A server and immersion liquid cooling system

Abstract

The present invention discloses a server and an immersion liquid cooling system, and relates to the technical field of server heat dissipation. The server includes a chassis shell, in which coolant is contained, and the chassis shell includes a chassis body and an upper cover buckled on the chassis body; one of the end surface of the chassis body facing the upper cover and the end surface of the upper cover facing the chassis body is provided with an electromagnet, and the other is provided with a magnetic suction piece for being attracted to the electromagnet; so that the chassis body and the upper cover are sealed and attracted by magnetic attraction. The server in the present invention realizes the sealing of the chassis body and the upper cover through the electromagnet, avoids the operation of repeatedly screwing the screws, simplifies the operation process, can effectively shorten the time to achieve sealing and unsealing, can meet the sealing requirements of the immersion liquid cooling system, and the sealing process is simple to operate.

Description

Technical Field

[0001] The present invention relates to the technical field of server heat dissipation, and in particular to a server. In addition, the present invention also relates to an immersion liquid cooling system including the server. Background Art

[0002] Immersion liquid cooling technology revolutionizes the way data centers cool through precisely designed and rigorously implemented engineering techniques. When electronic equipment is completely immersed in a specially designed liquid with good insulation and efficient heat transfer properties, the heat generated by the equipment is directly transferred to the coolant, which circulates the coolant to carry the heat away.

[0003] Conventional immersion liquid cooling immerses the server in a liquid cooling tank, resulting in waste of coolant and low space utilization. At the same time, when a single server node needs maintenance, the traditional liquid cooling tank needs to be opened repeatedly, causing volatilization and waste of coolant.

[0004] For the rack-type deployment structure of the immersion liquid cooling system, each server chassis is immersed separately. Generally, the chassis will be filled with coolant. At the same time, in order to realize the heat exchange cycle of the liquid, the coolant may have a certain pressure, so the chassis also needs to have a certain pressure bearing capacity, which requires a high sealing of the chassis. The existing related technologies all make the chassis into a mechanical sealing structure, by fixing a rubber sealing ring on the base of the chassis, and fastening the cover to the base by locking screws on the outside to achieve sealing. This sealing method usually requires dozens of screws to be fixed along the edge of the chassis. For larger server chassis, it may even require nearly a hundred screws. Each screw needs to be manually tightened or removed. When a large number of servers are deployed in a data center, the labor cost is high.

[0005] In summary, how to provide a server that can meet the sealing requirements of the immersion liquid cooling system and has a simple sealing process operation is a technical problem that needs to be urgently solved by technical personnel in this field. Summary of the invention

[0006] The object of the present invention is to provide a server, which realizes the sealing of a box body and an upper cover by means of an electromagnet, can meet the sealing requirements of an immersion liquid cooling system and the sealing process is simple to operate.

[0007] In addition, the present invention also provides an immersion liquid cooling system including the above server.

[0008] In order to solve the above technical problems, the present invention provides a server, comprising a chassis shell, the chassis shell is used to hold a cooling liquid, the chassis shell comprises a chassis body and an upper cover buckled on the chassis body;

[0009] One of the end surface of the box body facing the upper cover and the end surface of the upper cover facing the box body is provided with an electromagnet, and the other is provided with a magnetic attraction member for engaging with the electromagnet, so that the box body and the upper cover are sealed and attracted by magnetic attraction.

[0010] On the one hand, the electromagnet includes an iron core and a spiral coil wound around the outer circumference of the iron core;

[0011] The end surface of the chassis shell facing the upper cover is provided with a plurality of mounting holes for mounting the electromagnets, and the electromagnets are vertically inserted into the mounting holes;

[0012] The side wall of the mounting hole is provided with a through hole for passing the electric wires of the spiral coil; the electric wires at both ends of the same spiral coil pass through the same through hole.

[0013] On the other hand, the depth of the mounting hole is greater than the height of the electromagnet, the magnetic attraction component is provided in the end surface of the upper cover facing the box body, and when the electromagnet is attracted to the magnetic attraction component, the magnetic attraction component is at least partially located in the mounting hole.

[0014] On the other hand, it also includes a current control circuit and a first controller, the electromagnet is connected to the current control circuit, the current control circuit includes at least two regulating branches connected in parallel, the regulating branch includes a resistor connected in series and a control switch, and the opening and closing of the control switch is controlled by the first controller to control the number of parallel resistors connected to the electromagnet, thereby adjusting the current flowing through the electromagnet.

[0015] On the other hand, a first pressure detection component for detecting pressure information of the coolant is provided in the chassis shell. The first pressure detection component transmits the detected pressure information to the first controller. The first controller adjusts the current flowing through the electromagnet according to the pressure information and the number of the electromagnets.

