Air conditioner control method, device and storage medium

Abstract

The present application discloses a control method, device and storage medium for an air conditioner. The present application relates to the field of heat exchange equipment control technology. The control method for the air conditioner includes: determining whether a first threshold condition is met based on the temperature of the outdoor heat exchanger coil, and determining whether a second threshold condition is met based on the compressor exhaust temperature; if the first threshold condition and / or the second threshold condition are met, determining an indoor correction temperature based on the indoor temperature; if the indoor correction temperature meets the temperature condition, controlling the stop valve to adjust to the initial opening. The technical defects of the related art that the refrigeration capacity of the refrigeration system needs to be sacrificed and the refrigeration efficiency of the system is reduced are overcome, and the technical effects of having less impact on the refrigeration capacity of the refrigeration system, reducing the compressor exhaust pressure and temperature, and significantly improving the energy efficiency and reliability of high-temperature refrigeration are achieved.

Description

Technical Field

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

[0002] The operation of air conditioners in high temperature environments is limited mainly because high outdoor temperatures will exceed the exhaust pressure limit of the compressor, increasing the energy consumption of air conditioners. At the same time, the pressure of the refrigerant increases in high temperature environments, increasing the risk of refrigerant leakage. To solve the above problems, the relevant technologies mainly adopt solutions such as increasing the heat exchange area or improving the heat exchange efficiency of the outdoor unit to reduce the condensing temperature, or cooling the compressor by throttling the refrigerant internally or precooling or overcooling the outdoor heat exchanger.

[0003] However, the above solution requires a large cost and will sacrifice the cooling capacity of the refrigeration system and reduce the cooling efficiency of the system. Summary of the invention

[0004] The main purpose of the present application is to provide a control method, device and storage medium for an air conditioner, aiming to solve the technical problem of poor cooling efficiency of the air conditioner under high temperature environment conditions.

[0005] To achieve the above-mentioned purpose, the present application provides a control method for an air conditioner, the air conditioner comprising a compressor, a four-way valve, an outdoor heat exchanger and an indoor heat exchanger connected in sequence, the compressor comprising a compression chamber and a cooling channel isolated from each other, the exhaust port and the air intake port of the compression chamber are both connected to the four-way valve, the first side of the outdoor heat exchanger is connected to the four-way valve, the other side of the outdoor heat exchanger is provided with a first branch, the first branch is connected to the stop valve, the cooling channel and the air intake port in sequence, the control method of the air conditioner comprises:

[0006] determining whether a first threshold condition is satisfied based on an outdoor heat exchanger coil temperature, and determining whether a second threshold condition is satisfied based on a compressor discharge temperature;

[0007] If the first threshold condition is satisfied and / or the second threshold condition is satisfied, determining a corrected indoor temperature based on the indoor temperature;

[0008] If the indoor corrected temperature meets the temperature condition, the stop valve is controlled to be adjusted to an initial opening.

[0009] In one embodiment, the step of determining whether the first threshold condition is met based on the outdoor heat exchanger coil temperature, and determining whether the second threshold condition is met based on the compressor exhaust temperature, comprises:

[0010] If the outdoor heat exchanger coil temperature is greater than a first threshold, determining that the first threshold condition is met;

[0011] determining an exhaust temperature correction value of the compressor based on the compressor exhaust temperature;

[0012] If the exhaust temperature correction value is greater than a second threshold, it is determined that the second threshold condition is met.

[0013] In one embodiment, after the step of determining the indoor corrected temperature based on the indoor temperature, the following steps are included:

[0014] If the indoor temperature does not meet the temperature condition, the compressor is controlled to perform a frequency reduction process.

[0015] In one embodiment, the first branch is provided with a throttling device, and after the step of controlling the stop valve to adjust to an initial opening, the method further comprises:

[0016] determining a target opening of the throttling device based on a correction value of the exhaust temperature of the compressor and a temperature of the outdoor heat exchanger coil;

[0017] The throttling device is adjusted to the target opening.

[0018] In one embodiment, the step of determining the target opening of the throttling device based on the exhaust temperature correction value of the compressor and the outdoor heat exchanger coil temperature includes any one of the following:

[0019] If the exhaust temperature correction value is greater than the coefficient threshold, and the outdoor heat exchanger coil temperature is greater than the coil temperature threshold, determining the target opening to be the first opening;

[0020] If the exhaust temperature correction value is greater than the coefficient threshold, and the outdoor heat exchanger coil temperature is less than the coil temperature threshold, determining the target opening to be the second opening;

[0021] If the exhaust temperature correction value is less than the coefficient threshold, and the outdoor heat exchanger coil temperature is greater than the coil temperature threshold, determining the target opening to be the third opening;

[0022] If the exhaust temperature correction value is less than the coefficient threshold, and the outdoor heat exchanger coil temperature is less than the coil temperature threshold, the target opening degree is determined to be a fourth opening degree.

[0023] In one embodiment, the first opening is greater than the second opening, the second opening is greater than the third opening, and the third opening is greater than the fourth opening.

[0024] In one embodiment, after the step of adjusting the throttling device to the target opening, the following steps are performed:

[0025] If the operating time of the throttling device after being adjusted to the target opening meets the time threshold, the steps of determining whether the first threshold condition is met based on the outdoor heat exchanger coil temperature and determining whether the second threshold condition is met based on the compressor exhaust temperature are re-executed.

[0026] In one embodiment, after the steps of determining whether the first threshold condition is met based on the outdoor heat exchanger coil temperature and determining whether the second threshold condition is met based on the compressor exhaust temperature, the following steps are performed:

[0027] If the first threshold condition is not met, or the second threshold condition is not met, the compressor is controlled to maintain the current operating state.

[0028] In addition, to achieve the above-mentioned purpose, the present application also provides a control device for an air conditioner, which includes: a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the computer program is configured to implement the steps of the control method for the air conditioner as described above.

[0029] In addition, to achieve the above-mentioned purpose, the present application also provides a storage medium, which is a computer-readable storage medium, and a program for implementing the control method of the air conditioner is stored on the computer-readable storage medium. The program for implementing the control method of the air conditioner is executed by a processor to implement the steps of the control method of the air conditioner as described above.

