CN117596839A

CN117596839A - Liquid cooling unit and cabinet

Info

Publication number: CN117596839A
Application number: CN202311557676.6A
Authority: CN
Inventors: 崔剑; 卢艺杰; 倪泽联
Original assignee: Xiamen Kehua Digital Energy Tech Co Ltd
Current assignee: Xiamen Kehua Digital Energy Tech Co Ltd
Priority date: 2023-11-21
Filing date: 2023-11-21
Publication date: 2024-02-23

Abstract

The invention discloses a liquid cooling unit and a cabinet, wherein the liquid cooling unit comprises a heat exchange device and a cooling liquid conveying part, the liquid cooling unit is provided with two heat exchangers which are arranged at an included angle, one ends of the two heat exchangers along a horizontal first direction are intersected with each other, the other ends of the two heat exchangers are far away from each other to form an opening, and the outer side surfaces of the two heat exchangers are matched with the cavity wall of a containing cavity to form a containing space; each heat exchanger extends along the vertical direction and is sequentially provided with a heat exchange part and a liquid supplementing part from bottom to top; the heat exchange unit is provided with a liquid supply port and a liquid return port in the accommodating space, and the liquid supplementing unit is provided with a liquid outlet in the accommodating space; the cooling liquid conveying part is arranged in the accommodating space and is lower than the liquid outlet, and is also provided with a liquid supplementing port communicated with the liquid outlet, so that the liquid supplementing part is suitable for supplementing cooling liquid to the liquid supplementing port under the action of gravity. The liquid supplementing device is simple in structure, small in size, low in cost, capable of automatically supplementing liquid in the absence of liquid, simple in liquid supplementing operation, convenient to install and maintain and high in heat exchange efficiency.

Description

Liquid cooling unit and cabinet

Technical Field

The invention relates to the technical field of liquid cooling, in particular to a liquid cooling unit and a cabinet.

Background

The liquid cooling system has strong heat exchange capability and wide application in various fields, and for cooling liquid circulation, the cooling liquid inevitably evaporates and leaks along with time in the operation process, partial gas residues exist during vacuumizing, and in order to ensure the cooling effect, degassing and liquid supplementing are needed timely, so that a water tank, a water supplementing pump and a one-way valve are arranged in the liquid cooling system to supplement liquid to a pipeline. The existing liquid cooling system has the defects of complex structure, large volume, heavy weight and high cost, so that the power density cannot be improved, the system is difficult to maintain, the liquid supplementing pump needs to be maintained regularly, and the liquid supplementing water tank needs to be subjected to frequent liquid supplementing operation if the capacity of the liquid supplementing water tank is not large enough. The fluid replacement signal is usually sent from a system low-pressure alarm, and then the fluid replacement pump can perform fluid replacement operation. However, when the system is in operation for a long time, there is a blockage, for example, the filter is dirty, the pressure drop of the filter part becomes large, for example, the pressure of the system is higher, so that a detection error is caused, that is, even if the system is out of liquid, a low-pressure alarm may not be reported, and thus automatic liquid supplementing cannot be realized. Moreover, the internal space of the system is limited, the liquid filling port of the water tank is positioned in the system, and liquid supplementing is difficult to operate.

In addition, in the conventional heat exchange device, two heat exchangers are V-shaped and the opening is upwards, the fan is arranged above the area between the two heat exchangers, the heat exchangers are inclined relative to the vertical direction, the parts such as the cooling liquid flow channel and the pump are arranged on the outer sides of the two heat exchangers in consideration of installation and maintenance, and are arranged in the outer included angle area of the heat exchangers, but the arrangement of the structure enables the parts such as the cooling liquid flow channel and the pump to be dispersed in the outer side area or the end area of the two heat exchangers, operators are required to constantly change positions during maintenance, time and labor are wasted, and in addition, the outer included angle area of the heat exchangers is shielded, so that the air inlet quantity of the bottom of the heat exchanger is greatly reduced, and the heat exchange efficiency is greatly influenced.

Disclosure of Invention

The invention aims to overcome the defects or problems in the background art and provide the liquid cooling unit and the cabinet, wherein the liquid cooling unit has the advantages of simple structure, small volume, low cost, automatic liquid supplementing operation in the absence of liquid, convenience in installation and maintenance and high heat exchange efficiency.

To achieve the above object, the present invention and its related embodiments adopt the following technical solutions, but are not limited to the following solutions:

the first technical scheme and related embodiments relate to a liquid cooling unit, it is used for placing in the holding cavity, characterized by, it includes the heat exchanger unit, it has two heat exchangers that set up in the included angle, one end of two heat exchangers along horizontal first direction intersects each other, another end keep away from each other and form the opening, the outer side of two heat exchangers cooperates with cavity wall of the holding cavity to form the holding space to cover the included angle area between two heat exchangers; each heat exchanger extends along 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 comprises a plurality of cooling liquid flow channels and an air passage for exchanging heat to 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 accommodating space, the two liquid supplementing parts jointly form a liquid supplementing unit, and the liquid supplementing unit is provided with a liquid outlet in the accommodating space; and the cooling liquid conveying part is arranged in the accommodating space and is lower than the liquid outlet, is communicated with the liquid supply port and the liquid return port to drive cooling liquid to flow from the liquid return port to the liquid supply port, and is also provided with a liquid supplementing port communicated with the liquid outlet, so that the liquid supplementing part is suitable for supplementing cooling liquid to the liquid supplementing port under the action of gravity.

The second technical scheme is based on the first technical scheme, and is a preferred embodiment of the first technical scheme, wherein the liquid supply port, the liquid return port and the liquid outlet are all close to the open ends of the two heat exchangers.

The third technical scheme is based on the second technical scheme, and is a preferred embodiment of the second technical scheme, wherein two liquid supplementing parts are connected in series, the liquid outlet is formed on one end face of the liquid supplementing parts, one liquid supplementing part is provided with an expansion cover, the expansion cover is provided with a pressure relief valve, and the distance between the highest water level of liquid in the liquid supplementing part and the top wall of the liquid supplementing part is larger than a first value.

The fourth technical solution is based on the third technical solution, and is a preferred embodiment of the third technical solution, wherein the heat exchange portion and the liquid supplementing portion are integrally formed, and a projection of the liquid supplementing portion in each heat exchanger along a vertical direction covers the heat exchange portion; the heat exchange device is also provided with radiating fins in the air passage.

The fifth technical scheme is based on the third technical scheme, and is a preferred embodiment of the third technical scheme, wherein the projection of the liquid supplementing part in each heat exchanger along the vertical direction covers the heat exchanging part, a heat conducting fin is arranged between the heat exchanging part and the liquid supplementing part, and the heat exchanging device is further provided with heat radiating fins in the air passage.

A sixth technical solution is based on the fourth or fifth technical solution, and is a preferred embodiment of the fourth or fifth technical solution, wherein an air inlet opening along a horizontal direction is provided at a side portion of the accommodating cavity, and an air outlet is provided at a top portion of the accommodating cavity; the cooling liquid flow channels and the air passing channels are alternately distributed on the heat exchange part along the vertical direction, and each cooling liquid flow channel and each air passing channel extend along the horizontal direction; the cooling liquid flow channel positioned at the uppermost part is suitable for exchanging heat with the liquid supplementing part, the air passage at least comprises a first air passage close to the liquid supplementing part and a second air passage far away from the liquid supplementing part, and the air passage area of the first air passage is smaller than that of the second air passage.

