Self-adaptive liquid supply and preparation cooling device of liquid cooling cabinet and control method

Abstract

The invention relates to the technical field of self-adaptive liquid supply and preparation, and discloses a self-adaptive liquid supply and preparation cooling device of a liquid cooling cabinet and a control method, the self-adaptive liquid supply and preparation cooling device comprises an expansion filler, a micro air pump, an electric nozzle valve, a liquid supply nozzle group and an electric liquid inlet valve, and a plurality of servers immersed in the cabinet are arranged in the cabinet. The expansion fillers are arranged among the servers, the expansion fillers are fixedly and tightly attached to the back faces of the servers and expand towards the side servers in the single direction during air inlet, the micro air pumps are fixed to the positions, over the expansion fillers, outside the machine cabinet, and the micro air pumps are connected with the expansion fillers through the air inlet pipes and the air outlet pipes. According to the invention, the temperature of each server chip, the temperature in each server flow channel and the temperature of the liquid outlet of the cabinet are sensed through the temperature sensor, and the flow of the liquid supply nozzle group, the size of the server flow channel and the flow of the liquid inlet of the cabinet are changed, so that the self-adaptive liquid supply and preparation of the liquid cooling cabinet are realized.

Description

Technical Field

[0001] The present invention relates to the field of adaptive filling and liquid supply technology, and in particular to an adaptive liquid supply and cooling device for a liquid cooling cabinet and a control method. Background Art

[0002] With the rapid development of Internet information technology, the scale of data centers has expanded rapidly, and the computing performance of servers has been continuously improved. Traditional air-cooling technology has high energy consumption and limited heat dissipation capacity, and it is difficult to meet the heat dissipation requirements of high heat flux density CPU chips. In the immersion liquid cooling system, the liquid directly contacts the electronic components, which has the advantages of low heat transfer resistance and high heat dissipation efficiency. It has good application prospects in the field of electronic component heat dissipation. However, existing immersion liquid cooling cabinets usually cool the servers in the cabinet in a single and uniform manner. There may be a risk of thermal downtime due to sudden high loads in local server chips that cannot be efficiently cooled, and the cooling system energy waste caused by the difficulty in matching the coolant supply in different liquid cooling cabinets with the total heat dissipation requirements in the cabinet. In order to further improve the thermal safety of the liquid-cooled cabinet and reduce cooling energy consumption, the present invention designs an adaptive liquid supply and distribution cooling device for the liquid-cooled cabinet. The temperature of each server chip, the temperature in each server flow channel and the temperature of the cabinet liquid outlet are sensed by a temperature sensor, and the flow size of the liquid supply nozzle group, the size of the server flow channel and the flow size of the cabinet liquid inlet are changed, thereby realizing adaptive liquid supply and distribution of the liquid-cooled cabinet, eliminating local hot spots of the liquid-cooled cabinet in the server, keeping the server chip temperature within a safe range at all times, and reducing cooling energy consumption while improving the thermal safety of the liquid-cooled cabinet.

[0003] Based on the above reasons, the present invention provides a liquid cooling cabinet adaptive liquid supply and distribution cooling device and control method. Summary of the invention

[0004] The purpose of the present invention is to overcome the shortcomings of the prior art and provide a liquid cooling cabinet adaptive liquid supply and distribution cooling device and control method. The temperature of each server chip, the temperature in each server flow channel and the temperature of the cabinet liquid outlet are sensed by a temperature sensor, and the flow size of the liquid supply nozzle group, the server flow channel size and the cabinet liquid inlet flow size are changed, thereby realizing adaptive liquid supply and distribution of the liquid cooling cabinet. When it is monitored that the temperature of the chip in a certain server is too high, the flow size of the liquid supply nozzle group is increased. When it is monitored that the temperature in the server flow channel in a certain area is too high, the server flow channel size is reduced, thereby improving the heat dissipation efficiency of the server hotspot and enhancing the safety of the server. When it is monitored that the temperature of the liquid outlet of the liquid cooling cabinet is low, the liquid inlet flow size of the liquid cooling cabinet is reduced to reduce the energy consumption of the cooling system.

