Temperature correction method, control method, air conditioning system and storage medium

Abstract

The embodiment of the application provides a temperature correction method, a control method, an air conditioning system and a storage medium, wherein the temperature correction method comprises the following steps: obtaining the running state of an outdoor unit and an indoor unit; in the case that the outdoor unit is in a heating running state, determining a target indoor unit in all indoor units, wherein the target indoor unit is in a non-heating running state, and a fan of the target indoor unit stops running; determining a correction value according to an indoor environment temperature corresponding to the target indoor unit and an indoor unit heat exchanger coil temperature; and correcting the indoor environment temperature by using the correction value to obtain an indoor environment target temperature. For a multi-split type air conditioning system, in the case that part of the indoor units are in a heating state, the embodiment of the application can reduce the influence of the self heating of the indoor unit in the shutdown or standby state on the room temperature detection, so that the air conditioning system can obtain an accurate indoor environment target temperature and normally work according to the indoor environment target temperature, thereby improving the control accuracy of the air conditioning system.

Description

Technical Field

[0001] This application relates to the field of air conditioner technology, and in particular to a temperature correction method, control method, air conditioning system and storage medium. Background Technology

[0002] In related technologies, temperature sensors are often installed at the return air location of the indoor unit of an air conditioner. The indoor ambient temperature is determined by the return air temperature. The air conditioner then controls cooling or heating based on the set temperature and the detected indoor ambient temperature. For example, it determines whether to cool or heat, or adjusts the output of cooling or heating capacity.

[0003] However, for multi-split air conditioners, when some indoor units are in heating mode while others are off or have reached their set temperature and stopped, the compressor remains running. Because the throttling device in one indoor unit is located at the outlet of the heat exchanger (for heating), high-temperature gaseous refrigerant enters the heat exchanger of the off or stopped unit, keeping it at a high temperature. This high temperature in the heat exchanger raises the air temperature inside the indoor unit, causing the room temperature sensor at the return air location to detect a higher indoor ambient temperature than the actual room temperature.

[0004] Because the room temperature sensor detects an excessively high temperature, the indoor unit may mistakenly interpret the actual room temperature as having reached the set temperature when it is turned on, causing the indoor unit to shut down immediately upon reaching the set temperature and thus be unable to heat the room. Summary of the Invention

[0005] This application aims to address at least one of the technical problems existing in the prior art. To this end, this application proposes a temperature correction method, a control method, an air conditioning system, and a storage medium, designed to correct the detected indoor ambient temperature and improve the control accuracy of the air conditioning system.

[0006] In a first aspect, embodiments of this application provide a temperature correction method for a room temperature sensor in an air conditioning system. The air conditioning system includes an outdoor unit and multiple indoor units, and each indoor unit has a return air vent equipped with the room temperature sensor, which is used to detect the indoor ambient temperature. The temperature correction method includes:

[0007] Obtain the operating status of the outdoor unit and the indoor unit;

[0008] When the outdoor unit is in heating mode, a target indoor unit is identified among all the indoor units, wherein the target indoor unit is in non-heating mode and the fan of the target indoor unit is stopped.

[0009] determine a correction value according to the indoor environment temperature corresponding to the target indoor unit and an indoor unit heat exchanger coil temperature;

[0010] correct the indoor environment temperature by using the correction value to obtain an indoor environment target temperature.

[0011] According to some embodiments of the present application, the determining a correction value according to the indoor environment temperature corresponding to the target indoor unit and an indoor unit heat exchanger coil temperature comprises:

[0012] inputting the indoor environment temperature and the indoor unit heat exchanger coil temperature into a correction value calculation model to obtain a correction value;

[0013] The correction value calculation model comprises a first input variable, a second input variable, a first correction coefficient of the indoor environment temperature, a second correction coefficient of the indoor unit heat exchanger coil temperature and an overall correction coefficient, the first input variable is used to be assigned as the indoor environment temperature, and the second input variable is used to be assigned as the indoor unit heat exchanger coil temperature.

[0014] According to some embodiments of the present application, the correcting the indoor environment temperature by using the correction value to obtain an indoor environment target temperature comprises:

[0015] obtaining a first cumulative time of the target indoor unit under a correction condition, wherein the correction condition is that the outdoor unit is in a heating operation state, the target indoor unit is in a non-heating operation state and a fan of the target indoor unit stops running;

[0016] correcting the indoor environment temperature by using the correction value and the first cumulative time to obtain an indoor environment target temperature.

[0017] According to some embodiments of the present application, the correcting the indoor environment temperature by using the correction value and the first cumulative time to obtain an indoor environment target temperature comprises one of the following:

[0018] inputting the indoor environment temperature, the correction value and the first cumulative time into a first temperature calculation model to obtain an indoor environment target temperature;

[0019] The first temperature calculation model comprises a third input variable, a fourth input variable, a fifth input variable and a first time constant, the third input variable is used to be assigned as the indoor environment temperature, the fourth input variable is used to be assigned as the correction value, and the fifth input variable is used to be assigned as the first cumulative time.

[0020] According to some embodiments of the present application, the temperature correction method further comprises:

[0021] When the target indoor unit is switched from satisfying the correction condition to not satisfying the correction condition, a second accumulated time of the target indoor unit under the condition of not satisfying the correction condition is obtained;

[0022] The indoor environment temperature is corrected by using the correction value and the second accumulated time to obtain an indoor environment target temperature.

[0023] According to some embodiments of the present application, the indoor environment temperature is corrected by using the correction value and the second accumulated time to obtain an indoor environment target temperature, including:

[0024] The indoor environment temperature, the correction value and the second accumulated time are input into a second temperature calculation model to obtain an indoor environment target temperature.

