Automatic detection method and device for temperature sensor of indoor unit

Abstract

The application provides an automatic detection method and device for an indoor unit temperature sensor, and the method comprises the following steps: in the case of receiving an indoor unit starting instruction, the indoor unit is controlled to enter an automatic detection mode, and an electronic expansion valve of the indoor unit is adjusted to a preset opening degree; after the indoor unit runs for a preset time while keeping the preset opening degree, detection temperatures of two temperature sensors are acquired respectively; a temperature difference of the two temperature sensors is calculated according to the detection temperatures, and if the temperature difference is greater than a preset temperature difference, a temperature sensor with a higher detection temperature is determined as an outlet temperature sensor, and a temperature sensor with a lower detection temperature is determined as an inlet temperature sensor. Through the automatic detection method for the indoor unit temperature sensor provided by the application, the inlet and outlet positions of the temperature sensor can be determined without distinguishing the appearance design of the temperature sensor, the identification accuracy is improved, and the consumption of manpower and material resources is reduced.

Description

Technical Field

[0001] This invention relates to the field of air conditioning technology, and in particular to an automatic detection method and device for an indoor unit temperature sensor. Background Technology

[0002] When an air conditioner's indoor unit is running, the flow of refrigerant into the heat exchanger is typically controlled by the opening of the indoor unit's expansion valve. The opening of this expansion valve is controlled by the superheat at the inlet and outlet of the heat exchanger. Therefore, two temperature sensors are required at the inlet and outlet of the heat exchanger to detect temperature values. If the temperature sensors are inserted in reverse, it will cause an error in superheat identification, leading to incorrect adjustment of the expansion valve opening and affecting the heat exchange efficiency of the indoor unit. Therefore, it is essential to avoid reverse insertion of the two temperature sensors.

[0003] In existing technologies, methods to prevent reverse insertion of temperature sensors at the inlet and outlet of the indoor unit heat exchanger mainly involve foolproof design of the temperature sensors, differentiating their size and color, and finally identifying them through factory testing. This method consumes a lot of manpower and resources and cannot completely prevent the reverse insertion of temperature sensors.

[0004] The technical problem that needs to be solved is to automatically detect and distinguish the inlet and outlet positions of temperature sensors in the indoor unit of the air conditioner to avoid reverse insertion. Summary of the Invention

[0005] This invention provides an automatic detection method and device for indoor unit temperature sensors, which enables the automatic detection of the indoor unit of the air conditioner to distinguish the inlet and outlet positions of the temperature sensor, thus avoiding reverse insertion.

[0006] This invention provides an automatic detection method for an indoor unit temperature sensor, comprising:

[0007] Upon receiving a start command from the indoor unit, the system controls the indoor unit to enter an automatic detection mode and adjusts the electronic expansion valve of the indoor unit to a preset opening.

[0008] After the indoor unit maintains the preset opening degree for a preset time, the detected temperatures of the two temperature sensors are obtained respectively;

[0009] The temperature difference between the two temperature sensors is calculated based on the detected temperature. If the temperature difference is greater than a preset temperature difference, the temperature sensor with the higher detected temperature is determined to be the outlet temperature sensor, and the temperature sensor with the lower detected temperature is determined to be the inlet temperature sensor.

[0010] According to the present invention, an automatic detection method for an indoor unit temperature sensor is provided, wherein the automatic detection mode includes a cooling detection mode;

[0011] Adjusting the electronic expansion valve of the indoor unit to a preset opening includes:

[0012] In cooling detection mode, adjust the electronic expansion valve to the basic opening.

[0013] According to an automatic detection method for an indoor unit temperature sensor provided by the present invention, in a cooling detection mode, after calculating the temperature difference between the two temperature sensors based on the detected temperature, the method further includes:

[0014] If the temperature difference is less than or equal to the preset temperature difference, the electronic expansion valve of the indoor unit is adjusted to reduce the preset opening value or the preset opening ratio from the basic opening.

[0015] After the indoor unit has been running for a preset time, the detected temperatures of the two temperature sensors in the cooling detection mode are obtained, and the cooling temperature difference between the two temperature sensors is calculated based on the detected temperatures in the cooling detection mode.

[0016] Repeat the above steps until the temperature difference in cooling mode is greater than the preset temperature difference. Then, determine the temperature sensor with the higher detection temperature in the cooling detection mode as the outlet temperature sensor and the temperature sensor with the lower detection temperature in the cooling detection mode as the inlet temperature sensor.

[0017] According to the present invention, an automatic detection method for an indoor unit temperature sensor is provided, wherein the automatic detection mode further includes a heating detection mode;

[0018] Adjusting the electronic expansion valve of the indoor unit to a preset opening includes:

[0019] In heating detection mode, adjust the electronic expansion valve to its maximum opening.