[0016] On the other hand, the current control circuit is provided with an indicator light connected in series with the electromagnet. When the electromagnet is in a power-on state, the indicator light corresponding to the electromagnet lights up. The indicator light is provided in a one-to-one correspondence with the electromagnet.

[0017] On the other hand, a liquid level sensor is arranged inside the chassis shell, and the liquid level sensor is used to detect the liquid level of the coolant in the chassis shell. When the liquid level information detected by the liquid level sensor is lower than the minimum liquid level preset value, the chassis shell is controlled to be replenished with coolant; when the liquid level information detected by the liquid level sensor is higher than the maximum liquid level preset value, the chassis shell is stopped from being replenished with coolant.

[0018] On the other hand, a first sealing groove and a sealing ring installed in the first sealing groove are provided at a position close to the inner side surface of the box body and the end surface of the box body facing the upper cover;

[0019] The mounting holes are arranged at positions of the outer side wall of the box body and the end surface of the box body facing the upper cover, and the mounting holes are evenly distributed along the circumference of the end surface of the box body facing the upper cover.

[0020] An immersion liquid cooling system comprises a heat exchange device, a first water distribution device, a second water distribution device and a plurality of servers as described above; a chassis shell of the server is provided with a liquid inlet and a liquid outlet, the first water distribution device is connected to the liquid inlet and the low-temperature cold liquid outlet of the heat exchange device; the second water distribution device is connected to the liquid outlet and the high-temperature cold liquid inlet of the heat exchange device.

[0021] On the one hand, it also includes a filtering device, the water inlet end of the filtering device is connected to the heat exchange device, the water outlet end of the filtering device is connected to the first water distribution device, and the filtering device is provided with a filter net for filtering and removing impurities from the coolant and a PH probe for detecting the PH value of the coolant.

[0022] On the other hand, it also includes a liquid replenishing tank, a third water distribution device and a suction pump arranged in the liquid replenishing tank, the chassis shell of the server is provided with a liquid adding and draining port, one end of the third water distribution device is connected to the liquid replenishing tank, and the other end is connected to the liquid adding and draining port;

[0023] When the suction pump is in a water absorbing state, the coolant in the chassis shell can flow out from the liquid filling and draining port to the liquid replenishing tank; when the suction pump is in a water pumping state, the coolant in the liquid replenishing tank can be replenished into the chassis shell through the third water distribution device.

[0024] On the other hand, a first solenoid valve is provided at the connection between the first water distribution device and the liquid inlet; a second solenoid valve is provided at the connection between the third water distribution device and the liquid adding and discharging port; and a third solenoid valve is provided at the connection between the second water distribution device and the liquid outlet.

[0025] On the other hand, it also includes a backup power supply, which is electrically connected to the electromagnet on the chassis shell, the first solenoid valve, the second solenoid valve, the heat exchange device, the first water distribution device, the second water distribution device, the third water distribution device, and the suction pump.

[0026] On the other hand, it also includes a power-off detection component and a second controller. The power-off detection component is used to detect whether the main power supply in the server is powered off. When the power-off detection component 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.

[0027] On the other hand, it also includes a control button, the control button is electrically connected to the first solenoid valve and the second solenoid valve, and the control button is used to control the first solenoid valve and the second solenoid valve to close with one button;

[0028] Or, it further includes a control button, the number of which is multiple, and the control button is used to control the opening and closing of the corresponding first solenoid valve or the corresponding second solenoid valve.

[0029] It can be seen from the above technical solution that in the actual use of the server provided by the present invention, first, coolant needs to be added into the chassis shell, and the electromagnet and the magnetic attraction piece need to be installed into the chassis shell. Then, the upper cover is buckled to a suitable position so that the electromagnet corresponds to the magnetic attraction piece at the corresponding position; the electromagnet is controlled to be energized to generate magnetic attraction force, and the electromagnet attracts the magnetic attraction piece, so that the upper cover and the box body are sealed and attracted.

[0030] The beneficial effect of the present invention is that, in the process of sealing the chassis shell of the server, compared with the operation process of screwing multiple screws in the prior art, the present invention realizes the sealing of the box body and the upper cover through electromagnets, avoiding the operation of repeatedly screwing the screws, simplifying the operation process, and realizing tool-free sealing installation or tool-free unsealing; it can effectively shorten the time for sealing and unsealing, meet the sealing requirements of the immersion liquid cooling system, and the sealing process is simple to operate. In addition, in the sealing process of the server provided by the present invention, the magnetic attraction between the box body and the upper cover can be adjusted by adjusting the number of electromagnets installed or the size of the current flowing through the electromagnets, thereby adjusting the sealing pressure, and the adjustment process is convenient.