[0025] The second temperature calculation model includes a sixth input variable, a seventh input variable, an eighth input variable and a second time constant, the sixth input variable is used to be assigned as the indoor environment temperature, the seventh input variable is used to be assigned as the correction value, and the eighth input variable is used to be assigned as the second accumulated time.

[0026] According to some embodiments of the present application, for the outdoor unit in the heating operation state, the compressor of the outdoor unit is in the operation state, and the four-way valve of the indoor unit is switched to the heating flow direction.

[0027] According to some embodiments of the present application, for the indoor unit in the heating operation state, the fan of the indoor unit is in the operation state, and the refrigerant flows through the throttling device of the indoor unit.

[0028] In a second aspect, embodiments of the present application provide a control method of an air conditioning system, the control method comprising:

[0029] Obtaining an indoor set temperature;

[0030] Obtaining an indoor environment target temperature by using the temperature correction method of the first aspect;

[0031] Starting the target indoor unit to heat according to the indoor set temperature and the indoor environment target temperature.

[0032] In a third aspect, embodiments of the present application provide an air conditioning system, comprising a memory, a processor and a computer program stored in the memory and executable on the processor, and the processor executes the computer program to execute the temperature correction method of the first aspect and / or the control method of the second aspect.

[0033] In a fourth aspect, the embodiments of the present application provide a computer readable storage medium storing computer executable instructions for executing the temperature correction method of the first aspect and / or the control method of the second aspect.

[0034] According to the technical solutions of the embodiments of the present application, at least the following beneficial effects are achieved: first, the embodiments of the present application acquire the operating states of the outdoor unit and the indoor units; then, in the case that the outdoor unit is in a heating operating state, the embodiments of the present application determine a target indoor unit from all the indoor units, wherein the target indoor unit is in a non-heating operating state and the fan of the target indoor unit stops operating; next, the embodiments of the present application determine a correction value according to the indoor environment temperature corresponding to the target indoor unit and the indoor unit heat exchanger coil temperature; finally, the embodiments of the present application correct the indoor environment temperature by using the correction value to obtain an indoor environment target temperature. For a multi-split type air conditioning system, in the case that some indoor units are heating, the embodiments of the present application can correct the indoor environment temperature by using the indoor environment temperature and the indoor unit heat exchanger coil temperature to obtain the indoor environment target temperature, thereby reducing the influence of the self-heating of the indoor units in the shutdown state or standby state on the room temperature detection, enabling the air conditioning system to obtain an accurate indoor environment target temperature and work normally according to the indoor environment target temperature, and thus improving the control accuracy of the air conditioning system.

[0035] Additional aspects and advantages of the present application will be in part apparent and in part pointed out hereinafter. BRIEF DESCRIPTION OF DRAWINGS

[0036] The accompanying drawings are included to provide a further understanding of the technical solutions of the present application, constitute a part of the specification and are used to explain the technical solutions of the embodiments of the present application together with the embodiments of the present application, but do not constitute a limitation to the technical solutions of the present application.

[0037] Figure 1 is a schematic diagram of the heating flow direction of the air conditioning system provided by an embodiment of the present application;

[0038] Figure 2 is a flowchart of the temperature correction method of the room temperature sensor of the air conditioning system provided by an embodiment of the present application;

[0039] Figure 3 is a flowchart of the temperature correction method of the room temperature sensor of the air conditioning system provided by another embodiment of the present application;

[0040] Figure 4 is a flowchart of the temperature correction method of the room temperature sensor of the air conditioning system provided by another embodiment of the present application;

[0041] Figure 5is a flow chart of a temperature correction method of a room temperature sensor of an air conditioning system provided by another embodiment of the present application;

[0042] Figure 6 is a flow chart of a temperature correction method of a room temperature sensor of an air conditioning system provided by another embodiment of the present application;

[0043] Figure 7 is a flow chart of a temperature correction method of a room temperature sensor of an air conditioning system provided by another embodiment of the present application;

[0044] Figure 8 is a flow chart of a temperature correction method of a room temperature sensor of an air conditioning system provided by another embodiment of the present application;

[0045] Figure 9 is a flow chart of a control method of an air conditioning system provided by another embodiment of the present application;

[0046] Figure 10 is a schematic diagram of a controller for executing the temperature correction method or the control method provided by another embodiment of the present application. DETAILED DESCRIPTION

[0047] Embodiments of the present application are described in detail below with reference to the accompanying drawings, in which examples of the embodiments are shown, and the same or similar notations or signs represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are for the purpose of explaining the present application only, and should not be understood as limiting the present application.

[0048] In the description of the present application, it should be understood that the orientation description, such as the orientation or position relationship indicated by up, down, front, back, left, right, etc. is based on the orientation or position relationship shown in the drawings, and is only for the purpose of facilitating the description of the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0049] In the description of the present application, the meaning of several is one or more, and the meaning of multiple is two or more. Greater than, less than, more than, etc. are understood as not including the number itself, and above, below, etc. are understood as including the number itself. If it is described as first, second, etc., it is only for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or the order of indicated technical features.

[0050] In the description of the present application, unless otherwise explicitly limited, the words such as setting, installing, connecting, etc. should be broadly understood, and the person skilled in the art can reasonably determine the specific meaning of the above words in the present application in combination with the specific content of the technical solution.

[0051] In some cases, a temperature sensor is often installed at the return air location of the indoor unit of an air conditioner. The indoor ambient temperature is determined by the return air temperature. The air conditioner then controls cooling or heating based on the set temperature and the detected indoor ambient temperature. For example, it determines whether to cool or heat, or adjusts the output of cooling or heating capacity.

