Air conditioner control method and device, air conditioner equipment, storage medium and program product

Abstract

The invention relates to an air conditioner control method and device, air conditioner equipment, a computer readable storage medium and a computer program product. After the air conditioner equipment starts a heating mode to operate, whether an outdoor unit of the air conditioner equipment is in an abnormal temperature environment or not is determined; under the condition that it is determined that the outdoor unit is in the abnormal temperature environment, heating overload protection of the air conditioner equipment is achieved based on the compressor operation parameters of the air conditioner equipment; and under the condition that it is determined that the outdoor unit is not in the abnormal temperature environment, heating overload protection of the air conditioning equipment is achieved based on the temperature related parameters of the outdoor unit. Heating overload protection is achieved based on various parameters of the outdoor unit, it can be effectively guaranteed that heating overload protection is effectively and accurately triggered, and then safe and stable operation of the whole air conditioner is guaranteed.

Description

Technical Field

[0001] The present application relates to the field of air conditioning technology, and in particular to an air conditioning control method, device, air conditioning equipment, computer-readable storage medium and computer program product. Background Art

[0002] With the improvement of economic level, air conditioning equipment has gradually become an essential household appliance in people's lives. When existing air conditioning equipment is running in heating mode, the increase in the unit operation frequency may cause the exhaust pressure and exhaust temperature of the compressor to continue to increase, and the overheating of the compressor will cause the reliability of the air conditioner to decrease. At this time, the air conditioner needs to be load-reduced.

[0003] In traditional technology, heating overload protection is basically achieved by detecting the pipe temperature of the indoor unit during the heating process. For example, when it is detected that the pipe temperature of the indoor unit is greater than a certain threshold temperature, the outdoor unit is controlled to be in a frequency reduction state or a shutdown state to achieve heating overload protection. When the pipe temperature of the indoor unit returns to a safe temperature, the heating overload protection is exited and the air conditioner resumes normal operation.

[0004] However, in the above-mentioned method of realizing heating overload protection for the outdoor unit through the indoor unit temperature parameters, the change of the indoor unit temperature parameters reacts slower than that of the outdoor unit. It may happen that the compressor exhaust pressure and temperature are already too high, and the heating overload protection has not been triggered, which leads to abnormal operation of the compressor and air conditioner. Summary of the invention

[0005] Based on this, it is necessary to provide an air conditioning control method, device, air conditioning equipment, computer-readable storage medium and computer program product to address the technical problem that the above-mentioned existing heating overload protection method may cause abnormal operation of the compressor and air conditioner.

[0006] In a first aspect, the present application provides an air conditioning control method, the method comprising:

[0007] After the air conditioning device starts to operate in a heating mode, determining whether the outdoor unit of the air conditioning device is in an abnormal temperature environment;

[0008] When it is determined that the outdoor unit is in an abnormal temperature environment, heating overload protection is implemented for the air-conditioning equipment based on the compressor operating parameters of the air-conditioning equipment;

[0009] When it is determined that the outdoor unit is not in an abnormal temperature environment, heating overload protection of the air-conditioning equipment is implemented based on temperature-related parameters of the outdoor unit.

[0010] In one embodiment, determining whether the outdoor unit of the air conditioning equipment is in an abnormal temperature environment includes:

[0011] Collecting thermal imaging image data of the outdoor unit;

[0012] Performing image analysis based on the thermal imaging image data to obtain a temperature analysis result;

[0013] Determine whether the outdoor unit is in an abnormal temperature environment according to the temperature analysis result.

[0014] In one embodiment, determining whether the outdoor unit of the air conditioning equipment is in an abnormal temperature environment includes:

[0015] Collecting infrared temperature measurement data of the outdoor unit;

[0016] Performing data analysis based on the infrared temperature measurement data to obtain a temperature analysis result;

[0017] Determine whether the outdoor unit is in an abnormal temperature environment according to the temperature analysis result.

[0018] In one embodiment, determining whether the outdoor unit of the air-conditioning equipment is in an abnormal temperature environment according to the temperature analysis result includes:

[0019] When the temperature analysis result indicates that a heat source or a cold source exists, determining that the outdoor unit is in an abnormal temperature environment;

[0020] When the temperature analysis result is a normal temperature environment, it is determined that the outdoor unit is not in an abnormal temperature environment.

[0021] In one of the embodiments, the compressor operating parameters include compressor phase current;

[0022] The method of implementing heating overload protection for the air-conditioning equipment based on the compressor operating parameters of the air-conditioning equipment includes:

[0023] Determining a current load state of the air conditioning device according to a phase current interval to which the compressor phase current belongs;

[0024] According to the current load state and the preset corresponding relationship between the load state and the compressor control mode, a target compressor control mode is correspondingly obtained to control the operation of the compressor.

[0025] In one embodiment, determining the current load state of the air-conditioning device according to the phase current interval to which the compressor phase current belongs includes:

[0026] When the compressor phase current is less than or equal to the first phase current threshold, determining that the current load state of the air-conditioning equipment is a light load state;

[0027] When the compressor phase current is greater than a first phase current threshold and less than a second phase current threshold, determining that the current load state of the air-conditioning device is a heavy load state;

[0028] When the compressor phase current is greater than or equal to the second phase current threshold, determining that the current load state of the air-conditioning equipment is an overload state;

[0029] The first phase current threshold is smaller than the second phase current threshold.

[0030] In one of the embodiments, the temperature-related parameters of the outdoor unit include gas pipe temperature and liquid pipe temperature;

[0031] The method of implementing heating overload protection for the air-conditioning device based on the temperature-related parameters of the outdoor unit includes:

[0032] Determining a gas-liquid temperature difference between the gas pipe temperature and the liquid pipe temperature;

[0033] Determining the current load state of the air conditioning device according to the temperature interval to which the gas pipe temperature belongs and the temperature interval to which the gas-liquid temperature difference belongs;

[0034] According to the current load state and the preset corresponding relationship between the load state and the compressor control mode, a target compressor control mode is correspondingly obtained to control the operation of the compressor.

[0035] In one embodiment, determining the current load state of the air conditioning device according to the temperature interval to which the gas pipe temperature belongs and the temperature interval to which the gas-liquid temperature difference belongs includes:

[0036] When the air pipe temperature is less than or equal to a first temperature threshold, determining that the current load state of the air conditioning equipment is a light load state;

[0037] When the air pipe temperature is greater than a first temperature threshold and less than a second temperature threshold, determining that the current load state of the air conditioning equipment is a heavy load state;

[0038] When the gas pipe temperature is greater than or equal to the second temperature threshold, and the gas-liquid temperature difference is greater than or equal to the first temperature difference threshold, determining that the current load state of the air conditioning equipment is a heavy load state;

[0039] When the gas pipe temperature is greater than or equal to the second temperature threshold and the gas-liquid temperature difference is less than the first temperature difference threshold, determining that the current load state of the air conditioning equipment is an overload state;

[0040] The first temperature threshold is lower than the second temperature threshold.

[0041] In one embodiment, obtaining a target compressor control mode according to the current load state and a preset correspondence between the load state and the compressor control mode to control the operation of the compressor includes:

[0042] When the current load state is a light load state, the corresponding target compressor control mode is to keep the current operating state unchanged;

[0043] When the current load state is a heavy load state, the corresponding target compressor control mode is to control the compressor frequency to decrease;

[0044] When the current load state is an overload state, the corresponding target compressor control mode is to control the compressor to stop running.

[0045] In a second aspect, the present application provides an air conditioning control device, the device comprising:

[0046] A temperature environment determination module, used to determine whether the outdoor unit of the air-conditioning device is in an abnormal temperature environment after the air-conditioning device starts to operate in a heating mode;

[0047] an abnormal protection module, for implementing heating overload protection for the air-conditioning equipment based on the compressor operating parameters of the air-conditioning equipment when it is determined that the outdoor unit is in an abnormal temperature environment;

[0048] The normal protection module is used to implement heating overload protection for the air-conditioning equipment based on the temperature-related parameters of the outdoor unit when it is determined that the outdoor unit is not in an abnormal temperature environment.

