Air conditioner control method and device, storage medium, program product and chip system

Abstract

The invention relates to an air conditioner control method and device, a storage medium, a program product and a chip system. The air conditioner control method comprises the steps that the coil pipe temperature of an indoor heat exchanger in the heating process is obtained; under the condition that the temperature of the coil pipe is larger than or equal to a first temperature threshold value, overheat protection shutdown is triggered, and the shutdown duration is recorded; and under the condition that the shutdown duration is smaller than a preset duration threshold value, if it is determined that the current coil pipe temperature is smaller than a second temperature threshold value, the air conditioner is controlled to be restarted, the shutdown duration of overheating protection can be effectively shortened, long-time shutdown caused by overheating protection can be avoided, and then the use experience of an air conditioner user can be improved.

Description

Technical Field

[0001] The present disclosure relates to the field of air conditioning control, and in particular to an air conditioning control method, device, storage medium, program product and chip system. Background Art

[0002] With the improvement of living standards, users' requirements for indoor ambient temperature comfort are also increasing. For example, when the outdoor temperature is not very low (for example, 18℃~30℃), users may choose to turn on the heating. At this time, since the refrigerant absorbs more heat on the outdoor side, the compressor exhaust temperature and pressure are also higher, so the air conditioner is more likely to frequently trigger the heating overload protection shutdown. In addition, when the air conditioner filter is seriously dusty or the operation time is too long, it will also cause the heating overload protection to be frequently triggered, resulting in shutdown. Usually, after the shutdown due to overheating protection, it takes several minutes to start again, so it is easy to affect the user experience. Summary of the invention

[0003] In order to overcome the problems existing in the related art, the present disclosure provides an air conditioning control method, device, storage medium, program product and chip system.

[0004] According to a first aspect of an embodiment of the present disclosure, there is provided an air conditioning control method, comprising:

[0005] Get the coil temperature of the indoor heat exchanger during heating;

[0006] When the coil temperature is greater than or equal to the first temperature threshold, overheat protection shutdown is triggered and shutdown duration is recorded;

[0007] When the shutdown duration is less than a preset duration threshold, if it is determined that the current coil temperature is less than a second temperature threshold, the air conditioner is controlled to restart, wherein the second temperature threshold is less than the first temperature threshold.

[0008] Optionally, the method further comprises:

[0009] After the overheat protection shutdown is triggered, the number of overheat protection shutdowns is recorded;

[0010] The air conditioner is controlled to restart according to the shutdown duration and the number of overheat protection shutdowns.

[0011] Optionally, controlling the air conditioner to restart according to the shutdown duration and the number of overheat protection shutdowns includes:

[0012] In the case where the shutdown duration is greater than or equal to the preset duration threshold, if it is determined that the number of overheat protection shutdowns is greater than the preset number threshold, obtaining historical operating parameters before triggering the overheat protection shutdown;

[0013] The air conditioner is controlled to restart according to the historical operating parameters.

[0014] Optionally, after the air conditioner is restarted, the method further includes:

[0015] When it is determined that the current operating gear of the external fan is not the lowest operating gear of the external fan, the coil temperature is adjusted by a preset external fan operating gear adjustment strategy.

[0016] Optionally, the preset external fan operating gear adjustment strategy includes:

[0017] Determine whether the current operating gear of the external fan is the lowest operating gear of the external fan;

[0018] When it is determined that the operating gear of the external fan is the lowest operating gear of the external fan, taking the lowest operating gear of the external fan as the target operating gear of the external fan;

[0019] When it is determined that the external fan operating gear is not the lowest external fan operating gear, the external fan operating gear is adjusted down by one gear to obtain an updated external fan operating gear, and after obtaining the reduced external fan operating gear, the first target coil temperature within the preset detection period is obtained. When the first target coil temperature is greater than or equal to the third temperature threshold, if it is determined that the first target coil temperature is less than the fourth temperature threshold, the step of determining whether the current external fan operating gear is the lowest external fan operating gear is executed again, wherein the fourth temperature threshold is greater than the third temperature threshold, and the fourth temperature threshold is less than the first temperature threshold.

[0020] Optionally, the preset external fan operating gear adjustment strategy further includes:

[0021] In the case where the first target coil temperature is greater than or equal to the third temperature threshold, if it is determined that the first target coil temperature is greater than or equal to the fourth temperature threshold, the lowest outdoor fan operating gear is used as the target outdoor fan operating gear;

[0022] When the first target coil temperature is less than the third temperature threshold, the reduced operating gear of the outdoor fan is used as the target operating gear of the outdoor fan.

[0023] Optionally, the method further comprises:

[0024] When it is determined that the current operating gear of the external fan is the lowest operating gear of the external fan, the opening of the expansion valve is controlled to increase by a preset opening value.

[0025] Optionally, the method further comprises:

[0026] When it is determined that the current operating gear of the external fan is the lowest operating gear of the external fan, the coil temperature is adjusted by a preset internal fan adjustment strategy.

[0027] Optionally, the method further comprises:

[0028] When it is determined that the current external fan operating gear is the lowest external fan operating gear, if it is determined that the opening of the expansion valve is greater than or equal to a preset opening value threshold, the coil temperature is adjusted using a preset internal fan adjustment strategy.

[0029] Optionally, the preset internal fan operating gear adjustment strategy includes:

[0030] Determine whether the current internal fan operating gear is the maximum internal fan operating gear;

[0031] In the case where it is determined that the operating gear of the internal fan is the maximum operating gear of the internal fan, taking the maximum operating gear of the internal fan as the target operating gear of the internal fan;

[0032] When it is determined that the indoor fan operating gear is not the maximum indoor fan operating gear, the indoor fan operating gear is increased by one gear, and after obtaining the increased indoor fan operating gear, at the second target coil temperature within the preset detection cycle, when the second target coil temperature is greater than or equal to the fifth temperature threshold, the step of determining whether the current indoor fan operating gear is the maximum indoor fan operating gear is executed again.

[0033] Optionally, the preset internal fan operating gear adjustment strategy further includes:

[0034] When the second target coil temperature is less than the fifth temperature threshold, the increased operating gear of the indoor fan is used as the target operating gear of the indoor fan.

[0035] Optionally, controlling the air conditioner to restart according to the shutdown duration and the number of overheat protection shutdowns includes:

[0036] In the case where the shutdown duration is greater than or equal to the preset duration threshold, if it is determined that the number of overheat protection shutdowns is less than or equal to the preset number threshold, obtaining preset initial operating parameters;

[0037] The air conditioner is controlled to restart according to the initial operating parameters.

