Liquid cooling distribution device and cabinet heat exchange device

Abstract

The invention provides a liquid cooling distribution device and a cabinet heat exchange device.The liquid cooling distribution device comprises a heat exchanger, a first pump, a second pump, a secondary side liquid inlet, a secondary side liquid outlet, a primary side liquid inlet and a primary side liquid outlet, the secondary side liquid inlet communicates with one end of the first pump, the other end of the first pump communicates with one end of a first heat exchange pipe section, and the other end of the first heat exchange pipe section communicates with the other end of a second heat exchange pipe section; the other end of the first heat exchange pipe section communicates with a secondary side liquid outlet, one end of a second pump communicates with the first pipeline through a fourth pipeline, and the other end of the second pump communicates with the second pipeline through a fifth pipeline; the primary side liquid inlet is communicated with one end of the second heat exchange pipe section, and the other end of the second heat exchange pipe section is communicated to the primary side liquid outlet; only one of the first pump and the second pump is opened, and the other pump is in a standby state at the moment. According to the invention, the problems that the water pump of the CDU in the prior art has no redundancy, the system cannot operate normally if the water pump is damaged, and the reliability of the system is low can be solved.

Description

Technical Field

[0001] The 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 high-performance server cooling.

[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. The CDU circulates coolant in a closed-loop system within the rack on the secondary (cooling application) side and utilizes facility water on the primary (heat dissipation) side. The CDU has pumps, water 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 CDU 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, and energy-saving data centers can obtain the precise, optimal cooling performance required by the system.

[0004] Since the CDU in the prior art has technical problems such as the water pump has no redundancy and if damaged, the system cannot operate normally and has low reliability, 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 of the CDU in the prior art that the water pump has no redundancy, and if damaged, the system cannot operate normally and the system reliability is low, 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] The heat exchanger, the first pump, the second pump, the secondary side liquid inlet, the secondary side liquid outlet, the primary side liquid inlet and the primary side liquid outlet, also include a first pipeline, a second pipeline, a third pipeline, a fourth pipeline, a fifth pipeline, a sixth pipeline and a seventh pipeline, wherein the heat exchanger has a first heat exchange pipe section and a second heat exchange pipe section inside,

[0008] The secondary side liquid inlet is connected to one end of the first pump through the first pipeline, the other end of the first pump is connected to one end of the first heat exchange pipe section through the second pipeline, the other end of the first heat exchange pipe section is connected to the secondary side liquid outlet through the third pipeline, the fourth pipeline connects one end of the second pump to the first pipeline, and the fifth pipeline connects the other end of the second pump to the second pipeline;

[0009] The primary side liquid inlet is connected to one end of the second heat exchange pipe segment through the sixth pipeline, and the other end of the second heat exchange pipe segment is connected to the primary side liquid outlet through the seventh pipeline;

[0010] The first heat exchange pipe section exchanges heat with the second heat exchange pipe section, and only one of the first pump and the second pump is turned on, while the other is in a standby state.

[0011] In some embodiments,

[0012] It also includes a fluid replenishment tank and a fluid replenishment pump. The fluid replenishment tank is connected to the first pipeline through an eighth pipeline, and the fluid replenishment pump is arranged on the first pipeline. The fluid replenishment tank is also respectively connected with a drain port and a fluid replenishment port.

[0013] In some embodiments,

[0014] It also includes an expansion tank and a ninth pipeline, wherein the expansion tank is connected to the first pipeline through the ninth pipeline.

[0015] In some embodiments,

[0016] It also includes a first one-way valve and a second one-way valve, wherein the first one-way valve is arranged on the second 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 fifth pipeline to only allow fluid to flow from the second pump to the first heat exchange pipe section.

[0017] In some embodiments,

[0018] It also includes a tenth pipeline and a proportional valve, one end of the tenth pipeline is connected to the first pipeline, and the other end is connected to the third pipeline, the proportional valve is arranged on the tenth pipeline, and the proportional valve can adjust the flow rate of the fluid flowing from the third pipeline to the first pipeline; when the load of the liquid cooling distribution device is less than the first preset load, the opening of the proportional valve can be increased, and when the load of the liquid cooling distribution device is greater than the second preset load, the opening of the proportional valve can be reduced, wherein the first preset load is less than or equal to the second preset load.

[0019] In some embodiments,

[0020] It also includes a shell, the heat exchanger, the first pump and the second pump are all arranged inside the shell, and the secondary side liquid inlet, the secondary side liquid outlet, the primary side liquid inlet and the primary side liquid outlet are arranged outside the shell;

[0021] The device also includes at least two fans, at least one of which is in operation and at least one is in standby mode.

