CN108901187B

CN108901187B - Liquid immersion cooling cabinet capable of automatically lifting high-density server, system and control method

Info

Publication number: CN108901187B
Application number: CN201810951925.2A
Authority: CN
Inventors: 李锋
Original assignee: Individual
Current assignee: Individual
Priority date: 2018-08-21
Filing date: 2018-08-21
Publication date: 2020-01-07
Anticipated expiration: 2038-08-21
Also published as: CN108901187A

Abstract

The invention is suitable for the technical field of server heat exchange. The invention discloses a liquid immersion cooling cabinet capable of automatically lifting a high-density server, a system and a control method, wherein the liquid immersion cooling cabinet capable of automatically lifting the high-density server is used for containing a first refrigerant for immersion cooling and fixing the server, and the cabinet is provided with a lifting mechanism for lifting the immersed server out of the liquid level during maintenance. Because each cabinet is provided with a plurality of servers, the servers needing to be maintained can be taken out of the cabinet by controlling the lifting mechanism, and the convenience of server maintenance is improved. Meanwhile, the potential safety hazard caused by the fact that the server is taken out of liquid by hands during maintenance and the liquid is scattered on the ground is avoided.

Description

Liquid immersion cooling cabinet capable of automatically lifting high-density server, system and control method

Technical Field

The invention relates to the technical field of server heat exchange, in particular to a liquid immersion cooling cabinet capable of automatically lifting a high-density server, a system and a control method.

Background

An IDC (Internet Data Center ) machine room is generally provided with an overhead floor and a special air conditioning system for the machine room, a server cabinet is placed on the overhead floor, the special air conditioning system for the machine room directly sends cooled air into the front or the inside of the server cabinet through an air supply channel below the overhead floor, and heated air at the rear part of the server cabinet is pumped out through a ceiling air return system of the special air conditioning system for the machine room, so that the heat dissipation requirement of a server is met. Generally, the energy efficiency ratio of the special air conditioner for the IDC room is not high, so that the Power Usage Efficiency (PUE) value of the IDC room is higher. The PUE value is an index for evaluating energy efficiency of a data center, is a ratio of all energy consumed by the data center to energy used by an IT load, and is an inverse ratio of dcie (data center infrastructure efficiency). PUE is equal to data center total equipment energy consumption/IT equipment energy consumption, PUE is a ratio, the benchmark is 2, and the closer to 1, the better the energy efficiency level is.

With the rapid development of cloud storage technology, in recent years, the requirement for heat dissipation and energy conservation of servers is higher and higher due to the higher data density of the IDC machine room, and more than one third of the power consumption of the data center is used for cooling the servers. In addition to the development of new machine room air conditioning technology, more and more users are trying to apply liquid cooling technology in the IDC machine room heat dissipation field.

Chinese patent document CN105487624A discloses a high-density liquid immersion cooling cabinet for servers, which has a good heat dissipation efficiency, but the servers are pulled out from the liquid-cooled server cabinet immersed to a depth of more than 1 meter, so that the difficulty of maintenance is increased.

Disclosure of Invention

One of the main objectives of the present invention is to provide a liquid immersion cooling cabinet, a system and a control method capable of automatically lifting a high-density server, wherein the liquid immersion cooling system capable of automatically lifting a high-density server reduces the maintenance difficulty and improves the convenience and safety of maintenance.

In order to solve the technical problem, the invention provides a liquid immersion cooling cabinet capable of automatically lifting a high-density server, the cooling cabinet is used for accommodating a first refrigerant for immersion cooling and fixing the server, and the cabinet is provided with a lifting mechanism for lifting the immersed server out of the liquid level during maintenance.

The lifting mechanism comprises a lifting tray for supporting the server and a Y-axis moving assembly connected with the lifting tray and enabling the lifting tray to move on a Y axis, the Y-axis moving assembly comprises a Y axial moving part, a Y-axis driving motor, a Y-axis lead screw, a Y-axis linear guide rail and a Y axial moving mechanism bearing member, the Y axial moving mechanism bearing member is connected with one end of the Y-axis linear guide rail, the other end of the Y-axis linear guide rail is connected with the lifting tray, the Y-axis driving motor is connected with one end of the Y-axis lead screw, and the other end of the Y-axis lead screw is connected with the lifting tray.

Further, the lifting mechanism further comprises a Y-axis linear guide rail for guiding the lifting tray.