[0052] However, for multi-split air conditioners, when some indoor units are in heating mode while others are off or have reached their set temperature and stopped, the compressor remains running. Because the throttling device in one indoor unit is located at the outlet of the heat exchanger (for heating), high-temperature gaseous refrigerant enters the heat exchanger of the off or stopped unit, keeping it at a high temperature. This high temperature in the heat exchanger raises the air temperature inside the indoor unit, causing the room temperature sensor at the return air location to detect a higher indoor ambient temperature than the actual room temperature.

[0053] Because the room temperature sensor detects an excessively high temperature, the indoor unit may mistakenly interpret the actual room temperature as having reached the set temperature when it is turned on, causing the indoor unit to shut down immediately upon reaching the set temperature and thus be unable to heat the room.

[0054] Based on the above, this application proposes a temperature correction method, a control method, an air conditioning system, and a storage medium, aiming to correct the detected indoor ambient temperature and improve the control accuracy of the air conditioning system.

[0055] The various embodiments of the air conditioning system of this application will be further described below with reference to the accompanying drawings.

[0056] like Figure 1 As shown, Figure 1 This is a schematic diagram of the heating flow direction of an air conditioning system provided in one embodiment of this application.

[0057] In one embodiment, the air conditioning system of this application embodiment is provided with an outdoor unit 110 and a plurality of indoor units 120, wherein each indoor unit 120 is provided with a room temperature sensor for detecting the indoor ambient temperature at its return air vent.

[0058] It should be noted that, in heating mode, the embodiments of this application can control all indoor units 120 to heat simultaneously; or they can control some indoor units 120 to heat while other indoor units 120 are in a powered-off or standby state.

[0059] It is understood that the aforementioned room temperature sensor refers to a sensor that can sense the indoor ambient temperature and convert it into a usable output signal. Based on the measurement method, they can be divided into two main categories: contact and non-contact. Based on the sensor materials and electronic component characteristics, they can be divided into two categories: resistance temperature detectors (RTDs) and thermocouples.

[0060] In addition, it is understood that the type of temperature sensor can be a thermocouple temperature sensor, a thermistor temperature sensor, a resistance temperature sensor, an IC temperature sensor, or other types of temperature sensors. This application does not limit the specific type of temperature sensor.

[0061] In another embodiment, the air conditioning system in this application embodiment is also provided with a compressor 130, a four-way valve 140 and a throttling device 150. When in heating mode, the refrigerant discharged by the compressor 130 flows to the indoor unit 120 through the four-way valve 140. After passing through the indoor unit 120, the refrigerant flows to the outdoor unit 110 through the throttling device 150. Then, the refrigerant flowing through the outdoor unit 110 flows back to the return port of the compressor 130 through the four-way valve 140.

[0062] In one embodiment, the throttling device 150 described above can be an electronic expansion valve or a capillary tube.

[0063] Understandably, the capillary tube mentioned above is the simplest flow-regulating device in an air conditioner. It is a copper tube of a specified length with an inner diameter typically ranging from 0.5 mm to 2 mm. Its advantages are ease of manufacture and low cost; its disadvantage is the lack of flow regulation functionality.

[0064] Furthermore, it is understandable that the aforementioned electronic expansion valve can be structured into three parts: detection, control, and execution. Its advantages include a wide flow adjustment range, high control precision, suitability for intelligent control, and the ability to adapt to rapid changes in refrigerant flow for high efficiency. In other words, an electronic expansion valve can be considered a smart capillary tube with a variable inner diameter.

[0065] Based on the hardware structure of the air conditioning system described above, various embodiments of the temperature correction method for the room temperature sensor of the air conditioning system of this application are presented below.

[0066] like Figure 2 As shown, Figure 2 This is a flowchart of a temperature correction method for a room temperature sensor in an air conditioning system according to an embodiment of this application. This temperature correction method can be applied to the air conditioning system of any of the above embodiments and may include, but is not limited to, steps S210, S220, S230, and S240.

[0067] Step S210: Obtain the operating status of the outdoor unit and the indoor unit;

[0068] Step S220, in the case that the outdoor unit is in the heating operation state, determining a target indoor unit in all indoor units, wherein the target indoor unit is in the non-heating operation state, and the fan of the target indoor unit stops running;

[0069] Step S230, determining a correction value according to the indoor environment temperature corresponding to the target indoor unit and the indoor unit heat exchanger coil temperature;

[0070] Step S240, correcting the indoor environment temperature by using the correction value to obtain an indoor environment target temperature.

[0071] In an embodiment, first, the embodiment of the present application needs to detect the running state of the outdoor unit and the running state of all indoor units; then, in the case that part of the indoor units are in the heating state, the target indoor unit in the non-heating operation state and the fan of which stops running is screened out; then, since the indoor environment temperature detected by the room temperature sensor of the target indoor unit is inaccurate, the indoor environment temperature needs to be corrected, specifically, the correction value can be calculated according to the indoor environment temperature and the indoor unit heat exchanger coil temperature, and then the indoor environment temperature is corrected by using the correction value, so as to obtain the corrected indoor environment target temperature.

[0072] According to the technical scheme of the embodiment of the present application, for the multi-split type air conditioning system, in the case that part of the indoor units are in the heating state, the indoor environment target temperature can be obtained by correcting the indoor environment temperature according to the indoor environment temperature and the indoor unit heat exchanger coil temperature, so as to reduce the influence of the self-heating of the indoor unit in the shutdown state or standby state on the room temperature detection, make the air conditioning system obtain the accurate indoor environment target temperature and work normally according to the indoor environment target temperature, and thus improve the control accuracy of the air conditioning system.