[0031] In addition, the present invention also provides an immersion liquid cooling system including the above server. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0033] Figure 1 A schematic diagram of the structure of a server provided in an embodiment of the present invention;

[0034] Figure 2A schematic diagram of the structure of a current control circuit provided by an embodiment of the present invention;

[0035] Figure 3 A schematic diagram of the structure of an electromagnet provided in an embodiment of the present invention;

[0036] Figure 4 A schematic diagram of magnetic field lines of an electromagnet provided in an embodiment of the present invention;

[0037] Figure 5 A schematic structural diagram of an immersion liquid cooling system provided in an embodiment of the present invention.

[0038] 1- Server;

[0039] 11-chassis shell, 111-chassis body, 1111-electromagnet, 1112-mounting hole, 1113-sealing ring, 112-upper cover, 1121-magnetic part, 113-liquid inlet hole, 114-liquid outlet hole, 115-liquid filling and discharging port, 116-exhaust valve;

[0040] 12-current control circuit, 121-resistance, 122-control switch;

[0041] 2-Heat exchange device;

[0042] 3- The first water distribution device;

[0043] 4- the second water distribution device;

[0044] 5- Fluid replenishment tank;

[0045] 51- Suction pump;

[0046] 6- The third water distribution device;

[0047] 7- first solenoid valve;

[0048] 8- second solenoid valve;

[0049] 9- Backup power supply;

[0050] 10- General controller;

[0051] 101-Control buttons. DETAILED DESCRIPTION

[0052] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0053] The core of the present invention is to provide a server, which realizes the sealing of the box body and the upper cover by means of an electromagnet, can meet the sealing requirements of the immersion liquid cooling system and the sealing process is simple to operate.

[0054] Another core of the present invention is to provide an immersion liquid cooling system including the above-mentioned server.

[0055] This specific embodiment discloses a server 1, which includes a chassis shell 11, which is used to hold cooling liquid. The chassis shell 11 includes a chassis body 111 and an upper cover 112 buckled on the chassis body 111; one of the end surface of the chassis body 111 facing the upper cover 112 and the end surface of the upper cover 112 facing the chassis body 111 is provided with an electromagnet 1111, and the other is provided with a magnetic attraction member for attracting the electromagnet 1111; so that the chassis body 111 and the upper cover 112 are sealed and attracted by magnetic attraction.

[0056] It should be noted that the chassis shell 11 of the server 1 in this specific embodiment is applied to the field of immersion liquid cooling technology. In actual use, the rack-type deployment can perform maintenance on a single server 1 separately, further saving the amount of cooling liquid.

[0057] It should be noted that the upper cover 112 in this specific embodiment is buckled relative to the box body 111 and can be opened. During actual use, the sealing connection between the upper cover 112 and the box body 111 can be achieved simply through the magnetic attraction of the electromagnet 1111 and the magnetic attraction part, or other structures can be provided at the same time to provide pre-tightening force. Specifically, it can be a snap-on structure, etc., which is determined according to actual conditions and will not be elaborated here.

[0058] During the actual use of the server 1 provided in this specific embodiment, first, coolant needs to be added into the chassis housing 11, and the electromagnet 1111 and the magnetic attraction piece are installed in the chassis housing 11. Then, the upper cover 112 is buckled to a suitable position, so that the electromagnet 1111 corresponds to the magnetic attraction piece at the corresponding position; the electromagnet 1111 is energized to generate magnetic attraction force, and the electromagnet 1111 attracts the magnetic attraction piece, so that the upper cover 112 and the box body 111 are sealed and attracted.

[0059] The beneficial effect of this specific embodiment is that, in the process of sealing the chassis shell 11 of the server 1, compared with the operation process of screwing multiple screws in the prior art, the present invention realizes the sealing of the box body 111 and the upper cover 112 through the electromagnet 1111, avoiding the operation of repeatedly screwing the screws, simplifying the operation process, and effectively shortening the time for sealing and unsealing, which can meet the sealing requirements of the immersion liquid cooling system and the sealing process is simple to operate. In addition, in the process of sealing the server 1 provided by the present invention, the magnetic attraction between the box body 111 and the upper cover 112 can be adjusted by adjusting the number of electromagnets 1111 installed or the size of the current flowing through the electromagnet 1111, thereby adjusting the sealing pressure, and the adjustment process is convenient.

[0060] On the basis of the above embodiment, the electromagnet 1111 can include an iron core and a spiral coil wound around the outer circumference of the iron core; a plurality of mounting holes for mounting the electromagnet 1111 are provided on the end surface of the chassis shell 11 facing the upper cover 112; the electromagnet 1111 is vertically inserted into the mounting hole 1112; the side wall of the mounting hole 1112 is provided with a through hole for the electric wire of the spiral coil to pass through; the electric wires at both ends of the same spiral coil pass through the same through hole.