[0020] According to an automatic detection method for an indoor unit temperature sensor provided by the present invention, in heating detection mode, after calculating the temperature difference between the two temperature sensors based on the detected temperature, the method further includes:

[0021] If the temperature difference is less than or equal to the preset temperature difference, then adjust the outdoor unit compressor to increase the preset frequency value;

[0022] After the indoor unit has been running for a preset time, the detected temperatures of the two temperature sensors in the heating detection mode are obtained, and the heating temperature difference between the two temperature sensors is calculated based on the detected temperatures in the heating detection mode.

[0023] Repeat the above steps until the heating temperature difference is greater than the preset temperature difference. Then, determine the temperature sensor with the higher detection temperature in the heating detection mode as the outlet temperature sensor, and determine the temperature sensor with the lower detection temperature in the heating detection mode as the inlet temperature sensor.

[0024] According to the automatic detection method for an indoor unit temperature sensor provided by the present invention, after determining that the temperature sensor with the higher detection temperature is the outlet temperature sensor and the temperature sensor with the lower detection temperature is the inlet temperature sensor, the method further includes:

[0025] Control the indoor unit to exit the automatic detection mode and obtain the outdoor unit's ambient temperature;

[0026] After the outdoor unit ambient temperature reaches the preset temperature range, the outlet temperature of the outlet temperature sensor and the inlet temperature of the inlet temperature sensor are obtained.

[0027] The opening degree of the electronic expansion valve is adjusted according to the outlet temperature and the inlet temperature, and the operation of the indoor unit is controlled based on the opening degree.

[0028] The present invention also provides an automatic detection device for an indoor unit temperature sensor, comprising:

[0029] The control module is used to control the indoor unit to enter the automatic detection mode and adjust the electronic expansion valve of the indoor unit to a preset opening degree when the indoor unit starts up command is received.

[0030] The acquisition module is used to acquire the detected temperatures of the two temperature sensors respectively after the indoor unit maintains the preset opening degree for a preset time;

[0031] The determination module is used to calculate the temperature difference between the two temperature sensors based on the detected temperature. If the temperature difference is greater than a preset temperature difference, the temperature sensor with the higher detected temperature is determined to be the outlet temperature sensor, and the temperature sensor with the lower detected temperature is determined to be the inlet temperature sensor.

[0032] The present invention also provides an electronic device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the program to implement an automatic detection method for an indoor unit temperature sensor as described above.

[0033] The present invention also provides a non-transitory computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the automatic detection method for the indoor unit temperature sensor as described above.

[0034] The present invention also provides a computer program product, including a computer program that, when executed by a processor, implements an automatic detection method for an indoor unit temperature sensor as described above.

[0035] This invention provides an automatic detection method and apparatus for indoor unit temperature sensors. Upon receiving an indoor unit start command, the method controls the indoor unit to enter an automatic detection mode and adjusts the electronic expansion valve to a preset opening. After the indoor unit maintains the preset opening for a preset time, the detected temperatures of two temperature sensors are acquired. The temperature difference between the two sensors is calculated based on the detected temperatures. If the temperature difference is greater than a preset temperature difference, the sensor with the higher detected temperature is identified as the outlet temperature sensor, and the sensor with the lower detected temperature is identified as the inlet temperature sensor. Through the automatic detection mode of the indoor unit, the inlet and outlet positions of the temperature sensors can be determined without distinguishing their external design, improving identification accuracy and reducing the consumption of manpower and resources. Attached Figure Description

[0036] To more clearly illustrate the technical solutions in this invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0037] Figure 1 This is one of the flowcharts illustrating the automatic detection method for the indoor unit temperature sensor provided by the present invention;

[0038] Figure 2 This is the second flowchart illustrating the automatic detection method for the indoor unit temperature sensor provided by the present invention;

[0039] Figure 3 This is the third flowchart illustrating the automatic detection method for the indoor unit temperature sensor provided by the present invention;

[0040] Figure 4 This is the fourth flowchart illustrating the automatic detection method for the indoor unit temperature sensor provided by the present invention;

[0041] Figure 5 This is a complete flowchart of the automatic detection method for the indoor unit temperature sensor provided by the present invention;

[0042] Figure 6 This is a schematic diagram of the structure of the automatic detection device for the indoor unit temperature sensor provided by the present invention;

[0043] Figure 7 This is a schematic diagram of the structure of the electronic device provided by the present invention. Detailed Implementation

[0044] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0045] The following is combined with Figures 1-7 This invention describes an automatic detection method and apparatus for an indoor unit temperature sensor.

[0046] Figure 1 This is one of the flowcharts illustrating the automatic detection method for the indoor unit temperature sensor provided in this embodiment, such as... Figure 1 As shown, the automatic detection method for the indoor unit temperature sensor provided in this embodiment includes:

[0047] Step 100: Upon receiving the indoor unit start command, control the indoor unit to enter the automatic detection mode and adjust the electronic expansion valve of the indoor unit to the preset opening degree.

