Liquid cooling assembly and cabinet

Abstract

The application discloses a liquid cooling assembly and a cabinet. The liquid cooling assembly comprises a liquid cooling pipeline, a pump, a liquid supplement tank and a heater. The liquid cooling pipeline is provided with a liquid supplement port, a liquid inlet end and a liquid outlet end. The pump is connected in series with the liquid cooling pipeline to enable the coolant in the liquid cooling pipeline to flow from the liquid inlet end to the liquid outlet end. The input end of the pump is communicated with the liquid supplement port. The input end of the pump is further provided with a pressure sensor. The liquid supplement tank is located at the highest position of the liquid path of the liquid cooling pipeline. The liquid supplement tank is communicated with the liquid supplement port to supplement the liquid cooling pipeline with liquid under the action of gravity. The heater is arranged in the liquid supplement tank. The heater is suitable for heating the liquid or air in the liquid supplement tank until the pressure value detected by the pressure sensor reaches the set value when the pressure value detected by the pressure sensor is less than the set value. The application can automatically supplement liquid when the liquid is insufficient. The structure is simple, and the pump is convenient to start.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of liquid cooling, in particular to a liquid cooling assembly and cabinet. BACKGROUND

[0002] The heat exchange capacity of the liquid cooling system is strong, and it is widely used in many fields. For the cooling liquid circulation, the cooling liquid will inevitably evaporate and leak over time during operation, and there will be some gas remaining when vacuumizing. In order to ensure the cooling effect, it is necessary to timely remove the gas and supplement the liquid. Therefore, a water tank, a water supplement pump and a one-way valve are arranged in the liquid cooling system to supplement the liquid to the pipeline. The existing liquid cooling system has the disadvantages of complex structure, large volume, large weight and high cost, which leads to low power density, complex system and difficult maintenance, and the liquid supplement pump needs to be maintained regularly. The liquid supplement signal usually comes from the system low pressure alarm, and then the liquid supplement pump will perform the liquid supplement operation. However, after the system runs for a long time, there will be dirty blockage, such as dirt in the filter, which will cause the pressure drop of the filter to increase, resulting in a high system pressure and detection error. That is to say, even if the system is short of liquid, it may not report a low pressure alarm, so that automatic liquid supplement cannot be realized. The cooling liquid circulation is generally driven by a circulating pump, and the pressure at the input end of the circulating pump needs to reach a certain value when the liquid cooling assembly is in a low temperature environment or before the liquid cooling assembly runs, so that the circulating pump is difficult to start. SUMMARY

[0003] The present application aims to overcome the above-mentioned defects or problems in the background art, and provide a liquid cooling assembly and cabinet which can automatically supplement liquid when short of liquid, has a simple structure and is convenient to start the pump.

[0004] To achieve the above-mentioned purpose, the present application and its related embodiments adopt the following technical solutions, but are not limited to the following solutions:

[0005] The first technical solution and its related embodiments relate to a liquid cooling assembly for being placed in a cabinet, comprising a liquid cooling pipeline provided with a liquid supplement port, a liquid inlet end and a liquid outlet end; a pump connected in series with the liquid cooling pipeline to make the cooling liquid of the liquid cooling pipeline flow from the liquid inlet end to the liquid outlet end, an input end of the pump being in communication with the liquid supplement port, and the input end of the pump being further provided with a pressure sensor; a liquid supplement water tank located at the highest position of the liquid cooling pipeline, the liquid supplement water tank being in communication with the liquid supplement port to supplement the liquid cooling pipeline with liquid under the action of gravity, a distance between the highest water level of the liquid in the liquid supplement water tank and a top wall of the liquid supplement water tank being greater than a first value; and a heater placed in the liquid supplement water tank, the heater being adapted to heat the liquid or air in the liquid supplement water tank until the pressure value detected by the pressure sensor reaches a set value when the pressure value detected by the pressure sensor is less than the set value.

[0006] The second technical solution is based on the first technical solution, and is a preferred embodiment of the first technical solution. The liquid cooling assembly comprises a heat exchange device, the heat exchange device is provided with a heat exchanger, the heat exchanger extends in the vertical direction and is sequentially provided with a heat exchange part and a liquid supplementing part from bottom to top, the heat exchange part is sequentially provided with a liquid returning part, a liquid to be cooled part and a liquid supplying part from top to bottom, the liquid returning part is provided with a liquid returning end, the liquid supplying part is provided with a liquid supplying end, the liquid to be cooled part is provided with a plurality of cooling liquid flow channels and air passing channels for heat exchange with the cooling liquid flow channels, the cooling liquid flow channels and the air passing channels are in communication with the liquid returning part and the liquid supplying part; the heat exchange part is connected in series with the liquid cooling pipeline through the liquid supplying end and the liquid returning end, the pump is also adapted to drive the cooling liquid to flow from the liquid inlet end, the liquid returning end, the liquid supplying end to the liquid outlet end; the liquid returning part is adjacent to the liquid supplementing part to exchange heat, and the liquid supplementing part forms the liquid supplementing tank.

[0007] The third technical solution is based on the second technical solution, and is a preferred embodiment of the second technical solution. The cabinet is provided with a containing cavity, the liquid cooling unit is arranged in the containing cavity, a side part of the containing cavity is provided with an air inlet in the horizontal direction, and a top part of the containing cavity is provided with an air outlet; the heat exchange device comprises two heat exchangers arranged at an included angle, one ends of the two heat exchangers are opposite to each other in the horizontal first direction, and the other ends of the two heat exchangers are away from each other to form an opening, outer sides of the two heat exchangers and cavity walls of the containing cavity cooperate to form a containing space covering an included angle region between the two heat exchangers; the two heat exchange parts are connected in parallel, the liquid returning part extends in the horizontal direction and is provided with a liquid returning end at an end part close to the opening end of the included angle of the two heat exchangers, the two liquid returning ends are connected in parallel to form a liquid returning port, the liquid supplying part extends in the horizontal direction and is provided with a liquid supplying end at an end part close to the opening end of the included angle of the two heat exchangers, and the two liquid supplying ends are connected in parallel to form a liquid supplying port; the cooling liquid flow channels and the air passing channels are alternately arranged on each heat exchange part along the length direction of the heat exchange part, and each air passing channel and each cooling liquid flow channel extend in the vertical direction; the two liquid supplementing parts jointly form a liquid supplementing unit, the liquid supplementing unit is provided with a liquid outlet in the containing space; the pump and the liquid cooling pipeline are arranged in the containing space, and the pump is adapted to drive the cooling liquid to flow from the liquid inlet end, the liquid returning port and the liquid supplying port to the liquid outlet end.

[0008] The fourth technical solution is based on the first technical solution, and is a preferred embodiment of the first technical solution, wherein the cabinet body is provided with a containing cavity, the liquid cooling unit is arranged in the containing cavity, the heat exchange device is provided with two heat exchange units arranged at an included angle, one end of the two heat exchange units in a horizontal first direction intersects with each other, and the other end is away from each other to form an opening, the outer side surface of the two heat exchange units cooperates with the cavity wall of the containing cavity to form a containing space covering the included angle region between the two heat exchange units, each heat exchanger extends along a vertical direction and is sequentially provided with a heat exchange part and a liquid supplementing part from bottom to top, the heat exchange part includes a plurality of cooling liquid flow channels and a through air channel for heat exchange with the cooling liquid flow channels, the two heat exchange parts jointly form a heat exchange unit, the heat exchange unit is provided with a liquid supply port and a liquid return port in the containing space, the two liquid supplementing parts jointly form a liquid supplementing unit, the liquid supplementing unit is provided with a liquid outlet in the containing space, the liquid supplementing part forms the liquid supplementing tank, the pump is also suitable for driving the cooling liquid to flow from the liquid inlet end, the liquid return port, the liquid supply port to the liquid outlet end, and the pump and the liquid cooling pipeline are arranged in the containing space.

[0009] The fifth technical solution is based on the fourth technical solution, and is a preferred embodiment of the fourth technical solution, wherein the side part of the containing cavity is provided with an air inlet in a horizontal direction, and the top part is provided with an air outlet, the cooling liquid flow channels and the through air channels are alternately arranged on the heat exchange part along a vertical direction, each cooling liquid flow channel and each through air channel extend along a horizontal direction, the uppermost cooling liquid flow channel is suitable for heat exchange with the liquid supplementing part, the through air channel at least includes a first through air channel close to the liquid supplementing part and a second through air channel away from the liquid supplementing part, the through air area of the first through air channel is smaller than that of the second through air channel, the two ends of the heat exchange part in the length direction are respectively provided with a liquid return part and a liquid supply part extending along a vertical direction, the liquid return part is provided with a liquid return end, the liquid supply part is provided with a liquid supply end, the two heat exchange parts are connected in series, the liquid return part of one heat exchange part is located at the opening end of the two heat exchangers, and the liquid supply part of the other heat exchange part is located at the opening end of the two heat exchangers, the liquid return end of the liquid return part located at the opening end of the two heat exchangers forms the liquid return port, and the liquid supply end of the liquid supply part located at the opening end of the two heat exchangers forms the liquid supply port, and each cooling liquid flow channel is in communication with the liquid return part and the liquid supply part.

