Temperature control device, method and liquid-cooled data center based on gravity heat pipe

Abstract

The embodiment of the present application provides a temperature control device and method based on a gravity heat pipe and a liquid-cooled data center thereof, the device comprising: a gravity heat pipe assembly and a liquid-cooled box provided with a sensor assembly; one end of the liquid-cooled box is connected to one end of the gravity heat pipe assembly through a first pipeline; the other end of the liquid-cooled 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 for collecting a temperature value in the liquid-cooled box; the electronic expansion valve is used for controlling the valve to be opened wide to increase the flow capacity of the gravity heat pipe assembly and the liquid-cooled box when the temperature value is greater than a temperature setting value; and the electronic expansion valve is used for controlling the valve to be opened small to reduce the flow capacity of the gravity heat pipe assembly and the liquid-cooled box when the temperature value is less than or equal to the temperature setting value.

Description

Technical Field

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

[0002] Gravity heat pipe circulation leads to unstable heat transfer, making it impossible to precisely control the temperature of heat exchange in the phase change system; when the temperature is controllable, the degree to which the liquid filling rate is affected decreases. Currently, there is no effective solution to this problem. Summary of the Invention

[0003] To address the existing technical problems, this application provides a temperature control device, method, and liquid-cooled data center based on a gravity heat pipe.

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

[0005] This application provides a temperature control device based on a gravity heat pipe. The device includes: a gravity heat pipe assembly and a liquid-cooled box equipped with a sensor assembly; one end of the liquid-cooled box is connected to one end of the gravity heat pipe assembly via a first pipe; the other end of the liquid-cooled box is connected to the other end of the gravity heat pipe assembly via a second pipe; an electronic expansion valve is provided on the second pipe; the electronic expansion valve is connected to the sensor assembly.

[0006] The sensing component is used to collect the temperature value inside 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 set 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 set value, thereby decreasing the flow rate between the gravity heat pipe assembly and the liquid cooling box.

[0008] In the above scheme, 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 working fluid flowing out of the gravity heat pipe assembly, so as to realize heat exchange of the gravity heat pipe assembly during condensation and / or the liquid cooling box during evaporation.

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

[0011] The control component is used to control the fan to operate at a constant frequency and to control the temperature sensor to collect the temperature value inside the liquid cooling box.

[0012] In the above scheme, the device includes a control component; the gravity heat pipe assembly 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 further configured to acquire the temperature variation coefficient inside the liquid cooling box, determine the range of the temperature setpoint based on the temperature variation coefficient, control the frequency of the fan to remain constant when the temperature value is within the range of the temperature setpoint, and control the frequency of the fan to change when the temperature value is outside the range of the temperature setpoint.

[0014] In the above scheme, the control component is further configured to, if the frequency of the fan operation changes multiple times within a first preset time, delay the frequency of the fan operation for a second preset time to control the frequency of the fan operation to change.

[0015] In the above scheme, a gas circulation pump is installed on the first pipeline; the electronic expansion valve includes a thermostatic 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 gas in the liquid cooling box into the gravity heat pipe assembly; and to control the thermal expansion valve or electric two-way valve to increase the flow rate between the gravity heat pipe assembly and the liquid cooling box.

[0017] This application provides a temperature control method based on a gravity heat pipe, applied in the aforementioned temperature control device based on a gravity heat pipe; the method includes:

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

[0019] When the temperature value is greater than the set temperature value, the electronic expansion valve is opened wider to increase 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 set temperature value, the valve of the electronic expansion valve is opened slightly to reduce the flow rate between the gravity heat pipe assembly and the liquid cooling box.

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

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

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

[0024] The frequency of the control fan is kept constant, and the temperature sensor is controlled to collect the temperature value inside the liquid cooling box.

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

[0026] Obtain the coefficient of temperature change inside the liquid cooling box;

[0027] The range of the temperature setpoint is determined based on the temperature variation coefficient.

[0028] Within the range of the temperature setpoint, the frequency at which the fan operates remains constant.

[0029] When the temperature value is outside the range of the set temperature value, the frequency at which the fan operates changes.

[0030] In the above scheme, when the operating frequency of the wind turbine changes, the method further includes:

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

[0032] This invention also provides a liquid-cooled data center, which includes any of the devices described above.

