Control method of air conditioning system, air conditioning system and storage medium

Abstract

The invention provides a control method of an air conditioning system, the air conditioning system and a storage medium. The air conditioning system comprises a compressor and at least one radiation assembly. The compressor comprises an exhaust port and an air return port. The radiation assembly is arranged between the exhaust port and the air return port; the radiation assembly comprises a first valve, a second valve and a radiation module, the radiation module comprises a first port and a second port, and under the condition that the air conditioning system works in a heating mode, the first valve is located between the first port and the exhaust port, and the second valve is located between the second port and the air return port; the method further comprises the steps that under the condition that the air conditioner system receives a shutdown instruction, refrigerant transfer operation is carried out, and the refrigerant transfer operation comprises the steps that the air conditioner system is controlled to operate in a heating mode, the first valve is opened, and the second valve is closed; and under the condition that the refrigerant transfer operation is completed, the compressor is controlled to stop running. And the rapid heating requirement of a user can be met.

Description

Technical Field

[0001] This application relates to the technical field of air conditioners, and particularly to a control method for an air conditioning system, an air conditioning system, and a non-volatile computer-readable storage medium. Background Art

[0002] Currently, the heating terminals in the hot summer and cold winter regions of China can be divided into two categories according to their heat exchange methods: convection type and radiation type. The convection type terminal can quickly and accurately adjust the heat exchange capacity by adjusting the air flow, and can better adapt to intermittent operation and variable working conditions. However, the noise and blowing feeling during its operation greatly limit the comfort improvement of this type of terminal; while the radiation type terminal mainly relies on the natural convection formed by the temperature difference between the terminal surface and the indoor air, and the heat radiation formed between the terminal surface and the indoor human body, objects, and wall surfaces to achieve heat exchange, and its technical indicators in terms of noise and blowing feeling are significantly better than those of the convection type terminal.

[0003] During the heating startup process of a traditional air conditioner indoor unit, it is necessary to establish a pressure difference between the condenser and the evaporator, that is, a process of building a cycle is required. In order to avoid blowing cold air when the refrigerant cycle is established and affect the user experience, modern air conditioning systems have been optimized in design and adopted a preheating function. When starting the heating mode, the air conditioner will first perform internal preheating to ensure that the refrigerant reaches a certain temperature before starting the fan, so as to avoid blowing cold air and directly provide warm air. However, this preheating time is about 3-5 minutes, which cannot meet the user's demand for rapid heating. Summary of the Invention

[0004] The embodiments of this application provide a control method for an air conditioning system, an air conditioning system, and a non-volatile computer-readable storage medium, which can achieve rapid heating.

[0005] The embodiments of this application provide a control method for an air conditioning system. The air conditioning system includes a compressor and at least one radiation component. The compressor includes an exhaust port and a suction port; the radiation component is arranged between the exhaust port and the suction port; the radiation component includes a first valve, a second valve, and a radiation module. The radiation module includes a first port and a second port. When the air conditioning system is operating in the heating mode, the first valve is located between the first port and the exhaust port, and the second valve is located between the second port and the suction port; the method further includes:

[0006] When receiving a shutdown instruction, the air conditioning system performs a refrigerant transfer operation. The refrigerant transfer operation includes controlling the air conditioning system to operate in the heating mode, opening the first valve, and closing the second valve; after completing the refrigerant transfer operation, controlling the compressor to stop running.

[0007] An embodiment of the present application provides an air conditioning system. The air conditioning system includes a compressor, at least one radiation component, and a controller. The compressor includes an exhaust port and a suction port; the radiation component is disposed between the exhaust port and the suction port; the radiation component includes a first valve, a second valve, and a radiation module. The radiation module includes a first port and a second port. When the air conditioning system operates in the heating mode, the first valve is located between the first port and the exhaust port, and the second valve is located between the second port and the suction port; the controller is configured to execute the above control method.

[0008] An embodiment of the present application provides a non - volatile computer - readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, the above control method is implemented.

[0009] The control method of the air conditioning system, the air conditioning system, and the non - volatile computer - readable storage medium of the present application. The air conditioning system is provided with at least one radiation component, and each radiation component is separately provided with a first valve, a second valve, and a radiation module. When the air conditioning system operates in the heating mode, the first valve is used to control the amount of refrigerant flowing from the exhaust port into the radiation module, and the second valve is used to control the amount of refrigerant flowing into the suction port; when the air conditioning system shuts down, the compressor is not immediately controlled to stop running. Instead, a refrigerant transfer operation will be performed first, and the refrigerant will be transferred into the radiation module. The refrigerant transfer operation is that the air conditioning system operates in the heating mode, the first valve is opened and the second valve is closed. At this time, the refrigerant at the exhaust port will continuously flow into the radiation module through the first valve. Since the second valve is closed, the refrigerant cannot flow into the suction port. As the air conditioning system operates, the refrigerant is continuously transferred into the radiation module. After the refrigerant transfer is completed, the compressor is then controlled to stop running. At this time, the refrigerant is stored in the radiation module. When the air conditioning system starts again in the heating mode, since a large amount of refrigerant is stored in the radiation module, the pressure difference of the air conditioning system can be quickly established. After the compressor runs, the radiation module can quickly heat up to meet the user's demand for quick heating.

