CN112020271B

CN112020271B - Liquid cooling device and server including the same

Info

Publication number: CN112020271B
Application number: CN202010717192.3A
Authority: CN
Inventors: 胡航空; 姚希栋
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2017-07-17
Filing date: 2017-07-17
Publication date: 2022-04-22
Anticipated expiration: 2037-07-17
Also published as: CN107484387B; CN112020271A; CN107484387A; WO2019015321A1; CN111918527A

Abstract

The application discloses an immersed liquid cooling device, a blade server and a rack server, wherein the liquid cooling device comprises a shell and external refrigeration equipment, the shell internally comprises a closed cavity, electronic components to be cooled are installed in the closed cavity, and first cooling liquid is filled in the closed cavity; at least one flow channel is arranged in the body of the shell; the flow channel and the external refrigeration equipment form a loop, and second cooling liquid is filled in the loop; the external refrigeration equipment is used for cooling the second cooling liquid and providing circulating power for the second cooling liquid; the second cooling liquid discharges the heat of the electronic component to be radiated, which is conducted by the first cooling liquid, out of the shell through the closed cavity, so that the electronic component to be radiated is radiated. The problems that a liquid cooling system is low in heat dissipation efficiency, high in production cost or operation cost, inconvenient in maintenance of electronic components and the like are solved.

Description

Liquid cooling device and server including the same

The application is a divisional application named as 'an immersed liquid cooling device, a blade server and a rack server', with the patent application number of 201710580412.0 and the application date of 2017, 7 and 17.

Technical Field

The application relates to the field of cooling devices for electronic components, in particular to a liquid cooling device and a server comprising the same.

Background

In electronic equipment, along with the promotion of hardware integration, electronic components's consumption is showing the increase, and the radiating effect of forced air cooling heat dissipation has in the past been unable to satisfy electronic equipment's heat dissipation demand, and liquid cooling (for short liquid cooling) technique has obtained preliminary application in the IT field as an efficient cooling mode.

The common liquid cooling mode is plate-level liquid cooling and immersion liquid cooling, wherein the plate-level liquid cooling means that electronic components inside the electronic equipment firstly conduct heat to the radiating block, then contact with the whole plate heat conducting pad through the radiating block, the heat conducting pad conducts the heat to the upper cover of the electronic equipment, and then the upper cover conducts the heat to the outside of the electronic equipment through water, so that the purpose of heat dissipation is achieved. The immersion liquid cooling means immersing the entire electronic device in a closed container with a cooling liquid, and transferring heat of the electronic device by the flow of the cooling liquid. However, in the immersion liquid cooling method, when equipment is maintained, the whole electronic equipment needs to be taken out of the cooling liquid at first, and then the fault module needs to be disassembled, and at the moment, the whole equipment is stained with the cooling liquid, so that the disassembly operation and the maintenance are not easy to perform. In the prior art, the maximum heat dissipation efficiency of a plate-level liquid cooling mode can only reach 80%. The maximum heat dissipation efficiency of the immersion liquid cooling method can reach 100%, and therefore, the heat dissipation of the electronic equipment tends to adopt the immersion cooling method more and more. However, the above immersion liquid cooling method has the problems of inconvenient maintenance and deployment of electronic components, high cost, and the like, and cannot meet the requirement of large-scale application. There is a need to develop a liquid cooling device that facilitates the maintenance and deployment of electronic components, is low in cost, and has a high heat dissipation rate.

Disclosure of Invention

The application provides an immersion type liquid cooling device to solve the problems that a liquid cooling system is low in heat dissipation efficiency, high in production cost or operation cost, inconvenient in maintenance of electronic components and the like.