[0030] The present application provides a control method for an air conditioner. The present application first collects indoor temperature, compressor exhaust temperature and outdoor heat exchanger coil temperature in real time to determine whether the cooling and temperature reduction conditions are met. If not, the compressor is controlled to reduce frequency to achieve cooling and improve the reliability of the air conditioner operation. If it is met, it is determined to execute the cooling and temperature reduction mode, and the stop valve is controlled to be adjusted to the initial opening; the target opening of the throttling device is determined based on the exhaust temperature correction value of the compressor and the outdoor heat exchanger coil temperature; and the second throttling valve is adjusted to the target opening. Among them, the air conditioner includes a compressor, a four-way valve, an outdoor heat exchanger, a first throttling device and an indoor heat exchanger connected in sequence, the outdoor heat exchanger is connected to the first throttling device through a second branch, the outdoor heat exchanger is connected to the stop valve, the throttling device and the compressor in sequence through the first branch, and a cooling channel is provided in the cavity of the compressor so that the refrigerant flows into the cooling channel through the throttling device. Thereby achieving the technical effect of improving the operating stability and refrigeration efficiency of the air conditioner under high temperature conditions.

[0031] In summary, the present application overcomes the technical defects in the related art that the refrigeration capacity of the refrigeration system needs to be sacrificed and the refrigeration efficiency of the system is reduced by combining the adjustment of the air conditioner and the adjustment of the opening of the throttling device in the air conditioner, thereby achieving the technical effect of having little impact on the refrigeration capacity of the refrigeration system, reducing the exhaust pressure and temperature of the compressor, and significantly improving the energy efficiency and reliability of high-temperature refrigeration. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0033] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0034] Figure 1 A schematic diagram of the hardware structure provided for the first embodiment of the air conditioner control method of the present application;

[0035] Figure 2 A flow chart of a second embodiment of the air conditioner control method of the present application;

[0036] Figure 3 A flowchart diagram of a fourth embodiment of the air conditioner control method of the present application;

[0037] Figure 4 A brief flow chart of the fourth embodiment of the air conditioner control method of the present application;

[0038] Figure 5 This is a schematic diagram of the hardware structure involved in the control device embodiment of the air conditioner of this application.

[0039] The purpose, features and advantages of this application will be further described in conjunction with the embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0040] It should be understood that the specific embodiments described herein are only used to explain the technical solutions of the present application and are not used to limit the present application.

[0041] In order to better understand the technical solution of the present application, a detailed description will be given below in conjunction with the accompanying drawings and specific implementation methods.

[0042] The main solution of the present application is: based on the indoor temperature, the compressor exhaust temperature and the outdoor heat exchanger coil temperature, determine whether the cooling conditions are met; if so, control the stop valve to adjust to the initial opening; determine the target opening of the throttling device based on the exhaust temperature correction value of the compressor and the outdoor heat exchanger coil temperature; adjust the second throttle valve to the target opening.

[0043] At present, most air conditioners on the market have low high-temperature cooling capacity. The main reason is that the cooling efficiency of air conditioners will decrease with the increase of ambient temperature. At the same time, in a high temperature environment, the condensing pressure and exhaust pressure of the air conditioning system will increase, the energy consumption of the compressor will increase, and the pressure limit of the compressor and pipelines will also need to be improved. The current common solution is to increase the exhaust pressure limit of the compressor to ensure the safe and stable operation of the system, improve the mechanical efficiency of the compressor to reduce the energy consumption of the compressor, or increase the heat exchange area or air volume of the outdoor unit to enhance heat exchange. However, the cost of the above solution is too high, and it will sacrifice the cooling capacity of the refrigeration system and reduce the cooling efficiency of the air conditioner.

[0044] The present application overcomes the technical defects in the related art that the refrigeration capacity of the refrigeration system needs to be sacrificed and the refrigeration efficiency of the system is reduced by combining the adjustment of the air conditioner with the adjustment of the opening of the throttling device in the air conditioner. The application achieves the technical effect of having little impact on the refrigeration capacity of the refrigeration system, reducing the exhaust pressure and temperature of the compressor, and significantly improving the energy efficiency and reliability of high-temperature refrigeration.

[0045] It should be noted that the execution subject of this embodiment may be an air conditioner, or a computing service device with data processing, network communication and program running functions, such as a tablet computer, a personal computer, a mobile phone, etc., or an air conditioner control device capable of realizing the above functions, etc., and this embodiment does not specifically limit this. The following takes the air conditioner as the execution subject as an example to illustrate this embodiment and the following embodiments.

[0046] Based on this, the first embodiment of the present application proposes an air conditioner, referring to Figure 1 The air conditioner includes a compressor, a four-way valve, an outdoor heat exchanger and an indoor heat exchanger connected in sequence, the compressor includes a compression chamber and a cooling channel isolated from each other, the exhaust port and the air intake port of the compression chamber are both connected to the four-way valve, the first side of the outdoor heat exchanger is connected to the four-way valve, and the other side of the outdoor heat exchanger is provided with a first branch, the first branch is connected to the stop valve, the cooling channel and the air intake port in sequence.

[0047] In this embodiment, the flow direction of the refrigerant in the air conditioner in the cooling mode is shown. That is, the main body of the cooling flow is the compressor, the four-way valve, the outdoor heat exchanger and the indoor heat exchanger connected in sequence, and finally the indoor heat exchanger is connected to the air intake of the compressor through the four-way valve to complete the circulation of the refrigerant in the main line. In the main line, the first side of the outdoor heat exchanger, that is, the refrigerant inlet is connected to the four-way valve, and the refrigerant flows from the four-way valve to the outdoor heat exchanger.

[0048] Furthermore, relative to the other side of the first side of the outdoor heat exchanger, a first branch is provided on the other side of the outdoor heat exchanger, and the outdoor heat exchanger is connected to the cooling channel of the compressor through the first branch.

[0049] As an optional implementation, the first branch is provided with a shut-off valve. After the refrigerant flows out of the outdoor heat exchanger, it flows into the cooling channel of the compressor through the shut-off valve, and then flows to the suction port of the compression chamber through the cooling channel.

[0050] In this embodiment, the compressor includes a compression chamber and a cooling channel that are isolated from each other. When the refrigerant flows through the cooling channel, it exchanges heat with the compressor chamber, and then the refrigerant absorbs heat and evaporates, and then flows back to the air intake of the compressor. The compressor is cooled through this process.

[0051] Optionally, the first branch is provided with a stop valve and a throttling device, so that the refrigerant flows from the outdoor heat exchanger through the stop valve and the throttling device in sequence, and finally returns to the suction port of the compressor through the cooling channel of the compressor.

[0052] Exemplarily, the air conditioner mainly includes core components such as a compressor, a four-way valve, an outdoor heat exchanger, an indoor heat exchanger, a stop valve, and a throttling device. These components are connected in sequence to form two main refrigerant circulation circuits: a main refrigerant circulation circuit and an auxiliary refrigerant circulation circuit. The first side of the outdoor heat exchanger is connected to the four-way valve, while the other side forms a passage with the indoor heat exchanger and the compressor through different branches. Specifically, the outdoor heat exchanger is directly connected to the indoor heat exchanger through the second branch to form a main refrigerant circulation circuit; at the same time, through the first branch, the outdoor heat exchanger is connected to the stop valve, the throttling device in turn, and finally connected to the compressor. In the cavity of the compressor, a special cooling channel is designed to receive the refrigerant flowing in through the throttling device to achieve cooling of the compressor.

