Anti-freezing control method, anti-freezing control device, heat exchange equipment and storage medium

Abstract

The invention discloses an anti-freezing control method and device for heat exchange equipment, the heat exchange equipment and a storage medium, and the anti-freezing control method comprises the steps that the environment temperature and the first water temperature of the heat exchange equipment in a standby state are obtained, and the first water temperature comprises the water inlet temperature and the water outlet temperature of the heat exchange equipment in the standby state; according to the environment temperature and the first water temperature, the start-stop interval time of the frost valve and the target judgment temperature of operation of the frost valve and the heating device are calculated correspondingly, and the second water temperature of the heat exchange equipment is detected in real time; and according to the second water temperature, the start-stop interval time and the target judgment temperature, the anti-freezing valve and the heating device are controlled to work. According to the anti-freezing control method, starting and stopping of the anti-freezing valve and heating of the heating device are controlled by obtaining the environment temperature and the water temperature of the heat exchange equipment in the standby state and the real-time water temperature, and therefore it is guaranteed that the heat exchange equipment is prevented from being damaged by low-temperature freezing, and meanwhile energy consumption is reduced.

Description

Technical Field

[0001] The present application relates to the field of heat pump control, and in particular to an antifreeze control method for heat exchange equipment, an antifreeze control device, heat exchange equipment and a storage medium. Background Art

[0002] The working principle of air source heat pump is based on heat pump technology. It is driven by an electric motor and uses the heat in the air as a low-temperature heat source to exchange heat through the air conditioner condenser or evaporator. Then, heat energy is extracted or released through the circulation system, and the unit circulation system is used to transfer energy to the building to meet the user's heating or cooling needs. With the development of society and the advancement of technology, air source heat pumps have the characteristics of easy installation, wide applicability, and low initial investment. Therefore, the demand for air source heat pumps is increasing. However, in cold weather, the pipelines of air source heat pumps are at risk of freezing, cracking, and water leakage. Therefore, it is necessary to adopt refined and intelligent control strategies to improve the performance of air source heat pumps while ensuring pipeline safety. Summary of the invention

[0003] Embodiments of the present application provide an antifreeze control method for a heat exchange device, an antifreeze control device, a heat exchange device, and a non-volatile computer-readable storage medium.

[0004] The embodiment of the present application provides an antifreeze control method for a heat exchange device, comprising:

[0005] The heat exchange device includes an antifreeze valve and a heating device, and the antifreeze control method includes:

[0006] Acquire the ambient temperature and the first water temperature of the heat exchange device in the standby state, wherein the first water temperature includes the water inlet temperature and the water outlet temperature of the heat exchange device in the standby state;

[0007] Calculating the start and stop interval time of the antifreeze valve, the target determination temperature of the antifreeze valve and the heating device according to the ambient temperature and the first water temperature, and detecting the second water temperature of the heat exchange device in real time; and

[0008] The antifreeze valve and the heating device are controlled to operate according to the second water temperature, the start-stop interval time, and the target determination temperature.

[0009] In some embodiments, the target determination temperature includes a first target determination temperature, and the controlling the antifreeze valve and the heating device to operate according to the second water temperature, the start-stop interval time, and the target determination temperature includes:

[0010] comparing the second water temperature with the first target determination temperature;

[0011] When the second water temperature is less than or equal to the first target determination temperature, the antifreeze control state is entered to control the antifreeze valve to operate according to the start-stop interval time.

[0012] In some embodiments, the target determination temperature further includes a second target determination temperature, and the controlling the antifreeze valve and the heating device to operate according to the second water temperature, the start-stop interval time, and the target determination temperature includes:

[0013] In the case where the antifreeze valve is controlled to operate according to the start-stop interval time, determining whether the second water temperature is less than the second target determination temperature;

[0014] When the second water temperature is lower than or equal to the second target determination temperature, the heating device is controlled to operate.

[0015] In some embodiments, the target determination temperature further includes a third target determination temperature, the third target determination temperature is greater than the second target determination temperature, and the controlling the antifreeze valve and the heating device to operate according to the second water temperature, the start-stop interval time, and the target determination temperature further includes:

[0016] When the second water temperature is greater than the third target determination temperature, the antifreeze control state is exited to control the antifreeze valve and the heating device to stop working.

