Temperature control device and method based on gravity assisted heat pipe and liquid cooling data center thereof

Abstract

The embodiment of the invention provides a temperature control device and method based on a gravity heat pipe and a liquid cooling data center thereof. The device comprises a gravity heat pipe assembly and a liquid cooling box provided with a sensor assembly. One end of the liquid cooling box is connected to one end of the gravity heat pipe assembly through a first pipeline; the other end of the liquid cooling box is connected to the other end of the gravity heat pipe assembly through a second pipeline; an electronic expansion valve is arranged on the second pipeline; the electronic expansion valve is connected with the sensor assembly; the sensing assembly is used for collecting a temperature value in the liquid cooling box; the electronic expansion valve is used for controlling the valve of the electronic expansion valve to be opened under the condition that the temperature value is larger than a set temperature value, and the circulation amount of the gravity assisted heat pipe assembly and the liquid cooling box is increased; and under the condition that the temperature value is smaller than or equal to a temperature set value, a valve of the liquid cooling box is controlled to be opened to be small, and the circulation amount of the gravity heat pipe assembly and the liquid cooling box is adjusted to be small.

Description

Technical Field

[0001] The present application relates to the field of temperature control technology, and in particular to a temperature control device and method based on a gravity heat pipe and a liquid-cooled data center thereof. Background Art

[0002] Gravity heat pipe circulation - heat conversion is unstable, and the temperature of heat exchange in the phase change system cannot be accurately controlled; when the temperature can be controlled, the degree of influence on the filling rate will be reduced. There is currently no effective solution to this problem. Summary of the invention

[0003] In order to solve the existing technical problems, the embodiments of the present application provide a temperature control device and method based on a gravity heat pipe and a liquid-cooled data center thereof.

[0004] To achieve the above purpose, the technical solution of the embodiment of the present application is implemented as follows:

[0005] The embodiment of the present application provides a temperature control device based on a gravity heat pipe, the device comprising: a gravity heat pipe assembly and a liquid cooling box provided with a sensor assembly; one end of the liquid cooling box is connected to one end of the gravity heat pipe assembly through a first pipeline; the other end of the liquid cooling box is connected to the other end of the gravity heat pipe assembly through a second pipeline; an electronic expansion valve is provided on the second pipeline; the electronic expansion valve is connected to the sensor assembly;

[0006] The sensor assembly is used to collect the temperature value in the liquid cooling box;

[0007] The electronic expansion valve is used to control its own valve to open wider when the temperature value is greater than the temperature setting value, thereby increasing the flow rate between the gravity heat pipe assembly and the liquid cooling box; and to control its own valve to open narrower when the temperature value is less than or equal to the temperature setting value, thereby reducing the flow rate between the gravity heat pipe assembly and the liquid cooling box.

[0008] In the above solution, a liquid storage unit is provided between the gravity heat pipe assembly and the electronic expansion valve;

[0009] The liquid storage unit is used to store the cooling medium flowing out of the gravity heat pipe assembly to achieve heat exchange during the condensation process of the gravity heat pipe assembly and / or the evaporation process of the liquid cooling box.

[0010] In the above scheme, the device further includes a control component; the gravity heat pipe component includes a fan and a gravity heat pipe; the fan is located on the gravity heat pipe; the sensor component includes a temperature sensor; the control component is connected to the fan and the temperature sensor respectively; the diameter of the first pipeline and the diameter of the second pipeline are N:1, and N is an integer greater than or equal to 2;

[0011] The control component is used to control the working frequency of the fan to remain unchanged and to control the temperature sensor to collect the temperature value in the liquid cooling box.

[0012] In the above scheme, the device includes a control component; the gravity heat pipe component includes a fan and a gravity heat pipe; the fan is located on the gravity heat pipe; the control component is connected to the fan;

[0013] The control component is also used to obtain the coefficient of variation of the temperature in the liquid cooling box, and determine the range of the temperature setting value based on the coefficient of variation of the temperature; when the temperature value is within the range of the temperature setting value, the frequency of controlling the fan to operate remains unchanged; when the temperature value is not within the range of the temperature setting value, the frequency of controlling the fan to operate changes.

[0014] In the above scheme, the control component is also used to delay the second preset time to control the change of the fan operating frequency when the fan operating frequency changes multiple times within the first preset time.

[0015] In the above scheme, a gas circulation pump is arranged on the first pipeline; the electronic expansion valve comprises a thermal expansion valve or an electric two-way valve; the control component is connected to the gas circulation pump;

[0016] The control component is also used to control the operation of the gas circulation pump to increase the flow rate of the gas in the liquid cooling box into the gravity heat pipe assembly; and to control the thermal expansion valve or the electric two-way valve to increase the flow rate between the gravity heat pipe assembly and the liquid cooling box.

[0017] The embodiment of the present application provides a temperature control method based on a gravity heat pipe, which is applied to the temperature control device based on a gravity heat pipe described above; the method comprises:

[0018] Collect the temperature value in the liquid cooling box;

[0019] When the temperature value is greater than the temperature setting value, the valve of the electronic expansion valve is controlled to be opened wider, thereby increasing the flow rate between the gravity heat pipe assembly and the liquid cooling box;

[0020] When the temperature value is less than or equal to the temperature setting value, the valve opening of the electronic expansion valve is controlled to be small, and the flow rate between the gravity heat pipe assembly and the liquid cooling box is reduced.

[0021] In the above solution, the method further includes:

[0022] The cooling medium flowing out of the gravity heat pipe assembly is stored to achieve heat exchange during the condensation process of the gravity heat pipe assembly and / or during the evaporation process of the liquid cooling box.