[0010] The sixth technical solution is based on any one of the second to fifth technical solutions, and is a preferred embodiment of any one of the second to fifth technical solutions, wherein a heat conduction sheet is arranged between the heat exchange part and the liquid supplementing part, and the projection of the liquid supplementing part in the vertical direction covers the heat exchange part in each heat exchange unit.

[0011] The seventh technical solution is based on any one of the second to fifth technical solutions, and is a preferred embodiment of any one of the second to fifth technical solutions, wherein the heat exchange part and the liquid supplementing part are integrally formed, and the projection of the liquid supplementing part in the vertical direction covers the heat exchange part in each heat exchange unit.

[0012] The eighth technical solution is based on any one of the third to fifth technical solutions, and is a preferred embodiment of any one of the third to fifth technical solutions, wherein the two liquid supplementing parts are connected in series, the liquid outlet is formed on one end face of one of the liquid supplementing parts near the opening end of the two heat exchangers, and one of the liquid supplementing parts is provided with an expansion cover provided with a pressure relief valve.

[0013] The ninth technical solution is based on the eighth technical solution, and is a preferred embodiment of the eighth technical solution, wherein the expansion cover is near the included angle end of the two heat exchangers, the liquid supplementing part is provided with a visual window near the included angle end of the two heat exchangers so that the liquid level of the liquid supplementing part can be observed, and the side of the two liquid supplementing parts close to each other is further provided with an air separation plate connected to the top wall of the accommodating cavity.

[0014] The tenth technical solution relates to a cabinet comprising a cabinet body, the liquid cooling assembly of any one of the first to ninth technical solutions, and a heat generating assembly; the top of the cabinet body is provided with an accommodating cavity, and the cabinet body is further provided with a relatively closed heat dissipation cavity below the accommodating cavity; the side of the accommodating cavity is provided with an air inlet opening in the horizontal direction, and the top is provided with an air outlet opening; the liquid cooling assembly is arranged in the accommodating cavity; the heat generating assembly is arranged in the heat dissipation cavity and comprises a liquid cooling plate and an electrical assembly, and the liquid cooling plate is in communication with the liquid cooling pipeline to dissipate heat for at least part of the electrical assembly.

[0015] From the above description of the present application and its specific embodiments, it can be seen that, compared with the prior art, the technical solution of the present application and its related embodiments have the following beneficial effects due to the use of the following technical means:

[0016] In the first technical solution and related embodiments, the liquid supplementing tank is arranged at the uppermost position of the liquid cooling pipeline and supplements the liquid in the liquid cooling pipeline under the action of gravity through the liquid supplementing pipeline, thereby realizing automatic liquid supplementing of the liquid cooling pipeline and having a simple structure; the arrangement of the liquid supplementing tank also eliminates the need to use a liquid supplementing pump, thereby avoiding the maintenance problem and low-pressure starting problem of the liquid supplementing pump; in the present technical solution, the distance between the highest liquid level in the liquid supplementing tank and the top wall thereof is greater than a first value, so that there is air above the highest liquid level in the liquid supplementing tank; the air in this space can exert pressure on the liquid supplementing port when heated, so that the pressure at the input end of the pump can be increased by heating the liquid or air in the liquid supplementing tank before the pump is started or in a low-temperature environment; this is because when the temperature of the liquid rises or the air above the liquid is heated, the air pressure above the liquid will increase, and this air pressure will push the liquid in the liquid supplementing tank to flow to the liquid supplementing port; under the pressure of gravity and hot air, the pressure of the liquid supplementing port can gradually reach the set value, thereby increasing the pressure of the entire liquid cooling pipeline, so that the pump can be started normally; in the condition of low-pressure starting of the pump, the heater can be turned off when the pressure at the input end of the pump reaches the set value, and in the condition of low-temperature operation, the heater can be kept on to keep the pressure at the input end of the pump reaching the set value.

[0017] In the second technical solution and related embodiments, the pump is further adapted to drive the cooling liquid to flow from the liquid inlet end, the liquid return end, the liquid supply end to the liquid outlet end, wherein the temperature of the liquid inlet end is the highest, the temperature of the liquid outlet end is the lowest, and the temperature of the liquid return part is higher. Therefore, the heat exchange between the liquid return part and the liquid supplement part can be used to heat the liquid supplement part. Therefore, after the pump is normally running, if the liquid cooling assembly is always running in a low temperature environment, the heating of the liquid supplement part can be realized through the heat exchange between the liquid return part and the liquid supplement part, so as to ensure that the pressure of the liquid cooling pipeline can reach the set value when the liquid cooling assembly is in a low temperature condition, thereby ensuring the normal operation of the pump. Therefore, in this implementation condition, the heater can be turned off or the energy consumption of the heater can be reduced, thereby saving energy consumption. Each heat exchange unit extends in the vertical direction and is sequentially provided with a heat exchange part and a liquid supplement part from bottom to top. The structure of the heat exchange part can be used to support the liquid supplement part, without the need to set a separate support structure, thereby saving cost and avoiding the adverse effect of the support structure at other positions on the heat exchange of the heat exchange part.

[0018] In the third technical solution and related embodiments, the air inlet of the accommodating cavity is arranged at the side of the accommodating cavity, and the air outlet is arranged at the top of the accommodating cavity. The hot air density is small, so that the hot air flow discharged from the top of the accommodating cavity mainly flows upward and will not flow downward, thereby avoiding the disturbance of the hot air flow to the air inlets of the downstream electrical devices. When the air outlet is arranged at the top, in the conventional heat exchange device, the two heat exchange parts are V-shaped and the openings are upward. The fan is arranged above the area between the two heat exchange parts. The heat exchange parts are inclined relative to the vertical direction, and the air ducts in the heat exchange parts are also inclined relative to the vertical direction. After the fan works, the direction of the air flow changes after passing through the air duct. The air flow between the two heat exchange parts blows between them. Therefore, sand is easy to accumulate in the inner and outer angles at the bottom of the two heat exchange parts and in the air ducts in the heat exchange parts under the action of gravity and air flow. After long-term operation, the air resistance is large, which greatly affects the heat exchange efficiency. In the present technical solution, the structure of the heat exchange part makes each air duct pass air along the horizontal direction. Therefore, the direction of the air flow changes little when the air flow blows through the air duct. The air flow introduced from the air inlet can directly blow away the accumulated sand in the air duct. Since the opening formed by the angles of the two heat exchange parts is horizontally directed, sand is not easy to accumulate at the angles of the two heat exchange parts. At the same time, the air duct cools the cooling liquid flow channel.

[0019] The structure of the heat exchange part in the technical solution is inclined relative to the first direction, and under the condition that the length of the accommodating cavity is constant, the inclined arrangement of the heat exchange part makes it have a longer length, so that the liquid supplementing part also has a longer length, and under the condition that the height of the accommodating cavity is constant, this arrangement makes it only need to slightly reduce the height of the heat exchange part to arrange the liquid supplementing part thereon, and the capacity of the liquid supplementing part is larger, so that the liquid supplementing part has sufficient cooling liquid to supplement, thereby reducing the liquid supplementing frequency of the liquid supplementing part; more preferably, the liquid supplementing part is located above the heat exchange part, so that the liquid supplementing opening of the liquid supplementing part is located on the outer side, facilitating liquid supplementing operation; the two heat exchange parts are arranged at an angle, and also make the heat exchange parts have larger air passing areas and smaller volumes, further improving the heat exchange efficiency of the heat exchange parts.

[0020] The formation of the accommodating space makes it possible to place the pump and the liquid cooling pipeline in the accommodating space, thereby fully utilizing the space formed between the two heat exchange units and the accommodating cavity, wherein when the two liquid supplementing parts are connected in series, the liquid outlet is formed by the liquid outlet end of one of the liquid supplementing parts, and when the two liquid supplementing parts are connected in parallel, the liquid outlet is formed by the liquid outlet ends of the two liquid supplementing parts connected in parallel; since the liquid supply opening, the liquid return opening and the liquid outlet are located in the accommodating space, the communication pipeline of the cooling liquid conveying member and the liquid supply opening and the liquid return opening is located in the accommodating space, the communication pipeline of the cooling liquid conveying member and the liquid outlet is in the accommodating space, and the pump and the liquid cooling pipeline can also be placed in the accommodating space, so that the pump and the liquid cooling pipeline neither affect the air inlet of the air passing channel of the heat exchange part, nor make it possible to maintain the pump and the liquid cooling pipeline on one side of the accommodating cavity, so that the liquid cooling assembly has higher heat exchange efficiency and is convenient to install and maintain. Since the liquid supply opening and the liquid return opening are close to the opening ends of the two heat exchangers and are located on the end faces of the heat exchange parts, the maintenance of the liquid cooling pipeline and the installation of the liquid cooling pipeline and the liquid supply opening and the liquid return opening are concentrated on the opening side of the two heat exchangers, so that the installation and maintenance of the liquid cooling assembly can be realized on one side.