In order to solve the above technical problem, the present application provides the following aspects:

the first aspect provides an immersed liquid cooling device, which comprises a shell and an external refrigeration device connected with the shell, wherein one or more flow channels are formed in the shell, the flow channels and the external refrigeration device form a loop, a second cooling liquid is filled in the loop, the external refrigeration device is used for cooling the second cooling liquid and providing circulating power for the second cooling liquid, the first cooling liquid is filled in a closed cavity, the flow channels and a closed loop formed by the refrigeration device are filled with the second cooling liquid, the second cooling liquid flows between the flow channels and the refrigeration device in a circulating mode, and heat of an electronic component to be cooled conducted by the first cooling liquid is discharged out of the shell through the closed cavity, so that the heat of the electronic component to be cooled is dissipated.

In one possible implementation, the electronic component to be cooled is fixedly disposed on a Printed Circuit Board (PCB) to form an equipment board, and the equipment board is fixedly disposed in the housing, so that the electronic component to be cooled is disposed inside the sealed cavity.

In another possible implementation manner, the housing includes a hollow housing main body, a bottom plate hermetically connected to a bottom end of the housing main body, and a top plate hermetically connected to a top end of the housing main body, wherein at least one of the bottom plate and the top plate is detachably connected to the housing main body to form a detachable housing.

In another possible implementation, a seal is provided at the connection of the housing body with the removably connected top and/or bottom plate.

In another possible implementation manner, a connector is further disposed on the device board and is used for being electrically connected with the back panel or other electronic components, the connector extends out of the housing or is embedded in the housing body, and the connector is used for being electrically connected with the back panel or other electronic components.

In another possible implementation, the flow passage is provided in one or more of an interior of the case main body, an interior of the top plate body, and an interior of the bottom plate body.

In another possible implementation manner, the flow channel includes a main flow channel and a sub-flow channel, and the sub-flow channel is communicated with the main flow channel.

In another possible implementation manner, the two ports of the flow channel on the housing are respectively the housing inlet and the housing outlet, the external refrigeration equipment is provided with a refrigeration inlet and a refrigeration outlet, the two ports on the housing and the refrigeration inlet and the refrigeration outlet on the external refrigeration equipment form a sealed channel for circulating the second cooling liquid between the flow channel and the cooling equipment, wherein the housing inlet is provided with a housing inlet quick connector, the housing outlet is provided with a housing outlet quick connector, the refrigeration inlet is provided with a refrigeration inlet quick connector matched with the housing outlet quick connector, the refrigeration outlet is provided with a refrigeration outlet quick connector matched with the housing inlet quick connector, the liquid inlet quick joint and the liquid outlet quick joint are used for sealing the second cooling liquid.

In another possible implementation manner, a power device for driving the circulation of the second cooling liquid and a purification device for purifying the second cooling liquid are further communicated between the shell and the external refrigeration device.

In another possible implementation, the first cooling liquid is silicon mineral oil and/or a fluorinated liquid; the second cooling liquid is a composition formed by water and/or additives and water.

The application discloses immersion type liquid cooling device will treat radiating electronic components and encapsulate in the metal system seal shell who has first coolant liquid set up the runner that communicates with external cooling equipment on seal shell's the body, be full of the second coolant liquid that is used for circulating between seal shell body and external cooling equipment in the runner, the heat direct transfer that electronic components produced when moving is for first coolant liquid, the seal shell of first coolant liquid rethread metal system gives microthermal second coolant liquid with heat transfer, accomplish electronic components and external heat exchange, the direct first coolant liquid use amount with electronic components contact in the seal shell is little, and mutual independence between each seal shell, be convenient for to electronic components's maintenance, maintenance efficiency has been promoted. On the other hand, the second cooling liquid circulating between the closed cavity and the external cooling equipment can use cheap water or other cheap cooling media, so that the problem that a large amount of expensive cooling liquid is consumed for fully submerged or node type liquid cooling is solved, and the cost of a liquid cooling system is reduced. And through the design of runner position and quantity, promoted the radiating efficiency of liquid cooling system.

In a second aspect, the present application further provides a blade server with a liquid cooling device, where the blade server is provided with an immersion liquid cooling device as described in the first aspect and any one of the possible implementation manners of the first aspect. The blade server is provided with at least one shell and at least one external refrigeration device, that is, one shell or a plurality of shells can be arranged in the blade server, and the plurality of shells can share one external refrigeration device or each shell can be respectively provided with one external refrigeration device.