[0061] like Figure 1 As shown, the end surface of the chassis housing 11 facing the upper cover 112 is evenly provided with a plurality of mounting holes 1112, and the electromagnet 1111 is placed in the mounting hole 1112. In order to facilitate the wires of the electromagnet 1111 to pass through, it can be as shown in FIG. Figure 3 As shown, one end of the wire is bent so that both ends of the wire pass through the same through hole, which can effectively reduce the number of through holes and facilitate the connection of the wires of the electromagnet 1111. At the same time, since the through holes need to be sealed, the sealing workload can be reduced after the number of through holes is reduced, further saving costs.

[0062] On the other hand, the electromagnet 1111 in this specific embodiment includes an iron core and a spiral coil wound around the outer periphery of the iron core. Figure 4 As shown, after this type of electromagnet 1111 is placed in the mounting hole 1112, the magnetic field generated by the electromagnet 1111 will mostly be concentrated inside the coil and will not extend into the chassis shell 11, nor will it cause electromagnetic interference with the internal components of the chassis shell 11, affecting the normal operation of other components, especially the mechanical hard disk; in addition, the magnetic field generated by this coil is similar to the magnetic field of a bar magnet, and can accurately contact the magnetic part 1121 above the chassis shell 11, and has a higher magnetic force.

[0063] It should be noted that in this specific embodiment, the electromagnet 1111 and the magnetic member 1121 on the upper cover 112 can be arranged in a one-to-one correspondence, and the magnetic seal between the upper cover 112 and the box body 111 is achieved by the attraction of the electromagnet and the magnetic member 1121. Among them, the magnetic member 1121 in the upper cover 112 can be made of ferromagnetic materials and magnets, and the ferromagnetic materials include iron, cobalt, nickel and alloys containing these elements; the magnet can be made of neodymium iron boron materials, etc.; 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 box body 111 where the electromagnet 1111 is placed. Therefore, when designing the depth of the mounting hole 1112, after placing the electromagnet 1111, it is necessary to leave space for the thickness of the magnetic material of the upper cover 112, so that the upper cover 112 and the box body 111 are completely fitted.

[0064] Specifically, the depth of the mounting hole 1112 can be made greater than the height of the electromagnet 1111 , and a magnetic attraction component is provided in the end surface of the upper cover 112 facing the box body 111 , and when the electromagnet 1111 is attracted to the magnetic attraction component, the magnetic attraction component is at least partially located in the mounting hole 1112 .

[0065] In addition, the magnetic attraction component can also be set as an integrated structure, or multiple electromagnets 1111 can correspond to the same magnetic attraction component. The specific details are determined according to actual conditions and will not be elaborated here.

[0066] like Figure 3 As shown, when the two ends of the line segment of the electromagnet 1111 are gathered together, they are led out from the side wall of the chassis shell 11. There will be multiple coils on the wall of the chassis shell 11. The following wiring method can be considered: 10 coils can be grouped together, and the positive poles and negative poles can be connected in parallel to form 1 positive pole and 1 negative pole connector, which are inserted into the connector. Design a power adapter board, take power from the server 1, insert the connector into the power adapter board, and complete the power supply of the coil. Of course, there can be other connection methods that meet the requirements, which are determined according to the actual situation and will not be elaborated here.

[0067] Based on the above embodiment, the server 1 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 includes at least two regulating branches connected in parallel. The regulating branch includes a resistor 121 connected in series and a control switch 122. The first controller controls the opening and closing of the control switch 122 to control the number of parallel resistors 121 connected to the electromagnet 1111, thereby adjusting the current flowing through the electromagnet 1111.

[0068] like Figure 2As shown, the current control circuit 12 where the electromagnet 1111 is located includes three regulating branches connected in parallel, each regulating branch includes a resistor 121 and a control switch 122 connected in series. The first controller controls the opening and closing of the control switch 122 to adjust the number of resistors 121 connected in the regulating branch, thereby adjusting the resistors 121 in the current control circuit 12, and then adjusting 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, thereby changing the magnetic attraction generated by the electromagnet 1111.

[0069] In actual use, according to different actual conditions, the current of the coil can be adjusted by adjusting the number of resistors 121 connected to the current control circuit 12, thereby adjusting the magnetic attraction of the electromagnet 1111.

[0070] It should be noted that the control switch 122 in this specific embodiment can be set to a Mouse tube (Metal-Oxide-Semiconductor Field-Effect Transistor), which controls the current through the field effect and has the characteristics of high input impedance, low noise, and fast switching.

[0071] The first controller can be set as an MCU (Microcontroller Unit) on the power control board. Due to the arrangement of the pressure sensor, the fluid pressure in the chassis can be fed back to the MCU chip in real time. The MCU chip controls the opening and closing of the control switch 122 according to the fluid pressure in the chassis, thereby controlling the magnetic attraction of the electromagnet 1111.

[0072] In a specific embodiment, a first pressure detection component for detecting pressure information of the coolant may be provided in the chassis shell 11 . The first pressure detection component 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 .

