Server and immersion liquid cooling system

Abstract

The present disclosure provides a server and an immersion liquid cooling system. The server comprises a chassis housing, the chassis housing containing a cooling liquid. The chassis housing comprises a chassis body and an upper cover coupled to the chassis body. One of an end face of the chassis body facing the upper cover and an end face of the upper cover facing the chassis body is provided with an electromagnet, and the other is provided with a magnetic member for magnetic attraction with the electromagnet, so that the chassis body and the upper cover are sealingly connected by means of magnetic attraction force.

Description

A server and an immersion liquid cooling system

[0001] Cross-reference to Related Applications

[0002] This application claims the benefit of and priority to Chinese Patent Application No. 202411377274.2, filed September 30, 2024, entitled “A Server and an Immersion Liquid Cooling System,” the entire contents of which are incorporated herein by reference. TECHNICAL FIELD

[0003] The present disclosure relates to a server, in particular to the field of server heat dissipation technology. In addition, the present disclosure also relates to an immersion liquid cooling system comprising the above-mentioned server. BACKGROUND

[0004] The immersion liquid cooling technology innovates the cooling method of data center through precise design and rigorous implementation of engineering technology. When electronic equipment is completely immersed in a specially designed liquid with good insulation and high heat transfer performance, the heat generated by the equipment is directly transferred to the cooling liquid, and the heat is taken away through the circulation of the cooling liquid.

[0005] The conventional immersion liquid cooling immerses the server in a liquid cooling tank, causing waste of cooling liquid and low space utilization. At the same time, when a single server node needs to be maintained, the traditional liquid cooling tank needs to be repeatedly opened, which will cause the volatilization and waste of cooling liquid.

[0006] For the immersion liquid cooling system rack deployment structure, each server case is immersed separately, and the case is generally filled with cooling liquid. In order to realize the heat exchange circulation of the liquid, the cooling liquid may have a certain pressure, so the case also needs to have a certain pressure bearing capacity, which has a high sealing requirement for the case. The existing related technology is to make the case into a mechanical sealing structure, fix a rubber sealing ring on the case base, and tighten the cover and the base by locking screw method to realize sealing. This sealing method usually needs to fix dozens of screws along the edge of the case, and for a larger server case, even close to hundreds of screws. Each screw needs to be locked or disassembled by human, and the labor cost is high when a large number of servers are deployed in the data center. SUMMARY

[0007] The first aspect of the present disclosure provides a server, comprising a case shell configured to hold cooling liquid, the case shell comprising a case body and an upper cover coupled to the case body;

[0008] One of the end face of the case body facing the upper cover and the end face of the upper cover facing the case body is provided with an electromagnet, and the other is provided with a magnetic attraction piece for cooperating with the electromagnet; so that the case body and the upper cover are sealingly coupled by magnetic attraction force.

[0009] In some embodiments, the electromagnet comprises a core and a spiral coil wound around the outer periphery of the core.

[0010] The end surface of the cabinet shell towards the upper cover is provided with a plurality of mounting holes for mounting the electromagnet, and the electromagnet is vertically inserted into the mounting hole.

[0011] In some embodiments, the side wall of the mounting hole is provided with a through hole for the wire of the spiral coil to pass out; the wires at both ends of the same spiral coil pass out through the same through hole.

[0012] In some embodiments, the depth of the mounting hole is greater than the height of the electromagnet, and the end surface of the upper cover towards the cabinet body is provided with a magnetic attraction member, and when the electromagnet is attracted to the magnetic attraction member, the magnetic attraction member is at least partially accommodated in the mounting hole.

[0013] In some embodiments, the server further comprises a current control circuit and a first controller, the electromagnet is connected to the current control circuit, the current control circuit comprises at least two parallelly connected regulating branches, the regulating branch comprises a control switch and a plurality of resistors connected in series, and the first controller is configured to control the opening / closing of the control switch to control the number of resistors connected in parallel with the electromagnet, thereby adjusting the current flowing through the electromagnet.

[0014] In some embodiments, a first pressure detection member for detecting the pressure of the cooling liquid is arranged in the cabinet shell, and the first pressure detection member transmits the value of the detected pressure to the first controller, and the first controller adjusts the current flowing through the electromagnet according to the value of the pressure and the number of electromagnets.

[0015] In some embodiments, the current control circuit is provided with an indicator lamp in series with the electromagnet, and when the electromagnet is in the energized state, the corresponding indicator lamp of the electromagnet is lit, and the indicator lamp is arranged one-to-one with the electromagnet.

[0016] In some embodiments, a liquid level sensor is arranged in the cabinet shell, and the liquid level sensor is used to detect the liquid level of the cooling liquid in the cabinet shell, and when the value of the liquid level detected by the liquid level sensor is lower than the preset minimum liquid level, an indication is given to supplement the cooling liquid; when the liquid level information detected by the liquid level sensor is higher than the preset maximum liquid level, an indication is given to stop supplementing the cooling liquid.

[0017] In some embodiments, a first sealing groove and a sealing ring mounted in the first sealing groove are arranged in the end surface of the cabinet body towards the upper cover, close to the inner side surface of the cabinet body.