[0022] In some embodiments,

[0023] It also includes an electrical box, which is located in the housing and has a controller disposed inside the electrical box;

[0024] 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.

[0025] 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 wind path for driving airflow, the second fan group forms a second wind path for driving 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.

[0026] In some embodiments,

[0027] The housing comprises a front panel and a rear panel which are arranged opposite to each other, the front panel is provided with a first grille and a second grille, the rear panel is provided with a third grille, the first grille is arranged opposite to the first fan, and the second grille is arranged opposite to the second fan;

[0028] The first grille and the second grille are air inlet grilles, and the third grille is an air outlet grille;

[0029] Parallel working mode: the first fan and the second fan are both running, and the third fan and the fourth fan are both in standby mode; or the third fan and the fourth fan are both running, and the first fan and the second fan are both in standby mode;

[0030] 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.

[0031] In some embodiments,

[0032] 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;

[0033] 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.

[0034] The present invention also provides a cabinet heat exchange device, which includes the aforementioned liquid cooling distribution device.

[0035] The liquid cooling distribution device and cabinet heat exchange device provided by the present invention have the following beneficial effects:

[0036] 1. The present invention provides at least two pumps, which are respectively connected to the heat exchange device, the secondary side liquid inlet and the secondary side liquid outlet, and only one of the two pumps is turned on while the other is in a standby state, so that a backup redundant design can be realized, so that 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 and the service life of the liquid cooling distribution device, and solving the problem that the water pump of the CDU in the prior art does not have redundancy, and if damaged, the system cannot operate normally, resulting in low system reliability.

[0037] 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 flow and improving the uniformity of heat exchange of the electrical box and other components inside the shell by the airflow; 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.

[0038] 3. The present invention can also adjust the flow rate of the fluid flowing from the third pipeline to the first pipeline through the tenth pipeline arranged between the first pipeline and the third pipeline, and the proportional valve arranged on the tenth pipeline, especially when the load of the liquid cooling distribution device is less than the first preset load, the opening of the proportional valve can be increased, and when the load of the liquid cooling distribution device is greater than the second preset load, the opening of the proportional valve can be decreased, 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, more 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; and when the heat exchange load of the liquid cooling distribution device is large, a smaller amount of fluid is 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; 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

[0039] Figure 1a is a front perspective structural diagram of the liquid cooling distribution device of the present invention;

[0040] Figure 1b is a back perspective structural diagram of the liquid cooling distribution device of the present invention;

[0041] Figure 2 is a system structure diagram of the liquid cooling distribution device of the present invention;

[0042] Figure 3 It is a diagram of the internal structure of the entire liquid cooling distribution device of the present invention.

[0043] The reference numerals are:

[0044] 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. Back panel; 42. Drain port; 43. Refill port; 44. Power supply connector; 46. Secondary side liquid inlet; 47. Primary side liquid outlet; 48. Primary side liquid inlet; 49. Secondary side liquid outlet; 51. First fan; 52. Second fan; 53. Third fan; 54. Fourth fan; 55. Electrical box; 56. Controller; 60. Refill tank; 70. Refill pump; 71. First pump; 72. Second pump; 80. Expansion tank; 90. Proportional valve; 91. First one-way valve; 92. Second one-way valve; 100. Heat exchanger; 100a. First heat exchange pipe section; 100b. Second heat exchange pipe section;

[0045] 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; 200. Shell. DETAILED DESCRIPTION

[0046] The following will be combined with the 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 described embodiments 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 by no means 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 creative work are within the scope of protection of the present invention.

[0047] 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, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0048] Unless otherwise specifically stated, the relative arrangement of the parts and steps described in these embodiments, numerical expressions and numerical values ​​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 accompanying drawings are not drawn according to the actual proportional relationship. The technology, method and equipment known to ordinary technicians in the relevant field may not be discussed in detail, but in appropriate cases, the technology, method and equipment should be regarded as a part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0049] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the 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 devices or elements 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 contours of each component itself.

[0050] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. 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 figure. For example, if the device in the accompanying 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.

[0051] 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. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the present invention.

[0052] like Figure 1a-3 As shown, the present invention provides a liquid cooling distribution device, which includes:

[0053] The heat exchanger 100, the first pump 71, the second pump 72, 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, further include a first pipeline 101, a second pipeline 102, a third pipeline 103, a fourth pipeline 104, a fifth pipeline 105, a sixth pipeline 106 and a seventh pipeline 107, and the heat exchanger 100 has a first heat exchange pipe section 100a and a second heat exchange pipe section 100b inside.