[0053] Furthermore, a second branch is provided on the other side of the outdoor heat exchanger relative to the first side, and the outdoor heat exchanger is connected to the indoor heat exchanger through the second branch, and further connected to the air intake port of the compressor through the indoor heat exchanger.

[0054] In the main refrigerant circulation loop, high-temperature and high-pressure gaseous refrigerant is discharged from the compressor and enters the outdoor heat exchanger through the four-way valve. In the outdoor heat exchanger, the refrigerant releases heat and changes from gas to liquid. The transformed high-pressure liquid refrigerant flows into the indoor heat exchanger through the second branch, absorbs heat in the indoor heat exchanger and evaporates into low-temperature and low-pressure gaseous refrigerant, which is sucked into the compressor again, completing a refrigeration cycle.

[0055] The auxiliary refrigerant circulation loop is mainly used for cooling the compressor. Part of the high-pressure liquid refrigerant coming out of the outdoor heat exchanger flows into the stop valve through the first branch, and after being controlled by the stop valve, it enters the throttling device (such as a capillary tube or an expansion valve) for throttling and pressure reduction. The throttled refrigerant passes through the cooling channel set in the compressor cavity, absorbs the heat generated when the compressor is working, thereby effectively reducing the operating temperature of the compressor. The cooled refrigerant finally returns to the compressor to complete the cooling cycle.

[0056] The cooling channel is located in the compressor cavity, and its design fully considers the flow characteristics of the refrigerant and the heat distribution inside the compressor. By optimizing the layout and shape of the cooling channel, it ensures that the refrigerant can fully contact the heat source inside the compressor and improve the cooling efficiency. The size and path of the cooling channel are precisely calculated to achieve the best cooling effect and minimum pressure loss.

[0057] The throttling device is a key component in the auxiliary refrigerant circulation loop, and its type and specifications directly affect the cooling effect. In this embodiment, the throttling device can be selected as a fixed orifice plate, a capillary tube or a thermal expansion valve, etc. The specific selection depends on the overall design and operating conditions of the air conditioner. The adjustment capability of the throttling device can ensure that the refrigerant flow matches the cooling demand of the compressor under different working conditions, and keep the compressor working in the optimal temperature range.

[0058] Furthermore, in the second branch, a second throttling device is provided between the refrigerant outlet of the outdoor heat exchanger and the refrigerant inlet of the indoor heat exchanger to control the refrigerant flow and reduce the refrigerant pressure and temperature. Among them, limiting the excessive refrigerant flow and pressure entering the compressor can prevent the abnormal increase of the internal temperature of the compressor, thereby improving the reliability of the system and extending the service life of the equipment.

[0059] In this embodiment, an auxiliary refrigerant circulation loop is provided outside the main refrigerant circulation loop, and part of the high-pressure liquid refrigerant coming out of the outdoor heat exchanger flows into the stop valve through the first branch, and after being controlled by the stop valve, enters the throttling device (such as a capillary tube or an expansion valve) for throttling and pressure reduction. The throttled refrigerant passes through a cooling channel provided in the compressor cavity to absorb the heat generated when the compressor is working. It is sufficient to lead out part of the refrigerant at the refrigerant outlet, and the entire refrigeration system is slightly modified, and basically no additional components need to be added, which reduces the implementation cost of the solution. At the same time, the internal cooling capacity of the refrigeration system is used to liquid-cool the compressor, which effectively reduces the compressor power and the compressor exhaust temperature.

[0060] Based on the first embodiment, the second embodiment of the present application proposes a control method for an air conditioner. Figure 2 , the control method of the air conditioner comprises steps S110 to S130:

[0061] Step S110 , determining whether a first threshold condition is satisfied based on the outdoor heat exchanger coil temperature, and determining whether a second threshold condition is satisfied based on the compressor exhaust temperature.

[0062] In this embodiment, the indoor temperature is the current indoor ambient temperature measured by the indoor thermostat. The compressor exhaust temperature is the temperature of the compressor exhaust measured by the temperature sensor near the compressor exhaust port. The outdoor heat exchanger coil temperature is the surface temperature of the outdoor heat exchanger coil measured by the temperature sensor installed on the outdoor heat exchanger. The cooling condition is a set condition, including but not limited to the intervals of the indoor temperature, the compressor exhaust temperature and the outdoor heat exchanger coil temperature, or the numerical relationship between the three.

[0063] Exemplarily, the indoor thermostat, compressor exhaust temperature sensor and outdoor heat exchanger coil temperature sensor are integrated into the air conditioning control system. During the system initialization phase, the reading calibration and threshold of each sensor are set. The system monitors the indoor temperature, compressor exhaust temperature and outdoor heat exchanger coil temperature in real time. The data is collected and transmitted to the central control unit. The central control unit analyzes the received data to determine whether the cooling conditions are met.

[0064] Optionally, step S110 includes: determining whether the outdoor heat exchanger coil temperature meets a first threshold condition, and whether the exhaust temperature correction value meets a second threshold condition. If both are met, executing the step of determining the indoor correction temperature based on the indoor temperature; otherwise, the air conditioner maintains the current operating state.

[0065] That is, if the first threshold condition is not met, or the second threshold condition is not met, the compressor is controlled to maintain the current operating state.

[0066] As an optional implementation, a first threshold is obtained, and based on the outdoor heat exchanger coil temperature and the first threshold, whether the first preset condition is met is determined. A second threshold is obtained, and based on the second threshold and the compressor exhaust temperature, whether the second threshold condition is met is determined.

[0067] Step S120: if the first threshold condition is met and / or the second threshold condition is met, determining a corrected indoor temperature based on the indoor temperature.

[0068] In this embodiment, indoor temperature: the current indoor ambient temperature measured by the indoor thermostat. Indoor corrected temperature: a temperature value determined based on the determined first correction coefficient and the indoor temperature, used to evaluate the indoor heat load and air conditioning demand. That is, the indoor corrected temperature is determined based on the first correction coefficient and the indoor temperature.

[0069] As an optional implementation, if the first threshold condition is met, the indoor corrected temperature is determined based on the indoor temperature.

[0070] As another optional implementation, if the second threshold condition is met, the indoor corrected temperature is determined based on the indoor temperature.