[0023] In the above solution, the method further includes:

[0024] The frequency of the fan operation is controlled to remain unchanged and the temperature sensor is controlled to collect the temperature value in the liquid cooling box.

[0025] In the above solution, the method further includes:

[0026] Obtaining a coefficient of variation of the temperature in the liquid cooling box;

[0027] determining a range of the temperature setting value based on a coefficient of variation of the temperature;

[0028] When the temperature value is within the range of the temperature setting value, the frequency of controlling the fan to work remains unchanged;

[0029] When the temperature value is not within the range of the temperature setting value, the frequency of controlling the operation of the fan is changed.

[0030] In the above solution, when the operating frequency of the fan changes, the method further includes:

[0031] If the frequency of the fan operation changes multiple times within the first preset time, the frequency of the fan operation is controlled to change after a delay of a second preset time.

[0032] An embodiment of the present invention further provides a liquid cooling data center, which includes any of the above-mentioned devices.

[0033] The present application also provides a computer program product, including a computer program, which implements any step of the above-mentioned method when executed by a processor.

[0034] The present application also provides a storage medium on which a computer program is stored, and when the computer program is executed by a processor, any step of the above-mentioned method is implemented.

[0035] The embodiment of the present application provides a temperature control device and method based on gravity heat pipe and a liquid-cooled data center thereof, wherein the device comprises: a gravity heat pipe assembly and a liquid cooling box provided with a sensor assembly; one end of the liquid cooling box is connected to one end of the gravity heat pipe assembly through a first pipeline; the other end of the liquid cooling box is connected to the other end of the gravity heat pipe assembly through a second pipeline; an electronic expansion valve is arranged on the second pipeline; the electronic expansion valve is connected to the sensor assembly; the sensor assembly is used to collect the temperature value in the liquid cooling box; the electronic expansion valve is used to control its own valve to open wider when the temperature value is greater than the temperature setting value, thereby increasing the flow rate between the gravity heat pipe assembly and the liquid cooling box; and to control its own valve to open narrower when the temperature value is less than or equal to the temperature setting value, thereby decreasing the flow rate between the gravity heat pipe assembly and the liquid cooling box. The technical solution of the embodiment of the present application is adopted, and the temperature value in the liquid cooling box is collected through the temperature sensor. When the temperature value is greater than the temperature setting value, the valve of the thermal expansion valve is controlled to open wider, and a larger flow rate is automatically adjusted; when the temperature value is less than or equal to the temperature setting value, the valve of the thermal expansion valve is controlled to open narrower, and a smaller flow rate is automatically adjusted. That is, the temperature in the heat exchange of the phase change system is accurately controlled. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 A schematic diagram of a temperature control device based on a gravity heat pipe provided in an embodiment of the present application;

[0037] Figure 2 Another schematic diagram of a temperature control device based on a gravity heat pipe provided in an embodiment of the present application;

[0038] Figure 3 The application scenario intention of a temperature control device based on a gravity heat pipe provided in an embodiment of the present application;

[0039] Figure 4 The present invention is a flowchart of a temperature control method based on a gravity heat pipe according to an embodiment of the present application. DETAILED DESCRIPTION

[0040] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the specific technical solution of the invention will be further described in detail below in conjunction with the drawings in the embodiments of the present application. The following embodiments are used to illustrate the present application, but are not used to limit the scope of the present application.

[0041] In the heat exchange process of gravity heat pipe, low pressure and low boiling point are required, and the low boiling point is conducive to phase change nucleate boiling heat exchange of the coolant.

[0042] Conventional gravity heat pipe heat exchange usually occurs in the evaporation section, insulation section, and condensation section; the heat pipe heat exchange efficiency and energy efficiency are high by utilizing structural characteristics such as pressure difference, gravity difference, and metal sponge in the inner layer of the heat pipe.

[0043] On the one hand, since gravity heat pipes generally have a symmetrical structure, the existence of an inclination angle is more conducive to the gravity reflux of the refrigerant, but it will destroy the symmetry of the internal flow and thus affect the heat transfer characteristics.

[0044] On the other hand, in the finite gravity heat pipe-liquid cooling box, single-phase natural convection, two-phase natural convection, liquid pool nucleate boiling, evaporation and condensation and other processes exist simultaneously. The gravity heat pipe cycle-heat conversion is unstable, and the heat exchange and temperature changes of the phase change system cannot be accurately controlled.

[0045] In practical applications, the filling rate = the volume of the charged refrigerant / the total volume of the gravity heat pipe. During the natural gravity phase change process, if the filling rate is too small, the pipe wall will heat up, the liquid pool will dry up, and the temperature and pressure will fluctuate greatly. If the filling rate is too large, it will easily cause the liquid-cooled phase change medium to enter the insulation section or even the condensation section, resulting in a decrease in the heat exchange effect. When the pressure change can be controlled, the degree to which the filling rate is affected will be reduced.

