Liquid cooling distribution device and cabinet heat exchange device

Abstract

The present invention provides a liquid cooling distribution device and a cabinet heat exchange device. The liquid cooling distribution device includes: a heat exchanger, a first pump, a second pump, a secondary side liquid inlet, a secondary side liquid outlet, a primary side liquid inlet, a primary side liquid outlet, and a three-way regulating valve. The secondary side liquid inlet is connected to one end of the first pump, the other end of the first pump is connected to one end of a first heat exchange pipe segment, the other end of the first heat exchange pipe segment is connected to the secondary side liquid outlet, a fourth pipeline connects one end of the second pump to the first pipeline, and a fifth pipeline connects the other end of the second pump to the second pipeline; the primary side liquid inlet is connected to one end of the second heat exchange pipe segment, the other end of the second heat exchange pipe segment is connected to the primary side liquid outlet; only one of the first pump and the second pump is turned on, while the other is in standby mode. According to the present invention, the problem that the water pump of the CDU in the prior art cannot be repaired or replaced without shutting down the CDU can be solved.

Description

Technical Field

[0001] The present invention relates to the technical field of liquid cooling distribution units, and in particular to a liquid cooling distribution device and a cabinet heat exchange device. Background Art

[0002] With the rapid growth in demand for artificial intelligence and high-performance computing, the power density of single cabinets in data centers is getting higher and higher. Traditional air cooling will not be able to meet the cooling needs of server chips, and liquid cooling will become an inevitable trend for cooling high-performance servers.

[0003] Cooling Distribution Units (CDUs) are systems that enable smaller, more efficient, and more accurate liquid cooling in rack-level data centers, typically integrating facility water. CDUs circulate coolant in a closed-loop system within the rack on the secondary (cooling application) side and utilize facility water on the primary (heat dissipation) side. CDUs have pumps, tanks, power supplies, control boards, and heat exchangers as key components. Other equipment such as filters, flow meters, pressure sensors, and valves are also used to manage the operation of the CDUs in conjunction with the server racks. When integrated into the server cabinet, the coolant is distributed to a series of servers or heat sources. The CDU can manage the performance of the liquid cooling system, eliminating the noise of air cooling in the data center, while energy-efficient data centers can obtain the precise, optimal cooling performance required by the system.

[0004] Since the water pump of the CDU in the prior art cannot be repaired or replaced without shutting down the CDU and cannot accurately and quickly control the flow rate, damage will cause the system to not operate normally and have low reliability and other technical problems. Therefore, the present invention studies and designs a liquid cooling distribution device and a cabinet heat exchange device. Summary of the Invention

[0005] Therefore, the technical problem to be solved by the present invention is to overcome the defects in the prior art that the water pump of the CDU cannot be repaired or replaced without shutting down the CDU and that the flow rate cannot be accurately and quickly controlled, thereby providing a liquid cooling distribution device and a cabinet heat exchange device.

[0006] In order to solve the above problems, the present invention provides a liquid cooling distribution device, which includes:

[0007] A heat exchanger, a first pump, a second pump, a secondary liquid inlet, a secondary liquid outlet, a primary liquid inlet, a primary liquid outlet, and a three-way regulating valve. The heat exchanger has a first heat exchange pipe section and a second heat exchange pipe section. The three-way regulating valve has a first end, a second end, and a third end. The three-way regulating valve has three states and can be switched between the three states: a first state: the first end is connected to the second end and the third end is disconnected; a second state: the first end is connected to the third end and the second end is disconnected; a third state: the first end is connected to both the second end and the third end.

[0008] The secondary side liquid inlet can be communicated with the first end of the three-way regulating valve, one end of the first pump can be communicated with the second end of the three-way regulating valve, one end of the second pump can be communicated with the third end of the three-way regulating valve, the other end of the first pump and the other end of the second pump can both be communicated with one end of the first heat exchange pipe segment, and the other end of the first heat exchange pipe segment can be communicated with the secondary side liquid outlet;

[0009] The primary side liquid inlet can be connected to one end of the second heat exchange pipe segment, and the other end of the second heat exchange pipe segment can be connected to the primary side liquid outlet;

[0010] The first heat exchange pipe section and the second heat exchange pipe section exchange heat, and only one of the first pump and the second pump is turned on, while the other is in a standby state; when the first pump needs maintenance, the first end of the three-way regulating valve is connected to the third end, and the second end is blocked, so that the first pump is not connected and the second pump is connected; when the second pump needs maintenance, the first end of the three-way regulating valve is connected to the second end, and the third end is blocked, so that the second pump is not connected and the first pump is connected;

[0011] It also includes a proportional regulating valve, which can adjust the flow rate of the heat exchange fluid entering the first heat exchange pipe section and / or the second heat exchange pipe section according to the load of the liquid cooling distribution device.

[0012] In some embodiments,

[0013] The heat exchanger further comprises a first pipeline, a second pipeline, a third pipeline, a fourth pipeline, a fifth pipeline, a sixth pipeline, a seventh pipeline and an eighth pipeline, one end of the first pipeline is connected to the first end of the three-way regulating valve, one end of the second pipeline is connected to the second end of the three-way regulating valve, the other end of the second pipeline is connected to one end of the first pump, the other end of the first pump is connected to one end of the first heat exchange pipe section through the third pipeline, the other end of the first heat exchange pipe section is connected to the secondary side liquid outlet through the fourth pipeline, the fifth pipeline connects one end of the second pump to the third end of the three-way regulating valve, and the sixth pipeline connects the other end of the second pump to the third pipeline;

[0014] The primary side liquid inlet is connected to one end of the second heat exchange pipe segment through the seventh pipeline, and the other end of the second heat exchange pipe segment is connected to the primary side liquid outlet through the eighth pipeline;

[0015] The proportional regulating valve is arranged on the eighth pipeline and / or between the fourth pipeline and the first pipeline.

[0016] In some embodiments,

[0017] The system further includes a ninth pipeline and a tenth pipeline. The proportional regulating valve is a three-way proportional valve. The three-way proportional valve includes a fourth end, a fifth end, and a sixth end. The fifth end can be communicated with the fourth end and / or the sixth end. One end of the ninth pipeline is communicated with the secondary-side liquid inlet, and the other end of the ninth pipeline is communicated with the fourth end of the three-way regulating valve. The other end of the first pipeline is communicated with the fifth end of the three-way proportional valve. One end of the tenth pipeline is communicated with the sixth end of the three-way proportional valve, and the other end of the tenth pipeline is communicated with the fourth pipeline.