[0018] The end surface of the cabinet body towards the upper cover is provided with a mounting hole close to the outer side wall of the cabinet body.

[0019] In some embodiments, the mounting holes are evenly distributed along a circumference of an end surface of the upper cover.

[0020] The second aspect of the present disclosure provides an immersion liquid cooling system, comprising a heat exchange device, a first water distribution device, a second water distribution device, and a plurality of servers as described above.

[0021] The server case body is provided with an inlet hole and an outlet hole, the first water distribution device is connected to the inlet hole and a low-temperature cooling liquid outlet of the heat exchange device, and the second water distribution device is connected to the outlet hole and a high-temperature cooling liquid inlet of the heat exchange device.

[0022] In some embodiments, the immersion liquid cooling system further comprises a filter device, a water inlet end of the filter device is connected to the heat exchange device, a water outlet end of the filter device is connected to the first water distribution device, and the filter device is provided with a filter screen and a PH probe.

[0023] In some embodiments, the immersion liquid cooling system further comprises a liquid supplement tank, a third water distribution device, and a suction pump arranged in the liquid supplement tank, wherein the server case body is provided with a liquid supplement and discharge port, one end of the third water distribution device is connected to the liquid supplement tank, and the other end is connected to the liquid supplement and discharge port.

[0024] The suction pump is configured to pump out the cooling liquid in the case body to the liquid supplement tank via the liquid supplement and discharge port, and pump the cooling liquid in the liquid supplement tank into the case body via the third water distribution device.

[0025] In some embodiments, a first electromagnetic valve is arranged at the connection between the first water distribution device and the inlet hole.

[0026] A second electromagnetic valve is arranged at the connection between the third water distribution device and the liquid supplement and discharge port.

[0027] A third electromagnetic valve is arranged at the connection between the second water distribution device and the outlet hole.

[0028] In some embodiments, the immersion liquid cooling system further comprises a backup power supply, which is electrically connected to the electromagnet, the first electromagnetic valve, the second electromagnetic valve, the heat exchange device, the first water distribution device, the second water distribution device, the third water distribution device, and the suction pump on the case body.

[0029] In some embodiments, the immersion liquid cooling system further comprises a power failure detection member and a second controller, the power failure detection member is used to detect whether the main power supply in the server is powered off, when the power failure detection member detects that the main power supply is in a power-off state, the power-off information is sent to the second controller, and the second controller controls the backup power supply to supply power.

[0030] In some embodiments, a control button is further included, the control button is electrically connected to the first electromagnetic valve and the second electromagnetic valve, and the control button is used to control the first electromagnetic valve and the second electromagnetic valve to be closed.

[0031] In some embodiments, the immersion liquid cooling system further comprises a plurality of control buttons for controlling the opening and closing of the corresponding first electromagnetic valve or the corresponding second electromagnetic valve.

[0032] In some embodiments, a liquid level sensor is arranged in the case shell, and the liquid level sensor is used to detect the liquid level of the cooling liquid in the case shell. When the value of the liquid level detected by the liquid level sensor is lower than the preset minimum liquid level, the suction pump is controlled to supplement the cooling liquid into the case shell. When the liquid level information detected by the liquid level sensor is higher than the preset maximum liquid level, the suction pump is controlled to stop supplementing the cooling liquid into the case shell.

[0033] In some embodiments, the case shell is provided with an exhaust valve, and when the suction pump pumps out the cooling liquid from the case shell or pumps the cooling liquid into the case shell, the exhaust valve is configured to balance the air pressure in the case shell. BRIEF DESCRIPTION OF DRAWINGS

[0034] In order to more clearly illustrate the embodiments of the present disclosure, the drawings required to be used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present disclosure, and other drawings can be obtained by those skilled in the art without creative labor on the basis of these drawings.

[0035] FIG. 1 is a structural schematic diagram of a server according to an embodiment of the present disclosure;

[0036] FIG. 2 is a structural schematic diagram of a current control circuit according to an embodiment of the present disclosure;

[0037] FIG. 3 is a structural schematic diagram of an electromagnet according to an embodiment of the present disclosure;

[0038] FIG. 4 is a schematic diagram of the magnetic field lines of an electromagnet according to an embodiment of the present disclosure;

[0039] FIG. 5 is a structural schematic diagram of an immersion liquid cooling system according to an embodiment of the present disclosure. DETAILED DESCRIPTION

[0040] The technical solutions in the embodiments of the present disclosure will be described clearly and completely below with reference to the drawings in the embodiments of the present disclosure. Obviously, the described embodiments are only some of the embodiments of the present disclosure, not all the embodiments. Based on the embodiments in the present disclosure, all other embodiments obtained by those skilled in the art without creative labor are within the protection scope of the present disclosure.

[0041] The first aspect of the present disclosure aims to provide a server, which realizes the sealing of the case body and the upper cover through the magnetic attraction force of the electromagnet, can meet the sealing requirements of the immersion liquid cooling system, and the sealing process is simple to operate.