[0033] This application also provides a computer program product, including a computer program that, when executed by a processor, implements any step of the method described above.

[0034] This application also provides a storage medium having a computer program stored thereon, which, when executed by a processor, implements any step of the method described above.

[0035] This application provides a temperature control device, method, and liquid-cooled data center based on a gravity heat pipe. The device includes: a gravity heat pipe assembly and a liquid-cooled box equipped with a sensor assembly; one end of the liquid-cooled box is connected to one end of the gravity heat pipe assembly via a first pipe; the other end of the liquid-cooled box is connected to the other end of the gravity heat pipe assembly via a second pipe; an electronic expansion valve is installed on the second pipe; the electronic expansion valve is connected to the sensor assembly; the sensor assembly is used to collect the temperature value inside the liquid-cooled box; the electronic expansion valve is used to control its own valve to open wider when the temperature value is greater than a set temperature value, thereby increasing the flow rate between the gravity heat pipe assembly and the liquid-cooled box; and to control its own valve to close narrowly when the temperature value is less than or equal to the set temperature value, thereby decreasing the flow rate between the gravity heat pipe assembly and the liquid-cooled box. The technical solution of this application embodiment collects the temperature value inside the liquid cooling box through a temperature sensor. When the temperature value is greater than the set temperature value, the valve of the thermal expansion valve is opened wider to automatically adjust to a larger flow rate; when the temperature value is less than or equal to the set temperature value, the valve of the thermal expansion valve is opened narrower to automatically adjust to a smaller flow rate. That is, the temperature in the heat exchange of the phase change system is precisely controlled. Attached Figure Description

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

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

[0038] Figure 3 This application provides an intended application scenario for a temperature control device based on a gravity heat pipe, as illustrated in the embodiments of this application.

[0039] Figure 4 This is a schematic diagram illustrating the implementation process of a temperature control method based on a gravity heat pipe according to an embodiment of this application. Detailed Implementation

[0040] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the specific technical solutions of the invention will be further described in detail below with reference to the accompanying drawings of the embodiments of this application. The following embodiments are used to illustrate this application, but are not intended to limit the scope of this application.

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

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

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

[0044] On the other hand, within a limited gravity heat pipe-liquid cooling box, processes such as single-phase natural convection, two-phase natural convection, nucleation boiling of the liquid pool, and evaporation and condensation exist simultaneously. The gravity heat pipe cycle-heat conversion is unstable, making it impossible to accurately control the heat exchange and temperature changes of the phase change system.

[0045] In practical applications, the liquid filling rate = volume of refrigerant charged / total volume of gravity heat pipe. During natural gravity phase change, if the liquid filling rate is too low, the pipe wall will heat up, the liquid pool will dry up, and the temperature and pressure will fluctuate greatly. If the liquid filling rate is too high, the liquid-cooled phase change working fluid may enter the insulation section or even the condensation section, resulting in a reduction in heat exchange efficiency. When the pressure change can be controlled, the degree to which the liquid filling rate is affected will be reduced.

[0046] Based on this, embodiments of this application provide 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 this application; Figure 2 Another schematic diagram of a temperature control device based on a gravity heat pipe provided in this application embodiment; Figure 3 This application provides an example of a temperature control device based on a gravity heat pipe, illustrating an intended application scenario. The following can be combined with... Figure 1 , Figure 2 and Figure 3 To understand the device 100, it includes: a gravity heat pipe assembly 101 and a liquid-cooled box 103 equipped with a sensor assembly 102; one end of the liquid-cooled box 103 is connected to one end of the gravity heat pipe assembly 101 via a first pipe; the other end of the liquid-cooled box 103 is connected to the other end of the gravity heat pipe assembly 101 via a second pipe; an electronic expansion valve 104 is provided on the second pipe; the electronic expansion valve 104 is connected to the sensor assembly 102.

[0047] The sensing component 102 is used to collect the temperature value inside 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 set 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 set value, thereby decreasing 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, and no limitation is made here. As an example, the gravity heat pipe assembly 101 may include a fan and a gravity heat pipe. In practical applications, the gravity heat pipe may be simply referred to as a heat pipe.