Furthermore, the lifting mechanism further enables the X-axis moving assembly for lifting the tray to move in the X-axis direction, the X-axis moving assembly comprises an X-axis driving motor, an X-axis lead screw, X-axis linear guide rails and an X-axis moving mechanism fixing component, the number of the X-axis linear guide rails is set to be two parallel linear guide rails, and two ends of each X-axis linear guide rail are respectively fixed with the X-axis moving mechanism fixing component.

The invention also provides a liquid immersion cooling system capable of automatically lifting the high-density server, which comprises at least one cabinet and a cooling host connected with the cabinet to provide power for the heat exchange of the first refrigerant, wherein the cabinet is also provided with a lifting mechanism for lifting the immersed server out of the liquid level during maintenance.

The lifting mechanism comprises a lifting tray for supporting the server and a Y-axis moving assembly connected with the lifting tray and enabling the lifting tray to move on a Y axis, the Y-axis moving assembly comprises a Y-axis moving part, a Y-axis driving motor, a Y-axis lead screw, a Y-axis linear guide rail and a Y-axis moving mechanism bearing member, the Y-axis moving mechanism bearing member is connected with one end of the Y-axis linear guide rail, the other end of the Y-axis linear guide rail is connected with the lifting tray, the Y-axis driving motor is connected with one end of the Y-axis lead screw, and the other end of the Y-axis lead screw is connected with the lifting tray.

Furthermore, the lifting mechanism is also provided with an X-axis moving assembly for moving the lifting tray in the X-axis direction, the X-axis moving assembly comprises an X-axis driving motor, an X-axis lead screw, X-axis linear guide rails and an X-axis moving mechanism fixing component, the number of the X-axis linear guide rails is two parallel linear guide rails, and two ends of each X-axis linear guide rail are respectively fixed with the X-axis moving mechanism fixing component.

Furthermore, the bottom of the cabinet is provided with at least two diversion laminar flow plates which correspond to different server heat dissipation areas and can be disassembled and assembled respectively, and diversion through holes capable of adjusting the flow are distributed in the diversion laminar flow plates.

And a flow guide laminar flow plate is arranged at the bottom of the cabinet, and flow guide through holes and flow guide control mechanisms for controlling the opening and closing of the flow guide through holes are distributed on the flow guide laminar flow plate.

Further, the diversion control mechanism comprises a diversion plate and an adjusting motor for controlling the rotation angle of the diversion plate.

The bottom of the cabinet is provided with a laminar flow diversion mechanism, the laminar flow diversion mechanism comprises a diversion laminar flow plate with diversion through holes and a plurality of movable sliding plates, the sliding plates are provided with adjusting holes matched with the diversion through holes on the diversion laminar flow plate, and the sizes of superposed surfaces of the adjusting holes and the diversion through holes of the movable sliding plates of the X-axis movable assembly are used for adjusting the liquid flow.

The cooling host comprises a heat exchange machine core, a first refrigerant driving pump and a second refrigerant driving pump, a pipeline connecting the server cabinet and the cooling host is arranged below a machine room electrostatic floor, a first refrigerant filter and a second refrigerant filter are arranged at the lowest position of a pipeline loop, and the refrigerant filters are arranged at the input pre-stage of the corresponding refrigerant driving pumps.

Further, the first refrigerant is distributed on at least one server cabinet by uniform liquid level height.

Further, the first refrigerant comprises non-conductive mineral oil.

Further, the second refrigerant includes water or glycol.

Further, the first refrigerant is distributed on the server cabinet at an even liquid level height.

Further, the heat exchanger core comprises a brazed plate heat exchanger core.

The invention also provides a control method of the liquid immersion cooling system, which adjusts the flow of the refrigerant flowing through the server area and comprises the following steps,

determining a server area for adjusting the flow, and determining the server area needing to adjust the flow of the refrigerant according to the workload or the heat productivity of the server;

adjusting the inclination angle of the guide plate corresponding to the server area;

collecting flow signals to judge whether the inclination angle of the guide plate needs to be further adjusted, increasing the inclination angle of the guide plate if the preset target flow is not reached, and finishing flow regulation if the preset target flow is reached.

The liquid immersion cooling cabinet capable of automatically lifting the high-density server is used for containing a first refrigerant for immersion cooling and fixing the server, and the cabinet is provided with a lifting mechanism for lifting the immersed server out of the liquid level during maintenance. Because each cabinet is provided with a plurality of servers, the servers needing to be maintained can be taken out of the cabinet by controlling the lifting mechanism, and the convenience of server maintenance is improved. Meanwhile, the potential safety hazard caused by the fact that the server is taken out of liquid by hands during maintenance and the liquid is scattered on the ground is avoided.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on the drawings without creative efforts.