[0005] In order to achieve the purpose of the present invention, the technical solution adopted by the present invention is:

[0006] The present invention discloses an adaptive liquid supply and distribution cooling device for a liquid cooling cabinet, comprising an expansion filler, a micro air pump, an electric nozzle valve, a liquid supply nozzle group and an electric liquid inlet valve. A plurality of servers immersed therein are arranged in the cabinet, the expansion filler is arranged between the servers, the expansion filler is fixed and tightly attached to the back of the server, and expands in a single direction toward the side servers when air is taken in, the micro air pump is fixed outside the cabinet directly above each expansion filler, each micro air pump is connected to the expansion filler through an air inlet pipe and an air outlet pipe, the electric nozzle valve is arranged at the end of a liquid supply riser and connected to the liquid supply nozzle group, and the electric liquid inlet valve is located at the liquid inlet of the liquid supply main pipe of the liquid cooling cabinet.

[0007] The air inlet and the air outlet above the expandable filler are connected to the air inlet pipe and the air outlet pipe respectively, the other end of the air inlet pipe is connected to the inflation end of the micro air pump, and the other end of the air outlet pipe is connected to the suction end of the micro air pump.

[0008] The expandable filler expands and contracts by air intake and exhaust of a micro air pump. When air is taken in, the expandable filler expands toward the other end of the server, and when air is exhausted, it shrinks to a corresponding volume size according to the initial inertia. The expandable filler satisfies the volume change formula: ΔV=V0αΔT, where V0 and α are the initial volume and expansion coefficient of the expandable filler, respectively.

[0009] The liquid supply nozzle group sprays liquid in an arc shape with an inclined angle upward toward the server, and the chip on the server faces the center of the liquid spray. The temperature sensor monitors the chip on the server.

[0010] A nozzle valve motor is connected above the electric nozzle valve, and the nozzle valve motor is connected to a temperature sensor on a chip in the server through a signal transmission line.

[0011] The micro air pump is connected to an air pump controller via a signal transmission line, and the other end of the air pump controller is connected to a second temperature sensor via a signal transmission line.

[0012] The liquid supply main pipe is located below the liquid cooling cabinet near the cabinet wall, and is respectively connected to each liquid supply branch pipe. The liquid supply branch pipe is located below the flow channel between the servers. The liquid supply riser supplies liquid upward, and its lower end is connected to the liquid supply branch pipe, and its upper end is connected to the liquid supply nozzle group.

[0013] The third temperature sensor is located at the liquid outlet of the liquid cooling cabinet and is connected to the liquid inlet valve motor through a signal transmission line. The liquid outlet of the liquid cooling cabinet is connected to the CDU cooling device. One end of the CDU cooling device is connected to an external cooling tower and the other end is connected to a liquid storage tank. The liquid storage tank is connected to each liquid cooling cabinet through a pipeline.

[0014] The liquid supply nozzle group includes a transverse tube, the outside of which is connected to an atomizing nozzle, the inside of which is equipped with an impeller, and both ends of the impeller are connected to half gears, the outside of the half gears are meshingly connected to a gear frame, the outside of the gear frame is connected to a transverse arm, the top of the transverse arm is connected to a connecting rod through a hinge, and the other end of the connecting rod is connected to the atomizing nozzle through a hinge, track blocks are evenly arranged on the outside of the transverse tube, the inside of the track block is slidably connected to a guide block, and the guide block is connected to the gear frame.

[0015] A liquid cooling cabinet adaptive liquid supply and distribution cooling device and control method, including the following three controls:

[0016] Control 1:

[0017] The temperature sensor monitors the chip temperature T in the server in real time i , set the minimum setting value T of the chip temperature in the server min (i) and the maximum setting value T max (i).

[0018] Step S1, if T i ≤T min (i) The temperature sensor transmits a signal to the nozzle valve motor, and the nozzle valve motor controls the electric nozzle valve to control the valve opening of the electric nozzle valve so that the valve opening reaches the minimum value, otherwise, execute step S2.

[0019] Step S2: If T min (i)<T i <T max (i) The nozzle valve motor controls the electric nozzle valve so that the opening of the electric nozzle valve changes with T i The temperature changes linearly. i -T min (i)] is larger, the valve opening is larger. If T i =T max (i) The opening of the electric nozzle valve reaches the maximum value, otherwise, execute step S3.