[0049] On the third aspect, the present application also provides an air-conditioning device, including a controller, a temperature environment acquisition device and a temperature sensor, wherein the temperature environment acquisition device is used to determine the temperature environment of the outdoor unit of the air-conditioning device, the temperature sensor is used to detect temperature-related parameters of the outdoor unit, and the controller is used to implement heating overload protection for the air-conditioning equipment based on the above-mentioned air-conditioning control method.

[0050] In a fourth aspect, the present application further provides a computer-readable storage medium having a computer program stored thereon, wherein the computer program implements the steps of the above method when executed by a processor.

[0051] In a fifth aspect, the present application also provides a computer program product, including a computer program, which implements the steps of the above method when executed by a processor.

[0052] The above-mentioned air conditioning control method, device, air conditioning equipment, computer-readable storage medium and computer program product, after the air conditioning equipment starts the heating mode, determines whether the outdoor unit of the air conditioning equipment is in an abnormal temperature environment; when it is determined that the outdoor unit is in an abnormal temperature environment, the heating overload protection of the air conditioning equipment is implemented based on the compressor operation parameters of the air conditioning equipment; when it is determined that the outdoor unit is not in an abnormal temperature environment, the heating overload protection of the air conditioning equipment is implemented based on the temperature-related parameters of the outdoor unit. By implementing the heating overload protection based on various parameters of the outdoor unit, it can effectively ensure that the heating overload protection is effectively and accurately triggered, thereby ensuring the safe and stable operation of the air conditioning unit. BRIEF DESCRIPTION OF THE DRAWINGS

[0053] In order to more clearly illustrate the technical solutions in the embodiments of the present application or related technologies, the drawings required for use in the embodiments of the present application or related technical descriptions will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0054] Figure 1 An application environment diagram of an air conditioning control method in an embodiment;

[0055] Figure 2 A schematic diagram of a flow chart of an air conditioning control method in one embodiment;

[0056] Figure 3 A schematic diagram of a system block diagram of an air conditioning device in one embodiment;

[0057] Figure 4 A flowchart of a step of determining whether an outdoor unit is in an abnormal temperature environment in one embodiment;

[0058] Figure 5 A schematic flow chart of a step of determining whether an outdoor unit is in an abnormal temperature environment in another embodiment;

[0059] Figure 6 A flowchart of a step of determining whether an outdoor unit is in an abnormal temperature environment in another embodiment;

[0060] Figure 7 A schematic diagram of a flow chart of steps for controlling the operation of a compressor in one embodiment;

[0061] Figure 8 A schematic flow chart of steps for controlling the operation of a compressor in another embodiment;

[0062] Fig. 9 It is a flowchart of steps for controlling the operation of a compressor in another embodiment;

[0063] Fig.10 A schematic diagram of a flow chart of steps for controlling the operation of a compressor in yet another embodiment;

[0064] Fig.11 A schematic diagram of a flow chart of steps for controlling the operation of a compressor in another embodiment;

[0065] Fig.12 A schematic flow chart of an air conditioning control method in another embodiment;

[0066] Fig.13 A structural block diagram of an air conditioning control method device in an embodiment;

[0067] Fig.14 FIG. 4 is a diagram showing the internal structure of a computer device in one embodiment. DETAILED DESCRIPTION

[0068] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0069] The air conditioning control method provided in the embodiment of the present application can be applied to Figure 1 In the application environment shown. The air-conditioning device may include a controller 110, a temperature environment acquisition device 120 and a temperature sensor 130. The temperature environment acquisition device 120 is used to determine the temperature environment of the outdoor unit of the air-conditioning device. The temperature sensor 130 is used to detect the temperature-related parameters of the outdoor unit. The controller 110 is used to implement heating overload protection for the air-conditioning device based on the air-conditioning control method provided in the embodiment of the present application.

[0070] Specifically, after the air-conditioning equipment starts the heating mode, the controller 110 can determine whether the outdoor unit of the air-conditioning equipment is in an abnormal temperature environment through the temperature environment acquisition device 120, and when it is determined that the outdoor unit is in an abnormal temperature environment, the heating overload protection of the air-conditioning equipment is implemented based on the compressor operating parameters of the air-conditioning equipment. When it is determined that the outdoor unit is not in an abnormal temperature environment, the heating overload protection of the air-conditioning equipment is implemented based on the temperature-related parameters of the outdoor unit detected by the temperature sensor 130.

[0071] It is understandable that the controller is the control center of the air-conditioning equipment, which may be a control chip or control circuit board set in the main body of the air-conditioning equipment, or an external control system based on wireless communication. The external control system can be implemented by devices such as terminals or servers. The terminals can be, but are not limited to, various personal computers, smart phones, tablet computers, Internet of Things devices and portable wearable devices. Internet of Things devices can be smart speakers, smart car devices, etc. Portable wearable devices can be smart watches, smart bracelets, etc. The server can be implemented by an independent server or a server cluster consisting of multiple servers.

[0072] In an exemplary embodiment, Figure 2 As shown, a method for controlling an air conditioning device is provided, and the method is applied to Figure 1 The controller 110 in FIG. 1 is taken as an example to illustrate the method, which includes the following steps 202 to 206. Among them:

[0073] Step 202: After the air conditioning device starts to operate in heating mode, it is determined whether the outdoor unit of the air conditioning device is in an abnormal temperature environment.

[0074] Among them, the air conditioning equipment can switch between cooling mode and heating mode through a four-way valve, and the heating mode is a functional mode for generating and outputting warm air. Figure 3 In the heating mode, the low-temperature and low-pressure gaseous refrigerant is sucked into the compressor and becomes a high-temperature and high-pressure gas after being pressurized. The high-temperature and high-pressure gas then enters the heat exchanger of the indoor unit (used as a condenser at this time) through the four-way valve. Here, the refrigerant releases heat through the condensation and liquefaction process, and this heat is transferred to the indoor air, thereby increasing the temperature of the indoor air. The liquid refrigerant after condensation and liquefaction is decompressed through a throttling device (such as a capillary tube) to reduce its pressure and temperature in preparation for the next evaporation process. The decompressed liquid refrigerant enters the heat exchanger of the outdoor unit (used as an evaporator at this time). In the evaporator, the refrigerant absorbs the heat of the outdoor air through the evaporation and gasification process, thereby becoming a low-temperature and low-pressure gaseous refrigerant, which is sucked into the compressor again to start the next cycle. This process is repeated, and through the continuous liquefaction and gasification cycle, heat is transferred from the outdoor to the indoor, achieving the purpose of heating.

[0075] Specifically, after the air conditioner receives the start-up command sent by the user through the control terminal, it starts to operate in the heating mode. In the heating mode, the high operating frequency of the unit will cause the exhaust pressure and exhaust temperature of the compressor to be too high. At this time, load reduction processing is required to ensure the reliable operation of the air conditioner. This process is called heating overload protection.

[0076] As can be seen from the above, in the heating mode, the high-temperature and high-pressure gas coming out of the compressor exhaust port passes through the four-way valve to reach the heat exchanger of the indoor unit. It can be considered to monitor whether the compressor needs to be protected from heating overload by detecting the pipe temperature of the indoor unit. However, since the circulation pipeline reaching the indoor unit is relatively long, the change of the pipe temperature of the indoor unit reacts slower than that of the outdoor unit. It may happen that the exhaust pressure and temperature of the compressor are already too high, and the heating overload protection has not been triggered, which leads to abnormal operation of the compressor and air conditioner. Based on the above protection mechanism, the embodiment of the present application considers that heating overload protection can be achieved through the temperature-related parameters of the outdoor unit.

[0077] It is understandable that compared with the indoor unit, the installation environment of the outdoor unit is complex and changeable. The temperature-related parameters of the outdoor unit may be affected by the heat source or cold source, resulting in the detected temperature not being able to reflect the actual load situation, which in turn causes the heating overload protection to be falsely triggered or missed. Therefore, it is necessary to first determine whether the outdoor unit is in an abnormal temperature environment to determine whether the temperature parameters of the outdoor unit can be used to achieve heating overload protection for the air-conditioning equipment.