[0054] The secondary side liquid inlet 46 is connected to one end of the first pump 71 through the first pipeline 101, the other end of the first pump 71 is connected to one end of the first heat exchange pipe segment 100a through the second pipeline 102, the other end of the first heat exchange pipe segment 100a is connected to the secondary side liquid outlet 49 through the third pipeline 103, the fourth pipeline 104 connects one end of the second pump 72 to the first pipeline 101, and the fifth pipeline 105 connects the other end of the second pump 72 to the second pipeline 102;

[0055] The primary side liquid inlet 48 is connected to one end of the second heat exchange pipe segment 100b through the sixth pipeline 106, and the other end of the second heat exchange pipe segment 100b is connected to the primary side liquid outlet 47 through the seventh pipeline 107;

[0056] The first heat exchange pipe section 100a exchanges heat with the second heat exchange pipe section 100b, and only one of the first pump 71 and the second pump 72 is turned on, while the other is in a standby state.

[0057] The present invention provides at least two pumps, which are respectively connected to the heat exchange device, the secondary side liquid inlet and the secondary side liquid outlet, and only one of the two pumps is turned on while the other is in a standby state, so that a backup redundant design can be achieved, so that 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 and the service life of the liquid cooling distribution device, and solving the problem that the water pump of the CDU in the prior art does not have redundancy, and if damaged, the system cannot operate normally, resulting in low system reliability.

[0058] like Figure 2 and Figure 3 As shown, it is a system principle diagram and an internal structure diagram of the whole machine of the present invention. The secondary side liquid enters from the secondary side liquid inlet 46 and passes through the circulation pump system. The circulation pump system includes a parallel circulation pump (a first pump 71 and a second pump 72) and a first check valve 91 and a second check valve 92 connected in series at their outlets. After passing through the circulation pump system, it flows into the inlet of the heat exchanger 100 and flows out from the secondary side liquid outlet 49 after passing through the heat exchanger. The outflowing liquid is provided to the liquid cooling cabinet, and after cooling the liquid cooling cabinet, it returns to the secondary side liquid inlet 46, thereby forming a secondary side circulation (the one close to the cold source is called the primary side, and the one close to the user is called the secondary side).

[0059] Regarding the primary side of the system: the primary side is the cold source side, and the primary side fluid enters the heat exchanger 100 through the primary side liquid inlet 48 to exchange heat with the secondary side fluid, and then flows out of the CDU through the primary side liquid outlet 47.

[0060] In some embodiments,

[0061] It also includes a fluid replenishment tank 60 and a fluid replenishment pump 70, the fluid replenishment tank 60 is connected to the first pipeline 101 through the eighth pipeline 108 (that is, the outlet of the fluid replenishment pump 70 is preferably connected to the pipeline before the inlet of the two circulation pumps), and the fluid replenishment pump 70 is arranged on the first pipeline 101; the fluid replenishment tank 60 is also respectively connected to the drain port 42 and the fluid replenishment port 43.

[0062] This is a further preferred structural form of the liquid-cooling distribution device of the present invention. Through the provision of a liquid replenishing tank and a liquid replenishing pump, the first pipeline inside the liquid-cooling distribution device can be replenished to ensure that the amount of liquid on the secondary side is sufficient and 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 inside of the liquid replenishing tank.

[0063] In some embodiments,

[0064] It also includes an expansion tank 80 and a ninth pipeline 109 , and the expansion tank 80 is connected to the first pipeline 101 through the ninth pipeline 109 .

[0065] 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.

[0066] In some embodiments,

[0067] 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 second pipeline 102 to only allow the 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 fifth pipeline 105 to only allow the fluid to flow from the second pump 72 to the first heat exchange pipe section 100a.

[0068] The present invention further preferably provides a first and a second one-way valve, 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.

[0069] The one-way valve of the present invention can prevent the liquid from flowing back to the circulation pump. The two sets of parallel circulation pumps are used in one for use and one for backup, which effectively improves the safety and emergency reliability of the CDU system. For easy maintenance, the two ends of the pump are preferably connected by a chuck.

[0070] In some embodiments,

[0071] It also includes a tenth pipeline 110 and a proportional valve 90, one end of the tenth pipeline 110 is connected to the first pipeline 101, and the other end is connected to the third pipeline 103, the proportional valve 90 is arranged on the tenth pipeline 110, and the proportional valve 90 can adjust the flow rate of the fluid flowing from the third pipeline 103 to the first pipeline 101; when the load of the liquid cooling distribution device is less than the first preset load, the opening of the proportional valve 90 can be increased, and when the load of the liquid cooling distribution device is greater than the second preset load, the opening of the proportional valve 90 can be decreased, wherein the first preset load is less than or equal to the second preset load.