Fig. 1 is a schematic structural view of an open state of a high-density liquid-cooled server cabinet.

Fig. 2 is a schematic top view of the cabinet door of the high-density liquid-cooling server cabinet when opened.

Fig. 3 is a schematic diagram of a bottom structure of a high density liquid cooling server cabinet.

Fig. 4 is a schematic front view of the cabinet door of the high-density liquid-cooling server cabinet in an open state.

Fig. 5 is a schematic sectional view along the direction C-C in fig. 4.

Fig. 6 is a schematic structural view of a reinforcing framework, a liquid return mechanism and a server lifting mechanism inside the cabinet.

Fig. 7 is a schematic structural view of the liquid return mechanism.

FIG. 8 is a schematic diagram of a server lift mechanism.

Fig. 9 is a schematic view of the flow direction of the refrigerant in the top door of the high density liquid cooling server cabinet.

Fig. 10 is a schematic structural view of a laminar flow guide mechanism.

Fig. 11 is a schematic structural diagram of another embodiment of a laminar flow guide mechanism.

FIG. 12 is a flow control schematic of the diversion control mechanism of FIG. 11.

FIG. 13 is a schematic diagram of a server support structure with attached cutoff plates.

Fig. 14 is a front view of a server support with a flow divider mounted thereon in an open state of a cabinet door of a high density liquid cooled server.

Fig. 15 is a schematic sectional view along the direction C-C in fig. 14.

Fig. 16 is a schematic view of the flow of the cooling medium during the assembly of the server support member.

The reference numerals in the following figures are as follows:

1. a server; 2. a first refrigerant level; 110. a server cabinet; 111. a cabinet liquid inlet;

112. a cabinet liquid outlet; 113. a front baffle; 114. a tailgate; 115. a side dam;

116. a side guard plate; 117. a cover plate; 1171. a flow isolating plate; 1172. an observation window;

1173. a server support; 118. a pneumatic spring support rod; 119. the bottom plate is reinforced and supported;

120. a flow guiding laminar flow plate; 121. a flow guide through hole; 122. assembling a plate;

123. adjusting the motor; 124. a baffle; 125. a baffle drive shaft;

126. the guide plate adjusts the bearing; 130. a liquid return mechanism; 131. a liquid return outlet;

130A, a collecting pipe; 130B, a collecting pipe; 132. a liquid return inlet; 133. a filter screen bracket;

140. a server lifting mechanism; 141. an X-axis drive motor; 142. an X-axis lead screw;

143. an X-axis linear guide rail; 144. an X-axis movement mechanism fixing member;

145. a Y-axis moving part; 1451. a Y-axis drive motor; 1452. a Y-axis lead screw;

1453. a Y-axis linear guide rail; 1454. a Y-axis movement mechanism bearing member;

1455. lifting the tray; 160. a load bearing support;

the objectives, features, and advantages of the present invention will be further explained with reference to the accompanying drawings.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.

The self-elevating liquid immersion cooling cabinet and system of the present invention will be described in further detail with reference to fig. 1-16 of the drawings.

The liquid immersion cooling cabinet capable of automatically lifting the high-density server is used for containing a first refrigerant for immersion cooling and fixing the server, and is provided with a lifting mechanism for lifting the immersed server out of the liquid level during maintenance. The lifting mechanism comprises a lifting tray for supporting the server and a Y-axis moving assembly connected with the lifting tray and enabling the lifting tray to move on a Y axis, the Y-axis moving assembly comprises a Y axial moving part, a Y-axis driving motor, a Y-axis lead screw, a Y-axis linear guide rail and a Y axial moving mechanism bearing member, the Y axial moving mechanism bearing member is connected with one end of the Y-axis linear guide rail, the other end of the Y-axis linear guide rail is connected with the lifting tray, the Y-axis driving motor is connected with one end of the Y-axis lead screw, and the other end of the Y-axis lead screw is connected with the lifting tray. The lifting mechanism further comprises a Y-axis linear guide rail for guiding the lifting tray.

The X-axis moving assembly comprises an X-axis driving motor, an X-axis lead screw, X-axis linear guide rails and an X-axis moving mechanism fixing component, the number of the X-axis linear guide rails is two parallel linear guide rails, and two ends of each X-axis linear guide rail are respectively fixed with the X-axis moving mechanism fixing component.