[0073] During actual use, according to the different pressures of the coolant in the chassis shell 11, it is necessary to adjust the pressure between the upper cover 112 and the chassis body 111. When the pressure of the coolant in the chassis shell 11 increases, it is necessary to increase the pressure between the upper cover 112 and the chassis body 111 to meet the sealing requirements. When the pressure of the coolant in the chassis shell 11 decreases, the pressure between the upper cover 112 and the chassis body 111 can be appropriately reduced to save power consumption.

[0074] Specifically, the pressure between the upper cover 112 and the box body 111 needs to be calculated based on the magnetic attraction between the electromagnet 1111 and the magnetic part 1121. The magnetic attraction between the electromagnet 1111 and the magnetic part 1121 is positively correlated with the magnetic field strength of the electromagnet 1111. The calculation formula of the magnetic field strength is: H = N × I / Le, where: H is the magnetic field strength, in A / m; N is the number of turns of the excitation coil; I is the excitation current, in A; Le is the effective magnetic path length of the test sample, in m. Therefore, under the premise that the number of coil turns is determined, the magnetic force can be achieved by dynamically adjusting the current. Then adjust the sealing pressure between the upper cover 112 and the box body 111.

[0075] In the actual control process, it is necessary to establish a corresponding relationship between the current of the coil of the electromagnet 1111 and the pressure information detected by the first pressure detection element. Specifically, it can be obtained through multiple tests or strict calculations, and the corresponding relationship between the current of the coil of the electromagnet 1111 and the pressure information detected by the first pressure detection element is pre-stored in the first controller. In the actual use process, the specific adjustment steps are as follows:

[0076] The first step is to control the first pressure detection component to obtain the pressure information of the coolant and transmit the pressure information to the first controller;

[0077] The second step is to obtain a preset current according to the pressure information and the pre-stored correspondence between the current of the coil of the electromagnet 1111 and the pressure information detected by the first pressure detection element;

[0078] The third step is to determine whether the preset current is consistent with the current current of the coil of the current electromagnet 1111. If so, maintain the current current. If not, adjust the number of resistors 121 connected to the current control circuit 12 until the preset current is consistent with the current current of the coil of the current electromagnet 1111.

[0079] 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 elaborated here.

[0080] In this specific embodiment, the current in the electromagnet 1111 is controlled by the pressure information detected by the first pressure detection component, 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 component, thereby avoiding the situation where 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.

[0081] On the basis of the above embodiment, an indicator light connected in series with the electromagnet 1111 can be provided in the current control circuit 12. When the electromagnet 1111 is in the power-on state, the indicator light corresponding to the electromagnet 1111 lights up. The indicator light and the electromagnet 1111 are provided in a one-to-one correspondence.

[0082] Specifically, an indicator light may be disposed on the outside of the box body 111 to facilitate observation of the on and off status of the electromagnet 1111 .

[0083] In actual use, some electromagnets 1111 may be powered off individually. In order to obtain the information of the powered-off electromagnet 1111 in time, an indicator light connected in series with the electromagnet 1111 may be provided in the current control circuit 12 to judge whether the electromagnet 1111 is powered off by turning on or off the indicator light.

[0084] On the other hand, a pressure sensor may be provided at the position where the electromagnet 1111 is adsorbed to the corresponding magnetic attraction member, and the attraction pressure detected by the pressure sensor may be used to determine whether the corresponding electromagnet 1111 is powered off, depending on the actual situation.

[0085] In this specific embodiment, an indicator light is provided to promptly indicate the power failure of the electromagnet 1111, so that the operator can promptly obtain the power failure information of the electromagnet 1111 and promptly adjust the current of the remaining electromagnets 1111 to meet the overall sealing requirements.

[0086] Based on the above embodiment, a second pressure detection component can be set on 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. The second pressure detection component is used to detect the pressure information between the box body 111 and the upper cover 112.

[0087] The second pressure detection component in this specific embodiment can directly obtain the pressure information between the upper cover 112 and the box shell. According to the pressure information obtained by the second pressure detection component and the pressure information obtained by the first pressure detection component, the pressure between the upper cover 112 and the box body 111 and the pressure of the coolant in the chassis shell 11 can be directly obtained.

[0088] In actual use, it is necessary to establish a 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. Specifically, it can be obtained through multiple tests or strict calculations, 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:

[0089] The first step is to control the first pressure detection component to obtain first pressure information of the coolant and transmit the first pressure information to the first controller; control the second pressure detection component to obtain second pressure information of the coolant and transmit the second pressure information to the first controller;

[0090] In the second step, it is determined whether the first pressure information corresponds to the second pressure information based on 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 component. If so, 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.