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

[0051] The liquid cooling tank 103 can be determined according to the actual situation and is not limited here. As an example, the liquid cooling tank 103 can be a two-phase immersion tank. In practical applications, the two-phase immersion tank can also be simply 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 thermostatic expansion valve.

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

[0054] When the temperature value exceeds the set temperature value, controlling the opening of its own valve to increase the flow rate between the gravity heat pipe assembly 101 and the liquid cooling box 103 can be understood as controlling the opening of the electronic expansion valve 104 to increase the flow rate between the gravity heat pipe assembly 101 and the liquid cooling box 103 when the temperature value exceeds the set temperature value. The set temperature value can be determined according to actual conditions and is not limited here. In practical applications, the set temperature value can be simply referred to as the set value. As an example, when the electronic expansion valve 104 is a thermostatic expansion valve, controlling the opening of the electronic expansion valve 104 to increase the flow rate between the gravity heat pipe assembly 101 and the liquid cooling box 103 when the temperature value exceeds the set temperature value can be understood as controlling the opening of the thermostatic expansion valve to increase the flow rate between the gravity heat pipe assembly 101 and the liquid cooling box 103 when the temperature value exceeds the set temperature value. In practical applications, when the temperature value collected by the temperature sensor exceeds the set value, the thermostatic expansion valve automatically adjusts to a larger flow rate.

[0055] When the temperature value is less than or equal to the set temperature value, controlling the opening of its own valve to reduce the flow rate between the gravity heat pipe assembly 101 and the liquid cooling box 103 can be understood as controlling the 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 when the temperature value is less than or equal to the set temperature value. The set temperature value can be determined according to actual conditions and is not limited here. In practical applications, the set temperature value can be simply referred to as the set value. As an example, when the electronic expansion valve 104 is a thermostatic expansion valve, controlling the 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 when the temperature value is less than or equal to the set temperature value can be understood as controlling the opening of the thermostatic expansion valve to reduce the flow rate between the gravity heat pipe assembly 101 and the liquid cooling box 103 when the temperature value is less than or equal to the set temperature value. 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 to a larger flow rate; if the collected temperature value is less than the set value, the thermal expansion valve automatically adjusts to a smaller flow rate. Thus, the phase change liquid cooler can be controlled through a simple control system.

[0057] In this embodiment, a temperature sensor collects the temperature value inside the liquid cooling box. When the temperature value is greater than the set temperature value, the valve of the thermal expansion valve is opened wider to automatically adjust to a larger flow rate; when the temperature value is less than or equal to the set temperature value, the valve of the thermal expansion valve is opened narrower to automatically adjust to a smaller flow rate. This precisely controls the temperature during heat exchange in the phase change system.

[0058] In one optional embodiment of this 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 working fluid flowing out of the gravity heat pipe assembly 101, so as to realize the heat exchange of the gravity heat pipe assembly 101 during the condensation process and / or 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 the actual situation, 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, so as to realize the heat exchange of the gravity heat pipe assembly 101 during the condensation process and / or the liquid cooling box 103 during the evaporation process. This can be understood as the liquid storage unit 105 storing the cooling medium flowing out of the gravity heat pipe assembly 101 can realize the 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 realize the 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 realize the 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 volume of the cooling working fluid is large during the phase change process, a liquid storage unit can be placed before the thermal expansion valve in the temperature control device based on the gravity heat pipe. The liquid storage unit is more conducive to the full heat exchange of the cooling working fluid during the evaporation and condensation process, so as to achieve appropriate subcooling and superheat.

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

[0064] The control component 106 is used to control the fan 1011 to operate at a constant frequency and to control the temperature sensor 1021 to collect the temperature value inside 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 may include a controller. In practical applications, the controller may 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 can be simply referred to as a heat pipe.

[0067] The sensing component 102 includes a temperature sensor 1021; in practical applications, the temperature sensor 1021 can be denoted as 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 the actual situation 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 use short-range communication technology, such as Bluetooth, Zigbee, etc.; or it can use long-range communication technology, such as WiFi (Wireless Fidelity) connection.