[0048] It's important to note that during operation, the refrigerant flow into the indoor unit's heat exchanger is typically controlled by the opening of the indoor unit's expansion valve. This expansion valve's opening is determined by the superheat at the inlet and outlet of the heat exchanger. Therefore, two temperature sensors are required at the inlet and outlet of the heat exchanger to detect temperature values. If the temperature sensors are inserted in reverse, it will cause incorrect superheat identification, leading to incorrect adjustment of the expansion valve's opening and affecting the heat exchange efficiency of the indoor unit. Therefore, it is crucial to avoid reverse insertion of the two temperature sensors.

[0049] In existing technologies, methods to prevent reverse insertion of temperature sensors at the inlet and outlet of the indoor unit heat exchanger mainly involve foolproof design of the temperature sensors, differentiating their size and color, and finally identifying them through factory testing. This method consumes a lot of manpower and resources and cannot completely prevent the reverse insertion of temperature sensors.

[0050] Based on this, upon receiving the indoor unit start command, this embodiment first controls the indoor unit to enter an automatic detection mode. Specifically, the automatic detection mode can include a cooling detection mode and a heating detection mode. The user's needs can be parsed from the indoor unit start command; for example, if cooling is required, the indoor unit is controlled to enter the cooling detection mode; if heating is required, the indoor unit is controlled to enter the heating detection mode. The initial opening degree of the indoor unit's electronic expansion valve is determined based on the specific detection mode, facilitating subsequent adjustment of the opening degree according to the initial opening degree.

[0051] Step 200: After the indoor unit maintains the preset opening degree for a preset time, the detected temperatures of the two temperature sensors are obtained respectively.

[0052] Specifically, the indoor unit is controlled to maintain a preset opening degree for a preset time, and then the current detected temperature of the two temperature sensors is obtained.

[0053] It should be noted that the two temperature sensors can be temperature sensors that are exactly the same size and color, or temperature sensors that are different in size and color. The specific inlet and outlet temperature sensors can be determined through the automatic detection mode.

[0054] For example, in cooling detection mode, the indoor unit can be controlled to maintain a basic operating degree for 5 minutes to ensure more accurate temperature readings from the temperature sensor. The preset time can be specifically set according to the air conditioner's performance; this embodiment does not impose any particular limitations on this.

[0055] Step 300: Calculate the temperature difference between the two temperature sensors based on the detected temperature. If the temperature difference is greater than a preset temperature difference, then determine that the temperature sensor with the higher detected temperature is the outlet temperature sensor, and determine that the temperature sensor with the lower detected temperature is the inlet temperature sensor.

[0056] Specifically, after the indoor unit maintains a preset opening degree for a preset time, the current detected temperatures of the two temperature sensors are obtained, and the temperature difference between the two temperature sensors is calculated. If the temperature difference is greater than a preset temperature difference value, for example, a preset temperature difference value of 3℃, then the temperature sensor with the higher detected temperature is determined to be the outlet temperature sensor, and the temperature sensor with the lower detected temperature is determined to be the inlet temperature sensor.

[0057] The above describes the steps of the automatic detection method for the indoor unit temperature sensor provided by this invention. As can be seen from the above description, the automatic detection method for the indoor unit temperature sensor provided by this invention, upon receiving an indoor unit start command, controls the indoor unit to enter an automatic detection mode and adjusts the electronic expansion valve of the indoor unit to a preset opening. After the indoor unit maintains the preset opening and operates for a preset time, the detected temperatures of the two temperature sensors are acquired respectively. The temperature difference between the two temperature sensors is calculated based on the detected temperatures. If the temperature difference is greater than a preset temperature difference, the temperature sensor with the higher detected temperature is determined to be the outlet temperature sensor, and the temperature sensor with the lower detected temperature is determined to be the inlet temperature sensor. Through the automatic detection mode of the indoor unit, the inlet and outlet positions of the temperature sensors can be determined without distinguishing their appearance design, improving identification accuracy and reducing the consumption of manpower and resources.

[0058] Based on the above embodiments, in this embodiment, the automatic detection mode includes a cooling detection mode;

[0059] Step 100 involves adjusting the electronic expansion valve of the indoor unit to a preset opening degree, including:

[0060] In cooling detection mode, adjust the electronic expansion valve to the basic opening.

[0061] Specifically, as mentioned in the above embodiments, the automatic detection mode may include a cooling detection mode and a heating detection mode.

[0062] In the cooling detection mode, the preset opening degree of the electronic expansion valve can be the base opening degree, which makes it easy to adjust the opening degree according to the base opening degree later.

[0063] The automatic detection method for indoor unit temperature sensors provided in this embodiment controls the indoor unit to enter the cooling detection mode, adjusts the electronic expansion valve to the base opening, so that the indoor unit can obtain the detection temperature of the two temperature sensors, and determines whether to adjust the opening according to the base opening based on the temperature difference, thereby improving the accuracy of detection.

[0064] Based on the above embodiments, in this embodiment... Figure 2 This is the second flowchart illustrating the automatic detection method for the indoor unit temperature sensor provided in this embodiment, as shown below. Figure 2 As shown, in the cooling detection mode, after calculating the temperature difference between the two temperature sensors based on the detected temperature in step 300, the method further includes:

[0065] Step 210: If the temperature difference is less than or equal to the preset temperature difference, adjust the electronic expansion valve of the indoor unit from the base opening to reduce the preset opening value or reduce the preset opening ratio.