[0017] In some embodiments, the controlling the antifreeze valve and the heating device to operate according to the second water temperature, the start-stop interval time, and the target determination temperature further includes:

[0018] When the second water temperature is greater than the second target determination temperature, the antifreeze control state is exited to control the antifreeze valve to stop working.

[0019] In some embodiments, calculating the start and stop interval of the antifreeze valve and the target determination temperature for the operation of the antifreeze valve and the heating device according to the ambient temperature and the first water temperature respectively includes:

[0020] Comparing the water outlet temperature with the water inlet temperature;

[0021] When the water outlet temperature is lower than the water inlet temperature, the start-stop interval time and the target determination temperature are calculated according to the water outlet temperature and the ambient temperature;

[0022] When the water outlet temperature is greater than the water inlet temperature, the start-stop interval time and the target determination temperature are calculated according to the water inlet temperature and the ambient temperature.

[0023] The antifreeze control device of the embodiment of the present application is used for heat exchange equipment, and the antifreeze control device includes:

[0024] An acquisition module, used to acquire the ambient temperature and the first water temperature of the heat exchange device in the standby state, wherein the first water temperature includes the water inlet temperature and the water outlet temperature of the heat exchange device in the standby state;

[0025] a processing module, configured to calculate the start and stop interval time of the antifreeze valve, the target determination temperature of the antifreeze valve and the heating device according to the ambient temperature and the first water temperature, and detect the second water temperature of the heat exchange device in real time; and

[0026] A control module is used to control the operation of the antifreeze valve and the heating device according to the second water temperature, the start-stop interval time, and the target determination temperature.

[0027] The heat exchange device of the embodiment of the present application includes a processor and a memory, wherein the memory stores a computer program. When the computer program is executed by the processor, the processor implements the antifreeze control method.

[0028] The present application implements an antifreeze non-volatile computer-readable storage medium, including a computer program. When the computer program is executed by a processor, the processor implements the antifreeze control method.

[0029] In the antifreeze control method, antifreeze control device, heat exchange equipment and storage medium of the implementation mode of the present application, the ambient temperature and the first water temperature of the heat exchange equipment in the standby state are obtained, and the start and stop interval time of the antifreeze valve and the target judgment temperature for the operation of the antifreeze valve and the heating device are calculated according to the ambient temperature and the first water temperature, respectively. Then, the antifreeze valve interval start and stop and the heating of the heating device are controlled according to the second water temperature, the start and stop interval time and the target judgment temperature of the heat exchange equipment detected in real time. In this way, on the one hand, the risk of freezing, cracking and leakage of the pipeline of the heat exchange equipment is reduced, thereby ensuring the safety of the heat exchange equipment. On the other hand, since the control of the start and stop interval time of the antifreeze valve and the heating control of the heating device are determined by the ambient temperature and the pipeline water temperature of the heat exchange equipment in the standby state, excessive consumption of the heat exchange equipment in the antifreeze control state can be avoided, thereby improving the performance of the heat exchange equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0031] Figure 1 is a schematic flow chart of an antifreeze control method according to certain embodiments of the present application;

[0032] Figure 2is a schematic diagram of a module of an antifreeze control device according to certain embodiments of the present application;

[0033] Figure 3 is a schematic diagram of a module of a heat exchange device in certain embodiments of the present application;

[0034] Figure 4-7 It is a schematic diagram of the flow of heat exchange equipment in certain embodiments of the present application. DETAILED DESCRIPTION

[0035] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals represent the same or similar elements or elements having the same or similar functions from beginning to end. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the embodiments of the present invention, and cannot be understood as limiting the embodiments of the present invention.

[0036] See also Figure 1 The embodiment of the present application provides an antifreeze control method for a heat exchange device, the heat exchange device includes a heating device and an antifreeze valve, and the antifreeze control method includes:

[0037] 01: Obtain the ambient temperature and the first water temperature of the heat exchange device in the standby state, where the first water temperature includes the water inlet temperature and the water outlet temperature of the heat exchange device in the standby state;

[0038] 02: Calculate the start and stop interval time of the antifreeze valve, the target judgment temperature of the antifreeze valve and the heating device according to the ambient temperature and the first water temperature, and detect the second water temperature of the heat exchange equipment in real time; and

[0039] 03: The antifreeze valve and the heating device are controlled to work according to the second water temperature, the start-stop interval time, and the target judgment temperature.