The automatic lifting liquid immersion cooling system comprises at least one cabinet and a cooling host connected with the cabinet and used for providing conveying power for heat exchange of a first refrigerant, wherein the cabinet is further provided with a lifting mechanism used for lifting an immersed server out of a liquid level during maintenance. And more particularly, at least one server rack 110 for receiving a first cooling medium and submerged in the first cooling medium, the server cabinet 110 can be horizontally disposed when being installed, the plurality of servers 1 can perform hot plug operation perpendicular to the first refrigerant liquid level 2, and is independent from a cooling main machine (not shown in the figure) which is arranged outside the server cabinet and provides conveying power for heat exchange of the first refrigerant through a pipe fitting for conveying the refrigerant, the cooling main machine is internally provided with a brazing plate type heat exchange machine core, a first refrigerant driving pump and a second refrigerant driving pump according to needs, a pipeline connecting the server cabinet 110 and the cooling main machine is laid below a machine room electrostatic floor, the lowest part of the whole pipeline loop is provided with a first refrigerant filter for filtering a first refrigerant and a second refrigerant filter for filtering a second refrigerant, and each refrigerant filter is arranged at the input front stage of the corresponding pump. The server cabinet further comprises a cover plate 117 connected with a hinge, the cover plate 117 is provided with a flow isolating plate 1171 which is covered to divide the liquid level of the cooling liquid into at least two independent areas, each independent area is communicated with a liquid return inlet 132 on the liquid return mechanism 130, and a liquid return outlet 131 of the liquid return mechanism 130 is communicated with the liquid outlet of the cabinet. The flow dividing plate 1171 is of a three-angle or trapezoidal structure, after the cover plate 117 is covered, the flow dividing plate 1171 can divide the liquid level into equal-depth areas, and during heat dissipation, each area is provided with a liquid return inlet 132, so that a first refrigerant absorbing heat can be quickly drained to the liquid return outlet 131 and reach a cooling host, and therefore, cross flow is avoided, and cooling efficiency is improved. The cover plate 117 may be provided with a viewing window 1172 for viewing the liquid level.

Specifically, the first refrigerant is a dielectric refrigerant such as non-conductive mineral oil, the second refrigerant can be water, glycol and other industrial common refrigerants which are easy to obtain, the first refrigerant is uniformly distributed in at least one immersed cooling server cabinet in an equal liquid level, the second refrigerant is thermally coupled with the first refrigerant through a heat exchange core, and then is connected to an outdoor or indoor cooling tower through a corresponding pipeline.

The liquid immersion cooling server cabinet is a server cabinet 110 made of five-surface closed metal plates with open top surfaces, and the server cabinet 110 is provided with a front baffle 113, a rear baffle 114, side baffles and 115. Side guards 116 are provided on both sides of the cover plate 117. The inner wall of the server cabinet 110 is welded with a main bearing support 160 of the server system, the depth direction size of the bearing support 160 is larger than the depth of one server 1, the rear wall of the server cabinet 110 is welded with a flow guiding and arranging groove, and the upper end of the flow guiding and arranging groove is welded on the bearing support 160. A cabinet inlet 111 is welded at the right center of the bottom wall of the server cabinet 110, a cabinet outlet 112 is welded at the edge of the front wall of the right center of the bottom wall of the server cabinet 110, the cabinet inlet 111 and the cabinet outlet 112 are positioned at the same horizontal height at the bottom of the server cabinet 110, and the size of the cabinet inlet 111 and the cabinet outlet 112 protruding out of the bottom wall of the server cabinet 110 is smaller than the height of a bottom plate reinforcing support 119 welded on the bottom wall, so that the trouble of subsequent pipeline connection caused by the fact that the cabinet inlet 111 and the cabinet outlet 112 are damaged due to stress of the bottom plate reinforcing support 119 in the transportation process; the cabinet inlet 111 feeds the coolant into the interlayer at the bottom of the cabinet and then feeds the coolant into the liquid immersion cooling server cabinet through the holes uniformly distributed on the flow guide laminar plate 120, as shown in fig. 5, 9 and 10. The first refrigerant uniformly enters the server 1 through the pores of the shell of the server installed in the server cabinet 110 and then flows out through the pores on the server panel, the shape of the flow guide through hole 121 on the flow guide layer flow plate 120 is not limited, and the flow guide through hole can be set to be a square hole, a round hole or a regular polygon hole according to specific needs.

The total area of the flow guide through holes 121 is equal to the total area of the bottom housing openings of the servers installed in the server cabinet 110, so that the first refrigerant fed from the cabinet liquid inlet 111 can be uniformly fed into the servers 1 to be cooled with the minimum energy consumption, as shown in fig. 9. The back of rack liquid outlet 112 has liquid mechanism 130 back in rack internal weld, and this liquid mechanism 130 that returns includes the pressure manifold 130A that the level set up and the collecting pipe 130B with the vertical setting of pressure manifold intercommunication, be equipped with a plurality of liquid inlet 132 that return on the pressure manifold 130A that the level set up, be equipped with back liquid outlet 131 on the collecting pipe 130B of vertical setting, should return liquid outlet 131 and return liquid inlet 132 intercommunication, should return liquid outlet 131 and rack liquid outlet 112 intercommunication, and every returns liquid inlet 132 and can be equipped with filter screen support 133.