[0042] Another aspect of the present disclosure aims to provide an immersion liquid cooling system comprising the above server.

[0043] The server 1 comprises a cabinet shell 11 configured to hold cooling liquid, the cabinet shell 11 comprising a cabinet body 111 and an upper cover 112 buckled to the cabinet body 111; one of the end face of the cabinet body 111 facing the upper cover 112 and the end face of the upper cover 112 facing the cabinet body 111 is provided with an electromagnet 1111, and the other is provided with a magnetic attraction piece for cooperating with the electromagnet 1111; so that the cabinet body 111 and the upper cover 112 are sealingly connected by magnetic attraction force.

[0044] It should be noted that the cabinet shell 11 of the server 1 in the present disclosure is applied to the field of immersion liquid cooling technology, and in actual use, rack deployment makes it possible to maintain individual servers 1, further saving the amount of cooling liquid.

[0045] It should be noted that the upper cover 112 in the present disclosure is buckled and openable relative to the cabinet body 111, and in actual use, the sealing connection between the upper cover 112 and the cabinet body 111 can be achieved by the magnetic attraction force of the electromagnet 1111 and the magnetic attraction piece alone, or other structures can also be provided to provide pre-tightening force, specifically, it can be a buckle structure, etc., and the specific determination is based on the actual situation, which will not be described here.

[0046] In actual use of the server 1, first, the cooling liquid needs to be added into the cabinet shell 11, and the electromagnet 1111 and the magnetic attraction piece are installed into the cabinet shell 11. Then, the upper cover 112 is buckled to the appropriate position, so that the electromagnet 1111 corresponds to the magnetic attraction piece at the corresponding position; control the electromagnet 1111 to be powered on to generate magnetic attraction force, and the electromagnet 1111 adsorbs the magnetic attraction piece, so that the upper cover 112 and the cabinet body 111 are sealingly connected.

[0047] Compared with the operation process of screwing multiple screws in the prior art, the sealing of the cabinet body 111 and the upper cover 112 is achieved by the electromagnet 1111, which avoids the repeated operation of screwing the screws, simplifies the operation process, and can effectively shorten the time for achieving sealing and unsealing, meet the sealing requirements of the immersion liquid cooling system, and the sealing process is simple. In addition, the server 1 provided by the present disclosure can adjust the magnetic attraction force between the cabinet body 111 and the upper cover 112 by adjusting the number of installed electromagnets 1111 or the size of the current flowing through the electromagnets 1111 during the sealing process, thereby adjusting the sealing pressure. The adjustment process is convenient.

[0048] Alternatively, the electromagnet 1111 can also include a core and a spiral coil wound around the outer periphery of the core; the end surface of the cabinet shell 11 facing the upper cover 112 is provided with a plurality of mounting holes 1112 for mounting the electromagnet 1111, the vertical insertion of the electromagnet 1111 in the mounting hole 1112; the side wall of the mounting hole 1112 is provided with a through hole for the wire of the spiral coil to pass out; the wires at both ends of the same spiral coil pass out of the same through hole.

[0049] As shown in FIG. 1, the end surface of the cabinet shell 11 facing the upper cover 112 is uniformly provided with a plurality of mounting holes 1112, and the electromagnet 1111 is placed in the mounting hole 1112. In order to facilitate the wire of the electromagnet 1111 to pass out, as shown in FIG. 3, one end of the wire can be bent, so that both ends of the wire pass out of the same through hole, which can effectively reduce the number of through holes, and facilitate the connection of the wire of the electromagnet 1111. At the same time, since the through hole needs to be sealed, the reduction of the number of through holes can reduce the sealing workload and further save costs.

[0050] The electromagnet 1111 includes a core and a spiral coil wound around the outer periphery of the core, as shown in FIG. 4. After the electromagnet 1111 is placed in the mounting hole 1112, the magnetic field generated by the electromagnet 1111 is mostly concentrated inside the coil and does not extend into the cabinet shell 11, nor does it cause electromagnetic interference with the devices inside the cabinet shell 11, affecting the normal operation of the remaining components, especially the mechanical hard disk. In addition, the magnetic field generated by such a coil is similar to the magnetic field of a bar magnet, which can precisely contact the magnetic attraction element 1121 above the cabinet shell 11, and the magnetic force is higher.

[0051] It should be noted that the electromagnet 1111 and the magnetic attraction element 1121 on the upper cover 112 can be arranged one by one, and the magnetic force sealing between the upper cover 112 and the cabinet body 111 is realized by the attraction of the electromagnet and the magnetic attraction element 1121. The magnetic attraction element 1121 in the upper cover 112 can be made of ferromagnetic material, which includes iron, cobalt, nickel and alloys containing these elements. In terms of structural design, since the ferromagnetic material of the upper cover 112 has a certain thickness, it needs to be completely fitted into the mounting hole 1112 of the cabinet body 111 where the electromagnet 1111 is placed. Therefore, when designing the depth of the mounting hole 1112, the thickness space of the magnetic material of the upper cover 112 needs to be left after placing the electromagnet 1111, so that the upper cover 112 and the cabinet body 111 are completely fitted.

