquid cooling cabinet, so as to monitor the flow rate of the cryogenic liquid cooling working fluid output from the outlet of the auxiliary liquid pump 800 through the flow sensor 900. The multiple flow sensors 900 are electrically connected to external control equipment to send the flow data they monitor to the external control equipment. The multiple auxiliary liquid pumps 800 are electrically connected to the external control equipment to adjust the flow rate of the cryogenic liquid cooling working fluid output from their outlets through the external control equipment.

[0034] The auxiliary liquid pump 800 can be a miniature pump, such as a shaftless linear pump, for easy deployment on each of the distribution interfaces 430. During deployment, the inlet of the auxiliary liquid pump 800 is connected to the distribution interface via a flange, and the inlet of the flow sensor 900 is connected to the outlet of the auxiliary liquid pump 800 via a thread. The flow sensor 900 monitors the flow rate of the cryogenic liquid coolant output from its respective distribution interface 430. The flow sensor 900 is electrically connected to the control equipment of the data center to send the monitored flow data to the control equipment. The control equipment adjusts the corresponding auxiliary liquid pump 800 according to the flow rate of the cryogenic liquid coolant output from the distribution interface 430 to ensure that the output flow rate of the corresponding distribution interface 430 meets the requirements of the liquid-cooled cabinet.

[0035] Therefore, in this embodiment, by setting an auxiliary liquid pump 800 and a flow sensor 900 at each branch port 430 of the branch pipe 400, the auxiliary liquid pump 800 is used to improve the transmission power of the centralized CDU to the cryogenic liquid cooling working fluid, avoiding flow limitation caused by insufficient power. Furthermore, the flow sensor is used to monitor the real-time flow of each branch. When the branch flow is insufficient, the branch flow can be adjusted in time by the auxiliary liquid pump 800, thereby improving the flexibility and timeliness of flow control.

[0036] In some embodiments, the diversion pipe 400 includes a main diversion pipe 410 and branch diversion pipes 420 that are interconnected. The main diversion pipe 410 and branch diversion pipes 420 are on the same plane to form a branched diversion pipe 400. Multiple diversion interfaces 430 are provided on the branch diversion pipes 420. The main diversion pipe 410 is connected to the cryogenic liquid cooling working fluid pipeline inside the cabinet 100, such as... Figure 3 As shown, the main branch pipe 410 is specifically connected to the outlet 510 of the low-temperature liquid cooling working fluid pipeline inside the cabinet 100.

[0037] exist Figure 2In the scenario shown, the main branch pipe 410 and branch pipe 420 form a T-shaped pipeline, with multiple branch interfaces 430 distributed on the branch pipe 420. These multiple branch interfaces 430 can be evenly or unequally spaced, and their orientation can be the same or different. When the centralized CDU is installed in the middle of the liquid-cooled cabinet group, the T-shaped branch pipe 400 can connect to the liquid-cooled cabinet group through a shorter transmission pipeline, avoiding heat loss of the cryogenic liquid coolant. Obviously, when the centralized CDU is installed at one end of the liquid-cooled cabinet group, the main branch pipe 410 and branch pipe 420 can form an L-shaped pipeline. That is, the branching structure formed by the main branch pipe 410 and branch pipe 420 can be configured according to the positional relationship between the centralized CDU and the liquid-cooled cabinet group to shorten the transmission pipeline length and avoid heat loss of the cryogenic liquid coolant. Furthermore, by setting the main branch pipe 410 and the branch pipe 420 to be on the same plane, it facilitates the flow of liquid cooling working fluid and saves transmission power.

[0038] As mentioned above, the centralized CDU connects multiple different liquid-cooled cabinets, each of which has low-temperature liquid-cooled piping and high-temperature liquid-cooled piping. The centralized CDU connects to the high-temperature liquid-cooled piping of multiple different liquid-cooled cabinets through manifold 400.