[0073] It should be noted that the running state described above can be the heating operation state, the cooling operation state, the shutdown state, the standby state, or other types of running states, which are not limited in the embodiment of the present application.

[0074] It should be noted that for the outdoor unit in the heating operation state, the compressor of the outdoor unit is in the running state, and the four-way valve of the indoor unit is switched to the heating flow direction.

[0075] In addition, it should be noted that for the indoor unit in the heating operation state, the fan of the indoor unit is in the running state, and the refrigerant flows through the throttling device of the indoor unit.

[0076] It can be understood that, in order to obtain the indoor unit heat exchanger coil temperature of the target indoor unit, a coil temperature sensor can be arranged at the coil of the indoor unit heat exchanger, which is a sensor capable of sensing the indoor unit heat exchanger coil temperature and converting it into an available output signal. According to the measurement method, it can be divided into two categories: contact type and non-contact type. According to the characteristics of sensor materials and electronic elements, it can be divided into two categories: thermal resistance and thermocouple.

[0077] In addition, it can be understood that, as for the type of temperature sensor, it can be a thermocouple type temperature sensor, a thermistor type temperature sensor, a resistance temperature sensor, an IC temperature sensor, or other types of temperature sensors. The specific type of temperature sensor is not limited in the embodiments of the present application.

[0078] In addition, as shown in Figure 3 , the flowchart of the temperature correction method of the air conditioning system room temperature sensor provided by another embodiment of the present application is shown. Figure 3 As for the determination of the correction value according to the indoor environment temperature corresponding to the target indoor unit and the indoor unit heat exchanger coil temperature in step S230, it can include but is not limited to steps S310 and S320.

[0079] Step S310, input the indoor environment temperature and the indoor unit heat exchanger coil temperature into the correction value calculation model; wherein the correction value calculation model includes a first input variable, a second input variable, a first correction coefficient of the indoor environment temperature, a second correction coefficient of the indoor unit heat exchanger coil temperature, and an overall correction coefficient, the first input variable is used to be assigned to the indoor environment temperature, and the second input variable is used to be assigned to the indoor unit heat exchanger coil temperature.

[0080] Step S320, obtain the correction value through the correction value calculation model.

[0081] In an embodiment, after obtaining the indoor environment temperature and the indoor unit heat exchanger coil temperature, the embodiments of the present application can directly input the indoor environment temperature and the indoor unit heat exchanger coil temperature into the correction value calculation model, and then the correction value calculation model will output the corresponding correction value after analysis and processing.

[0082] It should be noted that, as for the above-mentioned correction value calculation model, it can be a calculation model including a calculation formula, a mapping model including the mapping relationship among the indoor environment temperature, the indoor unit heat exchanger coil temperature, and the correction value, a trained neural network model, or other types of models. The type of correction value calculation model is not limited in the embodiments of the present application.

[0083] Specifically, regarding the specific process of obtaining the correction value from the indoor environment temperature and the indoor unit heat exchanger coil temperature described above, the correction value can be calculated by inputting the indoor environment temperature and the indoor unit heat exchanger coil temperature into a calculation formula, the correction value can be determined by looking up a table according to the indoor environment temperature and the indoor unit heat exchanger coil temperature, the correction value can be calculated by inputting the indoor environment temperature and the indoor unit heat exchanger coil temperature into a trained neural network model, or the correction value can be obtained by other means. The determination method of the correction value is not limited in the embodiments of the application.

[0084] It is worth noting that in the correction value calculation model described above, the first input variable is multiplied by the first correction coefficient, the second input variable is multiplied by the second correction coefficient, and the overall correction coefficient is added to the two product values. Specifically, the first product value of the indoor environment temperature and the first correction coefficient can be calculated, and the second product value of the indoor unit heat exchanger coil temperature and the second correction coefficient can be calculated. Then, the first product value, the second product value and the overall correction coefficient are added to obtain the correction value.

[0085] In addition, as shown in Figure 4 , Figure 4 is a flowchart of a temperature correction method of an air conditioning system room temperature sensor provided by another embodiment of the application. Regarding the step S240 of correcting the indoor environment temperature by using the correction value to obtain the indoor environment target temperature, it can include but is not limited to steps S410 and S420.

[0086] Step S410, obtaining a first cumulative time of the target indoor unit under a correction condition, wherein the correction condition is that the outdoor unit is in a heating operation state, the target indoor unit is in a non-heating operation state, and the fan of the target indoor unit stops running;

[0087] Step S420, correcting the indoor environment temperature by using the correction value and the first cumulative time to obtain the indoor environment target temperature.

[0088] In an embodiment, since the influence of the heat of the target indoor unit during the shutdown state or standby state on the room temperature sensor changes over time, the embodiments of the application introduce a time coefficient to correct the correction value, so that the correction value can be more in line with the actual situation. Specifically, the embodiments of the application need to obtain a first cumulative time of the target indoor unit under a correction condition, then correct the correction value by using the first cumulative time, and finally correct the indoor environment temperature by using the corrected correction value to obtain the final indoor environment target temperature.

[0089] In addition, as shown in Figure 5 , Figure 5is a flowchart of a temperature correction method of a room temperature sensor of an air conditioning system provided by another embodiment of the present application. Regarding the correction of the indoor environment temperature by using the correction value and the first accumulated time in step S420 to obtain the indoor environment target temperature, it can include but is not limited to steps S510 and S520.

[0090] Step S510, inputting the indoor environment temperature, the correction value and the first accumulated time into a first temperature calculation model; wherein the first temperature calculation model includes a third input variable, a fourth input variable, a fifth input variable and a first time constant, the third input variable is used to be assigned as the indoor environment temperature, the fourth input variable is used to be assigned as the correction value, and the fifth input variable is used to be assigned as the first accumulated time.