The first refrigerant flow that each server installation region passes through can be controlled through the angle of adjusting the slope of guide plate 124 on the water conservancy diversion laminar flow board 120 to control the flow of first refrigerant, the filter screen support facial make-up is equipped with the filter screen, and the filter screen has the filtering action to the refrigerant of flowing through the server, can prevent that the refrigerant of taking back is further sent into to go in the core part such as heat transfer core, the pump that is more sensitive to small impurity, thereby the protection core part improves heat exchange efficiency.

As shown in fig. 9, the liquid submerges the cooling server racks, and after the cover plate 117 is closed, the flow divider 1171 just separates the liquid in each server installation area from the top surface of the server to the coolant layer at the coolant level, thus, after the refrigerant from bottom to top of the servers in each area passes through the servers, only the refrigerant flows directly to the liquid return inlet 132 on the liquid return mechanism 130 welded on the front arm of the cabinet along the channel partitioned by the two adjacent flow partition plates 1171, the gap between every two liquid return inlets 132 corresponds to the flow partition plates 1171, that is, each flow dividing plate 1171 is divided into at least one liquid-return inlet 132, so that at least one liquid-return inlet 132 is distributed to each of the independent first refrigerant backflow regions divided by the flow dividing plate 1171, thereby improving the fluency of the refrigerant in the entire liquid-cooled server cabinet 110 and reducing the loss of valuable pressure required by unnecessary refrigerant. More importantly, transverse movement of the heated refrigerant flowing through each server between the upper surface of the server and the liquid level of the refrigerant is avoided, cold and heat isolation is well achieved, and the effect of enabling the refrigerant inside the whole liquid cooling server cabinet to be uniform in temperature can be achieved by increasing the flow of the hot area in a targeted mode by matching with a flow adjusting mechanism.

As shown in fig. 2 and 10, the flow guiding laminar flow plate 120 may be formed by splicing a plurality of detachable and separable interlayer partition plates and an assembly plate 122, the size of each interlayer partition plate may be determined according to a specific installation type of the server 1, the servers 1 of the same type are installed in the same area, a space for installing the servers 1 inside the whole server cabinet 110 may be divided into three areas according to needs, the form and size of the flow guiding through holes on each flow guiding laminar flow plate 120 and the form and size of the bottom openings and the top openings of the servers 1 installed in the area are determined, as shown in fig. 10, the holes on the interlayer partition plates may be set into, for example, square holes, round holes, or regular polygonal holes according to specific needs, and the total area of the holes is equivalent to the total area of the bottom openings of the bottom shell of the servers 1 installed in the server cabinet 110, therefore, the refrigerant fed from the first refrigerant inlet is uniformly fed into the servers to be cooled with the minimum consumption of energy.

As shown in fig. 9, a first cooling medium flows through a path of the cross section of the liquid immersion cooling server cabinet 1, the first cooling medium is directly extended into the flow guiding laminar plate 120 at the bottom of the cabinet from the liquid inlet 111 of the server cabinet along a pipeline, and is then uniformly fed into the server 1 through the flow guiding through holes 121 on the flow guiding laminar plate 120 and the through holes corresponding to the openings at the bottom surface and the top surface of the server, the first cooling medium is sucked by the nearest liquid return inlet 132 after passing through the server 1, then flows along the collecting pipe 130A to the liquid return outlet 130A of the collecting pipe 130B, and is finally output from the liquid outlet 112 of the cabinet to the server cabinet 110. The first refrigerant passing through the liquid returning mechanism 130 has the shortest flow path and the smallest flow resistance, and the refrigerant has the highest heat removal efficiency under the same action of the driving pump.

As shown in fig. 11 and 12, another embodiment of an adjustable deflector plate structure is provided. The adjustable flow guiding laminar flow plate 120 is distributed with flow guiding through holes 121 and flow guiding control mechanisms for controlling the opening and closing of the flow guiding through holes 121. The flow guide control mechanism comprises a flow guide plate 124 and a regulating motor 123 for controlling the rotation angle of the flow guide plate 124, wherein the regulating motor 123 is connected with a flow guide plate driving shaft 125, the flow guide plate driving shaft 125 is arranged on a flow guide plate regulating bearing 126, the flow guide plate driving shaft 125 is driven by the regulating motor 123 to drive the flow guide plate 124 to rotate under the matching of the flow guide plate 124 regulating bearing, and the flow size required by each server installation area can be regulated by regulating the inclination angle of the flow guide plate.