[0039] Accordingly, the centralized CDU in this embodiment also includes a manifold (not shown in the figure) disposed outside the cabinet 100. The manifold is used to collect high-temperature liquid cooling media from multiple different liquid-cooled cabinets. The manifold has multiple collection interfaces, each corresponding to a different liquid-cooled cabinet, to receive the high-temperature liquid cooling media supplied by the different liquid-cooled cabinets. That is, each collection interface corresponds one-to-one with a liquid-cooled cabinet, and each collection interface receives the high-temperature liquid cooling media supplied by the corresponding liquid-cooled cabinet through a dedicated pipe.

[0040] It is worth noting that the shape of the manifold in this embodiment can refer to the branch pipe 400. For example, the manifold also includes interconnected main manifold and branch manifolds, with multiple manifold interfaces set on the branch manifolds. The main manifold is connected to the high-temperature liquid cooling fluid pipeline inside the cabinet 100, such as... Figure 3 As shown, the main manifold is specifically connected to the inlet 520 of the high-temperature liquid cooling working fluid pipeline inside the cabinet 100, so as to collect the high-temperature liquid cooling working fluid transported by multiple manifold branches and transmit it to the high-temperature liquid cooling working fluid pipeline inside the cabinet 100.

[0041] In practical applications, the manifold and the branch pipe 400 can use the same type of piping. The difference between the two is that the manifold does not need to be equipped with an auxiliary liquid pump 800 and a flow sensor 900 at the manifold interface.

[0042] In some embodiments, the distributor 400 does not contact the collector, and both the distributor 400 and the collector are wrapped with insulating cotton. The insulating cotton prevents temperature loss of the liquid working medium inside the pipe and also prevents condensation on the outside of the pipe wall.

[0043] In some embodiments, the main distribution pipe 410 and the main collection pipe are located at the bottom side of the centralized CDU. By placing the main distribution pipe 410 and the main collection pipe at the bottom side of the centralized CDU, it is convenient to deploy piping between the centralized CDU and the liquid-cooled cabinet group.

[0044] refer to Figure 1 and Figure 3 During the pipeline deployment process, one end of the diversion conduit 410 can be connected to the liquid outlet 510 inside the cabinet 100. Then, the other end of the diversion conduit 410 can be connected to the diversion branch pipe 420 through the connector. Then, the diversion interface of the diversion branch pipe 420 can be connected to the auxiliary liquid pump 800 and the flow sensor 900 in sequence. Finally, the liquid outlet of the flow sensor 900 can be connected to the low-temperature liquid cooling pipeline of the corresponding liquid cooling cabinet.

[0045] In some embodiments, the centralized CDU also includes a heat exchanger 200 and a main liquid pump 300 disposed inside the cabinet 100;

[0046] The heat exchanger 200 has a high-temperature liquid-cooled working fluid interface and a low-temperature liquid-cooled working fluid interface. The high-temperature liquid-cooled working fluid interface is connected to the outlet of the main liquid pump 300. The inlet of the main liquid pump 300 is connected to the inlet 520 and then to the main manifold. The high-temperature liquid-cooled working fluid collected in the main manifold is input to the heat exchanger 200 through the main liquid pump 300. The low-temperature liquid-cooled working fluid interface is connected to the outlet 510 to form a low-temperature liquid-cooled working fluid pipeline. The outlet 510 is connected to the main branch pipe 410. The heat exchanger 200 is used to cool the high-temperature liquid-cooled working fluid into a low-temperature liquid-cooled working fluid and input the low-temperature liquid-cooled working fluid into the branch pipe 400.

[0047] In this embodiment, the heat exchanger 200 can be a plate heat exchanger, and the main liquid pump 300 can be a pressure pump.

[0048] In some embodiments, the outlet of the main liquid pump 300 is located below the high-temperature liquid cooling medium interface of the heat exchanger 200, and the pipeline between the outlet of the main liquid pump 300 and the high-temperature liquid cooling medium interface of the heat exchanger 200 includes a vertical pipeline.