[0038] According to a second aspect of an embodiment of the present disclosure, there is provided an air conditioning control device, characterized in that it includes:

[0039] A first acquisition module is configured to acquire the coil temperature of the indoor heat exchanger during heating;

[0040] A first determination module is configured to trigger an overheat protection shutdown when the coil temperature is greater than or equal to a first temperature threshold, and record the shutdown duration;

[0041] The second determination module is configured to control the air conditioner to restart if it is determined that the current coil temperature is less than a second temperature threshold when the shutdown time is less than a preset time threshold, wherein the second temperature threshold is less than the first temperature threshold.

[0042] Optionally, the device further comprises:

[0043] A recording module, configured to record the number of overheat protection shutdowns after the overheat protection shutdown is triggered;

[0044] The control module is configured to control the restart of the air conditioner according to the shutdown duration and the number of overheat protection shutdowns.

[0045] Optionally, the control module is configured to:

[0046] In the case where the shutdown duration is greater than or equal to the preset duration threshold, if it is determined that the number of overheat protection shutdowns is greater than the preset number threshold, obtaining historical operating parameters before triggering the overheat protection shutdown;

[0047] The air conditioner is controlled to restart according to the historical operating parameters.

[0048] Optionally, after the air conditioner is restarted, the device further includes:

[0049] The first regulating module is configured to regulate the coil temperature by a preset external fan operating gear adjustment strategy when it is determined that the current external fan operating gear is not the lowest external fan operating gear.

[0050] Optionally, the preset external fan operating gear adjustment strategy includes:

[0051] Determine whether the current operating gear of the external fan is the lowest operating gear of the external fan;

[0052] When it is determined that the operating gear of the external fan is the lowest operating gear of the external fan, taking the lowest operating gear of the external fan as the target operating gear of the external fan;

[0053] When it is determined that the external fan operating gear is not the lowest external fan operating gear, the external fan operating gear is adjusted down by one gear to obtain an updated external fan operating gear, and after obtaining the reduced external fan operating gear, the first target coil temperature within the preset detection period is obtained. When the first target coil temperature is greater than or equal to the third temperature threshold, if it is determined that the first target coil temperature is less than the fourth temperature threshold, the step of determining whether the current external fan operating gear is the lowest external fan operating gear is executed again, wherein the fourth temperature threshold is greater than the third temperature threshold, and the fourth temperature threshold is less than the first temperature threshold.

[0054] Optionally, the preset external fan operating gear adjustment strategy further includes:

[0055] In the case where the first target coil temperature is greater than or equal to the third temperature threshold, if it is determined that the first target coil temperature is greater than or equal to the fourth temperature threshold, the lowest outdoor fan operating gear is used as the target outdoor fan operating gear;

[0056] When the first target coil temperature is less than the third temperature threshold, the reduced operating gear of the outdoor fan is used as the target operating gear of the outdoor fan.

[0057] Optionally, the device further comprises:

[0058] The second regulating module is configured to control the opening of the expansion valve to increase a preset opening value when it is determined that the current operating gear of the external fan is the lowest operating gear of the external fan.

[0059] Optionally, the method further comprises:

[0060] The third regulating module is configured to regulate the coil temperature by a preset internal fan adjustment strategy when it is determined that the current external fan operating gear is the lowest external fan operating gear.

[0061] Optionally, the device further comprises:

[0062] The fourth regulating module is configured to regulate the coil temperature through a preset internal fan adjustment strategy when it is determined that the current external fan operating gear is the lowest external fan operating gear and if it is determined that the opening of the expansion valve is greater than or equal to a preset opening value threshold.

[0063] Optionally, the preset internal fan operating gear adjustment strategy includes:

[0064] Determine whether the current internal fan operating gear is the maximum internal fan operating gear;

[0065] In the case where it is determined that the operating gear of the internal fan is the maximum operating gear of the internal fan, taking the maximum operating gear of the internal fan as the target operating gear of the internal fan;

[0066] When it is determined that the indoor fan operating gear is not the maximum indoor fan operating gear, the indoor fan operating gear is increased by one gear, and after obtaining the increased indoor fan operating gear, at the second target coil temperature within the preset detection cycle, when the second target coil temperature is greater than or equal to the fifth temperature threshold, the step of determining whether the current indoor fan operating gear is the maximum indoor fan operating gear is executed again.

[0067] Optionally, the preset internal fan operating gear adjustment strategy further includes:

[0068] When the second target coil temperature is less than the fifth temperature threshold, the increased operating gear of the indoor fan is used as the target operating gear of the indoor fan.

[0069] Optionally, the control module is configured to:

[0070] In the case where the shutdown duration is greater than or equal to the preset duration threshold, if it is determined that the number of overheat protection shutdowns is less than or equal to the preset number threshold, obtaining preset initial operating parameters;

[0071] The air conditioner is controlled to restart according to the initial operating parameters.

[0072] According to a third aspect of an embodiment of the present disclosure, there is provided an air conditioning control device, comprising:

[0073] processor;

[0074] a memory for storing processor-executable instructions;

[0075] Wherein, the processor is configured to implement the steps of the method described in the first aspect above.

[0076] According to a fourth aspect of an embodiment of the present disclosure, there is provided 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 method described in the first aspect above are implemented.

[0077] According to a fifth aspect of an embodiment of the present disclosure, a computer program product is provided, including a computer program, which implements the steps of the method described in the first aspect above when executed by a processor.

[0078] According to the sixth aspect of an embodiment of the present disclosure, a chip system is provided, which includes a processing unit and an interface circuit, wherein the processing unit obtains program instructions through the interface circuit, and the program instructions are executed by the processing unit, and the processing unit is used to execute the steps of the method described in the first aspect above.

[0079] The technical solution provided by the embodiments of the present disclosure may have the following beneficial effects:

[0080] After the overheat protection shutdown is triggered because the coil temperature of the indoor heat exchanger is greater than or equal to the first temperature threshold, the shutdown time can be recorded; and when the shutdown time is less than the preset time threshold, if it is determined that the current coil temperature is less than the second temperature threshold, the air conditioner is controlled to restart, wherein the second temperature threshold is less than the first temperature threshold, which can effectively avoid long-term shutdown due to overheat protection, thereby effectively improving the user experience of air conditioner users.

[0081] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0082] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and, together with the description, serve to explain the principles of the present disclosure.