A seventh technical solution is based on the sixth technical solution, and is a preferred embodiment of the sixth technical solution, wherein the liquid replenishing portion is provided with a heater, the cooling liquid conveying member includes a liquid cooling pipeline and a pump, the pump is connected in series with the liquid cooling pipeline to drive the cooling liquid to flow from the liquid return port to the liquid supply port, the liquid replenishing port is arranged on the liquid cooling pipeline and is close to the input end of the pump, and the heater is suitable for heating the liquid or air in the liquid replenishing portion before the pump is started; 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 which extend along the 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 positioned at the open ends of the two heat exchangers, and the liquid supply part of the other heat exchange part is positioned at the open ends of the two heat exchangers; the liquid return ends of the liquid return parts positioned at the opening ends of the two heat exchangers form the liquid return opening, and the liquid supply ends of the liquid supply parts positioned at the opening ends of the two heat exchangers form the liquid supply opening; each cooling liquid flow passage is communicated with the liquid return part and the liquid supply part.

An eighth technical solution is based on the fourth or fifth technical solution, and is a preferred embodiment of the fourth or fifth technical solution, wherein an air inlet opening along a horizontal direction is provided at a side portion of the accommodating cavity, and an air outlet is provided at a top portion of the accommodating cavity; the liquid supplementing part is internally provided with a heater, the cooling liquid conveying part comprises a liquid cooling pipeline and a pump, the pump is connected in series on the liquid cooling pipeline to drive cooling liquid to flow from a liquid return port to a liquid supply port, the liquid supplementing port is arranged on the liquid cooling pipeline and is close to the input end of the pump, and the heater is suitable for heating liquid or air in the liquid supplementing part before the pump is started; the two heat exchange parts are connected in parallel, the cooling liquid flow channels and the air passing channels are alternately distributed on the heat exchange parts along the length direction of the heat exchange parts, and each cooling liquid flow channel and each air passing channel extend along the vertical direction; the upper end and the lower end of the heat exchanger are respectively provided with a liquid return part and a liquid supply part which are communicated with each cooling liquid channel, the liquid return part extends along the horizontal direction, the end part close to the opening end of the included angle of the two heat exchangers is provided with a liquid return end, the two liquid return ends are connected in parallel to form the liquid return opening, the liquid supply part extends along the horizontal direction, the end part close to the opening end of the included angle of the two heat exchangers is provided with a liquid supply end, and the two liquid supply ends are connected in parallel to form the liquid supply opening; the liquid return part is adjacent to the liquid supplementing part and is suitable for exchanging heat with the liquid supplementing part.

The ninth technical solution is based on the third technical solution, and is a preferred embodiment of the third technical solution, wherein the expansion cover is disposed near an included angle end of the two heat exchangers, and the liquid supplementing portion is disposed near an included angle end of the two heat exchangers and is provided with a visual window so that a liquid level of the liquid supplementing portion is suitable for being observed; and a wind isolation plate connected with the top wall of the accommodating cavity is further arranged at one side of the two liquid supplementing parts, which is close to each other.

A tenth technical means and preferred embodiments thereof relate to a cabinet comprising a cabinet body, the liquid cooling unit and the heat generating assembly as set forth in any one of the first to ninth technical means; the top of the cabinet body is provided with a containing cavity, and a relatively airtight heat dissipation cavity is arranged below the containing cavity; the side part of the accommodating cavity is provided with an air inlet which is arranged along the horizontal direction, and the top part of the accommodating cavity is provided with an air outlet; the liquid cooling unit is arranged in the accommodating cavity; the heating component is arranged in the heat dissipation cavity and comprises a liquid cooling plate and an electric component, and the liquid cooling plate is communicated with the cooling liquid conveying piece to dissipate heat of at least part of the electric component.

As can be seen from the above description of the present invention and the specific embodiments thereof, compared with the prior art, the technical solution of the present invention and the related embodiments thereof have the following beneficial effects due to the following technical means:

In the first technical solution and related embodiments, the two heat exchangers are disposed at an included angle, one ends of the two heat exchangers along the first direction intersect each other, the other ends of the two heat exchangers are far away from each other to form an opening, and the outer sides of the two heat exchangers are matched with the cavity wall of the accommodating cavity to form an accommodating space covering the included angle area between the two heat exchangers, so that the cooling liquid conveying member can be placed in the accommodating space, and the space formed by the two heat exchangers and the accommodating cavity is fully utilized. When the two heat exchange parts are connected in series, the liquid supply port and the liquid return port are respectively formed by the liquid supply end of one heat exchange part and the liquid return end of the other heat exchange part, and when the two heat exchange parts are connected in parallel, the liquid supply port and the liquid return port are respectively formed by the liquid supply ends of the two heat exchange parts and the liquid return ends of the two heat exchange parts in parallel; when the two liquid supplementing parts are connected in series, the liquid outlet is formed by the liquid outlet end of one liquid supplementing part, 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 in parallel;

the liquid supply port and the liquid return port are positioned in the accommodating space, and the cooling liquid conveying member is positioned in the accommodating space with the communicating pipelines of the liquid supply port and the liquid return port, and the liquid outlet is positioned in the accommodating space with the communicating pipeline of the liquid outlet, so that the cooling liquid conveying member can be placed in the accommodating space, the cooling liquid conveying member can not influence the air inlet of the air passage of the heat exchange part, and the cooling liquid conveying member can be maintained at one side of the accommodating cavity, so that the liquid cooling unit has higher heat exchange efficiency and is convenient to install and maintain; the two heat exchange portions are arranged at an included angle, so that the heat exchange portions have larger wind passing area and are small in size, and the heat exchange efficiency of the heat exchange portions is further improved.

Each heat exchanger is provided with a heat exchange part and a liquid supplementing part in sequence from bottom to top along the vertical direction, the cooling liquid conveying part is lower than the liquid outlet, so that the liquid supplementing part is positioned at the highest position of the liquid path, and an automatic liquid supplementing function can be realized for the liquid supplementing port under the action of gravity; more preferably, the liquid supplementing part is positioned above the heat exchange part, so that a liquid adding opening of the liquid supplementing part is positioned at the outer side, and liquid adding operation is facilitated; in addition, heat exchange can be carried out between the heat exchange part and the liquid supplementing part, so that the heat exchange efficiency of the heat exchange part is improved.

It can be seen that, the liquid cooling unit of this scheme not only is convenient for install and maintain, and the heat exchange efficiency of heat transfer portion is high, and the structure is ingenious, need not to set up unnecessary structure and can realize the automatic fluid infusion of fluid infusion portion, and the fluid infusion operation of fluid infusion portion is simple, the fluid infusion number of times is few, and still can assist the heat transfer between fluid infusion portion and the heat transfer portion.

In the second technical scheme and related embodiments, the liquid supply port, the liquid return port and the liquid outlet are all close to the open ends of the two heat exchangers, so that maintenance of the cooling liquid conveying member, installation and maintenance of the liquid outlet and liquid supplementing port communication pipelines, and installation and maintenance of the cooling liquid conveying member, the liquid supply port and the liquid return port are concentrated on the open sides of the two heat exchangers, and the installation and maintenance of the liquid cooling unit are conveniently realized on one side.

In the third technical scheme and related embodiments, two liquid supplementing parts are connected in series, and a liquid outlet is formed on one end face of the liquid supplementing part, so that the installation and maintenance are further facilitated; one of the liquid supplementing parts is provided with an expansion cover, the expansion cover is provided with a pressure relief valve, and the distance between the highest water level of liquid in the liquid supplementing part and the top wall of the liquid supplementing part is larger than a first value, so that when the pipeline pressure of the cooling liquid conveying part is larger, the pressure of the pipeline of the cooling liquid conveying part can flow to the liquid supplementing part, the liquid level of the liquid supplementing part rises and extrudes gas above the liquid, the pressure relief valve of the expansion cover is opened, namely, the pressure relief valve on the expansion cover can realize the pressure relief of the pipeline of the cooling liquid conveying part, the pipeline pressure of the cooling liquid conveying part is prevented from being overlarge, and when the pressure of the pipeline of the cooling liquid conveying part is smaller, the liquid supplementing part can supplement liquid to the liquid supplementing position under the action of gravity, thereby the functions of a liquid supplementing water tank and the expansion tank are integrated, the pipeline of the cooling liquid conveying part is ensured to run under a relatively stable pressure, and the expansion tank is not required to be arranged in the liquid cooling unit, the volume of the liquid cooling unit is reduced, and the structure of the liquid cooling unit is compact and simple. The two liquid supplementing parts are connected in series, so that the capacity of the liquid supplementing part is further increased, the liquid supplementing times of the liquid supplementing part are reduced, and the operation is simpler.