The liquid returning mechanism 130 may be configured as a T-shaped structure as required, which is beneficial to uniformly and rapidly guiding the refrigerant separated by the flow divider 1171 to the liquid returning inlet 132. The liquid return outlet 131 is arranged at the edge of the center of the bottom of the cabinet close to the front wall, and the distance from the position to each liquid return inlet 132 is basically equal, so that the refrigerant can flow more uniformly in the refrigerant return pipeline, and the refrigerant flow inside the cabinet of the liquid cooling server is further promoted to be more uniform.

According to the requirement, a laminar flow guiding mechanism is arranged at the bottom of the cabinet 110, the laminar flow guiding mechanism comprises a flow guiding plate 120 with flow guiding through holes 121 and a plurality of movable sliding plates (not shown in the figures), adjusting holes (not shown in the figures) matched with the flow guiding through holes on the flow guiding plate 120 are arranged on the sliding plates, and the size of the superposed surface of the adjusting holes and the flow guiding through holes of the sliding plates is moved through an X-axis moving assembly to adjust the liquid flow.

The server cabinet 110 is further provided with a lifting mechanism 140 for lifting the submerged server out of the liquid surface during maintenance, as required. Specifically, the lifting mechanism 140 is disposed on the front wall of the cabinet and abuts against the liquid returning mechanism 130 and the carrying bracket 160. The lifting mechanism 140 includes an X-axis moving component for moving the lifting tray 1455 in an X-axis direction and a Y-axis moving component for moving the lifting tray 1455 in a Y-axis direction, wherein the Y-axis moving component may be implemented independently or in cooperation with the X-axis moving component.

The X-axis moving assembly comprises an X-axis driving motor 141 and an X-axis lead screw 142; the X-axis linear guide rail 143 and the X-axis movement mechanism fixing component 144, the number of the X-axis linear guide rails 143 is two parallel linear guide rails, and two ends of the X-axis linear guide rail 143 are respectively fixed with the X-axis movement mechanism fixing component 144, so that the working stability is ensured.

The Y-axis moving assembly includes a Y-axis moving unit 145, a Y-axis driving motor 1451, a Y-axis wire bar 1452, a Y-axis linear guide 1453, and a Y-axis moving mechanism bearing member 1454, wherein the Y-axis moving mechanism bearing member 1454 is connected to one end of the Y-axis linear guide 1453, the other end of the Y-axis linear guide 1453 is connected to a lifting tray 1455, the Y-axis driving motor 1451 is connected to one end of the Y-axis wire bar 1452, the other end of the Y-axis wire bar 1452 is connected to the lifting tray 1455, and the lifting tray 1455 is disposed at the bottom of the Y-axis wire bar 1452.

When a certain server needs to be taken out of the liquid cooling cabinet for maintenance, the lifting tray 1455 is moved to a position needing to be located along the X-axis linear guide rail 143 only by controlling the driving of the X-axis driving motor 141, and then the Y-axis driving motor 1451 is controlled to work, so that the lifting tray 1455 moves upwards along the Y-axis linear guide rail 1453 under the action of the Y-axis wire rod 1452 and the guiding action of the Y-axis linear guide rail 1453, the lifting tray 1455 lifts the server 1 out of the first refrigerant liquid level, after the maximum Y-axis stroke is reached, a maintenance worker can open the cover plate 17 of the server 1 only by lifting the server and transversely placing the server between the two server supporting pieces 1173, and the server is fixed through the pneumatic spring supporting rod 118 for maintenance.

As shown in fig. 13, the flow divider 1171 can be mounted directly below the server support 1173, and the depth of the flow divider 1171 is such that it is near the top surface of the server when the flow is divided.

As shown in fig. 14, 15 and 16, another embodiment of the arrangement of the flow divider 1171 is provided to reduce the weight of the cover 117, and to facilitate the maintenance personnel to take out the server 1 and place it on the server support 1173 without touching the cover 117 when the maintenance personnel is taking the server 1 to the maximum height stroke in cooperation with the server lifting mechanism 140. The server support 1173 with the installed cutoff plate 1171 can also be more flexibly arranged in the liquid-cooled cabinet, and as time goes by, the replacement and upgrade of the server can cause the hot area layout of the whole liquid-cooled cabinet to be greatly changed from the original design, and at this time, the installation position of the cutoff plate 1171 installed on the cover plate 117 is removed and replaced, which is obviously not as convenient as directly taking out the server support 1173 with the installed cutoff plate 1171 to be placed as required to divide each server area.