[0010] The additional aspects and advantages of the embodiments of the present application will be partially given in the following description, partially become obvious from the following description, or be understood through the practice of the present application. Description of the Drawings

[0011] The above - mentioned and / or additional aspects and advantages of the present application will become obvious and easy to understand from the description of the embodiments in conjunction with the following drawings, where:

[0012] Figure 1 is a schematic structural diagram of the air conditioning system according to some embodiments of the present application when operating in the heating mode;

[0013] Figure 2It is a schematic structural diagram of an air conditioning system according to some embodiments of the present application operating in a refrigeration mode or a defrosting mode;

[0014] Figure 3 It is a first process schematic diagram of a control method according to some embodiments of the present application;

[0015] Figure 4 It is a second process schematic diagram of a control method according to some embodiments of the present application;

[0016] Figure 5 It is a third process schematic diagram of a control method according to some embodiments of the present application;

[0017] Figure 6 It is a module schematic diagram of a control device of an air conditioning system according to some embodiments of the present application. Detailed Embodiments

[0018] The following details the embodiments of the present application. The examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals denote the same or similar elements or elements with the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the embodiments of the present application and should not be construed as a limitation to the embodiments of the present application.

[0019] In the present application, unless otherwise clearly specified and defined, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on" the second feature may be that the first feature is directly above or obliquely above the second feature, or simply means that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "under" the second feature may be that the first feature is directly below or obliquely below the second feature, or simply means that the first feature has a lower horizontal height than the second feature.

[0020] In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the number of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one feature. In the description of the present application, the meaning of "a plurality" is at least two, such as two, three, unless otherwise clearly and specifically defined.

[0021] The following first introduces the application scenarios of the control method of the air conditioning system of the present application. The application scenarios include the air conditioning system 100. The air conditioning system 100 includes a compressor 10 and at least one radiation component 20.

[0022] Among them, the air conditioning system 100 refers to a system composed of various components for regulating temperature. It controls the state of air through a series of complex mechanical and electronic components so that the target object to be heated or cooled (such as the station where the radiation component 20 is located) always remains near the set target temperature.

[0023] Among them, the compressor 10 is the heart of the air conditioner. The compressor 10 includes an exhaust port 11 and a suction port 12, and is responsible for compressing the refrigerant entering from the suction port 12 from a low-pressure gas into a high-temperature and high-pressure gas and discharging it from the exhaust port 11.

[0024] At least one radiation component 20 is arranged at different positions and is connected in parallel between the exhaust port 11 and the suction port 12. The radiation component 20 includes a first valve 211, a second valve 212 and a radiation module 22; the radiation module 22 includes a first port 221 and a second port 222. When the air conditioning system 100 operates in the heating mode, the first valve 211 is located between the first port 221 and the exhaust port 11, and the second valve 212 is located between the second port 222 and the suction port 12. That is to say, the first valve 211 is used to control the amount of refrigerant flowing from the exhaust port 11 into the radiation module 22, and the second valve 212 is used to control the amount of refrigerant flowing into the suction port 12.

[0025] Among them, the first valve 211 and the second valve 212 can be solenoid valves, electronic expansion valves and other first valves 211, 212 that can adjust the opening degree. A solenoid valve is a type of first valve 211, 212 that uses electromagnetic force to control the on / off of fluid. It is widely used in various industrial, commercial and household systems, such as water treatment, heating, ventilation and air conditioning, refrigeration systems, automation equipment, etc. The solenoid valve drives the opening and closing of the first valve 211, 212 through the magnetic force generated by the electromagnet, so as to achieve precise control of fluid flow. An electronic expansion valve (Electronic Expansion Valve, EEV) is an advanced flow control device used in refrigeration and air conditioning systems 100. Compared with the traditional thermostatic expansion valve (Thermostatic Expansion Valve, TXV), the electronic expansion valve has higher control accuracy, faster response speed and a wider adjustment range. The electronic expansion valve precisely controls the opening degree of the first valve 211, 212 through a stepper motor or a servo motor, so as to adjust the refrigerant flow rate.

[0026] Among them, the radiation module 22 can be a device that transfers heat through radiation. For example, the radiation module 22 can be a radiant panel. The radiant panels in the air conditioning system 100 are usually used to provide comfortable indoor temperature control. The radiant panels can be used in both heating and cooling modes, depending on the system design and application requirements. The working principle of the radiant panel is based on the basic physical phenomenon of thermal radiation. Thermal radiation refers to the transfer of heat from an object to the surrounding environment in the form of electromagnetic waves. The radiant panel changes its temperature by heating or cooling its surface, and thus transfers heat to the objects and human bodies in the room through radiation.

[0027] Specifically, the air conditioning system 100 is provided with at least one radiation component 20, and each radiation component 20 is separately provided with a first valve 211, a second valve 212, and a radiation module 22. When the air conditioning system 100 operates in the heating mode, the first valve 211 is located between the first port 221 and the exhaust port 11, and the second valve 212 is located between the second port 222 and the suction port 12, so as to achieve independent heating control of each radiation component 20 through the first valve 211 and the second valve 212.

[0028] Different radiation components 20 can be arranged at various positions with heating requirements (such as different radiation components 20 are respectively arranged at different workstations), and the opening degrees of the first valve 211 and the second valve 212 of the radiation component 20 corresponding to each position can be adaptively adjusted (such as the larger the opening degree, the higher the heating temperature and the lower the cooling temperature), so that each radiation component 20 can respectively meet the heating or cooling requirements of each position and meet the personalized temperature requirements of different positions.

[0029] Moreover, when the first valve 211 and the second valve 212 are both closed, the refrigerant in the radiation module 22 cannot flow, and the refrigerant can be stored in the radiation module 22, so as to achieve rapid heating during heating.