[0021] In this scheme, the two heat exchange parts are connected in parallel, that is, the liquid return part of each heat exchanger is the hottest liquid just recovered (the temperature difference between the liquid inside the heat exchange part and the outside cold air is the largest, and the heat exchange effect is the best), and at the same time, only half of the total flow of the system passes through each heat exchange part, which greatly reduces the system flow resistance, not only increases the heat exchange efficiency of the heat exchange part, but also reduces the system flow resistance, and more preferably, the heat exchange efficiency between the liquid return part and the liquid supplementing part is good.

[0022] Each air passing channel and each liquid cooling pipeline extend along the vertical direction and are alternately arranged along the length direction of the heat exchanger, so as to facilitate the arrangement of the liquid return part, the liquid to be cooled part and the liquid supply part from top to bottom in sequence.

[0023] In the fourth technical solution and related embodiments, the heat exchange device is arranged to be inclined relative to the first direction, and under the condition that the length of the accommodating cavity is constant, the inclined arrangement of the heat exchange portion makes it have a longer length, so that the liquid supplementing portion also has a longer length. Under the condition that the height of the accommodating cavity is constant, this arrangement makes it only need to slightly reduce the height of the heat exchange portion to arrange the liquid supplementing portion thereon, and the capacity of the liquid supplementing portion is larger, so that there is sufficient cooling liquid in the liquid supplementing portion to supplement, thereby reducing the liquid supplementing frequency of the liquid supplementing portion. More preferably, the liquid supplementing portion is arranged above the heat exchange portion, so that the liquid supplementing opening of the liquid supplementing portion is located on the outer side, facilitating liquid supplementing operation. The two heat exchange portions are arranged at an angle, and also make the heat exchange portions have a larger air passing area and a smaller volume, further improving the heat exchange efficiency of the heat exchange portions.

[0024] The formation of the accommodating space makes it possible to place the pump and the liquid cooling pipeline in the accommodating space, thereby fully utilizing the space formed by the two heat exchangers and the accommodating cavity. When the two heat exchange portions are connected in series, the liquid supply opening and the liquid return opening are formed by the liquid supply end of one heat exchange portion and the liquid return end of the other heat exchange portion, respectively. When the two heat exchange portions are connected in parallel, the liquid supply opening and the liquid return opening are formed by the liquid supply ends of the two heat exchange portions in parallel and the liquid return ends of the two heat exchange portions in parallel, respectively. When the two liquid supplementing portions are connected in series, the liquid outlet opening is formed by the liquid outlet end of one liquid supplementing portion. When the two liquid supplementing portions are connected in parallel, the liquid outlet opening is formed by the liquid outlet ends of the two liquid supplementing portions in parallel.

[0025] Since the liquid supply opening and the liquid return opening are located in the accommodating space, the communication pipeline of the liquid cooling pipeline and the liquid supply opening and the liquid return opening is located in the accommodating space. Since the liquid outlet opening is located in the accommodating space, the communication pipeline of the liquid supplementing opening and the liquid outlet opening is located in the accommodating space. Therefore, the pump and the liquid cooling pipeline can be placed in the accommodating space, so that the pump and the liquid cooling pipeline do not affect the air inlet of the air passing channel of the heat exchange portion, and the pump and the liquid cooling pipeline can be maintained on one side of the accommodating cavity, so that the liquid cooling assembly has a higher heat exchange efficiency and is convenient to install and maintain. The two heat exchange portions are arranged at an angle, and also make the heat exchange portions have a larger air passing area and a smaller volume, further improving the heat exchange efficiency of the heat exchange portions.

[0026] In the fifth technical solution and related embodiments, the air inlet of the accommodating cavity is arranged on the side of the accommodating cavity, and the air outlet is arranged on the top of the accommodating cavity. The hot air flow discharged from the top of the accommodating cavity mainly flows upward and does not flow downward, thereby avoiding disturbing the air inlet of the downstream electrical device by the hot air flow. When the air outlet is arranged on the top, in a conventional heat exchange device, the two heat exchange parts are V-shaped and open upward, the fan is arranged above the area between the two heat exchange parts, the heat exchange parts are inclined relative to the vertical direction, and the air ducts in the heat exchange parts are also inclined relative to the vertical direction. After the fan works, the air flow changes direction after passing through the air ducts, and the air flow of the two heat exchange parts blows between them. Therefore, sand is easily accumulated in the inner and outer included angles at the bottom of the two heat exchange parts and in the air ducts in the heat exchange parts under the action of gravity and air flow. After long-term operation, the air resistance is large, which greatly affects the heat exchange efficiency. In the technical solution, the structure of the heat exchange part is arranged such that the air ducts pass air along the horizontal direction. Therefore, the direction of the air flow blowing through the air ducts does not change, the resistance in the air ducts is small, and the air flow introduced from the air inlet can directly blow away the accumulated sand in the air ducts. Since the opening formed by the included angles of the two heat exchange parts is horizontally directed, sand is not easily accumulated in the included angles of the two heat exchange parts. At the same time, the air ducts cool the cooling liquid flow channels. The two heat exchange parts are connected in series, which is easy to realize water connection.

[0027] In the fifth technical solution and related embodiments, after the liquid cooling assembly is normally operated, the heater generally does not heat, and therefore the temperature of the liquid in the liquid supplementing part is basically consistent with the ambient temperature. Since the cooling liquid flow channel located at the uppermost position is suitable for heat exchange with the liquid supplementing part, the first air duct near the liquid supplementing part can utilize the heat exchange of the liquid supplementing part for heat dissipation. Therefore, the temperature of the cooling liquid flow channel near the first air duct is lower than that of the cooling liquid flow channel near the second air duct. The air passing area of the first air duct is set to be smaller than that of the second air duct, so that the first air duct and the second air duct both have high heat dissipation efficiency, thereby improving the heat dissipation efficiency of the heat exchange part as a whole.

[0028] In the fifth technical solution and related embodiments, the liquid supply port and the liquid return port are arranged on the end face of the corresponding heat exchange part near the opening end of the two heat exchangers, which further facilitates the installation and maintenance of the pipeline.

[0029] In the sixth technical solution and related embodiments, the heat-conducting sheet is arranged between the heat exchange part and the liquid supplementing part, further improving the heat exchange efficiency between the heat exchange part and the liquid supplementing part, so that when the liquid returning part is arranged at the upper end of the heat exchange part in the second or third technical solution, the liquid in the liquid supplementing part can be better heated by the liquid returning part, thereby ensuring the stable operation of the pump in a low-temperature environment; under the normal operation condition after the pump is normally started, the heater generally does not heat, so the temperature of the liquid in the liquid supplementing part is basically consistent with the ambient temperature, and the heat of the liquid returning part (second or third technical solution) or the cooling liquid flow channel (fourth or fifth technical solution) can be quickly taken away through the heat exchange of the liquid supplementing part, thereby compensating for the loss of the heat exchange efficiency of the heat exchange part caused by the arrangement of the liquid supplementing part. The projection of the liquid supplementing part along the vertical direction covers the heat exchange part, ensuring that the liquid supplementing part has a large enough volume, thereby reducing the liquid supplementing frequency, and enabling the liquid supplementing part and the heat exchange part to be in large-area contact, further improving the heat exchange efficiency.

[0030] In the seventh technical solution and related embodiments, when the height of the accommodating cavity is constant, the liquid supplementing part is arranged above the heat exchange part, which also means that the height of the heat exchange part will be reduced. Since the height of the heat exchange part is sacrificed due to the arrangement of the liquid supplementing part, the heat exchange efficiency of the heat exchange part will be affected to some extent. Therefore, the technical solution firstly integrates the heat exchange part and the liquid supplementing part, on the one hand, the processing is simpler, and on the other hand, since the heat exchange part is generally made of a material with good heat conductivity, the above arrangement also enables the heat exchange part and the liquid supplementing part to have good heat exchange efficiency. The projection of the liquid supplementing part along the vertical direction covers the heat exchange part, ensuring that the liquid supplementing part has a large enough volume, thereby reducing the liquid supplementing frequency, and enabling the liquid supplementing part and the heat exchange part to be in large-area contact, further improving the heat exchange efficiency.