[0083] Figure 1 is a flow chart of an air conditioning control method according to an exemplary embodiment;

[0084] Figure 2 is based on Figure 1 A flow chart of an air conditioning control method shown in the illustrated embodiment;

[0085] Figure 3 is based on Figure 2 A flow chart of an air conditioning control method shown in the illustrated embodiment;

[0086] Figure 4 is based on Figure 3 A flow chart of an air conditioning control method shown in the illustrated embodiment;

[0087] Figure 5 is based on Figure 2 A flow chart of another air conditioning control method shown in the illustrated embodiment;

[0088] Figure 6 is based on Figure 5 A flow chart of an air conditioning control method shown in the illustrated embodiment;

[0089] Figure 7 is based on Figure 5A flow chart of another air conditioning control method shown in the illustrated embodiment;

[0090] Figure 8 is a block diagram of an air conditioning control device shown in an exemplary embodiment of the present disclosure;

[0091] Fig. 9 is based on Figure 8 A block diagram of an air conditioning control device shown in the illustrated embodiment;

[0092] Fig.10 is a block diagram of a chip system according to an exemplary embodiment. DETAILED DESCRIPTION

[0093] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present disclosure. Instead, they are merely examples of devices and methods consistent with some aspects of the present disclosure as detailed in the appended claims.

[0094] It should be noted that all actions of acquiring signals, information or data in the present disclosure are carried out in compliance with the relevant data protection laws and policies of the country where the device is located and with the authorization given by the owner of the corresponding device.

[0095] Before describing the specific implementation of the present disclosure in detail, the application scenario of the present disclosure is first described as follows. The present disclosure can be applied to the heating process of the air conditioner, especially for the scenario where the air conditioner is easily triggered to shut down due to the heating overload protection. When the air conditioner is heating, the compressor first pressurizes the low-pressure gaseous refrigerant to convert it into a high-temperature and high-pressure gas. Subsequently, the high-temperature and high-pressure gas releases a large amount of heat through the indoor heat exchanger (condenser), and the heat is transferred to the indoor air, thereby achieving an increase in the indoor temperature. At this time, the original high-temperature and high-pressure gas has been converted into a liquid refrigerant; next, the liquid refrigerant is decompressed through the throttling device (expansion valve) and enters the heat exchanger (for example, evaporator) in the outdoor unit. In the evaporator, the refrigerant absorbs the heat of the outdoor air through evaporation and gasification, and flows into the compressor again. At this point, a complete heating cycle is completed. In the heating process, the heat is transported by the circulation of the refrigerant, that is, the outdoor heat is transported to the indoor. The air conditioner achieves a continuous increase in the indoor temperature by repeating this process.

[0096] However, when the outdoor temperature is not very low (for example, 18℃~30℃), when the heating is turned on, the refrigerant absorbs more heat on the outdoor side, and the compressor exhaust temperature and pressure are also higher, resulting in a higher indoor coil temperature. The probability of overload shutdown caused by excessive indoor coil temperature will also increase greatly, so the air conditioner is more likely to frequently trigger the heating overload protection shutdown. In addition, when the air conditioner has been used for too long, or the filter is seriously dusty, during the heating operation, it is easy for the filter to be dirty and clogged, resulting in poor return air flow, thereby affecting the heat exchange of the indoor heat exchanger, and causing frequent shutdowns due to the triggering of the heating overload protection. Usually, after the shutdown due to overheating protection, it takes several minutes to start again, so it is easy to affect the user experience.

[0097] In order to solve the above technical problems, the present disclosure provides an air-conditioning control method, device, storage medium, program product and chip system. The air-conditioning control method can, after the overheating protection shutdown is triggered because the coil temperature of the indoor heat exchanger is greater than or equal to a first temperature threshold, when the shutdown time is less than a preset time threshold, if it is determined that the current coil temperature is less than a second temperature threshold, control the air conditioner to restart, wherein the second temperature threshold is less than the first temperature threshold, which can effectively avoid long-term shutdown due to overheating protection, thereby effectively improving the user experience of the air-conditioning user.

[0098] Figure 1 is a flow chart of an air conditioning control method according to an exemplary embodiment; Figure 1 As shown, the air conditioning control method may include:

[0099] Step 101, obtaining the coil temperature of the indoor heat exchanger during the heating process.

[0100] The temperature of the coil can be collected by a temperature sensor disposed on the coil, and the coil can be understood as a pipe used for heat exchange in the indoor heat exchanger.

[0101] Step 102: When the coil temperature is greater than or equal to a first temperature threshold, an overheat protection shutdown is triggered and the shutdown duration is recorded.

[0102] The overheat protection shutdown can be understood as the air conditioner compressor shutdown action caused by overheat protection. The value range of the first temperature threshold T1 can be 60-65°C.

[0103] Step 103a, when the downtime is less than a preset time threshold, if it is determined that the current coil temperature is less than a second temperature threshold, control the air conditioner to restart.

[0104] Among them, the second temperature threshold is less than the first temperature threshold, and the preset time threshold can be 2 minutes, 2.5 minutes or 3 minutes, etc.

[0105] In this step: when the downtime is less than the preset time threshold, if it is determined that the current coil temperature is less than the second temperature threshold, the initial operating parameters can be obtained from the preset configuration file, and the air conditioner can be controlled to restart according to the initial operating parameters.

[0106] It should be noted that the initial operating parameters may include one or more of the operating gear of the external fan, the opening of the expansion valve and the operating gear of the internal fan. The preset configuration file may be a configuration file pre-stored when the air conditioner leaves the factory, and the configuration file may include the initial operating parameter information when the air conditioner is started. The second temperature threshold T2 can be understood as the safety threshold of the coil temperature when the compressor restarts. When the temperature of the inner tube of the compressor is lower than T2, it indicates that the coil temperature has enough safety margin from the shutdown temperature T1, and the compressor can be restarted. The value range of the second temperature threshold T2 can be 50~52℃.

[0107] The above technical solution can, after the overheat protection shutdown is triggered because the coil temperature of the indoor heat exchanger is greater than or equal to the first temperature threshold, when the shutdown time is less than the preset time threshold, if it is determined that the current coil temperature is less than the second temperature threshold, control the air conditioner to restart, which can effectively avoid long-term shutdown due to overheat protection, thereby effectively improving the user experience of air conditioner users.

[0108] Figure 2 is based on Figure 1 The embodiment shown is a flow chart of an air conditioning control method; Figure 2 As shown, the method may also include:

[0109] Step 103b, after the overheat protection shutdown is triggered, record the number of overheat protection shutdowns;

[0110] Step 104, controlling the air conditioner to restart according to the shutdown duration and the number of shutdowns for overheat protection.

[0111] A possible implementation is: when the shutdown duration is greater than or equal to the preset duration threshold, if it is determined that the number of overheating protection shutdowns is less than or equal to the preset number threshold, the initial operating parameters are obtained from the preset configuration file, and the air conditioner is controlled to restart according to the initial operating parameters.