[0049] like Figure 4As shown, the heat exchanger 200 is positioned above the main liquid pump 300, with the outlet of the main liquid pump 300 located below the high-temperature liquid cooling medium interface of the heat exchanger 200. The transmission pipeline between the two is generally vertically distributed, ensuring that the high-temperature liquid cooling medium flowing from the main liquid pump 300 to the heat exchanger 200 completely fills the transmission pipeline under the resistance of gravity, avoiding the presence of cavities in the liquid working medium within the transmission pipeline. This allows the heat of the high-temperature liquid cooling medium to be exchanged as much as possible within the heat exchanger 200.

[0050] In some embodiments, the inlet of the main liquid pump 300 and the manifold main pipe are located on adjacent sides of the cabinet 100, and the pipeline between the manifold main pipe and the inlet of the main liquid pump 300 includes a bend, the bend extending out of the side of the cabinet 100.

[0051] Continue to refer to Figure 4 The main manifold is located on the front side of the cabinet 100, and the inlet of the main liquid pump 300 is located on the right side of the cabinet 100. The transmission pipeline between the two has a bend. By allowing the bend to extend out of the right side of the cabinet 100, the volume of the cabinet 100 is reduced, thereby achieving miniaturization of the centralized CDU.

[0052] In some embodiments, the centralized CDU further includes a cold source inlet 710 and a cold source outlet 720. The heat exchanger 200 also has a high-temperature cold source working fluid interface and a low-temperature cold source working fluid interface. The cold source inlet 710 is connected to the low-temperature cold source working fluid interface, and the cold source outlet 720 is connected to the high-temperature cold source working fluid interface. The cold source inlet 710 and the cold source outlet 720 extend out of the top surface of the cabinet 100 for connection to outdoor cold source pipelines. The heat exchanger 200 uses the cooling working fluid provided by the outdoor cold source to cool the liquid cooling working fluid of the liquid-cooled cabinet, achieving the purpose of cooling and temperature reduction.

[0053] like Figure 3 As shown, the cold source inlet 710 and cold source outlet 720 are located at the top of the cabinet 100, reducing the space occupied by the piping within the cabinet 100, facilitating the miniaturization of the centralized CDU, and allowing the cold source inlet 710 and cold source outlet 720 to extend beyond the top surface, making connection to the cold source piping easier. In practical applications, the cold source inlet 710 and cold source outlet 720 can be configured as copy forest interfaces.

[0054] like Figure 3 and Figure 4As shown, a first layer of partition member 120 and a second layer of partition member 130 are provided inside the cabinet body 100. The first layer of partition member 120 is located above the second layer of partition member 130. The first layer of partition member 120 and the second layer of partition member 130 can be beam structures that span across the columns on opposite sides of the cabinet body 100. In practical applications, reinforcing ribs can also be provided between the beam structures of the first layer of partition member 120 and the second layer of partition member 130 to improve the bearing capacity and stability of the first layer of partition member 120 and the second layer of partition member 130.

[0055] The heat exchanger 200 is provided on the left side of the first layer of partition member 120. Combining Figure 3 and Figure 5 As shown, to ensure the installation stability of the heat exchanger 200 and prevent it from being affected by the vibration of the main liquid pump 300, the heat exchanger 200 is fixedly installed on the left side surface of the cabinet body 100 through the surrounding plate 131 and the back plate 132. The surrounding plate 131 is composed of a front side panel and fixed wing plates extending backward on both sides, forming a geometric shape similar to a "C" with an opening facing backward. The back plate 132 is provided at the opening of the surrounding plate 131. The back plate 132 and the surrounding plate 131 form a box body with upper and lower openings. The heat exchanger 200 is sleeved inside the box body, and the bottom is provided on the first layer of partition member 120.