[0020] Step S3, if T i >T max (i) The opening of the electric nozzle valve has reached the maximum value, and the maximum value is maintained unchanged, otherwise, step S1 is executed.

[0021] Control 2:

[0022] The second temperature sensor monitors the temperature T in the server flow channel in real time j , set the minimum setting value T of the chip temperature in the server min (j) and the maximum setting value T max (j).

[0023] Step S1, if T j <T min (j), the volume of the expanded filler does not change, which is the initial minimum volume V0, and the server flow channel is at its maximum. If T j =T min (j), temperature difference ΔT=0, volume change ΔV=0, the volume of the expanded filler does not change, the server flow channel is at the maximum value, otherwise execute step S2.

[0024] Step S2: If T min (j)<T j <T max (j), the second temperature sensor transmits a signal to the air pump controller to control the micro air pump to inflate the expansion filler, so that the volume of the expansion filler changes linearly with the temperature difference. When ΔT is larger, the server flow channel is smaller. If T j =T max (j), at this time ΔT=T set2 -T set1 is the maximum value of the volume change ΔV, the expanded filler reaches the maximum volume, and the server flow channel is the minimum, otherwise execute step S3.

[0025] Step S3, if T j >T max (j), the expanded filler has reached its maximum volume and the temperature difference ΔT is greater than T set2 -T set1 The volume does not change, and the server flow path remains at the minimum value.

[0026] Control three:

[0027] The third temperature sensor monitors the server liquid outlet temperature T of the liquid cooling cabinet in real time k , set the minimum setting value T of the server outlet temperature min (k) and the maximum setting value T max (k).

[0028] Step S1, if T k <T min (k), the third temperature sensor transmits the signal to the liquid inlet valve motor, and the liquid inlet valve motor controls the electric liquid inlet valve to control the valve opening to the minimum value; if T k =T min (k), the opening of the electric liquid inlet valve is the minimum value. Otherwise, execute S2.

[0029] Step S2: If T min (k)<T k <T max (k), the opening of the electric inlet valve changes with T j It changes linearly. When [Tk -T min (k)] is larger, the valve opening is larger; if T k =T max (k), the opening of the electric liquid inlet valve reaches the maximum value. Otherwise, execute S3.

[0030] Step S3, if T k >T max (k), the opening of the electric liquid inlet valve remains at the maximum value and does not change. Otherwise, execute S1.

[0031] The beneficial effects of the present invention are:

[0032] (1) The present invention senses the chip temperature of each server, the temperature in each server flow channel and the temperature of the cabinet liquid outlet through a temperature sensor, changes the flow rate of the liquid supply nozzle group, the server flow channel size and the cabinet liquid inlet flow rate, thereby realizing adaptive liquid supply and distribution for the liquid cooling cabinet. When it is detected that the chip temperature in a certain server is too high, the flow rate of the liquid supply nozzle group is increased. When it is detected that the temperature in the server flow channel in a certain area is too high, the server flow channel size is reduced, thereby improving the heat dissipation efficiency of the server hotspot and enhancing the safety of the server. When it is detected that the temperature of the liquid outlet of the liquid cooling cabinet is low, the liquid inlet flow rate of the liquid cooling cabinet is reduced to reduce the energy consumption of the cooling system.

[0033] (2) The structure of the present invention cleverly utilizes the thermal expansion and contraction properties of an object, making the overall structure simpler and eliminating the need for complex electronic mechanical devices to control it, thereby reducing the cost of the entire structure.

[0034] (3) The present invention recovers the flow force of the water flow to drive the atomizing nozzle in the liquid supply nozzle group to perform a swinging water spray, thereby improving the cooling effect of the nozzle on the device. At the same time, the half gear can be hollowed out to accelerate the flow speed of the driving water flow during rotation, thereby improving the overall heat dissipation effect of the device.