[0018] The three-way proportional valve can adjust the flow from the sixth end to the fifth end, and thereby adjust the flow of the fluid from the tenth pipeline to the first pipeline; when the load of the liquid cooling distribution device is less than a first preset load, the flow from the sixth end of the three-way proportional valve to the fifth end can be increased; when the load of the liquid cooling distribution device is greater than a second preset load, the flow from the sixth end of the three-way proportional valve to the fifth end can be reduced, wherein the first preset load is less than or equal to the second preset load.

[0019] In some embodiments,

[0020] The proportional control valve is a two-way proportional valve, which is arranged on the eighth pipeline. The other end of the first pipeline is connected to the secondary side liquid inlet. The two-way proportional valve can adjust the flow rate of the fluid flowing from the eighth pipeline to the primary side liquid outlet; when the load of the liquid cooling distribution device is less than a first preset load, the opening of the two-way proportional valve can be reduced, and when the load of the liquid cooling distribution device is greater than a second preset load, the opening of the two-way proportional valve can be increased, wherein the first preset load is less than or equal to the second preset load.

[0021] In some embodiments,

[0022] The device further comprises a fluid replenishing tank and a fluid replenishing pump, wherein the fluid replenishing tank can be connected to the first pipeline through an eleventh pipeline, and the fluid replenishing pump is arranged on the eleventh pipeline; the fluid replenishing tank is also respectively connected with a drain port and a fluid replenishing port;

[0023] It also includes an expansion tank and a twelfth pipeline, wherein the expansion tank is connected to the first pipeline through the twelfth pipeline;

[0024] It also includes a first one-way valve and a second one-way valve. The first one-way valve is arranged on the third pipeline to only allow fluid to flow from the first pump to the first heat exchange pipe section; the second one-way valve is arranged on the sixth pipeline to only allow fluid to flow from the second pump to the first heat exchange pipe section.

[0025] In some embodiments,

[0026] The heat exchanger, the first pump, and the second pump are all disposed inside the shell, and the secondary liquid inlet, the secondary liquid outlet, the primary liquid inlet, and the primary liquid outlet are disposed outside the shell;

[0027] The device also includes at least two fans, at least one of which is in operation and at least one is in standby mode.

[0028] In some embodiments,

[0029] It also includes an electrical box, which is located in the housing and has a controller installed inside.

[0030] The at least two fans include a first fan and a second fan disposed on one side of the electrical box, and a third fan and a fourth fan disposed on the other side of the electrical box.

[0031] The first fan and the third fan form a first fan group, the second fan and the fourth fan form a second fan group, the first fan group forms a first air path that drives the airflow, the second fan group forms a second air path that drives the airflow, and only one fan in the first fan group is turned on and the other is in standby mode, and only one fan in the second fan group is turned on and the other is in standby mode.

[0032] In some embodiments,

[0033] The housing includes a front panel and a rear panel that are arranged opposite to each other, a first grille and a second grille are provided on the front panel, and a third grille is provided on the rear panel, the first grille is arranged opposite to the first fan, and the second grille is arranged opposite to the second fan; the first grille and the second grille are air inlet grilles, and the third grille is an air outlet grille;

[0034] Parallel working mode: the first fan and the second fan are both running, while the third fan and the fourth fan are both in standby mode; or the third fan and the fourth fan are both running, while the first fan and the second fan are both in standby mode;

[0035] Cross-working mode: the first fan and the fourth fan are both running, while the second fan and the third fan are both in standby mode; or, the second fan and the third fan are both running, while the first fan and the fourth fan are both in standby mode.

[0036] In some embodiments,

[0037] The front panel is also provided with a display screen, a switch and a communication interface, and the first grid and the second grid are symmetrically arranged relative to the display screen;

[0038] The secondary liquid inlet, secondary liquid outlet, primary liquid inlet and primary liquid outlet are all arranged on the rear panel, the secondary liquid inlet and the secondary liquid outlet are symmetrically arranged relative to the third grille, and the primary liquid inlet and the primary liquid outlet are symmetrically arranged relative to the third grille.

[0039] The present invention also provides a cabinet heat exchange device, which includes the aforementioned liquid cooling distribution device.

[0040] The liquid cooling distribution device and cabinet heat exchange device provided by the present invention have the following beneficial effects:

[0041] 1. The present invention provides at least two pumps, each of which is connected to the heat exchange device, the secondary side liquid inlet and the secondary side liquid outlet respectively, and only one of the two pumps is turned on while the other is in standby state, thereby realizing a backup redundant design, so that when one of the pumps is damaged or fails, the other can continue to work, and can be repaired and replaced without shutting down the CDU, thereby improving the operating reliability of the liquid cooling distribution device and increasing the service life of the liquid cooling distribution device, solving the problem in the prior art that the water pump of the CDU has no redundancy and if damaged, it will cause the system to fail to operate normally and the system reliability is low; the present invention also uses the setting of a proportional control valve to adjust the size of the heat exchange fluid flow entering the first heat exchange pipe section and / or the second heat exchange pipe section according to the load of the liquid cooling distribution device, thereby realizing accurate and fast control of the flow to adapt to different loads, improving versatility, and reducing energy waste while meeting heat exchange requirements, thereby improving energy efficiency.

[0042] 2. The present invention also provides at least two fans, at least one of which is running and at least one is in standby mode, so that the fans also have a backup redundant design, so that when one or a group of fans is damaged or fails, the other one or a group can continue to work, thereby further improving the operational reliability of the liquid cooling distribution device and further improving the service life of the liquid cooling distribution device; the present invention also provides the first and second fans on one side of the electrical box and the third and fourth fans on the other side of the electrical box, so that fans are arranged on both sides of the electrical box, thereby improving the uniformity of airflow and improving the uniformity of heat exchange of the airflow to the electrical box and other components inside the shell; the first and second grilles of the present invention are symmetrically arranged relative to the display screen, and the first and second fans are respectively opposite to the first and second grilles, so that the two fans are also symmetrically arranged relative to the display screen, thereby improving the overall aesthetics of the liquid cooling distribution unit.