[0071] As another optional implementation, if the first threshold condition and the second threshold condition are satisfied at the same time, the indoor corrected temperature is determined based on the indoor temperature.

[0072] Optionally, determining the indoor corrected temperature based on the indoor temperature includes: illustratively, obtaining the indoor temperature and a second reference temperature, where the second reference temperature is a set temperature, a historical indoor temperature, or a preset value. The historical indoor temperature is the indoor temperature before a set time interval, such as the indoor temperature ten minutes before the current moment. The preset value is a set value, such as 20 degrees or 26 degrees. The indoor corrected temperature is determined by dividing the indoor temperature by the second reference temperature.

[0073] Optionally, the first correction coefficient X is obtained, the indoor temperature T1 is obtained, and the indoor correction temperature is determined to be T1*X. That is, the indoor correction temperature is the product of the indoor temperature and the first correction coefficient.

[0074] Exemplarily, the first correction coefficient X is a preset value of 1.1 or 0.9.

[0075] Step S130: If the indoor corrected temperature meets the temperature condition, the stop valve is controlled to be adjusted to an initial opening.

[0076] In this embodiment, the stop valve is a valve used to control the flow of refrigerant to the throttling device, and its opening is adjustable. The initial opening is a preset opening of the stop valve. If the condition is met, a signal is sent to the stop valve to adjust it to the initial opening. Temperature condition: is a preset range or specific value of indoor corrected temperature, which is used to judge the indoor comfort and the urgency of cooling demand.

[0077] As an optional implementation manner, the initial opening is the maximum opening.

[0078] As another optional implementation, the initial opening is one-half opening.

[0079] As another optional implementation, the initial opening is positively correlated with the indoor temperature, that is, the lower the indoor temperature, the smaller the initial opening, and the higher the indoor temperature, the larger the initial opening.

[0080] Optionally, if not satisfied, the air conditioner maintains the current operating mode.

[0081] Furthermore, the temperature condition is associated with a numerical value type of the indoor corrected temperature.

[0082] Considering that in cooling mode, the indoor temperature should be as close to the set temperature as possible, when the second reference temperature is the set temperature, the temperature interval corresponding to the temperature condition is a closed interval from -1.1 to 1.1, or a closed interval from -1.3 to 1.3. If the indoor corrected temperature is not within the temperature interval, it is determined that the air conditioner meets the cooling condition, and step S130 is executed.

[0083] Optionally, if the indoor temperature does not meet the temperature condition, the compressor is controlled to perform a frequency reduction process.

[0084] As an optional implementation, if the indoor corrected temperature is within the temperature range, it is determined that the temperature condition is not met, and the compressor is controlled to perform a frequency reduction process, that is, the external unit performs a frequency reduction process to improve the reliability of the cooling process.

[0085] Exemplarily, the system monitors the indoor temperature, the compressor exhaust temperature, and the outdoor heat exchanger coil temperature in real time. Collect data and transmit it to the central control unit. The control unit analyzes the received data to determine whether the first and second threshold conditions are met. Calculate the exhaust temperature correction value and the indoor correction temperature. According to the exhaust temperature correction value and the indoor correction temperature, determine whether the cooling and temperature reduction conditions are met. If met, perform subsequent cooling operations; if not, perform the frequency reduction process.

[0086] As another optional implementation in this embodiment, the indoor corrected temperature is the rate of change of the indoor temperature, that is, the indoor corrected temperature is the difference between the indoor temperature and the historical indoor temperature, divided by the unit time.

[0087] In this embodiment, since it is a cooling mode, the temperature is expected to decrease, that is, the indoor corrected temperature is a negative number. Therefore, the temperature coefficient threshold is determined to be any value in a closed interval consisting of -0.5 to 0. For example, -0.5, -0.4, -0.3, -0.2, -0.1 and 0. If the indoor corrected temperature is less than the temperature coefficient threshold, it is determined that the indoor corrected temperature does not meet the temperature condition. If the indoor corrected temperature is greater than or equal to the temperature coefficient threshold, it is determined that the temperature condition is met.

[0088] The present application provides a control method for an air conditioner. The present application first collects indoor temperature, compressor exhaust temperature and outdoor heat exchanger coil temperature in real time to determine whether the cooling and temperature reduction conditions are met. If not, the compressor is controlled to reduce frequency to achieve cooling and improve the reliability of the air conditioner operation. If it is met, it is determined to execute the cooling and temperature reduction mode, and the stop valve is controlled to be adjusted to the initial opening; the target opening of the throttling device is determined based on the exhaust temperature correction value of the compressor and the outdoor heat exchanger coil temperature; and the second throttling valve is adjusted to the target opening. Among them, the air conditioner includes a compressor, a four-way valve, an outdoor heat exchanger, a first throttling device and an indoor heat exchanger connected in sequence, the outdoor heat exchanger is connected to the first throttling device through a second branch, the outdoor heat exchanger is connected to the stop valve, the throttling device and the compressor in sequence through the first branch, and a cooling channel is provided in the cavity of the compressor so that the refrigerant flows into the cooling channel through the throttling device. Thereby achieving the technical effect of improving the operating stability and refrigeration efficiency of the air conditioner under high temperature conditions.

[0089] In summary, the present application overcomes the technical defects in the related art that the refrigeration capacity of the refrigeration system needs to be sacrificed and the refrigeration efficiency of the system is reduced by combining the adjustment of the air conditioner and the adjustment of the opening of the throttling device in the air conditioner, thereby achieving the technical effect of having little impact on the refrigeration capacity of the refrigeration system, reducing the exhaust pressure and temperature of the compressor, and significantly improving the energy efficiency and reliability of high-temperature refrigeration.

[0090] Based on the above embodiments, embodiment 3 of the present application proposes a control method for an air conditioner. The same or similar contents as those of the above embodiments 1 and 2 can be referred to the above introduction and will not be repeated later.

[0091] Step S110 includes:

[0092] Step S310: If the outdoor heat exchanger coil temperature is greater than a first threshold, it is determined that the first threshold condition is met.

[0093] In this embodiment, the outdoor heat exchanger coil temperature refers to the temperature of the surface of the outdoor heat exchanger coil, which is usually measured by a temperature sensor installed on the outdoor heat exchanger. The first threshold condition is a preset temperature value used to determine whether the outdoor heat exchanger coil is in an over-high temperature state, which may indicate that the heat dissipation efficiency of the outdoor heat exchanger is insufficient.

[0094] The outdoor heat exchanger coil temperature is collected to determine whether the outdoor heat exchanger coil temperature is greater than a first threshold corresponding to a first threshold condition. If so, it is determined that the outdoor heat exchanger coil temperature meets the first threshold condition.