[0046] Based on this, the embodiment of the present application provides a temperature control device based on a gravity heat pipe. Figure 1 A schematic diagram of a temperature control device based on a gravity heat pipe provided in an embodiment of the present application; Figure 2 Another schematic diagram of a temperature control device based on a gravity heat pipe provided in an embodiment of the present application; Figure 3 The application scenario intention of a temperature control device based on a gravity heat pipe provided in the embodiment of the present application; the following can be combined with Figure 1 , Figure 2 and Figure 3 It is understood that the device 100 includes: a gravity heat pipe assembly 101 and a liquid cooling box 103 provided with a sensor assembly 102; one end of the liquid cooling box 103 is connected to one end of the gravity heat pipe assembly 101 through a first pipeline; the other end of the liquid cooling box 103 is connected to the other end of the gravity heat pipe assembly 101 through a second pipeline; an electronic expansion valve 104 is provided on the second pipeline; the electronic expansion valve 104 is connected to the sensor assembly 102;

[0047] The sensor component 102 is used to collect the temperature value in the liquid cooling box 103;

[0048] The electronic expansion valve 104 is used to control its own valve to open wider when the temperature value is greater than the temperature setting value, thereby increasing the flow rate between the gravity heat pipe assembly 101 and the liquid cooling box 103; and to control its own valve to open narrower when the temperature value is less than or equal to the temperature setting value, thereby reducing the flow rate between the gravity heat pipe assembly 101 and the liquid cooling box 103.

[0049] It should be noted that the gravity heat pipe assembly 101 can be any gravity heat pipe assembly, which is not limited here. As an example, the gravity heat pipe assembly 101 can include a fan and a gravity heat pipe. In practical applications, the gravity heat pipe can be referred to as a heat pipe.

[0050] The sensor component 102 can be determined according to actual conditions and is not limited here. As an example, the sensor component 102 can include a temperature sensor. The symbol of the temperature sensor can be recorded as T.

[0051] The liquid cooling box 103 can be determined according to actual conditions and is not limited here. As an example, the liquid cooling box 103 can be a two-phase immersion tank. In practical applications, the two-phase immersion tank can also be referred to as a phase change liquid cooling tank.

[0052] The electronic expansion valve 104 can be determined according to actual conditions and is not limited here. As an example, the electronic expansion valve 104 can be a thermal expansion valve.

[0053] The sensor assembly 102 may include a temperature sensor; collecting the temperature value in the liquid cooling box 103 may be understood as using the temperature sensor to collect the temperature value in the liquid cooling box 103 in real time.

[0054] When the temperature value is greater than the temperature setting value, the valve of the electronic expansion valve 104 is controlled to open wide, and the flow rate between the gravity heat pipe assembly 101 and the liquid cooling box 103 is increased. It can be understood that when the temperature value is greater than the temperature setting value, the valve of the electronic expansion valve 104 is controlled to open wide, and the flow rate between the gravity heat pipe assembly 101 and the liquid cooling box 103 is increased. Among them, the temperature setting value can be determined according to actual conditions and is not limited here. In practical applications, the temperature setting value can be referred to as the setting value. As an example, when the electronic expansion valve 104 is a thermal expansion valve, when the temperature value is greater than the temperature setting value, the valve of the electronic expansion valve 104 is controlled to open wide, and the flow rate between the gravity heat pipe assembly 101 and the liquid cooling box 103 can be controlled to open wide when the temperature value is greater than the temperature setting value, and the flow rate between the gravity heat pipe assembly 101 and the liquid cooling box 103 is increased. In practical applications, when the temperature value collected by the temperature sensor is greater than the setting value, the thermal expansion valve automatically adjusts a larger flow rate.

[0055] When the temperature value is less than or equal to the temperature setting value, controlling the valve opening of the electronic expansion valve 104 to reduce the flow rate between the gravity heat pipe assembly 101 and the liquid cooling box 103 can be understood as when the temperature value is less than or equal to the temperature setting value, controlling the valve opening of the electronic expansion valve 104 to reduce the flow rate between the gravity heat pipe assembly 101 and the liquid cooling box 103. Among them, the temperature setting value can be determined according to actual conditions and is not limited here. In practical applications, the temperature setting value can be referred to as the setting value. As an example, when the electronic expansion valve 104 is a thermal expansion valve, when the temperature value is less than or equal to the temperature setting value, controlling the valve opening of the electronic expansion valve 104 to reduce the flow rate between the gravity heat pipe assembly 101 and the liquid cooling box 103 can be when the temperature value is less than or equal to the temperature setting value, controlling the valve opening of the thermal expansion valve to reduce the flow rate between the gravity heat pipe assembly 101 and the liquid cooling box 103. In practical applications, when the temperature value collected by the temperature sensor is less than or equal to the set value, the thermal expansion valve automatically adjusts to a smaller flow rate.

[0056] In practical applications, as an example, if the collected temperature value is greater than the set value, the thermal expansion valve automatically adjusts a larger flow rate, and if the collected temperature value is less than the set value, the thermal expansion valve automatically adjusts a smaller flow rate, thereby controlling the phase change liquid cooler through a simple control system.

[0057] In the embodiment of the present application, the temperature value in the liquid cooling box is collected by the temperature sensor. When the temperature value is greater than the temperature setting value, the valve of the thermal expansion valve is controlled to open wider to automatically adjust a larger flow rate; when the temperature value is less than or equal to the temperature setting value, the valve of the thermal expansion valve is controlled to open narrower to automatically adjust a smaller flow rate. That is, the temperature in the heat exchange of the phase change system is precisely controlled.

[0058] In an optional embodiment of the present application, a liquid storage unit 105 is provided between the gravity heat pipe assembly 101 and the electronic expansion valve 104;

[0059] The liquid storage unit 105 is used to store the cooling medium flowing out of the gravity heat pipe assembly 101 to achieve heat exchange during the condensation process of the gravity heat pipe assembly 101 and / or the heat exchange of the liquid cooling box 103 during the evaporation process.

[0060] It should be noted that the liquid storage unit 105 can be determined according to actual conditions and is not limited here.