[0078] Furthermore, to determine whether the outdoor unit is in an abnormal temperature environment, the temperature environment in which the outdoor unit is located may be detected first, and then it is determined whether the temperature environment is an abnormal temperature environment.

[0079] Among them, the temperature environment of the outdoor unit can be detected by setting a temperature acquisition device on the outdoor unit, or by performing non-contact temperature acquisition on the outdoor unit to realize temperature detection. The non-contact temperature acquisition can be an infrared temperature measurement method or a laser temperature measurement method, etc., or thermal imaging technology can be used to obtain thermal imaging image data, and then image analysis is performed to obtain the temperature environment of the outdoor unit.

[0080] In addition, whether the temperature environment is an abnormal temperature environment can be determined by directly comparing the detected temperature with a preset temperature threshold, or by analyzing the change trend of the detected temperature within a preset time period.

[0081] Step 204 , when it is determined that the outdoor unit is in an abnormal temperature environment, heating overload protection of the air-conditioning equipment is implemented based on the compressor operating parameters of the air-conditioning equipment.

[0082] Specifically, it is determined that the outdoor unit is in an abnormal temperature environment, that is, the temperature-related parameters of the current outdoor unit may be affected by the heat source or the cold source, resulting in the detected temperature being unable to reflect the actual load situation. Other methods need to be sought to achieve heating overload protection for the air-conditioning equipment to ensure the reliable operation of the air-conditioning equipment.

[0083] For example, when it is determined that the outdoor unit is in an abnormal temperature environment, the process may switch back to detecting the pipe temperature of the indoor unit to monitor whether heating overload protection is required for the compressor.

[0084] Furthermore, in order to ensure accurate triggering of heating overload protection, the present application can implement heating overload protection for the air-conditioning equipment based on the compressor operating parameters of the air-conditioning equipment when it is determined that the outdoor unit is in an abnormal temperature environment. Specifically, the compressor operating parameters can be obtained first, and then the real-time load state of the compressor at that moment can be obtained based on the real-time compressor operating parameters. Then, the corresponding control method is determined based on the real-time load state to control the operation of the compressor and implement heating overload protection for the air-conditioning equipment.

[0085] Among them, the compressor is a key component to ensure the normal operation of the air-conditioning equipment. Its operating parameters not only represent the operating status of the compressor itself, but also represent the operating status of the entire air-conditioning equipment. It can be understood that during the operation of the air-conditioning equipment, its controller will obtain the compressor operating parameters in real time as key parameters for controlling the normal operation of the air-conditioning equipment, and can also promptly know whether the air-conditioning equipment has any operating failure.

[0086] For example, the compressor operating parameters may be phase current flowing through the compressor, electrical angle of the compressor, flux linkage, moment of inertia, mechanical speed, operating frequency, etc. Among them, phase current is the current flowing through each phase load in the three-phase power supply, electrical angle is the phase relationship between current and voltage, flux linkage is the magnetic flux linked by the conductive coil or current loop, and moment of inertia, mechanical speed and operating frequency are related indicators to measure the rotation performance of the compressor.

[0087] Step 206 : When it is determined that the outdoor unit is not in an abnormal temperature environment, heating overload protection is implemented for the air-conditioning equipment based on the temperature-related parameters of the outdoor unit.

[0088] Specifically, it is determined that the outdoor unit is not in an abnormal temperature environment, that is, the temperature-related parameters of the current outdoor unit will not be affected by the heat source or the cold source, and the detected temperature can reflect the actual load situation. Then, the heating overload protection of the air-conditioning equipment can be directly implemented based on the temperature-related parameters of the outdoor unit to ensure the reliable operation of the air-conditioning equipment.

[0089] Furthermore, the temperature-related parameters of the outdoor unit may be obtained first, specifically, the temperature data on the pipe near the exhaust port of the compressor. Then, the exhaust pressure and exhaust temperature of the compressor at that moment may be obtained according to the temperature-related parameters of the outdoor unit obtained in real time, so as to characterize the real-time load state of the compressor, and then the corresponding control mode may be determined based on the real-time load state to control the operation of the compressor and realize the heating overload protection of the air-conditioning equipment.

[0090] The above-mentioned air conditioning control method, device, air conditioning equipment, computer-readable storage medium and computer program product, after the air conditioning equipment starts the heating mode, determines whether the outdoor unit of the air conditioning equipment is in an abnormal temperature environment; when it is determined that the outdoor unit is in an abnormal temperature environment, the heating overload protection of the air conditioning equipment is implemented based on the compressor operation parameters of the air conditioning equipment; when it is determined that the outdoor unit is not in an abnormal temperature environment, the heating overload protection of the air conditioning equipment is implemented based on the temperature-related parameters of the outdoor unit. By implementing the heating overload protection based on various parameters of the outdoor unit, it can effectively ensure that the heating overload protection is effectively and accurately triggered, thereby ensuring the safe and stable operation of the air conditioning unit.

[0091] In an exemplary embodiment, Figure 4 As shown, step 202 includes steps 302 to 306, wherein:

[0092] Step 302: Collect thermal imaging image data of the outdoor unit.

[0093] Specifically, the thermal imaging image data can characterize the temperature distribution of the environment in which the outdoor unit is located. Thermal imaging image data is a grayscale or pseudo-color image, where different colors or grayscale levels represent different temperatures of the object being measured. Thermal imaging image data can intuitively display the temperature distribution on the surface of the outdoor unit, thereby assisting in determining whether the outdoor unit is in an abnormal temperature environment.

[0094] Furthermore, the thermal imaging image data can be collected by receiving the infrared radiation energy distribution pattern of the measured target through a thermal imaging infrared detector and an optical imaging objective lens, and reflecting it on the photosensitive elements of the infrared detector. These photosensitive elements convert the received infrared radiation energy into electrical signals, which are then amplified and processed by a signal processing circuit, and finally generate thermal imaging image data corresponding to the surface temperature distribution of the measured target.

[0095] It is understandable that in this embodiment, thermal imaging data can be directly acquired by directly performing thermal imaging on the outdoor unit as a whole. Of course, in order to more accurately determine whether the temperature-related parameters of the current outdoor unit are affected by the heat source or the cold source, thermal imaging data can also be acquired by performing thermal imaging on the pipe position near the compressor exhaust port in the outdoor unit.

[0096] Step 304: Perform image analysis based on the thermal imaging image data to obtain a temperature analysis result.

[0097] Specifically, the temperature analysis result can indicate whether the outdoor unit is in an abnormal temperature environment, that is, the temperature analysis result can indicate that there are other temperature sources that affect the authenticity of the temperature data. The other temperature sources can be heat sources that cause the detected temperature to increase abnormally, or cold sources that cause the detected temperature to decrease abnormally. In addition, the temperature analysis result can also indicate that the outdoor unit is in a normal temperature environment, which will not affect the authenticity of the temperature data.

[0098] Furthermore, any object with a temperature higher than absolute zero (-273.15°C) will emit infrared radiation. This is the result of the thermal motion of the molecules inside the object. The higher the temperature of the object, the more violent the molecular thermal motion, the stronger the infrared radiation energy emitted, and the larger the color area representing high temperature on the thermal imaging image data. On the contrary, the lower the temperature of the object, the calmer the molecular thermal motion, the weaker the infrared radiation energy emitted, and the larger the color area representing low temperature on the thermal imaging image data. After obtaining the thermal imaging image data, image analysis can be performed to obtain the temperature analysis result.

[0099] Furthermore, the method for obtaining the temperature analysis result may be to perform image analysis to obtain the color area representing high temperature and low temperature on the image, and then compare the color area representing high temperature with a preset high temperature color area threshold, and compare the color area representing low temperature with a preset low temperature color area threshold to obtain the temperature analysis result. The method for obtaining the temperature analysis result may also be to directly compare and analyze the obtained thermal imaging image data with the thermal imaging image data corresponding to the normal temperature environment. Of course, image analysis of thermal imaging image data may also be achieved by using various deep learning image recognition algorithms.

[0100] Step 306: Determine whether the outdoor unit is in an abnormal temperature environment based on the temperature analysis result.