[0035] (4) The control method of the present invention transmits signals from the temperature sensor. The flow rate of the liquid supply nozzle group, the flow channel of the server and the flow rate of the liquid inlet of the liquid cooling cabinet can be flexibly adjusted according to the temperature in the flow channel of the server. This reduces energy consumption while avoiding overheating of chips in the server and improves the stability of the server. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present disclosure and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0037] Figure 1 The structure of the device of the present invention is schematically shown from the side Figure 1 ;

[0038] Figure 2 The structure of the device of the present invention is shown in a top view Figure 2 ;

[0039] Figure 3 This is a schematic diagram of a liquid cooling cabinet cluster cooling system for a data center according to the present invention;

[0040] Figure 4 This is a schematic diagram of an adaptive liquid supply device in Example 2 of the present invention;

[0041] Figure 5 It is a flow chart of the control method 1 of the adaptive filling liquid supply device of the present invention;

[0042] Figure 6 It is a flow chart of the second control method of the adaptive filling liquid supply device of the present invention;

[0043] Figure 7 It is a flow chart of the third control method of the adaptive filling liquid supply device of the present invention;

[0044] Figure 8 This is a schematic diagram of the structure of the liquid supply nozzle assembly of the present invention;

[0045] Fig. 9 This is an internal cross-sectional view of the liquid supply nozzle assembly of the present invention.

[0046] In the figure: 1. expansion filler; 2. micro air pump; 3. electric nozzle valve; 4. second temperature sensor; 5. server; 6. air inlet pipe; 7. exhaust pipe; 8. liquid supply riser; 9. liquid supply nozzle group; 91. cross pipe; 92. atomizing nozzle; 93. impeller; 94. half gear; 95. gear frame; 96. guide block; 97. track block; 98. cross arm; 99. connecting rod; 10. air pump controller; 11. nozzle valve motor; 12. electric liquid inlet valve; 13. liquid cooling cabinet; 14. liquid supply main pipe; 15. liquid supply branch pipe; 16. third temperature sensor; 17. CDU cooling device; 18. cooling tower; 19. liquid storage tank; 20. temperature sensor; 21. liquid inlet valve motor. DETAILED DESCRIPTION

[0047] In order to facilitate those skilled in the art to understand and implement the present invention, the steps of the method proposed in the present invention are described in detail below:

[0048] Example 1

[0049] like Figure 1 , Figure 2 , Figure 3As shown, this example discloses an adaptive liquid supply and distribution cooling device for a liquid-cooled cabinet, comprising an expansion filler 1, a micro air pump 2, an electric nozzle valve 3, a liquid supply nozzle group 9 and an electric liquid inlet valve 12. A plurality of servers 5 immersed therein are arranged in the cabinet 13, the expansion filler 1 is arranged between each server 5, the expansion filler 1 is fixed and tightly attached to the back of the server 5, and expands in a single direction toward the side server 5 when air is taken in, the micro air pump 2 is fixed outside the cabinet directly above each expansion filler 1, and each micro air pump 2 is connected to the expansion filler 1 through an air intake pipe 6 and an exhaust pipe 7, the electric nozzle valve 3 is arranged at the end of the liquid supply riser 8 and connected to the liquid supply nozzle group 9, and the electric liquid inlet valve 12 is located at the liquid inlet of the liquid supply main pipe 14 of the liquid-cooled cabinet 13.

[0050] Specifically, the air inlet and the air outlet above the expandable filler 1 are connected to the air inlet pipe 6 and the exhaust pipe 7 respectively, the other end of the air inlet pipe 6 is connected to the inflation end of the micro air pump 2, and the other end of the exhaust pipe 7 is connected to the suction end of the micro air pump 2.

[0051] Specifically, the expandable filler 1 expands and contracts by air intake and exhaust of the micro air pump 2. When air is taken in, the expandable filler 1 expands toward the other end of the server 5, and when air is exhausted, it shrinks to a corresponding volume size according to the initial inertia. The expandable filler 1 satisfies the volume change formula: ΔV=V0αΔT, where V0 and α are the initial volume and expansion coefficient of the expandable filler 1, respectively.

[0052] Specifically, the liquid supply nozzle group 9 sprays liquid in an arc shape with an inclined angle upward to the server 5, and the chip on the server 5 faces the center of the liquid spray. The temperature sensor 20 monitors the chip on the server.

[0053] Specifically, a nozzle valve motor 11 is connected above the electric nozzle valve 3 , and the nozzle valve motor 11 is connected to an on-chip temperature sensor 20 in the server 5 through a signal transmission line.