In the fourth technical solution and related embodiments, when the height of the accommodating cavity is fixed, the liquid supplementing portion is disposed above the heat exchanging portion, which means that the height of the heat exchanging portion is reduced, and the heat exchanging efficiency of the heat exchanging portion is affected by the height of the heat exchanging portion, so that the heat exchanging portion and the liquid supplementing portion are integrally formed, on one hand, the processing is simpler, and on the other hand, the heat exchanging portion is generally made of a material which is easy to conduct heat, so that the heat exchanging efficiency of the heat exchanging portion and the liquid supplementing portion is good due to the arrangement; in addition, a heat radiating tooth plate is arranged between the air passing channels so as to further increase the heat exchange efficiency of the heat exchange part; the projection of the fluid infusion part along the vertical direction covers the heat exchange part, so that the fluid infusion part is ensured to have enough large volume and is convenient to process, the fluid infusion times are reduced, the fluid infusion part is in large-area contact with the heat exchange part, and the heat exchange efficiency is further improved.

In the fifth technical solution and related embodiments, when the height of the accommodating cavity is fixed, a liquid supplementing portion is disposed above the heat exchanging portion, which means that the height of the heat exchanging portion is reduced, and the heat exchanging efficiency of the heat exchanging portion is affected by the height of the heat exchanging portion, so that, on one hand, a heat conducting fin is disposed between the heat exchanging portion and the liquid supplementing portion to increase the heat exchanging efficiency between the heat exchanging portion and the liquid supplementing portion, and on the other hand, a heat dissipating tooth fin is disposed in the air passing duct of the liquid cooling unit to further increase the heat exchanging efficiency of the heat exchanging portion; the projection of the fluid infusion part along the vertical direction covers the heat exchange part, so that the fluid infusion part is ensured to have a large enough volume, the fluid infusion times are reduced, the fluid infusion part is contacted with the heat exchange part in a large area, and the heat exchange efficiency is further improved.

In the sixth technical solution and related embodiments, the air inlet of the accommodating cavity is disposed at a side portion of the accommodating cavity, and the air outlet is disposed at a top portion of the accommodating cavity, so that the hot air density is small, and hot air exhausted from the top portion of the accommodating cavity mainly flows upward, but does not flow downward, thereby avoiding heat flow disturbance to the air inlet of the downstream electrical device. 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, the air channel in the heat exchange part is inclined relative to the vertical direction, after the fan works, the movement direction of the air flow after passing through the air channel changes, the air flows of the two heat exchange parts blow between the two heat exchange parts, so sand is easy to accumulate at the inner included angle and the outer included angle of the bottoms of the two heat exchange parts and the air channel in the heat exchange parts under the action of gravity and the air flow, the wind resistance is large after long-term operation, and the heat exchange efficiency is greatly influenced.

The cooling liquid flow channel at the uppermost part is suitable for exchanging heat with the liquid supplementing part, so that the first air passage close to the liquid supplementing part can also utilize the heat exchange of the liquid supplementing part to dissipate heat, the heat dissipation efficiency of the first air passage is better than that of the second air passage, and the air passage area of the first air passage is smaller than that of the second air passage on the basis, so that the first air passage and the second air passage have higher heat dissipation efficiency, and the heat dissipation efficiency of the heat exchanging part is integrally improved.

In the seventh technical solution and related embodiments, since the pressure of the input end of the pump needs to reach a certain value when the pump is in a low-temperature environment or before the liquid cooling unit is operated, the pressure of the input end of the pump is small and is difficult to start, so that the pressure of the input end of the pump needs to be raised in the low-temperature environment or before the liquid cooling unit is operated. It should be understood that when the heater heats the fluid-filled portion, the heating temperature should be controlled so that the maximum pressure generated above the fluid of the fluid-filled portion is less than the expansion pressure at which the relief valve of the expansion cap opens. It should be understood that, after the liquid cooling unit normally operates, the heater is generally not heated, so that the liquid temperature of the liquid supplementing portion is basically consistent with the ambient temperature, and because in the sixth technical solution, the first air passage is close to the liquid supplementing portion, heat exchange of the liquid supplementing portion (the integrated forming of the fourth technical solution or the heat conducting fin of the fifth technical solution) can be utilized to dissipate heat, so that the temperature of the cooling liquid flow passage near the first air passage is lower than that of the cooling liquid flow passage near the second air passage, the air passing area of the first air passage is set to be smaller than that of the second air passage, and both the first air passage and the second air passage have higher heat dissipation efficiency, so that the heat dissipation efficiency of the heat exchange portion is improved as a whole. Wherein two heat exchange parts are connected in series, and water path connection is easy to realize.

In the eighth technical solution and related embodiments, the air inlet of the accommodating cavity is disposed at a side portion of the accommodating cavity, and the air outlet is disposed at a top portion of the accommodating cavity, so that the hot air density is small, and hot air exhausted from the top portion of the accommodating cavity mainly flows upward, but does not flow downward, thereby avoiding heat flow disturbance to the air inlet of the downstream electrical device. 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, the air channel in the heat exchange part is inclined relative to the vertical direction, after the fan works, the movement direction of the air flow after passing through the air channel changes, the air flows of the two heat exchange parts blow between the two heat exchange parts, so sand is easy to accumulate at the inner included angle and the outer included angle of the bottoms of the two heat exchange parts and the air channel in the heat exchange parts under the action of gravity and the air flow, the wind resistance is large after long-term operation, and the heat exchange efficiency is greatly influenced.

The pressure of the input end of the pump needs to reach a certain value when the pump operates, when the liquid cooling unit is in a low-temperature environment, the pressure of the input end of the pump is smaller and is difficult to start, so that the pressure of the input end of the pump needs to be raised in the low-temperature environment. Under the normal running condition after the pump is normally started, the heater is not heated, so that the liquid temperature of the liquid supplementing part is basically consistent with the ambient temperature, and the heat of the liquid returning part can be quickly taken away through the heat exchange of the liquid supplementing part, thereby compensating the heat exchange efficiency loss of the heat exchange part. In the scheme, the two heat exchange parts are connected in parallel, namely, 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 external cold air is the largest, and the heat exchange effect is the best), meanwhile, only half of the total flow of the system is arranged on each heat exchange part, so that the flow resistance of the system is greatly reduced, the heat exchange efficiency of the heat exchange part is increased, the flow resistance of the system is also reduced, and more preferably, the heat exchange efficiency between the liquid return part and the liquid supplementing part is good.

In the ninth technical solution and related embodiments, the expansion cover is disposed close to the end of the included angle between the two heat exchangers, so that on one hand, the operation of replenishing liquid is conveniently performed by opening the expansion cover, and on the other hand, the expansion cover is far away from the pump, and because the pressure of the liquid near the position where the pump is located is greatly changed, the pressure of the liquid replenishing portion is easily affected, so that the expansion cover is far away from the pump, the expansion cover is prevented from being interfered by the pump, and thus, the stable realization of the expansion function of the liquid replenishing portion is ensured. The liquid supplementing part is provided with a visual window at the end close to the included angle of the two heat exchangers so as to observe the liquid level of the liquid supplementing part, so that the liquid level in the liquid supplementing part can be observed through the visual window during liquid adding, and the control is more accurate; the side that two fluid infusion portions are close to each other still is equipped with the air baffle that meets with the roof of holding chamber, has avoided the windage to flow through the clearance between the roof of heat exchange portion and holding chamber and has caused the windage extravagant, and has guaranteed that most windage blows to heat exchange portion, has improved heat exchange efficiency.