[0101] Specifically, when the temperature analysis result is characterized by the existence of other temperature sources that affect the authenticity of the temperature data, it can be determined that the outdoor unit is in an abnormal temperature environment; and when the temperature analysis result is characterized by the absence of other temperature sources that affect the authenticity of the temperature data, it can be determined that the outdoor unit is not in an abnormal temperature environment.

[0102] In an exemplary embodiment, Figure 5 As shown, step 306 includes steps 402 to 404, wherein:

[0103] Step 402: When the temperature analysis result indicates that a heat source or a cold source exists, it is determined that the outdoor unit is in an abnormal temperature environment.

[0104] The heat source is a temperature source that may cause the detected temperature-related parameters of the outdoor unit to increase abnormally, and the cold source is a temperature source that may cause the detected temperature-related parameters of the outdoor unit to decrease abnormally. Both temperature sources may cause the detected temperature to fail to reflect the actual load of the compressor, thereby causing the heating overload protection to be falsely triggered or missed. Furthermore, when the temperature analysis result shows that there is a heat source or a cold source, it is determined that the outdoor unit is in an abnormal temperature environment.

[0105] Step 404: When the temperature analysis result is a normal temperature environment, determine that the outdoor unit is not in an abnormal temperature environment.

[0106] Specifically, the temperature analysis result is a normal temperature environment, that is, there is no heat source or cold source, and the temperature-related parameters of the outdoor unit detected can reflect the actual load of the compressor and ensure that the heating overload protection is accurately triggered. Furthermore, when the temperature analysis result is a normal temperature environment, it is determined that the outdoor unit is not in an abnormal temperature environment.

[0107] In an exemplary embodiment, Figure 6 As shown, step 202 also includes steps 303 to 306, wherein:

[0108] Step 303, collecting infrared temperature measurement data of the outdoor unit.

[0109] In this embodiment, in order to reduce the cost of heating overload protection, it can be replaced by collecting infrared temperature measurement data of the outdoor unit to obtain temperature analysis results to determine whether the outdoor unit is in an abnormal temperature environment.

[0110] Specifically, as described above, any object, as long as its temperature is higher than absolute zero (-273.15°C), will emit infrared radiation energy to the surrounding space. The infrared radiation energy and wavelength distribution of an object are closely related to its surface temperature. Therefore, by measuring the infrared temperature measurement data of the outdoor unit, that is, the infrared energy radiated by itself, its surface temperature distribution can be accurately determined.

[0111] Furthermore, an infrared thermometer can be installed on the surface of the outdoor unit or in the pipe near the exhaust port of the compressor to collect infrared temperature measurement data of the outdoor unit. The infrared thermometer is usually composed of an optical system, a photodetector, a signal amplifier, signal processing, display output and other parts. The optical system gathers the infrared radiation energy of the target within its field of view, and the infrared energy is focused on the photodetector and converted into a corresponding electrical signal. The signal passes through the amplifier and signal processing circuit, and is converted into the temperature value of the measured target after correction according to the algorithm in the instrument and the target emissivity.

[0112] Step 305: Perform data analysis based on the infrared temperature measurement data to obtain temperature analysis results.

[0113] Specifically, after obtaining the infrared temperature measurement data, it can be compared with the normal temperature corresponding to the current environment to obtain the temperature analysis result. The normal temperature corresponding to the current environment can be obtained based on any authoritative meteorological data source and agency published data, for example, it can be obtained from the temperature data published by the National Meteorological Center (NMC).

[0114] Furthermore, when the infrared temperature measurement data obtained is inconsistent with the normal temperature corresponding to the current environment, or the difference exceeds the allowable error range, it indicates that the infrared temperature measurement data obtained is different from the temperature distribution of the current normal temperature environment, and further indicates that there are other temperature sources that affect the authenticity of the temperature data. When the infrared temperature measurement data obtained is consistent with the normal temperature corresponding to the current environment, or the difference is within the allowable error range, it indicates that the infrared temperature measurement data obtained is consistent with the temperature distribution of the current normal temperature environment, and it can be determined that the outdoor unit is not in an abnormal temperature environment.

[0115] Step 306: Determine whether the outdoor unit is in an abnormal temperature environment according to the temperature analysis result. Please refer to the description of step 306 above and will not repeat it here.

[0116] In an exemplary embodiment, Figure 7 As shown, step 204 includes steps 502 to 504, wherein:

[0117] Step 502: Determine the current load state of the air-conditioning equipment according to the phase current interval to which the compressor phase current belongs.

[0118] It is understandable that if the exhaust temperature and exhaust pressure of the compressor are too high, causing the load of the compressor to increase sharply, the temperature of the refrigerant will increase rapidly, and accordingly, the phase current of the compressor will also increase rapidly. Furthermore, the present application uses the phase current of the compressor as the compressor operating parameter of the air-conditioning equipment to achieve heating overload protection for the air-conditioning equipment.

[0119] Specifically, the current load state of the air-conditioning equipment can be determined by dividing the compressor phase current into multiple phase current intervals, and then obtaining the current load state based on the correspondence between the phase current intervals and the compressor load state, or the compressor load state calculation formula corresponding to the phase current intervals.

[0120] It can be understood that when the compressor phase current is divided into multiple phase current intervals, the division method and the number of intervals are not fixed. Each phase current interval can be divided according to a fixed phase current amplitude, or it can be divided according to a progressive phase current amplitude, or it can be an irregular phase current interval obtained by dividing according to any phase current amplitude. It can be selected and set according to the actual parameters of the specific air-conditioning equipment without limitation.

[0121] The following explanation is given by taking the example of obtaining three phase current intervals by dividing the first phase current threshold and the second phase current threshold, where the first phase current threshold is less than the second phase current threshold. Among them, the specific numerical values ​​of the first phase current threshold and the second phase current threshold are not limited and can be determined according to actual technical requirements. For example, in an embodiment of the present application, the value range of the first phase current threshold may be 1~2A, and the value range of the second phase current threshold may be 4~5A. Taking the first phase current threshold as 1A and the second phase current threshold as 4A as an example, it can be divided into a first phase current interval less than or equal to 1A, a second phase current interval as (1A, 4A), and a third phase current interval greater than or equal to 4A.

[0122] In an exemplary embodiment, Figure 8 As shown, step 502 includes steps 602 to 606, wherein:

[0123] Step 602, when the compressor phase current is less than or equal to the first phase current threshold, determine that the current load state of the air-conditioning device is a light load state. Specifically, when the compressor phase current is less than or equal to the first phase current threshold, that is, when the compressor phase current is in the first phase current interval, according to the corresponding relationship between the phase current interval and the compressor load state, it can be determined that the current load state of the air-conditioning device is a light load state, that is, the overall load of the compressor is not heavy.

[0124] Step 604, when the compressor phase current is greater than the first phase current threshold value and less than the second phase current threshold value, determine that the current load state of the air-conditioning device is a heavy load state. Specifically, when the compressor phase current is greater than the first phase current threshold value and less than the second phase current threshold value, that is, when the compressor phase current is in the second phase current interval, according to the corresponding relationship between the phase current interval and the compressor load state, it can be determined that the current load state of the air-conditioning device is a heavy load state, that is, the overall load of the compressor is in a heavier state.

[0125] Step 606, when the compressor phase current is greater than or equal to the second phase current threshold, determine that the current load state of the air-conditioning device is an overload state. Specifically, when the compressor phase current is greater than or equal to the second phase current threshold, that is, when the compressor phase current is in the third phase current interval, according to the corresponding relationship between the phase current interval and the compressor load state, it can be determined that the current load state of the air-conditioning device is an overload state, that is, the overall load of the compressor is in a critical state.

[0126] Step 504, according to the current load state and the preset correspondence between the load state and the compressor control mode, a target compressor control mode is obtained to control the operation of the compressor.

[0127] It is understandable that the control mode of the compressor can be determined in advance based on ensuring the safe operation of the air-conditioning equipment according to different load conditions. Among them, the control modes that the compressor can generally be in include maintaining the current state operation, increasing the operating frequency of the compressor, reducing the operating frequency of the compressor, and controlling the compressor to stop operating.