[0030] In some embodiments, the air conditioning system 100 further includes:

[0031] Outdoor heat exchanger 30: In the outdoor unit, the condenser receives the high-temperature and high-pressure gas from the compressor 10 and dissipates its heat to the external air through the radiator fins, so that the refrigerant is cooled and liquefied. Among them, the outdoor heat exchanger 30 is generally equipped with a fan to promote air flow and help the heat exchange process to be more efficient.

[0032] Control system: It includes various sensors and a controller 40. The controller 40 obtains different types of status information of the air-conditioning system 100 based on the sensors, and thus controls the air-conditioning system 100 based on the status information to ensure the performance of the air-conditioning system 100. For example, through a thermostat and other sensors, the required temperature is set, and the operating status of the air conditioner is automatically adjusted according to the actual situation so that the temperature is always near the set temperature.

[0033] In some embodiments, the air-conditioning system 100 further includes an indoor heat exchanger 50. The indoor heat exchanger 50 is disposed between the exhaust port 11 and the radiation assembly 20; or, the indoor heat exchanger 50 is disposed between the return air port 12 and the radiation assembly 20.

[0034] The indoor heat exchanger 50 (Indoor Heat Exchanger) is one of the key components in the air-conditioning system 100 and is used for heat exchange in the indoor environment. These heat exchangers can achieve heat transfer between air and refrigerant or water, thereby adjusting the indoor temperature and humidity.

[0035] It can be understood that the indoor heat exchanger 50 does not necessarily have to be installed indoors. It can be in any environment where heat exchange is required, such as an open-air stadium, and the indoor heat exchanger 50 can also be installed to cool or heat the stadium.

[0036] Specifically, when the air-conditioning system 100 is operating in the heating mode, the indoor heat exchanger 50 can be disposed between the exhaust port 11 and the radiation assembly 20. In this way, the high-temperature and high-pressure gaseous refrigerant at the exhaust port 11 will first pass through the indoor heat exchanger 50 for heat exchange, heating the entire indoor space, raising the temperature of the entire indoor area, and ensuring the basic temperature of the entire indoor area. After that, on this basis, each radiation assembly 20 conducts personalized heating based on the temperature requirements at each location. For example, when the temperature requirement at a location is relatively low, the opening degrees of the first valve 211 and the second valve 212 of the corresponding radiation assembly 20 are relatively small; while when the temperature requirement at a location is relatively high, the opening degrees of the first valve 211 and the second valve 212 of the corresponding radiation assembly 20 are larger.

[0037] Or, the indoor heat exchanger 50 can be disposed between the return air port 12 and the radiation assembly 20. In this way, the high-temperature and high-pressure gaseous refrigerant at the exhaust port 11 will first pass through each radiation assembly 20, thus giving priority to ensuring the temperature requirements at the locations where each radiation assembly 20 is located. After that, the refrigerant then enters the indoor heat exchanger 50. Under the condition of meeting the temperature requirements at the locations where each radiation assembly 20 is located, the indoor heat exchanger 50 can raise the overall temperature of the indoor space.

[0038] In this way, by combining the indoor heat exchanger 50 (convective terminal) with multiple radiation components 20 (radiative terminals), global temperature control and local temperature control can be achieved. The convective terminal is used to achieve global heating, and accurate control of the heat exchange capacity can be realized to adapt to different working conditions; the radiative terminal can be used to achieve local heating. The radiation component 20 for local heating has low noise and no blowing feeling, and the comfort of temperature control is relatively high.

[0039] In some embodiments, refer to Figure 2 , the radiation module 22 includes a first port 221 and a second port 222. The radiation component 20 further includes a one-way valve 23. When the air conditioning system 100 operates in the cooling mode, one end of the one-way valve 23 is connected between the first valve 211 and the suction port 12, and the other end of the one-way valve 23 is connected between the second valve 212 and the discharge port 11.

[0040] Among them, the one-way valve 23 (also known as the check valve or non-return valve) is a type of valve that only allows fluid to flow in one direction. Its main function is to prevent the reverse flow of fluid, thereby protecting the equipment and pipelines in the system from damage. The one-way valve 23 is widely used in various fluid control systems, including water treatment, petrochemical, HVAC, refrigeration systems, etc.

[0041] The basic working principle of the one-way valve 23 is to use the internal mechanical structure to control the flow direction of the fluid. When the fluid enters from the inlet, the valve opens to allow the fluid to pass through; when the fluid attempts to flow backward from the outlet, the valve closes to prevent the fluid from passing through.

[0042] Specifically, since the air conditioning system 100 also needs to operate in the cooling mode, and in the cooling mode, the refrigerant at the discharge port 11 generally does not pass through the radiation module 22. Therefore, in order to ensure that the refrigerant can flow out from the discharge port 11, pass through the outdoor heat exchanger 30 and the indoor heat exchanger 50 in sequence, and then flow into the suction port 12 to realize the refrigeration cycle. The air conditioning system 100 is provided with a one-way valve 23, and the conduction direction of the one-way valve 23 is from the discharge port 11 to the suction port 12 in the cooling mode. At this time, the refrigerant flowing out of the indoor heat exchanger 50 can flow in from the end connected to the second valve 212, and then flow out from the other end connected to the first valve 211, and then return to the suction port 12. In the heating mode, however, the refrigerant cannot flow into the one-way valve 23, avoiding the refrigerant not flowing through the radiation module 22.