[0091] Step S520, obtaining the indoor environment target temperature by the first temperature calculation model.

[0092] In an embodiment, after obtaining the indoor environment temperature, the correction value and the first accumulated time, the embodiment of the present application can directly input the indoor environment temperature, the correction value and the first accumulated time into the first temperature calculation model, and then the first temperature calculation model will output the final indoor environment target temperature after analysis and processing.

[0093] It should be noted that, regarding the above-mentioned first temperature calculation model, it can be a calculation model including a calculation formula, or a mapping model including the mapping relationship among the indoor environment temperature, the correction value and the first accumulated time, or a trained neural network model, or other types of models, and the type of the first temperature calculation model is not specifically limited in the embodiment of the present application.

[0094] Specifically, regarding the specific process of obtaining the indoor environment target temperature from the indoor environment temperature, the correction value and the first accumulated time, it can be that the indoor environment target temperature is calculated by inputting the indoor environment temperature, the correction value and the first accumulated time into the calculation formula, or the indoor environment target temperature is determined by table lookup according to the indoor environment temperature, the correction value and the first accumulated time, or the indoor environment target temperature is calculated by inputting the indoor environment temperature, the correction value and the first accumulated time into the trained neural network model, or the indoor environment target temperature is obtained by other ways, and the determination manner of the indoor environment target temperature is not specifically limited in the embodiment of the present application.

[0095] It is worth noting that in the first temperature calculation model described above, the fifth input variable is divided by the first time constant, the fourth input variable is multiplied by the ratio of the fifth input variable divided by the first time constant, and the third input variable is subtracted from the product of the fourth input variable and the ratio. Specifically, the first embodiment of the present application can calculate the first ratio of the first cumulative time and the first time constant, and calculate the third product of the correction value and the first ratio. The indoor environment temperature is reduced by the third product value to obtain the indoor environment correction temperature.

[0096] In addition, as Figure 6 indicated, Figure 6 is a flowchart of a temperature correction method of an air conditioning system room temperature sensor provided by another embodiment of the present application. The temperature correction method of the embodiment of the present application can further include, but is not limited to, steps S610 and S620.

[0097] Step S610, when the target indoor unit is switched from meeting the correction condition to not meeting the correction condition, obtaining a second cumulative time of the target indoor unit under the condition of not meeting the correction condition;

[0098] Step S620, correcting the indoor environment temperature by using the correction value and the second cumulative time to obtain an indoor environment target temperature.

[0099] In an embodiment, during a period when the target indoor unit is out of the correction condition, the embodiment of the present application can also correct the correction value based on the second cumulative time of the target indoor unit out of the correction condition, and finally correct the indoor environment temperature by using the corrected correction value to obtain the final indoor environment target temperature.

[0100] In addition, as Figure 7 indicated, Figure 7 is a flowchart of a temperature correction method of an air conditioning system room temperature sensor provided by another embodiment of the present application. Regarding the correction of the indoor environment temperature by using the correction value and the second cumulative time in step S620 to obtain the indoor environment target temperature, it can include, but is not limited to, steps S710 and S720.

[0101] Step S710, inputting the indoor environment temperature, the correction value and the second cumulative time into a second temperature calculation model; wherein the second temperature calculation model includes a sixth input variable, a seventh input variable, an eighth input variable and a second time constant, the sixth input variable is used to be assigned as the indoor environment temperature, the seventh input variable is used to be assigned as the correction value, and the eighth input variable is used to be assigned as the second cumulative time;

[0102] Step S720, obtaining the indoor environment target temperature by the second temperature calculation model.

[0103] In one embodiment, after obtaining the indoor ambient temperature, correction value, and second cumulative time, the present application embodiment can directly input the indoor ambient temperature, correction value, and second cumulative time into the second temperature calculation model. Then, after analysis and processing, the second temperature calculation model will output the final indoor ambient target temperature.

[0104] It should be noted that the second temperature calculation model mentioned above can be a calculation model that includes a calculation formula, a mapping model that includes the mapping relationship between indoor ambient temperature, correction value, and second cumulative time, a trained neural network model, or other types of models. This application embodiment does not specifically limit the type of the second temperature calculation model.

[0105] Specifically, the process of obtaining the target indoor temperature from the indoor ambient temperature, correction value, and second cumulative time can be as follows: the target indoor temperature can be calculated by inputting the indoor ambient temperature, correction value, and second cumulative time into a calculation formula; the target indoor temperature can be determined by looking up a table based on the indoor ambient temperature, correction value, and second cumulative time; the target indoor temperature can be calculated by inputting the indoor ambient temperature, correction value, and second cumulative time into a trained neural network model; or the target indoor temperature can be obtained through other means. This application does not specifically limit the method of determining the target indoor temperature.

[0106] It is worth noting that in the second temperature calculation model described above, the eighth input variable is divided by the second time constant, the value 1 is subtracted from the ratio obtained by dividing the eighth input variable by the second time constant, the seventh input variable is multiplied by the difference obtained by subtracting the ratio from the value 1, and the sixth input variable is subtracted from the product value.

[0107] Specifically, in this embodiment of the application, a second ratio of the second cumulative time and the second time constant can be calculated, and a first difference between the value 1 and the second ratio can be calculated. Then, a fourth product of the correction value and the first difference can be calculated, and the indoor ambient temperature can be subtracted from the fourth product value to obtain the indoor ambient temperature correction.

[0108] Based on the temperature correction method for the room temperature sensor of the air conditioning system described in the above embodiments, the following are overall embodiments of the temperature correction method for the room temperature sensor of the air conditioning system of this application.