[0043] 3. The present invention also provides a proportional control valve, preferably a three-way proportional valve, disposed at the connection between the tenth pipeline, the ninth pipeline, and the first pipeline. This valve can adjust the flow rate of the heat exchange fluid entering the first heat exchange pipe section according to the load of the liquid cooling distribution device. In particular, when the load of the liquid cooling distribution device is less than a first preset load, the flow rate from the sixth end of the three-way proportional valve to the fifth end can be increased. When the load of the liquid cooling distribution device is greater than a second preset load, the flow rate from the sixth end of the three-way proportional valve to the fifth end can be decreased. This allows for fine flow control to adapt to different loads. Specifically, when the heat exchange load of the liquid cooling distribution device is low, a larger amount of fluid can be bypassed through the proportional valve and returned to the first pipeline, thereby reducing the flow rate of the heat exchange fluid and reducing energy waste. When the heat exchange load of the liquid cooling distribution device is high, a smaller amount of fluid can be bypassed through the proportional valve, thereby increasing the flow rate of the heat exchange fluid and the flow rate of the heat exchange fluid output to meet the heat exchange demand. This allows for fine flow control to adapt to different loads, improves versatility, and reduces energy waste while meeting the heat exchange demand, thereby improving energy efficiency.

[0044] 4. The present invention also adopts the setting of a proportional regulating valve, preferably a two-way proportional valve, which is set on the eighth pipeline. It can adjust the flow rate of the heat exchange fluid entering the second heat exchange pipe section according to the load of the liquid cooling distribution device, especially when the load of the liquid cooling distribution device is less than the first preset load, the opening of the two-way proportional valve is adjusted to decrease, and when the load of the liquid cooling distribution device is greater than the second preset load, the opening of the two-way proportional valve is adjusted to increase, thereby realizing fine control of the flow rate to adapt to different loads, that is, when the heat exchange load of the liquid cooling distribution device is small, the flow rate of the primary side heat exchange fluid can be reduced by reducing the opening of the two-way proportional valve, thereby ensuring the heat exchange capacity and reducing energy waste; and when the heat exchange load of the liquid cooling distribution device is large, the flow rate of the primary side heat exchange fluid can be increased by increasing the opening of the two-way proportional valve, thereby meeting the heat exchange demand; thereby realizing fine control of the flow rate to adapt to different loads, improving versatility, and reducing energy waste while meeting the heat exchange demand, thereby improving energy efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] Figure 1a This is a front perspective structural diagram of the liquid cooling distribution device of the present invention;

[0046] Figure 1b is a back perspective structural diagram of the liquid cooling distribution device of the present invention;

[0047] Figure 2 This is a system structure diagram of a first embodiment of a liquid cooling distribution device of the present invention;

[0048] Figure 3 This is a diagram of the internal structure of the liquid cooling distribution device of the present invention;

[0049] Figure 4 This is a system structure diagram of the second embodiment of the liquid cooling distribution device of the present invention.

[0050] The reference numerals indicate:

[0051] 10. Front panel; 11. Display screen; 12. Switch; 13. Communication interface; 14. First grille; 15. Second grille; 50. Third grille; 16. Handle; 20. Bottom shell; 30. Top cover; 40. Rear panel; 42. Drain port; 43. Refill port; 44. Power connector; 46. Secondary liquid inlet; 47. Primary liquid outlet; 48. Primary liquid inlet; 49. Secondary liquid outlet; 51. First fan; 52. Second fan; 53. Third fan; 54. Fourth fan; 55, electrical box; 56, controller; 60, rehydration tank; 70, rehydration pump; 71, first pump; 72, second pump; 80, expansion tank; 90, three-way proportional valve; d, fourth end; e, fifth end; f, sixth end; 91, first one-way valve; 92, second one-way valve; 93, three-way regulating valve; a, first end; b, second end; c, third end; 94, two-way proportional valve; 100, heat exchanger; 100a, first heat exchange pipe section; 100b, second heat exchange pipe section;

[0052] 101. First pipeline; 102. Second pipeline; 103. Third pipeline; 104. Fourth pipeline; 105. Fifth pipeline; 106. Sixth pipeline; 107. Seventh pipeline; 108. Eighth pipeline; 109. Ninth pipeline; 110. Tenth pipeline; 111. Eleventh pipeline; 112. Twelfth pipeline; 200. Shell. DETAILED DESCRIPTION

[0053] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, rather than all the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is in no way intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0054] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or combinations thereof.

[0055] Unless otherwise specifically stated, the relative arrangement of the parts and steps, the numerical expressions and the numerical values ​​set forth in these embodiments do not limit the scope of the present invention. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship. The techniques, methods and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the techniques, methods and equipment should be considered as part of the authorization specification. In all examples shown and discussed here, any specific values ​​should be interpreted as being merely exemplary and not as limiting. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following figures, and therefore, once an item is defined in one figure, it does not need to be further discussed in subsequent figures.

[0056] In the description of the present invention, it should be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "horizontal, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention; the directional words "inside and outside" refer to the inside and outside relative to the outline of each component itself.

[0057] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used herein to describe the spatial positional relationship of a device or feature to other devices or features as shown in the figures. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figures. For example, if the device in the drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0058] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the present invention.

[0059] like Figure 1a-4 As shown, the present invention provides a liquid cooling distribution device, which includes:

[0060] The heat exchanger 100, the first pump 71, the second pump 72, the secondary liquid inlet 46, the secondary liquid outlet 49, the primary liquid inlet 48, the primary liquid outlet 47 and the three-way regulating valve 93 are provided. The heat exchanger 100 has a first heat exchange pipe section 100a and a second heat exchange pipe section 100b. The three-way regulating valve 93 has a first end a, a second end b and a third end c. The three-way regulating valve 93 has three states and can be switched between the three states: a first state: the first end a is connected to the second end b and the third end c is disconnected; a second state: the first end a is connected to the third end c and the second end b is disconnected; a third state: the first end a is connected to both the second end b and the third end c;

[0061] The secondary-side liquid inlet 46 can be in communication with the first end a of the three-way regulating valve 93, one end of the first pump 71 can be in communication with the second end b of the three-way regulating valve 93, one end of the second pump 72 can be in communication with the third end c of the three-way regulating valve 93, the other ends of the first pump 71 and the second pump 72 can both be in communication with one end of the first heat exchange pipe segment 100a, and the other end of the first heat exchange pipe segment 100a can be in communication with the secondary-side liquid outlet 49;

[0062] The primary side liquid inlet 48 can be connected to one end of the second heat exchange pipe segment 100b, and the other end of the second heat exchange pipe segment 100b can be connected to the primary side liquid outlet 47;

[0063] The first heat exchange pipe section 100a and the second heat exchange pipe section 100b exchange heat, and only one of the first pump 71 and the second pump 72 is turned on, and the other is in a standby state. When the first pump 71 needs maintenance, the first end a of the three-way regulating valve 93 is connected to the third end c, and the second end b is blocked, so that the first pump 71 is not connected and the second pump 72 is connected. When the second pump 72 needs maintenance, the first end a of the three-way regulating valve 93 is connected to the second end b, and the third end c is blocked, so that the second pump 72 is not connected and the first pump 71 is connected.