[0040] See also Figure 2 This embodiment further provides an antifreeze control device 10 , which includes a detection module 110 , a processing module 120 and a control module 130 .

[0041] Step 01 can be implemented by the detection module 110, step 02 can be implemented by the processing module 120, and step 03 can be implemented by the control module 130. That is, the detection module 110 is used to obtain the ambient temperature and the first water temperature of the heat exchange device in the standby state, and the first water temperature includes the water inlet temperature and the water outlet temperature of the heat exchange device in the standby state; the processing module 120 is used to calculate the start and stop interval time of the antifreeze valve, the target judgment temperature of the antifreeze valve and the heating device according to the ambient temperature and the first water temperature, and detect the second water temperature of the heat exchange device in real time; the control module 130 is used to control the antifreeze valve and the heating device to work according to the second water temperature, the start and stop interval time, and the target judgment temperature.

[0042] The embodiment of the present application also provides a heat exchange device, which includes a processor and a memory, wherein the memory stores a computer program. When the computer program is executed by the processor, the processor executes the above-mentioned antifreeze control method, that is, the processor can be used to obtain the ambient temperature and the first water temperature of the heat exchange device in the standby state, the first water temperature includes the water inlet temperature and the water outlet temperature of the heat exchange device in the standby state; and calculate the start and stop interval time of the antifreeze valve, the target judgment temperature of the antifreeze valve and the heating device according to the ambient temperature and the first water temperature, and detect the second water temperature of the heat exchange device in real time; and control the operation of the antifreeze valve and the heating device according to the second water temperature, the start and stop interval time, and the target judgment temperature.

[0043] In the antifreeze control method, antifreeze control device 10 and heat exchange equipment of the present application, the ambient temperature and the first water temperature of the heat exchange equipment in the standby state are obtained, and the start and stop interval time of the antifreeze valve and the target judgment temperature for the operation of the antifreeze valve and the heating device are calculated according to the ambient temperature and the first water temperature, respectively. Then, the antifreeze valve interval start and stop and the heating of the heating device are controlled according to the second water temperature, the start and stop interval time and the target judgment temperature of the heat exchange equipment detected in real time. In this way, on the one hand, the risk of freezing, cracking and leakage of the pipeline of the heat exchange equipment is reduced, thereby ensuring the safety of the heat exchange equipment. On the other hand, since the control of the start and stop interval time of the antifreeze valve and the heating control of the heating device are determined by the ambient temperature and the pipeline water temperature of the heat exchange equipment in the standby state, excessive consumption of the heat exchange equipment in the antifreeze control state can be avoided, thereby improving the performance of the heat exchange equipment.

[0044] In some embodiments, the antifreeze control device 10 may be a part of a heat exchange device. In other words, the heat exchange device includes the antifreeze control device 10 .

[0045] In some embodiments, the antifreeze control device 10 may be a discrete component assembled in a certain manner to have the aforementioned functions, or a chip having the aforementioned functions in the form of an integrated circuit, or a computer software code segment that enables the computer to have the aforementioned functions when running on the computer.

[0046] In some embodiments, as hardware, the antifreeze control device 10 can be independent or installed as an additional peripheral component in the heat exchange device. The antifreeze control device 10 can also be integrated into the heat exchange device. For example, when the antifreeze control device 10 is a part of the heat exchange device, the antifreeze control device 10 can be integrated into the processor.

[0047] The heat exchange device can be a heat pump system, which can include but is not limited to air source heat pumps, water source heat pumps, ground source heat pumps and other heat pump systems. In this embodiment, the heat exchange device can be explained by taking an air source heat pump as an example; those skilled in the art can understand that an air source heat pump is a device that utilizes the reverse Carnot principle to convert low-temperature heat energy in the air into high-temperature heat energy by consuming electrical energy, etc., to achieve cooling or heating functions.