[0043] In some embodiments, refer to Figure 1 and Figure 2, the air conditioning system 100 further includes a four-way valve 80. The four-way valve 80 can adaptively adjust the connection relationship of the pipelines based on the working modes of the air conditioner (such as the cooling mode and the heating mode), so as to achieve cooling or heating. In the heating mode, the four-way valve 80 can selectively connect the exhaust port 11 and the first valve 211, the second valve 212, and the suction port 12 and the outdoor heat exchanger 30; or, in the cooling mode, the four-way valve 80 can selectively connect the exhaust port 11 of the compressor 10 and the outdoor heat exchanger 30, and the suction port 12 and the first valve 211, the second valve 212.

[0044] Please refer to Figure 1 and Figure 3 , the control method of the air conditioning system 100 in the embodiment of the present application is applied to the air conditioning system 100 in any of the above embodiments. The method includes:

[0045] Step 011: When the air conditioning system 100 receives a shutdown instruction, perform a refrigerant transfer operation. The refrigerant transfer operation includes controlling the air conditioning system 100 to operate in the heating mode, opening the first valve 211 and closing the second valve 212;

[0046] Step 012: After completing the refrigerant transfer operation, control the compressor 10 to stop running.

[0047] Specifically, when the air conditioning system 100 shuts down, the compressor 10 will not be immediately controlled to stop running. Instead, a refrigerant transfer operation will be performed first to transfer the refrigerant into the radiation module 22. The refrigerant transfer operation is that the air conditioning system 100 operates in the heating mode, the first valve 211 is opened and the second valve 212 is closed. At this time, the refrigerant at the exhaust port 11 will continuously flow into the radiation module 22 through the first valve 211 under the action of the compressor 10. Since the second valve 212 is closed, the refrigerant cannot flow into the suction port 12. As the air conditioning system 100 operates, the refrigerant is continuously transferred into the radiation module 22.

[0048] Optionally, the air conditioning system 100 further includes a third valve 60 and a throttle valve 70. When the air conditioning system 100 operates in the heating mode, the third valve 60 is located between the exhaust port 11 and the first valve 211, and the throttle valve 70 is located between the suction port 12 and the second valve 212. The refrigerant transfer operation further includes opening the third valve 60 and closing the throttle valve 70.

[0049] Among them, the third valve 60 is located between the exhaust port 11 and the first valve 211. The third valve 60 can achieve the function of high and low pressure isolation, separating the high pressure side (such as one side of the third valve 60) and the low pressure side (such as the suction port 12 side of the compressor 10) so that the refrigerant cannot flow back from the high pressure side to the low pressure side.

[0050] Optionally, the third valve 60 can be a solenoid valve, an electronic expansion valve, etc.

[0051] Among them, the throttle valve 70 (Thermostatic Expansion Valve, TXV or Electronic Expansion Valve, EEV) is a key component in the refrigeration system. Its main function is to regulate the flow of refrigerant from the high-pressure side to the low-pressure side. By controlling the refrigerant flow, the throttle valve ensures that the evaporator operates under optimal conditions, thereby improving the efficiency and performance of the system.

[0052] The air-conditioning system 100 is provided with a throttle valve 70 between the indoor heat exchanger 50 and the outdoor heat exchanger 30. The throttle valve 70 can adjust the refrigerant flow, so that the subcooling degrees of the indoor heat exchanger 50 and the outdoor heat exchanger 30 are always maintained within an appropriate range, improving the heat exchange efficiency of the indoor heat exchanger and the outdoor heat exchanger 30, and thus improving the heating and cooling efficiency and performance of the air-conditioning system 100.

[0053] Moreover, the third valve 60 is opened during the refrigerant transfer operation, enabling the refrigerant to be transferred to the radiation module 22. The throttle valve 70 is closed during the refrigerant transfer operation, which can prevent the refrigerant in the indoor heat exchanger between the second valve 212 and the throttle valve 70 from being transferred to the radiation module 22. Thus, during subsequent heating, the refrigerant amount in the indoor heat exchanger is ensured to improve the heating efficiency of the indoor heat exchanger.

[0054] Optionally, the compressor 10 is a compressor 10 with a high-low pressure isolation function. When the compressor 10 stops running, the compressor 10 performs high-low pressure isolation. The air-conditioning system 100 further includes a throttle valve 70, which is located between the suction port 12 and the second valve 212. The refrigerant transfer operation further includes closing the throttle valve 70.

[0055] In this way, since the compressor 10 already has a high-low pressure isolation function, refrigerant backflow can be prevented, and at this time, there is no need to set the third valve 60.

[0056] After the refrigerant transfer is completed, then control the compressor 10 to stop running. At this time, the refrigerant is stored in the radiation module 22. When the air-conditioning system 100 is started again in the heating mode, since a large amount of refrigerant is stored in the radiation module 22, the pressure difference of the air-conditioning system 100 can be quickly established. After the compressor 10 runs, the radiation module 22 can quickly heat up to meet the user's demand for quick heating.

[0057] In addition, after the refrigerant transfer is completed, in order to prevent the refrigerant in the radiation module 22 from flowing back and pouring into the compressor 10, the third valve 60 also needs to be closed. At the same time, the first valve 211 can also be optionally closed to store the refrigerant in the radiation module 22 as much as possible.

[0058] Optionally, when the pressure at the suction port 12 of the compressor 10 is less than a preset pressure, it is determined that the refrigerant transfer operation is completed; and / or, when the compressor 10 operates for a first preset duration, it is determined that the refrigerant transfer operation is completed.