[0064] It also includes a proportional regulating valve, which can adjust the flow rate of the heat exchange fluid entering the first heat exchange pipe section 100a and / or the second heat exchange pipe section 100b according to the load of the liquid cooling distribution device.

[0065] The present invention provides at least two pumps, each of which is connected to the heat exchange device, the secondary side liquid inlet and the secondary side liquid outlet respectively, and only one of the two pumps is turned on while the other is in standby state, thereby realizing a backup redundant design, so that when one of the pumps needs maintenance (damage or failure), the other can continue to work, and can be repaired and replaced without shutting down the CDU, thereby improving the operating reliability of the liquid cooling distribution device, increasing the service life of the liquid cooling distribution device, and solving the problem in the prior art that the water pump of the CDU has no redundancy, and if damaged, it will cause the system to fail to operate normally and the system reliability is low; the present invention also adjusts the flow rate of the heat exchange fluid entering the first heat exchange pipe section and / or the second heat exchange pipe section according to the load of the liquid cooling distribution device through the setting of a proportional control valve, and can realize accurate and fast control of the flow rate to adapt to different loads, improve versatility, and reduce energy waste while meeting heat exchange requirements, thereby improving energy efficiency.

[0066] In the present invention, when the CDU equipment is operating normally, that is, when the first pump and the second pump are not broken, the alternating opening and closing of the two pumps is achieved through electrical control, and the three-way regulating valve 93 is preferably normally open, that is, the three ends a, b, and c are interconnected or fully open. The three-way regulating valve 93 is used to repair and replace pumps. For example, when the first pump 71 is broken and needs to be replaced, it is necessary to manually connect the first end a of the three-way regulating valve 93 to the third end c, while the second end b is blocked. Because there is a one-way valve behind the water pump, the second end b in front of the first water pump is blocked. Therefore, when replacing the first pump 71, the unit can use another pump to operate normally, and the system will not leak due to the replacement of the first pump 71. When the second pump 72 is broken, it is necessary to manually connect the first end a of the three-way regulating valve 93 to the second end b, while the third end c is blocked. The same applies to other operations.

[0067] In some embodiments,

[0068] The heat exchange pipe 100 further includes a first pipeline 101, a second pipeline 102, a third pipeline 103, a fourth pipeline 104, a fifth pipeline 105, a sixth pipeline 106, a seventh pipeline 107, and an eighth pipeline 108. One end of the first pipeline 101 is connected to the first end a of the three-way regulating valve 93, one end of the second pipeline 102 is connected to the second end b of the three-way regulating valve 93, the other end of the second pipeline 102 is connected to one end of the first pump 71, the other end of the first pump 71 is connected to one end of the first heat exchange pipe segment 100a through the third pipeline 103, the other end of the first heat exchange pipe segment 100a is connected to the secondary side liquid outlet 49 through the fourth pipeline 104, the fifth pipeline 105 connects one end of the second pump 72 to the third end c of the three-way regulating valve 93, and the sixth pipeline 106 connects the other end of the second pump 72 to the third pipeline 103.

[0069] The primary side liquid inlet 48 is connected to one end of the second heat exchange pipe segment 100b through the seventh pipeline 107, and the other end of the second heat exchange pipe segment 100b is connected to the primary side liquid outlet 47 through the eighth pipeline 108; the proportional control valve is arranged on the eighth pipeline 108, and / or is arranged between the fourth pipeline 104 and the first pipeline 101.

[0070] Through the connection relationship of the above-mentioned multiple pipelines, the present invention can effectively realize the connection of the heat exchange structure of two water pumps, heat exchangers, and three-way regulating valves on the secondary side, and can also realize the connection between the primary side and the second heat exchange pipe section of the heat exchanger. On the basis of realizing a heat exchange structure of a heat exchanger, when one of the pumps is damaged or fails, the other can continue to work, thereby improving the operating reliability of the liquid cooling distribution device, increasing the service life of the liquid cooling distribution device, and solving the problem that the water pump of the CDU in the prior art has no redundancy, and if damaged, it will cause the system to fail to operate normally and the system reliability is low; the present invention also uses the connection setting form of the proportional regulating valve to adjust the size of the heat exchange fluid flow entering the first heat exchange pipe section and / or the second heat exchange pipe section according to the load of the liquid cooling distribution device, and can realize fine control of the flow to adapt to different loads, improve versatility, and reduce energy waste while meeting the heat exchange requirements, thereby improving energy efficiency.

[0071] The three-way regulating valve 93 (preferably a three-way ball valve) of the present invention has three states:

[0072] State 1: The secondary side liquid inlet 46 is connected to the first pump 71 but not to the second pump 72. In this case, the second pump 72 can be repaired or replaced.

[0073] State 2: The secondary side liquid inlet 46 is connected to the second pump 72, but not to the first pump 71. In this case, the first pump 71 can be repaired or replaced.

[0074] State 3: The secondary side liquid inlet 46 is connected to the first pump 71 and the second pump 72. This is the default non-maintenance state.

[0075] Among the three states, state 3 is the default. When the corresponding water pump needs to be repaired, it can be switched to state 1 or state 2 manually or electrically. Since there is a one-way valve behind the pump, when the secondary side liquid inlet 46 and one of the water pumps are not connected, the other spare pump can be operated normally while the pump is replaced.

[0076] In some embodiments,

[0077] like Figure 2, Embodiment 1 further includes a ninth pipeline 109 and a tenth pipeline 110, the proportional regulating valve is a three-way proportional valve 90, the three-way proportional valve 90 includes a fourth end d, a fifth end e and a sixth end f, the fifth end e can be communicated with the fourth end d and / or with the sixth end f; one end of the ninth pipeline 109 is communicated with the secondary side liquid inlet 46, the other end of the ninth pipeline 109 is communicated with the fourth end d of the three-way proportional valve 90, the other end of the first pipeline 101 is communicated with the fifth end e of the three-way proportional valve 90, one end of the tenth pipeline 110 is communicated with the sixth end f of the three-way proportional valve 90, and the other end of the tenth pipeline 110 is connected to the fourth pipeline 104;

[0078] The three-way proportional valve 90 can adjust the flow rate from the sixth end f to the fifth end e, and thereby adjust the flow rate of the fluid flowing from the tenth pipeline 110 to the first pipeline 101; when the load of the liquid cooling distribution device is less than a first preset load, the flow rate from the sixth end f of the three-way proportional valve 90 to the fifth end e can be increased; when the load of the liquid cooling distribution device is greater than a second preset load, the flow rate from the sixth end f of the three-way proportional valve 90 to the fifth end e can be reduced, wherein the first preset load is less than or equal to the second preset load.