[0109] like Figure 8 As shown, Figure 8 This is an overall flowchart of a temperature correction method for an air conditioning system room temperature sensor provided in one embodiment of this application, including but not limited to steps S810 to S860.

[0110] Step S810: Power on the air conditioning system;

[0111] Step S820, judge whether the outdoor unit is in heating operation state, if not, the room temperature T is the actual detected temperature T1 of the sensor, if yes, execute step S830;

[0112] Step S830, each indoor unit is processed individually, judge whether the indoor unit enters the heating operation state, if yes, the room temperature T is the actual detected temperature T1 of the sensor, if not, execute step S840;

[0113] Step S840, judge whether the indoor unit fan is running, if yes, the room temperature T is the actual detected temperature T1 of the sensor, if not, execute step S850;

[0114] Step S850, the room temperature T is corrected to the actual detected temperature T1 of the sensor minus the correction value A* time coefficient k1; when the correction entry condition is not met, execute step S860;

[0115] Step S860, the room temperature T is corrected to the actual detected temperature T1 of the sensor minus the correction value A*(1-time coefficient k2).

[0116] Specifically, the overall flow of the embodiment of the application can include the following:

[0117] Step one, judge whether the indoor environment temperature T1 needs to be corrected:

[0118] 1, after the multi-split air conditioner system is powered on, it is always judged whether the outdoor unit is in heating operation state; wherein the outdoor unit is in heating operation state refers to that the compressor of the outdoor unit is running, and the four-way valve is switched to heating flow direction.

[0119] If the outdoor unit is in cooling operation, shutdown, heating standby and other non-heating operation states, the indoor environment temperature T1 does not need to be corrected.

[0120] If the outdoor unit is in heating operation state, the next step is entered.

[0121] 2, after the first condition that T1 needs to be corrected is met, each indoor unit connected by the multi-split outdoor unit is always judged whether it enters the heating operation state; wherein the indoor unit enters the heating operation state refers to that the fan of the indoor unit is running, and the throttling device has refrigerant passing through.

[0122] If the indoor unit enters the heating operation state, the indoor environment temperature T1 does not need to be corrected.

[0123] If the indoor unit does not enter the heating operation state, the next step is entered.

[0124] 3. After the second condition of T1 needing to be corrected is met, each indoor unit connected to the outdoor unit of the multi-unit system determines whether the corresponding fan is running.

[0125] If the fan of the indoor unit is running, the corresponding indoor environment temperature T1 does not need to be corrected.

[0126] If the fan of the indoor unit is not running, the T1 temperature is corrected.

[0127] Step 2. Obtain the correction value A according to the indoor environment temperature T1 and the indoor unit heat exchanger pipe temperature T2.

[0128] For the indoor unit that meets the three conditions of T1 needing to be corrected, the correction value A is calculated according to the T1 and T2 temperatures collected by the indoor unit, A = xT1 + yT2 + z, where x, y, and z are parameter values set according to different indoor unit models, and the ranges are as follows: x < 0, y > 0, 0 < z ≤ 15, and the correction value A changes with T1 and T2.

[0129] Step 3. The indoor environment temperature is corrected to T.

[0130] After obtaining the correction value A from the T1 and T2 temperatures, the indoor environment temperature correction value T is calculated, T = T1 - A * k1, k1 = n1 / N1, and k1 ≤ 1, T1 is the T1 temperature collected by the indoor unit room temperature sensor; n1 is the time that starts to accumulate when the three conditions of T1 needing to be corrected are met, in minutes; N1 is a time constant, generally set to 10 minutes; after the indoor environment temperature correction value T is calculated, the air conditioning system is controlled based on T, not T1.

[0131] Step 4. Action when the indoor environment temperature T1 changes from needing to be corrected to not needing to be corrected.

[0132] When the indoor environment temperature T1 changes from meeting the correction condition to not meeting the correction condition, T = T1 - A * (1 - k2), k2 = n2 / N2, and k2 ≤ 1, n2 is the time that starts to accumulate when the indoor environment temperature T1 changes from meeting the correction condition to not meeting the correction condition, in minutes; N2 is a time constant, generally set to 2 minutes; after N2 minutes of accumulation from meeting the correction condition to not meeting the correction condition, the air conditioning system resumes control based on T1.

[0133] According to the technical scheme of the embodiment of the present application, when the heating part of the multi-connected system is started, the technical scheme of the embodiment of the present application can reduce the influence of the heat generated by the indoor unit in the shutdown or standby state on the detection of the room temperature, so that the air conditioning system can obtain an accurate ambient temperature and work normally according to the temperature. In addition, the influence of the heat of the indoor unit in the shutdown or standby state on the room temperature sensor changes with time, and the time coefficient of the technical scheme of the embodiment of the present application can make the correction value more in line with the actual situation.

[0134] Based on the temperature correction method of the room temperature sensor of the air conditioning system of each of the above embodiments, the control method of the air conditioning system of the present application is proposed below.

[0135] As shown in Figure 9 , Figure 9 is a flowchart of the control method of the air conditioning system provided by an embodiment of the present application, including but not limited to steps S910, S920 and S930.

[0136] Step S910, obtaining the indoor set temperature;

[0137] Step S920, obtaining the indoor environment target temperature by using the temperature correction method;

[0138] Step S930, starting the target indoor unit to heat according to the indoor set temperature and the indoor environment target temperature.

[0139] In an embodiment, the embodiment of the present application can compare the indoor set temperature and the indoor environment target temperature to obtain a comparison result, and then start the target indoor unit to heat based on the comparison result. Specifically, if the indoor environment target temperature is lower than the indoor set temperature, the embodiment of the present application will start the corresponding target indoor unit to heat.