[0112] The preset number threshold may be 3, 4 or 5, etc.

[0113] Another possible implementation is, when the shutdown duration is greater than or equal to a preset duration threshold, if it is determined that the number of overheat protection shutdowns is greater than a preset number threshold, obtain the historical operating parameters before triggering the overheat protection shutdown; and control the air conditioner to restart according to the historical operating parameters.

[0114] The historical operating parameters may also include one or more of the operating gear of the external fan, the opening of the expansion valve and the operating gear of the internal fan.

[0115] The above technical solution can control the restart of the air conditioner according to the shutdown duration and the number of overheat protection shutdowns after the overheat protection shutdown is triggered because the coil temperature of the indoor heat exchanger is greater than or equal to the first temperature threshold. Compared with the shutdown start-up procedure in the related art, it can effectively shorten the startup response time, thereby effectively avoiding the problem of poor user experience caused by long-term shutdown due to overheat protection.

[0116] Optionally, after the air conditioner is restarted, the method further includes:

[0117] When it is determined that the current operating gear of the external fan is not the lowest operating gear of the external fan, the coil temperature is adjusted by a preset external fan operating gear adjustment strategy.

[0118] The preset external fan operating gear adjustment strategy includes:

[0119] Determine whether the current operating gear of the external fan is the lowest operating gear of the external fan;

[0120] When it is determined that the operating gear of the external fan is the lowest operating gear of the external fan, taking the lowest operating gear of the external fan as the target operating gear of the external fan;

[0121] When it is determined that the external fan operating gear is not the lowest external fan operating gear, the external fan operating gear is adjusted down by one gear to obtain an updated external fan operating gear, and after obtaining the reduced external fan operating gear, the first target coil temperature within the preset detection period is obtained. When the first target coil temperature is greater than or equal to the third temperature threshold, if it is determined that the first target coil temperature is less than the fourth temperature threshold, the step of determining whether the current external fan operating gear is the lowest external fan operating gear is executed again, wherein the fourth temperature threshold is greater than the third temperature threshold, and the fourth temperature threshold is less than the first temperature threshold.

[0122] In some embodiments, the preset external fan operating gear adjustment strategy may further include:

[0123] When the first target coil temperature is greater than or equal to the third temperature threshold, if it is determined that the first target coil temperature is greater than or equal to the fourth temperature threshold, the lowest external fan operating gear is used as the target external fan operating gear;

[0124] When the first target coil temperature is less than the third temperature threshold, the adjusted-down external fan operating gear is used as the target external fan operating gear.

[0125] Among them, the magnitude relationship of the first temperature threshold T1, the second temperature threshold T2, the third temperature threshold T3, the fourth temperature threshold T4, and the fifth temperature threshold T5 can be: T2 < T3 < T4 < T5 < T1. Optionally, among them, the value range of the third temperature threshold T3 is 54 - 55 °C; the value range of the fourth temperature threshold T4 is 56 - 57 °C; the value range of the fifth temperature threshold T5 can be 58 - 59 °C.

[0126] In this way, after the air conditioner restarts, the coil temperature can be adjusted through the preset external fan operating gear adjustment strategy, so as to effectively avoid the coil temperature of the air conditioner from overheating again, and thus effectively avoid the air conditioner from shutting down due to overheating again.

[0127] Optionally, the method further includes:

[0128] When it is determined that the current external fan operating gear is the lowest external fan operating gear, control the opening of the expansion valve to increase by a preset opening value.

[0129] In this way, after the air conditioner restarts, the coil temperature can be adjusted through the opening of the expansion valve, so as to effectively avoid the coil temperature of the air conditioner from overheating again, and thus effectively avoid the air conditioner from shutting down due to overheating again.

[0130] Optionally, the method further includes:

[0131] When it is determined that the current external fan operating gear is the lowest external fan operating gear, adjust the coil temperature through the preset internal fan adjustment strategy.

[0132] Optionally, the method further includes:

[0133] When it is determined that the current external fan operating gear is the lowest external fan operating gear, if it is determined that the opening of the expansion valve is greater than or equal to the preset opening value threshold, adjust the coil temperature through the preset internal fan adjustment strategy.

[0134] Among them, the preset internal fan operating gear adjustment strategy includes:

[0135] Determine whether the current internal fan operating gear is the maximum internal fan operating gear;

[0136] When it is determined that the operating gear of the internal fan is the maximum operating gear of the internal fan, the maximum operating gear of the internal fan is used as the target operating gear of the internal fan;

[0137] When it is determined that the operating gear of the internal fan is not the maximum operating gear of the internal fan, the operating gear of the internal fan is increased by one gear, and after increasing the operating gear of the internal fan, the second target coil temperature within a preset detection period is obtained. When the second target coil temperature is greater than or equal to the fifth temperature threshold, the step of determining whether the current operating gear of the internal fan is the maximum operating gear of the internal fan is executed again.

[0138] In some embodiments, the preset internal fan operating gear adjustment strategy may further include:

[0139] When the second target coil temperature is less than the fifth temperature threshold, the increased operating gear of the internal fan is used as the target operating gear of the internal fan.

[0140] In this way, after the air conditioner is restarted, the coil temperature can be adjusted through the preset internal fan operating gear adjustment strategy, so that the overheating of the air conditioner coil temperature can be effectively avoided, and the shutdown of the air conditioner due to overheating can be effectively avoided.

[0141] Figure 3 is according to Figure 2 Another flowchart of an air conditioner control method shown in the illustrated embodiment, as Figure 3 shown, after Figure 2 controlling the restart of the air conditioner according to the shutdown duration and the number of overheat protection shutdowns in step 104 as described above, the method may further include:

[0142] Step 105, determining whether the current operating gear of the external fan is the lowest operating gear of the external fan.

[0143] Among them, when it is determined that the operating gear of the external fan is not the lowest operating gear of the external fan, step 106 is executed. In one embodiment, when it is determined that the operating gear of the external fan is the lowest operating gear of the external fan, steps 113 to 115 are executed; in another embodiment, when it is determined that the operating gear of the external fan is the lowest operating gear of the external fan, steps 117 to 119 are executed.

[0144] It should be noted that different external fan gears correspond to different speeds, as shown in Table 1 below: The 1-7 gears of the external fan are the conventional operating gears of the air conditioner, and the external fan min gear (i.e., the lowest gear) is only enabled when the heating overload protection is triggered. Among them, the external fan speed: R_min < R_ext1 < R_ext2 < R_ext3 < R_ext4 < R_ext5 < R_ext6 < R_ext7.

[0145]

[0146] Table 1

[0147] Step 106, lowering the operating gear of the external fan by one gear to obtain an updated operating gear of the external fan.