[0079] The present invention also provides a proportional regulating valve, preferably a three-way proportional valve, which is provided at the connection between the tenth pipeline, the ninth pipeline and the first pipeline. The proportional regulating valve can adjust the flow rate of the heat exchange fluid entering the first heat exchange pipe section according to the load of the liquid cooling distribution device. In particular, when the load of the liquid cooling distribution device is less than the first preset load, the flow rate from the sixth end of the three-way proportional valve to the fifth end can be increased. When the load of the liquid cooling distribution device is greater than the second preset load, the flow rate from the sixth end of the three-way proportional valve to the fifth end can be decreased, thereby achieving fine control of the flow rate to adapt to different loads. That is, when the heat exchange load of the liquid cooling distribution device is small, a larger amount of fluid can be bypassed through the proportional valve to return to the first pipeline, thereby reducing the flow rate of the heat exchange fluid and reducing energy waste. When the heat exchange load of the liquid cooling distribution device is large, a smaller amount of fluid can be bypassed through the proportional valve to increase the flow rate of the heat exchange fluid and increase the flow rate of the heat exchange fluid output to the outside, thereby meeting the heat exchange demand. In this way, fine control of the flow rate can be achieved to adapt to different loads, improve versatility, and reduce energy waste while meeting the heat exchange demand, thereby improving energy efficiency.

[0080] like Figure 2 and Figure 3The diagram shows the system principle and internal structure of the present invention. Secondary liquid enters a three-way proportional valve 90 from the secondary inlet 46 for fluid distribution. One path flows through a three-way regulating valve 93 (preferably a three-way ball valve) into the circulation pump system. Another path connects to the secondary outlet of the heat exchanger 100, short-circuiting the pumps and regulating the flow rate at the CDU secondary outlet 49. The circulation pump system comprises a three-way ball valve, parallel circulation pumps (a first pump 71 and a second pump 72), and first and second check valves 91 and 92 connected in series at their outlets. After flowing through the circulation pump system, the liquid flows into the inlet of the heat exchanger 100 and out of the secondary outlet 49. The outflowing liquid is supplied to the liquid-cooled cabinet. After cooling the cabinet, it returns to the secondary inlet 46, thus completing the secondary circulation (the side closest to the cooling source is called the primary side, and the side closest to the user is called the secondary side).

[0081] Regarding the primary side of the system: the primary side is the cold source side. The primary side fluid enters the heat exchanger 100 through the primary side liquid inlet 48, exchanges heat with the secondary side fluid, and then flows out of the CDU through the primary side liquid outlet 47.

[0082] In some embodiments,

[0083] like Figure 4 As shown, in embodiment 2, the proportional control valve is a two-way proportional valve 94, which is arranged on the eighth pipeline 108, and the other end of the first pipeline 101 is connected to the secondary side liquid inlet 46, and the two-way proportional valve 94 can adjust the flow rate of the fluid flowing from the eighth pipeline 108 to the primary side liquid outlet 47; when the load of the liquid cooling distribution device is less than the first preset load, the opening of the two-way proportional valve 94 can be reduced, and when the load of the liquid cooling distribution device is greater than the second preset load, the opening of the two-way proportional valve 94 can be increased, wherein the first preset load is less than or equal to the second preset load.

[0084] The present invention also sets a proportional regulating valve, preferably a two-way proportional valve, which is set on the eighth pipeline. It can adjust the flow rate of the heat exchange fluid entering the second heat exchange pipe section according to the load of the liquid cooling distribution device, especially when the load of the liquid cooling distribution device is less than the first preset load, the opening of the two-way proportional valve is adjusted to decrease, and when the load of the liquid cooling distribution device is greater than the second preset load, the opening of the two-way proportional valve is adjusted to increase, thereby realizing fine control of the flow rate to adapt to different loads, that is, when the heat exchange load of the liquid cooling distribution device is small, the flow rate of the primary side heat exchange fluid can be reduced by reducing the opening of the two-way proportional valve, thereby ensuring the heat exchange capacity and reducing energy waste; and when the heat exchange load of the liquid cooling distribution device is large, the flow rate of the primary side heat exchange fluid can be increased by increasing the opening of the two-way proportional valve, thereby meeting the heat exchange demand; thereby realizing fine control of the flow rate to adapt to different loads, improving versatility, and reducing energy waste while meeting the heat exchange demand, thereby improving energy efficiency.

[0085] Figure 4 In another embodiment of the present invention, the three-way proportional valve 90 is replaced with a two-way proportional valve 94, and the valve is moved to the primary side, eliminating the three-way proportional valve 90 between the secondary side water pump inlet and the plate exchanger outlet. This allows the heat exchange capacity of the CDU to be adjusted by directly adjusting the primary side flow without affecting the secondary side pressure difference. Figure 2 The three-way proportional valve is replaced with a two-way proportional valve 94. Compared with the structural layout of the three-way proportional valve, one three-way structure is reduced, making the system structure more compact.

[0086] In some embodiments,

[0087] The system further includes a liquid replenishing tank 60 and a liquid replenishing pump 70. The liquid replenishing tank 60 can be connected to the first pipeline 101 through an eleventh pipeline 111 (i.e., the outlet of the liquid replenishing pump 70 is preferably connected to the pipeline before the inlets of the two circulation pumps). The liquid replenishing pump 70 is disposed on the eleventh pipeline 111. The liquid replenishing tank 60 is also connected to a drain port 42 and a liquid replenishing port 43.

[0088] It also includes an expansion tank 80 and a twelfth pipeline 112, wherein the expansion tank 80 is connected to the first pipeline 101 through the twelfth pipeline 112;

[0089] It also includes a first one-way valve 91 and a second one-way valve 92. The first one-way valve 91 is arranged on the third pipeline 103 to only allow fluid to flow from the first pump 71 to the first heat exchange pipe section 100a; the second one-way valve 92 is arranged on the sixth pipeline 106 to only allow fluid to flow from the second pump 72 to the first heat exchange pipe section 100a.