[0091] In this specific embodiment, the second pressure sensor can intuitively detect the pressure between the upper cover 112 and the box body 111. In actual use, the error caused by other factors in predicting the pressure between the upper cover 112 and the box body 111 by only adjusting the current of the electromagnet 1111 can be avoided, and the corresponding accuracy of the coolant pressure and the sealing pressure between the upper cover 112 and the box body 111 can be effectively improved.

[0092] On the basis of the above embodiment, a liquid level sensor can be arranged in the chassis shell 11, and the liquid level sensor is used to detect the liquid level of the coolant in the chassis shell 11. When the liquid level information detected by the liquid level sensor is lower than the minimum liquid level preset value, the chassis shell 11 is controlled to be replenished with coolant; when the liquid level information detected by the liquid level sensor is higher than the maximum liquid level preset value, the chassis shell 11 is stopped from being replenished with coolant.

[0093] Specifically, a first liquid level sensor may be provided at the lowest liquid level in the chassis housing 11, and a second liquid level sensor may be provided at the highest liquid level in the chassis housing 11. Of course, the liquid level sensor may also be provided in other ways, which are determined according to actual conditions and will not be described in detail here.

[0094] On the basis of the above embodiment, a first sealing groove and a sealing ring 1113 installed in the first sealing groove are provided at a position close to the inner side surface of the box body 111 at the end surface of the box body 111 facing the upper cover 112; a mounting hole 1112 is provided at a position close to the outer wall of the box body 111 at the end surface of the box body 111 facing the upper cover 112, and the mounting holes 1112 are evenly distributed along the circumference of the end surface of the box body 111 facing the upper cover 112.

[0095] In actual use, the mounting hole 1112 is arranged close to the outer side of the box body 111 to facilitate the outlet of the electromagnet 1111, and the sealing ring 1113 is arranged close to the inner side of the box body 111 to improve the sealing effect.

[0096] In addition to the above-mentioned server 1, the present invention 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 described in any of the above items; the chassis shell 11 of the server 1 is provided with a liquid inlet hole 113 and a liquid outlet hole 114, the first water distribution device 3 is connected to the liquid inlet hole 113 and the low-temperature cold liquid outlet of the heat exchange device 2; the second water distribution device 4 is connected to the liquid outlet hole 114 and the high-temperature cold liquid inlet of the heat exchange device 2.

[0097] During actual use, the coolant in the chassis shell 11 enters the second water distribution device 4 through the liquid outlet 114, and enters the heat exchange device 2 from the other end of the second water distribution device 4, releases heat in the heat exchange device 2, and the coolant with reduced temperature enters the chassis shell 11 through the first water distribution device 3 and the liquid inlet 113, and the cycle is repeated in this way to cool the coolant in the chassis shell 11.

[0098] The chassis housing 11 of the server 1 is provided with an exhaust valve 116 , and during the process of liquid intake and discharge, exhaust or air intake can be performed through the exhaust valve 116 .

[0099] A first solenoid valve 7 is provided at the connection between the first water distribution device 3 and the liquid inlet hole 113, and a third solenoid valve is provided at the connection between the second water distribution device 4 and the liquid outlet hole 114. In actual use, the replacement of the coolant in the chassis shell 11 can be controlled by controlling the opening and closing of the first solenoid valve 7 and the third solenoid valve.

[0100] Specifically, a coolant replacement time interval can be set, and the coolant in the chassis shell 11 can be heat exchanged at every preset time interval. The coolant in the chassis shell 11 can also be heat exchanged in real time. The specific time interval is determined according to actual conditions and will not be elaborated here.

[0101] On the basis of the above embodiment, the immersion liquid cooling system may further include a liquid replenishing tank 5, a third water distribution device 6 and a suction pump 51 disposed in the liquid replenishing tank 5, the chassis housing 11 of the server 1 is provided with a liquid adding and draining port 115, one end of the third water distribution device 6 is connected to the liquid replenishing tank 5, and the other end is connected to the liquid adding and draining port 115; when the suction pump 51 is in a water absorbing state, the coolant in the chassis housing 11 may flow out from the liquid adding and draining port 115 to the liquid replenishing tank 5; when the suction pump 51 is in a water pumping state, the coolant in the liquid replenishing tank 5 may be supplemented into the chassis housing 11 through the third water distribution device 6. A second solenoid valve 8 is provided at the connection between the third water distribution device 6 and the liquid adding and draining port 115.

[0102] In actual use, by controlling the suction state of the suction pump 51 , it is possible to replenish the chassis shell 11 with liquid or to extract the coolant in the chassis shell 11 .

[0103] like Figure 5 As shown, the immersion liquid cooling system also includes a backup power supply 9, which is electrically connected to the electromagnet 1111 on the chassis shell 11, the first solenoid valve 7, the second solenoid 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, the suction pump 51 and other electrical equipment.