[0066] It should be noted that in the cooling detection mode, after calculating the temperature difference between the two temperature sensors based on the detected temperature, if the temperature difference is greater than the preset temperature difference, the temperature sensor with the higher detected temperature can be directly identified as the outlet temperature sensor, and the temperature sensor with the lower detected temperature can be identified as the inlet temperature sensor. If the temperature difference is less than or equal to the preset temperature difference, it means that the current detection result is not necessarily accurate. In order to improve the accuracy of the detection, the opening of the electronic expansion valve needs to be adjusted.

[0067] Step 220: After the indoor unit has been running for a preset time, obtain the detected temperatures of the two temperature sensors in the cooling detection mode, and calculate the cooling temperature difference between the two temperature sensors based on the detected temperatures in the cooling detection mode.

[0068] Specifically, in the cooling detection mode, the electronic expansion valve of the indoor unit is reduced from its basic opening to a preset opening or a preset opening percentage. After the electronic expansion valve opening is reduced, the refrigerant flow of the indoor unit will decrease, thereby increasing the superheat and ensuring that the refrigerant flow is fully evaporated in the heat exchanger. This increases the temperature difference between the two temperature sensors, making it easier to obtain the detection temperature again in the future.

[0069] After the indoor unit has been running for a preset time based on the adjusted opening degree, the current detected temperature of the two temperature sensors is obtained again, and the cooling temperature difference between the two temperature sensors is recalculated based on the current detected temperature.

[0070] Step 230: Repeat the above steps until the temperature difference of the cooling system is greater than the preset temperature difference. Then, determine the temperature sensor with the higher detection temperature in the cooling detection mode as the outlet temperature sensor and the temperature sensor with the lower detection temperature in the cooling detection mode as the inlet temperature sensor.

[0071] Specifically, if the cooling temperature difference is greater than the preset temperature difference, the temperature sensor with the higher detected temperature is identified as the outlet temperature sensor, and the temperature sensor with the lower detected temperature is identified as the inlet temperature sensor; if the cooling temperature difference is less than the preset temperature difference, the electronic expansion valve of the indoor unit is controlled to decrease from the basic opening to the preset opening or decrease the preset opening ratio until the calculated temperature difference is greater than the preset temperature difference.

[0072] It should be noted that if the electronic expansion valve has been reduced to its minimum opening, and the calculated temperature difference between the two temperature sensors is not greater than the preset temperature difference, it indicates that there is a fault in the current refrigeration detection mode. The control will issue an alarm to remind the user or staff to check.

[0073] The automatic detection method for indoor unit temperature sensors provided in this embodiment determines the specific inlet and outlet temperature sensors and improves detection accuracy by adjusting the opening of the electronic expansion valve in cooling detection mode so that the cooling temperature difference between the two temperature sensors is greater than a preset temperature difference.

[0074] Based on the above embodiments, in this embodiment, the automatic detection mode further includes a heating detection mode;

[0075] Step 100 involves adjusting the electronic expansion valve of the indoor unit to a preset opening degree, including:

[0076] In heating detection mode, adjust the electronic expansion valve to its maximum opening.

[0077] Specifically, as mentioned in the above embodiments, the automatic detection mode may include a cooling detection mode and a heating detection mode.

[0078] In heating detection mode, the preset opening degree of the electronic expansion valve can be the maximum opening degree.

[0079] The automatic detection method for indoor unit temperature sensors provided in this embodiment controls the indoor unit to enter the heating detection mode and adjusts the electronic expansion valve to its maximum opening so that the indoor unit can obtain the detection temperature from the two temperature sensors, thereby improving the accuracy of the detection.

[0080] Based on the above embodiments, in this embodiment... Figure 3 This is the third flowchart illustrating the automatic detection method for the indoor unit temperature sensor provided in this embodiment, as shown below. Figure 3 As shown, in the heating detection mode, after calculating the temperature difference between the two temperature sensors based on the detected temperature in step 300, the method further includes:

[0081] Step 310: If the temperature difference is less than or equal to the preset temperature difference, adjust the outdoor unit compressor to increase the preset frequency value.

[0082] It should be noted that in heating detection mode, after calculating the temperature difference between the two temperature sensors based on the detected temperature, if the temperature difference is greater than the preset temperature difference, the temperature sensor with the higher detected temperature can be directly identified as the outlet temperature sensor, and the temperature sensor with the lower detected temperature can be identified as the inlet temperature sensor. If the temperature difference is less than or equal to the preset temperature difference, it means that the current detection result is not necessarily accurate. To improve the accuracy of the detection, the frequency of the outdoor unit compressor needs to be adjusted.

[0083] Step 320: After the indoor unit has been running for a preset time, obtain the detected temperatures of the two temperature sensors in the heating detection mode, and calculate the heating temperature difference between the two temperature sensors based on the detected temperatures in the heating detection mode.