[0128] Specifically, after determining the current load state of the compressor, the target compressor control mode can be matched according to the current load state and the preset correspondence between the load state and the compressor control mode, and then the compressor operation is controlled based on the target compressor control mode.

[0129] In an exemplary embodiment, Fig. 9 As shown, step 504 includes steps 702 to 706, wherein:

[0130] Step 702, when the current load state is a light load state, the corresponding target compressor control mode is to keep the current operating state unchanged. Specifically, when the current load state is a light load state, it means that the overall load of the compressor is not heavy, and the air conditioning equipment is also in a light load state and can operate reliably, so the whole machine maintains the current operating state unchanged.

[0131] Step 704, when the current load state is a heavy load state, the corresponding target compressor control mode is to control the compressor frequency to decrease. Specifically, when the current load state is a heavy load state, it means that the overall load of the compressor is in a heavy state, and the air conditioner is also in a heavy load state. The unit needs to adjust the operating frequency of the compressor according to the current parameters at this time, limit the compressor frequency from continuing to rise or appropriately reduce the compressor frequency, thereby reducing the heavy load state of the whole machine and ensuring the reliability of the whole machine.

[0132] Step 706, when the current load state is an overload state, the corresponding target compressor control mode is to control the compressor to stop running. Specifically, when the current load state is an overload state, it means that the overall load of the compressor is in a critical state, and the air conditioner is also in a serious overload state. The air conditioner can no longer reduce the heavy load of the whole machine by reducing the frequency of the compressor. In this case, the shutdown process should be performed, that is, the compressor should be controlled to stop running.

[0133] For example, refer to Figure 3In this application, a temperature collection device is set at a pipe position (A position) of the outdoor unit close to the compressor exhaust port, and a temperature collection device is set at a pipe position (B position) of the outdoor unit close to the compressor suction port, and the gas pipe temperature and the liquid pipe temperature are respectively collected as temperature-related parameters to realize the heating overload protection judgment of the air-conditioning equipment.

[0134] In an exemplary embodiment, Fig.10 As shown, step 206 includes steps 501 to 504, wherein:

[0135] Step 501, determining the gas-liquid temperature difference between the gas pipe temperature and the liquid pipe temperature.

[0136] Among them, the gas pipe temperature can be approximated as the temperature data of the compressor exhaust port, and the liquid pipe temperature can be approximated as the temperature data of the compressor suction port (return air port). Since the pressure and temperature of the refrigerant will increase after passing through the compressor, the exhaust temperature will usually be higher than the suction temperature. The temperature difference between the two can approximately characterize the cooling and heating capabilities of the air-conditioning equipment. For example, during the refrigeration process, in order to prevent liquid return, the return air pipeline generally requires a return air superheat of 8-10°C. If the return air pipeline is not well insulated, the superheat will far exceed 20°C. The higher the return air temperature, the higher the cylinder suction temperature and exhaust temperature. When the liquid pipe temperature (return air temperature) is too high, the difference between the gas and liquid temperatures will be smaller, which means that the compressor needs to bear a greater heat load.

[0137] Specifically, the gas pipe temperature and the liquid pipe temperature may be collected first, and then the difference between the gas pipe temperature and the liquid pipe temperature may be used as the gas-liquid temperature difference.

[0138] Step 503, determining the current load state of the air conditioning equipment according to the temperature range to which the gas pipe temperature belongs and the temperature range to which the gas-liquid temperature difference belongs.

[0139] It can be understood that, firstly, the gas pipe temperature is the most direct indicator to measure the compressor exhaust port temperature. Secondly, it can also be combined with the gas-liquid temperature difference for auxiliary judgment to determine the current load status of the air-conditioning equipment.

[0140] Specifically, the current load state of the air conditioning equipment can be determined by dividing the air pipe temperature into a plurality of temperature intervals, and then obtaining the current load state according to the corresponding relationship between the temperature intervals and the compressor load state, or the compressor load state calculation formula corresponding to the temperature interval. At the same time, on this basis, the gas-liquid temperature difference can also be divided into a plurality of temperature intervals, and then obtaining the current load state according to the corresponding relationship between the temperature intervals and the compressor load state, or the compressor load state calculation formula corresponding to the temperature interval.

[0141] It can be understood that when the air pipe temperature is divided into multiple temperature intervals, or the gas-liquid temperature difference is divided into multiple temperature intervals, the division method and the number of intervals are not fixed. Each temperature interval can be divided with a fixed temperature amplitude, or it can be divided according to a progressive temperature amplitude, or it can be an irregular temperature interval obtained by dividing according to any temperature amplitude. The setting can be selected according to the actual parameters of the specific air-conditioning equipment without limitation.

[0142] The following explanation is given by taking the first temperature threshold and the second temperature threshold as examples to obtain three temperature intervals, and the first temperature difference threshold as examples to obtain two temperature difference intervals. The first temperature threshold is less than the second temperature threshold. Among them, the specific values ​​of the first temperature threshold, the second temperature threshold and the first temperature difference threshold are not limited and can be determined according to actual technical requirements. For example, in an embodiment of the present application, the value range of the first temperature threshold may be 58~60°C, the value range of the second temperature threshold may be 70~75°C, and the value range of the first temperature difference threshold may be 10~15°C.

[0143] In an exemplary embodiment, Fig.11 As shown, step 503 includes steps 802 to 808, wherein:

[0144] Step 802, when the air pipe temperature is less than or equal to the first temperature threshold, determine that the current load state of the air conditioning device is a light load state. Specifically, when the air pipe temperature is less than or equal to the first temperature threshold, that is, when the air pipe temperature is in the first temperature interval, according to the corresponding relationship between the temperature interval and the load state of the compressor, it can be determined that the current load state of the air conditioning device is a light load state, that is, the overall load of the compressor is not heavy.

[0145] Step 804: When the air pipe temperature is greater than the first temperature threshold and less than the second temperature threshold, determine that the current load state of the air conditioning equipment is a heavy load state.

[0146] Specifically, when the air pipe temperature is greater than the first temperature threshold and less than the second temperature threshold, that is, when the air pipe temperature is in the second temperature range, based on the correspondence between the temperature range and the compressor load state, it can be determined that the current load state of the air-conditioning equipment is a heavy load state, that is, the overall load of the compressor is in a heavier state.

[0147] Step 806: When the air pipe temperature is greater than or equal to the second temperature threshold and the air-liquid temperature difference is greater than or equal to the first temperature difference threshold, determine that the current load state of the air conditioning equipment is a heavy load state.

[0148] Specifically, when the air pipe temperature is greater than or equal to the second temperature threshold, that is, the air pipe temperature is in the third temperature range, and at the same time the gas-liquid temperature difference is greater than or equal to the first temperature difference threshold, that is, the gas-liquid temperature difference is in the first temperature difference range, according to the correspondence between the temperature range and the compressor load state, it can be determined that the current load state of the air-conditioning equipment is a heavy load state, that is, the overall load of the compressor is in a heavier state.

[0149] Step 808: When the air pipe temperature is greater than or equal to the second temperature threshold and the air-liquid temperature difference is less than the first temperature difference threshold, determine that the current load state of the air conditioning equipment is an overload state.

[0150] Specifically, when the air pipe temperature is greater than or equal to the second temperature threshold, that is, the air pipe temperature is in the third temperature range, and the gas-liquid temperature difference is less than the first temperature difference threshold, that is, the gas-liquid temperature difference is in the second temperature difference range, according to the correspondence between the phase current interval and the compressor load state, it can be determined that the current load state of the air-conditioning equipment is an overload state, that is, the overall load of the compressor is in a critical state.

[0151] Step 504: According to the current load state and the preset correspondence between the load state and the compressor control mode, a target compressor control mode is correspondingly obtained to control the operation of the compressor. Please refer to the description of step 504 above and it will not be repeated here.

[0152] In an exemplary embodiment, the air conditioning control method further includes: when it is determined that the outdoor unit is in an abnormal temperature environment, heating overload protection for the air conditioning equipment can be implemented based on temperature-related parameters of the indoor unit.