In a third aspect, the present application further provides a rack-mounted server provided with a liquid cooling device, where the rack-mounted server is provided with the immersion type liquid cooling device as described in the first aspect and any one of the possible implementation manners of the first aspect. The blade server may be provided with one or more housings, and the plurality of housings may share one external cooling device or each housing may be provided with one external cooling device.

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 embodiments of the present invention will be briefly described below.

FIG. 1 is a schematic longitudinal sectional view of an immersion liquid cooling apparatus according to the present application;

FIG. 2 is a schematic longitudinal sectional view of another immersion liquid cooling apparatus provided herein;

FIG. 3 is a schematic longitudinal sectional view of another immersion liquid cooling apparatus provided herein;

FIG. 4 is an exploded view of a housing according to the present disclosure;

FIG. 4a is an exploded view of another housing provided herein;

FIG. 5 is a top cross-sectional view of a top plate provided herein;

FIG. 6 is a top cross-sectional view of another top panel provided by the present application;

FIG. 7 is a top longitudinal view of the top plate shown in FIG. 6 as provided herein;

fig. 8 is a schematic perspective view of a top plate having main runners and sub runners according to the present application;

FIG. 9 is a schematic diagram of a liquid-cooled blade server according to the present application;

fig. 10 is a schematic structural diagram of a liquid-cooled rack server according to the present application.

Detailed Description

Fig. 1 is a schematic longitudinal sectional view of a liquid cooling device provided by the present application. As shown in fig. 1, the liquid cooling apparatus includes a housing and an external cooling device 2. Fig. 4 further shows an exploded structure of the housing, as shown in fig. 4, the housing includes a hollow housing main body 12, a bottom plate 13 and a top plate 14, the three are hermetically connected to form a closed cavity 11, and a flow channel 6 is opened on a body of the top plate 14.

The shell comprises a closed cavity 11, and the electronic component 7 to be cooled is arranged in the closed cavity 11. The first cooling liquid is filled in the closed cavity 11, fills the closed cavity 11 and is in direct contact with the electronic component 7 to be cooled. In the liquid cooling apparatus shown in fig. 1, the flow path 6 is not communicated with the sealed chamber 11 but is communicated with the external cooling device, and a circuit formed by the flow path 6 and the external cooling device 2 is filled with the second cooling liquid. The external cooling device 2 is used to cool the second cooling liquid and provide the second cooling liquid with circulating power. For example, the second cooling liquid carrying heat flows into the external refrigeration equipment, and after being cooled by the external refrigeration equipment, the second cooling liquid flowing out of the low temperature dissipates heat to the electronic component to be dissipated through heat exchange with the first cooling liquid packaged in the shell. The external refrigeration equipment can be a cold well, a cooling tower and the like which are provided with power equipment. The "body" in this application refers to the tangible entity itself that constitutes the part, for example, the body of the top panel refers to the sheet material itself that constitutes the top panel.

Optionally, a separate power device 3 may be communicated in the loop formed by the shell and the external refrigeration device 2, and is used for providing circulating power for the second cooling liquid so as to increase the circulating speed of the second cooling liquid in the loop, thereby improving the heat exchange efficiency.

Optionally, a purification device 4, a flow rate monitoring device 16 and a pressure monitoring device 17 may also be connected in the circuit formed by the housing and the external refrigeration device 2. Wherein, the power device 3 is used for providing circulating power for the second cooling liquid, so that the second cooling liquid continuously circulates and flows between the shell and the external refrigeration equipment 2, and the power device 3 is a circulating pump, a booster pump and the like. The purifying device 4 is used for purifying the second cooling liquid, removing mechanical impurities possibly existing in the second cooling liquid or impurities such as microorganisms generated by the second cooling liquid, and avoiding the impurities in the second cooling liquid from damaging other devices in the loop, and the purifying device 4 is a filter membrane, a pipeline filter, and the like. A flow rate monitoring device 16, such as a flow meter or the like, is used to monitor the flow rate of the second coolant. A pressure monitoring device, such as a hydraulic gauge or the like, is used to monitor the second cooling liquid pressure.