[0069] The diameter of the first pipeline is N:1 with the diameter of the second pipeline, where N is an integer greater than or equal to 2. This can be understood as the diameter of the first pipeline being larger than the diameter of the second pipeline. The diameter of the first pipeline can be understood as a larger diameter, and the diameter of the second pipeline as a smaller diameter. In practical applications, a pipeline design with a larger diameter for air intake and a smaller diameter for liquid outlet can be adopted.

[0070] The statement that the frequency at which the fan 1011 is controlled remains constant 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] The control of the temperature sensor 1021 to collect the temperature value inside the liquid cooling box 103 can be understood as controlling the temperature sensor 1021 to collect the temperature value inside the liquid cooling box 103 in real time.

[0072] In practical applications, as an example, a pipeline design with a large-diameter inlet and a small-diameter outlet is adopted to ensure sufficient gas enters the heat pipe heat exchanger. When the fan is a fixed-frequency fan (to reduce costs), if the collected temperature value is greater than the set value, the thermal expansion valve automatically adjusts to a larger flow rate; if the collected temperature value is less than the set value, the thermal expansion valve automatically adjusts to a smaller flow rate. Thus, the phase change liquid cooler is 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 before the thermal expansion valve. The liquid storage unit is designed to facilitate sufficient heat exchange of the cooling medium during evaporation and condensation to achieve appropriate subcooling and superheat.

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

[0074] The control component 106 is further configured to acquire the temperature change coefficient inside the liquid cooling box 103, determine the range of the temperature setpoint based on the temperature change coefficient, control the frequency of the fan 1011 to remain constant when the temperature value is within the range of the temperature setpoint, and control the frequency of the fan 1011 to change when the temperature value is outside the range of the temperature setpoint.

[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 may include a controller. In practical applications, the controller may be a centralized procurement controller.

[0076] The control component 106 is connected to the fan 1011; this 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 use short-range communication technology, such as Bluetooth, Zigbee, etc.; or it can use long-range communication technology, such as WiFi, Wireless Fidelity connection.

[0077] The step involves obtaining the temperature variation coefficient within the liquid cooling tank 103; wherein, the temperature variation coefficient can be designed according to actual conditions and is not limited here. As an example, the temperature variation coefficient can be 5.0%.

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

[0079] The phrase "controlling the fan 1011 to maintain a constant operating frequency within the temperature setpoint range" can be understood as maintaining a constant frequency for the fan 1011 within the temperature setpoint range. In practical applications, as an example, when the actual temperature value is within the set range or ±5% of the setpoint, the frequency remains constant.

[0080] When the temperature value is outside the set temperature range, changing the operating frequency of the fan 1011 can be understood as increasing or decreasing the operating frequency of the fan 1011 when the temperature value is outside the set temperature range. In practical applications, increasing the frequency can be simply referred to as frequency boosting, and decreasing the frequency can be simply referred to as frequency reduction or frequency decreasing. As an example, when the actual temperature value is outside the set range or within ±5% of the set value, the fan 1011 is controlled to perform corresponding frequency boosting or frequency reduction.

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

[0082] In an optional embodiment of this application, the control component 106 is further configured to, if the frequency of operation of the fan 1011 changes multiple times within a first preset time, delay the change of the frequency of operation of the fan by a second preset time.

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

[0084] The second preset time can be determined according to the actual situation, 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 relatively high, the time for the temperature feedback value to trigger the next fan change can be delayed by +30 seconds.

[0086] In one optional embodiment of this application, a gas circulation pump is provided on the first pipeline; the electronic expansion valve 104 includes a thermostatic 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 gas in the liquid cooling box 103 into the gravity heat pipe assembly 101; and to control the thermal expansion valve or 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 installed on the first pipeline; the gas circulation pump can be determined according to the actual situation 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; this 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 use short-range communication technology, such as Bluetooth, Zigbee, etc.; or it can use long-range communication technology, such as WiFi, Wireless Fidelity connection.

[0090] In this embodiment, under the condition of temperature control mode, considering that the fan changes frequently and is prone to motor damage, a small gas circulation pump can be added to increase the flow, and a thermal expansion valve or electric two-way valve can be used for throttling to improve the stability of temperature control and reduce the energy consumption of the fan.