In a tenth technical aspect and related embodiments, the present invention provides a cabinet having technical advantages of any one of the first to ninth technical aspects; the air-cooled type air conditioner comprises an air-cooled type air conditioner, a liquid cooling unit, a cooling unit and a cooling unit, wherein the air-cooled type air conditioner is arranged below the accommodating cavity, an electric component in the air-cooled type air conditioner can be at least partially cooled by the liquid cooling type air conditioner, on one hand, the liquid cooling type air conditioner is easier to control than the air cooling type air conditioner, and has high heat dissipation efficiency; because the liquid cooling unit has no water inlet concern, the air outlet can be formed in the top of the cabinet body, so that heat flow disturbance is not easy to be generated on a downstream cabinet when a plurality of cabinets are used in parallel, and even if heat flow flows out from the side surface of the top of the cabinet body, the influence on the downstream cabinet is not easy to be generated because of small hot air density; because the liquid cooling unit is arranged at the top, the side part of the cabinet body is unoccupied, and the parallel operation or the parallel operation along the horizontal direction of a plurality of cabinets is convenient.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the description of the embodiments below are briefly introduced, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic diagram of a cabinet according to embodiment 1 of the present invention;

fig. 2 is a schematic diagram of a cabinet according to embodiment 1 of the present invention;

fig. 3 is a schematic diagram III of a cabinet according to embodiment 1 of the present invention;

fig. 4 is a top view of the heat exchange device in the accommodating chamber according to embodiment 1 of the present invention;

FIG. 5 is a schematic diagram of a heat exchanger and a liquid cooling plate according to embodiment 1 of the present invention;

FIG. 6 is a schematic diagram II of a heat exchanger and a liquid cooling plate according to embodiment 1 of the present invention;

FIG. 7 is a side view of the heat exchange device of embodiment 1 of the present invention in the accommodating chamber, with the third side wall of the accommodating chamber hidden;

FIG. 8 is a schematic view of a heat exchanger according to embodiment 3 of the present invention;

fig. 9 is a schematic view of a heat exchanger according to embodiment 6 of the present invention.

The main reference numerals illustrate:

a cabinet 10; a first side wall 11; a second side wall 12; a third side wall 13; a fourth sidewall 14; an air inlet 111; an air outlet 101; an exhaust fan 102; a first air inlet 131; a second air inlet 141; a support plate 15; a partition plate 16; a housing chamber 10A; a heat dissipation chamber 10B; a wind passing chamber 10C; a heat exchange device 20; a heat exchanger 30; a heat exchanging section 31; a liquid return portion 311; a portion to be cooled 312; a coolant flow channel 3121; a passing air channel 3122; a first through air channel 3123; a second pass through air channel 3124; fin 3125; a liquid supply portion 313; a liquid supply port 314; a liquid return port 315; a liquid injection port 316; the accommodating space 01; a fluid supplementing part 32; a liquid outlet 321; a visual window 322; a wind shielding plate 323; an expansion cover 33; a heat conductive sheet 34; a pump 40; a liquid cooling conduit 50; a fluid supplementing port 51; a heat generating component 60; a liquid cooling plate 61; an electrical component 62.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. It is to be understood that the described embodiments are preferred embodiments of the invention and should not be taken as excluding other embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present invention without creative efforts, are within the protection scope of the present invention.

In the claims, specification and drawings hereof, unless explicitly defined otherwise, the terms "first," "second," or "third," etc. are used for distinguishing between different objects and not for describing a particular sequential order.

In the claims, specification and drawings of the present invention, unless explicitly defined otherwise, references to orientation or positional relationship such as the terms "center", "lateral", "longitudinal", "horizontal", "vertical", "top", "bottom", "inner", "outer", "upper", "lower", "front", "rear", "left", "right", "clockwise", "counterclockwise", etc. are based on the orientation and positional relationship shown in the drawings and are merely for convenience of description and to simplify the description, and do not indicate or imply that the apparatus or element referred to must have a particular orientation or be constructed and operated in a particular orientation, nor should it be construed as limiting the particular scope of the invention.

In the claims, specification and drawings of the present invention, unless explicitly defined otherwise, the term "fixedly connected" or "fixedly connected" should be construed broadly, i.e. any connection between them without a displacement relationship or a relative rotation relationship, that is to say includes non-detachably fixedly connected, integrally connected and fixedly connected by other means or elements.

In the claims, specification and drawings of the present invention, the terms "comprising," having, "and variations thereof as used herein, are intended to be" including but not limited to.

Example 1

Referring to fig. 1-3, fig. 1-3 illustrate a cabinet comprising a cabinet body 10, a liquid cooling unit, and a heat generating assembly 60.

Referring to fig. 1 to 4, the cabinet 10 has a rectangular parallelepiped shape, the cabinet 10 is provided with a first side wall 11 and a second side wall 12 parallel and opposite to each other in a first direction, and the cabinet 10 is provided with a third side wall 13 and a fourth side wall 14 parallel and opposite to each other in a second direction perpendicular to the first direction. The first direction is the up-down direction in fig. 4, and the second direction is the left-right direction in fig. 4.

In this embodiment, the cabinet body 10 is provided with a support plate 15 and a partition plate 16, referring to fig. 3, the support plate 15 divides the cabinet body 10 into an upper area and a lower area, the upper area forms a containing cavity 10A, the partition plate 16 divides the lower area into a middle area and a bottom area, the middle area forms a heat dissipation cavity 10B, the bottom area forms an air passing cavity 10C, that is, the top of the cabinet body 10 is provided with the containing cavity 10A, the bottom is provided with the air passing cavity 10C, the cabinet body 10 is provided with the heat dissipation cavity 10B between the containing cavity 10A and the air passing cavity 10C, and the heat dissipation cavity 10B is relatively airtight.

Referring to fig. 1-2, the accommodating cavity 10A is provided with an air inlet 111 along a first horizontal direction on the first side wall 11, an air outlet 101 is arranged at the top, and the air outlet 101 is close to the second side wall 12; the accommodating chamber 10A is further provided with a first secondary air inlet 131 and a second secondary air inlet 141 on the third sidewall 13 and the fourth sidewall 14, respectively.

In practical application, an air draft fan 102 is disposed at the air outlet 101.

The liquid cooling unit is arranged in the accommodating cavity 10A and comprises a heat exchange device 20 and a cooling liquid conveying member.

Referring to fig. 4, the heat exchange device 20 is provided with two heat exchangers 30 disposed at an included angle, one ends of the two heat exchangers 30 along a horizontal first direction intersect each other, the other ends are far away from each other to form an opening, outer sides of the two heat exchangers 30 are matched with a cavity wall of the accommodating cavity 10A to form an accommodating space 01 covering an included angle area between the two heat exchangers 30, and in fig. 4, a projection of the accommodating space 01 along a vertical direction is pentagonal. Referring to fig. 5 to 6, each heat exchanger 30 extends in the vertical direction and is provided with a heat exchanging portion 31 and a liquid replenishing portion 32 in order from bottom to top; the heat exchanging part 31 includes a plurality of coolant channels 3121 and a through-air channel 3122 for exchanging heat to the coolant channels 3121; the two heat exchange parts 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, the two liquid supplementing parts 32 together form a liquid supplementing unit, and the liquid supplementing unit is provided with a liquid outlet 321 in the accommodating space 01.