[0090] This is a further preferred structural form of the liquid-cooling distribution device of the present invention. By providing a liquid replenishing tank and a liquid replenishing pump, the first pipeline inside the liquid-cooling distribution device can be replenished with liquid, ensuring that the amount of liquid on the secondary side is sufficient, ensuring that sufficient heat exchange can be achieved to meet user needs. Excess liquid in the liquid replenishing tank can be discharged through the drain port, and the liquid replenishing port can replenish the liquid inside the liquid replenishing tank.

[0091] The present invention also provides an expansion tank, that is, an expansion tank 80 is connected to the inlet of the parallel circulation pump to balance the pressure of the system, so that the operation process of the liquid cooling distribution unit is more stable;

[0092] The present invention further preferably provides first and second one-way valves, which can ensure that the fluid pumped out by the first pump enters the heat exchanger while preventing the fluid in the heat exchanger from flowing back to the first pump. Similarly, it can ensure that the fluid pumped out by the second pump enters the heat exchanger while preventing the fluid in the heat exchanger from flowing back to the second pump.

[0093] The one-way valve of the present invention can prevent liquid from flowing back into the circulation pump. The two sets of parallel circulation pumps, one for use and one for backup, effectively improve the safety and emergency reliability of the CDU system. For easy maintenance, the two ends of the pump are preferably connected with a chuck.

[0094] The system of the present invention also includes a three-way proportional valve 90, the inlet and outlet of the three-way proportional valve 90 are respectively connected to the outlet and inlet pipelines of the parallel circulation pump system, that is, the circulation pump system is bypassed through the three-way proportional valve 90, and the secondary side heat exchange flow is adjusted by adjusting the three-way proportional valve 90.

[0095] In some embodiments,

[0096] The heat exchanger 100, the first pump 71 and the second pump 72 are all disposed inside the housing 200, and the secondary liquid inlet 46, the secondary liquid outlet 49, the primary liquid inlet 48 and the primary liquid outlet 47 are disposed outside the housing 200.

[0097] The device also includes at least two fans, at least one of which is in operation and at least one is in standby mode.

[0098] The present invention also provides at least two fans, at least one of which is running and at least one is in standby mode, so that the fans also have a backup redundant design, so that when one or a group of fans is damaged or fails, the other one or a group can continue to work, thereby further improving the operational reliability of the liquid cooling distribution device and further improving the service life of the liquid cooling distribution device.

[0099] In some embodiments,

[0100] It also includes an electrical box 55, which is located in the housing 200 and has a controller 56 disposed therein;

[0101] At least two fans include a first fan 51 and a second fan 52 provided on one side of the electrical box 55, and a third fan 53 and a fourth fan 54 provided on the other side of the electrical box 55.

[0102] The first fan 51 and the third fan 53 form a first fan group, the second fan 52 and the fourth fan 54 form a second fan group, the first fan group forms a first air path for driving the airflow, the second fan group forms a second air path for driving the airflow, and only one fan in the first fan group is turned on and the other is in standby state, and only one fan in the second fan group is turned on and the other is in standby state.

[0103] The present invention also arranges the first and second fans on one side of the electrical box and the third and fourth fans on the other side of the electrical box, so that fans are arranged on both sides of the electrical box, thereby improving the uniformity of airflow and improving the uniformity of heat exchange of the electrical box and other components inside the shell; by having only one fan in the first group of fans turned on and the other in standby mode, and having only one fan in the second group of fans turned on and the other in standby mode, so that the two air paths circulate at the same time, each fan group also has a backup redundant design, so that when one of the fans needs maintenance, the other one works, ensuring that it can be disassembled for maintenance during normal operation, further improving the operating reliability of the liquid cooling distribution device, and further improving the service life of the liquid cooling distribution device.

[0104] In some embodiments,

[0105] The housing 200 includes a front panel 10 and a rear panel 40 disposed opposite each other. The front panel 10 is provided with a first grille 14 and a second grille 15, and the rear panel 40 is provided with a third grille 50. The first grille 14 is disposed opposite the first fan 51, and the second grille 15 is disposed opposite the second fan 52. The first grille 14 and the second grille 15 are air inlet grilles, and the third grille 50 is an air outlet grille.

[0106] Parallel working mode: the first fan 51 and the second fan 52 are both running, while the third fan 53 and the fourth fan 54 are both in standby mode; or the third fan 53 and the fourth fan 54 are both running, while the first fan 51 and the second fan 52 are both in standby mode;

[0107] Cross-working mode: the first fan 51 and the fourth fan 54 are both running, while the second fan 52 and the third fan 53 are both in standby mode; or, the second fan 52 and the third fan 53 are both running, while the first fan 51 and the fourth fan 54 are both in standby mode.

[0108] These are a variety of different structural forms and operating modes of the two groups of fans (4 fans) and three grilles of the present invention that cooperate with each other, that is, it can effectively achieve one fan group in one group running and the other on standby, and one fan group in another group running and the other on standby, ensuring a backup redundant design. When one of the running fan groups fails, the other fan group in the group can be operated to ensure the continuous and effective operation of the liquid cooling distribution unit, thereby improving the operating reliability of the liquid cooling distribution device and increasing its service life.

[0109] The electrical box of the present invention is located at the front of the CDU. Several controllers 56 are housed within the box 55. The box 55 has several cooling fans located along the front and rear surfaces of the CDU's length. At least two sets of fans are provided, each in standby mode, with one set operating while the other is inactive. The CDU's front and rear panels feature air inlet and outlet grilles (a first grille 14, a second grille 15, and a third grille 50), which, in conjunction with the two sets of fans, form a cooling air duct. To facilitate heat dissipation from the box, the fans are preferably oriented toward the interior of the box.

[0110] The present invention provides a compact, symmetrical, and beautifully designed CDU system. It also features two sets of fans and air ducts to achieve redundancy in heat dissipation for electrical components, improving CDU reliability. A proportional valve in the bypass allows for precise control of system flow.

[0111] In some embodiments,

[0112] The front panel 10 is further provided with a display screen 11, a switch 12 and a communication interface 13, and the first grid 14 and the second grid 15 are symmetrically arranged relative to the display screen 11;

[0113] The secondary liquid inlet 46, the secondary liquid outlet 49, the primary liquid inlet 48 and the primary liquid outlet 47 are all arranged on the rear panel 40, the secondary liquid inlet 46 and the secondary liquid outlet 49 are symmetrically arranged relative to the third grid 50, and the primary liquid inlet 48 and the primary liquid outlet 47 are symmetrically arranged relative to the third grid 50.