[0153] Among them, the temperature-related parameter of the indoor unit can be the pipe temperature of the indoor unit, refer to Figure 3 The pipe temperature of the indoor unit is the temperature data collected at position C. According to the refrigerant flow path in the heating mode, this position can indirectly represent the compressor exhaust temperature, which can be used to achieve heating overload protection of the air-conditioning equipment.

[0154] Specifically, the current load state of the air conditioner can be determined according to the temperature range to which the pipe temperature of the indoor unit belongs, and then the target compressor control mode is obtained according to the current load state and the preset correspondence between the load state and the compressor control mode to control the operation of the compressor.

[0155] Determining the current load state of the air-conditioning equipment may be, for example, determining that the current load state of the air-conditioning equipment is a light load state when the pipe temperature is less than or equal to the third temperature threshold; determining that the current load state of the air-conditioning equipment is a heavy load state when the pipe temperature is greater than the third temperature threshold and less than the fourth temperature threshold; determining that the current load state of the air-conditioning equipment is a heavy load state when the pipe temperature is greater than or equal to the fourth temperature threshold. The specific values ​​of the third temperature threshold and the fourth temperature threshold are not limited and can be determined according to actual technical requirements. For example, in an embodiment of the present application, the value range of the third temperature threshold may be 54~56°C, and the value range of the fourth temperature threshold may be 60~62°C.

[0156] In an exemplary embodiment, the air conditioning control method further includes: determining whether the pipe temperature of the indoor unit is effectively detected. The effective detection is to exclude the situation that the temperature acquisition device corresponding to the pipe temperature fails, there is no open circuit or short circuit, but it is unable to perform effective detection, or the temperature acquisition device corresponding to the pipe temperature is not inserted into the temperature sensing package sleeve, and the pipe temperature cannot be effectively detected.

[0157] Specifically, the pipe temperature is collected twice at a preset time interval, and the temperature difference between the two temperatures is determined. When the temperature difference is non-zero, the pipe temperature is determined to be effectively detected. The preset time interval can be 3 to 4 minutes. When the temperature difference between the two temperatures is non-zero, that is, there is a temperature change in the pipe temperature, that is, the temperature acquisition device corresponding to the pipe temperature has not failed, and the data obtained by the test can effectively represent the pipe temperature of the indoor unit at this time, which can be used to realize the heating overload protection of the air-conditioning equipment.

[0158] In a specific embodiment, Fig.12 As shown, an air conditioning control method is provided to achieve heating overload protection of air conditioning equipment.

[0159] Specifically, after the air conditioner is turned on in heating mode, the pipe temperature T of the indoor unit can be obtained. 内 , the indoor unit pipe temperature T is adjusted by the following method 内 Make real-time judgments:

[0160] 1. When the indoor unit pipe temperature T 内 When ≤n1 (n1 is generally between 54 and 56°C), the unit maintains the current heating operation state;

[0161] 2. When n1<T 内 <n2 (n2 is generally taken at 60~62℃), the unit reduces the indoor evaporator tube temperature by limiting or reducing the frequency.

[0162] 3. When T内 ≥n2 (n2 is generally between 60 and 62°C), the unit will shut down for protection.

[0163] At the same time, the pipe temperature difference ΔT1 before and after time t1 can be obtained, and the pipe temperature T 内 Whether it is a valid detection or not:

[0164] 1. When the tube temperature difference ΔT1≠0, it is preliminarily judged that the tube temperature sensing package of the evaporator has not failed or the tube temperature sensing package of the evaporator has been inserted into the sensing package sleeve, and the tube temperature T of the indoor unit can be retained. 内 Perform heating overload protection.

[0165] 2. When the pipe temperature difference ΔT1 = 0, it is preliminarily judged that the pipe temperature sensing package of the evaporator has failed or the pipe temperature sensing package of the evaporator has not been inserted into the sensing package sleeve. The pipe temperature T 内 Cannot be used for heating overload protection.

[0166] Furthermore, the outdoor unit's gas pipe temperature T can be obtained. 气 , Liquid pipe temperature T 液 The temperature difference ΔT2 between the gas pipe and the liquid pipe and the phase current I of the compressor are used for heating overload protection.

[0167] Specifically, it can be determined whether the outdoor unit is in an abnormal temperature environment by first collecting thermal imaging image data or infrared temperature measurement data of the outdoor unit. If it is determined that the outdoor unit is in an abnormal temperature environment, the heating overload protection of the air-conditioning equipment is realized through the phase current I of the compressor; if it is determined that the outdoor unit is not in an abnormal temperature environment, the air pipe temperature T 气 , Liquid pipe temperature T 液 The temperature difference between the gas pipe and the liquid pipe ΔT2 realizes the heating overload protection of the air-conditioning equipment.

[0168] First, the gas pipe temperature T 气 , Liquid pipe temperature T 液 , the temperature difference between the gas pipe and the liquid pipe ΔT2 realizes the heating overload protection of the air conditioning equipment, which can be specifically:

[0169] 1. When the air pipe temperature T is detected 气 When ≤N1 (N1 is generally taken at 58~60℃), it means that the overall load of the compressor is not heavy, and the reliability of the air conditioner is running under a light load state. The whole machine maintains the current operating state.

[0170] 2. When N1<T 气When ≤N2 (N2 is generally taken at 70~75℃), it means that the overall load of the compressor is in a heavy state, and the air conditioner is also in a heavy load state. The unit needs to adjust the frequency of the compressor according to the current parameters at this time, limit the frequency of the compressor from continuing to rise or appropriately reduce the frequency of the compressor, thereby reducing the heavy load state of the whole machine and ensuring the reliable operation of the whole machine.

[0171] 3. When testing T 气 > N2 (N2 is generally between 70 and 75°C), the liquid pipe temperature T needs to be detected simultaneously 液 And the temperature difference ΔT2 between the gas pipe and the liquid pipe is processed and judged:

[0172] 3.1. When ΔT2≥N3 (N3 is between 10 and 15°C), it means that the overall load of the compressor is in a heavy state, and the air conditioner is also in a heavy load state. The unit needs to adjust the frequency of the compressor according to the current parameters at this time, limit the frequency of the compressor from continuing to rise, or appropriately reduce the frequency of the compressor, thereby reducing the heavy load state of the whole machine and ensuring the reliable operation of the whole machine.

[0173] 3.2. When ΔT2<N3 (N3 is between 10 and 15°C), it means that the overall load of the compressor is in a critical state, and the air conditioner is also in a serious overload state. The unit can no longer reduce the heavy load of the whole unit by reducing the frequency of the compressor. At this time, the unit should be shut down.

[0174] Secondly, when it is determined that the outdoor unit is in an abnormal temperature environment, the above method of judging by temperature-related parameters may have temperature distortion. For example, when detecting T 气 ≤N1, it may be affected by the heat or heat radiation of the surrounding environment. For example, there may be a cold source around it to reduce it, resulting in a high pressure load on the whole machine, which is prone to reliability problems of the whole machine. Or when the detection N1<T 气 ≤N2. At this time, although the temperature of T gas detection reaches the temperature of N1 and N2, it may be affected by the heat or thermal radiation of the surrounding environment. The temperature is only detected by the pipe temperature, and the temperature fluctuation will be relatively large. It is possible that the actual prototype load is already relatively low, but under the influence of the surrounding temperature, the temperature value of T gas is distorted (the actual prototype load is low, and the unit should be running properly. Due to the surrounding heat source, T gas is increased, resulting in the frequency reduction of the compressor. At that time, the room needs heating, so there will be a situation where the demand cannot be met, resulting in poor overall comfort and prone to customer complaints.

[0175] The heating overload protection of the air-conditioning equipment is realized by the phase current I of the compressor, which can be specifically:

[0176] 1. When the compressor phase current I≤i1 (the general value range of i1 is about 1~2A), it means that the overall load of the compressor is not heavy, and the reliability of the air conditioner is under a light load state. In this case, the whole machine maintains the current operating state.