[0095] Step S320: determining an exhaust temperature correction value of the compressor based on the compressor exhaust temperature.

[0096] In this embodiment, the exhaust temperature correction value is defined as the ratio of the compressor exhaust temperature to a first reference temperature, and the first reference temperature can be determined according to actual application and system design. Alternatively, the exhaust temperature correction value is the product of the compressor exhaust temperature and the second correction coefficient.

[0097] As an optional implementation, a preset second correction coefficient Y is obtained, the compressor exhaust temperature TP is obtained, and the exhaust temperature correction value is determined to be TP*Y.

[0098] Exemplarily, the second correction coefficient is 0.9 or 1.1.

[0099] In this embodiment, the first correction coefficient and the second correction coefficient are both correction coefficients, and the correction coefficients are determined according to the actual air-conditioning system and the control strategy. The correction coefficients are obtained by experimental or simulation methods. For example, the compressor exhaust temperature at different indoor temperatures is measured experimentally, and then the correction coefficients are obtained by data fitting. Alternatively, a mathematical model of the air-conditioning system is established and the correction coefficients are obtained by simulation calculation. In practical applications, the correction coefficients change with the changes in factors such as the operating state and environmental conditions of the air-conditioning system, so the correction coefficients need to be updated or adjusted regularly. In addition, the determination of the correction coefficients also needs to take into account the control objectives of the air-conditioning system. For example, if the control objective is to keep the indoor temperature constant, then the correction coefficients enable this objective to be achieved under various conditions. If the control objective is to optimize the energy efficiency ratio of the air-conditioning system, then the correction coefficients should be able to achieve the optimal energy efficiency ratio under various conditions.

[0100] As an optional implementation, the rated operating temperature determined when the air-conditioning system is designed, or it can be the average exhaust temperature obtained from experimental data. The exhaust temperature is directly measured by a temperature sensor installed at the compressor exhaust port, or estimated by a thermodynamic model and known system parameters (such as evaporation temperature and condensation temperature). Select a first reference temperature and determine a suitable first reference temperature based on the system design standard or actual operating conditions. Measure the exhaust temperature and install a temperature sensor at the compressor exhaust port to measure the exhaust temperature in real time. Calculate the exhaust temperature correction value and determine the exhaust temperature correction value based on the compressor exhaust temperature divided by the first reference temperature.

[0101] Step S330: If the exhaust temperature correction value is greater than a second threshold, it is determined that the second threshold condition is met.

[0102] In this embodiment, the compressor exhaust temperature refers to the temperature of the refrigerant gas discharged by the compressor, which is measured by a temperature sensor near the compressor exhaust port. Exhaust temperature correction value: a coefficient calculated based on the compressor exhaust temperature, reflecting the current heat load of the compressor and the pressure ratio of the system. The second threshold condition: a preset threshold of the exhaust temperature correction value, which is used to evaluate whether the compressor is close to an overheating state or whether the system is under high load operation.

[0103] After the exhaust temperature correction value is determined, a second threshold corresponding to the second threshold condition is obtained, and if the exhaust temperature correction value is greater than the second threshold, it is determined that the second threshold condition is met.

[0104] Since the exhaust temperature correction value of the compressor is determined based on the compressor exhaust temperature if the outdoor heat exchanger coil temperature meets the first threshold condition; the indoor correction temperature is determined based on the indoor temperature if the exhaust temperature correction value meets the second threshold condition; if the indoor correction temperature meets the temperature condition, it is determined that the cooling condition is met. That is, a joint judgment is made through multiple parameters such as indoor temperature, compressor exhaust temperature and outdoor heat exchanger coil temperature to determine whether the air conditioner maintains the current operating mode, performs a frequency reduction process, or performs a cooling process. This improves the reliability of the air conditioner under high temperature conditions.

[0105] Based on the above embodiments, a control method for an air conditioner is proposed in Embodiment 4 of the present application. The same or similar contents as those in the above embodiments can be referred to the above introduction and will not be described in detail later. Figure 3 , after step S130, including:

[0106] Step S410: determining a target opening degree of the throttling device based on the exhaust temperature correction value of the compressor and the outdoor heat exchanger coil temperature.

[0107] In this embodiment, the exhaust temperature correction value is a coefficient calculated based on the compressor exhaust temperature, reflecting the current heat load of the compressor. The target opening is the opening of the throttling device calculated by the system algorithm based on the exhaust temperature correction value and the outdoor heat exchanger coil temperature to achieve the best refrigerant flow and cooling effect.

[0108] As an optional implementation, the exhaust temperature correction value is determined based on the compressor exhaust temperature, the first numerical relationship between the exhaust temperature correction value and the coefficient threshold, and the second numerical relationship between the outdoor heat exchanger coil temperature and the temperature threshold are determined, and the target opening of the throttling device is determined based on the first numerical relationship and the second numerical relationship.

[0109] Step S420, adjusting the second throttle valve to the target opening.

[0110] In this embodiment, the throttling device may be an expansion valve, an electronic expansion valve (EXV) or other types of flow control devices. Adjusting to the target opening is that the control system automatically adjusts the opening of the throttling device according to the calculated target opening, which is achieved by an electric actuator or a similar mechanism.

[0111] After the target opening is determined, the throttling device is controlled to be adjusted to the target opening to cooperate with the initial opening of the stop valve to jointly control the flow of the refrigerant in the first branch to cool the compressor.

[0112] Optionally, step S410 includes: determining the target opening degree based on a first numerical relationship between the exhaust temperature correction value and the coefficient threshold, and a second numerical relationship between the outdoor heat exchanger coil temperature and the coil temperature threshold.

[0113] In this embodiment, the coefficient threshold and the coil temperature threshold are set values, which are obtained in advance from laboratory data and stored in the storage module of the air conditioner.

[0114] As an optional implementation, first, the system will monitor and calculate the exhaust temperature correction value in real time, and compare it with the preset coefficient threshold. The exhaust temperature correction value reflects the temperature condition at the exhaust of the compressor and is one of the important parameters for judging the thermal load of the system. The relationship between the outdoor heat exchanger coil temperature and the coil temperature threshold is judged. At the same time, the system will also detect the coil temperature of the outdoor heat exchanger and compare it with a preset coil temperature threshold. This parameter is crucial for evaluating the impact of external ambient temperature on the condensation effect. Based on the numerical relationship between the above two parameters and their respective thresholds, the system will determine the target opening of the electronic expansion valve. Different combinations correspond to different opening settings to adapt to different operating conditions and ensure efficient and stable operation of the system.