[0052] Specifically, the depth of the mounting hole 1112 can be greater than the height of the electromagnet 1111, the end surface of the upper cover 112 facing the cabinet body 111 is provided with a magnetic attraction element, and when the electromagnet 1111 is attracted to the magnetic attraction element, the magnetic attraction element is at least partially located in the mounting hole 1112.

[0053] In addition, the magnetic attraction member can be provided in an integrated structure, or a plurality of electromagnets 1111 correspond to the same magnetic attraction member, which is determined according to actual conditions, and will not be described here.

[0054] As shown in FIG. 3, when the two ends of the line segment of the electromagnet 1111 are collected and led out by the side wall of the case shell 11, there will be a plurality of coils on the wall surface of the case shell 11. The following wire arrangement method can be considered: 10 coils can be taken as a group, the positive and negative poles are connected in parallel, and then a positive and a negative connector are formed, which are inserted into the connector. Design a power adapter, take power from the server 1, insert the connector into the power adapter, and complete the coil power supply. Of course, other connection methods can also be used, which is determined according to actual conditions, and will not be described here.

[0055] The server 1 can also include a current control circuit 12 and a first controller. The electromagnet 1111 is connected to the current control circuit 12. The current control circuit 12 includes at least two parallelly connected regulating branches. The regulating branch includes a series-connected resistor 121 and a control switch 122. The opening and closing of the control switch 122 is controlled by the first controller to control the number of parallelly connected resistors 121 connected to the electromagnet 1111, so as to regulate the current flowing through the electromagnet 1111.

[0056] As shown in FIG. 2, the current control circuit 12 where the electromagnet 1111 is located includes three parallelly connected regulating branches. Each regulating branch includes a control switch 122 and a plurality of series-connected resistors 121. The opening and closing of the control switch 122 is controlled by the first controller to adjust the number of resistors 121 connected in the regulating branch, so as to regulate the resistors 121 in the current control circuit 12, and then regulate the current in the current control circuit 12. When the current of the coil of the electromagnet 1111 changes, the magnetic field strength generated by the electromagnet 1111 will change, and then the magnetic attraction force generated by the electromagnet 1111 will change.

[0057] In actual use, the number of resistors 121 connected in the current control circuit 12 can be adjusted to adjust the current of the coil, and then the magnetic attraction force of the electromagnet 1111 can be adjusted according to different actual conditions.

[0058] It should be noted that the control switch 122 can be provided as a MOS tube (Metal-Oxide-Semiconductor Field-Effect Transistor, Metal-Oxide-Semiconductor Field-Effect Transistor). The current is controlled by field effect, which has high input impedance, low noise, fast switching and other characteristics.

[0059] The first controller can be set as an MCU (Microcontroller Unit) on the power control board. Since the pressure sensor is arranged, the fluid pressure in the case can be fed back to the MCU in real time. The MCU controls the opening and closing of the control switch 122 according to the fluid pressure in the case, thereby controlling the magnetic attraction force of the electromagnet 1111.

[0060] Alternatively, a first pressure detection member for detecting pressure information of the cooling liquid can be arranged in the case shell 11. The first pressure detection member transmits the detected pressure information to the first controller. The first controller adjusts the current flowing through the electromagnet 1111 according to the pressure information and the number of electromagnets 1111.

[0061] In actual use, the pressure between the upper cover 112 and the case body 111 needs to be adjusted according to the different pressures of the cooling liquid in the case shell 11. When the pressure of the cooling liquid in the case shell 11 increases, the pressure between the upper cover 112 and the case body 111 needs to be increased to meet the sealing requirement. When the pressure of the cooling liquid in the case shell 11 decreases, the pressure between the upper cover 112 and the case body 111 can be appropriately reduced to save power consumption.

[0062] Specifically, the pressure between the upper cover 112 and the case body 111 needs to be calculated according to the magnetic attraction force between the electromagnet 1111 and the magnetic attraction member 1121. The magnetic attraction force between the electromagnet 1111 and the magnetic attraction member 1121 is positively correlated with the magnetic field strength of the electromagnet 1111. The formula for calculating the magnetic field strength is H=N×I / Le, where H is the magnetic field strength, the unit is A / m; N is the number of turns of the excitation coil; I is the excitation current, the unit is A; Le is the effective magnetic path length of the test sample, the unit is m. Therefore, under the premise of determining the number of turns of the coil, the magnetic force can be dynamically adjusted by the current. Then the sealing pressure between the upper cover 112 and the case body 111 is adjusted.

[0063] In actual control, the corresponding relationship between the current of the coil of the electromagnet 1111 and the pressure information detected by the first pressure detection member needs to be established. Specifically, it can be obtained through multiple tests or strict calculation, and the corresponding relationship between the current of the coil of the electromagnet 1111 and the pressure information detected by the first pressure detection member is pre-stored in the first controller. In actual use, the specific adjustment steps are as follows:

[0064] First, control the first pressure detection member to obtain the pressure information of the cooling liquid, and transmit the pressure information to the first controller;

[0065] Second, according to the pressure information and the pre-stored corresponding relationship between the current of the coil of the electromagnet 1111 and the pressure information detected by the first pressure detection member, a preset current is obtained.