[0054] Specifically, the micro air pump 2 is connected to the air pump controller 10 via a signal transmission line, and the other end of the air pump controller 10 is connected to the second temperature sensor 4 via a signal transmission line.

[0055] Specifically, the liquid supply main pipe 14 is located below the liquid cooling cabinet 13 and close to the cabinet wall, and is respectively connected to each liquid supply branch pipe 15. The liquid supply branch pipe 15 is located below the flow channel between the servers 5. The liquid supply riser 8 supplies liquid upward, and its lower end is connected to the liquid supply branch pipe 15, and its upper end is connected to the liquid supply nozzle group 9.

[0056] Specifically, the third temperature sensor 16 is located at the liquid outlet of the liquid cooling cabinet 13, and is connected to the liquid inlet valve motor 21 through a signal transmission line. The liquid outlet of the liquid cooling cabinet 13 is connected to the CDU cooling device 17. One end of the CDU cooling device 17 is connected to the external cooling tower 18, and the other end is connected to the liquid storage tank 19. The liquid storage tank 19 is connected to each liquid cooling cabinet 13 through a pipeline.

[0057] Specifically, the liquid supply nozzle group 9 includes a transverse tube 91, which is connected to the liquid supply riser 8. The outside of the transverse tube 91 is connected to an atomizing nozzle 92. The inside of the transverse tube 91 is equipped with an impeller 93, and both ends of the impeller 93 are connected to half gears 94. The outside of the half gear 94 is meshingly connected to a tooth frame 95, and the outside of the tooth frame 95 is connected to a cross arm 98. The top of the cross arm 98 is connected to a connecting rod 99 through a hinge, and the other end of the connecting rod 99 is connected to the atomizing nozzle 92 through a hinge. Track blocks 97 are evenly distributed on the outside of the transverse tube 91. The inside of the track block 97 is slidably connected to a guide block 96, and the guide block 96 is connected to the tooth frame 95. The half gear 94 is hollowed out to increase the resistance to the water flow when it rotates, thereby driving the water flow to move.

[0058] Specifically, the atomizing nozzle 92 includes a nozzle and a hose, and the hose is connected to the transverse pipe 91. When the water source inside the liquid supply riser 8 enters the transverse pipe 91, the impeller 93 is driven to rotate by the water flow power, and then the half gear 94 is driven to rotate, thereby driving the gear frame 95 to reciprocate left and right, and finally the atomizing nozzle 92 is driven to swing through the cross arm 98 and the connecting rod 99.

[0059] Specifically, the impeller 93 includes a roller, blades are evenly distributed on the outside of the roller, a horizontal axis is inserted into the inside of the roller, the horizontal axis is connected to the horizontal tube 91 through a sealed bearing, the horizontal axis is connected to the half gear 94, teeth are evenly distributed on the right side of the outside of the half gear 94, teeth are set on the top and bottom of the gear frame 95, and the half gear 94 can drive the gear frame 95 to reciprocate once by rotating one circle.

[0060] A liquid cooling cabinet 13 adaptive liquid supply and distribution cooling device and control method, including the following three controls:

[0061] Control 1:

[0062] The temperature sensor 20 monitors the chip temperature T in the server 5 in real time. i , set the minimum setting value T of the chip temperature in server 5 min (i) and the maximum setting value T max (i).

[0063] Step S1, if T i ≤T min(i) The temperature sensor 20 transmits a signal to the nozzle valve motor 11, and the nozzle valve motor 11 controls the electric nozzle valve 3 to control the valve opening of the electric nozzle valve 3 so that the valve opening reaches the minimum value, otherwise, execute step S2.

[0064] Step S2: If T min (i)<T i <T max (i) The nozzle valve motor 11 controls the electric nozzle valve 3 so that the valve opening of the electric nozzle valve 3 changes with T. i The temperature changes linearly. i -T min (i)] is larger, the valve opening is larger. If T i =T max (i) The valve opening of the electric nozzle valve 3 reaches the maximum value, otherwise, execute step S3.