[0048] See also Figure 2 , Figure 2 Schematic diagram of modules of some embodiments of the present application. Specifically, the heat exchange device 100 may include an outdoor unit 101 (heat pump), at least one indoor unit 102, and a water circulation module 103. The outdoor unit 101 is connected to the indoor unit 102 through the water circulation module 103, and is used to achieve heat transfer through heat exchange between air and a heating or cooling medium. The indoor unit 102 is used to perform heat exchange based on water, and the water circulation module 103 is used to achieve water circulation of the heat exchange device.

[0049] The outdoor unit 101 may include components such as a compressor, a heat exchanger, a condenser, a liquid storage tank, and a temperature sensor. The temperature sensor may be used to detect the ambient temperature. A flow switch and a temperature sensor for detecting the inlet water temperature may be provided at the water inlet of the outdoor unit; a temperature sensor for detecting the outlet water temperature may be provided at the water outlet of the outdoor unit. The circulation module 103 may include a circulation pipeline 1031, an antifreeze valve 1032, a water tank 1033, an electric heating belt, and the like. The circulation pipeline 1031 may be connected to the water inlet, the water outlet, the indoor unit, and the water tank 1033 of the outdoor unit 101. The antifreeze valve 1032 is provided in the circulation pipeline 1031. The antifreeze valve 1032 is used to protect the circulation pipeline 1031. When the antifreeze valve 1032 is opened, the water in the circulation pipeline 1031 flows to prevent the circulation pipeline 1031 from freezing or leaking due to low temperature freezing.

[0050] It should be noted that the above-mentioned heating device can be at least one of a heat pump and an electric heating belt.

[0051] The heat exchange equipment may include multiple working modes such as heating mode, cooling mode, standby mode, and anti-freeze mode. In the heating mode, the heat exchange equipment enters the heating state, the heat pump absorbs external heat, and transfers it to the indoor unit through the water in the circulation pipeline, thereby achieving heating. In the cooling mode, the heat exchange equipment enters the cooling state, and the heat pump discharges heat through the refrigeration cycle, thereby achieving cooling. Standby mode refers to a low-power state of the heat exchange equipment when it is not performing main functions such as heating or cooling. In the standby mode, the heat exchange equipment enters the standby state, and the heat exchange equipment will shut down or reduce the operation of its key components such as the compressor and fan, but still maintain a certain power supply to quickly respond to the start command. The anti-freeze mode is used to protect the heat exchange equipment in a low temperature environment to avoid freezing of the heat exchange equipment. In the anti-freeze mode, the anti-freeze valve can be started at intervals so that the water in the circulation pipeline can flow regularly to reduce the risk of freezing, and the heating devices such as the electric heating belt or the heat pump can also start working, so that the risk of freezing of the heat exchange equipment can be avoided and the safety of the heat exchange equipment in a low temperature environment can be ensured.

[0052] Since the heat exchange device is in a low power consumption state in the standby state, in cold weather, it is easy to cause the outdoor unit of the heat exchange device, the water circulation module and other components to be frozen and cracked, which can easily cause damage to the heat exchange device. Therefore, in this embodiment, when the heat exchange device enters the standby state, it can be determined whether to enter the anti-freeze mode according to the ambient temperature of the outdoor unit and the water temperature (first water temperature) at the water inlet and outlet.

[0053] Specifically, when the heat exchange device turns on the standby mode and enters the standby state, the processor can obtain the ambient temperature through the temperature sensor of the outdoor unit (heat pump), and obtain the first temperature through the temperature sensors at the water outlet and the water inlet of the outdoor unit, that is, the water outlet temperature and the water inlet temperature of the heat exchange device when entering the standby state. And the start-stop interval time of the antifreeze valve, the target judgment temperature of the antifreeze valve and the heating device can be calculated according to the ambient temperature and the first water temperature, and the second temperature (that is, the water inlet temperature and the water outlet temperature) can be obtained in real time through the temperature sensors at the water inlet and the water outlet. Among them, the start-stop interval time refers to the interval between two adjacent starts of the antifreeze valve. The target judgment temperature of the antifreeze valve and the heating device may include but is not limited to the start-up and operating temperature of the antifreeze valve, the start judgment of the heating device, and the operation judgment temperature.