[0140] It should be noted that since the control method of the air conditioning system of the embodiment of the present application is based on the indoor environment target temperature obtained by the temperature correction method of the room temperature sensor of the air conditioning system of any of the above embodiments, the specific implementation and technical effects of the control method of the air conditioning system of the embodiment of the present application can refer to the specific implementation and technical effects of the temperature correction method of the room temperature sensor of the air conditioning system of any of the above embodiments.

[0141] Based on the temperature correction method of the room temperature sensor of the air conditioning system of each of the above embodiments and the control method of the air conditioning system, the embodiments of the controller, the air conditioning system and the computer readable storage medium of the present application are proposed below.

[0142] As shown in Figure 10 , Figure 10is a structural schematic diagram of a controller for executing the temperature correction method or the control method provided in an embodiment of the present application. The controller 200 implemented in the present application includes a processor 210, a memory 220, and a computer program stored in the memory 220 and executable on the processor 210, wherein, Figure 10 In the present application, one processor 210 and one memory 220 are taken as an example.

[0143] The processor 210 and the memory 220 can be connected through a bus or other means, Figure 10 In the present application, a connection through a bus is taken as an example.

[0144] The memory 220, as a non-transitory computer readable storage medium, can be used to store non-transitory software programs and non-transitory computer executable programs. In addition, the memory 220 can include a high-speed random access memory, and can also include a non-transitory memory, such as at least one magnetic disk storage device, a flash memory device, or other non-transitory solid-state memory device. In some embodiments, the memory 220 can optionally include a memory 220 remotely arranged relative to the processor 210, and these remote memories 220 can be connected to the controller 200 through a network. Examples of the above-mentioned network include but are not limited to the Internet, an intranet, a local area network, a mobile communication network, and a combination thereof.

[0145] Those skilled in the art can understand that, Figure 10 The device structure shown in the present application does not constitute a limitation on the controller 200, and can include more or fewer components than those shown, or combine certain components, or different component arrangements.

[0146] In Figure 10 In the controller 200 shown, the processor 210 can be used to call the temperature correction program or the control program stored in the memory 220, so as to realize the above-mentioned temperature correction method of the air conditioning system room temperature sensor or the control method of the air conditioning system. Specifically, the non-transitory software program and instructions required for realizing the above-mentioned temperature correction method of the air conditioning system room temperature sensor are stored in the memory 220, and when executed by the processor 210, the above-mentioned temperature correction method of the air conditioning system room temperature sensor is executed. Alternatively, the non-transitory software program and instructions required for realizing the above-mentioned control method of the air conditioning system are stored in the memory 220, and when executed by the processor 210, the above-mentioned control method of the air conditioning system is executed.

[0147] According to the technical scheme of the controller provided in the embodiment of the present application, for a multi-split type air conditioning system, in the case that some indoor units generate heat, the indoor environment target temperature can be obtained by correcting the indoor environment temperature according to the indoor environment temperature and the indoor unit heat exchanger coil temperature, so as to reduce the influence of the heat generated by the indoor unit in the shutdown state or standby state on the room temperature detection, make the air conditioning system obtain the accurate indoor environment target temperature and work normally according to the indoor environment target temperature, and thus improve the control accuracy of the air conditioning system.

[0148] It is worth noting that, since the controller 200 provided in the embodiment of the present application can execute the temperature correction method of the air conditioning system room temperature sensor or the control method of the air conditioning system according to any of the above embodiments, the specific implementation and technical effects of the controller 200 provided in the embodiment of the present application can refer to the specific implementation and technical effects of the temperature correction method of the air conditioning system room temperature sensor or the control method of the air conditioning system according to any of the above embodiments.

[0149] In addition, one embodiment of the present application further provides an air conditioning system comprising the controller according to any of the above embodiments, wherein the controller executes the temperature correction method of the air conditioning system room temperature sensor or the control method of the air conditioning system according to any of the above embodiments when the computer program is executed.

[0150] According to the technical scheme of the air conditioning system provided in the embodiment of the present application, for a multi-split type air conditioning system, in the case that some indoor units generate heat, the indoor environment target temperature can be obtained by correcting the indoor environment temperature according to the indoor environment temperature and the indoor unit heat exchanger coil temperature, so as to reduce the influence of the heat generated by the indoor unit in the shutdown state or standby state on the room temperature detection, make the air conditioning system obtain the accurate indoor environment target temperature and work normally according to the indoor environment target temperature, and thus improve the control accuracy of the air conditioning system.

[0151] It is worth noting that, since the air conditioning system provided in the embodiment of the present application comprises the controller according to any of the above embodiments, and the controller according to any of the above embodiments can execute the temperature correction method of the air conditioning system room temperature sensor or the control method of the air conditioning system, the specific implementation and technical effects of the air conditioning system provided in the embodiment of the present application can refer to the specific implementation and technical effects of the temperature correction method of the air conditioning system room temperature sensor or the control method of the air conditioning system according to any of the above embodiments.

[0152] In addition, one embodiment of the present application further provides a computer readable storage medium storing computer executable instructions for executing the temperature correction method of the air conditioning system room temperature sensor or the control method of the air conditioning system described above. Exemplarily, the computer readable storage medium stores computer executable instructions for executing the temperature correction method of the air conditioning system room temperature sensor or the control method of the air conditioning system described above. Figures 2 to 9the method steps in the method.

[0153] It is worth noting that since the computer readable storage medium of the embodiment of the present application can execute the temperature correction method of the room temperature sensor of the air conditioning system or the control method of the air conditioning system of any of the above embodiments, the specific implementation and technical effects of the computer readable storage medium of the embodiment of the present application can refer to the specific implementation and technical effects of the temperature correction method of the room temperature sensor of the air conditioning system or the control method of the air conditioning system of any of the above embodiments.