[0031] In the eighth technical solution and related embodiments, the two liquid supplementing parts are connected in series, and the liquid outlet is formed on the end face of one of the liquid supplementing parts, further facilitating installation and maintenance; one of the liquid supplementing parts is provided with an expansion cover, and a pressure relief valve is arranged on the expansion cover. When the pressure of the liquid cooling pipeline is relatively large, the pressure of the liquid cooling pipeline can flow to the liquid supplementing part, the liquid level of the liquid supplementing part rises and squeezes the gas above the liquid, so that the pressure relief valve of the expansion cover is opened, that is, the pressure relief valve on the expansion cover can realize the pressure relief of the liquid cooling pipeline, preventing the pressure of the liquid cooling pipeline from being too large. When the pressure of the liquid cooling pipeline is relatively small, the liquid supplementing part can supplement liquid to the liquid supplementing level under the action of gravity, thereby integrating the functions of the liquid supplementing tank and the expansion tank, ensuring that the liquid cooling pipeline operates under a relatively stable pressure, and thus the expansion tank does not need to be arranged in the liquid cooling assembly, reducing the volume of the liquid cooling assembly and simplifying the structure. In addition, the two liquid supplementing parts are connected in series, further increasing the capacity of the liquid supplementing part and reducing the liquid supplementing frequency of the liquid supplementing part, and the operation is simpler. It should be understood that, on the basis of arranging the expansion cover in the liquid supplementing part, the gas pressure generated by the heating of the heater in the liquid supplementing tank should be insufficient to open the pressure relief valve.

[0032] In the ninth technical solution and related embodiments, the expansion cover is arranged close to the angle end of the two heat exchangers, which is convenient for liquid supplementing operation and makes the expansion cover away from the pump. Since the liquid pressure changes greatly near the position of the pump, the pump can affect the pressure of the liquid supplementing part, so that the expansion cover is away from the pump, the interference of the pump on the expansion cover is avoided, and the stable implementation of the expansion function of the liquid supplementing part is ensured. The liquid supplementing part is provided with a visual window close to the angle end of the two heat exchangers, so that the liquid level in the liquid supplementing part can be observed through the visual window during liquid supplementing, and the control is more accurate. The two liquid supplementing parts are further provided with air isolation plates on the side close to each other, which can be used to abut against the top wall of the accommodating cavity when the liquid cooling assembly is arranged in the accommodating cavity, so that the air flow is prevented from flowing through the gap between the heat exchange part and the top wall of the accommodating cavity, the air flow is prevented from being wasted, and most of the air flow is ensured to blow to the heat exchange part, and the heat exchange efficiency is improved.

[0033] In the tenth technical solution and related embodiments, the cabinet has the technical advantages of any one of the first to ninth technical solutions. The heat dissipation cavity is arranged below the accommodating cavity, and the electrical components in the heat dissipation cavity can be at least partially cooled by the liquid cooling mode. On the one hand, the liquid cooling mode is easier to control than the air cooling mode, and the heat dissipation efficiency is high. On the other hand, a relatively closed structure can be formed in the heat dissipation cavity, so that the protection of the heat dissipation cavity is improved. The liquid cooling assembly is arranged in the accommodating cavity at the top. When the liquid cooling assembly is cooled by the air cooling mode, the air inlet of the accommodating cavity is also arranged at the top. The air inlet is away from the ground and has a low air inlet temperature, so that the heat dissipation efficiency of the liquid cooling assembly is high, and the electrical components have high heat dissipation efficiency. Since the liquid cooling assembly does not have water inflow concerns, the air outlet can be arranged at the top of the cabinet, so that when multiple cabinets are used in parallel, the thermal flow disturbance to the downstream cabinet is not easy to occur. Even if the thermal flow flows out from the side of the top of the cabinet, since the hot air has small density, the influence on the downstream cabinet is not easy to occur. Since the liquid cooling assembly is arranged at the top, the side of the cabinet is not occupied, so that multiple cabinets can be used in parallel or side by side in the horizontal direction. BRIEF DESCRIPTION OF DRAWINGS

[0034] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed in the embodiment description are briefly introduced as follows. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0035] Figure 1 The schematic diagram of the cabinet of the present application embodiment 1 Figure 1 ;

[0036] Figure 2 The schematic diagram of the cabinet of the present application embodiment 1 Figure 2 ;

[0037] Figure 3 Schematic diagram of the cabinet of embodiment 1 of the present application Figure 3 ;

[0038] Figure 4 Top view of the heat exchange device of embodiment 1 of the present application in the accommodating cavity

[0039] Figure 5 Schematic diagram of the heat exchange device and the liquid cooling plate of embodiment 1 of the present application Figure 1 ;

[0040] Figure 6 Schematic diagram of the heat exchange device and the liquid cooling plate of embodiment 1 of the present application Figure 2 ;

[0041] Figure 7 Side view of the heat exchange device of embodiment 1 of the present application in the accommodating cavity, the third side wall of the accommodating cavity is hidden

[0042] Figure 8 Schematic diagram of the heat exchanger of embodiment 3 of the present application

[0043] Figure 9 Schematic diagram of the heat exchanger of embodiment 5 of the present application

[0044] Explanation of main reference signs:

[0045] Cabinet body 10; first side wall 11; second side wall 12; third side wall 13; fourth side wall 14; air inlet 111; air outlet 101; air extraction fan 102; first air inlet 131; second air inlet 141; support plate 15; partition plate 16; accommodating cavity 10A; heat dissipation cavity 10B; air passing cavity 10C; heat exchange device 20; heat exchanger 30; heat exchange part 31; liquid return part 311; part to be cooled 312; cooling liquid flow channel 3121; air passing channel 3122; first air passing channel 3123; second air passing channel 3124; heat dissipation fin 3125; liquid supply part 313; liquid supply port 314; liquid return port 315; liquid injection port 316; accommodating space 01; liquid supplement part 32; liquid outlet 321; visual window 322; air partition plate 323; expansion cover 33; heat conduction fin 34; pump 40; liquid cooling pipe 50; liquid supplement port 51; heat generating component 60; liquid cooling plate 61; electrical component 62. DETAILED DESCRIPTION

[0046] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are preferred embodiments of the present application, and should not be regarded as exclusion of other embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0047] Unless otherwise expressly defined, the use of terms such as "first," "second," or "third" in the claims, description, and accompanying drawings of this invention is for distinguishing different objects and not for describing a specific order.

[0048] Unless otherwise expressly defined, in the claims, description, and accompanying drawings of this invention, the use of directional terms such as "center," "lateral," "longitudinal," "horizontal," "vertical," "top," "bottom," "inner," "outer," "upper," "lower," "front," "rear," "left," "right," "clockwise," and "counterclockwise" to indicate orientation or positional relationships is based on the orientation and positional relationships shown in the accompanying drawings and is only for the convenience of describing the invention and simplifying the description, and is not intended to indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the specific scope of protection of this invention.

[0049] Unless otherwise expressly defined, the terms "fixed connection" or "fixed connection" used in the claims, description and drawings of this invention should be interpreted broadly to refer to any connection in which there is no displacement or relative rotation relationship between the two parties, including non-removable fixed connection, detachable fixed connection, integral connection and fixed connection by other means or components.

[0050] In the claims, description and accompanying drawings of this invention, the terms "comprising," "having," and variations thereof are used to mean "including but not limited to."

[0051] Example 1

[0052] See Figures 1-3 , Figures 1-3 A cabinet is shown, including a cabinet body 10, a liquid cooling assembly, and a heat-generating assembly 60.

[0053] See Figures 1-4 The cabinet 10 is rectangular in shape. Along a first direction, the cabinet 10 has a first sidewall 11 and a second sidewall 12 that are parallel and opposite to each other. Along a second direction perpendicular to the first direction, the cabinet 10 has a third sidewall 13 and a fourth sidewall 14 that are parallel and opposite to each other. The first direction is... Figure 4 The middle direction is up and down, and the second direction is... Figure 4 The center represents the left and right directions.

[0054] In this embodiment, the cabinet 10 is provided with a support plate 15 and a partition plate 16, see [link / reference] Figure 3The support plate 15 divides the cabinet 10 into an upper area and a lower area, the upper area forms a containing cavity 10A, the dividing plate 16 divides the lower area into a middle area and a bottom area, the middle area forms a heat dissipation cavity 10B, and the bottom area forms a wind passing cavity 10C, that is, the cabinet 10 is provided with the containing cavity 10A at the top and the wind passing cavity 10C at the bottom, and the cabinet 10 is provided with the heat dissipation cavity 10B between the containing cavity 10A and the wind passing cavity 10C, and the heat dissipation cavity 10B is relatively closed.

[0055] Referring to Figures 1-2 The containing cavity 10A is provided with an air inlet 111 on the first side wall 11 along the horizontal first direction, and is provided with an air outlet 101 at the top, and the air outlet 101 is close to the second side wall 12; the containing cavity 10A is further provided with a first air inlet 131 and a second air inlet 141 on the third side wall 13 and the fourth side wall 14 respectively.

[0056] In actual application, the air outlet 101 is provided with an exhaust fan 102.

[0057] The liquid cooling assembly is arranged in the containing cavity 10A and includes a heat exchange device 20 and a cooling liquid conveying member.