It is worth mentioning that one housing may be connected to one or more external cooling devices. Similarly, one external refrigeration device may refrigerate only one casing, or may refrigerate multiple casings at the same time, where multiple casings may be in series communication or in parallel communication, and in the following description of the present application, a case where one external refrigeration device is connected to one casing is described as an example.

The first cooling fluid may be selected from at least one of silicon mineral oil or fluorinated Liquid, for example, OptiCool87252UV manufactured by Liquid Cool Solution, or Novec manufactured by 3M^TM649。

The second cooling fluid may be at least one selected from water or a combination of additives and water. The additive is a substance which can be dissolved in water or is mutually soluble with water, such as glycol and the like, and the condensation point of a composition formed by glycol and water is lower than-20 ℃, so that under the same condition, the second cooling liquid with the low condensation point can exchange more heat with the first cooling liquid, and in addition, the growth of microorganisms in water can be effectively inhibited after the glycol is added in the water, thereby being convenient for equipment maintenance and repair. In the following description of the present application, a composition formed by the second cooling liquid as an additive and water is described in further detail.

The immersed liquid cooling device of the embodiment has the working principle that: after the electronic component to be radiated generates heat during operation, the first cooling liquid which is filled around the electronic component to absorb the heat emitted by the electronic component to be radiated is conducted to the surface of the sealed cavity body through the first cooling liquid and then conducted to the external refrigeration equipment through the second cooling liquid flowing in the flow channel, so that the continuous radiation of the electronic component to be radiated is realized, and the external refrigeration equipment provides circulating power for the second cooling liquid in the circulating flowing process of the second cooling liquid.

Next, how the immersion type liquid cooling apparatus provided in the present application achieves heat dissipation of an electronic device will be further described with reference to the accompanying drawings.

The housing shown in fig. 1 is made of a heat conductive material, such as a metal housing or a ceramic housing. Compare in ceramic housing, the metal casing is convenient for casing thickness to density is less, and when the both sides difference in temperature was great, the casing also can keep physical structure stable, and does not take place destructive deformation such as cracked, is convenient for use and maintain in electronic equipment.

Wherein, the structure of casing can adopt any one in following structure:

the structure I is as follows: the top plate, the bottom plate and the shell main body can be detached.

Fig. 4 is a schematic structural diagram of a housing provided in the present application. As shown in the figure, the casing includes a hollow casing main body 12, a bottom plate 13 hermetically connected to the bottom end of the casing main body 12, and a top plate 14 hermetically connected to the top end of the casing main body 12, and the bottom plate 13 and the top plate 14 are detachably connected to the casing main body 12, so that the equipment single plate 81 is installed in the sealed casing, thereby forming a sealed cavity 11 inside the casing. A flow passage 6 is opened in the body of the top plate 14. The bottom plate 13 is a flat plate so that the housing can be stably installed in the whole machine. In addition, in the structure of the housing, a sealing member 91 is provided at the joint of the housing main body 12 and the detachably connected top plate 14 and bottom plate 13 for preventing the first cooling liquid inside the sealed cavity 11 from seeping out of the housing, and specifically, as shown in fig. 1, the sealing member 91 may be any one of the parts for sealing, such as a sealing ring, a sealing strip, and the like.

The device single board 81 may be sandwiched between the case main body 12 and the bottom board 13, that is, the top board 14, the case main body 12, the device single board 81, and the bottom board 13 are sequentially stacked.

Alternatively, the device single board 81 may also be clamped between the top board 14 and the case main body 12, that is, the top board 14, the device single board 81, the case main body 12, and the bottom board 13 are sequentially stacked.

Alternatively, the bottom plate 13 and the case main body 12 are fastened by a fastener, such as a screw, or fixedly connected by a snap.