[0066] Thirdly, it is judged whether the preset current is consistent with the current of the coil of the electromagnet 1111. If yes, the current is maintained. If no, the number of the resistance 121 connected in the current control circuit 12 is adjusted until the preset current is consistent with the current of the coil of the electromagnet 1111.

[0067] It should be noted that in the actual adjustment process, the preset current can be a current value or a current range, which is determined according to the actual situation and will not be described here.

[0068] The size of the current in the electromagnet 1111 is controlled by the pressure information detected by the first pressure detection member, so that the pressure between the upper cover 112 and the box body 111 corresponds to the pressure information detected by the first pressure detection member, avoiding the situation that the pressure between the upper cover 112 and the box body 111 is too small to maintain the seal or the pressure between the upper cover 112 and the box body 111 is too large to waste energy.

[0069] On the basis of the above embodiment, an indicator lamp can be arranged in series with the electromagnet 1111 in the current control circuit 12. When the electromagnet 1111 is in the energized state, the indicator lamp corresponding to the electromagnet 1111 is lit. The indicator lamp is arranged in one-to-one correspondence with the electromagnet 1111.

[0070] Specifically, the indicator lamp can be arranged on the outside of the box body 111, which facilitates observation of the on-off state of the electromagnet 1111.

[0071] In actual use, there are individual electromagnets 1111 that are individually powered off. In order to obtain information about the powered-off electromagnet 1111 in time, an indicator lamp can be arranged in series with the electromagnet 1111 in the current control circuit 12. Whether the electromagnet 1111 is powered off can be judged by the light and dark of the indicator lamp.

[0072] On the other hand, a pressure sensor can also be arranged at the position where the electromagnet 1111 and the corresponding magnetic attraction member are attracted, and whether the corresponding electromagnet 1111 is powered off can be judged by the attraction pressure detected by the pressure sensor. The specific determination is based on the actual situation.

[0073] By arranging the indicator lamp, the powered-off state of the electromagnet 1111 can be obtained in time, which facilitates the operator to obtain the powered-off information of the electromagnet 1111 in time and adjust the current of the remaining electromagnets 1111 in time to meet the overall sealing requirement.

[0074] On the basis of the above-mentioned embodiments, a second pressure detection member can be arranged in at least one of the end surface of the box body 111 facing the upper cover 112 and the end surface of the upper cover 112 facing the box body 111, and the second pressure detection member is used to detect the pressure information between the box body 111 and the upper cover 112.

[0075] The second pressure detection member can directly obtain the pressure information between the upper cover 112 and the box body 111, and according to the pressure information obtained by the second pressure detection member and the pressure information obtained by the first pressure detection member, the pressure between the upper cover 112 and the box body 111 and the pressure of the cooling liquid in the case body 11 can be directly obtained.

[0076] In actual use, the corresponding relationship between the pressure between the upper cover 112 and the box body 111 and the pressure information detected by the first pressure detection member needs to be established. Specifically, it can be obtained through multiple tests or strict calculation, and the corresponding relationship between the pressure between the upper cover 112 and the box body 111 and the pressure information detected by the first pressure detection member is pre-stored in the first controller. In actual use, the specific adjustment steps are as follows:

[0077] First, control the first pressure detection member to obtain the first pressure information of the cooling liquid and transmit the first pressure information to the first controller; control the second pressure detection member to obtain the second pressure information of the cooling liquid and transmit the second pressure information to the first controller;

[0078] Second, according to the corresponding relationship between the pressure between the upper cover 112 and the box body 111 and the pressure information detected by the first pressure detection member, it is judged whether the first pressure information and the second pressure information correspond. If yes, the current of the electromagnet 1111 is maintained; if the second pressure information is greater than the preset pressure corresponding to the first pressure information, the current of the coil of the electromagnet 1111 is controlled to be reduced; if the second pressure information is less than the preset pressure corresponding to the first pressure information, the current of the coil of the electromagnet 1111 is controlled to be increased.

[0079] The second pressure sensor can directly detect the pressure between the upper cover 112 and the box body 111. In actual use, errors caused by other factors in the process of predicting the pressure between the upper cover 112 and the box body 111 by adjusting the current of the electromagnet 1111 can be avoided, and the corresponding accuracy of the pressure of the cooling liquid and the sealing pressure between the upper cover 112 and the box body 111 can be effectively improved.

[0080] Alternatively, a liquid level sensor can also be arranged in the case shell 11, and the liquid level sensor is used to detect the liquid level of the cooling liquid in the case shell 11. When the liquid level information detected by the liquid level sensor is lower than the preset minimum liquid level, the control is performed to supplement the cooling liquid into the case shell 11. When the liquid level information detected by the liquid level sensor is higher than the preset maximum liquid level, the control is performed to stop supplementing the cooling liquid into the case shell 11.