[0061] The liquid storage unit 105 is used to store the cooling medium flowing out of the gravity heat pipe assembly 101 to achieve heat exchange of the gravity heat pipe assembly 101 during the condensation process and / or the liquid cooling box 103 during the evaporation process. It can be understood that the liquid storage unit 105 storing the cooling medium flowing out of the gravity heat pipe assembly 101 can achieve heat exchange of the gravity heat pipe assembly 101 during the condensation process; or, the liquid storage unit 105 storing the cooling medium flowing out of the gravity heat pipe assembly 101 can achieve heat exchange of the liquid cooling box 103 during the evaporation process; or, the liquid storage unit 105 storing the cooling medium flowing out of the gravity heat pipe assembly 101 can achieve heat exchange of the gravity heat pipe assembly 101 during the condensation process and the liquid cooling box 103 during the evaporation process.

[0062] In practical applications, as an example, when the temperature control device based on gravity heat pipe cools a large volume of working fluid during the phase change process, a liquid storage unit may be placed in front of the thermal expansion valve. The setting of the liquid storage unit is more conducive to sufficient heat exchange of the cooling working fluid during the evaporation and condensation process to achieve appropriate subcooling and superheating.

[0063] In an optional embodiment of the present application, the device 100 further includes a control component 106; the gravity heat pipe component 101 includes a fan 1011 and a gravity heat pipe 1012; the fan 1011 is located on the gravity heat pipe 1012; the sensor component 102 includes a temperature sensor 1021; the control component 106 is connected to the fan 1011 and the temperature sensor 1021 respectively; the diameter of the first pipeline and the diameter of the second pipeline are N:1, and N is an integer greater than or equal to 2;

[0064] The control component 106 is used to control the working frequency of the fan 1011 to remain unchanged and control the temperature sensor 1021 to collect the temperature value in the liquid cooling box 103.

[0065] It should be noted that the control component 106 can be determined according to actual conditions and is not limited here. As an example, the control component 106 can include a controller. In actual applications, the controller can be a centralized procurement controller.

[0066] The gravity heat pipe assembly 101 includes a fan 1011 and a gravity heat pipe 1012 ; in practical applications, the gravity heat pipe 1012 may be referred to as a heat pipe.

[0067] The sensor assembly 102 includes a temperature sensor 1021 ; in practical applications, the symbol of the temperature sensor 1021 may be denoted by T.

[0068] The control component 106 is connected to the fan 1011 and the temperature sensor 1021 respectively; the connection can be determined according to actual conditions and is not limited here. As an example, the connection can be a wired connection or a wireless connection; wherein the wired connection can be a wire connection capable of transmitting data; the wireless connection can be a short-range communication technology, such as Bluetooth, Zigbee, etc.; or a long-range communication technology, such as (WiFi, Wireless Fidelity) connection.

[0069] The diameter of the first pipeline and the diameter of the second pipeline are N:1, and N is an integer greater than or equal to 2, which can be understood as the diameter of the first pipeline is larger than the diameter of the second pipeline. The diameter of the first pipeline can be understood as a large diameter; the diameter of the second pipeline can be understood as a small diameter; in practical applications, a pipeline design mode of large diameter air intake and small diameter liquid outlet can be adopted.

[0070] The controlling the frequency of the fan 1011 to remain unchanged can be understood as controlling the fan 1011 to operate at a fixed frequency, which can be referred to as a fixed-frequency fan.

[0071] Controlling the temperature sensor 1021 to collect the temperature value in the liquid cooling box 103 can be understood as controlling the temperature sensor 1021 to collect the temperature value in the liquid cooling box 103 in real time.

[0072] In practical applications, as an example, a pipeline design mode of large-diameter air inlet and small-diameter liquid outlet is adopted to ensure that sufficient gas enters the heat pipe heat exchanger as much as possible. When the fan is a fixed-frequency fan (to reduce costs), the collected temperature value is greater than the set value, and the thermal expansion valve automatically adjusts a larger flow rate. When the collected temperature value is less than the set value, the thermal expansion valve automatically adjusts a smaller flow rate, thereby controlling the phase change liquid refrigerator through a simple control system. When the volume of the cooling medium in the phase change system is large, a liquid storage unit can be placed in front of the thermal expansion valve. The setting of the liquid storage unit is more conducive to sufficient heat exchange of the cooling medium during the evaporation and condensation process to achieve appropriate subcooling and superheating.

[0073] In an optional embodiment of the present application, the device 100 includes a control component 106; the gravity heat pipe component 101 includes a fan 1011 and a gravity heat pipe 1012; the fan 1011 is located on the gravity heat pipe 1012; the control component 106 is connected to the fan 1011;

[0074] The control component 106 is also used to obtain the coefficient of change of the temperature in the liquid cooling box 103, and determine the range of the temperature setting value based on the coefficient of change of the temperature; when the temperature value is within the range of the temperature setting value, the frequency of the fan 1011 is controlled to remain unchanged; when the temperature value is not within the range of the temperature setting value, the frequency of the fan 1011 is controlled to change.

[0075] It should be noted that the control component 106 can be determined according to actual conditions and is not limited here. As an example, the control component 106 can include a controller. In actual applications, the controller can be a centralized procurement controller.

[0076] The control component 106 is connected to the fan 1011; the connection can be determined according to actual conditions and is not limited here. As an example, the connection can be a wired connection or a wireless connection; wherein the wired connection can be a wire connection capable of transmitting data; the wireless connection can be a short-range communication technology, such as Bluetooth, Zigbee, etc.; or a long-range communication technology, such as WiFi, Wireless Fidelity connection.

[0077] The variation coefficient of the temperature in the liquid cooling box 103 is obtained; wherein the variation coefficient of the temperature can be designed according to actual conditions and is not limited here. As an example, the variation coefficient of the temperature can be 5.0%.