The structure II is as follows: the bottom plate and the shell main body are detachable, and the top plate and the shell main body are not detachable.

Fig. 4a is a schematic structural diagram of another housing provided in the present application, and the difference from fig. 4 is that: the top plate 14 is formed integrally with the case main body 12, and only the bottom plate is detachable from the case main body, thereby increasing the sealing property of the hermetic chamber 11.

In the present embodiment, the device board 81 is sandwiched between the case main body 12 and the bottom plate 13, that is, the top plate 14, the case main body 12, the device board 81, and the bottom plate 13 are stacked in this order.

And the top plate and the shell main body are detachable, and the bottom plate and the shell main body are not detachable (not shown in figures 4 and 4 a).

Similar to the second structure shown in fig. 4a, the bottom plate 13 is integrally formed with the housing main body 12, and only the top plate is detachable from the housing main body, so that the sealing performance of the sealed cavity 1 is improved.

In the third configuration, the device single board 81 is sandwiched between the top plate 14 and the case main body 12, that is, the top plate 14, the device single board 81, the case main body 12, and the bottom plate 13 are stacked in this order.

Further, as shown in fig. 1, in the liquid cooling apparatus, at least one electronic component 7 to be cooled is included in the sealed cavity 11 of the housing. The electronic component to be cooled includes a CPU, an internal memory, or a network card, etc., and the electronic component 7 to be cooled is mounted on a Printed Circuit Board (PCB) according to a preset position and a connection manner to form an equipment board 81. The equipment board 81 is fixed in the closed cavity 11. In addition, electronic components to be cooled in the electronic equipment may be the same or different, and the application is not limited. As shown in fig. 1, the electronic device includes two different electronic components.

A connector 8 is further mounted on the device board 81, and the connector 8 is used for electrically connecting with the backplane 9 or other electronic components. The number of the connectors 8 on the device board 81 may be one or more. The connector 8 may be disposed outside the housing or may be snap-fitted to the housing body. For example, 2 connectors 8 are mounted on the device board 81 shown in fig. 1, and the connectors 8 are provided outside the housing. The back plate 9 is a circuit board, and is used for electrically connecting the electronic component 7 to be cooled with other electronic components, wherein the other electronic components are electronic components arranged outside the shell.

Alternatively, fig. 2 is a schematic longitudinal sectional view of another immersion liquid cooling apparatus provided in the present application. The difference from fig. 1 is that the right side connector of the equipment board 81 in the immersion type liquid cooling apparatus shown in fig. 2 is electrically connected to other electronic components. The channel connecting the housing and the external refrigeration equipment 2 may pass through the back plate 9 according to the service requirement, or may not pass through the back plate 9, which is not limited in this application.

Illustratively, as shown in fig. 2, the connection passage of the housing to the external cooling device 2 passes through the back plate 9.

Furthermore, the shape of the housing of the immersion type liquid cooling device provided by the application can be changed according to the different shapes of the electronic components to be cooled.

The shape of the housing may be a rectangular parallelepiped structure as shown in fig. 1. Referring also to fig. 3, the shape of the housing matches the shape of the electronic component 7 to be cooled. Since the device board 81 is provided with a plurality of different electronic components 2, the electronic components have different physical shapes and have larger height differences, the shape of the housing may change with the change of the external shape of the electronic component, for example, the shape of the housing changes with the change of the height of the electronic component. On one hand, the volume of the whole machine is reduced, and on the other hand, the volume of the cavity in the shell is reduced, so that the consumption of the first cooling liquid is reduced, and the cooling cost is reduced. Correspondingly, the top plate 14 may be a flat plate or a curved plate, and is adapted to the shape of the housing to form the sealed cavity 11.

It should be noted that, for the same electronic device, one housing may be provided for each electronic component to be cooled, or one housing may be provided for two or more electronic components to be cooled.

At least one flow channel 6 can be arranged on each shell body, and each flow channel is communicated with the external refrigeration equipment 2.