[0115] There are four specific situations:

[0116] S1, if the exhaust temperature correction value is greater than the coefficient threshold, and the outdoor heat exchanger coil temperature is greater than the coil temperature threshold, determine the target opening degree to be a first opening degree.

[0117] In this embodiment, if the exhaust temperature correction value exceeds the coefficient threshold and the outdoor heat exchanger coil temperature also exceeds the coil temperature threshold, this indicates that the system is in a high heat load state and the external ambient temperature is high or the condensing condition is not good. At this time, the system sets the opening of the electronic expansion valve to the first opening, which may be a relatively small opening value, to reduce the refrigerant flow and prevent the compressor from overheating.

[0118] That is, the throttle valve controls the flow rate to R1 and the cooling temperature to U1. At this time, the reliability requirement of the compressor is given priority. After passing through the throttle valve, the cold refrigerant is throttled and cooled to meet the compressor's reduced exhaust demand.

[0119] S2: If the exhaust temperature correction value is greater than the coefficient threshold, and the outdoor heat exchanger coil temperature is less than the coil temperature threshold, determine the target opening degree to be a second opening degree.

[0120] In this embodiment, if the exhaust temperature correction value is still higher than the threshold, but the outdoor heat exchanger coil temperature is lower than the threshold, it indicates that although the internal heat load of the system is high, the external condensing conditions are more favorable. At this time, the system may adjust the electronic expansion valve to a second opening, which may be slightly larger than the first opening, to increase the refrigerant flow rate and improve efficiency by taking advantage of the good external condensing conditions.

[0121] That is, the throttle valve controls the flow rate to R2, and the cooling temperature to U2. At this time, the reliability requirements and energy efficiency ratio of the compressor are considered at the same time. After the cold refrigerant passes through the throttle valve, it is appropriately throttled and cooled to be compatible with the compressor's reduced exhaust requirements and energy efficiency ratio requirements.

[0122] S3: If the exhaust temperature correction value is less than the coefficient threshold, and the outdoor heat exchanger coil temperature is greater than the coil temperature threshold, determine the target opening to be a third opening.

[0123] In this embodiment, when the exhaust temperature correction value is lower than the threshold value and the outdoor heat exchanger coil temperature is higher than the threshold value, it means that the system heat load is low, but the external condensation conditions are unfavorable. At this time, the system may select the third opening, which will take into account the need to reduce the refrigerant flow rate and avoid excessive condensation.

[0124] That is, the throttle valve controls the flow rate to R3 and the cooling temperature to U3. At this time, the air conditioning energy efficiency ratio requirement is prioritized. After the cold refrigerant passes through the throttle valve, it is slightly throttled and cooled to be compatible with the compressor to reduce the exhaust demand and energy efficiency ratio requirements.

[0125] S4: If the exhaust temperature correction value is less than the coefficient threshold, and the outdoor heat exchanger coil temperature is less than the coil temperature threshold, determine the target opening degree to be a fourth opening degree.

[0126] In this embodiment, finally, if the exhaust temperature correction value and the outdoor heat exchanger coil temperature are both lower than their respective thresholds, indicating that the system is in a low heat load state and the external condensing conditions are good, the system will use the fourth opening, which may be the maximum opening setting, to maximize the refrigerant flow and system efficiency.

[0127] That is, the throttle valve controls the flow rate to R4 and the cooling temperature to U4. At this time, the air conditioning energy efficiency ratio requirement is prioritized. After the cold refrigerant passes through the throttle valve, throttling and cooling are not required, so as to achieve the maximum energy efficiency ratio requirement in the current mode.

[0128] It should be noted that the first opening is greater than the second opening, the second opening is greater than the third opening, and the third opening is greater than the fourth opening. The cooling temperature U1 is less than the cooling temperature U2, the cooling temperature U2 is less than the cooling temperature U3, and the cooling temperature U3 is less than the cooling temperature U4.

[0129] Optionally, after step S420, it also includes: if the operating time of the throttling device after being adjusted to the target opening meets the time threshold, re-execute the steps of determining whether the first threshold condition is met based on the outdoor heat exchanger coil temperature, and determining whether the second threshold condition is met based on the compressor exhaust temperature.

[0130] In this embodiment, after N time has passed, the air conditioner re-performs the stage determination and enters the normal cooling mode start determination. After the throttling device performs the cooling process, that is, after the throttling device is adjusted to the target opening, the operation time meets the time threshold, and step S110 is re-performed.

[0131] As an optional implementation manner, the time threshold is a preset value, such as ten minutes, fifteen minutes, twenty minutes, etc., which is not specifically limited here.

[0132] As another optional implementation, a numerical difference between the exhaust temperature correction value and the coefficient threshold is determined, and the time threshold is determined according to the numerical difference.

[0133] Exemplarily, the numerical difference is positively correlated with the time threshold, that is, the larger the numerical difference, the larger the time threshold.

[0134] Through the above control method based on the dual judgment of the exhaust temperature correction value and the outdoor heat exchanger coil temperature, the opening of the electronic expansion valve can be adjusted more accurately, thereby optimizing the performance of the air conditioning system under different environmental and load conditions. This method not only improves energy efficiency, but also helps to extend the service life of the equipment.

[0135] Exemplarily, to facilitate the understanding of the technical concept or technical principle of the control method of the air conditioner after combining this embodiment with any of the above embodiments, please refer to Figure 4 , Figure 4 A schematic flowchart of the control method of the air conditioner is provided as follows:

[0136] When the air conditioner enters the cooling mode, the temperatures of T3, TP, and T1 are collected and recorded simultaneously. Among them, T3 is the temperature of the outdoor heat exchanger coil, T is the indoor temperature, TP is the compressor discharge temperature, Tp*Y is the exhaust temperature correction value, T1*X is the indoor corrected temperature, R is the cooling channel flow rate, U is the cooling temperature of the cooling channel, and R1 is the initial opening degree of the electronic expansion valve.

[0137] Enter the determination step. For the first threshold condition determination: when T3>T30, the condition is met and proceed to the next step for calculation. When not met, the air conditioner maintains the current mode. T30 is the first threshold.

[0138] For the second threshold condition determination: detect TP*Y, and determine whether the exhaust temperature correction value is greater than the second threshold TP0. If the condition is met, proceed to the next step for calculation. When not met, the air conditioner maintains the current mode.