[0081] Specifically, a first liquid level sensor can be arranged at the minimum liquid level in the case shell 11, and a second liquid level sensor can be arranged at the maximum liquid level in the case shell 11. Of course, the liquid level sensor can also be arranged in other ways, which is determined according to the actual situation and will not be described here.

[0082] Alternatively, a first sealing groove and a sealing ring 1113 mounted in the first sealing groove can also be arranged in the position of the end surface of the box body 111 close to the inner side surface of the box body 111 towards the upper cover 112. The mounting hole 1112 is arranged in the position of the end surface of the box body 111 close to the outer side wall of the box body 111 towards the upper cover 112, and the mounting holes 1112 are uniformly distributed along the circumference of the end surface of the box body 111 towards the upper cover 112.

[0083] In actual use, the mounting hole 1112 is arranged close to the outer side surface of the box body 111, which facilitates the outgoing line of the electromagnet 1111. The sealing ring 1113 is arranged close to the inner side surface of the box body 111, which is conducive to improving the sealing effect.

[0084] Another aspect of the present disclosure also provides an immersion liquid cooling system comprising a heat exchange device 2, a first water distribution device 3, a second water distribution device 4, and a plurality of servers 1 of any one of the above. The case shell 11 of the server 1 is provided with an inlet hole 113 and an outlet hole 114. The first water distribution device 3 is connected to the inlet hole 113 and the low-temperature cooling liquid outlet of the heat exchange device 2. The second water distribution device 4 is connected to the outlet hole 114 and the high-temperature cooling liquid inlet of the heat exchange device 2.

[0085] In actual use, the cooling liquid in the case shell 11 enters the second water distribution device 4 through the outlet hole 114, and then enters the heat exchange device 2 from the other end of the second water distribution device 4. The cooling liquid releases heat in the heat exchange device 2, and then enters the case shell 11 through the first water distribution device 3 and the inlet hole 113 after the temperature is reduced. Such a cycle realizes the cooling of the cooling liquid in the case shell 11.

[0086] The case shell 11 of the server 1 is provided with an exhaust valve 116. During the liquid inlet and liquid outlet process, the exhaust valve 116 can be used for exhaust or air intake.

[0087] The first electromagnetic valve 7 is arranged at the connection between the first water diversion device 3 and the liquid inlet hole 113, and the third electromagnetic valve is arranged at the connection between the second water diversion device 4 and the liquid outlet hole 114. In actual use, the replacement of the cooling liquid in the case body 11 can be controlled by controlling the opening and closing of the first electromagnetic valve 7 and the third electromagnetic valve.

[0088] Specifically, the cooling liquid replacement time interval can be set, and the cooling liquid in the case body 11 is replaced every preset time interval, or the cooling liquid in the case body 11 can be replaced in real time. The specific method is determined according to the actual situation, which is not described here.

[0089] Alternatively, the immersion liquid cooling system can further include a liquid supplement tank 5, a third water diversion device 6, and a suction pump 51 arranged in the liquid supplement tank 5. The case body 11 of the server 1 is provided with a liquid supplement and discharge port 115. One end of the third water diversion device 6 is connected to the liquid supplement tank 5, and the other end is connected to the liquid supplement and discharge port 115. When the suction pump 51 is in the water suction state, the cooling liquid in the case body 11 can flow out of the liquid supplement and discharge port 115 to the liquid supplement tank 5. When the suction pump 51 is in the water suction state, the cooling liquid in the liquid supplement tank 5 can be supplemented into the case body 11 through the third water diversion device 6. The second electromagnetic valve 8 is arranged at the connection between the third water diversion device 6 and the liquid supplement and discharge port 115.

[0090] In actual use, by controlling the suction state of the suction pump 51, the liquid in the case body 11 can be supplemented, or the cooling liquid in the case body 11 can be pumped out.

[0091] As shown in FIG. 5, the immersion liquid cooling system further includes a backup power supply 9, which is electrically connected to the electromagnet 1111, the first electromagnetic valve 7, the second electromagnetic valve 8, the heat exchange device 2, the first water diversion device 3, the second water diversion device 4, the third water diversion device 6, the suction pump 51, and other electrical equipment on the case body 11.

[0092] When a power failure occurs, the case body 11 will lose the sealing function. In this case, since the backup power supply 9 has been arranged in the cabinet, as shown in FIG. 1, the backup power supply 9 will also supply power to the server 1, the automatic liquid feeding and discharging controller, the heat exchange device 2, and other systems. At this time, the total controller 10 can first cut off the connection pipeline of the heat exchange device 2, and then start the automatic liquid feeding and discharging system to discharge the liquid in the server 1 to the liquid supplement tank 5. After the cooling liquid in the server 1 is completely discharged, the power-off operation is performed to prevent the sudden power failure of the data center and the liquid overflow.

[0093] In order to obtain the power failure in time, a power failure detection member and a second controller can also be arranged. The power failure detection member is used to detect whether the main power supply in the server 1 is powered off. When the power failure detection member detects that the main power supply is in the power-off state, the power-off information is sent to the second controller, and the second controller controls the backup power supply 9 to supply power.