Specifically, fig. 5 is a cross-sectional top view of the flow channel top plate provided in the present application, and as shown in fig. 5, a linear flow channel 6 is disposed on the top plate 14. The straight-line-shaped flow channel 6 has small flow resistance to the second cooling liquid, so that the second cooling liquid has high flow speed and high heat exchange efficiency, and the straight-line-shaped flow channel is convenient to open.

Fig. 6 is a top view of a cross section of a flow channel top plate provided by the present application, and as shown in fig. 6, two curved flow channels 6 are formed on a body of the top plate 14. The two flow channels 6 are communicated with the same external refrigeration equipment 2 in a parallel connection mode, so that the heat conducted by the first cooling liquid is discharged out of the electronic equipment by the second cooling liquid in each flow channel 6, and the heat dissipation efficiency is improved.

When the power consumption of the electronic component is low and the heat dissipation requirement is low, the plurality of flow channels can be communicated with one another, so that the number of closed loops is reduced, and the second cooling liquid is conveniently cooled. When electronic components's consumption is great, when the demand for heat dissipation is high, can be for not intercommunicating between a plurality of runners to form many closed circuit that are used for the circulation of second coolant liquid, promptly, many ways are radial simultaneously the liquid cooling device provides microthermal second coolant liquid, with this improvement radiating efficiency.

As a possible implementation, the flow channel 6 in the present application opens inside the housing body, i.e. may open inside the body of at least one of the housing main body 12, the top plate 14 or the bottom plate 13.

Specifically, as shown in fig. 1, the flow channel 6 is opened in the top plate 14 body, so that the first cooling liquid heated to rise is cooled at the top of the housing, and the first cooling liquid cooled to fall naturally, so that heat convection is formed inside the housing, and the electronic component is further continuously cooled.

Fig. 3 is a schematic longitudinal sectional view of another immersion liquid cooling apparatus provided in the present application. Referring to fig. 3, the difference from fig. 1 is: the top plate 14 body and the shell main body 12 body are respectively provided with the flow channels 6, and the two flow channels are communicated, namely the two flow channels 6 are connected in series and communicated with the same external refrigeration equipment 2 to form a closed loop for circulating the second cooling liquid, so that the heat exchange area of the first cooling liquid and the second cooling liquid is increased, and the heat dissipation efficiency is improved.

Optionally, set up runner 6 in roof 14 body and shell main part 12 body respectively, two runners do not communicate, connect in parallel with refrigeration plant 5 respectively and communicate, form two closed circuit that circulate second cooling liquid, the first cooling liquid that is heated and rises is in the top cooling of casing, the first cooling liquid after the cooling descends naturally thereby the casing is inside to form the thermal convection, and low temperature second cooling liquid is through setting up in the further cooling of the first cooling liquid that descends of runner on the shell main part 12 has accelerated the speed of thermal convection circulation on the one hand, and on the other hand makes the first cooling liquid cooling more abundant to improve the radiating efficiency to electronic components 2.

The flow channels 6 may be straight, curved or spiral in shape. The curved distribution refers to the existence of at least one bend in the flow channel 6, such as a serpentine distribution, a zigzag distribution, a U-shaped distribution, and the like, and the spiral distribution refers to the spiral extension of the flow channel.

For example, as shown in fig. 5, the straight distribution means that the flow channel 6 is straight, i.e., a straight passage is formed between the housing inlet 61 and the housing outlet 62.

In the case where a plurality of flow passages 6 are included in the housing, a distinction can be made between the different flow passages 6 between the main flow passages and the sub-flow passages. The sub-channels are communicated with the main channel, the main channel comprises a liquid inlet main channel and an optional liquid outlet main channel, and the sub-channels are channels which are branched from the liquid inlet main channel and then converged to the liquid outlet main channel or channels which are branched from the liquid inlet main channel and then are not converged and are directly communicated with the external refrigeration equipment 2.