[0139] When the above conditions are met simultaneously, detect the indoor corrected temperature T1*X. When T1*X is met, it is regarded as meeting the user's preset temperature requirement, and the outdoor unit can perform frequency reduction to achieve temperature reduction and improve reliability. When the condition is not met, the air conditioner proceeds to the next action;

[0140] The air conditioner turns on the cooling and temperature reduction mode, and the stop valve opens. At this time, according to the exhaust temperature correction value and the temperature of the outdoor heat exchanger coil, there are the following four situations:

[0141] 1. When TP*Y>TP0 and T3>T31, the throttle valve controls the flow rate to be R1 and the cooling temperature to be U1. At this time, the compressor reliability requirement is given priority. After the cold refrigerant passes through the throttle valve, it undergoes throttling and temperature reduction to meet the compressor's exhaust reduction requirement.

[0142] 2. When TP*Y>TP0 and T3<T31, the throttle valve controls the flow rate to be R2 and the cooling temperature to be U2. At this time, both the compressor reliability requirement and the energy efficiency ratio are considered. After the cold refrigerant passes through the throttle valve, it undergoes appropriate throttling and temperature reduction to be compatible with the compressor's exhaust reduction requirement and the energy efficiency ratio requirement.

[0143] 3. When TP*Y<TP0 and T3>T31, the throttle valve controls the flow rate to be R3 and the cooling temperature to be U3. At this time, the air conditioner energy efficiency ratio requirement is given priority. After the cold refrigerant passes through the throttle valve, it undergoes slight throttling and temperature reduction to be compatible with the compressor's exhaust reduction requirement and the energy efficiency ratio requirement.

[0144] 4. When TP*Y < TP0 and T3 < T31, the throttle valve controls the flow rate to be R4 and the cooling temperature to be U4. At this time, to meet the priority air conditioner energy efficiency ratio requirement, the refrigerant after the throttle valve can avoid throttling and temperature reduction, achieving the maximum energy efficiency ratio requirement in the current mode.

[0145] After N time periods, the air conditioner re - judges the stage and enters the determination for starting the conventional refrigeration mode.

[0146] This application provides a control device for an air conditioner. The control device of the air conditioner includes: at least one processor; and a memory communicatively connected to the at least one processor; wherein the memory stores instructions executable by the at least one processor, and when the instructions are executed by the at least one processor, the at least one processor is enabled to execute the control method of the air conditioner in the first embodiment above.

[0147] Next, refer to Figure 5 , which shows a schematic structural diagram of a control device of an air conditioner suitable for implementing the embodiments of the present application. The control device of the air conditioner in the embodiments of the present application may include, but is not limited to, mobile terminals such as mobile phones, laptop computers, digital broadcast receivers, PDAs (Personal Digital Assistants), PADs (Portable Application Descriptions: tablet computers), PMPs (Portable Media Players), in - vehicle terminals (such as in - vehicle navigation terminals), etc., and fixed terminals such as digital TVs, desktop computers, etc. Figure 5 The control device of the air conditioner shown is only an example and should not impose any limitations on the functions and usage scope of the embodiments of the present application.

[0148] As Figure 5As shown, the control device of the air conditioner may include a processing device 1001 (e.g., a central processing unit, a graphics processor, etc.), which can perform various appropriate actions and processes according to a program stored in a read-only memory (ROM: Read Only Memory) 1002 or a program loaded from a storage device 1003 to a random access memory (RAM: Random Access Memory) 1004. In RAM1004, various programs and data required for the operation of the control device of the air conditioner are also stored. The processing device 1001, ROM1002, and RAM1004 are connected to each other through a bus 1005. An input / output (I / O) interface 1006 is also connected to the bus. Generally, the following systems can be connected to the I / O interface 1006: an input device 1007 including, for example, a touch screen, a touch pad, a keyboard, a mouse, an image sensor, a microphone, an accelerometer, a gyroscope, etc.; an output device 1008 including, for example, a liquid crystal display (LCD: Liquid Crystal Display), a speaker, a vibrator, etc.; a storage device 1003 including, for example, a magnetic tape, a hard disk, etc.; and a communication device 1009. The communication device 1009 can allow the control device of the air conditioner to communicate wirelessly or wired with other devices to exchange data. Although the control device of the air conditioner with various systems is shown in the figure, it should be understood that it is not required to implement or have all the systems shown. More or fewer systems can be implemented or provided alternatively.

[0149] In particular, according to the embodiments disclosed in the present application, the process described above with reference to the flowchart can be implemented as a computer software program. For example, the embodiments disclosed in the present application include a computer program product, which includes a computer program carried on a computer-readable medium, and the computer program includes a program code for executing the method shown in the flowchart. In such an embodiment, the computer program can be downloaded and installed from a network through a communication device, or installed from a storage device 1003, or installed from a ROM 1002. When the computer program is executed by the processing device 1001, the above-mentioned functions defined in the method of the embodiment disclosed in the present application are executed.

[0150] The control device of the air conditioner provided by the present application adopts the control method of the air conditioner in the above embodiment, which can solve the technical problem of poor cooling efficiency of the air conditioner under high temperature environment conditions. Compared with the prior art, the beneficial effects of the control device of the air conditioner provided by the present application are the same as the beneficial effects of the control device of the air conditioner provided by the above embodiment, and other technical features in the control device of the air conditioner are the same as the features disclosed in the method of the previous embodiment, which will not be repeated here.

[0151] It should be understood that the various parts disclosed in this application can be implemented by hardware, software, firmware or a combination thereof. In the description of the above embodiments, specific features, structures, materials or characteristics can be combined in any one or more embodiments or examples in a suitable manner.

[0152] 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.

[0153] The present application provides a computer-readable storage medium having computer-readable program instructions (ie, computer programs) stored thereon, and the computer-readable program instructions are used to execute the control method of the air conditioner in the above-mentioned embodiment.

[0154] The computer-readable storage medium provided in the present application may be, for example, a USB flash drive, but is not limited to electrical, magnetic, optical, electromagnetic, infrared, or semiconductor systems, systems or devices, or any combination of the above. More specific examples of computer-readable storage media may include, but are not limited to: an electrical connection with one or more wires, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the above. In this embodiment, the computer-readable storage medium may be any tangible medium containing or storing a program that can be used by or in combination with an instruction execution system, system or device. The program code contained on the computer-readable storage medium may be transmitted using any appropriate medium, including but not limited to: wires, optical cables, RF (Radio Frequency), etc., or any suitable combination of the above.

[0155] The computer-readable storage medium may be included in the control device of the air conditioner; or may exist independently without being installed in the control device of the air conditioner.

[0156] The computer-readable storage medium carries one or more programs, and when the one or more programs are executed by the control device of the air conditioner, the control device of the air conditioner: determines whether a first threshold condition is satisfied based on the outdoor heat exchanger coil temperature, and determines whether a second threshold condition is satisfied based on the compressor exhaust temperature;

[0157] If the first threshold condition is satisfied and / or the second threshold condition is satisfied, determining a corrected indoor temperature based on the indoor temperature;

[0158] If the indoor corrected temperature meets the temperature condition, the stop valve is controlled to be adjusted to an initial opening.