[0065] Step S3, if T i >T max (i) The valve opening of the electric nozzle valve 3 has reached the maximum value, and the maximum value is maintained unchanged, otherwise, step S1 is executed.

[0066] Control 2:

[0067] The second temperature sensor 4 monitors the temperature T in the flow channel of the server 5 in real time j , set the minimum setting value T of the chip temperature in server 5 min (j) and the maximum setting value T max (j).

[0068] Step S1, if T j <T min (j), the volume of the expanded filler 1 does not change, which is the initial minimum volume V0, and the flow channel of the server 5 is at the maximum. If T j =T min (j), temperature difference ΔT=0, volume change ΔV=0, the volume of the expansion filler 1 does not change, the flow channel of the server 5 is at the maximum value, otherwise execute step S2.

[0069] Step S2: If T min (j)<T j <T max (j), the second temperature sensor 4 transmits a signal to the air pump controller 10, which controls the micro air pump 2 to inflate the expansion filler 1, so that the volume of the expansion filler 1 changes linearly with the temperature difference. When ΔT is larger, the flow channel of the server 5 is smaller. If T j =T max (j), at this time ΔT=T set2 -T set1is the maximum value of the volume change ΔV, the expanded filler 1 reaches the maximum volume, and the flow channel of the server 5 is the minimum, otherwise, step S3 is executed.

[0070] Step S3, if T j >T max (j), the expansion filler 1 has reached its maximum volume, and the temperature difference ΔT is greater than T set2 -T set1 If the volume does not change, the flow channel of server 5 maintains the minimum value and does not change, otherwise, step S1 is executed.

[0071] Control three:

[0072] The third temperature sensor 16 monitors the server liquid outlet temperature T of the liquid cooling cabinet 13 in real time. k , set the minimum setting value T of the server outlet temperature min (k) and the maximum setting value T max (k).

[0073] Step S1, if T k <T min (k), the third temperature sensor 16 transmits a signal to the liquid inlet valve motor 21, and the liquid inlet valve motor 21 controls the electric liquid inlet valve 12 to control the valve opening to the minimum value; if T k =T min (k), the valve opening of the electric liquid inlet valve 12 is the minimum value. Otherwise, execute S2.

[0074] Step S2: If T min (k)<T k <T max (k), the valve opening of the electric liquid inlet valve 12 changes with T j It changes linearly. When [T k -T min (k)] is larger, the valve opening is larger; if T k =T max (k), the valve opening of the electric liquid inlet valve 12 reaches the maximum value. Otherwise, execute S3.

[0075] Step S3, if T k >T max (k), the valve opening of the electric liquid inlet valve 12 remains at the maximum value and does not change. Otherwise, execute S1.

[0076] Example 2

[0077] In this embodiment, in order to avoid the failure of the temperature sensor 20, the second temperature sensor 4 and the third temperature sensor 16 to transmit signals, the electric nozzle valve 3, the micro air pump 2 and the electric liquid inlet valve 12 cannot be controlled in time, resulting in excessive temperature of the server 5, thereby causing data loss and damage in the server 5, when such a phenomenon occurs, since the electric nozzle valve 3, the micro air pump 2 and the electric liquid inlet valve 12 cannot receive the signals of the temperature sensor 20, the second temperature sensor 4 and the third temperature sensor 16 respectively, the electric nozzle valve 3, the micro air pump 2 and the electric liquid inlet valve 12 are emergency controlled. Under the emergency control, the valve opening of the electric nozzle valve 3 and the electric liquid inlet valve 12 reaches the maximum, the micro air pump 2 inflates the expansion filler 1 to maximize the volume, and the server flow channel reaches the minimum, such as Figure 4 shown.

[0078] It should be noted that in the above embodiments, the temperature sensor 20, the second temperature sensor 4 and the third temperature sensor 16 transmit signals to the nozzle valve motor 11, the air pump controller 10 and the liquid inlet valve motor 21, thereby realizing the control of the flow size of the liquid supply nozzle group 9, the flow channel size of the server 5 and the liquid inlet flow size of the liquid cooling cabinet 13. The above is only an embodiment of the present invention and does not limit the patent scope of the present invention. All equivalent transformations made using the contents of the specification and drawings of the present invention or directly or indirectly used in related technical fields are also included in the patent protection scope of the present invention.