[0091] For ease of understanding, the example here is a temperature control device based on a gravity heat pipe, specifically an optimized temperature control device for a gravity heat pipe phase change liquid cooler. This can be combined with... Figure 3To understand this, in temperature control mode, a large-diameter inlet and small-diameter outlet pipe design is used to ensure sufficient gas enters the heat pipe heat exchanger. When the fan is a fixed-frequency fan (to reduce costs), if the collected temperature value is greater than the set value, the thermal expansion valve automatically adjusts to a larger flow rate; if the collected temperature value is less than the set value, the thermal expansion valve automatically adjusts to a smaller flow rate. Thus, the phase change liquid cooler is 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 before the thermal expansion valve. The liquid storage unit is designed to facilitate sufficient heat exchange of the cooling medium during evaporation and condensation, thereby achieving appropriate subcooling and superheat. Using a variable frequency fan: Designed with a 5.0% temperature variation coefficient, the temperature setting range or set value is determined. The temperature change measurement value has a delay. When the actual temperature value is within the set range or ±5% of the set value, the frequency remains unchanged; otherwise, the frequency is increased or decreased accordingly. When the fan frequency is frequent, the time for the temperature feedback value to trigger the next fan change can be delayed by +30 seconds. Under the condition of a temperature-mode variable frequency fan, considering that the fan changes frequently and is prone to motor damage, a small gas circulation pump can be added for flow increase, and a thermal expansion valve or electric two-way valve can be used for throttling to improve temperature control stability and reduce fan energy consumption.

[0092] The pressure control device based on a gravity heat pipe provided in this application collects the temperature value inside the liquid cooling box through a temperature sensor. When the temperature value is greater than the set temperature value, the device controls the opening of the thermal expansion valve to increase the flow rate automatically; when the temperature value is less than or equal to the set temperature value, the device controls the opening of the thermal expansion valve to decrease the flow rate automatically. This precisely controls the temperature during heat exchange in the phase change system.

[0093] Based on the above-described gravity heat pipe-based temperature control device 100, this application also provides a gravity heat pipe-based temperature control method, applied to the above-described gravity heat pipe-based temperature control device 100. Figure 4 This is a schematic diagram illustrating the implementation process of a temperature control method based on a gravity heat pipe according to an embodiment of this application. Figure 4 As shown, the method includes:

[0094] Step S401: Collect the temperature value inside the liquid cooling box.

[0095] In step S402, when the temperature value is greater than the set temperature value, the electronic expansion valve is opened wider to 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 set value, control the electronic expansion valve to open slightly, thereby reducing 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 as described above and will not be repeated here.

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

[0099] In step S402, when the temperature value is greater than the set temperature value, the electronic expansion valve is opened wider to increase the flow rate between the gravity heat pipe assembly and the liquid cooling box. The set temperature value can be determined based on actual conditions and is not limited here. In practical applications, the set temperature value can be simply referred to as the set value. As an example, if the electronic expansion valve is a thermostatic expansion valve, opening the electronic expansion valve to increase the flow rate between the gravity heat pipe assembly and the liquid cooling box when the temperature value is greater than the set temperature value can be achieved by opening the thermostatic expansion valve to increase the flow rate between the gravity heat pipe assembly and the liquid cooling box when the temperature value is greater than the set temperature value. In practical applications, when the temperature value collected by the temperature sensor is greater than the set value, the thermostatic expansion valve automatically adjusts to a larger flow rate.

[0100] In step S403, when the temperature value is less than or equal to the set temperature value, the electronic expansion valve is opened slightly to reduce the flow rate between the gravity heat pipe assembly and the liquid cooling box. The set temperature value can be determined based on actual conditions and is not limited here. In practical applications, the set temperature value can be simply referred to as the set value. As an example, if the electronic expansion valve is a thermostatic expansion valve, reducing 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 set temperature value can be achieved by controlling the thermostatic expansion valve to open slightly to reduce 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 set temperature value. In practical applications, when the temperature value collected by the temperature sensor is less than or equal to the set value, the thermostatic 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 to a larger flow rate; if the collected temperature value is less than the set value, the thermal expansion valve automatically adjusts to a smaller flow rate. Thus, the phase change liquid cooler can be controlled through a simple control system.