[0104] When a power outage occurs, the chassis shell 11 will lose its sealing effect. In this case, since a backup power supply 9 has been arranged in the cabinet, as shown in Figure 1, the backup power supply 9 will also power the server 1, the automatic liquid inlet and outlet controller, the heat exchange device 2 and other systems. At this time, the main controller 10 can first cut off the connecting pipeline of the heat exchange device 2, and then start the automatic liquid inlet and outlet system to discharge the liquid inside the server 1 into the liquid replenishing tank 5. After the coolant in the server 1 is drained, the power can be cut off to prevent sudden power outages in the data center and liquid overflow.

[0105] In order to obtain the power outage situation in time, a power outage detection component and a second controller can also be set up. The power outage detection component is used to detect whether the main power supply in the server 1 is powered off. When the power outage detection component detects that the main power supply is in a power-off state, the power outage information is sent to the second controller, and the second controller controls the backup power supply 9 to supply power.

[0106] In a specific embodiment, the immersion liquid cooling system may also be provided with a control button 101, which is electrically connected to the first solenoid valve 7 and the second solenoid valve 8, and is used to control the first solenoid valve 7 and the second solenoid valve 8 to be closed with one button; or, the immersion liquid cooling system also includes a control button, and the number of the control buttons is multiple, and the control button is used to control the opening and closing of the corresponding first solenoid valve 7 or the corresponding second solenoid valve 8, so as to control the heat exchange and liquid inlet and outlet of a server 1 individually.

[0107] Figure 1 The master controller 10 is a general term for the first controller and the second controller.

[0108] In a specific embodiment, the immersion liquid cooling system also includes a filtering device, the water inlet end of the filtering device is connected to the liquid outlet end of the heat exchange device 2, the water outlet end of the filtering device is connected to the liquid inlet end of the first water distribution device 3, and the filtering device is provided with a filter screen for filtering and removing impurities from the coolant and a pH probe for detecting the pH value of the coolant.

[0109] During actual use, the filtering device can filter the coolant flowing through and monitor the pH value of the coolant in real time, so as to prevent the coolant with impurities from entering the server 1. The pH value of the coolant must be within a preset range to meet the requirements. When the pH value of the coolant is not within the preset range, the pH probe can send relevant information to the main controller 10 so as to obtain relevant information about the pH value of the coolant in a timely manner and make timely adjustments when the pH value does not meet the requirements.

[0110] On the other hand, a PH probe may also be arranged in the chassis housing 11 of the server 1 , which is determined according to actual conditions and will not be elaborated herein.

[0111] The immersion liquid cooling system provided by the present invention utilizes single-phase immersion in rack deployment to improve heat exchange efficiency, and can easily break through the heat dissipation bottleneck of high-power consumption and high-heat flux density chips, high-density servers 1, and high-power density cabinets, and meet the heat dissipation requirements. Liquid cooling is fully covered, and the temperature uniformity is good; tool-free maintenance can be achieved during the disassembly and assembly of the sealed chassis, and when the server 1 is deployed in large quantities, it effectively saves manpower and time.

[0112] It should also be noted that, in this specification, relational terms such as first and second, etc. are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprises", or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device that includes a series of elements includes not only those elements, but also other elements that are not explicitly listed, or also includes elements that are inherent to such process, method, article, or device.

[0113] The server and immersion liquid cooling system provided by the present invention are introduced in detail above. The various embodiments in the specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same and similar parts between the embodiments can be referenced to each other. For the system disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the method part description. It should be pointed out that for ordinary technicians in this technical field, without departing from the principle of the present invention, several improvements and modifications can be made to the present invention, and these improvements and modifications also fall within the scope of protection of the present invention.

Claims

1. A server, characterized in that: Comprising a chassis shell (11), the chassis shell (11) is used to contain cooling liquid, the chassis shell (11) comprising a chassis body (111) and an upper cover (112) buckled onto the chassis body (111); 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) is provided with an electromagnet (1111), and the other is provided with a magnetic attraction member for attracting the electromagnet (1111); so that the box body (111) and the upper cover (112) are sealed and attracted by magnetic attraction; The electromagnet (1111) comprises an iron core and a spiral coil wound around the outer circumference of the iron core; A plurality of mounting holes (1112) for mounting the electromagnets (1111) are provided on the end surface of the chassis shell (11) facing the upper cover (112), and the electromagnets (1111) are vertically inserted into the mounting holes (1112); The side wall of the mounting hole (1112) is provided with a through hole for passing the electric wire of the spiral coil; the electric wires at both ends of the same spiral coil pass through the same through hole; 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) includes at least two regulating branches connected in parallel, the regulating branches include resistors (121) and control switches (122) connected in series, and the first controller controls the opening and closing of the control switch (122) to control the number of resistors (121) connected in parallel to the electromagnet (1111), thereby regulating the current flowing through the electromagnet (1111); A first pressure detection component for detecting pressure information of the coolant is arranged in the chassis shell (11); the first pressure detection component transmits the detected pressure information to the first controller; and the first controller adjusts the current flowing through the electromagnet (1111) according to the pressure information and the number of the electromagnets (1111).