[0159] Computer program code for performing the operations of the present application may be written in one or more programming languages ​​or a combination thereof, including object-oriented programming languages ​​such as Java, Smalltalk, C++, and conventional procedural programming languages ​​such as "C" or similar programming languages. The program code may be executed entirely on the user's computer, partially on the user's computer, as a separate software package, partially on the user's computer and partially on a remote computer, or entirely on a remote computer or server. In the case of a remote computer, the remote computer may be connected to the user's computer through any type of network, including a local area network (LAN) or a wide area network (WAN), or may be connected to an external computer (e.g., via the Internet using an Internet service provider).

[0160] The flow chart and block diagram in the accompanying drawings illustrate the possible architecture, function and operation of the system, method and computer program product according to various embodiments of the present application. In this regard, each square box in the flow chart or block diagram can represent a module, a program segment or a part of a code, and the module, the program segment or a part of the code contains one or more executable instructions for realizing the specified logical function. It should also be noted that in some alternative implementations, the functions marked in the square box can also occur in a sequence different from that marked in the accompanying drawings. For example, two square boxes represented in succession can actually be executed substantially in parallel, and they can sometimes be executed in the opposite order, depending on the functions involved. It should also be noted that each square box in the block diagram and / or flow chart, and the combination of the square boxes in the block diagram and / or flow chart can be implemented with a dedicated hardware-based system that performs a specified function or operation, or can be implemented with a combination of dedicated hardware and computer instructions.

[0161] The modules involved in the embodiments described in this application may be implemented by software or hardware, wherein the name of the module does not constitute a limitation on the unit itself in some cases.

[0162] The readable storage medium provided by the present application is a computer-readable storage medium, which stores computer-readable program instructions (i.e., computer programs) for executing the control method of the air conditioner, and can solve the technical problem of poor cooling efficiency of the air conditioner under high temperature environment conditions. Compared with the prior art, the beneficial effects of the computer-readable storage medium provided by the present application are the same as the beneficial effects of the control method of the air conditioner provided by the above embodiment, and will not be described in detail here.

[0163] An embodiment of the present application provides a computer program product, including a computer program, which implements the steps of the above-mentioned air conditioner control method when executed by a processor.

[0164] The computer program product provided by the present application can solve the technical problem of poor cooling efficiency of the air conditioner under high temperature environment conditions. Compared with the prior art, the beneficial effects of the computer program product provided by the embodiment of the present application are the same as the beneficial effects of the air conditioner control method provided by the above embodiment, which will not be repeated here.

[0165] The above are only preferred embodiments of the present application, and are not intended to limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent processing scope of the present application.

Claims

1. A method for controlling an air conditioner, characterized in that: The air conditioner comprises a compressor, a four-way valve, an outdoor heat exchanger and an indoor heat exchanger connected in sequence, the compressor comprises a compression chamber and a cooling channel isolated from each other, the exhaust port and the air intake port of the compression chamber are both connected to the four-way valve, the first side of the outdoor heat exchanger is connected to the four-way valve, the other side of the outdoor heat exchanger is provided with a first branch, the first branch is connected to the stop valve, the cooling channel and the air intake in sequence, the first branch is provided with a throttling device, and the control method of the air conditioner comprises: Determining whether a first threshold condition is satisfied based on the outdoor heat exchanger coil temperature, and determining whether a second threshold condition is satisfied based on the compressor exhaust temperature; wherein, If the outdoor heat exchanger coil temperature is greater than a first threshold, determining that the first threshold condition is met; determining an exhaust temperature correction value of the compressor based on the compressor exhaust temperature; If the exhaust temperature correction value is greater than a second threshold, determining that the second threshold condition is met; If the first threshold condition is satisfied and / or the second threshold condition is satisfied, determining a corrected indoor temperature based on the indoor temperature; If the indoor corrected temperature meets the temperature condition, the stop valve is controlled to be adjusted to the initial opening; determining a target opening of the throttling device based on a correction value of the exhaust temperature of the compressor and a temperature of the outdoor heat exchanger coil; The throttling device is adjusted to the target opening.

2. The air conditioner control method according to claim 1, characterized in that: After the step of determining the indoor corrected temperature based on the indoor temperature, the method further comprises: If the indoor corrected temperature does not meet the temperature condition, the compressor is controlled to perform a frequency reduction process.

3. The air conditioner control method according to claim 1, characterized in that: The step of determining the target opening of the throttling device based on the exhaust temperature correction value of the compressor and the outdoor heat exchanger coil temperature comprises: If the exhaust temperature correction value is greater than the coefficient threshold, and the outdoor heat exchanger coil temperature is greater than the coil temperature threshold, the target opening is determined to be the first opening; or, If the exhaust temperature correction value is greater than the coefficient threshold, and the outdoor heat exchanger coil temperature is less than the coil temperature threshold, the target opening is determined to be the second opening; or, If the exhaust temperature correction value is less than the coefficient threshold, and the outdoor heat exchanger coil temperature is greater than the coil temperature threshold, the target opening is determined to be the third opening; or, If the exhaust temperature correction value is less than the coefficient threshold, and the outdoor heat exchanger coil temperature is less than the coil temperature threshold, the target opening degree is determined to be a fourth opening degree.

4. The air conditioner control method according to claim 3, characterized in that: The first opening is greater than the second opening, the second opening is greater than the third opening, and the third opening is greater than the fourth opening.

5. The air conditioner control method according to claim 1, characterized in that: After the step of adjusting the throttling device to the target opening, the method further comprises: If the operating time of the throttling device after being adjusted to the target opening meets the time threshold, the steps of determining whether the first threshold condition is met based on the outdoor heat exchanger coil temperature and determining whether the second threshold condition is met based on the compressor exhaust temperature are re-executed.

6. The air conditioner control method according to claim 1, characterized in that: After the steps of determining whether the first threshold condition is met based on the outdoor heat exchanger coil temperature and determining whether the second threshold condition is met based on the compressor exhaust temperature, the method further comprises: If the first threshold condition is not met, or the second threshold condition is not met, the compressor is controlled to maintain the current operating state.

7. A control device for an air conditioner, characterized in that: The control device of the air conditioner includes: a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the computer program is configured to implement the steps of the control method of the air conditioner according to any one of claims 1 to 6.

8. A storage medium, characterized in that: The storage medium is a computer-readable storage medium having a computer program stored thereon. When the computer program is executed by a processor, the steps of the air conditioner control method according to any one of claims 1 to 6 are implemented.

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