[0094] Alternatively, the immersion liquid cooling system can also be provided with a control button 101, the control button 101 being electrically connected with the first electromagnetic valve 7 and the second electromagnetic valve 8, and the control button 101 being used for one-key closing of the first electromagnetic valve 7 and the second electromagnetic valve 8; or, the immersion liquid cooling system further includes control buttons, the number of the control buttons being multiple, and the control buttons being used for controlling the opening and closing of the corresponding first electromagnetic valve 7 or the corresponding second electromagnetic valve 8, so as to control the heat exchange, liquid inlet and liquid outlet of one server 1.

[0095] The total controller 10 in FIG. 1 is a general term of the first controller and the second controller.

[0096] Alternatively, the immersion liquid cooling system can further include a filtering device, a water inlet end of the filtering device being connected with a liquid outlet end of the heat exchange device 2, and a water outlet end of the filtering device being connected with a liquid inlet end of the first water distribution device 3, the filtering device being provided with a filter screen for filtering and removing impurities of the cooling liquid and a PH probe for detecting the PH value of the cooling liquid.

[0097] In actual use, the filtering device can filter the cooling liquid flowing therethrough and monitor the PH value of the cooling liquid in real time, so that the cooling liquid with impurities can be prevented from entering the server 1, and the PH value of the cooling liquid needs to be within a preset range to meet the requirements, when the PH value of the cooling liquid is not within the preset range, the PH probe can send relevant information to the total controller 10, so as to obtain the relevant information of the PH value of the cooling liquid in time, and make timely adjustment when the PH value does not meet the requirements.

[0098] On the other hand, the PH probe can also be arranged in the server 1, and details are not described herein.

[0099] The immersion liquid cooling system provided by the present disclosure can deploy single-phase immersion by using a rack, improve heat exchange efficiency, easily break through the heat dissipation bottleneck of high-power high-heat-density chips, high-density servers and high-power-density cabinets, and meet the heat dissipation demand. The liquid cooling is fully covered, and the temperature uniformity is good; tool-free maintenance can be realized during disassembly and assembly of the sealed cabinet, and when the servers are massively deployed, manpower and time can be effectively saved.

[0100] It should also be noted that, in the specification, relational terms such as first and second, and the like can be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0101] List of reference signs: 1 - server; 11 - cabinet shell; 111 - cabinet body; 1111 - electromagnet; 1112 - mounting hole; 1113 - sealing ring; 112 - upper cover; 1121 - magnetic attraction piece; 113 - liquid inlet hole; 114 - liquid outlet hole; 115 - liquid adding and discharging port; 116 - exhaust valve; 12 - current control circuit; 121 - resistor; 122 - control switch; 2 - heat exchange device; 3 - first water distribution device; 4 - second water distribution device; 5 - liquid supplement tank; 51 - suction pump; 6 - third water distribution device; 7 - first electromagnetic valve; 8 - second electromagnetic valve; 9 - backup power supply; 10 - general controller; 101 - control button.

Claims

1. A server, characterized by The machine case shell (11) is configured to hold cooling liquid, and comprises a case body (111) and an upper cover (112) coupled to the case body (111); One of the end face of the case body (111) facing the upper cover (112) and the end face of the upper cover (112) facing the case body (111) is provided with an electromagnet (1111), and the other is provided with a magnetic attraction element for cooperating with the electromagnet (1111); so that the case body (111) and the upper cover (112) are sealingly coupled by magnetic attraction.

2. The server of claim 1, wherein, The electromagnet (1111) comprises a core and a spiral coil wound around the outer periphery of the core; The end face of the machine case shell (11) facing the upper cover (112) is provided with a plurality of mounting holes (1112) for mounting the electromagnet (1111), and the electromagnet (1111) is vertically inserted into the mounting hole (1112).

3. The server of claim 2, wherein, The side wall of the mounting hole (1112) is provided with a through hole for the wire of the spiral coil to pass out; the wires at both ends of the same spiral coil pass out of the same through hole.

4. The server of claim 2, wherein, The depth of the mounting hole (1112) is greater than the height of the electromagnet (1111), and the magnetic attraction element is arranged on the end face of the upper cover (112) facing the case body (111), when the electromagnet (1111) is attracted to the magnetic attraction element, the magnetic attraction element is at least partially accommodated in the mounting hole (1112).

5. The server of claim 1, wherein, It also includes a current control circuit (12) and a first controller, the electromagnet (1111) is connected to the current control circuit (12), the current control circuit (12) comprises at least two parallel connected regulating branches, the regulating branch comprises a control switch (122) and a plurality of resistors (121) connected in series, the first controller is configured to control the opening / closing of the control switch (122), to control the number of resistors (121) connected in parallel with the electromagnet (1111), thereby adjusting the current flowing through the electromagnet (1111).

6. The server of claim 5, wherein, The machine case shell (11) is provided with a first pressure detection element for detecting the pressure of the cooling liquid, and the first pressure detection element transmits the value of the detected pressure to the first controller, and the first controller adjusts the current flowing through the electromagnet (1111) according to the value of the pressure and the number of electromagnets (1111).