[0102] In this embodiment, by collecting the temperature value inside the liquid cooling box, when the temperature value is greater than the set temperature value, the valve of the thermal expansion valve is opened wider to automatically adjust to a larger flow rate; when the temperature value is less than or equal to the set temperature value, the valve of the thermal expansion valve is opened narrower to automatically adjust to a smaller flow rate. This allows for precise control of the temperature during heat exchange in the phase change system.

[0103] In one optional embodiment of this application, the method further includes:

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

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

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

[0107] In one optional embodiment of this application, the method further includes:

[0108] The frequency of the control fan is kept constant, and the temperature sensor is controlled to collect the temperature value inside the liquid cooling box.

[0109] It should be noted that the statement that the frequency of the control fan remains unchanged can be understood as the control fan operating at a fixed frequency, which can be referred to as a fixed-frequency fan.

[0110] The control temperature sensor collecting the temperature value inside the liquid cooling box can be understood as the control temperature sensor collecting the temperature value inside the liquid cooling box in real time.

[0111] In practical applications, as an example, a pipeline design with a large-diameter inlet and a small-diameter outlet is adopted to ensure sufficient gas enters the heat pipe heat exchanger. When the fan is a fixed-frequency fan (to reduce costs), if the collected temperature value is greater than the set value, the thermal expansion valve automatically adjusts to a larger flow rate; if the collected temperature value is less than the set value, the thermal expansion valve automatically adjusts to a smaller flow rate. Thus, the phase change liquid cooler is 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 before the thermal expansion valve. The liquid storage unit is designed to facilitate sufficient heat exchange of the cooling medium during evaporation and condensation to achieve appropriate subcooling and superheat.

[0112] In one optional embodiment of this application, the method further includes:

[0113] Obtain the coefficient of temperature change inside the liquid cooling box;

[0114] The range of the temperature setpoint is determined based on the temperature variation coefficient.

[0115] Within the range of the temperature setpoint, the frequency at which the fan operates remains constant.

[0116] When the temperature value is outside the range of the set temperature value, the frequency at which the fan operates changes.

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

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

[0119] The phrase "controlling the fan to maintain a constant frequency within the temperature setpoint" can be understood as maintaining a constant fan frequency within the temperature setpoint range. In practical applications, as an example, this means maintaining a constant frequency when the actual temperature is within the set range or within ±5% of the setpoint.

[0120] When the temperature value is outside the set temperature range, changing the frequency of the fan can be understood as increasing or decreasing the frequency of the fan. In practical applications, increasing the frequency can be simply referred to as frequency boosting, and decreasing the frequency can be simply referred to as frequency reduction. As an example, when the actual temperature value is outside the set range or within ±5% of the set value, the fan is controlled to perform a corresponding frequency boosting or reduction.

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

[0122] In an optional embodiment of this application, when the operating frequency of the wind turbine changes, the method further includes:

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

[0124] It should be noted that the first preset time can be determined according to the actual situation 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 relatively frequently within the first preset time.

[0125] The second preset time can be determined according to the actual situation, 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 relatively high, the time for the temperature feedback value to trigger the next fan change can be delayed by +30 seconds.

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

[0128] This invention also provides a liquid-cooled data center, which includes the apparatus described in any of the preceding embodiments.

[0129] This invention also provides a computer program product, including a computer program that, when executed by a processor, implements the steps of the above-described method embodiments.

[0130] This application also provides a computer-readable medium storing a computer program thereon. When the computer program is executed by a processor, it implements the steps of the above-described method embodiments. The aforementioned storage medium includes various media capable of storing program code, such as mobile storage devices, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0131] If the method steps in the above-described system of this application are implemented as software functional 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 this application, essentially or the part that contributes to the prior art, can be embodied in the form of a software product, which is stored in a storage medium. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), magnetic disks, or optical disks. Thus, this application is not limited to any specific hardware and software combination.