[0054] The start-stop interval is negatively correlated with the target determination temperature and the ambient temperature, that is, the smaller the target determination temperature and the ambient temperature, the shorter the start-stop interval, so that the risk of water freezing can be reduced. The larger the target determination temperature and the ambient temperature, the longer the start-stop interval, so that energy consumption can be reduced and the performance of the heat exchange equipment can be improved. The target determination temperature may be negatively correlated with the ambient temperature and the first temperature, that is, the larger the ambient temperature and the first temperature, the smaller the target determination temperature, and conversely, the smaller the ambient temperature and the first temperature, the larger the target determination temperature.

[0055] Furthermore, after obtaining the start / stop interval time of the antifreeze valve, the target determination temperature, and the target determination temperature of the heating device, the start / stop of the antifreeze valve can be controlled according to the second water temperature detected in real time, the target determination temperature of the antifreeze valve, and the start / stop interval time, and the working state of the heating device can be controlled according to the second water temperature and the target determination temperature of the heating device. In this way, the risk of freezing of the heat exchange equipment in a low temperature environment is reduced, and at the same time, the performance of the heat exchange equipment in antifreeze control is improved.

[0056] See also Figure 4 In some embodiments, 02 further includes:

[0057] 021: Compare the outlet temperature and the inlet temperature;

[0058] 022: When the water outlet temperature is lower than the water inlet temperature, the start-stop interval and target judgment temperature are calculated based on the water outlet temperature and the ambient temperature; or

[0059] 023: When the water outlet temperature is greater than the water inlet temperature, the start-stop interval time and the target judgment temperature are calculated based on the water inlet temperature and the ambient temperature.

[0060] Please combine Figure 2 In some embodiments, 021-023 can be implemented by the processing module 120, or the processing module 120 can be used to compare the water outlet temperature and the water inlet temperature; when the water outlet temperature is lower than the water inlet temperature, the start-stop interval and the target judgment temperature are calculated based on the water outlet temperature and the ambient temperature; when the water outlet temperature is higher than the water inlet temperature, the start-stop interval and the target judgment temperature are calculated based on the water inlet temperature and the ambient temperature.

[0061] In certain embodiments, the processor can be used to compare the water outlet temperature and the water inlet temperature; when the water outlet temperature is lower than the water inlet temperature, the start-stop interval and the target judgment temperature are calculated based on the water outlet temperature and the ambient temperature; when the water outlet temperature is higher than the water inlet temperature, the start-stop interval and the target judgment temperature are calculated based on the water inlet temperature and the ambient temperature.

[0062] Specifically, since the first temperature includes the water inlet temperature and the water outlet temperature, when calculating the start-stop interval and the target judgment temperature based on the ambient temperature and the first temperature, the water inlet temperature and the water outlet temperature can be summed and then divided to obtain the temperature average, and then the start-stop interval and the target judgment temperature can be calculated based on the temperature average and the ambient temperature, or the start-stop interval and the target judgment temperature can be calculated based on the lower temperature value of the first temperature and the ambient temperature. In this embodiment, the start-stop interval and the target judgment temperature are calculated based on the lower temperature value of the first temperature and the ambient temperature, so that the risk of the heat exchange equipment being frozen can be further reduced.

[0063] The target determination temperature includes a first target determination temperature, a second target determination temperature, and a third target determination temperature, wherein the first target determination temperature is used to determine whether the heat exchange device enters the antifreeze mode and whether the antifreeze valve is activated, the second target determination temperature is used to determine whether the heating device is activated, and the third target determination temperature is used to determine whether the heat exchange device exits the antifreeze mode. The third target determination temperature is greater than the second target determination temperature and the first target determination temperature, and the first target determination temperature may be greater than, less than, or equal to the second target determination temperature.

[0064] The calculation expression of the first target judgment temperature can be:

[0065] Tn1=-X1*T4+Y1*MIN(Ti,To)+Z1

[0066] Among them, Tn1 is the first target judgment temperature, T4 is the ambient temperature, Ti is the water inlet temperature, To is the water outlet temperature, X1 and Y1 are correction coefficients, Z1 is the compensation coefficient, and X1, Y1 and Z1 can be obtained by experimental fitting.