7. The server of claim 5, wherein, The current control circuit (12) is provided with an indicating lamp in series with the electromagnet (1111), when the electromagnet (1111) is in the energized state, the corresponding indicating lamp of the electromagnet (1111) is on, and the indicating lamp is arranged one by one with the electromagnet (1111).

8. The server of claim 1, wherein, The machine case shell (11) is provided with a liquid level sensor for detecting the liquid level of the cooling liquid in the machine case shell (11), and when the value of the liquid level detected by the liquid level sensor is lower than the preset minimum liquid level, an indication is given to supplement the cooling liquid; when the liquid level information detected by the liquid level sensor is higher than the preset maximum liquid level, an indication is given to stop supplementing the cooling liquid.

9. The server of claim 2, wherein, The first sealing groove and the sealing ring (1113) installed in the first sealing groove are arranged in the position of the end face of the box body (111) towards the upper cover (112) and close to the inner side face of the box body (111). The mounting hole (1112) is arranged in the position of the end face of the box body (111) towards the upper cover (112) and close to the outer side wall of the box body (111).

10. The server of claim 9, wherein, The mounting holes (1112) are uniformly distributed along the circumferential direction of the end face of the box body (111) towards the upper cover (112).

11. An immersion liquid cooling system characterized by, The server (1) comprises a heat exchange device (2), a first water distribution device (3), a second water distribution device (4), and a plurality of servers (1) according to any one of claims 1-10. The machine case shell (11) of the server (1) is provided with an inlet hole (113) and an outlet hole (114), the first water distribution device (3) is connected to the inlet hole (113) and the low-temperature cooling liquid outlet of the heat exchange device (2); the second water distribution device (4) is connected to the outlet hole (114) and the high-temperature cooling liquid inlet of the heat exchange device (2).

12. The immersion liquid cooling system of claim 11, wherein, The filter device is further provided with a filter screen and a PH probe.

13. The immersion liquid cooling system of claim 11, wherein, The server (1) further comprises a liquid supplement tank (5), a third water distribution device (6), and a suction pump (51) arranged in the liquid supplement tank (5), wherein the machine case shell (11) of the server (1) is provided with a liquid adding and discharging port (115), one end of the third water distribution device (6) is connected to the liquid supplement tank (5), and the other end is connected to the liquid adding and discharging port (115). The suction pump (51) is configured to pump the cooling liquid in the machine case shell (11) out to the liquid supplement tank (5) through the liquid adding and discharging port (115), and pump the cooling liquid in the liquid supplement tank (5) into the machine case shell (11) through the third water distribution device (6).

14. The immersion liquid cooling system of claim 13, wherein, The first electromagnetic valve (7) is arranged at the connection between the first water distribution device (3) and the inlet hole (113); The second electromagnetic valve (8) is arranged at the connection between the third water distribution device (6) and the liquid adding and discharging port (115); The third electromagnetic valve is arranged at the connection between the second water distribution device (4) and the outlet hole (114).

15. The immersion liquid cooling system of claim 14, wherein, The server (1) further comprises a backup power supply (9) electrically connected to the electromagnet (1111), the first electromagnetic valve (7), the second electromagnetic valve (8), the heat exchange device (2), the first water distribution device (3), the second water distribution device (4), the third water distribution device (6), and the suction pump (51).

16. The immersion liquid cooling system of claim 15, wherein, The server (1) further comprises a power failure detection member and a second controller, the power failure detection member is used to detect whether the main power supply in the server (1) is powered off, when the power failure detection member detects that the main power supply is powered off, the power failure information is sent to the second controller, and the second controller controls the backup power supply (9) to supply power.

17. The immersion liquid cooling system of claim 14, wherein, The server (1) further comprises a control button (101) electrically connected to the first electromagnetic valve (7) and the second electromagnetic valve (8), and the control button (101) is used to control the first electromagnetic valve (7) and the second electromagnetic valve (8) to be closed.

18. The immersion liquid cooling system of claim 14, wherein, The server (1) further comprises a plurality of control buttons, and the control buttons are used to control the opening and closing of the corresponding first electromagnetic valve (7) or the corresponding second electromagnetic valve (8).

19. The immersion liquid cooling system of claim 13, wherein, The server (1) further comprises a liquid level sensor arranged in the cabinet shell (11), the liquid level sensor is used to detect the liquid level of the cooling liquid in the cabinet shell (11), when the value of the liquid level detected by the liquid level sensor is lower than the lowest liquid level preset value, the suction pump (51) is controlled to supplement the cooling liquid into the cabinet shell (11); when the liquid level information detected by the liquid level sensor is higher than the highest liquid level preset value, the suction pump (51) is controlled to stop supplementing the cooling liquid into the cabinet shell (11).

20. The immersion liquid cooling system of claim 13, wherein, The cabinet shell (11) is provided with an exhaust valve (116), when the suction pump (51) pumps out the cooling liquid from the cabinet shell (11) or pumps the cooling liquid into the cabinet shell (11), the exhaust valve (116) is configured to balance the air pressure in the cabinet shell (11).

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