2. The server according to claim 1, characterized in that: The depth of the mounting hole (1112) is greater than the height of the electromagnet (1111); the magnetic attraction component is provided on the end surface of the upper cover (112) facing the box body (111); when the electromagnet (1111) and the magnetic attraction component are attracted, the magnetic attraction component is at least partially located in the mounting hole (1112).

3. The server according to claim 2, characterized in that: The current control circuit (12) is provided with an indicator light connected in series with the electromagnet (1111); when the electromagnet (1111) is in a power-on state, the indicator light corresponding to the electromagnet (1111) lights up; the indicator light and the electromagnet (1111) are provided in a one-to-one correspondence.

4. The server according to claim 1, characterized in that: A liquid level sensor is arranged in the chassis shell (11), and the liquid level sensor is used to detect the liquid level of the coolant in the chassis shell (11). When the liquid level information detected by the liquid level sensor is lower than a preset minimum liquid level value, the coolant is controlled to be added to the chassis shell (11); when the liquid level information detected by the liquid level sensor is higher than a preset maximum liquid level value, the coolant is stopped from being added to the chassis shell (11).

5. The server according to claim 2, characterized in that: A first sealing groove and a sealing ring (1113) installed in the first sealing groove are provided at a position close to the inner side surface of the box body (111) and the end surface facing the upper cover (112); The mounting holes (1112) are provided at positions close to the outer wall of the box body (111) on the end surface of the box body (111) facing the upper cover (112), and the mounting holes (1112) are evenly distributed along the circumference of the end surface of the box body (111) facing the upper cover (112).

6. An immersion liquid cooling system, characterized in that: The invention comprises a heat exchange device (2), a first water distribution device (3), a second water distribution device (4), and a server (1) according to any one of claims 1 to 5; the chassis shell (11) of the server (1) is provided with a liquid inlet (113) and a liquid outlet (114); the first water distribution device (3) is connected to the liquid inlet (113) and the low-temperature cold liquid outlet of the heat exchange device (2); and the second water distribution device (4) is connected to the liquid outlet (114) and the high-temperature cold liquid inlet of the heat exchange device (2).

7. The immersion liquid cooling system according to claim 6, characterized in that: It also comprises a filtering device, the water inlet end of the filtering device is connected to the heat exchange device (2), the water outlet end of the filtering device is connected to the first water distribution device (3), and the filtering device is provided with a filter screen for filtering and removing impurities from the coolant and a pH probe for detecting the pH value of the coolant.

8. The immersion liquid cooling system according to claim 7, characterized in that: It also comprises a liquid replenishing tank (5), a third water distribution device (6) and a suction pump (51) arranged in the liquid replenishing tank (5); the chassis shell (11) of the server (1) is provided with a liquid adding and draining port (115); one end of the third water distribution device (6) is connected to the liquid replenishing tank (5), and the other end is connected to the liquid adding and draining port (115); When the suction pump (51) is in a water absorbing state, the coolant in the chassis shell (11) can flow out from the liquid filling and draining port (115) to the liquid replenishing tank (5); when the suction pump (51) is in a water pumping state, the coolant in the liquid replenishing tank (5) can be replenished into the chassis shell (11) via the third water distribution device (6).

9. The immersion liquid cooling system according to claim 8, characterized in that: A first solenoid valve (7) is provided at the connection between the first water distribution device (3) and the liquid inlet hole (113); a second solenoid valve (8) is provided at the connection between the third water distribution device (6) and the liquid adding and discharging port (115); and a third solenoid valve is provided at the connection between the second water distribution device (4) and the liquid outlet hole (114).

10. The immersion liquid cooling system according to claim 9, characterized in that: It also includes a backup power supply (9), the backup power supply (9) being electrically connected to the electromagnet (1111) on the chassis shell (11), the first solenoid valve (7), the second solenoid 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).

11. The immersion liquid cooling system according to claim 10, characterized in that: It also includes a power failure detection component and a second controller. The power failure detection component is used to detect whether the main power supply in the server (1) is powered off. When the power failure detection component detects that the main power supply is in a power failure state, the power failure information is sent to the second controller, and the second controller controls the backup power supply (9) to supply power.

12. The immersion liquid cooling system according to claim 9, characterized in that: It also comprises a control button (101), the control button (101) being electrically connected to the first solenoid valve (7) and the second solenoid valve (8), the control button (101) being used to control the first solenoid valve (7) and the second solenoid valve (8) to be closed with one button; Or, it further comprises a control button, the number of the control buttons is plural, and the control button is used to control the opening and closing of the corresponding first solenoid valve (7) or the corresponding second solenoid valve (8).

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