[0148] Among them, lowering the operating gear of the external fan by one gear can be understood as reducing the rotation speed of the external fan.

[0149] Step 107, determining whether the coil temperature at the updated outdoor fan operating gear is less than a third temperature threshold value within a first preset detection period.

[0150] Among them, within the first preset detection cycle, if it is determined that the coil temperature at the updated external fan operating gear is less than the third temperature threshold, step 108 is executed; within the first preset detection cycle, if it is determined that the coil temperature at the updated external fan operating gear is greater than or equal to the third temperature threshold, step 109 is executed.

[0151] It should be noted that the value range of the third temperature threshold T3 may be 54-55°C.

[0152] Step 108, controlling the air conditioner to continue operating according to the updated external fan operating gear.

[0153] Step 109: Determine whether the coil temperature at the updated outdoor fan operating gear is greater than or equal to a fourth temperature threshold value within the first preset detection period.

[0154] Among them, when it is determined that the coil temperature at the updated external fan operating gear is greater than or equal to the fourth temperature threshold, step 110 is executed; when it is determined that the coil temperature at the updated external fan operating gear is less than the fourth temperature threshold, step 105 is executed again to determine whether the current external fan operating gear is the lowest external fan operating gear.

[0155] It should be noted that the first preset detection period can be understood as the time for detecting system stability, for example, it can be 2 minutes, 3 minutes or 4 minutes, etc. The value range of the fourth temperature threshold T4 can be 56-57°C.

[0156] Step 110, adjusting the operating gear of the external fan to the lowest operating gear of the external fan.

[0157] Step 111, determining whether the coil temperature at the lowest outdoor fan operating gear within a second preset detection period is less than a fourth temperature threshold.

[0158] The second preset detection period may be the same as or different from the first preset detection period.

[0159] In this step, when it is determined that the coil temperature at the lowest outdoor fan operating gear is less than the fourth temperature threshold, step 112 is executed; when it is determined that the coil temperature at the lowest outdoor fan operating gear is greater than or equal to the fourth temperature threshold, step 113 is executed.

[0160] Step 112, controlling the air conditioner to continue operating at the lowest outdoor fan operating gear.

[0161] Step 113, controlling the expansion valve opening to increase to a first preset opening value to obtain a first expansion valve opening.

[0162] Step 114, obtaining a first coil temperature within a third preset detection period after the expansion valve opening is increased by a first preset opening value.

[0163] The third preset detection period may be the same as or different from the first preset detection period and / or the second preset detection period.

[0164] Step 115, determining whether the first coil temperature is less than a fourth temperature threshold.

[0165] In one implementation, when it is determined that the first coil temperature is less than a fourth temperature threshold, step 116 is performed; when it is determined that the first coil temperature is greater than the fourth temperature threshold, step 117 is performed.

[0166] In another embodiment, when it is determined that the first coil temperature is greater than or equal to a fourth temperature threshold, the target internal fan operating gear is determined according to a preset internal fan operating gear adjustment strategy, and the air conditioner is controlled to operate according to the lowest external fan operating gear, the first expansion valve opening and the target internal fan operating gear.

[0167] Step 116, controlling the air conditioner to continue operating according to the lowest outdoor fan operating gear and the first expansion valve opening.

[0168] Step 117, increasing the expansion valve opening by a second preset opening value to obtain a second expansion valve opening.

[0169] The first preset opening value and the second preset opening value may be the same or different.

[0170] Step 118, obtaining the second coil temperature within a fourth preset detection period after the expansion valve opening is increased by a second preset opening value.

[0171] Among them, the fourth preset detection period may be the same as one or more of the first preset detection period, the second preset detection period, and the third preset detection period, or may be different from all of the first preset detection period, the second preset detection period, and the third preset detection period.

[0172] Step 119: Determine that the temperature of the second coil is less than the fourth temperature threshold.

[0173] In this step, when it is determined that the temperature of the second coil is less than the fourth temperature threshold, step 120 is executed; when it is determined that the temperature of the second coil is greater than or equal to the fourth temperature threshold, step 121 is executed.

[0174] Step 120: Control the air conditioner to operate at the second expansion valve opening and the lowest external fan operation gear.

[0175] Step 121: Determine the target internal fan operation gear according to the preset internal fan operation gear adjustment strategy, and control the air conditioner to operate at the lowest external fan operation gear, the second expansion valve opening, and the target internal fan operation gear.

[0176] Exemplarily, the internal fan may be provided with gears from 1 to 7 and a max gear, and the max gear of the internal fan can be enabled when the heating overload protection is triggered. The internal fan speeds corresponding to different internal fan gears are different. As shown in Table 2, the internal fan operation gear can be N 内1 <N 内2 <N 内3 <N 内4 <N 内6 <N 内6 <N 内7 <N 内max ; Internal fan speed: R_internal1 < R_internal2 < R_internal3 < R_internal4 < R_internal5 < R_internal6 < R_internal7 < R_max.

[0177]

[0178] Table 2

[0179] In this step, the preset internal fan operation gear adjustment strategy can be as Figure 4 shown Figure 4 is a flowchart of an air conditioner control method shown in the embodiment according to Figure 3 This air conditioner control method may further include:

[0180] S11: Determine whether the current internal fan operation gear is the maximum internal fan operation gear;

[0181] Among them, the maximum internal fan operation gear can be N 内max, the identifier of the maximum internal fan operating gear can also be a number, a letter, or other preset characters. When the identifier of the maximum internal fan operating gear is a number, the level of the gear can be determined by the size of the number. When the identifier of the maximum internal fan operating gear is a character, a gear level order can be preset for each character. For example, it is preset that gear a is higher than gear b, gear b is higher than gear c, and gear a is the highest gear.

[0182] If it is determined that the internal fan operating gear is the maximum internal fan operating gear, execute S12; if it is determined that the internal fan operating gear is not the maximum internal fan operating gear, execute S13.

[0183] S12, use the maximum internal fan operating gear as the target internal fan operating gear.

[0184] S13, increase the internal fan operating gear by one level.

[0185] S14, obtain the temperature of the third coil within the fifth preset detection period after increasing the internal fan operating gear.

[0186] Among them, the fifth preset detection period can be the same as one or more of the first preset detection period, the second preset detection period, the third preset detection period, and the fourth preset detection period, or can be different from all of the first preset detection period, the second preset detection period, the third preset detection period, and the fourth preset detection period.

[0187] S15, determine whether the temperature of the third coil is greater than or equal to the fifth temperature threshold.