[0058] Referring to Figure 4 The heat exchange device 20 is provided with two heat exchangers 30 arranged at an angle, one end of the two heat exchangers 30 along the horizontal first direction intersects with each other, and the other end is away from each other to form an opening, and the outer side surface of the two heat exchangers 30 cooperates with the cavity wall of the containing cavity 10A to form a containing space 01 covering the angle area between the two heat exchangers 30, Figure 4 The projection of the containing space 01 along the vertical direction is a pentagonal shape. Referring to Figures 5-6 Each heat exchanger 30 extends along the vertical direction and is sequentially provided with a heat exchange part 31 and a liquid supplementing part 32 from bottom to top; the heat exchange part 31 includes a plurality of cooling liquid flow channels 3121 and a wind passing channel 3122 for heat exchange with the cooling liquid flow channels 3121; the two heat exchange parts 31 jointly form a heat exchange unit, the heat exchange unit is provided with a liquid supply port 314 and a liquid return port 315 in the containing space 01, and the two liquid supplementing parts 32 jointly form a liquid supplementing unit, and the liquid supplementing unit is provided with a liquid outlet 321 in the containing space 01.

[0059] When the two heat exchange parts 31 are connected in series, the liquid supply port 314 and the liquid return port 315 are formed by the liquid supply end of one heat exchange part 31 and the liquid return end of the other heat exchange part 31 respectively, and when the two heat exchange parts 31 are connected in parallel, the liquid supply port 314 and the liquid return port 315 are formed by the liquid supply ends of the two heat exchange parts 31 in parallel and the liquid return ends of the two heat exchange parts in parallel respectively; when the two liquid supplementing parts 32 are connected in series, the liquid outlet 321 is formed by the liquid outlet end of one liquid supplementing part 32, and when the two liquid supplementing parts 32 are connected in parallel, the liquid outlet 321 is formed by the liquid outlet ends of the two liquid supplementing parts 32 in parallel.

[0060] When the height of the accommodating cavity 10A is constant, the liquid supplementing part 32 is arranged above the heat exchanging part 31, which means that the height of the heat exchanging part 31 is reduced. Since the height of the heat exchanging part 31 is reduced due to the arrangement of the liquid supplementing part 32, the heat exchanging efficiency of the heat exchanging part 31 is affected. To this end, the heat conducting sheet 34 is arranged between the heat exchanging part 31 and the liquid supplementing part 32 to increase the heat exchanging efficiency between the heat exchanging part 31 and the liquid supplementing part 32. The projection of the liquid supplementing part 32 in each heat exchanger 30 along the vertical direction covers the heat exchanging part 31, so that the liquid supplementing part 32 has a large enough volume, thereby reducing the supplementing frequency and increasing the heat exchanging efficiency. Figures 4-7 The liquid supplementing part 32 is in the shape of a cuboid.

[0061] Specifically, referring to Figures 5-7 , the cooling liquid flow channel 3121 and the air flow channel 3122 are alternately arranged on the heat exchanging part 31 along the vertical direction, each cooling liquid flow channel 3121 and each air flow channel 3122 extend along the horizontal direction and form the to-be-cooled part 312, and the cooling liquid flow channel 3121 located at the uppermost position is adapted to exchange heat with the liquid supplementing part 32. The liquid returning part 311 and the liquid supplying part 313 are arranged at the two ends of the heat exchanging part 31 along the length direction and extend along the vertical direction, the liquid returning part 311 is provided with a liquid returning end, the liquid supplying part 313 is provided with a liquid supplying end, and each cooling liquid flow channel 3121 is in communication with the liquid returning part 311 and the liquid supplying part 313. That is, the liquid returning part 311, the to-be-cooled part 312 and the liquid supplying part 313 are sequentially arranged on the heat exchanging part 31 along the length direction, referring to Figure 7 , the heat exchanger 20 is further provided with the heat radiating fin 3125 in the air flow channel 3122 to further increase the heat exchanging efficiency.

[0062] Referring to Figures 5-6In the embodiment, the two heat exchange portions 31 are connected in series, the liquid supply end of the liquid supply portion 313 of one of the heat exchange portions 31 is connected with the liquid return end of the liquid return portion 311 of the other heat exchange portion 30 through a pipeline at the corner end of the two heat exchangers 30, thus the liquid return portion 311 of one of the heat exchange portions 31 is located at the opening end of the two heat exchangers 30, and the liquid supply portion 313 of the other heat exchange portion 31 is located at the opening end of the two heat exchangers 30; the liquid return end of the liquid return portion 311 located at the opening end of the two heat exchangers 30 forms a liquid return port 315, and the liquid supply end of the liquid supply portion 313 located at the opening end of the two heat exchangers 30 forms a liquid supply port 314, thus the liquid supply port 314 and the liquid return port 315 are both close to the opening end of the two heat exchangers 30 and are located on the end face of the corresponding heat exchange portion 31. In other embodiments, for example, when the two heat exchange portions 31 are connected in parallel, the liquid return portion 311 and the liquid supply portion 313 of each heat exchange portion 31 can be arranged close to the opening end of the two heat exchangers 30, at this time, the liquid return portion 311 and the liquid supply portion 313 are arranged in the vertical direction, thus the liquid supply end and the liquid return end of each heat exchange portion 31 are arranged close to the opening end of the two heat exchangers 30, the two liquid supply ends are connected in parallel to form the liquid supply port 314, and the two liquid return ends are connected in parallel to form the liquid return port 315. In actual application, the liquid injection port 316 is further arranged close to the corner end of each heat exchange portion 31, and the cooling liquid can be injected into or discharged from the heat exchange portion 31 through the liquid injection port 316.

[0063] Still referring to Figures 5-6 , the two liquid supplement portions 32 are connected in series, and the two liquid supplement portions 32 are connected through a pipeline at the corner end of the two heat exchangers 30, and the liquid outlet port 321 is formed on the end face of one of the liquid supplement portions 32, one of the liquid supplement portions 32 is provided with an expansion cover 33, the expansion cover 33 is provided with a pressure relief valve, and the distance between the highest water level of the liquid in the liquid supplement portion 32 and the top wall of the liquid supplement portion 32 is greater than the first value. The pressure relief valve can be used in the prior art, and the embodiment will not be described here. Thus, the liquid supply port 314, the liquid return port 315 and the liquid outlet port 321 are all close to the opening end of the two heat exchangers 30.

[0064] In the embodiment, preferably, the expansion cover 33 is arranged close to the corner end of the two heat exchangers 30, and the liquid supplement portion 32 is provided with a visible window 322 close to the corner end of the two heat exchangers 30, so that the liquid level of the liquid supplement portion 32 can be observed, that is, the operator can observe the water level in the liquid supplement portion 32.

[0065] In the embodiment, further preferably, the side close to each other of the two liquid supplement portions 32 is further provided with an air isolation plate 323 connected with the top wall of the accommodating cavity 10A, and the height of the air isolation plate 323 should be slightly higher than that of the expansion cover 33, referring to Figure 7 The arrangement of the air isolation plate 323 avoids the waste of air flow caused by the air flow flowing through the gap between the heat exchange portion 31 and the top wall of the accommodating cavity 10A, and ensures that most of the air flow blows to the heat exchange portion 31, thereby improving the heat exchange efficiency.

[0066] Referring to Figures 4-6 , the cooling liquid conveying member is arranged in the accommodating space 01 and below the liquid outlet 321, and is connected with the liquid supply port 314 and the liquid return port 315 to drive the cooling liquid to flow from the liquid return port 315 to the liquid supply port 314. The cooling liquid conveying member is further provided with a liquid supplement port 51 connected with the liquid outlet 321, so that the liquid supplement part 32 is adapted to supplement the cooling liquid to the liquid supplement port 51 under the action of gravity. The liquid supplement part 32 forms a liquid supplement tank at the highest position of the liquid path of the liquid cooling pipeline 50. The temperature of the liquid return port 315 is higher than that of the liquid supply port 314.

[0067] In the embodiment, the cooling liquid conveying member comprises the liquid cooling pipeline 50 and the pump 40. The liquid cooling pipeline 50 is provided with an inlet end, an outlet end and the liquid supplement port 51. The temperature of the inlet end is higher than that of the outlet end. The pump 40 is connected in series with the liquid cooling pipeline 50 to drive the cooling liquid to flow from the inlet end to the outlet end of the liquid cooling pipeline 50, to drive the cooling liquid to flow from the liquid return port 315 to the liquid supply port 314. The liquid supplement port 51 is arranged on the liquid cooling pipeline 50 and close to the input end of the pump 40, so that the pump 40 is adapted to drive the cooling liquid to flow from the inlet end, the liquid return port 315 and the liquid supply port 314. It should be understood that, in the embodiment, the cooling liquid conveying member means the pipeline part other than the heat exchange part 31.