Specifically, figure 8 is the roof spatial structure sketch map that can realize having sprue and subchannel that this application provided, as shown in figure 8, runner 6 includes that a straight line forms the feed liquor sprue 63, a straight line forms out liquid sprue 64 and many

U-shaped subchannels

65, and 14 surfaces of roof are seted up respectively to the port of feed liquor sprue 63 and the port of play liquid sprue 64, with external intercommunication, the second coolant liquid flows in by the feed liquor sprue 63 that sets up in the lower floor roof 14, behind subchannel 65, through setting up in the upper strata out liquid 14 sprue 64 outflow roof 14, circulate to outside refrigeration plant 2.

Referring to fig. 1, two ports of the flow channel 6 on the housing body are a housing liquid inlet 61 and a housing liquid outlet 62, respectively, for the second cooling liquid to flow into the flow channel 6 and flow out of the flow channel 6, respectively, so that the second cooling liquid circulates between the flow channel 6 and the external refrigeration equipment 5.

Optionally, as shown in fig. 1, the housing liquid inlet 61 and the housing liquid outlet 62 are disposed adjacent to each other, so that the flow channel 6 is communicated with the refrigeration equipment 5, and the occupied space is reduced.

Referring to fig. 1, a shell liquid inlet quick coupling 611 is arranged on the shell liquid inlet 61, when the quick coupling is used alone, the liquid in the pipeline can be stopped from flowing outwards, after the two quick couplings are butted, the pipeline forms a passage, the liquid can flow in the formed passage, and after the two butted quick couplings are separated, the pipeline can be immediately sealed, and the liquid in the pipeline is stopped from flowing outwards.

As shown in fig. 1, a housing liquid outlet quick coupling 621 is disposed on the housing liquid outlet 62, a refrigeration liquid inlet quick coupling 511 matched with the housing liquid outlet quick coupling 621 is disposed on the refrigeration liquid inlet 51, and a refrigeration liquid outlet quick coupling 521 matched with the housing liquid inlet quick coupling 611 is disposed on the refrigeration liquid outlet 52.

Optionally, the housing inlet quick coupling 611 is fixedly communicated with the corresponding refrigeration outlet quick coupling 521, and the refrigeration inlet quick coupling 511 is fixedly communicated with the corresponding housing outlet quick coupling 621.

The flow channel 6 is communicated with the refrigeration liquid outlet 52 through the shell liquid inlet 61, and the shell liquid outlet 62 is communicated with the refrigeration liquid inlet 51, so that the flow channel 6 and the refrigeration equipment 5 form a closed loop.

Alternatively, as shown in fig. 1, the second cooling liquid flows into the flow channel 6 from the end close to the electronic component 7 to be cooled, and flows out from the end far away from the electronic component 7 to be cooled, so that the low-temperature second cooling liquid first contacts the high-temperature shell to exchange heat with the high-temperature shell, thereby improving the cooling efficiency of the electronic component to be cooled.

Through the description of the above content, the liquid cooling device that this application provided will treat radiating electronic components and parts encapsulation in the metal system seal shell that is filled with first coolant liquid set up the runner with external cooling equipment intercommunication on seal shell's the body, be full of the second coolant liquid that is used for circulating between seal shell body and external cooling equipment in the runner, the heat direct transfer that electronic components produced when moving is for first coolant liquid, first coolant liquid rethread metal system seal shell gives microthermal second coolant liquid with heat transfer, accomplish electronic components and parts and external heat exchange, the direct first coolant liquid use amount with electronic components and parts contact in the seal shell is little, and mutual independence between each seal shell, be convenient for to electronic components's maintenance, maintenance efficiency has been promoted. On the other hand, the second cooling liquid circulating between the closed cavity and the external cooling equipment can use cheap water or other cheap cooling media, so that the problem that a large amount of expensive cooling liquid is consumed for fully submerged or node type liquid cooling is solved, and the cost of a liquid cooling system is reduced. And through the design of runner position and quantity, promoted the radiating efficiency of liquid cooling system.

The structure of the liquid cooling apparatus provided in the present application is described in detail above with reference to fig. 1 to 8, and next, a blade server and a rack server to which the liquid cooling apparatus of the present application is applied are further described with reference to fig. 9 and 10.