Claims

1. A liquid cooling cabinet adaptive liquid supply and distribution cooling device, characterized in that: The invention comprises an expansion filler (1), a micro air pump (2), an electric nozzle valve (3), a liquid supply nozzle group (9), a liquid supply riser (8), a liquid cooling cabinet (13) and an electric liquid inlet valve (12). The cabinet (13) is provided with a server (5) immersed therein. The expansion filler (1) is arranged between the servers (5). The expansion filler (1) is fixed and tightly attached to the back of the server (5). The micro air pump (2) is fixed outside the cabinet directly above each expansion filler (1). The micro air pump (2) and the expansion filler (1) are connected to an air outlet pipe (7) via an air inlet pipe (6). The electric nozzle valve (3) is arranged at the end of the liquid supply riser (8). The liquid supply riser (8) is also connected to the liquid supply nozzle group (9). The electric liquid inlet valve (12) is located at the liquid inlet of the liquid supply main pipe (14) of the liquid cooling cabinet (13).

2. The liquid cooling cabinet adaptive liquid supply and distribution cooling device according to claim 1, characterized in that: The air inlet and the air outlet above the expandable filler (1) are respectively connected to an air inlet pipe (6) and an air outlet pipe (7); the other end of the air inlet pipe (6) is connected to an inflation end of a micro air pump (2); and the other end of the air outlet pipe (7) is connected to an air suction end of the micro air pump (2).

3. The liquid cooling cabinet adaptive liquid supply and distribution cooling device according to claim 1, characterized in that: The expandable filler (1) expands and contracts through the intake and exhaust of air by the micro air pump (2). When the expandable filler (1) is intaken, it expands toward the other end of the server (5). The expandable filler (1) satisfies the volume change formula: ΔV=V0αΔT, where V0 and α are the initial volume and expansion coefficient of the expandable filler (1), respectively.

4. The liquid cooling cabinet adaptive liquid supply and distribution cooling device according to claim 1, characterized in that: The liquid supply nozzle group (9) sprays liquid in an arc shape at an inclined angle upwards toward the server (5), the chip on the server (5) is facing the center of the liquid spray, and a temperature sensor (20) is installed on the outside of the server (5), and the temperature sensor (20) monitors the chip on the server.

5. The liquid cooling cabinet adaptive liquid supply and distribution cooling device according to claim 1, characterized in that: A nozzle valve motor (11) is connected above the electric nozzle valve (3), and the nozzle valve motor (11) is connected to a temperature sensor (20) on a chip in the server (5) via a signal transmission line.

6. The liquid cooling cabinet adaptive liquid supply and distribution cooling device according to claim 1, characterized in that: The micro air pump (2) is connected to an air pump controller (10) via a signal transmission line, and the other end of the air pump controller (10) is connected to a second temperature sensor (4) via a signal transmission line.

7. The liquid cooling cabinet adaptive liquid supply and distribution cooling device according to claim 1, characterized in that: The liquid supply main pipe (14) is located below the liquid cooling cabinet (13) and close to the cabinet wall, and is respectively connected to each liquid supply branch pipe (15). The liquid supply branch pipe (15) is located below the flow channel between the servers (5). The liquid supply riser (8) supplies liquid upward, and its lower end is connected to the liquid supply branch pipe (15), and its upper end is connected to the liquid supply nozzle group (9).

8. The liquid cooling cabinet adaptive liquid supply and distribution cooling device according to claim 1, characterized in that: A third temperature sensor (16) is installed at the liquid outlet of the liquid cooling cabinet (13), and the third temperature sensor (16) is connected to the liquid inlet valve motor (21) via a signal transmission line. The liquid outlet of the liquid cooling cabinet (13) is connected to a CDU cooling device (17). One end of the CDU cooling device (17) is connected to an external cooling tower (18), and the other end is connected to a liquid storage tank (19). The liquid storage tank (19) is connected to each liquid cooling cabinet (13) via a pipeline.