[0154] Those of ordinary skill in the art will understand that all or some of the steps in the above disclosed method can be implemented as software, firmware, hardware, and appropriate combinations thereof. Some or all of the physical components can be implemented as software executed by a processor, such as a central processing unit, a digital signal processor, or a microprocessor, or as hardware, or as an integrated circuit, such as an application specific integrated circuit. Such software can be distributed on computer readable media, which can include computer storage media (or non-transitory media) and communication media (or transitory media). As is well known to those of ordinary skill in the art, the term computer storage media includes volatile and non-volatile, removable and non-removable media implemented in any method or technology for storage of information such as computer readable instructions, data structures, program modules or other data. Computer storage media includes, but is not limited to, RAM, ROM, EEPROM, flash memory or other memory technology, CD-ROM, digital versatile disks (DVD) or other optical disk storage, magnetic cassettes, magnetic tapes, magnetic disk storage or other magnetic storage devices, or any other medium which can be used to store the desired information and which can be accessed by a computer. Furthermore, it is common technical knowledge to those of ordinary skill in the art that communication media typically includes computer readable instructions, data structures, program modules or other data in modulated data signals such as carrier waves or other transport mechanisms, and can include any information delivery media.

[0155] The above is a specific description of the preferred embodiments of the present application, but the present application is not limited to the above embodiments, and those skilled in the art can make various equivalent modifications or replacements without departing from the spirit of the present application, and these equivalent modifications or replacements are all included in the scope defined by the claims of the present application.

Claims

1. A temperature correction method for a room temperature sensor of an air conditioning system, characterized by, The air conditioning system is provided with an outdoor unit and multiple indoor units, and each return air inlet of the indoor units is provided with a room temperature sensor for detecting the indoor environment temperature; the temperature correction method comprises: obtaining the operating state of the outdoor unit and the indoor units; in the case that the outdoor unit is in a heating operation state, determining a target indoor unit in all the indoor units, wherein the target indoor unit is in a non-heating operation state, and the fan of the target indoor unit stops running; determining a correction value according to the indoor environment temperature corresponding to the target indoor unit and the indoor unit heat exchanger coil temperature; correcting the indoor environment temperature by using the correction value to obtain an indoor environment target temperature; the correction value and the first cumulative time are used to correct the indoor environment temperature to obtain an indoor environment target temperature; the temperature correction method further comprises: when the target indoor unit is switched from satisfying the correction condition to not satisfying the correction condition, obtaining a second cumulative time of the target indoor unit under the condition that the correction condition is not satisfied; the correction value and the second cumulative time are used to correct the indoor environment temperature to obtain an indoor environment target temperature. the correction value is determined according to the indoor environment temperature corresponding to the target indoor unit and the indoor unit heat exchanger coil temperature, comprising:

2. The temperature correction method according to claim 1, characterized by, inputting the indoor environment temperature and the indoor unit heat exchanger coil temperature into a correction value calculation model to obtain a correction value; wherein the correction value calculation model comprises a first input variable, a second input variable, a first correction coefficient of the indoor environment temperature, a second correction coefficient of the indoor unit heat exchanger coil temperature and an overall correction coefficient, the first input variable is used to be assigned to the indoor environment temperature, and the second input variable is used to be assigned to the indoor unit heat exchanger coil temperature. the correction value and the first cumulative time are used to correct the indoor environment temperature to obtain an indoor environment target temperature, comprising:

3. The temperature correction method according to claim 1, characterized by, inputting the indoor environment temperature, the correction value and the first cumulative time into a first temperature calculation model to obtain an indoor environment target temperature; wherein the first temperature calculation model comprises a third input variable, a fourth input variable, a fifth input variable and a first time constant, the third input variable is used to be assigned to the indoor environment temperature, the fourth input variable is used to be assigned to the correction value, and the fifth input variable is used to be assigned to the first cumulative time. the correction value and the second cumulative time are used to correct the indoor environment temperature to obtain an indoor environment target temperature, comprising:

4. The temperature correction method according to claim 1, characterized by, inputting the indoor environment temperature, the correction value and the second cumulative time into a second temperature calculation model to obtain an indoor environment target temperature; ​ The second temperature calculation model comprises a sixth input variable, a seventh input variable, an eighth input variable and a second time constant, the sixth input variable is assigned to the indoor environment temperature, the seventh input variable is assigned to the correction value, and the eighth input variable is assigned to the second cumulative time.

5. The temperature correction method according to any one of claims 1 to 4, characterized in that, For the outdoor unit in the heating operation state, the compressor of the outdoor unit is in the operation state, and the four-way valve of the indoor unit is switched to the heating flow direction.

6. The temperature correction method according to any one of claims 1 to 4, characterized by, For the indoor unit in the heating operation state, the fan of the indoor unit is in the operation state, and the refrigerant flows through the throttling device of the indoor unit.

7. A control method of an air conditioning system, characterized by, The control method comprises: obtaining an indoor set temperature; obtaining an indoor environment target temperature by using the temperature correction method according to any one of claims 1 to 6; starting the target indoor unit to heat according to the indoor set temperature and the indoor environment target temperature.

8. An air conditioning system, characterized by, comprise: a memory, a processor, and a computer program stored in the memory and executable on the processor, and the processor executes the computer program to execute the temperature correction method according to any one of claims 1 to 6 and / or the control method of the air conditioning system according to claim 7.

9. A computer-readable storage medium, characterized in that: computer executable instructions for executing the temperature correction method according to any one of claims 1 to 6 and / or the control method of the air conditioning system according to claim 7.

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