[0068] In the embodiment, referring to Figures 5-6 , the pump 40 is connected in series between the inlet end of the liquid cooling pipeline 50 and the liquid return port 315 of one of the heat exchange parts 31. The liquid supply port 314 of the other heat exchange part 31 is connected with the outlet end of the liquid cooling pipeline 50.

[0069] Since the pressure of the input end of the pump 40 needs to reach a certain value when the pump 40 is running, it is difficult to start the pump 40 when the liquid cooling assembly is in a low-temperature environment or before the liquid cooling assembly is running. Therefore, it is necessary to increase the pressure of the input end of the pump 40 in the low-temperature environment or before the liquid cooling assembly is running. In the embodiment, a heater (not shown in the figure) is arranged in the liquid supplement part 32. The input end of the pump 40 is provided with a pressure sensor. The heater is adapted to heat the liquid or air in the liquid supplement part 32 until the pressure value detected by the pressure sensor reaches the set value when the pressure value is less than the set value. In the embodiment, the heater mainly heats the liquid in the liquid supplement part 32.

[0070] In actual application, the heater comprises a controller and a heating sheet. The heating sheet can be arranged at the bottom of the liquid supplement part 32. The controller controls the heating of the heating sheet according to the change of the pressure sensor. In other embodiments, a manual switch can be arranged to control the heating of the heater.

[0071] In the technical solution, the distance between the highest water level of the liquid in the liquid supplementing part 32 and the top wall thereof is greater than the first value, so that air is stored above the highest water level of the liquid, and the air in the space can apply pressure to the liquid supplementing port 51 when heated, so that the pressure of the input end of the pump 40 can be increased by heating the liquid in the liquid supplementing part 32 before the pump 40 is started, because the air pressure above the liquid increases after the temperature of the liquid rises, the air pressure pushes the liquid in the liquid supplementing part 32 to flow to the liquid supplementing port 51, and the pressure of the liquid supplementing port 51 gradually reaches the set value under the pressure of gravity and hot air, so that the pressure of the entire liquid cooling pipeline 50 is increased, so that the pump 40 can be normally started.

[0072] Under the condition of low-pressure starting of the pump 40, the heater can be turned off when the pressure of the input end of the pump 40 reaches the set value, and under the condition of low-temperature operation, the heater can be kept on to keep the pressure of the input end of the pump 40 reaching the set value.

[0073] In the embodiment, the accommodation space 01 is formed so that the cooling liquid conveying member can be placed in the accommodation space 01, so that the space formed between the two heat exchangers 30 and the accommodation cavity 10A is fully utilized, because the liquid supply port 314 and the liquid return port 315 are located in the accommodation space 01, the communication pipeline of the cooling liquid conveying member and the liquid supply port 314 and the liquid return port 315 is located in the accommodation space 01, because the liquid outlet port 321 is located in the accommodation space 01, the communication pipeline of the cooling liquid conveying member and the liquid outlet port 321 is in the accommodation space 01, the cooling liquid conveying member can also be placed in the accommodation space 01, the cooling liquid conveying member does not affect the air inlet of the air passage 3122 of the heat exchange part 31, and the cooling liquid conveying member can be maintained on one side of the accommodation cavity 10A, so that the liquid cooling assembly has high heat exchange efficiency and is convenient to install and maintain; the two heat exchange parts 31 are arranged at an angle, so that the heat exchange parts 31 have large air passage areas and small volumes, and the heat exchange efficiency of the heat exchange parts 31 is further improved. The liquid supply port 314 and the liquid return port 315 are close to the open ends of the two heat exchangers 30 and located on the end faces of the corresponding heat exchange parts 31, and the liquid outlet port 321 is close to the open ends of the two heat exchangers 30 and located on the end face of the liquid supplementing part 32, so that the maintenance of the cooling liquid conveying member, the installation and maintenance of the communication pipeline of the liquid outlet port 321 and the liquid supplementing port 51, and the installation and maintenance of the cooling liquid conveying member and the liquid supply port 314 and the liquid return port 315 are concentrated on the open side of the two heat exchangers 30, so that the installation and maintenance of the liquid cooling assembly can be realized on one side.

[0074] Each heat exchanger 30 extends in the vertical direction and is sequentially provided with a heat exchange part 31 and a liquid supplementing part 32 from bottom to top, the cooling liquid conveying member is lower than the liquid outlet 321, so that the liquid supplementing part 32 is located at the highest position of the liquid path and can realize the automatic liquid supplementing function to the liquid supplementing port 51 under the action of gravity, wherein the liquid supplementing part 32 is supported by the structure of the heat exchange part 31, without the need to set a separate support structure, thereby saving the cost and avoiding the adverse effect of the support structure at other positions on the over-ventilation 3122 of the heat exchange part 31, especially, the structure of the heat exchange part 31 in the technical solution is inclined relative to the first direction, under the condition that the length of the accommodating cavity 10A is constant, the inclined arrangement of the heat exchange part 31 makes it have a longer length, so that the liquid supplementing part 32 also has a longer length, when the height of the accommodating cavity 10A is constant, this arrangement makes it only need to slightly reduce the height of the heat exchange part 31 to set the liquid supplementing part 32 thereon, and the capacity of the liquid supplementing part 32 is larger, so that there is sufficient cooling liquid in the liquid supplementing part 32 to supplement, thereby reducing the liquid supplementing frequency of the liquid supplementing part 32; more preferably, the liquid supplementing part 32 is located above the heat exchange part 31, so that the liquid supplementing port of the liquid supplementing part 32 is located on the outside, which is convenient for liquid supplementing operation; in addition, heat exchange can be performed between the heat exchange part 31 and the liquid supplementing part 32, thereby improving the heat exchange efficiency of the heat exchange part 31.

[0075] In the embodiment, when the pipeline pressure of the cooling liquid conveying member is relatively large, the pressure of the pipeline of the cooling liquid conveying member can flow to the liquid supplementing part 32, the liquid level of the liquid supplementing part 32 rises and squeezes the gas above the liquid, so that the pressure relief valve of the expansion cover 33 opens, that is, the pressure relief valve on the expansion cover 33 can realize the pressure relief of the pipeline of the cooling liquid conveying member, to prevent the pipeline pressure of the cooling liquid conveying member from being too large, when the pressure of the pipeline of the cooling liquid conveying member is relatively small, the liquid supplementing part 32 can supplement liquid to the liquid supplementing port under the action of gravity, so that the liquid supplementing part 32 integrates the functions of the liquid supplementing tank and the expansion tank, to ensure that the pipeline of the cooling liquid conveying member operates under a relatively stable pressure, thereby without the need to set an expansion tank in the liquid cooling assembly, to reduce the volume of the liquid cooling assembly, so that the structure of the liquid cooling assembly is compact and simple. The two liquid supplementing parts 32 are connected in series, to further increase the capacity of the liquid supplementing part 32 and reduce the liquid supplementing frequency of the liquid supplementing part 32, so that the operation is simpler. It should be understood that when the heater heats the liquid supplementing part 32, the heating temperature should be controlled to make the maximum pressure generated above the liquid in the liquid supplementing part 32 smaller than the expansion pressure at which the pressure relief valve of the expansion cover 33 opens.

[0076] In the embodiment, the expansion cover 33 is arranged close to the angle end of the two heat exchangers 30. On the one hand, it is convenient to perform the liquid supplementing operation by opening the expansion cover 33. On the other hand, the expansion cover 33 is away from the pump 40. Since the liquid pressure changes greatly near the position of the pump 40, the pump 40 is easy to affect the pressure of the liquid supplementing part 32. Therefore, the expansion cover 33 is away from the pump 40, so that the expansion cover 33 is not interfered by the pump 40, thereby ensuring the stable implementation of the expansion function of the liquid supplementing part 32.

[0077] In the embodiment, the air inlet 111 of the accommodating cavity 10A is arranged on the side of the accommodating cavity 10A, and the air outlet 101 is arranged on the top of the accommodating cavity 10A. The hot air density is small, so that the hot air flow discharged from the top of the accommodating cavity 10A mainly flows upward and will not flow downward, thereby avoiding the disturbance of the hot air flow to the air inlets 111 of the downstream electrical devices. When the air outlet 101 is arranged on the top, in the conventional heat exchange device 20, the two heat exchange parts 31 are V-shaped and open upward, the fan is arranged above the area between the two heat exchange parts 31, the heat exchange parts 31 are inclined relative to the vertical direction, and the air duct in the heat exchange part 31 is also inclined relative to the vertical direction. After the fan works, the air flow changes the movement direction after passing through the air duct 3122, and the air flow of the two heat exchange parts 31 blows between them. Therefore, the sand is easy to accumulate in the inner and outer angles of the bottom of the two heat exchange parts 31 and in the air duct in the heat exchange part 31 under the action of gravity and air flow. After long-term operation, the air resistance is large, which greatly affects the heat exchange efficiency. In the technical solution, the structure of the heat exchange part 31 is arranged to make each air duct 3122 pass air along the horizontal direction. Therefore, the movement direction of the air flow blowing through the air duct 3122 is basically unchanged, the resistance in the air duct 3122 is small, and the accumulated sand in the air duct 3122 can be directly blown away by the air flow introduced from the air inlet 111. Since the opening formed by the angles of the two heat exchange parts 31 is horizontally oriented, the sand is not easy to accumulate at the angles of the two heat exchange parts 31. At the same time, the air duct 3122 cools the cooling liquid flow channel 3121. The exhaust fan 102 is arranged at the air outlet 101 to drive the air flow to flow from the air inlet 111, the first air inlet 131, the second air inlet 141, through the air duct 3122 to the air outlet 101. Figure 4 In the embodiment, the projection of the exhaust fan 102 along the vertical direction is spaced apart from the two heat exchangers 30 along the first direction, thereby ensuring that the air flow completely flows through the air duct 3122 of the heat exchanger 30. The arrangement of the first air inlet 131 and the second air inlet 141 facilitates faster removal of the heat of the cooling liquid flow channel of the two heat exchangers 30, thereby improving the heat exchange efficiency of the heat exchanger 30.