[0067] The calculation expression of the second target determination temperature can be:

[0068] Tn2=-X2*T4+Y2*MIN(Ti,To)+Z2

[0069] Among them, Tn2 is the first target judgment temperature, T4 is the ambient temperature, Ti is the water inlet temperature, To is the water outlet temperature, X2 and Y2 are correction coefficients, Z2 is the compensation coefficient, and X2, Y2 and Z2 can be obtained by experimental fitting.

[0070] The calculation expression of the third target determination temperature can be:

[0071] Tn3=-X3*T4+Y3*MIN(Ti,To)+Z3

[0072] Among them, Tn3 is the third target judgment temperature, T4 is the ambient temperature, Ti is the water inlet temperature, To is the water outlet temperature, X3 and Y3 are correction coefficients, Z3 is the compensation coefficient, and X3, Y3 and Z3 can be obtained by experimental fitting.

[0073] The calculation expression of the start-stop interval time can be:

[0074] A=-X4*T4+Y4*MIN(Ti,To)+Z4

[0075] Among them, A is the start-stop interval time, T4 is the ambient temperature, Ti is the water inlet temperature, To is the water outlet temperature, X4 and Y4 are correction coefficients, and Z4 is the compensation coefficient. X4, Y4 and Z4 can be obtained by experimental fitting.

[0076] Please combine Figure 5 In some embodiments, 03 includes:

[0077] 031: Compare the second water temperature with the first target determination temperature;

[0078] 032: When the second water temperature is less than or equal to the first target judgment temperature, enter the antifreeze control state to control the operation of the antifreeze valve according to the start-stop interval time.

[0079] Please further combine Figure 2 In some embodiments, 031-032 can be implemented by the control module 130, or in other words, the control module 130 can be used to compare the second water temperature with the first target judgment temperature; and when the second water temperature is less than or equal to the first target judgment temperature, enter the antifreeze control state to control the operation of the antifreeze valve according to the start-stop interval time.

[0080] In some embodiments, the processor can be used to compare the second water temperature with the first target determination temperature; and when the second water temperature is less than or equal to the first target determination temperature, enter the antifreeze control state to control the operation of the antifreeze valve according to the start-stop interval time.

[0081] For example, in some examples, the first target determination temperature is 2°. If the currently detected temperature is 0°, the antifreeze control state controls the antifreeze valve to operate according to the start-stop interval time.

[0082] In this way, when the second water temperature is less than or equal to the first target determination temperature, the water in the circulation pipeline can flow regularly, thereby reducing the risk of freezing of the heat exchange device.

[0083] In addition, it should be noted that, when the second water temperature is greater than the first target determination temperature, the antifreeze control state is not entered and the standby mode is maintained.

[0084] Please combine Figure 6 In some embodiments, 03 further includes:

[0085] 033: When the antifreeze valve is controlled to work according to the start-stop interval time, determining whether the second water temperature is less than the second target determination temperature;

[0086] 034: When the second water temperature is less than or equal to the second target judgment temperature, the heating device is controlled to operate.

[0087] In some embodiments, 033-034 can be implemented by the control module 130, or in other words, the control module 130 can be used to determine whether the second water temperature is lower than the second target judgment temperature while controlling the operation of the antifreeze valve according to the start-stop interval; and control the operation of the heating device when the second water temperature is lower than or equal to the second target judgment temperature.

[0088] In some embodiments, the processor can be used to determine whether the second water temperature is less than the second target judgment temperature when controlling the operation of the antifreeze valve according to the start-stop interval; when the second water temperature is less than or equal to the second target judgment temperature, control the operation of the heating device.

[0089] In step 034, only the electric heating belt can be controlled to work, only the heat pump can be controlled to work, or both the electric heating belt and the heat pump can be controlled to work simultaneously. Moreover, when the heat pump is working, the heat pump absorbs external heat to increase the overall temperature of the heat exchange device.

[0090] In this way, when the second water temperature is less than or equal to the second target determination temperature, the power consumption of the heat exchange device can be reduced without the risk of freezing.

[0091] Please further combine Figure 6 In some embodiments, 03 further includes:

[0092] 035: When the second water temperature is greater than the second target judgment temperature, exit the antifreeze control state to control the antifreeze valve to stop working.

[0093] In some embodiments, 035 can be implemented by the control module 130, or in other words, the control module 130 can be used to exit the antifreeze control state to control the antifreeze valve to stop working when the second water temperature is greater than the second target judgment temperature.