The upper portion of the rear wall of the liquid immersion cooling server cabinet is bent into a Z-shaped structure, a plurality of square holes convenient for a server power line and a network cable to pass through are formed in the horizontal step face, a wiring board with a plurality of inverted J-shaped structures is welded to the lower portion of the step face close to the inner side and the inner side, a wire slot mounting frame is welded to the lower portion of the step face close to the outer side and can be used for arranging and managing the network cable pulled out of the cabinet through a configuration wire slot, a plurality of C-shaped and n-shaped supports are welded to the upper portion of the step face close to the outer side and used for mounting a power distributor PDU (Power Distribution Unit) mounting plate made of insulating materials such as bakelite or PE and the like, and the n-shaped supports are used for mounting a cabinet. The whole rack lower part is designed into the traditional rectangular shape to facilitate the hoisting and maintenance of the server, the upper part of the rack is designed into the inverted triangle shape with the lower part and the higher part, more power lines and network management spaces flow out of the rear part of the rack, the server, a network switch and other equipment are conveniently maintained after the rack of the server is put into use, the rack cover plate can be conveniently opened by the structure with the lower part and the higher part to operate the internal equipment of the rack, and meanwhile, the appearance of the operating personnel standing in the front vision of the rack is kept.

The outer side of the upper part of the rear wall of the liquid immersion cooling server cabinet is provided with a power supply distributor PDU, the lower part of the PDU is provided with a wire groove for managing a power wire, when equipment such as a certain server or a server switch in the cabinet fails and the equipment needs to be lifted out of the refrigerant liquid surface, part of the refrigerants can flow from a high position to a low position along a power line connected to the equipment, the PDU is arranged at the upper part of the step surface of the rear wall of the cabinet, a small amount of refrigerants can drip at the lowest position of the power line passing through the wire passing hole, because the PDU is arranged at a high position, the risk of interruption of the power supply of the equipment caused by the dripping refrigerant is avoided, a liquid collecting tank for receiving the refrigerant is arranged along the lowest part of the rear wall of the cabinet and is made of stainless steel, the top surface of the liquid collecting tank is a stainless steel plate or a stainless steel net which is fully distributed with small round holes, therefore, the collection of the refrigerant under the condition can be ensured, and the small parts in daily maintenance can be ensured not to fall down and be directly soaked in the collected refrigerant.

The liquid immersion cooling server cabinet has the advantages that the wire grooves for managing the network cables are arranged on the outer side of the lower portion of the step surface of the rear wall of the liquid immersion cooling server cabinet, the PDU for supplying power to the cabinet equipment is further arranged on the outer side of the upper portion of the rear wall of the cabinet, wiring of the front wall of the cabinet is greatly simplified through the design, maintenance of a maintainer is very convenient in daily non-dismantling, the possibility that the skin of a daily simple maintenance operator directly contacts with a refrigerant is eliminated to the maximum extent, and the willingness of the liquid immersion cooling server cabinet accepted by general machine room.

The above description is only for the purpose of illustrating a few embodiments of the present invention, and should not be taken as limiting the scope of the present invention, in which equivalent changes, modifications, or scaling up or down, etc. made in accordance with the spirit of the present invention should be considered as falling within the scope of the present invention.

Claims

1. The liquid immersion cooling cabinet capable of automatically lifting the high-density server is used for containing a first refrigerant for immersion cooling and fixing the server, and is characterized in that the cabinet is provided with an upper cover plate with a flow partition plate and a lifting mechanism for lifting the server from immersion cold liquid during maintenance, the upper cover plate is provided with the flow partition plate, and the flow partition plate can separate liquid in each server installation area from the upper surface of the server to a refrigerant layer of a refrigerant liquid level after the upper cover plate is closed.

2. The cabinet for liquid submersion cooling capable of automatically lifting high-density servers according to claim 1, wherein the lifting mechanism comprises a lifting tray for lifting the servers and a Y-axis moving assembly connected with the lifting tray for moving the lifting tray in a Y-axis direction, the Y-axis moving assembly comprises a Y-axis moving part, a Y-axis driving motor, a Y-axis lead screw, a Y-axis linear guide and a Y-axis moving mechanism bearing member, the Y-axis moving mechanism bearing member is connected with one end of the Y-axis linear guide, the other end of the Y-axis linear guide is connected with the lifting tray, the Y-axis driving motor is connected with one end of the Y-axis lead screw, and the other end of the Y-axis lead screw is connected with the lifting tray.