[0056] Correspondingly, the four interfaces of the heat exchanger 200 are provided on the end face of the heat exchanger 200 facing the right side of the cabinet body 100 to facilitate pipeline connection with other components in the right side space of the cabinet body; the main liquid pump 300 is provided at the middle position on the second layer of partition member 130. The liquid outlet of the main liquid pump 300 faces the top of the cabinet body 100, and the liquid inlet of the main liquid pump 300 faces the right side of the cabinet body 100. The liquid outlet 510 of the low-temperature liquid cooling working medium pipeline and the liquid inlet 520 of the high-temperature liquid cooling working medium pipeline are provided at the bottom of the cabinet body 100. The liquid outlet 510 and the liquid inlet 520 are offset from each other to facilitate the connection of the liquid outlet 510 with the shunt pipe 400 and the connection of the liquid inlet 520 with the manifold. In practical applications, the liquid outlet 510 and the liquid inlet 520 can be set as Copyrigh interfaces.

[0057] In some embodiments, as Figure 4 and Figure 6 shown, a pressure sensor 610 is provided at the liquid outlet of the main liquid pump 300. Temperature sensors 620 are respectively provided at the high-temperature liquid cooling working medium interface and the low-temperature liquid cooling working medium interface of the heat exchanger 200. The temperature sensors 620 and the pressure sensor 610 are electrically connected to the control device of the data center. The temperature and pressure of the liquid cooling working medium are monitored in real time by using the temperature sensors 620 and the pressure sensor 610, and the monitored data is sent to the control device of the data center. A Y-type filter 630 is provided at the liquid inlet 520 of the high-temperature liquid cooling working medium pipeline. The impurities in the high-temperature liquid cooling working medium are filtered by using the Y-type filter 630 to protect the main liquid pump 300 from being affected by impurities.

[0058] Data centers typically use power control cabinets. In this embodiment, the control module of the centralized CDU is integrated into the power control cabinet to reduce the number of components inside the centralized CDU, thereby further reducing the size of the centralized CDU and facilitating miniaturization.

[0059] In some embodiments, the cabinet dimensions of the centralized CDU can be set to 1100mm*550mm*2000mm.

[0060] The above are merely specific embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Those skilled in the art should understand that this utility model includes, but is not limited to, the contents described in the accompanying drawings and the specific embodiments above. Any modifications that do not depart from the functional and structural principles of this utility model will be included within the scope of the claims.

Claims

1. A centralized cooling distribution unit (CDU), comprising a cabinet (100) and a distribution pipe (400), the distribution pipe (400) being used to output cryogenic liquid cooling fluid, the distribution pipe (400) having multiple distribution ports (430), the multiple distribution ports (430) respectively corresponding to multiple different liquid cooling cabinets, for respectively supplying cryogenic liquid cooling fluid to the multiple liquid cooling cabinets, characterized in that, The diversion pipe (400) is located outside the cabinet. The centralized CDU also includes multiple auxiliary liquid pumps (800) and multiple flow sensors (900). The multiple auxiliary liquid pumps (800) and multiple flow sensors (900) correspond one-to-one, and the multiple auxiliary liquid pumps (800) correspond one-to-one with the multiple diversion interfaces (430). The inlet of the auxiliary liquid pump (800) is connected to the corresponding diversion interface (430), the outlet of the auxiliary liquid pump (800) is connected to the inlet of the corresponding flow sensor (900), and the outlet of the flow sensor (900) is connected to the corresponding liquid cooling cabinet. The multiple flow sensors (900) are electrically connected to external control equipment to send the flow data they monitor to the external control equipment. The multiple auxiliary liquid pumps (800) are electrically connected to the external control equipment to adjust the flow rate of the cryogenic liquid cooling working fluid output from their outlets through the external control equipment.