[0078] The specific determination process in determining the range of the temperature setting value based on the temperature variation coefficient can be designed according to actual conditions and is not limited here. As an example, the range of the temperature setting value determined based on the temperature variation coefficient can be the range of the temperature setting value determined based on the temperature variation coefficient and the lower limit and upper limit of the temperature. Specifically, the temperature variation coefficient can be multiplied by the lower limit of the temperature to determine the lower limit of the range of the temperature setting value, and the temperature variation coefficient can be multiplied by the upper limit of the temperature to determine the upper limit of the range of the temperature setting value. In practical applications, the temperature variation coefficient can be referred to as the temperature variation coefficient; the range of the temperature setting value can be referred to as the temperature setting range or setting value. As an example, a temperature variation coefficient of 5.0% is designed to determine the temperature value setting range or setting value.

[0079] When the temperature value is within the range of the temperature setting value, controlling the frequency of the fan 1011 to remain unchanged can be understood as controlling the fan 1011 to keep the frequency unchanged when the temperature value is within the range of the temperature setting value. In practical applications, as an example, when the actual temperature value is within the set range or the set value ±5%, the frequency is kept unchanged.

[0080] When the temperature value is not within the range of the temperature setting value, the frequency of controlling the fan 1011 to work changes can be understood as when the temperature value is not within the range of the temperature setting value, controlling the frequency of the fan 1011 to work increases or decreases. In practical applications, the frequency increase can be referred to as frequency increase, and the frequency decrease can be referred to as frequency reduction or frequency reduction. As an example, when the actual temperature value is not within the set range or the set value ±5%, the fan 1011 is controlled to make a corresponding frequency increase or frequency reduction.

[0081] In practical applications, a temperature variation coefficient of 5.0% can be designed to determine the temperature setting range or setting value. The temperature change measurement value has a delay. When the actual temperature value is within the setting range or the setting value ±5%, the frequency remains unchanged, otherwise the corresponding frequency increase or decrease is made.

[0082] In an optional embodiment of the present application, the control component 106 is also used to delay the second preset time to control the change in the operating frequency of the fan 1011 when the operating frequency of the fan 1011 changes multiple times within the first preset time.

[0083] In this embodiment, the first preset time can be determined according to actual conditions and is not limited here. If the frequency of the fan 1011 changes multiple times within the first preset time, it can be understood that the frequency of the fan 1011 changes frequently within the first preset time.

[0084] The second preset time can be determined according to actual conditions and is not limited here. As an example, the second preset time can be 30 seconds.

[0085] In practical applications, as an example, when the fan frequency is frequent, the time for the temperature feedback value to trigger the next fan change can be delayed by +30s.

[0086] In an optional embodiment of the present application, a gas circulation pump is provided on the first pipeline; the electronic expansion valve 104 includes a thermal expansion valve or an electric two-way valve; the control component 106 is connected to the gas circulation pump;

[0087] The control component 106 is also used to control the operation of the gas circulation pump to increase the flow rate of the gas in the liquid cooling box 103 entering the gravity heat pipe assembly 101; and to control the thermal expansion valve or the electric two-way valve to increase the flow rate between the gravity heat pipe assembly 101 and the liquid cooling box 103.

[0088] In this embodiment, a gas circulation pump is arranged on the first pipeline; the gas circulation pump can be determined according to actual conditions and is not limited here. As an example, the gas circulation pump can be understood as a small gas circulation pump.

[0089] The control component 106 is connected to the gas circulation pump; the connection can be determined according to actual conditions and is not limited here. As an example, the connection can be a wired connection or a wireless connection; wherein the wired connection can be a wire connection capable of transmitting data; the wireless connection can be a short-range communication technology, such as Bluetooth, Zigbee, etc.; or a long-range communication technology, such as WiFi, Wireless Fidelity connection.

[0090] In this embodiment, based on the temperature control mode, considering that the fan changes frequently and the motor is easily damaged, a small gas circulation pump can be added to increase the flow, and a thermal expansion valve or an electric two-way valve can be added to throttle, so as to improve the temperature control stability and reduce the energy consumption of the fan.

[0091] For ease of understanding, the temperature control device based on the gravity heat pipe is exemplified here as a temperature control device for optimizing the gravity heat pipe phase change liquid cooling box. Figure 3Understand. In the temperature control mode, a large-diameter air inlet and small-diameter liquid outlet pipeline design mode is adopted to ensure that sufficient gas enters the heat pipe heat exchanger as much as possible. When the fan is a fixed-frequency fan (to reduce costs), the collected temperature value is greater than the set value, and the thermal expansion valve automatically adjusts a larger flow rate. When the collected temperature value is less than the set value, the thermal expansion valve automatically adjusts a smaller flow rate, so that the phase change liquid refrigerator can be controlled through a simple control system. When the volume of the cooling medium in the phase change system is large, a liquid storage unit can be placed in front of the thermal expansion valve. The setting of the liquid storage unit is more conducive to sufficient heat exchange of the cooling medium during the evaporation and condensation process to achieve appropriate subcooling and superheating. Use variable frequency fan: design a 5.0% temperature variation coefficient, determine the temperature setting range or set value, the temperature change measurement value has a delay, when the actual temperature value is within the set range or the set value ±5%, keep the frequency unchanged, otherwise make a corresponding increase or decrease in frequency, when the fan frequency is more frequent, the time for the temperature feedback value to trigger the next fan change can be delayed by +30s; based on the condition of temperature mode variable frequency fan, considering that the fan changes frequently and the motor is easily damaged, a small gas circulation pump can be added to increase the flow, and a thermal expansion valve or an electric two-way valve can be added for throttling, so as to improve the stability of temperature control and reduce the energy consumption of the fan.