[0114] The first and second grilles of the present invention are symmetrically arranged relative to the display screen, and the first and second fans are respectively opposite to the first and second grilles, so that the two fans are also symmetrically arranged relative to the display screen, thereby improving the overall aesthetics of the liquid cooling distribution unit.

[0115] The present invention utilizes symmetrical designs for the CDU front panel and air inlet and outlet grilles, the rear panel water inlet and outlet ports, and the electrical box air inlet and outlet ports. Dual sets of fans are used to achieve redundant cooling fans for the electrical box, achieving a symmetrical and aesthetically pleasing overall structural appearance while improving the reliability of the CDU.

[0116] like Figure 1a and Figure 1b The figure shows the appearance of the present invention. The CDU shell of the present invention is composed of a front panel 10, a bottom shell 20, a top cover 30 and a rear panel 40; the front panel 10 includes a display screen 11, a switch 12, a communication interface 13, a first grid 14, a second grid 15 and a handle 16; the rear panel 40 includes a drain port 42, a refill port 43, a power supply connector 44, a secondary side liquid inlet 46, a primary side liquid outlet 47, a primary side liquid inlet 48, a secondary side liquid outlet 49 and a third grid 50.

[0117] The present invention provides a CDU flow system with a proportional valve with a bypass arrangement, which can achieve fine control of the system flow.

[0118] The present invention can solve the following problems simultaneously:

[0119] 1. The current CDU structure has no redundancy for water pumps and cooling fans, resulting in insufficient reliability.

[0120] 2. The current CDU flow control is not precise enough;

[0121] 3. The current CDU system structure is not compact enough and not beautiful enough.

[0122] The present invention also provides a cabinet heat exchange device, which includes the aforementioned liquid cooling distribution device.

[0123] The improvement of the present invention is:

[0124] 1. Two water pumps are directly connected through a three-way ball valve, and the water pumps can be replaced online by switching.

[0125] 2. Saves structural space and avoids adding a ball valve to each water pump and a tee to the inlet pipe.

[0126] 3. A three-way proportional valve is used to adjust the CDU output flow, which can adjust the flow according to the load conditions. While ensuring the heat exchange capacity, it can also reduce energy waste and improve the system energy efficiency.

[0127] The present invention proposes a compact distributed liquid-cooled CDU, also known as a liquid-cooled distribution unit or a cooling capacity distribution unit. An embodiment of the present invention is a drawer-type CDU that is inserted into a liquid-cooled server cabinet. The CDU serves as a place for heat exchange between the server side (secondary side) and the cold source side (primary side). It mainly includes a heat exchanger, a secondary-side liquid-cooled circulation pump, a circulation pump outlet check valve, a secondary-side system flow regulating valve, a secondary-side liquid replenishment tank and liquid replenishment pump, an expansion tank, an electrical control box, a cooling fan, and temperature, humidity, and pressure sensors.

[0128] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention. The above description is merely a preferred embodiment of the present invention. It should be noted that those skilled in the art can make various improvements and variations without departing from the technical principles of the present invention, and such improvements and variations shall also be considered within the scope of protection of the present invention.

Claims

1. A liquid cooling distribution device, characterized in that: include: A heat exchanger (100), a first pump (71), a second pump (72), a secondary side liquid inlet (46), a secondary side liquid outlet (49), a primary side liquid inlet (48), a primary side liquid outlet (47) and a three-way regulating valve (93); the heat exchanger (100) has a first heat exchange pipe section (100a) and a second heat exchange pipe section (100b); the three-way regulating valve (93) has a first end (a), a second end (b) and a third end (c); the three-way regulating valve (93) has three states and can be switched between the three states: a first state: the first end (a) is connected to the second end (b) and the third end (c) is disconnected; a second state: the first end (a) is connected to the third end (c) and the second end (b) is disconnected; a third state: the first end (a) is connected to both the second end (b) and the third end (c); The secondary side liquid inlet (46) can be communicated with the first end (a) of the three-way regulating valve (93), one end of the first pump (71) can be communicated with the second end (b) of the three-way regulating valve (93), one end of the second pump (72) can be communicated with the third end (c) of the three-way regulating valve (93), the other end of the first pump (71) and the other end of the second pump (72) can both be communicated with one end of the first heat exchange pipe section (100a), and the other end of the first heat exchange pipe section (100a) can be communicated with the secondary side liquid outlet (49); The primary side liquid inlet (48) can be connected to one end of the second heat exchange pipe section (100b), and the other end of the second heat exchange pipe section (100b) can be connected to the primary side liquid outlet (47); The first heat exchange pipe section (100a) and the second heat exchange pipe section (100b) exchange heat, and only one of the first pump (71) and the second pump (72) is turned on, and the other is in a standby state; when the first pump (71) needs maintenance, the first end (a) of the three-way regulating valve (93) is connected to the third end (c), and the second end (b) is blocked, so that the first pump (71) is not connected and the second pump (72) is connected; when the second pump (72) needs maintenance, the first end (a) of the three-way regulating valve (93) is connected to the second end (b), and the third end (c) is blocked, so that the second pump (72) is not connected and the first pump (71) is connected; It also includes a proportional regulating valve, which can adjust the flow rate of the heat exchange fluid entering the first heat exchange pipe section (100a) and / or the second heat exchange pipe section (100b) according to the load of the liquid cooling distribution device.

2. The liquid cooling distribution device according to claim 1, characterized in that: The system further comprises a first pipeline (101), a second pipeline (102), a third pipeline (103), a fourth pipeline (104), a fifth pipeline (105), a sixth pipeline (106), a seventh pipeline (107) and an eighth pipeline (108), wherein one end of the first pipeline (101) is in communication with the first end (a) of the three-way regulating valve (93), one end of the second pipeline (102) is in communication with the second end (b) of the three-way regulating valve (93), and the other end of the second pipeline (102) is in communication with one end of the first pump (71). The other end of the first pump (71) is connected to one end of the first heat exchange pipe section (100a) through the third pipe (103), the other end of the first heat exchange pipe section (100a) is connected to the secondary side liquid outlet (49) through the fourth pipe (104), the fifth pipe (105) connects one end of the second pump (72) to the third end (c) of the three-way regulating valve (93), and the sixth pipe (106) connects the other end of the second pump (72) to the third pipe (103); The primary side liquid inlet (48) is connected to one end of the second heat exchange pipe section (100b) through the seventh pipeline (107), and the other end of the second heat exchange pipe section (100b) is connected to the primary side liquid outlet (47) through the eighth pipeline (108); the proportional control valve is arranged on the eighth pipeline (108) and / or between the fourth pipeline (104) and the first pipeline (101).