[0084] Specifically, in heating detection mode, the outdoor unit compressor is adjusted to increase the preset frequency value so as to increase the temperature difference between the two temperature sensors, making it easier to obtain the detection temperature again in the future.

[0085] After the outdoor unit compressor increases the preset frequency value, the indoor unit is controlled to run for a preset time, and the current detected temperature of the two temperature sensors is obtained again. The heating temperature difference between the two temperature sensors is then recalculated based on the current detected temperature.

[0086] Step 330: Repeat the above steps until the heating temperature difference is greater than the preset temperature difference. Then, determine the temperature sensor with the higher detection temperature in the heating detection mode as the outlet temperature sensor and the temperature sensor with the lower detection temperature in the heating detection mode as the inlet temperature sensor.

[0087] Specifically, if the heating temperature difference is greater than the preset temperature difference, the temperature sensor with the higher detected temperature is identified as the outlet temperature sensor, and the temperature sensor with the lower detected temperature is identified as the inlet temperature sensor; if the heating temperature difference is less than the preset temperature difference, the outdoor unit compressor is adjusted to increase the preset frequency value until the calculated temperature difference is greater than the preset temperature difference.

[0088] The automatic detection method for indoor unit temperature sensors provided in this embodiment adjusts the outdoor unit compressor to increase a preset frequency in heating detection mode so that the heating temperature difference between the two temperature sensors is greater than a preset temperature difference, thereby determining the specific inlet and outlet temperature sensors and improving detection accuracy.

[0089] Based on the above embodiments, in this embodiment... Figure 4 This is one of the flowcharts illustrating the automatic detection method for the indoor unit temperature sensor provided in this embodiment, such as... Figure 4 As shown, after determining in step 300 that the temperature sensor with the higher detection temperature is the outlet temperature sensor and the temperature sensor with the lower detection temperature is the inlet temperature sensor, the method further includes:

[0090] Step 410: Control the indoor unit to exit the automatic detection mode and obtain the outdoor unit's ambient temperature.

[0091] Step 420: After the outdoor unit ambient temperature reaches the preset temperature range, obtain the outlet temperature of the outlet temperature sensor and the inlet temperature of the inlet temperature sensor.

[0092] Step 430: Adjust the opening degree of the electronic expansion valve according to the outlet temperature and the inlet temperature, and control the operation of the indoor unit based on the opening degree.

[0093] Specifically, after identifying the specific inlet and outlet temperature sensors, the indoor unit is controlled to exit automatic detection mode. At this point, the indoor unit can be controlled to operate normally only after the outdoor unit's ambient temperature reaches the preset temperature range.

[0094] For example, the preset temperature range can be 20℃-40℃. When the outdoor unit ambient temperature is detected to be between 20℃ and 40℃, the outlet temperature of the indoor unit outlet temperature sensor and the inlet temperature of the inlet temperature sensor are obtained. Based on the outlet temperature and the inlet temperature, the opening of the electronic expansion valve is adjusted to control the normal operation of the indoor unit based on the current opening.

[0095] The automatic detection method for the indoor unit temperature sensor provided in this embodiment, after determining the specific inlet and outlet temperature sensors, adjusts the opening of the electronic expansion valve to control the normal operation of the indoor unit after the outdoor unit ambient temperature reaches the preset temperature range, making the control of the electronic expansion valve more accurate and improving the air conditioning operating efficiency.

[0096] The complete process of automatic detection of the indoor unit temperature sensor provided in the embodiments of the present invention is described below.

[0097] Figure 5 This is a complete flowchart of the automatic detection method for the indoor unit temperature sensor provided by the present invention, as shown below. Figure 5 As shown, the automatic detection method for the indoor unit temperature sensor provided by this invention includes the following specific steps:

[0098] 1. After receiving the indoor unit start command, it enters automatic detection mode.

[0099] 2. In cooling detection mode, adjust the electronic expansion valve to the basic opening and control the indoor unit to operate; if the operation is set for a preset time, obtain the detected temperatures of the two temperature sensors and calculate whether the temperature difference is greater than the preset temperature difference; if it is greater than the preset temperature difference, determine that the sensor with the higher detected temperature is the outlet temperature sensor and the sensor with the lower detected temperature is the inlet temperature sensor; if it is less than or equal to the preset temperature difference, adjust the electronic expansion valve from the basic opening to reduce the preset opening value or reduce the preset opening ratio until the calculated temperature difference is greater than the preset temperature difference.

[0100] 3. In heating detection mode, adjust the electronic expansion valve to its maximum opening to control the indoor unit's operation; if the preset running time is set, obtain the detected temperatures from the two temperature sensors and calculate whether the temperature difference is greater than the preset temperature difference; if it is greater than the preset temperature difference, determine that the sensor with the higher detected temperature is the outlet temperature sensor and the sensor with the lower detected temperature is the inlet temperature sensor; if it is less than or equal to the preset temperature difference, adjust the outdoor unit compressor to increase the preset frequency value until the calculated temperature difference is greater than the preset temperature difference.