When the two heat exchange portions 31 are connected in series, the liquid supply port 314 and the liquid return port 315 are respectively formed by the liquid supply end of one heat exchange portion 31 and the liquid return end of the other heat exchange portion 31, and when the two heat exchange portions 31 are connected in parallel, the liquid supply port 314 and the liquid return port 315 are respectively formed by the liquid supply ends of the two heat exchange portions 31 and the liquid return ends of the two heat exchange portions in parallel; 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.

When the height of the accommodating chamber 10A is constant, the placement of the fluid replacement portion 32 above the heat exchange portion 31 also means that the height of the heat exchange portion 31 is reduced, and the placement of the fluid replacement portion 32 sacrifices the height of the heat exchange portion 31, so that the heat exchange efficiency of the heat exchange portion 31 is affected somewhat. The projection of the fluid infusion part 32 in each heat exchanger 30 along the vertical direction covers the heat exchange part 31 to ensure that the fluid infusion part 32 has a large enough volume, thereby reducing the fluid infusion times, and enabling the fluid infusion part 32 to be in large-area contact with the heat exchange part 31, and further improving the heat exchange efficiency. In fig. 4 to 7, the liquid replenishing portion 32 has a rectangular parallelepiped shape as a whole.

Specifically, the heat exchanging portion 31 is alternately provided with the coolant flow passages 3121 and the air passing passages 3122 in the vertical direction, each of the coolant flow passages 3121 and each of the air passing passages 3122 extends in the horizontal direction and forms the portion to be cooled 312, and the coolant flow passage 3121 located at the uppermost is adapted to exchange heat with the liquid supplementing portion 32. The heat exchanging portion 31 has a liquid return portion 311 and a liquid supply portion 313 extending in the vertical direction at both ends in the longitudinal direction, the liquid return portion 311 has a liquid return end, the liquid supply portion 313 has a liquid supply end, and each coolant flow channel 3121 communicates with the liquid return portion 311 and the liquid supply portion 313. That is, the heat exchanging portion 31 is provided with a liquid returning portion 311, a portion to be cooled 312 and a liquid supplying portion 313 in this order along the length direction thereof, and referring to fig. 7, the heat exchanging device 20 is further provided with heat radiating fins 3125 in the air passing channel 3122 to further increase heat exchanging efficiency.

Referring to fig. 5-6, in the present embodiment, two heat exchange portions 31 are connected in series, wherein the liquid supply end of the liquid supply portion 313 of one heat exchange portion 31 is connected in series with the liquid return end of the liquid return portion 311 of the other heat exchange portion 30 at the included angle end of the two heat exchangers 30 through a pipeline, so that the liquid return portion 311 of one heat exchange portion 31 is located at the open ends of the two heat exchangers 30, and the liquid supply portion 313 of the other heat exchange portion 31 is located at the open ends of the two heat exchangers 30; the liquid return ends of the liquid return portions 311 located at the open ends of the two heat exchangers 30 form liquid return openings 315, and the liquid supply ends of the liquid supply portions 313 located at the open ends of the two heat exchangers 30 form liquid supply openings 314, so that the liquid supply openings 314 and the liquid return openings 315 are both close to the open ends of the two heat exchangers 30 and located on the end surfaces of the corresponding heat exchange portions 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 may be disposed near the open ends of the two heat exchangers 30, and at this time, the liquid return portion 311 and the liquid supply portion 313 are disposed along the vertical direction, so that the liquid supply end and the liquid return end of each heat exchange portion 31 are disposed near the open ends of the two heat exchangers 30 of the heat exchange portion 31, 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 practical application, each heat exchange portion 31 is further provided with a liquid injection port 316 near the end of the included angle, and the liquid injection port 316 can be used for injecting or discharging the cooling liquid into or from the heat exchange portion 31.

Referring still to fig. 5-6, two fluid-supplementing portions 32 are connected in series, the two fluid-supplementing portions 32 are connected in series at the included angle end of the two heat exchangers 30 through a pipeline, a liquid outlet 321 is formed on one of the end surfaces of the fluid-supplementing portions 32, one of the fluid-supplementing 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 fluid-supplementing portion 32 and the top wall of the fluid-supplementing portion 32 is greater than a first value. The pressure release valve may adopt the prior art, and this embodiment will not be described in detail. Thus, the liquid supply port 314, the liquid return port 315 and the liquid outlet port 321 are all near the open ends of the two heat exchangers 30.

In this embodiment, preferably, the expansion cover 33 is disposed near the included angle end of the two heat exchangers 30, and the fluid infusion part 32 is disposed near the included angle end of the two heat exchangers 30 and is provided with a visual window 322 to make the fluid infusion part 32 suitable for being observed, i.e. for an operator to observe the water level in the fluid infusion part 32.

In this embodiment, it is further preferable that the two liquid supplementing portions 32 are further provided with a wind shielding plate 323 connected to the top wall of the accommodating cavity 10A at a side close to each other, and the height of the wind shielding plate 323 is slightly higher than that of the expansion cover 33, so that the wind shielding plate 323 prevents wind flow from flowing through a gap between the heat exchanging portion 31 and the top wall of the accommodating cavity 10A to cause wind flow waste, ensures that most of wind flow blows to the heat exchanging portion 31, and improves heat exchanging efficiency.

Referring to fig. 4-6, the cooling liquid conveying member is disposed in the accommodating space 01 and is lower than the liquid outlet 321, and is communicated 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, and is further provided with a liquid supplementing port 51 communicated with the liquid outlet 321, so that the liquid supplementing portion 32 is suitable for supplementing the cooling liquid to the liquid supplementing port 51 under the action of gravity. The liquid replenishing tank formed by the liquid replenishing part 32 is positioned at the highest position of the liquid path of the liquid cooling pipeline 50. The temperature of the return port 315 is higher than that of the supply port 314.

In this embodiment, the cooling liquid conveying member includes a liquid cooling pipe 50 and a pump 40, the liquid cooling pipe 50 is provided with a liquid inlet, a liquid outlet and a liquid supplementing port 51, the temperature of the liquid inlet is higher than that of the liquid outlet, the pump 40 is connected in series with the liquid cooling pipe 50 so that the cooling liquid of the liquid cooling pipe 50 flows from the liquid inlet to the liquid outlet to drive the cooling liquid to flow from the liquid return port 315 to the liquid supply port 314, and the liquid supplementing port 51 is arranged on the liquid cooling pipe 50 and is close to the input end of the pump 40, so that the pump 40 is suitable for driving the cooling liquid to flow from the liquid inlet, the liquid return port 315 and the liquid supply port 314 to the liquid outlet. It should be understood that in the present embodiment, the coolant delivery means a portion of the piping other than the heat exchanging portion 31.

In this embodiment, the pump 40 is connected in series between the liquid inlet of the liquid cooling pipe 50 and the liquid return port 315 of one of the heat exchange portions 31, and the liquid supply port 314 of the other heat exchange portion 31 is connected to the liquid outlet of the liquid cooling pipe 50.