3. The liquid cooling distribution device according to claim 2, characterized in that: The invention also includes a ninth pipeline (109) and a tenth pipeline (110), wherein the proportional regulating valve is a three-way proportional valve (90), and the three-way proportional valve (90) includes a fourth end (d), a fifth end (e) and a sixth end (f), wherein the fifth end (e) can be communicated with the fourth end (d) and / or the sixth end (f); one end of the ninth pipeline (109) is communicated with the secondary side liquid inlet (46), and the other end of the ninth pipeline (109) is communicated with the fourth end (d) of the three-way proportional valve (90); the other end of the first pipeline (101) is communicated with the fifth end (e) of the three-way proportional valve (90); one end of the tenth pipeline (110) is communicated with the sixth end (f) of the three-way proportional valve (90), and the other end of the tenth pipeline (110) is communicated with the fourth pipeline (104); The three-way proportional valve (90) is capable of regulating the flow rate of the fluid flowing from the sixth end (f) to the fifth end (e), thereby regulating the flow rate of the fluid flowing from the tenth pipeline (110) to the first pipeline (101); When the load of the liquid cooling distribution device is less than a first preset load, the flow rate from the sixth end (f) of the three-way proportional valve (90) to the fifth end (e) can be increased; when the load of the liquid cooling distribution device is greater than a second preset load, the flow rate from the sixth end (f) of the three-way proportional valve (90) to the fifth end (e) can be decreased, wherein the first preset load is less than or equal to the second preset load.

4. The liquid cooling distribution device according to claim 2, characterized in that: The proportional control valve is a two-way proportional valve (94), which is arranged on the eighth pipeline (108). The other end of the first pipeline (101) is connected to the secondary side liquid inlet (46). The two-way proportional valve (94) can adjust the flow rate of the fluid flowing from the eighth pipeline (108) to the primary side liquid outlet (47). When the load of the liquid cooling distribution device is less than a first preset load, the opening of the two-way proportional valve (94) can be reduced. When the load of the liquid cooling distribution device is greater than a second preset load, the opening of the two-way proportional valve (94) can be increased, wherein the first preset load is less than or equal to the second preset load.

5. The liquid cooling distribution device according to any one of claims 2 to 4, characterized in that: The invention also includes a fluid replenishing tank (60) and a fluid replenishing pump (70), wherein the fluid replenishing tank (60) can be connected to the first pipeline (101) through an eleventh pipeline (111), and the fluid replenishing pump (70) is arranged on the eleventh pipeline (111); the fluid replenishing tank (60) is also provided with a drain port (42) and a fluid replenishing port (43) in communication with each other; It also includes an expansion tank (80) and a twelfth pipeline (112), wherein the expansion tank (80) is connected to the first pipeline (101) through the twelfth pipeline (112); The heat exchange pipe section (100a) further comprises a first one-way valve (91) and a second one-way valve (92), wherein the first one-way valve (91) is arranged on the third pipeline (103) to only allow fluid to flow from the first pump (71) to the first heat exchange pipe section (100a); and the second one-way valve (92) is arranged on the sixth pipeline (106) to only allow fluid to flow from the second pump (72) to the first heat exchange pipe section (100a).

6. The liquid cooling distribution device according to any one of claims 1 to 5, characterized in that: It also includes a housing (200), wherein the heat exchanger (100), the first pump (71), and the second pump (72) are all arranged inside the housing (200), and the secondary liquid inlet (46), the secondary liquid outlet (49), the primary liquid inlet (48), and the primary liquid outlet (47) are arranged outside the housing (200); The device also includes at least two fans, at least one of which is in operation and at least one is in standby mode.

7. The liquid cooling distribution device according to claim 6, characterized in that: It also includes an electrical box (55), the electrical box (55) is located in the housing (200), and a controller (56) is provided inside the electrical box (55); The at least two fans include a first fan (51) and a second fan (52) provided on one side of the electrical box (55), and a third fan (53) and a fourth fan (54) provided on the other side of the electrical box (55). The first fan (51) and the third fan (53) form a first fan group, the second fan (52) and the fourth fan (54) form a second fan group, the first fan group forms a first air path for driving the airflow, the second fan group forms a second air path for driving the airflow, and only one fan in the first fan group is turned on and the other is in a standby state, and only one fan in the second fan group is turned on and the other is in a standby state.

8. The liquid cooling distribution device according to claim 7, characterized in that: The housing (200) comprises a front panel (10) and a rear panel (40) arranged opposite to each other; a first grille (14) and a second grille (15) are provided on the front panel (10); a third grille (50) is provided on the rear panel (40); the first grille (14) is arranged opposite to the first fan (51); the second grille (15) is arranged opposite to the second fan (52); the first grille (14) and the second grille (15) are air inlet grilles, and the third grille (50) is an air outlet grille; Parallel working mode: the first fan (51) and the second fan (52) are both running, while the third fan (53) and the fourth fan (54) are both in standby mode; Alternatively, the third fan (53) and the fourth fan (54) are both running, while the first fan (51) and the second fan (52) are both in standby mode; Cross-operation mode: the first fan (51) and the fourth fan (54) are both running, while the second fan (52) and the third fan (53) are both in standby mode; Alternatively, the second fan (52) and the third fan (53) are both running, while the first fan (51) and the fourth fan (54) are both in a standby state.

9. The liquid cooling distribution device according to claim 8, characterized in that: The front panel (10) is further provided with a display screen (11), a switch (12) and a communication interface (13), and the first grid (14) and the second grid (15) are symmetrically arranged relative to the display screen (11); The secondary side liquid inlet (46), the secondary side liquid outlet (49), the primary side liquid inlet (48) and the primary side liquid outlet (47) are all arranged on the rear panel (40); the secondary side liquid inlet (46) and the secondary side liquid outlet (49) are symmetrically arranged relative to the third grid (50); and the primary side liquid inlet (48) and the primary side liquid outlet (47) are symmetrically arranged relative to the third grid (50).

10. A cabinet heat exchange device, characterized in that: The liquid cooling distribution device comprises the liquid cooling distribution device according to any one of claims 1 to 9.

Images