[0101] 4. After determining that the sensor with the higher detected temperature is the outlet temperature sensor and the sensor with the lower detected temperature is the inlet temperature sensor, exit the automatic detection mode and obtain the outdoor unit ambient temperature. If the outdoor unit ambient temperature reaches the preset temperature range, obtain the outlet temperature and inlet temperature, and adjust the opening of the electronic expansion valve based on the outlet temperature and inlet temperature to control the operation of the indoor unit.

[0102] The automatic detection method for indoor unit temperature sensors provided in this invention involves controlling the indoor unit to enter an automatic detection mode upon receiving a start command, adjusting the electronic expansion valve of the indoor unit to a preset opening degree, and then acquiring the detected temperatures of two temperature sensors after the indoor unit maintains the preset opening degree for a preset time. The temperature difference between the two temperature sensors is calculated based on the detected temperatures. If the temperature difference is greater than a preset temperature difference value, the temperature sensor with the higher detected temperature is identified as the outlet temperature sensor, and the temperature sensor with the lower detected temperature is identified as the inlet temperature sensor. Through the automatic detection mode of the indoor unit, the inlet and outlet positions of the temperature sensors can be determined without distinguishing their external design, improving identification accuracy and reducing the consumption of manpower and resources.

[0103] The automatic detection device for the indoor unit temperature sensor provided by the present invention will be described below. The automatic detection device for the indoor unit temperature sensor described below and the automatic detection method for the indoor unit temperature sensor described above can be referred to in correspondence.

[0104] Figure 6 This is a schematic diagram of the automatic detection device for the indoor unit temperature sensor provided in this embodiment, as shown below. Figure 6 As shown, the automatic detection device for the indoor unit temperature sensor provided in this embodiment includes:

[0105] The control module 601 is used to control the indoor unit to enter the automatic detection mode and adjust the electronic expansion valve of the indoor unit to a preset opening degree when it receives the indoor unit start command;

[0106] The acquisition module 602 is used to acquire the detected temperatures of the two temperature sensors respectively after the indoor unit maintains the preset opening degree for a preset time;

[0107] The determination module 603 is used to calculate the temperature difference between the two temperature sensors based on the detected temperature. If the temperature difference is greater than a preset temperature difference, the temperature sensor with the higher detected temperature is determined to be the outlet temperature sensor, and the temperature sensor with the lower detected temperature is determined to be the inlet temperature sensor.

[0108] The automatic detection device for indoor unit temperature sensors provided in this embodiment controls the indoor unit to enter automatic detection mode upon receiving an indoor unit start command, adjusting the electronic expansion valve of the indoor unit to a preset opening degree. After the indoor unit maintains the preset opening degree for a preset time, it acquires the detected temperatures of the two temperature sensors respectively. Based on the detected temperatures, it calculates the temperature difference between the two temperature sensors. If the temperature difference is greater than a preset temperature difference value, the temperature sensor with the higher detected temperature is identified as the outlet temperature sensor, and the temperature sensor with the lower detected temperature is identified as the inlet temperature sensor. Through the automatic detection mode of the indoor unit, the inlet and outlet positions of the temperature sensors can be determined without distinguishing their external design, improving identification accuracy and reducing the consumption of manpower and resources.

[0109] Based on the above embodiments, in this embodiment, the automatic detection mode includes a cooling detection mode;

[0110] The control module 601 is specifically used for:

[0111] In cooling detection mode, adjust the electronic expansion valve to the basic opening.

[0112] Based on the above embodiments, in this embodiment, the device further includes an adjustment module, specifically used for:

[0113] In the cooling detection mode, after calculating the temperature difference between the two temperature sensors based on the detected temperature, if the temperature difference is less than or equal to a preset temperature difference, the electronic expansion valve of the indoor unit is adjusted from the base opening to a preset opening value or a preset opening ratio.

[0114] After the indoor unit has been running for a preset time, the detected temperatures of the two temperature sensors in the cooling detection mode are obtained, and the cooling temperature difference between the two temperature sensors is calculated based on the detected temperatures in the cooling detection mode.

[0115] Repeat the above steps until the temperature difference in cooling mode is greater than the preset temperature difference. Then, determine the temperature sensor with the higher detection temperature in the cooling detection mode as the outlet temperature sensor and the temperature sensor with the lower detection temperature in the cooling detection mode as the inlet temperature sensor.

[0116] Based on the above embodiments, in this embodiment, the automatic detection mode further includes a heating detection mode;

[0117] The control module 601 is specifically used for:

[0118] In heating detection mode, adjust the electronic expansion valve to its maximum opening.

[0119] Based on the above embodiments, in this embodiment, the adjustment module is specifically used for:

[0120] In heating detection mode, after calculating the temperature difference between the two temperature sensors based on the detected temperature, if the temperature difference is less than or equal to a preset temperature difference, the outdoor unit compressor is adjusted to increase the preset frequency value.