[0092] The pressure control device based on the gravity heat pipe provided in the embodiment of the present application collects the temperature value in the liquid cooling box through the temperature sensor. When the temperature value is greater than the temperature setting value, the valve of the thermal expansion valve is controlled to open wider to automatically adjust a larger flow rate; when the temperature value is less than or equal to the temperature setting value, the valve of the thermal expansion valve is controlled to open narrower to automatically adjust a smaller flow rate. That is, the temperature in the heat exchange of the phase change system is accurately controlled.

[0093] Based on the temperature control device 100 based on gravity heat pipe, the present application further provides a temperature control method based on gravity heat pipe, which is applied to the temperature control device 100 based on gravity heat pipe. Figure 4 FIG. 1 is a schematic diagram of a temperature control method based on a gravity heat pipe according to an embodiment of the present application. Figure 4 As shown, the method includes:

[0094] Step S401, collecting the temperature value in the liquid cooling box.

[0095] Step S402, when the temperature value is greater than the temperature setting value, control the valve of the electronic expansion valve to open wider, and increase the flow rate between the gravity heat pipe assembly and the liquid cooling box.

[0096] Step S403, when the temperature value is less than or equal to the temperature setting value, control the valve opening of the electronic expansion valve to be smaller, and reduce the flow rate between the gravity heat pipe assembly and the liquid cooling box.

[0097] It should be noted that the temperature control device 100 based on the gravity heat pipe is described above and will not be described again herein.

[0098] In step S401, collecting the temperature value in the liquid cooling box can be understood as collecting the temperature value in the liquid cooling box in real time.

[0099] In step S402, when the temperature value is greater than the temperature setting value, the electronic expansion valve is controlled to open wide, and the flow rate between the gravity heat pipe assembly and the liquid cooling box is increased. The temperature setting value can be determined according to actual conditions and is not limited here. In practical applications, the temperature setting value can be referred to as the setting value. As an example, when the electronic expansion valve is a thermal expansion valve, when the temperature value is greater than the temperature setting value, the electronic expansion valve is controlled to open wide, and the flow rate between the gravity heat pipe assembly and the liquid cooling box is increased. When the temperature value is greater than the temperature setting value, the thermal expansion valve is controlled to open wide, and the flow rate between the gravity heat pipe assembly and the liquid cooling box is increased. In practical applications, when the temperature value collected by the temperature sensor is greater than the setting value, the thermal expansion valve automatically adjusts a larger flow rate.

[0100] In step S403, when the temperature value is less than or equal to the temperature setting value, the electronic expansion valve is controlled to open smaller, and the flow rate between the gravity heat pipe assembly and the liquid cooling box is reduced. The temperature setting value can be determined according to actual conditions and is not limited here. In practical applications, the temperature setting value can be referred to as the setting value. As an example, when the electronic expansion valve is a thermal expansion valve, when the temperature value is less than or equal to the temperature setting value, the electronic expansion valve is controlled to open smaller, and the flow rate between the gravity heat pipe assembly and the liquid cooling box is reduced. When the temperature value is less than or equal to the temperature setting value, the thermal expansion valve is controlled to open smaller, and the flow rate between the gravity heat pipe assembly and the liquid cooling box is reduced. In practical applications, when the temperature value collected by the temperature sensor is less than or equal to the setting value, the thermal expansion valve automatically adjusts to a smaller flow rate.

[0101] In practical applications, as an example, if the collected temperature value is greater than the set value, the thermal expansion valve automatically adjusts a larger flow rate, and if the collected temperature value is less than the set value, the thermal expansion valve automatically adjusts a smaller flow rate, thereby controlling the phase change liquid cooler through a simple control system.

[0102] In the embodiment of the present application, by collecting the temperature value in the liquid cooling box, when the temperature value is greater than the temperature setting value, the valve of the thermal expansion valve is controlled to open wider, and a larger flow rate is automatically adjusted; when the temperature value is less than or equal to the temperature setting value, the valve of the thermal expansion valve is controlled to open narrower, and a smaller flow rate is automatically adjusted. That is, the temperature in the heat exchange of the phase change system is accurately controlled.

[0103] In an optional embodiment of the present application, the method further includes:

[0104] The cooling medium flowing out of the gravity heat pipe assembly is stored to achieve heat exchange during the condensation process of the gravity heat pipe assembly and / or during the evaporation process of the liquid cooling box.

[0105] It should be noted that storing the cooling medium flowing out of the gravity heat pipe assembly to achieve heat exchange of the gravity heat pipe assembly during the condensation process and / or the liquid cooling box during the evaporation process can be understood as storing the cooling medium flowing out of the gravity heat pipe assembly to achieve heat exchange of the gravity heat pipe assembly during the condensation process; or, storing the cooling medium flowing out of the gravity heat pipe assembly to achieve heat exchange of the liquid cooling box during the evaporation process; or, storing the cooling medium flowing out of the gravity heat pipe assembly to achieve heat exchange of the gravity heat pipe assembly during the condensation process and of the liquid cooling box during the evaporation process.

[0106] In practical applications, as an example, when the temperature control device based on gravity heat pipe cools a large volume of working fluid during the phase change process, a liquid storage unit may be placed in front of the thermal expansion valve. The setting of the liquid storage unit is more conducive to sufficient heat exchange of the cooling working fluid during the evaporation and condensation process to achieve appropriate subcooling and superheating.

[0107] In an optional embodiment of the present application, the method further includes:

[0108] The frequency of the fan operation is controlled to remain unchanged and the temperature sensor is controlled to collect the temperature value in the liquid cooling box.