[0188] Among them, if the temperature of the third coil is greater than or equal to the fifth temperature threshold, execute S11 again; if the temperature of the third coil is less than the fifth temperature threshold, execute S16.

[0189] It should be noted that the magnitude relationship of the first temperature threshold T1, the second temperature threshold T2, the third temperature threshold T3, the fourth temperature threshold T4, and the fifth temperature threshold T5 can be: T2 < T3 < T4 < T5 < T1. Optionally, among them, the value range of the third temperature threshold T3 is 54 - 55 °C; the value range of the fourth temperature threshold T4 is 56 - 57 °C; the value range of the fifth temperature threshold T5 can be 58 - 59 °C.

[0190] S16, use the increased internal fan operating gear as the target internal fan operating gear.

[0191] The above technical solution can effectively reduce the coil temperature of the indoor heat exchanger in the air conditioner by adjusting the operating gear of the outdoor fan, the opening of the expansion valve and the operating gear of the indoor fan after the air conditioner is restarted, and can effectively reduce the frequency of air conditioning shutdown due to overheating protection, thereby reducing the impact of repeated shutdowns on the life of the air conditioner, which is conducive to further improving the stability and reliability of the system.

[0192] Figure 5 is based on Figure 2 The embodiment shown is a flow chart of another air conditioning control method, as shown in FIG. Figure 5 As shown, in Figure 2 After step 104, the method may further include:

[0193] Step 401: Increase the expansion valve opening by a third preset opening value to obtain a third expansion valve opening.

[0194] Step 402, obtaining the temperature of the fourth coil at the third expansion valve opening within a sixth preset detection cycle.

[0195] Step 403: determine whether the fourth coil temperature is less than a sixth temperature threshold.

[0196] In this step, when it is determined that the fourth coil temperature is less than the sixth temperature threshold, step 404 is executed, and when it is determined that the fourth coil temperature is greater than or equal to the sixth temperature threshold, step 405 is executed.

[0197] It should be noted that the value range of the sixth temperature threshold may be 56-57° C. The sixth temperature threshold may be equal to or different from the fourth temperature threshold.

[0198] Step 404, controlling the air conditioner to continue operating according to the opening degree of the third expansion valve.

[0199] Step 405 , determining a target external fan operating gear according to a preset external fan operating gear adjustment strategy, and controlling the air conditioner to continue operating according to the target external fan operating gear and the opening of the third expansion valve.

[0200] The preset external fan operation gear adjustment strategy can be as follows: Figure 6 As shown, Figure 6 is based on Figure 5 The embodiment shown is a flow chart of an air conditioning control method, such as Figure 6 As shown, Figure 5 The preset external fan operating gear adjustment strategy in step 405 may include:

[0201] S21, determining whether the current operating gear of the external fan is the lowest operating gear of the external fan;

[0202] When it is determined that the operating gear of the external fan is the lowest operating gear of the external fan, step S22 is executed; when it is determined that the operating gear of the external fan is not the lowest operating gear of the external fan, steps S23 to S25 are executed.

[0203] S22, taking the lowest operating gear position of the external fan as the target operating gear position of the external fan.

[0204] When it is determined that the operating gear of the external fan is not the lowest operating gear of the external fan,

[0205] S23, adjusting the operating gear of the external fan to a lower gear to obtain an updated operating gear of the external fan.

[0206] S24, obtaining the temperature of the fifth coil in the seventh preset detection cycle after the operating gear of the outdoor fan is reduced.

[0207] S25, determining whether the fifth coil temperature is greater than or equal to a seventh temperature threshold.

[0208] Wherein, when the fifth coil temperature is greater than or equal to the seventh temperature threshold, S21 is executed again; when the fifth coil temperature is greater than or equal to the seventh temperature threshold, S26 is executed.

[0209] It should be noted that the value range of the sixth temperature threshold may be 58-59° C. The sixth temperature threshold may be equal to or different from the fifth temperature threshold.

[0210] S26, using the reduced operating gear position of the outdoor fan as the target operating gear position of the outdoor fan.

[0211] The above technical solution can effectively reduce the coil temperature of the indoor heat exchanger in the air conditioner by adjusting the expansion valve opening and the operating gear of the outdoor fan after the air conditioner is restarted, and can effectively reduce the frequency of air conditioner shutdown due to overheating protection, thereby reducing the impact of repeated shutdowns on the life of the air conditioner, which is beneficial to further improve the system stability and reliability.

[0212] Figure 7 is based on Figure 5 The embodiment shown is a flow chart of another air conditioning control method, as shown in FIG. Figure 7 As shown, in Figure 5 After the air conditioner is controlled to continue to operate according to the target outdoor fan operating gear and the third expansion valve opening as described in step 405, the method further includes:

[0213] Step 406: When it is determined that the current coil temperature is greater than the eighth temperature threshold, a target indoor fan operating gear is determined according to a preset indoor fan operating gear adjustment strategy.

[0214] Among them, the implementation process of determining the target internal fan operating gear according to the preset internal fan operating gear adjustment strategy can refer to Figure 4 , this disclosure will not be repeated here.

[0215] Step 407, controlling the air conditioner to continue operating according to the lowest external fan operating gear, the third expansion valve opening, and the target internal fan operating gear.

[0216] The above technical solution can reduce the coil temperature by adjusting the operating gear of the internal fan when the coil temperature still cannot be reduced after adjusting the operating gear of the external fan and the opening of the expansion valve. This can effectively reduce the frequency of air conditioning shutdown due to overheating protection, and further improve the user experience of air conditioner users.

[0217] Figure 8 is a block diagram of an air conditioning control device shown in an exemplary embodiment of the present disclosure, such as Figure 8 As shown, the air conditioning control device may include:

[0218] The first acquisition module 701 is configured to acquire the coil temperature of the indoor heat exchanger during heating;

[0219] The first determination module 702 is configured to trigger an overheat protection shutdown when the coil temperature is greater than or equal to a first temperature threshold, and record the shutdown duration and the number of overheat protection shutdowns;

[0220] The second determination module 703 is configured to control the air conditioner to restart if it is determined that the current coil temperature is less than a second temperature threshold when the shutdown duration is less than a preset duration threshold, wherein the second temperature threshold is less than the first temperature threshold.

[0221] The above technical solution can control the restart of the air conditioner according to the shutdown duration and the number of overheat protection shutdowns after the overheat protection shutdown is triggered because the coil temperature of the indoor heat exchanger is greater than or equal to the first temperature threshold. Compared with the shutdown start-up procedure in the related art, it can effectively shorten the startup response time, thereby effectively avoiding the problem of poor user experience caused by long-term shutdown due to overheat protection.