[0072] The present invention can also adjust the flow rate of the fluid flowing from the third pipeline to the first pipeline through a tenth pipeline arranged between the first pipeline and the third pipeline, and a proportional valve arranged on the tenth pipeline, especially when the load of the liquid cooling distribution device is less than the first preset load, the opening of the proportional valve can be increased, and when the load of the liquid cooling distribution device is greater than the second preset load, the opening of the proportional valve can be decreased, 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, more 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; and when the heat exchange load of the liquid cooling distribution device is large, a smaller amount of fluid is 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; 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.

[0073] The system of the present invention also includes a proportional valve 90, the inlet and outlet of the 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 by the proportional valve 90, and the secondary side heat exchange flow is adjusted by adjusting the proportional valve 90.

[0074] In some embodiments,

[0075] It also includes a housing 200, the heat exchanger 100, the first pump 71 and the second pump 72 are all arranged inside the housing 200, and 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 arranged outside the housing 200;

[0076] The device also includes at least two fans, at least one of which is in operation and at least one is in standby mode.

[0077] 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.

[0078] In some embodiments,

[0079] It also includes an electrical box 55, which is located in the housing 200, and a controller 56 is disposed inside the electrical box 55;

[0080] The at least two fans include a first fan 51 and a second fan 52 disposed on one side of the electrical box 55, and a third fan 53 and a fourth fan 54 disposed on the other side of the electrical box 55.

[0081] 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 wind path for driving airflow, the second fan group forms a second wind path for driving 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.

[0082] 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 fan group turned on and the other in standby mode, and having only one fan in the second fan group turned on and the other in standby mode, so that two air paths can 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 can work, ensuring that the liquid cooling distribution device 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.

[0084] In some embodiments,

[0085] The housing 200 includes a front panel 10 and a rear panel 40 that are arranged opposite to each other. The front panel 10 is provided with a first grille 14 and a second grille 15. The rear panel 40 is provided with a third grille 50. The first grille 14 is arranged opposite to the first fan 51, and the second grille 15 is arranged opposite to the second fan 52.

[0086] The first grille 14 and the second grille 15 are air inlet grilles, and the third grille 50 is an air outlet grille;

[0087] Parallel working mode: the first fan 51 and the second fan 52 are both running, and 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, and the first fan 51 and the second fan 52 are both in standby mode;

[0088] 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.

[0089] These are a variety of different structural forms and operating modes of the cooperation between the two groups of fans (4 fans) and the three grilles of the present invention, that is, it can effectively achieve one fan group in one group running and the other on standby, and one fan group in another fan 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 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.

[0090] The electrical box of the present invention is located at the front of the CDU, and a plurality of controllers 56 are arranged inside the electrical box 55; the electrical box 55 has a plurality of cooling fans on the front and rear surfaces along the length direction of the CDU, and there are at least two sets of cooling fans, which are used in a one-for-one mode, that is, one set of the front and rear fans is working, and the other set is not working. The front and rear panels of the CDU have air inlet and outlet grilles (the first grille 14, the second grille 15, and the third grille 50), which cooperate with the two sets of fans to form a cooling air duct; in order to facilitate the heat dissipation of the electrical box, the fan direction is preferably toward the inside of the electrical box.

[0091] The present invention provides a CDU system with a compact system, symmetrical and beautiful structure, and two sets of fans and air ducts are designed to achieve redundancy in heat dissipation of electrical components, thereby improving the reliability of the CDU. The proportional valve set by the bypass realizes fine control of the system flow.

[0092] In some embodiments,

[0093] The front panel 10 is also 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;

[0094] 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.

[0095] 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.

[0096] The present invention realizes redundant design of heat dissipation fans of the electrical box by symmetrically designing the front panel and air inlet and outlet grilles of the CDU, symmetrically designing the inlet and outlet water pipes of the rear panel, and symmetrically designing the air inlet and outlet of the electrical box in conjunction with double sets of fans, thereby achieving symmetrical and aesthetic appearance of the overall structure and improving the reliability of the CDU.

[0097] 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; wherein 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; wherein the rear panel 40 includes a drain port 42, a liquid replenishment 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.

[0098] The present invention provides a CDU flow system having a proportional valve with a bypass arrangement, which can achieve fine control of the system flow.