[0094] In some embodiments, the processor may be configured to exit the antifreeze control state to control the antifreeze valve to stop working when the second water temperature is greater than the second target determination temperature.

[0095] It should be noted that after exiting the antifreeze control state, the heat exchange device can be controlled to continue to enter the standby mode, so that the heat exchange device is in a low power consumption state.

[0096] In this way, by controlling the antifreeze valve to stop working when the second water temperature is greater than the second target determination temperature, the power consumption of the heat exchange device can be reduced without the risk of freezing.

[0097] Please combine Figure 7 In some embodiments, 03 further includes:

[0098] 036: When the second water temperature is greater than the third target judgment temperature, exit the antifreeze control state to control the antifreeze valve and the heating device to stop working.

[0099] In some embodiments, 036 can be implemented by the control module 130, or in other words, the control module 130 can be used to exit the antifreeze control state to control the antifreeze valve and the heating device to stop working when the second water temperature is greater than the third target judgment temperature.

[0100] In some embodiments, the processor may be configured to exit the antifreeze control state to control the antifreeze valve and the heating device to stop working when the second water temperature is greater than the third target determination temperature.

[0101] It should be noted that after the second water temperature is greater than the third target judgment temperature and the antifreeze control state is exited, the standby mode can be entered, so that the heat exchange device is in a low power consumption state.

[0102] In this way, by controlling the antifreeze valve and the heating device to stop working when the second water temperature is greater than the second target determination temperature, the energy consumption of the heat exchange equipment can be reduced without the risk of freezing.

[0103] The embodiment of the present application also provides a non-volatile computer-readable storage medium, which stores a computer program. When the computer program is executed by a processor, the processor executes any one of the above-mentioned antifreeze control methods.

[0104] In the readable storage medium of the present application, by obtaining the ambient temperature and the first water temperature of the heat exchanger in the standby state, and calculating the start and stop interval time of the antifreeze valve and the target judgment temperature for the operation of the antifreeze valve and the heating device according to the ambient temperature and the first water temperature, respectively, the antifreeze valve interval start and stop and the heating of the heating device are controlled according to the second water temperature, the start and stop interval time and the target judgment temperature of the heat exchanger detected in real time. In this way, on the one hand, the risk of freezing, cracking and leakage of the pipeline of the heat exchanger is reduced to ensure the safety of the heat exchanger. On the other hand, since the control of the start and stop interval time of the antifreeze valve and the heating control of the heating device are determined by the ambient temperature and the pipeline water temperature of the heat exchanger in the standby state, the excessive consumption of the heat exchanger in the antifreeze control state can be avoided, thereby improving the performance of the heat exchanger.

[0105] In the description of this specification, the description with reference to the terms "one embodiment", "certain embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiments or examples are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0106] Although the embodiments of the present application have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present application, and that the scope of the present application is defined by the claims and their equivalents.

[0107] 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 method for controlling the antifreeze of a heat exchanger, characterized in that: The heat exchange device includes an antifreeze valve and a heating device, and the antifreeze control method includes: Acquire the ambient temperature and the first water temperature of the heat exchange device in the standby state, wherein the first water temperature includes the water inlet temperature and the water outlet temperature of the heat exchange device in the standby state; Calculating the start and stop interval time of the antifreeze valve, the target determination temperature of the antifreeze valve and the heating device according to the ambient temperature and the first water temperature, and detecting the second water temperature of the heat exchange device in real time; and The antifreeze valve and the heating device are controlled to operate according to the second water temperature, the start-stop interval time, and the target determination temperature.

2. The antifreeze control method according to claim 1, characterized in that: The target determination temperature includes a first target determination temperature, and the controlling of the antifreeze valve and the heating device according to the second water temperature, the start-stop interval time, and the target determination temperature includes: comparing the second water temperature with the first target determination temperature; When the second water temperature is less than or equal to the first target determination temperature, the antifreeze control state is entered to control the antifreeze valve to operate according to the start-stop interval time.

3. The antifreeze control method according to claim 2, characterized in that: The calculation expression of the first target determination temperature includes: Tn1=-X1*T4+Y1*MIN(Ti,To)+Z1 Among them, Tn1 is the first target judgment temperature, T4 is the ambient temperature, Ti is the water inlet temperature, To is the water outlet temperature, X1 and Y1 are correction coefficients, and Z1 is the compensation coefficient.