[0109] It should be noted that the controlling the working frequency of the fan to remain unchanged can be understood as controlling the fan to work at a fixed frequency, which can be referred to as a fixed frequency fan.

[0110] Controlling the temperature sensor to collect the temperature value in the liquid cooling box can be understood as controlling the temperature sensor to collect the temperature value in the liquid cooling box in real time.

[0111] In practical applications, as an example, a pipeline design mode of large-diameter air inlet and small-diameter liquid outlet is adopted to ensure that sufficient gas enters the heat pipe heat exchanger as much as possible. When the fan is a fixed-frequency fan (to reduce costs), the collected temperature value is greater than the set value, and the thermal expansion valve automatically adjusts a larger flow rate. When the collected temperature value is less than the set value, the thermal expansion valve automatically adjusts a smaller flow rate, thereby controlling the phase change liquid refrigerator through a simple control system. When the volume of the cooling medium in the phase change system is large, a liquid storage unit can be placed in front of the thermal expansion valve. The setting of the liquid storage unit is more conducive to sufficient heat exchange of the cooling medium during the evaporation and condensation process to achieve appropriate subcooling and superheating.

[0112] In an optional embodiment of the present application, the method further includes:

[0113] Obtaining a coefficient of variation of the temperature in the liquid cooling box;

[0114] determining a range of the temperature setting value based on a coefficient of variation of the temperature;

[0115] When the temperature value is within the range of the temperature setting value, the frequency of controlling the fan to work remains unchanged;

[0116] When the temperature value is not within the range of the temperature setting value, the frequency of controlling the operation of the fan is changed.

[0117] It should be noted that the variation coefficient of the temperature in the liquid cooling box is obtained; wherein the variation coefficient of the temperature can be designed according to actual conditions and is not limited here. As an example, the variation coefficient of the temperature can be 5.0%.

[0118] The specific determination process in determining the range of the temperature setting value based on the temperature variation coefficient can be designed according to actual conditions and is not limited here. As an example, the range of the temperature setting value determined based on the temperature variation coefficient can be the range of the temperature setting value determined based on the temperature variation coefficient and the lower limit and upper limit of the temperature. Specifically, the temperature variation coefficient can be multiplied by the lower limit of the temperature to determine the lower limit of the range of the temperature setting value, and the temperature variation coefficient can be multiplied by the upper limit of the temperature to determine the upper limit of the range of the temperature setting value. In practical applications, the temperature variation coefficient can be referred to as the temperature variation coefficient; the range of the temperature setting value can be referred to as the temperature setting range or setting value. As an example, a temperature variation coefficient of 5.0% is designed to determine the temperature value setting range or setting value.

[0119] When the temperature value is within the range of the temperature setting value, controlling the frequency of the fan to remain unchanged can be understood as controlling the fan to keep the frequency unchanged when the temperature value is within the range of the temperature setting value. In practical applications, as an example, when the actual temperature value is within the set range or the set value ±5%, the frequency is kept unchanged.

[0120] When the temperature value is not within the range of the temperature setting value, the frequency of controlling the fan to work changes can be understood as when the temperature value is not within the range of the temperature setting value, the frequency of controlling the fan to work increases or decreases. In practical applications, the frequency increase can be referred to as frequency increase, and the frequency decrease can be referred to as frequency reduction or frequency reduction. As an example, when the actual temperature value is not within the set range or the set value ±5%, the fan is controlled to increase or decrease the frequency accordingly.

[0121] In practical applications, a temperature variation coefficient of 5.0% can be designed to determine the temperature setting range or setting value. The temperature change measurement value has a delay. When the actual temperature value is within the setting range or the setting value ±5%, the frequency remains unchanged, otherwise the corresponding frequency increase or decrease is made.

[0122] In an optional embodiment of the present application, when the operating frequency of the fan changes, the method further includes:

[0123] If the frequency of the fan operation changes multiple times within the first preset time, the frequency of the fan operation is controlled to change after a delay of a second preset time.

[0124] It should be noted that the first preset time can be determined according to actual conditions and is not limited here. If the frequency of the fan operation changes multiple times within the first preset time, it can be understood that the frequency of the fan operation changes frequently within the first preset time.

[0125] The second preset time can be determined according to actual conditions and is not limited here. As an example, the second preset time can be 30 seconds.

[0126] In practical applications, as an example, when the fan frequency is frequent, the time for the temperature feedback value to trigger the next fan change can be delayed by +30s.

[0127] The detailed process of the temperature control method based on the gravity heat pipe of the present application can be understood in conjunction with the above-mentioned temperature control device based on the gravity heat pipe, and will not be repeated here.

[0128] An embodiment of the present invention further provides a liquid cooling data center, which includes any of the above-mentioned devices.

[0129] An embodiment of the present invention further provides a computer program product, including a computer program, and when the computer program is executed by a processor, the steps of the above method embodiment are implemented.

[0130] An embodiment of the present application also provides a computer-readable medium having a computer program stored thereon. When the computer program is executed by a processor, the steps of the above-mentioned method embodiment are implemented. The aforementioned storage medium includes: a mobile storage device, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, and other media that can store program codes.

[0131] If the method steps in the above-mentioned system of the embodiment of the present application are implemented in the form of software function modules and sold or used as independent products, they can also be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the embodiment of the present application can essentially or in other words, the part that contributes to the prior art can be embodied in the form of a software product, and the computer software product is stored in a storage medium. The aforementioned storage medium includes: various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a magnetic disk or an optical disk. In this way, the embodiment of the present application is not limited to any specific combination of hardware and software.