[0099] The present invention can solve the following problems simultaneously:

[0100] 1. The water pump and cooling fan in the current CDU structure have no redundancy and are not reliable enough;

[0101] 2. The current CDU flow control is not sophisticated enough;

[0102] 3. The current CDU system structure is not compact enough and not beautiful enough.

[0103] The present invention also provides a cabinet heat exchange device, which includes the aforementioned liquid cooling distribution device.

[0104] The present invention proposes a compact distributed liquid-cooled CDU, which is also called a liquid-cooled distribution unit or a cold capacity distribution unit. An embodiment of the present invention is a drawer-type CDU, which 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), and 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 electric control box, a cooling fan, and temperature, humidity, pressure and other sensors.

[0105] The above description is only 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 principle of the present invention shall be included in the protection scope of the present invention. The above description is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and variations can be made without departing from the technical principles of the present invention. These improvements and variations should also be regarded as the protection scope 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 liquid inlet (46), a secondary liquid outlet (49), a primary liquid inlet (48) and a primary liquid outlet (47), further comprising a first pipeline (101), a second pipeline (102), a third pipeline (103), a fourth pipeline (104), a fifth pipeline (105), a sixth pipeline (106) and a seventh pipeline (107); the heat exchanger (100) has a first heat exchange pipe section (100a) and a second heat exchange pipe section (100b) inside. The secondary side liquid inlet (46) is connected to one end of the first pump (71) through the first pipeline (101); the other end of the first pump (71) is connected to one end of the first heat exchange pipe section (100a) through the second pipeline (102); the other end of the first heat exchange pipe section (100a) is connected to the secondary side liquid outlet (49) through a third pipeline (103); the fourth pipeline (104) connects one end of the second pump (72) to the first pipeline (101); and the fifth pipeline (105) connects the other end of the second pump (72) to the second pipeline (102); The primary side liquid inlet (48) is connected to one end of the second heat exchange pipe section (100b) through the sixth pipeline (106), and the other end of the second heat exchange pipe section (100b) is connected to the primary side liquid outlet (47) through the seventh pipeline (107); The first heat exchange pipe section (100a) exchanges heat with the second heat exchange pipe section (100b), and only one of the first pump (71) and the second pump (72) is turned on, while the other is in a standby state.

2. The liquid cooling distribution device according to claim 1, characterized in that: The invention also comprises a fluid replenishment tank (60) and a fluid replenishment pump (70); the fluid replenishment tank (60) is connected to the first pipeline (101) via an eighth pipeline (108); the fluid replenishment pump (70) is arranged on the first pipeline (101); the fluid replenishment tank (60) is also respectively connected to a liquid discharge port (42) and a fluid replenishment port (43).

3. The liquid cooling distribution device according to claim 1, characterized in that: It also includes an expansion tank (80) and a ninth pipeline (109), wherein the expansion tank (80) is connected to the first pipeline (101) through the ninth pipeline (109).

4. The liquid cooling distribution device according to claim 1, characterized in that: The heat exchange pipe segment (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 second pipeline (102) to only allow the fluid to flow from the first pump (71) to the first heat exchange pipe segment (100a); and the second one-way valve (92) is arranged on the fifth pipeline (105) to only allow the fluid to flow from the second pump (72) to the first heat exchange pipe segment (100a).

5. The liquid cooling distribution device according to any one of claims 1 to 4, characterized in that: The invention also comprises a tenth pipeline (110) and a proportional valve (90), one end of the tenth pipeline (110) being connected to the first pipeline (101) and the other end being connected to the third pipeline (103), the proportional valve (90) being arranged on the tenth pipeline (110), and the proportional valve (90) being capable of adjusting the flow rate of the fluid flowing from the third pipeline (103) to the first pipeline (101); when the load of the liquid cooling distribution device is less than a first preset load, the opening of the proportional valve (90) can be increased, and when the load of the liquid cooling distribution device is greater than a second preset load, the opening of the proportional valve (90) can be decreased, wherein the first preset load is less than or equal to the second preset load.

6. The liquid cooling distribution device according to any one of claims 1 to 5, characterized in that: It also includes a shell (200), the heat exchanger (100), the first pump (71) and the second pump (72) are all arranged inside the shell (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 shell (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 disposed inside the electrical box (55); The at least two fans include a first fan (51) and a second fan (52) arranged on one side of the electrical box (55), and a third fan (53) and a fourth fan (54) arranged 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 wind path for driving airflow, the second fan group forms a second wind path for driving 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) which are 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 a standby state; 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 also 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 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 grille (50); and the primary liquid inlet (48) and the primary liquid outlet (47) are symmetrically arranged relative to the third grille (50).

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

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