4. The antifreeze control method according to claim 2, characterized in that: The target determination temperature also includes a second target determination temperature, and the controlling of the antifreeze valve and the heating device according to the second water temperature, the start-stop interval time, and the target determination temperature includes: In the case where the antifreeze valve is controlled to operate according to the start-stop interval time, determining whether the second water temperature is less than the second target determination temperature; When the second water temperature is lower than or equal to the second target determination temperature, the heating device is controlled to operate.

5. The antifreeze control method according to claim 4, characterized in that: The calculation expression of the second target determination temperature can be: Tn2=-X2*T4+Y2*MIN(Ti,To)+Z2 Among them, Tn2 is the first target judgment temperature, T4 is the ambient temperature, Ti is the water inlet temperature, To is the water outlet temperature, X2 and Y2 are correction coefficients, and Z2 is the compensation coefficient.

6. The antifreeze control method according to claim 4, characterized in that: The target determination temperature further includes a third target determination temperature, and the third target determination temperature is greater than the second target determination temperature. The controlling the antifreeze valve and the heating device to operate according to the second water temperature, the start-stop interval time, and the target determination temperature also includes: When the second water temperature is greater than the third target determination temperature, the antifreeze control state is exited to control the antifreeze valve and the heating device to stop working.

7. The antifreeze control method according to claim 6, characterized in that: The calculation expression of the third target determination temperature can be: Tn3=-X3*T4+Y3*MIN(Ti,To)+Z3 Among them, Tn3 is the third target judgment temperature, T4 is the ambient temperature, Ti is the water inlet temperature, To is the water outlet temperature, X3 and Y3 are correction coefficients, and Z3 is the compensation coefficient.

8. The antifreeze control method according to claim 4, characterized in that: The step of controlling the antifreeze valve and the heating device to work according to the second water temperature, the start-stop interval time, and the target determination temperature also includes: When the second water temperature is greater than the second target determination temperature, the antifreeze control state is exited to control the antifreeze valve to stop working.

9. The antifreeze control method according to claim 4, characterized in that: Calculating the start and stop interval time of the antifreeze valve and the target determination temperature of the antifreeze valve and the heating device according to the ambient temperature and the first water temperature, respectively, including: Comparing the water outlet temperature with the water inlet temperature; When the water outlet temperature is lower than the water inlet temperature, the start-stop interval time and the target determination temperature are calculated according to the water outlet temperature and the ambient temperature; When the water outlet temperature is greater than the water inlet temperature, the start-stop interval time and the target determination temperature are calculated according to the water inlet temperature and the ambient temperature.

10. The antifreeze control method according to claim 9, characterized in that: The calculation expression of the start-stop interval time includes: A=-X4*T4+Y4*MIN(Ti,To)+Z4 Among them, A is the start-stop interval, T4 is the ambient temperature, Ti is the water inlet temperature, To is the water outlet temperature, and X4 and Y4 are correction coefficients.

11. An antifreeze control device for heat exchange equipment, characterized in that: The heat exchange device includes an antifreeze valve and a heating device, and the antifreeze control device includes: An acquisition module, used to acquire the ambient temperature and the first water temperature of the heat exchange device in the standby state, wherein the first water temperature includes the water inlet temperature and the water outlet temperature of the heat exchange device in the standby state; a processing module, configured to calculate the start and stop interval time of the antifreeze valve, the target determination temperature of the antifreeze valve and the heating device according to the ambient temperature and the first water temperature, and detect the second water temperature of the heat exchange device in real time; and A control module is used to control the operation of the antifreeze valve and the heating device according to the second water temperature, the start-stop interval time, and the target determination temperature.

12. A heat exchange device, characterized in that: The invention comprises a processor and a memory, wherein the memory stores a computer program, and when the computer program is executed by the processor, the processor implements the antifreeze control method according to any one of claims 1 to 10.

13. A non-volatile computer-readable storage medium, characterized in that: It comprises a computer program, and when the computer program is executed by a processor, the processor implements the antifreeze control method according to any one of claims 1 to 10.

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