The formation of the accommodating space 01 in this embodiment enables the cooling liquid conveying member to be placed in the accommodating space 01, thereby fully utilizing the space formed between the two heat exchangers 30 and the accommodating cavity 10A, and since the liquid supply port 314 and the liquid return port 315 are located in the accommodating space 01, the communication pipeline between the cooling liquid conveying member and the liquid supply port 314 and the liquid return port 315 is located in the accommodating space 01, and since the liquid outlet 321 is located in the accommodating space 01, the communication pipeline between the cooling liquid conveying member and the liquid outlet 321 is located in the accommodating space 01, the cooling liquid conveying member can be placed in the accommodating space 01, the cooling liquid conveying member does not influence 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 accommodating cavity 10A, so that the liquid cooling unit has higher heat exchange efficiency and is convenient to install and maintain; the two heat exchange portions 31 are arranged at an included angle, so that the heat exchange portions 31 have larger wind passing area and are small in size, and the heat exchange efficiency of the heat exchange portions 31 is further improved. The liquid supply port 314 and the liquid return port 315 are both close to the open ends of the two heat exchangers 30 and are located on the end surfaces of the corresponding heat exchange portions 31, and the liquid outlet 321 is close to the open ends of the two heat exchangers 30 and is located on the end surface of the liquid supplementing portion 32, so that maintenance of a cooling liquid conveying member, installation and maintenance of a communicating pipeline between the liquid outlet 321 and the liquid supplementing port 51, and 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 sides of the two heat exchangers 30, and the installation and maintenance of a liquid cooling unit are conveniently realized on one side.

Wherein each heat exchanger 30 extends along the vertical direction and is provided with a heat exchange part 31 and a fluid infusion part 32 in turn from bottom to top, the cooling fluid conveying member is lower than the liquid outlet 321, so that the fluid infusion part 32 is positioned at the highest position of the liquid path, and the automatic fluid infusion function can be realized to the fluid infusion port 51 under the action of gravity, wherein the fluid infusion part 32 is supported by the structure of the heat exchange part 31 without arranging a separate supporting structure, the cost is saved, the adverse effect of the supporting structure at other positions on the air passing channel 3122 of the heat exchange part 31 is avoided, in particular, the structure of the heat exchange part 31 in the technical scheme is such that the heat exchange part 31 is inclined relative to the first direction, the inclined arrangement of the heat exchange part 31 has longer length under the condition that the length of the accommodating cavity 10A is fixed, so that the fluid infusion part 32 can also have longer length, and the height of the accommodating cavity 10A is fixed, the fluid infusion part 32 can be arranged on the heat exchange part 32 only by slightly reducing the height of the heat exchange part 31, and the capacity of the fluid infusion part 32 is larger, so that the number of the fluid infusion part 32 is reduced for the fluid infusion of the fluid infusion part 32; more preferably, the liquid supplementing part 32 is positioned above the heat exchanging part 31, so that the liquid adding opening of the liquid supplementing part 32 is positioned at the outer side, thereby facilitating liquid adding operation; in addition, heat exchange can be performed between the heat exchange part 31 and the liquid supplementing part 32, so that the heat exchange efficiency of the heat exchange part 31 is improved.

In this embodiment, when the pressure of the pipeline of the cooling liquid conveying member is relatively high, the pressure of the pipeline of the cooling liquid conveying member can flow to the liquid supplementing portion 32, the liquid level of the liquid supplementing portion 32 rises and extrudes the gas above the liquid, so that the pressure release valve of the expansion cover 33 is opened, that is, the pressure release valve on the expansion cover 33 can realize the pressure release of the pipeline of the cooling liquid conveying member, the pipeline pressure of the cooling liquid conveying member is prevented from being excessively high, and when the pressure of the pipeline of the cooling liquid conveying member is relatively low, the liquid supplementing portion 32 can supplement liquid to the liquid supplementing position under the action of gravity, so that the liquid supplementing portion 32 integrates the functions of the liquid supplementing water tank and the expansion tank, the pipeline of the cooling liquid conveying member is ensured to run under a relatively stable pressure, and therefore, the expansion tank is not required to be arranged in the liquid cooling unit, the volume of the liquid cooling unit is reduced, and the structure of the liquid cooling unit is compact and simple. Wherein, two fluid infusion portions 32 are connected in series, further make the capacity of fluid infusion portion 32 big, reduced the fluid infusion number of times of fluid infusion portion 32, the operation is simpler.

In this embodiment, the expansion cover 33 is disposed close to the included angle end of the two heat exchangers 30, so that on one hand, the expansion cover 33 is convenient to perform fluid infusion operation by opening the expansion cover 33, and on the other hand, the expansion cover 33 is far away from the pump 40, and because the pressure of the fluid in the vicinity of the position of the pump 40 varies greatly, the pressure of the fluid infusion part 32 is easily affected, so that the expansion cover 33 is far away from the pump 40, the expansion cover 33 is prevented from being interfered by the pump 40, and thus the stable implementation of the expansion function of the fluid infusion part 32 is ensured.

In the present embodiment, the air inlet 111 of the accommodating cavity 10A is disposed at the side of the accommodating cavity 10A, the air outlet 101 is disposed at the top of the accommodating cavity 10A, and the hot air density is small, so that the hot air exhausted from the top of the accommodating cavity 10A mainly flows upward, but does not flow downward, thereby avoiding the heat flow disturbance to the air inlet 111 of the downstream electrical device. When the air outlet 101 is disposed at the top, in the conventional heat exchange device 20, the two heat exchange portions 31 are V-shaped and open upwards, the fan is disposed above the region between the two heat exchange portions 31, the heat exchange portions 31 are inclined relative to the vertical direction, the air channel in the heat exchange portion 31 is also inclined relative to the vertical direction, after the fan works, the movement direction of the air flow after passing through the air channel 3122 changes, the air flows of the two heat exchange portions 31 blow between the two heat exchange portions, so sand is easy to accumulate in the inner and outer angles of the bottoms of the two heat exchange portions 31 and the air channel in the heat exchange portion 31 under the action of gravity and the air flow, the wind resistance is large after long-term operation, greatly influences the heat exchange efficiency. The exhaust fan 102 is disposed at the air outlet 101 to drive air flow from the air inlet 111, the first air inlet 131, and the second air inlet 141 to the air outlet 101 through the air passage 3122. In fig. 4, the projection of the suction fan 102 in the vertical direction is spaced from the two heat exchangers 30 in the first direction, ensuring that the wind flow completely flows through the wind pass 3122 of the heat exchangers 30. The arrangement of the first and second air inlets 131 and 141 facilitates the faster removal of heat from the coolant flow channels of the two heat exchangers 30, thereby improving the heat exchange efficiency of the heat exchangers 30.

Referring to fig. 3, the heat generating assembly 60 is disposed in the over-air chamber and includes a liquid cooling plate 61 and an electrical assembly 62, the liquid cooling plate 61 communicating with the coolant delivery member to dissipate heat from at least a portion of the electrical assembly 62.

The heat dissipation cavity 10B is located below the accommodating cavity 10A, and the electrical component 62 in the heat dissipation cavity 10B can dissipate heat at least partially through a liquid cooling mode, so that on one hand, the liquid cooling mode is easier to control than an air cooling mode, the heat dissipation efficiency is high, on the other hand, a relatively airtight structure can be formed in the heat dissipation cavity 10B, and therefore the protection performance of the heat dissipation cavity 10B is improved, wherein a liquid cooling unit is arranged in the accommodating cavity 10A at the top, when the liquid cooling unit dissipates heat through an air cooling mode, an air inlet 111 of the accommodating cavity 10A is also located at the top, and the air inlet 111 is far away from the ground, so that the air inlet temperature is low, the heat dissipation efficiency of the liquid cooling unit is high, and therefore, the electrical component 62 is guaranteed to have high heat dissipation efficiency; because the liquid cooling unit has no water inlet concern, the air outlet 101 can be formed in the top of the cabinet body 10, so that heat flow disturbance is not easy to be generated on a downstream cabinet when a plurality of cabinets are used in parallel, and even if heat flow flows out from the side surface of the top of the cabinet body 10, the influence on the downstream cabinet is not easy to be generated because of the small density of hot air; because the liquid cooling unit is arranged at the top, the side part of the cabinet body 10 is unoccupied, and the parallel operation or the parallel operation along the horizontal direction of a plurality of cabinets is convenient. The side walls of the cabinet body 10 except the first side wall 11 and the second side wall 12, namely the third side wall 13 and the fourth side wall 14, do not need to enter and exit air or maintenance, so that the side walls and other cabinet bodies 10 can be used for cabinet combining, and the work, heat dissipation and maintenance of the cabinet are not affected; when a plurality of cabinets are parallel-connected in the second direction, only the first secondary air inlet 131 and the second secondary air inlet 141 at the outermost sides can be used for air intake. The first and second air inlets 131 and 141 do not enter the receiving chamber 10A of the middle cabinet due to the limitation of the wind pressure.