[0177] 2. When i1<I<i2 (the general value range of i2 is about 4~5A), it means that the overall load of the compressor is in a heavy state, and the air conditioner is also in a heavy load state. The unit needs to adjust the frequency of the compressor according to the current parameters at this time, limit the frequency of the compressor to continue to rise or appropriately reduce the frequency of the compressor, thereby reducing the heavy load state of the whole machine and ensuring the reliable operation of the whole machine.

[0178] 3. When the compressor phase current I>i2 (i2 generally has a value range of about 4~5A), it means that the overall load of the compressor is in a critical state, and the air conditioner is also in a serious overload state. The unit can no longer reduce the heavy load of the whole unit by reducing the frequency of the compressor. At this time, the unit should be shut down.

[0179] In this embodiment, the control measures for heating overload protection are optimized so that the outdoor unit can be independently controlled to achieve heating load protection, thereby increasing the reliability of the system. At the same time, this type of heating load protection can reduce the reliance on the indoor unit in similar software control evaluations, thereby reducing the cost and cycle of certification and quickly passing safety certification. Simultaneously, the occurrence of false alarms and missed alarms caused by the influence of ambient temperature on the unit is reduced, the reliable operation of the air conditioner is improved, and the service life of the compressor is increased.

[0180] It should be understood that, although the various steps in the flowcharts involved in the above-mentioned embodiments are displayed in sequence according to the indication of the arrows, these steps are not necessarily executed in sequence according to the order indicated by the arrows. Unless there is a clear explanation in this article, the execution of these steps does not have a strict order restriction, and these steps can be executed in other orders. Moreover, at least a part of the steps in the flowcharts involved in the above-mentioned embodiments can include multiple steps or multiple stages, and these steps or stages are not necessarily executed at the same time, but can be executed at different times, and the execution order of these steps or stages is not necessarily to be carried out in sequence, but can be executed in turn or alternately with other steps or at least a part of the steps or stages in other steps.

[0181] Based on the same inventive concept, the embodiment of the present application also provides an air conditioning control device for implementing the air conditioning control method involved above. The implementation solution provided by the device to solve the problem is similar to the implementation solution recorded in the above method, so the specific limitations in one or more air conditioning control device embodiments provided below can refer to the limitations of the air conditioning control method above, and will not be repeated here.

[0182] In an exemplary embodiment, Fig.13 As shown, an air conditioning control device is provided, comprising: a temperature environment determination module 101, an abnormal protection module 102 and a normal protection module 103, wherein:

[0183] The temperature environment determination module 101 is used to determine whether the outdoor unit of the air-conditioning device is in an abnormal temperature environment after the air-conditioning device starts to operate in a heating mode;

[0184] The abnormal protection module 102 is used to implement heating overload protection for the air-conditioning device based on the compressor operating parameters of the air-conditioning device when it is determined that the outdoor unit is in an abnormal temperature environment;

[0185] The normal protection module 103 is used to implement heating overload protection for the air-conditioning equipment based on the temperature-related parameters of the outdoor unit when it is determined that the outdoor unit is not in an abnormal temperature environment.

[0186] In an exemplary embodiment, the temperature environment determination module 101 is also used to collect thermal imaging image data of the outdoor unit; perform image analysis based on the thermal imaging image data to obtain temperature analysis results; and determine whether the outdoor unit is in an abnormal temperature environment based on the temperature analysis results.

[0187] In an exemplary embodiment, the temperature environment determination module 101 is also used to collect infrared temperature measurement data of the outdoor unit; perform data analysis based on the infrared temperature measurement data to obtain temperature analysis results; and determine whether the outdoor unit is in an abnormal temperature environment based on the temperature analysis results.

[0188] In an exemplary embodiment, the temperature environment determination module 101 is also used to determine that the outdoor unit is in an abnormal temperature environment when the temperature analysis result shows that there is a heat source or a cold source; when the temperature analysis result shows that the outdoor unit is in a normal temperature environment, determine that the outdoor unit is not in an abnormal temperature environment.

[0189] In an exemplary embodiment, the compressor operating parameters include compressor phase current;

[0190] The abnormal protection module 102 is also used to determine the current load state of the air-conditioning equipment according to the phase current interval to which the compressor phase current belongs; according to the current load state and the preset correspondence between the load state and the compressor control mode, the target compressor control mode is obtained to control the operation of the compressor.

[0191] In an exemplary embodiment, the abnormal protection module 102 is also used to determine that the current load state of the air-conditioning equipment is a light load state when the compressor phase current is less than or equal to the first phase current threshold; determine that the current load state of the air-conditioning equipment is a heavy load state when the compressor phase current is greater than the first phase current threshold and less than the second phase current threshold; determine that the current load state of the air-conditioning equipment is an overload state when the compressor phase current is greater than or equal to the second phase current threshold; the first phase current threshold is less than the second phase current threshold.

[0192] In an exemplary embodiment, the temperature-related parameters of the outdoor unit include a gas pipe temperature and a liquid pipe temperature;

[0193] The normal protection module 103 is also used to determine the gas-liquid temperature difference between the gas pipe temperature and the liquid pipe temperature; determine the current load state of the air-conditioning equipment according to the temperature range to which the gas pipe temperature belongs and the temperature range to which the gas-liquid temperature difference belongs; and obtain the target compressor control mode according to the current load state and the preset correspondence between the load state and the compressor control mode to control the operation of the compressor.

[0194] In an exemplary embodiment, the normal protection module 103 is also used to determine that the current load state of the air-conditioning equipment is a light load state when the air pipe temperature is less than or equal to the first temperature threshold; determine that the current load state of the air-conditioning equipment is a heavy load state when the air pipe temperature is greater than the first temperature threshold and less than the second temperature threshold; determine that the current load state of the air-conditioning equipment is a heavy load state when the air pipe temperature is greater than or equal to the second temperature threshold and the gas-liquid temperature difference is greater than or equal to the first temperature difference threshold; determine that the current load state of the air-conditioning equipment is an overload state when the air pipe temperature is greater than or equal to the second temperature threshold and the gas-liquid temperature difference is less than the first temperature difference threshold; the first temperature threshold is less than the second temperature threshold.

[0195] In an exemplary embodiment, the abnormal protection module 102 or the normal protection module 103 is also used to obtain the target compressor control mode of keeping the current operating state unchanged when the current load state is a light load state; to obtain the target compressor control mode of controlling the compressor frequency to decrease when the current load state is a heavy load state; and to obtain the target compressor control mode of controlling the compressor to stop running when the current load state is an overload state.

[0196] Each module in the above-mentioned air conditioning control device can be implemented in whole or in part by software, hardware or a combination thereof. Each of the above-mentioned modules can be embedded in or independent of a processor in a computer device in the form of hardware, or can be stored in a memory in a computer device in the form of software, so that the processor can call and execute operations corresponding to each of the above modules.

[0197] In an exemplary embodiment, Figure 1 As shown, the air-conditioning equipment may include a controller 110, a temperature environment acquisition device 120 and a temperature sensor 130. The temperature environment acquisition device 120 is used to determine the temperature environment of the outdoor unit of the air-conditioning equipment. The temperature sensor 130 is used to detect temperature-related parameters of the outdoor unit. The controller 110 is used to implement heating overload protection for the air-conditioning equipment based on the air-conditioning control method provided in the embodiment of the present application.

[0198] It can be understood that the implementation solution provided by the air-conditioning equipment to solve the problem is similar to the implementation solution recorded in the above-mentioned air-conditioning equipment control method. Therefore, the specific limitations in the embodiment of the air-conditioning equipment can refer to the limitations on the air-conditioning equipment control method in the above text, and will not be repeated here.

[0199] In an exemplary embodiment, a computer device is provided. The computer device may be a server, and its internal structure diagram may be as shown in FIG. Fig.14 As shown. The computer device includes a processor, a memory, an input / output interface (Input / Output, referred to as I / O) and a communication interface. Among them, the processor, the memory and the input / output interface are connected through a system bus, and the communication interface is connected to the system bus through the input / output interface. Among them, the processor of the computer device is used to provide computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system, a computer program and a database. The internal memory provides an environment for the operation of the operating system and the computer program in the non-volatile storage medium. The database of the computer device is used to store compressor operating parameters and temperature-related parameter data of the outdoor unit. The input / output interface of the computer device is used to exchange information between the processor and an external device. The communication interface of the computer device is used to communicate with an external terminal through a network connection. When the computer program is executed by the processor, an air conditioning control method is implemented.