[0078] Referring to Figure 3 The heat generating assembly 60 is arranged in the air passing cavity and includes a liquid cooling plate 61 and an electrical assembly 62. The liquid cooling plate 61 is in communication with the cooling liquid conveying member to dissipate heat for at least part of the electrical assembly 62.

[0079] The heat dissipation cavity 10B is located below the accommodating cavity 10A. The electrical components 62 in the heat dissipation cavity 10B can be at least partially cooled by liquid cooling. On the one hand, liquid cooling is easier to control and has high cooling efficiency compared to air cooling. On the other hand, the heat dissipation cavity 10B can form a relatively closed structure, thereby improving the protection of the heat dissipation cavity 10B. The liquid cooling component is arranged in the accommodating cavity 10A at the top. When the liquid cooling component is cooled by air cooling, the air inlet 111 of the accommodating cavity 10A is also located at the top. The air inlet 111 is far away from the ground and thus has a low air inlet temperature, so that the liquid cooling component has high cooling efficiency, thereby ensuring that the electrical components 62 have high cooling efficiency. Since the liquid cooling component does not have water inflow concerns, the air outlet 101 can be provided on the top of the cabinet 10, thereby reducing the heat flow disturbance to downstream cabinets when multiple cabinets are used in parallel. Even if the heat flow flows out from the side of the top of the cabinet 10, the hot air has a small density and is less likely to affect the downstream cabinets. Since the liquid cooling component is arranged at the top, the side of the cabinet 10 is not occupied, thereby facilitating the parallel use of multiple cabinets or the side-by-side use in the horizontal direction. The side walls of the cabinet 10 other than the first side wall 11 and the second side wall 12, i.e., the third side wall 13 and the fourth side wall 14, do not need air inlet and outlet and do not need maintenance, thereby allowing the side walls to be used for parallel cabinets with other cabinets 10 without affecting the operation, cooling, and maintenance of the cabinets themselves. When multiple cabinets are used in parallel in the second direction, only the first air inlet 131 and the second air inlet 141 of the outermost cabinet can be air inlets. Due to the air pressure, the first air inlet 131 and the second air inlet 141 of the cabinet located in the middle do not allow air inflow.

[0080] Embodiment 2

[0081] Embodiment 2 is basically the same as Embodiment 1, except that the heat exchange part 31 and the liquid supplementing part 32 are integrally formed, and there is no heat conduction sheet 34 between the heat exchange part 31 and the liquid supplementing part 32. Integrally forming the heat exchange part 31 and the liquid supplementing part 32 is simpler to process, and on the other hand, since the heat exchange part 31 is generally made of a material that easily conducts heat, the above arrangement also makes the heat exchange efficiency of the heat exchange part 31 and the liquid supplementing part 32 good.

[0082] Embodiment 3

[0083] Embodiment 3 is basically the same as Embodiment 1, except that, as shown in Figure 8 , the air passage 3122 at least includes a first air passage 3123 close to the liquid supplementing part 32 and a second air passage 3124 away from the liquid supplementing part 32, and the air passage area of the first air passage 3123 is smaller than that of the second air passage 3124. In other embodiments, the air passage area of the air passage 3122 can also gradually increase in the direction away from the liquid supplementing part 32.

[0084] It should be understood that, after the liquid cooling assembly is normally operated, the heater generally does not heat, and thus the liquid temperature of the liquid supplementing part 32 is basically consistent with the ambient temperature. Since the first air passing channel 3123 is close to the liquid supplementing part 32, the first air passing channel 3123 can dissipate heat by using the heat exchange of the liquid supplementing part 32. The uppermost cooling liquid flow channel 3121 is adapted to exchange heat with the liquid supplementing part 32, and thus the first air passing channel 3123 close to the liquid supplementing part 32 can also dissipate heat by using the heat exchange of the liquid supplementing part 32. Therefore, the heat dissipation efficiency of the first air passing channel 3123 is superior to that of the second air passing channel 3124. On this basis, the air passing area of the first air passing channel 3123 is set to be smaller than that of the second air passing channel 3124, so that the first air passing channel 3123 and the second air passing channel 3124 both have high heat dissipation efficiency, thereby improving the heat dissipation efficiency of the heat exchange part 31 as a whole. In actual application, the two heat exchange parts 31 are mirror-symmetrical about a plane parallel to the first direction and the vertical direction.

[0085] Embodiment 4

[0086] Embodiment 4 is basically the same as Embodiment 3, except that the heat exchange part 31 and the liquid supplementing part 32 are integrally formed, and there is no heat conduction sheet 34 between the heat exchange part 31 and the liquid supplementing part 32. Integrally forming the heat exchange part 31 and the liquid supplementing part 32 is simpler in processing, and on the other hand, since the heat exchange part 31 is generally made of a material easy to conduct heat, the above setting also makes the heat exchange efficiency of the heat exchange part 31 and the liquid supplementing part 32 good.

[0087] Embodiment 5

[0088] Embodiment 5 is basically the same as Embodiment 3, see Figure 9 , except that the two heat exchange parts 31 are connected in parallel, the structure of the heat exchange part 31 is different, the heat exchange part 31 is sequentially provided with a liquid returning part 311, a to-be-cooled part 312 and a liquid supplying part 313 from top to bottom, and the cooling liquid flow channels 3121 and the air passing channels 3122 are alternately arranged on the heat exchange part 31 along the length direction of the heat exchange part 31, each cooling liquid flow channel and each air passing channel 3122 extend along the vertical direction and form the to-be-cooled part 312; the upper and lower ends of the heat exchanger 30 are respectively provided with the liquid returning part 311 and the liquid supplying part 313 which are in communication with each cooling liquid flow channel, so that the heat exchange part 31 is sequentially provided with the liquid returning part 311, the to-be-cooled part 312 and the liquid supplying part 313 from top to bottom, the liquid returning part 311 extends along the horizontal direction and is provided with a liquid returning end at the end close to the opening end of the included angle of the two heat exchangers 30, and the two liquid returning ends are connected in parallel to form the liquid returning port 315; the liquid supplying part 313 extends along the horizontal direction and is provided with a liquid supplying end at the end close to the opening end of the included angle of the two heat exchangers 30, and the two liquid supplying ends are connected in parallel to form the liquid supplying port 314; the liquid returning part 311 is adapted to exchange heat with the liquid supplementing part 32.

[0089] Since the pump 40 is suitable for delivering hot liquid to the back liquid end and recovering cold liquid from the supply end, the temperature of the back liquid part 311 is high, and the back liquid part 311 can be used to heat the liquid supplement part 32. Therefore, if the liquid cooling assembly is always operated in a low temperature environment after the pump 40 is normally operated, the heating of the liquid supplement part 32 can be realized through the heat exchange between the back liquid part 311 and the liquid supplement part 32, so as to ensure that the pressure of the liquid cooling pipeline 50 can reach the set value when the liquid cooling assembly is located in a low temperature condition, thereby ensuring the normal operation of the pump 40. Therefore, in this implementation condition, the heater can be turned off or the energy consumption of the heater can be reduced, thereby saving energy consumption. In the normal operation condition after the pump 40 is normally started, the heater generally does not heat, so the temperature of the liquid in the liquid supplement part 32 is basically consistent with the ambient temperature, and the heat of the back liquid part 311 can be quickly taken away through the heat exchange of the liquid supplement part 32, thereby compensating for the loss of the heat exchange efficiency of the heat exchange part 31. In the scheme, the two heat exchange parts 31 are connected in parallel, that is, the back liquid part 311 of each heat exchanger 30 is the hottest liquid just recovered (the temperature difference between the internal liquid of the heat exchange part and the external cold air is the largest, and the heat exchange effect is the best), and only half of the total flow of the system is on each heat exchange part 31, which greatly reduces the flow resistance of the system, not only increases the heat exchange efficiency of the heat exchange part 31, but also reduces the flow resistance of the system, and more preferably, the heat exchange efficiency between the back liquid part 311 and the liquid supplement part 32 is good.