Example 2

Example 2 is basically the same as example 1, except that the heat exchanging part 31 and the liquid replenishing part 32 are integrally formed, and the heat conducting fin 34 is not provided between the heat exchanging part 31 and the liquid replenishing part 32. The heat exchange part 31 and the fluid supplementing part 32 are integrally formed, so that the processing is simpler, and on the other hand, the heat exchange efficiency of the heat exchange part 31 and the fluid supplementing part 32 is good due to the arrangement that the heat exchange part 31 is generally made of a material which is easy to conduct heat.

Example 3

Embodiment 3 is substantially the same as embodiment 1 except that, referring to fig. 8, the through-air duct 3122 includes at least a first through-air duct 3123 near the liquid supplementing portion 32 and a second through-air duct 3124 far from the liquid supplementing portion 32, and the through-air area of the first through-air duct 3123 is smaller than the through-air area of the second through-air duct 3124. In other embodiments, the air passing area of the air passing channel 3122 may be gradually increased in a direction away from the liquid replenishing portion 32.

The cooling liquid flow channel 3121 positioned at the uppermost is suitable for exchanging heat with the liquid supplementing part 32, so that the first air passing channel 3123 close to the liquid supplementing part 32 can also utilize the heat exchange of the liquid supplementing part 32 to dissipate heat, thus the heat dissipation efficiency of the first air passing channel 3123 is better than that of the second air passing channel 3124, and on the basis, the air passing area of the first air passing channel 3123 is set 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 have higher heat dissipation efficiency, thereby improving the heat dissipation efficiency of the heat exchanging part 31 as a whole. In practice, the two heat exchange portions 31 are mirror-symmetrical about a plane parallel to the first direction and the vertical direction.

Example 4

Embodiment 4 is substantially the same as embodiment 3 except that a heater (not shown) is provided in the liquid replenishing portion 32, and a pressure sensor is provided at an input end of the pump 40, and the heater is adapted to heat the liquid or air of the liquid replenishing portion 32 until the pressure value reaches the set value when the pressure value detected by the pressure sensor is smaller than the set value. In this embodiment, the heater mainly heats the liquid in the liquid replenishing portion 32.

In practical applications, the heater includes a controller and a heating plate, the heating plate can be disposed at the bottom of the liquid supplementing portion 32, the controller controls the heating of the heating plate according to the change of the pressure sensor, and in other embodiments, a manual switch can be further provided to control the heating of the heater.

Because the pressure of the input end of the pump 40 needs to reach a certain value when the liquid cooling unit is in a low-temperature environment or before the liquid cooling unit is operated, the pressure of the input end of the pump 40 is small and is difficult to start, and therefore the pressure of the input end of the pump 40 needs to be lifted under the low-temperature environment or before the liquid cooling unit is operated.

Under low pressure start conditions of the pump 40, the heater may be turned off when the pressure at the input of the pump 40 reaches a set point, while under low temperature operating conditions, the heater may be turned on all the time to maintain the pressure at the input of the pump 40 at the set point.

It should be understood that when the heater heats the fluid-replenishing portion 32, the heating temperature should be controlled so that the maximum pressure generated above the fluid of the fluid-replenishing portion 32 is smaller than the expansion pressure at which the relief valve of the expansion cap 33 is opened.

It should be appreciated that, after the liquid cooling unit is normally operated, the heater is generally not heated, so that the liquid temperature of the liquid replenishing portion 32 is substantially consistent with the ambient temperature, and since the first passing air channel 3123 is close to the liquid replenishing portion 32, heat can be dissipated by using heat exchange of the liquid replenishing portion 32.

Example 5

Example 5 is basically the same as example 4, except that the heat exchanging part 31 and the liquid replenishing part 32 are integrally formed, and the heat conducting fin 34 is not provided between the heat exchanging part 31 and the liquid replenishing part 32. The heat exchange part 31 and the fluid supplementing part 32 are integrally formed, so that the processing is simpler, and on the other hand, the heat exchange efficiency of the heat exchange part 31 and the fluid supplementing part 32 is good due to the arrangement that the heat exchange part 31 is generally made of a material which is easy to conduct heat.

Example 6

Embodiment 6 is substantially the same as embodiment 4, referring to fig. 9, except that two heat exchange portions 31 are connected in parallel, the structures of the heat exchange portions 31 are different, the heat exchange portions 31 are sequentially provided with a liquid return portion 311, a portion to be cooled 312 and a liquid supply portion 313 from top to bottom, cooling liquid channels 3121 and air passing channels 3122 are alternately arranged on the heat exchange portions 31 along the length direction thereof, and each cooling liquid channel and each air passing channel 3122 extend in the vertical direction and form the portion to be cooled 312; the upper end and the lower end of the heat exchanger 30 are respectively provided with a liquid return part 311 and a liquid supply part 313 which are communicated with each cooling liquid flow channel, so that the heat exchange part 31 is sequentially provided with the liquid return part 311, a part to be cooled 312 and the liquid supply part 313 from top to bottom, the liquid return part 311 extends along the horizontal direction and is provided with a liquid return end at the end part close to the opening end of the included angle of the two heat exchangers 30, the two liquid return ends are connected in parallel to form a liquid return port 315, the liquid supply part 313 extends along the horizontal direction and is provided with a liquid supply end at the end part close to the opening end of the included angle of the two heat exchangers 30, and the two liquid supply ends are connected in parallel to form a liquid supply port 314; the liquid return portion 311 is adapted to exchange heat with the liquid replenishing portion 32.

Because the pressure of the input end of the pump 40 needs to reach a certain value when the pump 40 runs, when the liquid cooling unit is in a low-temperature environment, the pressure of the input end of the pump 40 is smaller and is difficult to start, and therefore, the pressure of the input end of the pump 40 needs to be raised under the low-temperature environment. Under normal operating conditions after the pump 40 is normally started, the heater is generally not heated, so that the liquid temperature of the liquid supplementing portion 32 is basically consistent with the ambient temperature, and heat of the liquid returning portion 311 can be quickly taken away through heat exchange of the liquid supplementing portion 32, thereby compensating for heat exchange efficiency loss of the heat exchanging portion 31. In this scheme, two heat exchange portions 31 are connected in parallel, that is, the liquid return portion 311 of each heat exchanger 30 is the hottest liquid just recovered (the temperature difference between the liquid inside the heat exchange portion and the external cold air is the largest, and the heat exchange effect is the best), meanwhile, only half of the total flow of the system is arranged on each heat exchange portion 31, so that the flow resistance of the system is greatly reduced, the heat exchange efficiency of the heat exchange portion 31 is increased, the flow resistance of the system is also reduced, and more preferably, the heat exchange efficiency between the liquid return portion 311 and the liquid supplementing portion 32 is good.

The foregoing description of the embodiments and description is presented to illustrate the scope of the invention, but is not to be construed as limiting the scope of the invention. Modifications, equivalents, and other improvements to the embodiments of the invention or portions of the features disclosed herein, as may occur to persons skilled in the art upon use of the invention or the teachings of the embodiments, are intended to be included within the scope of the invention, as may be desired by persons skilled in the art from a logical analysis, reasoning, or limited testing, in combination with the common general knowledge and/or knowledge of the prior art.