[0059] That is to say, by detecting the pressure at the suction port 12 of the compressor 10, the amount of refrigerant between the second valve 212 and the suction port 12 can be determined. As the amount of refrigerant decreases, the pressure at the suction port 12 increases. Therefore, when the pressure at the suction port 12 is less than the preset pressure (empirical value), it can be determined that there is basically no refrigerant between the second valve 212 and the suction port 12. At this time, it can be determined that most of the refrigerant has been transferred to each radiation module 22. Or, based on the amount of refrigerant that each radiation module 22 can hold, the preset pressure is determined to ensure that each radiation module 22 is filled with refrigerant as much as possible.

[0060] Or, through pre-calibration, the first preset duration that the compressor 10 needs to run when each radiation module 22 is filled with refrigerant is determined. When performing the refrigerant transfer operation, it is only necessary to determine whether the compressor 10 has operated for the first preset duration after the second valve 212 is closed to determine that the refrigerant transfer is completed.

[0061] The air-conditioning system 100 of the present application is provided with at least one radiation component 20, and each radiation component 20 is separately provided with a first valve 211, a second valve 212, and a radiation module 22. When the air-conditioning system 100 operates in the heating mode, the first valve 211 is used to control the amount of refrigerant flowing from the exhaust port 11 into the radiation module 22, and the second valve 212 is used to control the amount of refrigerant flowing into the suction port 12; when the air-conditioning system 100 shuts down, the compressor 10 is not immediately controlled to stop running, but first a refrigerant transfer operation is performed to transfer the refrigerant into the radiation module 22. The refrigerant transfer operation is that the air-conditioning system 100 operates in the heating mode, the first valve 211 is opened and the second valve 212 is closed. At this time, the refrigerant at the exhaust port 11 will continuously flow into the radiation module 22 from the first valve 211. Since the second valve 212 is closed, the refrigerant cannot flow into the suction port 12. As the air-conditioning system 100 operates, the refrigerant is continuously transferred to the radiation module 22. After the refrigerant transfer is completed, the compressor 10 is then controlled to stop running, and at this time the refrigerant is stored in the radiation module 22. When the air-conditioning system 100 starts again in the heating mode, since a large amount of refrigerant is stored in the radiation module 22, the pressure difference of the air-conditioning system 100 can be quickly established. After the compressor 10 operates, the radiation module 22 can quickly heat up to meet the user's demand for quick heating.

[0062] Moreover, compared with many products that use electric auxiliary heating during the preheating stage to improve the user experience in actual applications, and since electric auxiliary heating has low energy efficiency compared to heat pump systems and using electric auxiliary heating will cause energy waste, the present application can achieve rapid heating without setting up an electric auxiliary heating system, with lower costs and higher energy efficiency.

[0063] In some embodiments, referring to Figure 2 and Figure 4 , the control method further includes:

[0064] Step 013: When the air conditioning system 100 receives a heating instruction, perform local heating operation on the target radiation component. The local heating operation includes opening the first valve 211 of the target radiation component, closing the second valve 212 of the target radiation component, closing the first valve 211 and the second valve 212 of other radiation components 20 outside the target radiation component. The target radiation component includes one or more radiation components 20 among the plurality of radiation components 20;

[0065] Step 014: When the local heating operation is completed, perform global heating operation. The global heating operation includes opening the second valve 212 of the target radiation component.

[0066] Specifically, the air conditioning system 100 of the present application can meet personalized heating or cooling requirements, and achieve local heating at a specific location and global heating in all areas.

[0067] When receiving a heating instruction (such as clicking the heating button on the remote control of the air conditioner, or clicking the heating button or turning on the heating function in the application program of the electronic device connected to the air conditioner) to perform heating, first obtain the target radiation component with heating requirements. The target radiation component can be one or more of each radiation component 20, so as to perform local heating operation on the target radiation component specifically.

[0068] The local heating operation specifically includes opening the first valve 211 of the target radiation component, closing the second valve 212 of the target radiation component, and closing the first valve 211 and the second valve 212 of other radiation components 20 outside the target radiation component. That is to say, it allows the target radiation component to circulate refrigerant, while not allowing non-target radiation components to circulate refrigerant.

[0069] And since a large amount of refrigerant has been transferred in the radiation module 22 before shutdown, the target radiation component that can circulate refrigerant can quickly establish a pressure difference to achieve rapid heating, thus meeting the local rapid heating requirements of each target radiation component.

[0070] When the local rapid heating requirement of the target radiation component is met, global heating operation can be carried out at this time to increase the temperature of the entire scene. Among them, the global heating operation includes opening the second valve 212 of the target radiation component.

[0071] Optionally, when the temperature of any target radiation component is greater than the corresponding set temperature, or when the temperatures of all target radiation components are greater than the corresponding set temperatures, it is determined that the local heating operation is completed; and / or when the compressor 10 operates for a second preset duration, it is determined that the local heating operation is completed.

[0072] Among them, when the temperature of the target radiation component is greater than the preset temperature, it can be basically determined that the temperature requirement for local heating is met. The second preset duration can be the operating duration required by the compressor 10 when the temperature of the target radiation component reaches the preset temperature. When the operating duration is greater than the second preset duration, it can be determined that the target radiation component basically reaches the preset temperature and can meet the temperature requirement for local heating.

[0073] To implement the global heating operation, it is necessary to make the refrigerant flow through the indoor heat exchanger. At this time, the second valves 212 of each target radiation component can be opened to make the refrigerant flow into the indoor heat exchanger, and the indoor heat exchanger realizes global heating.

[0074] Optionally, when opening the second valve 212 of the target radiation component, it can be slowly opened to avoid the rapid loss of the refrigerant in the radiation module 22 of the target radiation component, which affects the local heating effect of the target radiation component. For example, the second valve 212 can be opened based on a preset step size (such as the opening degree is from 0 to 100 degrees, and the preset step size can be 1 degree, 2 degrees, 5 degrees, etc.) per second.