[0090] The above description and embodiment of the application are used to explain the protection scope of the application, but do not constitute a limitation on the protection scope of the application. Through the inspiration of the application or the above embodiment, the modification, equivalent replacement or other improvement of the embodiment of the application or part of the technical features can be obtained by combining the common knowledge, the ordinary technical knowledge in the field and / or the prior art through logical analysis, reasoning or limited test, which should be included in the protection scope of the application.

Claims

1. A liquid cooling assembly for placement within a cabinet (10), characterized in that, include The liquid cooling pipe (50) is provided with a liquid replenishment port (51), a liquid inlet end and a liquid outlet end; A pump (40) is connected in series with the liquid cooling pipe (50) to allow the coolant in the liquid cooling pipe (50) to flow from the inlet end to the outlet end. Its input end is connected to the replenishment port (51), and its input end is also equipped with a pressure sensor. A replenishment tank, located at the highest point of the liquid path of the liquid cooling pipe (50), is connected to the replenishment port (51) to replenish the liquid cooling pipe (50) under gravity. The distance between the highest water level of the liquid in the tank and its top wall is greater than a first value; and A heater, placed inside the replenishment tank, is adapted to heat the liquid or air in the replenishment tank until the pressure reaches the set value when the pressure value detected by the pressure sensor is less than a set value. The liquid cooling assembly includes a heat exchange device (20), which is provided with a heat exchanger (30). The heat exchanger (30) extends vertically and is provided with a heat exchange section (31) and a liquid replenishment section (32) from bottom to top. The heat exchange section (31) is provided with a return liquid section (311), a section to be cooled (312), and a liquid supply section (313) from top to bottom. The return liquid section (311) is provided with a return liquid end, and the liquid supply section (313) is provided with a supply liquid end. The section to be cooled (312) is provided with a plurality of coolant flow channels (31) communicating with the return liquid section (311) and the liquid supply section (313). 21) a channel and an air duct (3122) for heat exchange of the coolant flow channel (3121); the heat exchange section (31) is connected in series with the liquid cooling pipe (50) through the liquid supply end and the liquid return end, and the pump (40) is also adapted to drive the coolant from the liquid inlet end, the liquid return end, the liquid supply end to the liquid outlet end; the liquid return section (311) is adjacent to the liquid replenishment section (32) to exchange heat, and the liquid replenishment section (32) forms the liquid replenishment tank; the heat exchange section (31) and the liquid replenishment section (32) are integrally formed, and the projection of the liquid replenishment section (32) in the vertical direction in each heat exchange unit covers the heat exchange section (31).

2. The liquid cooling assembly as described in claim 1, characterized in that, The cabinet (10) is provided with a accommodating cavity (10A), the liquid cooling component is placed in the accommodating cavity (10A), the side of the accommodating cavity (10A) is provided with an air inlet (111) in a horizontal direction, and the top of the cavity is provided with an air outlet (101). The heat exchange device (20) includes two heat exchangers (30) arranged at an angle. One end of the two heat exchangers (30) intersects each other along a horizontal first direction, and the other end is far away from each other to form an opening. The outer surfaces of the two heat exchangers (30) cooperate with the cavity wall of the accommodating cavity (10A) to form an accommodating space (01) covering the angled area between the two heat exchangers (30). Two heat exchange sections (31) are connected in parallel. The liquid return section (311) extends horizontally and has a liquid return end at the end near the opening end of the angle between the two heat exchangers (30). The two liquid return ends are connected in parallel to form a liquid return port (315). The liquid supply section (313) extends horizontally and has a liquid supply end at the end near the opening end of the angle between the two heat exchangers (30). The two liquid supply ends are connected in parallel to form a liquid supply port (314). The coolant flow channel (3121) and the air passage (3122) are alternately arranged on each heat exchange section (31) along its length direction. Each air passage (3122) and each coolant flow channel (3121) extend vertically. The two replenishment sections (32) together form a replenishment unit, and the replenishment unit is provided with a liquid outlet (321) in the accommodating space (01); The pump (40) and the liquid cooling pipe (50) are both placed in the accommodating space (01). The pump (40) is adapted to drive the coolant to flow from the inlet end, the return port (315), the supply port (314) to the outlet end.

3. The liquid cooling assembly as described in claim 1, characterized in that, It also includes a heat exchange device (20); the cabinet (10) is provided with a receiving cavity (10A), and the liquid cooling assembly is placed in the receiving cavity (10A); The heat exchange device (20) is provided with two heat exchangers (30) arranged at an angle. One end of the two heat exchangers (30) intersects each other along a horizontal first direction, and the other end is far apart to form an opening. The outer surfaces of the two heat exchangers (30) cooperate with the cavity wall of the accommodating cavity (10A) to form an accommodating space (01) covering the angled area between the two heat exchangers (30). Each heat exchanger (30) extends vertically and is provided with a heat exchange section (31) and a liquid replenishment section (32) from bottom to top. (31) Includes multiple coolant flow channels (3121) and an air duct (3122) for heat exchange of the coolant flow channels (3121); two heat exchange units (31) together form a heat exchange unit, the heat exchange unit is provided with a liquid supply port (314) and a liquid return port (315) in the accommodating space (01); two liquid replenishment units (32) together form a liquid replenishment unit, the liquid replenishment unit is provided with a liquid outlet (321) in the accommodating space (01); the liquid replenishment unit (32) forms the liquid replenishment tank; The pump (40) is also adapted to drive the coolant from the inlet end, the return port (315), the supply port (314) to the outlet end; The pump (40) and the liquid cooling pipe (50) are both placed in the accommodating space (01).

4. A liquid cooling assembly as described in claim 3, characterized in that, The accommodating cavity (10A) has an air inlet (111) on its side in a horizontal direction and an air outlet (101) on its top. The heat exchange section (31) is provided with alternating coolant flow channels (3121) and air passages (3122) along its upper vertical direction. Each coolant flow channel (3121) and each air passage (3122) extends in the horizontal direction. The uppermost coolant flow channel (3121) is adapted to exchange heat with the replenishment section (32). The air passage (3122) includes at least a first air passage (3123) close to the replenishment section (32) and a second air passage (3124) far from the replenishment section (32). The air passage area of ​​the first air passage (3123) is smaller than that of the second air passage (3124). The heat exchange section (31) has a return liquid section (311) and a supply liquid section (313) extending vertically at both ends along its length. The return liquid section (311) has a return liquid end, and the supply liquid section (313) has a supply liquid end. The two heat exchange sections (31) are connected in series. The return liquid section (311) of one heat exchange section (31) is located at the open end of the two heat exchangers (30), and the supply liquid section (313) of the other heat exchange section (31) is located at the open end of the two heat exchangers (30). The return liquid end of the return liquid section (311) located at the open end of the two heat exchangers (30) forms the return liquid port (315), and the supply liquid end of the supply liquid section (313) located at the open end of the two heat exchangers (30) forms the supply liquid port (314). Each coolant flow channel (3121) is connected to the return liquid section (311) and the supply liquid section (313).

5. The liquid cooling assembly as described in any one of claims 1-4, characterized in that, A heat-conducting plate (34) is provided between the heat exchange section (31) and the liquid replenishment section (32), and the projection of the liquid replenishment section (32) in the vertical direction in each heat exchange unit covers the heat exchange section (31).

6. A liquid cooling assembly as described in any one of claims 2-3, characterized in that, Two replenishment sections (32) are connected in series. The outlet (321) is formed on the end face of one of the two heat exchangers (30) near the opening end of the replenishment section (32). One of the replenishment sections (32) is provided with an expansion cap (33) and a pressure relief valve is provided on the expansion cap (33).

7. A liquid cooling assembly as described in claim 6, characterized in that, The expansion cap (33) is located near the angled end of the two heat exchangers (30), and the liquid replenishment section (32) is provided with a viewing window (322) near the angled end of the two heat exchangers (30) so that the liquid level of the liquid replenishment section (32) can be observed; the two liquid replenishment sections (32) are also provided with a baffle plate (323) connected to the top wall of the accommodating cavity on the side that is close to each other.

8. A server rack, characterized in that, The device includes a cabinet (10), a liquid cooling component and a heating component (60) as described in any one of claims 1-7; the top of the cabinet (10) is provided with a receiving cavity, and a relatively sealed heat dissipation cavity is provided below the receiving cavity; the side of the receiving cavity is provided with an air inlet (111) opened in the horizontal direction, and the top is provided with an air outlet (101); the liquid cooling component is placed in the receiving cavity; the heating component (60) is placed in the heat dissipation cavity and includes a liquid cooling plate (61) and an electrical component (62), the liquid cooling plate (61) is connected to the liquid cooling pipe (50) to dissipate heat from at least part of the electrical component (62).

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