[0200] Those skilled in the art will understand that Fig.14 The structure shown in the figure is only a block diagram of a part of the structure related to the solution of the present application, and does not constitute a limitation on the computer device to which the solution of the present application is applied. The specific computer device may include more or fewer components than those shown in the figure, or combine certain components, or have a different arrangement of components.

[0201] In an exemplary embodiment, a computer device is provided, including a memory and a processor, wherein a computer program is stored in the memory, and the processor implements the steps described in the above-mentioned gas water heater control method when executing the computer program.

[0202] In an exemplary embodiment, a computer-readable storage medium is provided, on which a computer program is stored. When the computer program is executed by a processor, the steps described in the above-mentioned gas water heater control method are implemented.

[0203] In an exemplary embodiment, a computer program product is provided, including a computer program, which implements the steps described in the above-mentioned gas water heater control method when executed by a processor.

[0204] A person of ordinary skill in the art can understand that all or part of the processes in the above-mentioned embodiment method can be completed by instructing the relevant hardware through a computer program, and the computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes of the embodiments of the above-mentioned methods. Among them, any reference to the memory, database or other medium used in the embodiments provided in the present application can include at least one of non-volatile memory and volatile memory. Non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory, optical memory, high-density embedded non-volatile memory, resistive random access memory (ReRAM), magnetic random access memory (MRAM), ferroelectric random access memory (FRAM), phase change memory (PCM), graphene memory, etc. Volatile memory can include random access memory (RAM) or external cache memory, etc. As an illustration and not limitation, RAM can be in various forms, such as static random access memory (SRAM) or dynamic random access memory (DRAM). The database involved in each embodiment provided in this application may include at least one of a relational database and a non-relational database. Non-relational databases may include distributed databases based on blockchains, etc., but are not limited to this. The processor involved in each embodiment provided in this application may be a general-purpose processor, a central processing unit, a graphics processor, a digital signal processor, a programmable logic device, a data processing logic device based on quantum computing, an artificial intelligence (AI) processor, etc., but are not limited to this.

[0205] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this application.

[0206] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the present application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the attached claims.

Claims

1. An air conditioning control method, characterized in that: The method comprises: After the air conditioning device starts to operate in a heating mode, determining whether the outdoor unit of the air conditioning device is in an abnormal temperature environment; When it is determined that the outdoor unit is in an abnormal temperature environment, heating overload protection is implemented for the air-conditioning equipment based on the compressor operating parameters of the air-conditioning equipment; When it is determined that the outdoor unit is not in an abnormal temperature environment, heating overload protection of the air-conditioning equipment is implemented based on temperature-related parameters of the outdoor unit.

2. The method according to claim 1, characterized in that The step of determining whether the outdoor unit of the air conditioning equipment is in an abnormal temperature environment comprises: Collecting thermal imaging image data of the outdoor unit; Performing image analysis based on the thermal imaging image data to obtain a temperature analysis result; Determine whether the outdoor unit is in an abnormal temperature environment according to the temperature analysis result.

3. The method according to claim 1, characterized in that The step of determining whether the outdoor unit of the air conditioning equipment is in an abnormal temperature environment comprises: Collecting infrared temperature measurement data of the outdoor unit; Performing data analysis based on the infrared temperature measurement data to obtain a temperature analysis result; Determine whether the outdoor unit is in an abnormal temperature environment according to the temperature analysis result.

4. The method according to claim 2 or 3, characterized in that: The step of determining whether the outdoor unit of the air-conditioning equipment is in an abnormal temperature environment according to the temperature analysis result includes: When the temperature analysis result indicates that a heat source or a cold source exists, determining that the outdoor unit is in an abnormal temperature environment; When the temperature analysis result is a normal temperature environment, it is determined that the outdoor unit is not in an abnormal temperature environment.

5. The method according to claim 1, characterized in that The compressor operating parameters include compressor phase current; The method of implementing heating overload protection for the air-conditioning equipment based on the compressor operating parameters of the air-conditioning equipment includes: Determining a current load state of the air conditioning device according to a phase current interval to which the compressor phase current belongs; According to the current load state and the preset corresponding relationship between the load state and the compressor control mode, a target compressor control mode is correspondingly obtained to control the operation of the compressor.

6. The method according to claim 5, characterized in that The determining the current load state of the air conditioning device according to the phase current interval to which the compressor phase current belongs includes: When the compressor phase current is less than or equal to the first phase current threshold, determining that the current load state of the air-conditioning equipment is a light load state; When the compressor phase current is greater than a first phase current threshold and less than a second phase current threshold, determining that the current load state of the air-conditioning device is a heavy load state; When the compressor phase current is greater than or equal to the second phase current threshold, determining that the current load state of the air-conditioning equipment is an overload state; The first phase current threshold is smaller than the second phase current threshold.

7. The method according to claim 1, characterized in that The temperature-related parameters of the outdoor unit include gas pipe temperature and liquid pipe temperature; The method of implementing heating overload protection for the air-conditioning device based on the temperature-related parameters of the outdoor unit includes: Determining a gas-liquid temperature difference between the gas pipe temperature and the liquid pipe temperature; Determining the current load state of the air conditioning device according to the temperature interval to which the gas pipe temperature belongs and the temperature interval to which the gas-liquid temperature difference belongs; According to the current load state and the preset corresponding relationship between the load state and the compressor control mode, a target compressor control mode is correspondingly obtained to control the operation of the compressor.

8. The method according to claim 7, characterized in that The determining the current load state of the air conditioning device according to the temperature interval to which the gas pipe temperature belongs and the temperature interval to which the gas-liquid temperature difference belongs includes: When the air pipe temperature is less than or equal to a first temperature threshold, determining that the current load state of the air conditioning equipment is a light load state; When the air pipe temperature is greater than a first temperature threshold and less than a second temperature threshold, determining that the current load state of the air conditioning equipment is a heavy load state; When the gas pipe temperature is greater than or equal to the second temperature threshold, and the gas-liquid temperature difference is greater than or equal to the first temperature difference threshold, determining that the current load state of the air conditioning equipment is a heavy load state; When the gas pipe temperature is greater than or equal to the second temperature threshold and the gas-liquid temperature difference is less than the first temperature difference threshold, determining that the current load state of the air conditioning equipment is an overload state; The first temperature threshold is lower than the second temperature threshold.

9. The method according to claim 5 or 7, characterized in that: The step of obtaining a target compressor control mode according to the current load state and a preset correspondence between the load state and the compressor control mode to control the operation of the compressor includes: When the current load state is a light load state, the corresponding target compressor control mode is to keep the current operating state unchanged; When the current load state is a heavy load state, the corresponding target compressor control mode is to control the compressor frequency to decrease; When the current load state is an overload state, the corresponding target compressor control mode is to control the compressor to stop running.

10. An air conditioning control device, characterized in that: The device comprises: A temperature environment determination module, used to determine whether the outdoor unit of the air-conditioning device is in an abnormal temperature environment after the air-conditioning device starts to operate in a heating mode; an abnormal protection module, for implementing heating overload protection for the air-conditioning equipment based on the compressor operating parameters of the air-conditioning equipment when it is determined that the outdoor unit is in an abnormal temperature environment; The normal protection module is used to implement heating overload protection for the air-conditioning equipment based on the temperature-related parameters of the outdoor unit when it is determined that the outdoor unit is not in an abnormal temperature environment.

11. An air conditioning device, characterized in that: It includes a controller, a temperature environment acquisition device and a temperature sensor, wherein the temperature environment acquisition device is used to determine the temperature environment of the outdoor unit of the air-conditioning equipment, the temperature sensor is used to detect the temperature-related parameters of the outdoor unit, and the controller is used to implement heating overload protection for the air-conditioning equipment based on the air-conditioning control method described in any one of claims 1 to 9.

12. 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 9 are implemented.

13. A computer program product, comprising a computer program, 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 9 are implemented.

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