[0075] Optionally, the second valves 212 of other radiation components 20 outside the target radiation component can also be opened, so that the refrigerant in the radiation module 22 flows into the indoor heat exchanger under the action of high pressure in the radiation module 22 (the high pressure formed by the accumulation of more refrigerant in the radiation module 22), increasing the amount of refrigerant for the heating cycle, thereby improving the heating efficiency.

[0076] Optionally, the local heating operation further includes opening the third valve 60 and closing the throttle valve 70, and the global heating operation further includes opening the throttle valve 70.

[0077] In this way, by opening the third valve 60 and closing the throttle valve 70, a pressure difference is quickly established between the exhaust port 11 of the compressor 10 and the radiation module 22 of the target radiation component, further improving the local heating efficiency of the radiation module 22 of the target radiation component. By opening the throttle valve 70, during global heating, it can ensure that the compressor 10 realizes the heating cycle, continuously generates high-temperature and high-pressure gas, and realizes the local heating of the target radiation component and the global heating of the indoor heat exchanger.

[0078] Optionally, when performing global heating, in order to avoid rapid loss of refrigerant and affect the local heating effect of the target radiation component, the throttle valve 70 can also be slowly opened, for example, it can be opened based on a preset step (such as the opening degree is from 0 to 100 degrees, and the preset step can be 1 degree, 2 degrees, 5 degrees, etc.) per second to open the throttle valve 70.

[0079] In one example, please refer to Figure 1 again. The radiation components 20 include three, namely radiation component 20A, radiation component 20B, and radiation component 20C, and the radiation components 20A, 20B, and 20C are respectively arranged at station 1, station 2, and station 3.

[0080] Taking the example that stations 1 and 2 have heating requirements, station 3 has no heating requirement, the set temperature of station 1 is 30 degrees, and the set temperature of station 2 is 25 degrees, when the air conditioning system 100 is heating, it can close the first valve 211 and the second valve 212 in the radiation component 20C, adjust the opening degrees of the first valve 211 and the second valve 212 of the radiation component 20A to the first opening degree, and adjust the opening degrees of the first valve 211 and the second valve 212 of the radiation component 20B to the second opening degree, where the first opening degree is greater than the second opening degree.

[0081] Optionally, the opening degrees of the first valve 211 and the second valve 212 can also be adjusted manually.

[0082] In this way, since the radiation module 22 has transferred a large amount of refrigerant before shutdown, after starting heating, the pressure difference can be quickly established to achieve local and rapid heating of the target radiation component. And adaptively adjusting the opening degree of the valve can make the area where station 1 is located have a higher heating temperature, the area where station 2 is located have a lower heating temperature, while station 3 does not heat, meeting the individual heating temperature requirements of stations 1, 2, and 3 respectively.

[0083] Optionally, the first valves 211 and the second valves 212 of each target radiation component (i.e., radiation components 20A and 20B) can also be adjusted to the maximum first, heat each target radiation component to the corresponding set temperature in the shortest time, and then adaptively adjust the opening degrees of the first valves 211 and the second valves 212 of each target radiation component based on the set temperature corresponding to each target radiation component. In this way, while ensuring local and rapid heating, the individual temperature requirements of different radiation components 20 are met.

[0084] In some embodiments, please refer to Figure 5 again. The control method further includes:

[0085] Step 015: When a defrosting instruction is received, perform a defrosting operation, which includes controlling the air conditioning system 100 to operate in a cooling mode and closing the first valve 211 and the second valve 212.

[0086] Specifically, the air conditioning system 100 can also operate in a defrosting mode to defrost the indoor heat exchanger and the outdoor heat exchanger. When performing the defrosting operation, in order to enable the radiation module 22 to still maintain heating, the first valve 211 and the second valve 212 can be both closed, so that the refrigerant in the radiation module 22 can continue to maintain the heating effect for a period of time.

[0087] Therefore, in addition to controlling the air conditioning system 100 to operate in a cooling mode to achieve defrosting, the defrosting operation closes the first valve 211 and the second valve 212 to maintain the radiation module 22 to continue heating.

[0088] In some embodiments, the global heating operation further includes opening the first valve 211 of other radiation components 20 outside the target radiation component and adjusting the opening degree of the second valve 212 of other radiation components 20 outside the target radiation component to a preset oil return opening degree.

[0089] Specifically, there is generally oil in the pipeline of the air conditioning system 100 to ensure lubrication. In order to avoid the inability to return oil when the first valve 211 and the second valve 212 of each radiation component 20 are completely closed, which affects subsequent operation, when performing the global heating operation, the first valve 211 of other radiation components 20 outside the target radiation component can be opened, and the second valve 212 of other radiation components 20 outside the target radiation component can be adjusted to a smaller opening degree, that is, the preset oil return opening degree (such as the opening degree is from 0 to 100, and the preset oil return opening degrees are 1, 3, 5, 10, etc.).

[0090] In some embodiments, please refer to again Figure 1 to determine the operating frequency of the compressor 10 and the fan speed of the indoor heat exchanger based on the number of radiation components 20 that are not working.

[0091] Specifically, the more radiation components 20 with heating or cooling requirements, in order to ensure that different cooling and heating requirements are met, it is necessary to adaptively adjust the operating frequency of the compressor 10 and the fan speed of the indoor heat exchanger.

[0092] It can be understood that the higher the operating frequency of the compressor 10, the better the global and local heating or cooling effects, and the faster the fan speed of the indoor heat exchanger, the better the global heating or cooling effects.