9. The liquid cooling cabinet adaptive liquid supply and distribution cooling device according to claim 1, characterized in that: The liquid supply nozzle group (9) comprises a transverse tube (91), the outside of the transverse tube (91) is connected to an atomizing nozzle (92), the inside of the transverse tube (91) is equipped with an impeller (93), and both ends of the impeller (93) are connected to half gears (94), the outside of the half gear (94) is meshingly connected to a gear frame (95), the outside of the gear frame (95) is connected to a transverse arm (98), the top of the transverse arm (98) is connected to a connecting rod (99) through a hinge, and the other end of the connecting rod (99) is connected to the atomizing nozzle (92) through a hinge, and the outside of the transverse tube (91) is evenly arranged with track blocks (97), the inside of the track block (97) is slidably connected to a guide block (96), and the guide block (96) is connected to the gear frame (95).

10. A method for controlling a cooling device, comprising the liquid cooling cabinet adaptive liquid supply and distribution cooling device according to any one of claims 1 to 9, characterized in that: It includes the following three controls: Control 1: The temperature sensor (20) monitors the chip temperature Ti in the server (5) in real time and sets the minimum setting value T of the chip temperature in the server (5) min (i) and the maximum setting value T max (i); Step S1, if T i ≤T min (i), the temperature sensor (20) transmits a signal to the nozzle valve motor (11), and the nozzle valve motor (11) controls the electric nozzle valve (3), controls the valve opening of the electric nozzle valve (3), and makes the valve opening reach the minimum value, otherwise, execute step S2; Step S2: If T min (i) <T i <T max (i) The nozzle valve motor (11) controls the electric nozzle valve (3) so that the valve opening of the electric nozzle valve (3) changes with T i The temperature changes linearly. i -T min (i)] is larger, the valve opening is larger. If T i =T max (i) the valve opening of the electric nozzle valve (3) reaches the maximum value, otherwise, step S3 is executed; Step S3, if T i >T max (i) the valve opening of the electric nozzle valve (3) has reached the maximum value and the maximum value is maintained unchanged, otherwise, step S1 is executed; Control 2: The second temperature sensor (4) monitors the temperature T in the flow channel of the server in real time j , set the minimum setting value T of the chip temperature in the server (5) min (j) and the maximum setting value T max (j); Step S1, if T j <T min (j), the volume of the expanded filler (1) does not change, and is the initial minimum volume V0, and the flow channel of the server (5) is at its maximum. If T j =T min (j), temperature difference △T=0, volume change △V=0, the volume of the expansion filler (1) does not change, the flow channel of the server (5) is at the maximum value, otherwise, step S2 is executed; Step S2: If T min (j) <T j <T max (j), the second temperature sensor (4) transmits a signal to the air pump controller (10), which controls the micro air pump (2) to inflate the expansion filler (1), so that the volume of the expansion filler (1) changes linearly with the temperature difference. When ΔT is larger, the flow channel of the server (5) is smaller. If T j =T max (j), at this time △T=T set2 -T set1 is the maximum value of the volume change △V, the expanded filler (1) reaches the maximum volume, and the flow channel of the server (5) is the minimum, otherwise, step S3 is executed; Step S3, if T j >T max (j), the expansion filler (1) has reached its maximum volume, and the temperature difference △T is greater than T set2 -T set1 The volume does not change, and the flow channel of the server (5) remains at the minimum value and does not change; Control three: The third temperature sensor (16) monitors the server liquid outlet temperature T of the liquid cooling cabinet in real time. k , set the minimum setting value T of the server outlet temperature min (k) and the maximum setting value T max (k); Step S1, if T k <T min (k), the third temperature sensor (16) transmits a signal to the liquid inlet valve motor (21), and the liquid inlet valve motor (21) controls the electric liquid inlet valve (12) to control the valve opening to the minimum value; if T k =T min (k), the valve opening of the electric liquid inlet valve (12) is at the minimum value; Otherwise, execute S2; Step S2: If T min (k) <T k <T max (k), the opening of the electric inlet valve (12) changes with T j It changes linearly. When [T k -T min (k)] is larger, the valve opening is larger; if T k =T max (k), the valve opening of the electric liquid inlet valve (12) reaches the maximum value; Otherwise, execute S3; Step S3, if T k >T max (k), the valve opening of the electric liquid inlet valve (12) remains at the maximum value and does not change; otherwise, execute S1.

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