Fig. 9 is a schematic structural diagram of a liquid-cooled blade server according to the present application, where the blade server includes 4 blade servers, each blade server is installed in a housing, and 4 housings share an external refrigeration device to form a set of the above-mentioned submerged cooling liquid device. Wherein, a plurality of blade servers are connected through a backplane 9. The structure of the immersion cooling device is the same as that described in fig. 1 to 8, and is not described again here.

Fig. 10 is a schematic structural diagram of a liquid-cooled rack server rack assembly that can be implemented according to the present application, and as shown in the figure, the rack server rack assembly includes 4 rack servers C. In the method, only power equipment and purifying equipment are arranged between the shell and the external refrigerating equipment, and flow rate monitoring equipment or pressure monitoring equipment is not arranged. The structure of the immersion cooling device is the same as that described in fig. 1 to 8, and is not described herein again.

It should be noted that in the blade server shown in fig. 9 and the rack server shown in fig. 10, different electronic devices can perform cooling of the second cooling liquid by the same external cooling device, so as to conduct the heat generated by the first cooling liquid to the outside of the blade server/rack server. Different electronic equipment can realize the refrigeration of the second cooling liquid through a plurality of external refrigeration equipment, so that the heat dissipation efficiency of the blade which is a server/rack server is improved.

The present application has been described in detail with reference to specific embodiments and illustrative examples, but the description is not intended to limit the application. Those skilled in the art will appreciate that various equivalent substitutions, modifications or improvements may be made to the presently disclosed embodiments and implementations thereof without departing from the spirit and scope of the present disclosure, and these fall within the scope of the present disclosure. The protection scope of this application is subject to the appended claims.

Claims

1. A liquid cooling device is characterized in that the liquid cooling device comprises a shell and external refrigeration equipment;

the shell is made of heat conducting materials; the electronic component to be radiated is arranged in the shell, a first cooling liquid is filled in the shell, and the electronic component to be radiated is placed in the first cooling liquid; the shape of the shell is matched with the physical shape and height of the electronic device to be radiated; the shell comprises a hollow shell main body, a bottom plate and a top plate, wherein at least one of the bottom plate and the top plate is detachably connected with the shell main body;

at least one flow channel is arranged in the shell and is arranged in the top plate body, or the at least one flow channel is arranged in the shell main body, or the at least one flow channel is arranged in the bottom plate body; the at least one flow channel is respectively connected with the external refrigeration equipment to form a loop, second cooling liquid is filled in the loop, and the external refrigeration equipment is used for cooling the second cooling liquid and removing heat conducted from the first cooling liquid to the second cooling liquid to the outside of the shell; the first cooling liquid is not communicated with the second cooling liquid.

2. The device of claim 1, wherein the housing body forms a cavity with the top plate, or the housing body forms a cavity with the bottom plate, or the housing body, the bottom plate, and the top plate form a cavity.

3. The apparatus of claim 2, wherein the cavity is filled with the first cooling fluid.

4. The apparatus of claim 2, wherein the first cooling fluid fills the cavity.

5. The device of claim 2, wherein the at least one flow passage is not in communication with the cavity.

6. The apparatus according to any one of claims 1 to 5, wherein the at least one flow channel and the external cooling device form a loop which further comprises a power device for providing circulating power for the second cooling liquid.

7. The device of any one of claims 1 to 5, wherein the at least one flow channel comprises at least one of a linear profile, a curvilinear profile, or a helical profile.

8. The apparatus of any one of claims 1 to 5, wherein the first cooling fluid and the second cooling fluid are the same or different in material.

9. The apparatus of claim 8, wherein when the first cooling fluid is different from the second cooling fluid in material, the first cooling fluid comprises silicon mineral oil and/or fluorinated fluid; the second cooling liquid comprises water and/or a combination of additives and water.

10. A server comprising a liquid cooling device, wherein the liquid cooling device of any one of claims 1 to 9 is disposed in the server.