[0093] The operating conditions of the compressor 10 and the fan of the indoor heat exchanger can be controlled in multiple cases. The rated frequency of the compressor 10 is f, and the rated speed of the fan of the indoor heat exchanger is n:

[0094] (1) All components of the air conditioning system 100 are not started, and all radiation components 20 and the indoor heat exchanger start heating. At this time, the compressor 10 operates at a frequency of 1.2f, and the fan of the indoor heat exchanger operates at a rotational speed of n. At this time, priority is given to ensuring local heating. The frequency of the compressor 10 is relatively high, and the fan rotational speed only needs to maintain the rated rotational speed.

[0095] (2) All components of the air conditioning system 100 are not started, and only one radiation component 20 and the indoor heat exchanger start heating. At this time, the compressor 10 operates at a frequency of 0.8f, and the fan of the indoor heat exchanger operates at a rotational speed of 1.2n. At this time, the local heating demand is low, and the global heating effect can be improved by increasing the fan rotational speed.

[0096] (3) The indoor heat exchanger and only one radiation component 20 are turned on, and one more radiation component 20 is added. At this time, the outdoor unit compressor 10 operates at a frequency of f, and the indoor heat exchanger fan operates at a rotational speed of n. Since it is already running normally, at this time, the compressor 10 and the fan only need to operate with the rated parameters.

[0097] In some embodiments, please refer to again Figure 1 , the opening degree of the throttle valve 70 can be adjusted so that the degree of subcooling of the indoor heat exchanger is within a preset subcooling degree range.

[0098] Specifically, in order to improve the heat exchange efficiency of the indoor heat exchanger 50 and enhance the performance of the air conditioning system 100. The degree of subcooling of the indoor heat exchanger 50 can be obtained in real time (the calculation of the degree of subcooling can be achieved by obtaining the refrigerant temperature at the outlet of the indoor heat exchanger 50), and then by adjusting the opening degree of the third valve 60, the amount of refrigerant flowing into the indoor heat exchanger 50 through the third valve 60 can be adjusted, so that the degree of subcooling is within the preset subcooling degree range. That is to say, the indoor heat exchanger 50 is always in a preset subcooling degree range with relatively high heat exchange efficiency (such as the preset subcooling degree range is the interval [5 degrees Celsius, 6 degrees Celsius]).

[0099] For example, the preset subcooling degree range includes a first preset subcooling degree and a second preset subcooling degree. For example, the preset subcooling degree range is the interval [the first preset subcooling degree, the second preset subcooling degree]. When the degree of subcooling of the indoor heat exchanger 50 is less than the first preset subcooling degree, the opening degree of the third valve 60 is increased to increase the degree of subcooling of the indoor heat exchanger 50; when the degree of subcooling is greater than the second preset subcooling degree, the opening degree of the third valve 60 is decreased to reduce the degree of subcooling of the indoor heat exchanger 50.

[0100] In some embodiments, in the case where there is no target radiation component or the air conditioning system 100 is operating in the cooling mode, the opening degrees of the first valve 211 and the second valve 212 of each radiation component 20 are adjusted to 0.

[0101] Specifically, when there is no target radiation component, it indicates that there is no heating demand at the locations where the radiation components 20 are located. At this time, the opening degrees of the first valves 211 and the second valves 212 of the radiation components 20 can be adjusted to 0 to prevent the refrigerant from flowing into the radiation components 20. Or, when the air-conditioning system 100 operates in the cooling mode, it is also necessary to prevent the refrigerant from flowing through the radiation components 20 to achieve global cooling. Therefore, the opening degrees of the first valves 211 and the second valves 212 of the radiation components 20 can also be adjusted to 0.

[0102] Of course, if local cooling is to be performed, the opening degrees of the first valve 211 and the second valve 212 of the target radiation component can also be adjusted based on the set temperature corresponding to each target radiation component in the cooling mode to meet the personalized local cooling demand.

[0103] To facilitate better implementation of the control method of the embodiments of the present application, the embodiments of the present application further provide a control device 300. Please refer to Figure 6 , Figure 6 which is a schematic structural diagram of the control device 300 provided by the embodiments of the present application. Among them, the control device 300 may include:

[0104] A refrigerant transfer module 301, configured to perform a refrigerant transfer operation when the air-conditioning system 100 receives a shutdown instruction. The refrigerant transfer operation includes controlling the air-conditioning system 100 to operate in a heating mode, opening the first valve 211, and closing the second valve 212;

[0105] A control module 302, configured to control the compressor 10 to stop running after the refrigerant transfer operation is completed.

[0106] Each module in the above control device can be implemented in whole or in part by software, hardware, and their combination. Each of the above modules can be embedded in or independent of the processor in the computer device in the form of hardware, or stored in the memory of the computer device in the form of software, so that the processor can call and execute the operations corresponding to each of the above modules.

[0107] The embodiments of the present application further provide a computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, the steps of the control method of any of the above embodiments are implemented. For the sake of brevity, it will not be elaborated here.

[0108] It can be understood that a computer program includes computer program code. The computer program code can be in the form of source code, object code, executable files, or some intermediate forms, etc. The computer-readable storage medium can include: any entity or device capable of carrying the computer program code, recording medium, USB flash drive, mobile hard disk, magnetic disk, optical disk, computer memory, read-only memory (ROM), random access memory (RAM), and software distribution media, etc.