[0222] Fig. 9 is based on Figure 8 The embodiment shown is a block diagram of an air conditioning control device, such as Fig. 9 As shown, the device may also include:

[0223] The recording module 704 is configured to record the number of overheat protection shutdowns after the overheat protection shutdown is triggered;

[0224] The control module 705 is configured to control the air conditioner to restart according to the shutdown duration and the number of overheat protection shutdowns.

[0225] Optionally, the control module 704 is configured to:

[0226] In the case where the shutdown duration is greater than or equal to the preset duration threshold, if it is determined that the number of overheat protection shutdowns is greater than the preset number threshold, obtaining historical operating parameters before triggering the overheat protection shutdown;

[0227] The air conditioner is controlled to restart according to the historical operating parameters.

[0228] Optionally, after the air conditioner is restarted, the device further includes:

[0229] The first regulating module 706 is configured to regulate the coil temperature by using a preset external fan operating gear adjustment strategy when determining that the current external fan operating gear is not the lowest external fan operating gear.

[0230] Optionally, the preset external fan operating gear adjustment strategy includes:

[0231] Determine whether the current operating gear of the external fan is the lowest operating gear of the external fan;

[0232] When it is determined that the operating gear of the external fan is the lowest operating gear of the external fan, taking the lowest operating gear of the external fan as the target operating gear of the external fan;

[0233] When it is determined that the external fan operating gear is not the lowest external fan operating gear, the external fan operating gear is adjusted down by one gear to obtain an updated external fan operating gear, and after obtaining the reduced external fan operating gear, the first target coil temperature within the preset detection period is obtained. When the first target coil temperature is greater than or equal to the third temperature threshold, if it is determined that the first target coil temperature is less than the fourth temperature threshold, the step of determining whether the current external fan operating gear is the lowest external fan operating gear is executed again, wherein the fourth temperature threshold is greater than the third temperature threshold, and the fourth temperature threshold is less than the first temperature threshold.

[0234] Optionally, the preset external fan operating gear adjustment strategy further includes:

[0235] In the case where the first target coil temperature is greater than or equal to the third temperature threshold, if it is determined that the first target coil temperature is greater than or equal to the fourth temperature threshold, the lowest outdoor fan operating gear is used as the target outdoor fan operating gear;

[0236] When the first target coil temperature is less than the third temperature threshold, the reduced operating gear of the outdoor fan is used as the target operating gear of the outdoor fan.

[0237] Optionally, the device further comprises:

[0238] The second regulating module 707 is configured to control the opening of the expansion valve to increase a preset opening value when it is determined that the current operating gear of the external fan is the lowest operating gear of the external fan.

[0239] Optionally, the method further comprises:

[0240] The third regulating module 708 is configured to regulate the coil temperature by a preset internal fan adjustment strategy when it is determined that the current external fan operating gear is the lowest external fan operating gear.

[0241] Optionally, the device further comprises:

[0242] The fourth regulating module 709 is configured to regulate the coil temperature by a preset internal fan adjustment strategy when it is determined that the current external fan operating gear is the lowest external fan operating gear and if it is determined that the opening of the expansion valve is greater than or equal to a preset opening value threshold.

[0243] Optionally, the preset internal fan operating gear adjustment strategy includes:

[0244] Determine whether the current internal fan operating gear is the maximum internal fan operating gear;

[0245] In the case where it is determined that the operating gear of the internal fan is the maximum operating gear of the internal fan, taking the maximum operating gear of the internal fan as the target operating gear of the internal fan;

[0246] When it is determined that the indoor fan operating gear is not the maximum indoor fan operating gear, the indoor fan operating gear is increased by one gear, and after obtaining the increased indoor fan operating gear, at the second target coil temperature within the preset detection cycle, when the second target coil temperature is greater than or equal to the fifth temperature threshold, the step of determining whether the current indoor fan operating gear is the maximum indoor fan operating gear is executed again.

[0247] Optionally, the preset internal fan operating gear adjustment strategy further includes:

[0248] When the second target coil temperature is less than the fifth temperature threshold, the increased operating gear of the indoor fan is used as the target operating gear of the indoor fan.

[0249] Optionally, the control module 704 is configured to:

[0250] In the case where the shutdown duration is greater than or equal to the preset duration threshold, if it is determined that the number of overheat protection shutdowns is less than or equal to the preset number threshold, obtaining preset initial operating parameters;

[0251] The air conditioner is controlled to restart according to the initial operating parameters.

[0252] The present disclosure also provides an air conditioning control device, comprising:

[0253] processor;

[0254] a memory for storing processor-executable instructions;

[0255] Wherein, the processor is configured to implement the above Figures 1 to 7 The steps of the method.

[0256] In another embodiment of the present disclosure, a computer-readable storage medium is provided, on which a computer program is stored. When the computer program is executed by a processor, the above Figures 1 to 6 The steps of the method.

[0257] In another embodiment of the present disclosure, a computer program product is provided, including a computer program, which implements the above when executed by a processor. Figures 1 to 6 The steps of the method are described.

[0258] Regarding the device in the above embodiment, the specific manner in which each module performs operations has been described in detail in the embodiment of the method, and will not be elaborated here.

[0259] The present disclosure also provides a computer-readable storage medium having computer program instructions stored thereon, and the program instructions, when executed by a processor, implement the steps of the air conditioning control method provided by the present disclosure.

[0260] Some embodiments of the present disclosure also provide a chip system, such as Fig. 9 As shown, the chip system includes at least one processor 901 and at least one interface circuit 902. The processor 901 and the interface circuit 902 can be interconnected via lines. For example, the interface circuit 902 can be used to receive signals from other devices (such as a memory of an electronic device). For another example, the interface circuit 902 can be used to send signals to other devices (such as the processor 901). Exemplarily, the interface circuit 902 can read instructions stored in the memory and send the instructions to the processor 901. When the instructions are executed by the processor 901, the air conditioning control device can execute the various steps in the above embodiments. Of course, the chip system may also include other discrete devices, and some embodiments of the present disclosure do not specifically limit this.

[0261] In some embodiments of the present disclosure, the interface circuit 902 can obtain data, program instructions and / or information from the internal storage area of ​​the chip system; it can also obtain data, program instructions and / or information from outside the chip system.

[0262] Optionally, the chip system also includes a memory 903, and the memory 903 is used to store necessary computer programs and data.

[0263] Those skilled in the art may also understand that the various illustrative logical blocks and steps listed in the embodiments of the present application may be implemented by electronic hardware, computer software, or a combination of the two. Whether such functions are implemented by hardware or software depends on the specific application and the design requirements of the entire system. Those skilled in the art may use various methods to implement the functions described for each specific application, but such implementation should not be understood as exceeding the scope of protection of the embodiments of the present application.