[0121] After the indoor unit has been running for a preset time, the detected temperatures of the two temperature sensors in the heating detection mode are obtained, and the heating temperature difference between the two temperature sensors is calculated based on the detected temperatures in the heating detection mode.

[0122] Repeat the above steps until the heating temperature difference is greater than the preset temperature difference. Then, determine the temperature sensor with the higher detection temperature in the heating detection mode as the outlet temperature sensor, and determine the temperature sensor with the lower detection temperature in the heating detection mode as the inlet temperature sensor.

[0123] Based on the above embodiments, in this embodiment, the control module 601 is specifically used for:

[0124] After determining that the temperature sensor with the higher detection temperature is the outlet temperature sensor and the temperature sensor with the lower detection temperature is the inlet temperature sensor, the indoor unit is controlled to exit the automatic detection mode and the outdoor unit's ambient temperature is obtained.

[0125] After the outdoor unit ambient temperature reaches the preset temperature range, the outlet temperature of the outlet temperature sensor and the inlet temperature of the inlet temperature sensor are obtained.

[0126] The opening degree of the electronic expansion valve is adjusted according to the outlet temperature and the inlet temperature, and the operation of the indoor unit is controlled based on the opening degree.

[0127] Figure 7 An example is a schematic diagram of the physical structure of an electronic device, such as... Figure 7 As shown, the electronic device may include: a processor 710, a communication interface 720, a memory 730, and a communication bus 740, wherein the processor 710, the communication interface 720, and the memory 730 communicate with each other via the communication bus 740. The processor 710 can call logical instructions in the memory 730 to execute an automatic detection method for the indoor unit temperature sensor, the method including:

[0128] Upon receiving a start command from the indoor unit, the system controls the indoor unit to enter an automatic detection mode and adjusts the electronic expansion valve of the indoor unit to a preset opening.

[0129] After the indoor unit maintains the preset opening degree for a preset time, the detected temperatures of the two temperature sensors are obtained respectively;

[0130] The temperature difference between the two temperature sensors is calculated based on the detected temperature. If the temperature difference is greater than a preset temperature difference, the temperature sensor with the higher detected temperature is determined to be the outlet temperature sensor, and the temperature sensor with the lower detected temperature is determined to be the inlet temperature sensor.

[0131] Furthermore, the logical instructions in the aforementioned memory 730 can be implemented as software functional units and, when sold or used as independent products, can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, essentially, or the part that contributes to the prior art, or a part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of the present invention. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0132] On the other hand, the present invention also provides a computer program product, the computer program product comprising a computer program that can be stored on a non-transitory computer-readable storage medium, wherein when the computer program is executed by a processor, the computer is able to execute the automatic detection method for the indoor unit temperature sensor provided by the above methods, the method comprising:

[0133] Upon receiving a start command from the indoor unit, the system controls the indoor unit to enter an automatic detection mode and adjusts the electronic expansion valve of the indoor unit to a preset opening.

[0134] After the indoor unit maintains the preset opening degree for a preset time, the detected temperatures of the two temperature sensors are obtained respectively;

[0135] The temperature difference between the two temperature sensors is calculated based on the detected temperature. If the temperature difference is greater than a preset temperature difference, the temperature sensor with the higher detected temperature is determined to be the outlet temperature sensor, and the temperature sensor with the lower detected temperature is determined to be the inlet temperature sensor.

[0136] In another aspect, the present invention also provides a non-transitory computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements an automatic detection method for an indoor unit temperature sensor provided by the methods described above, the method comprising:

[0137] Upon receiving a start command from the indoor unit, the system controls the indoor unit to enter an automatic detection mode and adjusts the electronic expansion valve of the indoor unit to a preset opening.

[0138] After the indoor unit maintains the preset opening degree for a preset time, the detected temperatures of the two temperature sensors are obtained respectively;

[0139] The temperature difference between the two temperature sensors is calculated based on the detected temperature. If the temperature difference is greater than a preset temperature difference, the temperature sensor with the higher detected temperature is determined to be the outlet temperature sensor, and the temperature sensor with the lower detected temperature is determined to be the inlet temperature sensor.

[0140] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs. Those skilled in the art can understand and implement this without any creative effort.

[0141] Through the above description of the embodiments, those skilled in the art can clearly understand that each embodiment can be implemented by means of software plus necessary general-purpose hardware platforms, and of course, it can also be implemented by hardware. Based on this understanding, the above technical solutions, in essence or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, magnetic disk, optical disk, etc., and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute the methods described in the various embodiments or some parts of the embodiments.