[0109] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "schematic embodiments", "examples", "specific examples", or "some examples", etc. means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0110] Any process or method description shown in the flowchart or described in other ways herein can be understood as representing a module, segment, or part of code including one or more executable instructions for implementing a specific logical function or process, and the scope of the preferred embodiments of the present application includes additional implementations, where the functions can be executed in a manner that is not in the order shown or discussed, including in a substantially simultaneous manner according to the functions involved or in the reverse order, which should be understood by those skilled in the art to which the embodiments of the present application belong.

[0111] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present application. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present application.

Claims

1. A control method for an air conditioning system, characterized in that, The air conditioning system includes a compressor and at least one radiation component. The compressor includes an exhaust port and a suction port; the radiation component is arranged between the exhaust port and the suction port; the radiation component includes a first valve, a second valve and a radiation module. The radiation module includes a first port and a second port. When the air conditioning system operates in the heating mode, the first valve is located between the first port and the exhaust port, and the second valve is located between the second port and the suction port; the method further includes: When a shutdown instruction is received by the air conditioning system, a refrigerant transfer operation is performed. The refrigerant transfer operation includes controlling the air conditioning system to operate in the heating mode, opening the first valve and closing the second valve; When the refrigerant transfer operation is completed, control the compressor to stop running.

2. The control method of the air conditioning system according to claim 1, characterized in that, The air conditioning system further includes a third valve and a throttle valve. When the air conditioning system operates in the heating mode, the third valve is located between the exhaust port and the first valve, and the throttle valve is located between the suction port and the second valve. The refrigerant transfer operation further includes opening the third valve and closing the throttle valve; or, The compressor is a compressor with a high-low pressure isolation function. When the compressor stops running, the compressor performs high-low pressure isolation. The air conditioning system further includes a throttle valve, and the throttle valve is located between the suction port and the second valve. The refrigerant transfer operation further includes closing the throttle valve.

3. The control method of the air conditioning system according to claim 2, characterized in that, The air conditioning system further includes an indoor heat exchanger, and the indoor heat exchanger is located between the exhaust port and the radiation component; or, the indoor heat exchanger is located between the throttle valve and the radiation component.

4. The control method of the air conditioning system according to claim 2, characterized in that, It further includes: When the refrigerant transfer operation is completed, control the third valve to close.

5. The control method of the air conditioning system according to claim 1 or 4, characterized in that, It further includes: When the pressure at the suction port of the compressor is less than a preset pressure, it is determined that the refrigerant transfer operation is completed; And / or, when the compressor operates for a first preset duration, it is determined that the refrigerant transfer operation is completed.

6. The control method of the air conditioning system according to claim 1, characterized in that, There are multiple radiation components, and the multiple radiation components are arranged in parallel between the exhaust port and the suction port. The method further includes: When a heating instruction is received by the air conditioning system, a local heating operation is performed on a target radiation component. The local heating operation includes opening the first valve of the target radiation component, closing the second valve of the target radiation component, closing the first valve and the second valve of other radiation components except the target radiation component. The target radiation component includes one or more of the multiple radiation components; When the local heating operation is completed, a global heating operation is performed. The global heating operation includes opening the second valve of the target radiation component.

7. The control method of the air conditioning system according to claim 6, wherein, The air conditioning system further includes a third valve and a throttle valve. When the air conditioning system operates in the heating mode, the third valve is located between the exhaust port and the first valve, and the throttle valve is located between the suction port and the second valve. The local heating operation further includes opening the third valve and closing the throttle valve, and the global heating operation further includes opening the throttle valve.

8. The control method of the air conditioning system according to claim 7, characterized in that, The opening of the throttle valve includes: Increasing the opening degree of the second valve by a preset step length every second preset time period.

9. The control method of the air-conditioning system according to any one of claims 6-8, characterized in that, It further includes: Determining that the local heating operation is completed when the temperature of any one of the target radiation components is greater than the corresponding set temperature, or when the temperatures of all the target radiation components are greater than the corresponding set temperatures; And / or, determining that the local heating operation is completed when the compressor operates for a second preset time period.

10. The control method of the air conditioning system according to any one of claims 6-8, characterized in that The radiation component further includes a check valve. When the air conditioning system operates in the cooling mode, one end of the check valve is connected between the first valve and the suction port, and the other end of the check valve is connected between the second valve and the exhaust port. It further includes: Performing a defrosting operation when a defrosting instruction is received. The defrosting operation includes controlling the air conditioning system to operate in the cooling mode and closing the first valve and the second valve.

11. The control method of the air conditioning system according to claim 6, wherein, The global heating operation further includes opening the first valves of the other radiation components except the target radiation component, and adjusting the opening degrees of the second valves of the other radiation components except the target radiation component to a preset oil return opening degree.

12. The control method of the air conditioning system according to claim 6, wherein, The air conditioning system further includes an indoor heat exchanger. The method further includes: Determining the operating frequency of the compressor and the fan speed of the indoor heat exchanger based on the number of the radiation components that are not operating.

13. An air conditioning system, characterized in that, It includes a compressor, at least one radiation component, and a controller. The compressor includes an exhaust port and a suction port; the radiation component is arranged between the exhaust port and the suction port; the radiation component includes a first valve, a second valve, and a radiation module. The radiation module includes a first port and a second port. When the air conditioning system operates in the heating mode, the first valve is located between the first port and the exhaust port, and the second valve is located between the second port and the suction port; the controller is configured to execute the control method according to any one of claims 1-12.

14. A non-volatile computer-readable storage medium for a computer program, characterized in that, When the computer program is executed by one or more processors, the control method according to any one of claims 1-12 is implemented.

Images