[0132] Those skilled in the art will understand that all or part of the steps of the above method embodiments can be implemented by hardware related to program instructions. The aforementioned program can be stored in a computer-readable storage medium. When the program is executed, it performs the steps of the above method embodiments. The aforementioned storage medium includes various media capable of storing program code, such as mobile storage devices, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0133] The methods disclosed in the embodiments of this application can be applied to a processor or implemented by a processor. The processor may be an integrated circuit chip with signal processing capabilities. The steps of the methods disclosed in the embodiments of this application can be directly manifested as being executed by a hardware decoding processor, or executed by a combination of hardware and software modules in the decoding processor. The software modules may be located in a storage medium, which is located in memory. The processor reads information from the memory and, in conjunction with its hardware, completes the steps of the aforementioned method.

[0134] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A temperature control device based on a gravity heat pipe, characterized in that, The device includes: a gravity heat pipe assembly and a liquid-cooled box equipped with a sensor assembly; one end of the liquid-cooled box is connected to one end of the gravity heat pipe assembly via a first pipe; the other end of the liquid-cooled box is connected to the other end of the gravity heat pipe assembly via a second pipe; an electronic expansion valve is installed on the second pipe; the electronic expansion valve is connected to the sensor assembly; the gravity heat pipe assembly includes a fan and a gravity heat pipe; the fan is located on the gravity heat pipe; the pipe diameter of the first pipe and the pipe diameter of the second pipe are N:1, where N is an integer greater than or equal to 2; The sensor assembly is used to collect the temperature value inside 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 set 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 set value, thereby decreasing the flow rate between the gravity heat pipe assembly and the liquid cooling box. 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 working fluid flowing out of the gravity heat pipe assembly, so as to realize the heat exchange of the gravity heat pipe assembly during the condensation process and / or the liquid cooling box during the evaporation process. The device further includes a control component; the control component is used to acquire the temperature change coefficient inside the liquid cooling tank, and determine the range of the temperature setpoint based on the temperature change coefficient. The control component is further configured to, if the frequency of the fan's operation changes multiple times within a first preset time, delay the change of the fan's operating frequency for a second preset time.

2. The apparatus according to claim 1, characterized in that, The sensor assembly includes a temperature sensor; the control assembly is connected to both the fan and the temperature sensor. The control component is used to control the fan to operate at a constant frequency and to control the temperature sensor to collect the temperature value inside the liquid cooling box.

3. The apparatus according to claim 1, characterized in that, The control component is connected to the fan; The control component is further configured to control the frequency of the fan to remain constant when the temperature value is within the range of the temperature set value; and to control the frequency of the fan to change when the temperature value is outside the range of the temperature set value.

4. The apparatus according to claim 1, characterized in that, A gas circulation pump is installed on the first pipeline; the electronic expansion valve can be a thermostatic 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 gas in the liquid cooling box into the gravity heat pipe assembly; and to control the thermal expansion valve or electric two-way valve to increase the flow rate between the gravity heat pipe assembly and the liquid cooling box.

5. A control method, characterized in that, The method is applied to the temperature control device based on a gravity heat pipe as described in any one of claims 1 to 4; the method includes: Collect the temperature value inside the liquid cooling box; When the temperature value is greater than the set temperature value, the electronic expansion valve is opened wider to increase 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 set value, the valve of the electronic expansion valve is opened slightly to reduce the flow rate between the gravity heat pipe assembly and the liquid cooling box. The method further includes: The cooling medium flowing out of the gravity heat pipe assembly is stored to achieve heat exchange between the gravity heat pipe assembly during condensation and / or the liquid cooling box during evaporation. When the operating frequency of the wind turbine changes, the method further includes: If the frequency of the fan changes multiple times within a first preset time, the frequency of the fan will be controlled to change after a second preset time.

6. The method according to claim 5, characterized in that, The method further includes: The frequency of the control fan is kept constant, and the temperature sensor is controlled to collect the temperature value inside the liquid cooling box.

7. The method according to claim 5, characterized in that, The method further includes: Obtain the coefficient of temperature change inside the liquid cooling box; The range of the temperature setpoint is determined based on the temperature variation coefficient. Within the range of the temperature setpoint, the frequency at which the fan operates remains constant. When the temperature value is outside the range of the set temperature value, the frequency at which the fan operates changes.

8. A liquid-cooled data center, characterized in that, The liquid-cooled data center includes the temperature control device based on gravity heat pipe as described in any one of claims 1-4.

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