[0132] A person skilled in the art can understand that: all or part of the steps of implementing the above method embodiment can be completed by hardware related to program instructions, and the aforementioned program can be stored in a computer-readable storage medium. When the program is executed, it executes the steps of the above method embodiment; and the aforementioned storage medium includes: mobile storage devices, read-only memories (ROM, Read-Only Memory), random access memories (RAM, Random Access Memory), disks or optical disks, etc. Various media that can store program codes.

[0133] The method disclosed in the above-mentioned embodiment of the present application can be applied to a processor or implemented by a processor. The processor may be an integrated circuit chip with signal processing capabilities. In combination with the steps of the method disclosed in the embodiment of the present application, it can be directly embodied as a hardware decoding processor to be executed, or a combination of hardware and software modules in the decoding processor to be executed. The software module can be located in a storage medium, which is located in a memory, and the processor reads the information in the memory and completes the steps of the aforementioned method in combination with its hardware.

[0134] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A temperature control device based on a gravity heat pipe, characterized in that: The device comprises: a gravity heat pipe assembly and a liquid cooling box provided with a sensor assembly; one end of the liquid cooling box is connected to one end of the gravity heat pipe assembly through a first pipeline; the other end of the liquid cooling box is connected to the other end of the gravity heat pipe assembly through a second pipeline; an electronic expansion valve is provided on the second pipeline; the electronic expansion valve is connected to the sensor assembly; The sensor assembly is used to collect the temperature value in the liquid cooling box; The electronic expansion valve is used to control its own valve to open wider when the temperature value is greater than the temperature setting value, thereby increasing the flow rate between the gravity heat pipe assembly and the liquid cooling box; and to control its own valve to open narrower when the temperature value is less than or equal to the temperature setting value, thereby reducing the flow rate between the gravity heat pipe assembly and the liquid cooling box.

2. The device according to claim 1, characterized in that A liquid storage unit is provided between the gravity heat pipe assembly and the electronic expansion valve; The liquid storage unit is used to store the cooling medium flowing out of the gravity heat pipe assembly to achieve heat exchange during the condensation process of the gravity heat pipe assembly and / or the evaporation process of the liquid cooling box.

3. The device according to claim 1, characterized in that The device further includes a control component; the gravity heat pipe component includes a fan and a gravity heat pipe; the fan is located on the gravity heat pipe; the sensor component includes a temperature sensor; the control component is connected to the fan and the temperature sensor respectively; the diameter of the first pipeline and the diameter of the second pipeline are N:1, where N is an integer greater than or equal to 2; The control component is used to control the working frequency of the fan to remain unchanged and to control the temperature sensor to collect the temperature value in the liquid cooling box.

4. The device according to claim 1, characterized in that The device includes a control component; the gravity heat pipe component includes a fan and a gravity heat pipe; the fan is located on the gravity heat pipe; the control component is connected to the fan; The control component is also used to obtain the coefficient of variation of the temperature in the liquid cooling box, and determine the range of the temperature setting value based on the coefficient of variation of the temperature; when the temperature value is within the range of the temperature setting value, the frequency of controlling the fan to operate remains unchanged; when the temperature value is not within the range of the temperature setting value, the frequency of controlling the fan to operate changes.

5. The device according to claim 4, characterized in that The control component is also used for delaying the second preset time to control the change in the operating frequency of the fan when the operating frequency of the fan changes multiple times within the first preset time.

6. The device according to claim 5, characterized in that A gas circulation pump is arranged on the first pipeline; the electronic expansion valve comprises a thermal expansion valve or an electric two-way valve; the control component is connected to the gas circulation pump; The control component is also used to control the operation of the gas circulation pump to increase the flow rate of the gas in the liquid cooling box into the gravity heat pipe assembly; and to control the thermal expansion valve or the electric two-way valve to increase the flow rate between the gravity heat pipe assembly and the liquid cooling box.

7. A control method, characterized in that: The control device according to any one of claims 1 to 6; the method comprising: Collect the temperature value in the liquid cooling box; When the temperature value is greater than the temperature setting value, the valve of the electronic expansion valve is controlled to be opened wider, thereby increasing the flow rate between the gravity heat pipe assembly and the liquid cooling box; When the temperature value is less than or equal to the temperature setting value, the valve opening of the electronic expansion valve is controlled to be small, and the flow rate between the gravity heat pipe assembly and the liquid cooling box is reduced.

8. The method according to claim 7, characterized in that The method further comprises: The cooling medium flowing out of the gravity heat pipe assembly is stored to achieve heat exchange during the condensation process of the gravity heat pipe assembly and / or during the evaporation process of the liquid cooling box.

9. The method according to claim 7, characterized in that: The method further comprises: The frequency of the fan operation is controlled to remain unchanged and the temperature sensor is controlled to collect the temperature value in the liquid cooling box.

10. The method according to claim 7, characterized in that The method further comprises: Obtaining a coefficient of variation of the temperature in the liquid cooling box; determining a range of the temperature setting value based on a coefficient of variation of the temperature; When the temperature value is within the range of the temperature setting value, the frequency of controlling the fan to work remains unchanged; When the temperature value is not within the range of the temperature setting value, the frequency of controlling the operation of the fan is changed.

11. The method according to claim 10, characterized in that In the case where the operating frequency of the fan changes, the method further includes: If the frequency of the fan operation changes multiple times within the first preset time, the frequency of the fan operation is controlled to change after a delay of a second preset time.

12. A liquid cooling data center, characterized in that: The liquid-cooled data center comprises the device according to any one of claims 1-6.

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