3. The liquid submersion cooling cabinet that can automatically lift high-density servers of claim 2, wherein the lifting mechanism further comprises a Y-axis linear guide that guides a lifting tray.

4. The cabinet of claim 3, wherein the lifting mechanism further comprises an X-axis moving assembly for moving the lifting tray in the X-axis direction, the X-axis moving assembly comprises an X-axis driving motor, an X-axis lead screw, X-axis linear guide rails and X-axis moving mechanism fixing members, the number of the X-axis linear guide rails is two, the two ends of each X-axis linear guide rail are respectively fixed with the X-axis moving mechanism fixing members.

5. The liquid immersion cooling system capable of automatically lifting the high-density servers comprises at least one cabinet and a cooling host connected with the cabinet and used for providing conveying power for heat exchange of a first refrigerant, and is characterized in that the cabinet is provided with an upper cover plate with a flow partition plate and a lifting mechanism used for lifting the servers from immersed cold liquid during maintenance, the upper cover plate is provided with the flow partition plate, and liquid in each server installation area can be separated from the upper surface of the server to a refrigerant layer of the refrigerant liquid level after the upper cover plate is closed.

6. The liquid submersion cooling system capable of automatically lifting a high-density server according to claim 5, wherein the lifting mechanism includes a lifting tray for supporting the server and a Y-axis moving assembly connected to the lifting tray for moving the lifting tray in a Y-axis direction, the Y-axis moving assembly includes a Y-axis moving part, a Y-axis driving motor, a Y-axis lead screw, a Y-axis linear guide, and a Y-axis moving mechanism bearing member, wherein the Y-axis moving mechanism bearing member is connected to one end of the Y-axis linear guide, the other end of the Y-axis linear guide is connected to the lifting tray, the Y-axis driving motor is connected to one end of the Y-axis lead screw, and the other end of the Y-axis lead screw is connected to the lifting tray.

7. The liquid submersion cooling system that can automatically lift high-density servers of claim 6, wherein the lift mechanism further comprises a Y-axis linear guide that guides the lift tray.

8. The liquid submersion cooling system capable of automatically lifting a high-density server according to claim 7, wherein the lifting mechanism further comprises an X-axis moving assembly for moving the lifting tray in the X-axis direction, the X-axis moving assembly comprises an X-axis driving motor, an X-axis lead screw, an X-axis linear guide rail and an X-axis moving mechanism fixing member, the number of the X-axis linear guide rails is two parallel linear guide rails, and two ends of the X-axis linear guide rail are respectively fixed with the X-axis moving mechanism fixing member.

9. The system of claim 5, wherein at least two diversion laminar flow plates are disposed on the bottom of the cabinet, and the diversion laminar flow plates are detachably mounted to correspond to different heat dissipation areas of the server, and diversion through holes capable of adjusting flow rate are distributed on the diversion laminar flow plates.

10. The system of claim 5, wherein a flow guiding laminar flow plate is disposed at the bottom of the cabinet, and the flow guiding laminar flow plate is provided with flow guiding through holes and flow guiding control mechanisms for controlling the flow guiding through holes to open and close.

11. The liquid submersion cooling system that can automatically lift high-density servers according to claim 10, wherein the diversion control mechanism includes a diversion plate and an adjustment motor that controls a rotation angle of the diversion plate.

12. The liquid submersion cooling system that can automatically lift high-density servers according to claim 8, wherein: the bottom of the cabinet is provided with a laminar flow diversion mechanism, the laminar flow diversion mechanism comprises a diversion laminar flow plate with diversion through holes and a plurality of movable sliding plates, the sliding plates are provided with adjusting holes matched with the diversion through holes on the diversion laminar flow plate, and the sizes of superposed surfaces of the adjusting holes and the diversion through holes of the movable sliding plates are adjusted through an X-axis movable assembly.

13. The liquid submersion cooling system that can automatically lift high-density servers according to claim 5, wherein: the cooling host comprises a heat exchange machine core, a first refrigerant driving pump and a second refrigerant driving pump, a pipeline connecting the server cabinet and the cooling host is arranged below the machine room static floor, a first refrigerant filter and a second refrigerant filter are arranged at the lowest position of a pipeline loop, and the refrigerant filters are arranged at the input front stage of the corresponding refrigerant driving pumps.

14. The liquid submersion cooling system that can automatically lift high-density servers of claim 13, wherein: the first cooling medium is distributed on at least one server cabinet by the uniform equal liquid level height.