[0264] Those skilled in the art will readily appreciate other embodiments of the present disclosure after considering the specification and practicing the invention disclosed herein. This application is intended to cover any modification, use or adaptation of the present disclosure, which follows the general principles of the present disclosure and includes common knowledge or customary techniques in the art that are not disclosed in the present disclosure. The specification and examples are intended to be exemplary only, and the true scope and spirit of the present disclosure are indicated by the appended claims.

[0265] It should be understood that the present disclosure is not limited to the exact structures that have been described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims

1. An air conditioning control method, characterized in that: include: Get the coil temperature of the indoor heat exchanger during heating; When the coil temperature is greater than or equal to the first temperature threshold, overheat protection shutdown is triggered and shutdown duration is recorded; When the shutdown duration is less than a preset duration threshold, if it is determined that the current coil temperature is less than a second temperature threshold, the air conditioner is controlled to restart, wherein the second temperature threshold is less than the first temperature threshold.

2. The air conditioning control method according to claim 1, characterized in that: The method further comprises: After the overheat protection shutdown is triggered, the number of overheat protection shutdowns is recorded; The air conditioner is controlled to restart according to the shutdown duration and the number of overheat protection shutdowns.

3. The air conditioning control method according to claim 2, characterized in that: The controlling the restart of the air conditioner according to the shutdown duration and the number of shutdowns for overheat protection comprises: In the case where the shutdown duration is greater than or equal to the preset duration threshold, if it is determined that the number of overheat protection shutdowns is greater than the preset number threshold, obtaining historical operating parameters before triggering the overheat protection shutdown; The air conditioner is controlled to restart according to the historical operating parameters.

4. The air conditioning control method according to claim 3, characterized in that: After the air conditioner is restarted, the method further includes: When it is determined that the current operating gear of the external fan is not the lowest operating gear of the external fan, the coil temperature is adjusted by a preset external fan operating gear adjustment strategy.

5. The air conditioning control method according to claim 4, characterized in that: The preset external fan operating gear adjustment strategy includes: Determine whether the current operating gear of the external fan is the lowest operating gear of the external fan; When it is determined that the operating gear of the external fan is the lowest operating gear of the external fan, taking the lowest operating gear of the external fan as the target operating gear of the external fan; When it is determined that the external fan operating gear is not the lowest external fan operating gear, the external fan operating gear is adjusted down by one gear to obtain an updated external fan operating gear, and after obtaining the reduced external fan operating gear, the first target coil temperature within the preset detection period is obtained. When the first target coil temperature is greater than or equal to the third temperature threshold, if it is determined that the first target coil temperature is less than the fourth temperature threshold, the step of determining whether the current external fan operating gear is the lowest external fan operating gear is executed again, wherein the fourth temperature threshold is greater than the third temperature threshold, and the fourth temperature threshold is less than the first temperature threshold.

6. The air conditioning control method according to claim 5, characterized in that: The preset external fan operating gear adjustment strategy also includes: In the case where the first target coil temperature is greater than or equal to the third temperature threshold, if it is determined that the first target coil temperature is greater than or equal to the fourth temperature threshold, the lowest outdoor fan operating gear is used as the target outdoor fan operating gear; When the first target coil temperature is less than the third temperature threshold, the reduced operating gear of the outdoor fan is used as the target operating gear of the outdoor fan.

7. The air conditioning control method according to claim 3, characterized in that: The method further comprises: When it is determined that the current operating gear of the external fan is the lowest operating gear of the external fan, the opening of the expansion valve is controlled to increase by a preset opening value.

8. The air conditioning control method according to claim 3, characterized in that: The method further comprises: When it is determined that the current operating gear of the external fan is the lowest operating gear of the external fan, the coil temperature is adjusted by a preset internal fan adjustment strategy.

9. The air conditioning control method according to claim 3, characterized in that: The method further comprises: When it is determined that the current external fan operating gear is the lowest external fan operating gear, if it is determined that the opening of the expansion valve is greater than or equal to a preset opening value threshold, the coil temperature is adjusted using a preset internal fan adjustment strategy.

10. The air conditioning control method according to claim 8 or 9, characterized in that: The preset internal fan operating gear adjustment strategy includes: Determine whether the current internal fan operating gear is the maximum internal fan operating gear; In the case where it is determined that the operating gear of the internal fan is the maximum operating gear of the internal fan, taking the maximum operating gear of the internal fan as the target operating gear of the internal fan; When it is determined that the indoor fan operating gear is not the maximum indoor fan operating gear, the indoor fan operating gear is increased by one gear, and after obtaining the increased indoor fan operating gear, at the second target coil temperature within the preset detection cycle, when the second target coil temperature is greater than or equal to the fifth temperature threshold, the step of determining whether the current indoor fan operating gear is the maximum indoor fan operating gear is executed again.

11. The air conditioning control method according to claim 10, characterized in that: The preset internal fan operating gear adjustment strategy also includes: When the second target coil temperature is less than the fifth temperature threshold, the increased operating gear of the indoor fan is used as the target operating gear of the indoor fan.

12. The air conditioning control method according to claim 2, characterized in that: The controlling the restart of the air conditioner according to the shutdown duration and the number of shutdowns for overheat protection comprises: In the case where the shutdown duration is greater than or equal to the preset duration threshold, if it is determined that the number of overheat protection shutdowns is less than or equal to the preset number threshold, obtaining preset initial operating parameters; The air conditioner is controlled to restart according to the initial operating parameters.

13. An air conditioning control device, characterized in that: include: A first acquisition module is configured to acquire the coil temperature of the indoor heat exchanger during heating; A first determination module is configured to trigger an overheat protection shutdown when the coil temperature is greater than or equal to a first temperature threshold, and record the shutdown duration; The second determination module is configured to control the air conditioner to restart if it is determined that the current coil temperature is less than a second temperature threshold when the shutdown time is less than a preset time threshold, wherein the second temperature threshold is less than the first temperature threshold.

14. An air conditioning control device, characterized in that: include: processor; a memory for storing processor-executable instructions; The processor is configured to implement the steps of the method according to any one of claims 1 to 12.

15. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of the method according to any one of claims 1 to 12 are implemented.

16. A computer program product, characterized in that The invention comprises a computer program, which implements the steps of the method according to any one of claims 1 to 12 when being executed by a processor.

17. A chip system, characterized in that: The chip system includes a processing unit and an interface circuit, the processing unit obtains program instructions through the interface circuit, the program instructions are executed by the processing unit, and the processing unit is used to execute the steps of the method as claimed in any one of claims 1 to 12.

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