2. Centralized cooling distribution unit CDU according to claim 1, characterized in that The diversion pipe (400) includes a diversion main pipe (410) and a diversion branch pipe (420) that are interconnected. The diversion main pipe (410) and the diversion branch pipe (420) are on the same plane to form a bifurcated diversion pipe (400). Multiple diversion interfaces (430) are provided on the diversion branch pipe (420). The diversion main pipe (410) is connected to the cryogenic liquid cooling working fluid pipeline inside the cabinet (100).

3. The centralized cooling distribution unit (CDU) of claim 1, wherein, The centralized CDU also includes a manifold located outside the cabinet (100). The manifold includes a main manifold and a branch manifold that are interconnected. The branch manifold is provided with multiple manifold interfaces, which correspond to multiple different liquid cooling cabinets to receive high-temperature liquid cooling fluids delivered by the multiple liquid cooling cabinets. The main manifold is connected to the high-temperature liquid cooling fluid pipeline inside the cabinet (100) to collect the high-temperature liquid cooling fluids delivered by the multiple branch manifolds and transmit them to the high-temperature liquid cooling fluid pipeline.

4. The centralized cooling distribution unit (CDU) according to claim 3, characterized in that, The shunt pipe (400) and the manifold do not contact each other, and the outer walls of both the shunt pipe (400) and the manifold are wrapped with insulation cotton.

5. The centralized cooling distribution unit (CDU) of claim 3, wherein, The branch main (410) and the collection main are located at the bottom of the side of the centralized CDU.

6. The centralized cooling distribution unit (CDU) of claim 3, wherein, The centralized CDU also includes a heat exchanger (200) and a main liquid pump (300) installed inside the cabinet (100); The heat exchanger (200) has a high-temperature liquid-cooled working medium interface and a low-temperature liquid-cooled working medium interface. The high-temperature liquid-cooled working medium interface is connected to the outlet of the main liquid pump (300), and the inlet of the main liquid pump (300) is connected to the main manifold. The high-temperature liquid-cooled working medium collected in the main manifold is input to the heat exchanger (200) through the main liquid pump (300). The low-temperature liquid-cooled working medium interface is connected to the branch pipe (410). The heat exchanger (200) is used to cool the high-temperature liquid-cooled working medium into a low-temperature liquid-cooled working medium and input the low-temperature liquid-cooled working medium into the branch pipe (400).

7. The centralized cooling distribution unit (CDU) of claim 6, wherein, The outlet of the main liquid pump (300) is located below the high-temperature liquid cooling medium interface of the heat exchanger (200), and the pipeline between the outlet of the main liquid pump (300) and the high-temperature liquid cooling medium interface of the heat exchanger (200) includes vertical pipeline nodes.

8. The centralized cooling distribution unit (CDU) of claim 6, wherein, A pressure sensor (610) is installed at the outlet of the main liquid pump (300), and temperature sensors (620) are installed at the high-temperature liquid cooling medium interface and the low-temperature liquid cooling medium interface of the heat exchanger (200). A Y-type filter (630) is installed at the inlet (520) of the high-temperature liquid cooling medium pipeline. The pressure sensor (610) and the temperature sensor (620) are electrically connected to the external control equipment.

9. The centralized cooling distribution unit (CDU) of claim 6, wherein, The inlet of the main liquid pump (300) and the main manifold are located on adjacent sides of the cabinet (100). The pipeline between the main manifold and the inlet of the main liquid pump (300) includes a bend, which extends out of the side of the cabinet (100).

10. The centralized cooling distribution unit (CDU) of claim 6, wherein, The centralized CDU also includes a cold source inlet (710) and a cold source outlet (720). The heat exchanger (200) also has a high-temperature cold source working medium interface and a low-temperature cold source working medium interface. The cold source inlet (710) is connected to the low-temperature cold source working medium interface, and the cold source outlet (720) is connected to the high-temperature cold source working medium interface. The cold source inlet (710) and the cold source outlet (720) extend out of the top surface of the cabinet (100).

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