Claims

1. A liquid cooling unit for being placed in a containing cavity (10A), characterized by comprising

The heat exchange device (20) is provided with two heat exchangers (30) which are arranged at an included angle, one ends of the two heat exchangers (30) along the horizontal first direction are intersected with each other, the other ends of the two heat exchangers are far away from each other to form an opening, and the outer side surfaces of the two heat exchangers (30) are matched with the cavity wall of the accommodating cavity (10A) to form an accommodating space (01) which covers an included angle area between the two heat exchangers (30); 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) comprises a plurality of cooling liquid flow channels (3121) and an air passing channel (3122) for exchanging heat to the cooling liquid flow channels (3121); the two heat exchange parts (31) jointly form a heat exchange unit, and the heat exchange unit is provided with a liquid supply port (314) and a liquid return port (315) in the accommodating space (01); the two liquid supplementing parts (32) jointly form a liquid supplementing unit, and a liquid outlet (321) is formed in the accommodating space (01) of the liquid supplementing unit; and

The cooling liquid conveying part is arranged in the accommodating space (01) and is lower than the liquid outlet (321), is communicated with the liquid supply port (314) and the liquid return port (315) to drive cooling liquid to flow from the liquid return port (315) to the liquid supply port (314), and is also provided with a liquid supplementing port (51) communicated with the liquid outlet (321), so that the liquid supplementing part (32) is suitable for supplementing cooling liquid to the liquid supplementing port (51) under the action of gravity.

2. The liquid cooling unit as claimed in claim 1, wherein the liquid supply port (314), the liquid return port (315) and the liquid outlet port (321) are all near the open ends of the two heat exchangers (30).

3. A liquid cooling unit according to claim 2, characterized in that two liquid supplementing parts (32) are connected in series, the liquid outlet (321) is formed on one of the end surfaces of the liquid supplementing parts (32), wherein one liquid supplementing part (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 supplementing part (32) and the top wall of the liquid supplementing part (32) is larger than the first value.

4. A liquid cooling unit according to claim 3, wherein the heat exchanging portion (31) and the liquid supplementing portion (32) are integrally formed, and a projection of the liquid supplementing portion (32) in each heat exchanger (30) in a vertical direction covers the heat exchanging portion (31); the heat exchange device (20) is also provided with radiating fins (3125) in the air passage (3122).

5. A liquid cooling unit according to claim 3, wherein the projection of the liquid supplementing portion (32) of each heat exchanger (30) along the vertical direction covers the heat exchanging portion (31), a heat conducting fin (34) is arranged between the heat exchanging portion (31) and the liquid supplementing portion (32), and the heat exchanging device (20) is further provided with a heat radiating fin (3125) in the air passing channel (3122).

6. The liquid cooling unit according to claim 4 or 5, wherein the side of the accommodating chamber is provided with an air inlet (111) opened along the horizontal direction, and the top of the accommodating chamber is provided with an air outlet (101); the cooling liquid flow channels (3121) and the air passing channels (3122) are alternately arranged on the heat exchange part (31) along the vertical direction, and each cooling liquid flow channel (3121) and each air passing channel (3122) extend along the horizontal direction; the cooling liquid flow channel (3121) positioned at the uppermost part is suitable for exchanging heat with the liquid supplementing part (32), the air passage (3122) at least comprises a first air passage (3123) close to the liquid supplementing part (32) and a second air passage (3124) far away from the liquid supplementing part (32), and the air passage area of the first air passage (3123) is smaller than the air passage area of the second air passage (3124).

7. The fluid cooling unit as claimed in claim 6, wherein a heater is provided in the fluid supplementing portion (32), the coolant conveying member comprises a fluid cooling pipe (50) and a pump (40), the pump (40) is connected in series with the fluid cooling pipe (50) to drive the coolant to flow from the fluid return port (315) to the fluid supply port (314), the fluid supplementing port (51) is provided in the fluid cooling pipe (50) and is close to the input end of the pump (40), and the heater is adapted to heat the fluid or air in the fluid supplementing portion (32) before the pump (40) is started;

The two ends of the heat exchange part (31) in the length direction are respectively provided with a liquid return part (311) and a liquid supply part (313) which extend along the vertical direction, the liquid return part (311) is provided with a liquid return end, and the liquid supply part (313) is provided with a liquid supply end; the two heat exchange parts (31) are connected in series, wherein a liquid return part (311) of one heat exchange part (31) is positioned at the opening ends of the two heat exchangers (30), and a liquid supply part (313) of the other heat exchange part (31) is positioned at the opening ends of the two heat exchangers (30); the liquid return port (315) is formed at the liquid return end of the liquid return part (311) positioned at the opening ends of the two heat exchangers (30), and the liquid supply port (314) is formed at the liquid supply end of the liquid supply part (313) positioned at the opening ends of the two heat exchangers (30); the coolant flow passages 3121 are connected to the liquid return portion 311 and the liquid supply portion 313.

8. The liquid cooling unit according to claim 4 or 5, wherein the side of the accommodating chamber is provided with an air inlet (111) opened along the horizontal direction, and the top of the accommodating chamber is provided with an air outlet (101); the liquid supplementing part (32) is internally provided with a heater, the cooling liquid conveying part comprises a liquid cooling pipeline (50) and a pump (40), the pump (40) is connected in series with the liquid cooling pipeline (50) to drive cooling liquid to flow from a liquid return port (315) to a liquid supply port (314), the liquid supplementing port (51) is arranged on the liquid cooling pipeline (50) and is close to the input end of the pump (40), and the heater is suitable for heating liquid or air in the liquid supplementing part (32) before the pump (40) is started;

The two heat exchange parts (31) are connected in parallel, the cooling liquid flow channels (3121) and the air passing channels (3122) are alternately arranged on the heat exchange parts (31) along the length direction of the heat exchange parts, and each cooling liquid flow channel (3121) and each air passing channel (3122) extend along the vertical direction; the upper end and the lower end of the heat exchangers (30) are respectively provided with a liquid return part (311) and a liquid supply part (313) which are communicated with the cooling liquid flow channels (3121), the liquid return part (311) extends along the horizontal direction, the end part close to the opening end of the included angle of the two heat exchangers (30) is provided with a liquid return end, the two liquid return ends are connected in parallel to form the liquid return opening (315), the liquid supply part (313) extends along the horizontal direction, the end part close to the opening end of the included angle of the two heat exchangers (30) is provided with a liquid supply end, and the two liquid supply ends are connected in parallel to form the liquid supply opening (314); the liquid return portion (311) is adjacent to the liquid supplementing portion (32) and is adapted to exchange heat with the liquid supplementing portion (32).

9. A liquid cooling unit according to claim 3, wherein the expansion cover (33) is arranged near the included angle end of the two heat exchangers (30), and the liquid supplementing part (32) is provided with a visual window (322) near the included angle end of the two heat exchangers (30) so that the liquid level of the liquid supplementing part (32) is suitable for being observed; one side of the two liquid supplementing parts (32) close to each other is also provided with a wind baffle plate (323) connected with the top wall of the accommodating cavity.

10. A cabinet comprising a cabinet body (10), a liquid cooling unit according to any one of claims 1-9, and a heat generating assembly (60); the top of the cabinet body (10) is provided with a containing cavity (10A), and a relatively airtight heat dissipation cavity (10B) is arranged below the containing cavity (10A); an air inlet (111) arranged along the horizontal direction is arranged at the side part of the accommodating cavity (10A), and an air outlet (101) is arranged at the top part; the liquid cooling unit is arranged in the accommodating cavity (10A); the heating component (60) is arranged in the heat dissipation cavity (10B) and comprises a liquid cooling plate (61) and an electric component (62), and the liquid cooling plate (61) is communicated with the cooling liquid conveying piece to dissipate heat of at least part of the electric component (62).