[0142] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An automatic detection method for an indoor unit temperature sensor, characterized in that, include: Upon receiving a start command from the indoor unit, the system controls the indoor unit to enter an automatic detection mode and adjusts the electronic expansion valve of the indoor unit to a preset opening. After the indoor unit maintains the preset opening degree for a preset time, the detected temperatures of the two temperature sensors are obtained respectively; The temperature difference between the two temperature sensors is calculated based on the detected temperature. If the temperature difference is greater than a preset temperature difference, the temperature sensor with the higher detected temperature is determined to be the outlet temperature sensor, and the temperature sensor with the lower detected temperature is determined to be the inlet temperature sensor. The automatic detection mode includes a cooling detection mode; Adjusting the electronic expansion valve of the indoor unit to a preset opening includes: In the cooling detection mode, the electronic expansion valve is adjusted to its basic opening; in the cooling detection mode, after calculating the temperature difference between the two temperature sensors based on the detected temperature, the method further includes: If the temperature difference is less than or equal to the preset temperature difference, the electronic expansion valve of the indoor unit is adjusted to reduce the preset opening value or the preset opening ratio from the basic opening. After the indoor unit has been running for a preset time, the detected temperatures of the two temperature sensors in the cooling detection mode are obtained, and the cooling temperature difference between the two temperature sensors is calculated based on the detected temperatures in the cooling detection mode. Repeat the above steps until the temperature difference in the cooling mode is greater than the preset temperature difference. Then, determine the temperature sensor with the higher detection temperature in the cooling detection mode as the outlet temperature sensor, and determine the temperature sensor with the lower detection temperature in the cooling detection mode as the inlet temperature sensor.

2. The automatic detection method for the indoor unit temperature sensor according to claim 1, characterized in that, The automatic detection mode also includes a heating detection mode; Adjusting the electronic expansion valve of the indoor unit to a preset opening includes: In heating detection mode, adjust the electronic expansion valve to its maximum opening.

3. The automatic detection method for the indoor unit temperature sensor according to claim 2, characterized in that, In the heating detection mode, after calculating the temperature difference between the two temperature sensors based on the detected temperature, the method further includes: If the temperature difference is less than or equal to the preset temperature difference, then adjust the outdoor unit compressor to increase the preset frequency value; After the indoor unit has been running for a preset time, the detected temperatures of the two temperature sensors in the heating detection mode are obtained, and the heating temperature difference between the two temperature sensors is calculated based on the detected temperatures in the heating detection mode. Repeat the above steps until the heating temperature difference is greater than the preset temperature difference. Then, determine the temperature sensor with the higher detection temperature in the heating detection mode as the outlet temperature sensor, and determine the temperature sensor with the lower detection temperature in the heating detection mode as the inlet temperature sensor.

4. The automatic detection method for the indoor unit temperature sensor according to claim 1, characterized in that, After determining that the temperature sensor with the higher detection temperature is the outlet temperature sensor and the temperature sensor with the lower detection temperature is the inlet temperature sensor, the method further includes: Control the indoor unit to exit the automatic detection mode and obtain the outdoor unit's ambient temperature; After the outdoor unit ambient temperature reaches the preset temperature range, the outlet temperature of the outlet temperature sensor and the inlet temperature of the inlet temperature sensor are obtained. The opening degree of the electronic expansion valve is adjusted according to the outlet temperature and the inlet temperature, and the operation of the indoor unit is controlled based on the opening degree.

5. An automatic detection device for an indoor unit temperature sensor, characterized in that, include: The control module is used to control the indoor unit to enter the automatic detection mode and adjust the electronic expansion valve of the indoor unit to a preset opening degree when the indoor unit starts up command is received. The acquisition module is used to acquire the detected temperatures of the two temperature sensors respectively after the indoor unit maintains the preset opening degree for a preset time; The determination module is used to calculate the temperature difference between the two temperature sensors based on the detected temperature. If the temperature difference is greater than a preset temperature difference, the temperature sensor with the higher detected temperature is determined to be the outlet temperature sensor, and the temperature sensor with the lower detected temperature is determined to be the inlet temperature sensor. The automatic detection mode includes a cooling detection mode; The control module is specifically used for: In cooling detection mode, adjust the electronic expansion valve to the basic opening degree; The device further includes an adjustment module, specifically used for: In the cooling detection mode, after calculating the temperature difference between the two temperature sensors based on the detected temperature, if the temperature difference is less than or equal to a preset temperature difference, the electronic expansion valve of the indoor unit is adjusted from the base opening to a preset opening value or a preset opening ratio. After the indoor unit has been running for a preset time, the detected temperatures of the two temperature sensors in the cooling detection mode are obtained, and the cooling temperature difference between the two temperature sensors is calculated based on the detected temperatures in the cooling detection mode. Repeat the above steps until the temperature difference in the cooling mode is greater than the preset temperature difference. Then, determine the temperature sensor with the higher detection temperature in the cooling detection mode as the outlet temperature sensor, and determine the temperature sensor with the lower detection temperature in the cooling detection mode as the inlet temperature sensor.

6. An electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that, When the processor executes the program, it implements the automatic detection method for the indoor unit temperature sensor as described in any one of claims 1 to 4.

7. A non-transitory computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by the processor, it implements the automatic detection method for the indoor unit temperature sensor as described in any one of claims 1 to 4.

8. A computer program product, comprising a computer program, characterized in that, When the computer program is executed by the processor, it implements the automatic detection method for the indoor unit temperature sensor as described in any one of claims 1 to 4.

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