Air conditioners and their control methods

Abstract

This invention proposes an air conditioner and its control method. The air conditioner includes: a casing, a refrigerant circulation loop, a refrigeration system, an infrared image acquisition device, an indoor temperature sensor, an outdoor temperature sensor, and a controller. The controller is configured to: acquire the indoor ambient temperature, the outdoor ambient temperature, and a panoramic infrared image; determine the compressor's output capacity value based on the indoor and outdoor ambient temperatures; determine the heat dissipation of the indoor heat source based on the indoor ambient temperature and the panoramic infrared image; and correct the compressor's target operating frequency based on the heat dissipation of the indoor heat source and the compressor's output capacity value to reduce indoor temperature fluctuations. This invention performs temperature and area analysis on the infrared image to detect the temperature difference between the indoor heat source and the ambient temperature in real time, calculate the heat dissipation of the indoor heat source, and adjust the compressor frequency to maintain a stable indoor ambient temperature, ensuring user comfort, while also achieving active energy-saving functionality for the compressor.

Description

Technical Field

[0001] This invention relates to the field of air conditioner technology, and in particular to an air conditioner and its control method. Background Technology

[0002] Air conditioners are a widely used electrical appliance in people's lives. They play an important role in regulating indoor temperature, providing users with a healthy and comfortable indoor environment to meet their normal work, life, and study needs. However, with the current global energy shortage, people are increasingly aware of energy conservation and have higher and higher requirements for the energy efficiency of air conditioners.

[0003] In existing technologies, the current approach involves controlling the on / off state of the air conditioner in a given area by detecting the frequency of people in different indoor zones; adjusting the compressor frequency based on the number of people to control the cooling output; and reducing the compressor frequency based on whether there is activity in a relevant area to achieve energy saving. However, this method only adjusts the compressor frequency based on the number of people, which results in a relatively large error. Summary of the Invention

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art.

[0005] Therefore, one objective of this invention is to provide an air conditioner that, when turned on, scans the indoor environment using an infrared image acquisition device to generate a panoramic infrared image. It then detects the indoor and outdoor ambient temperatures using indoor and outdoor temperature sensors. Based on the panoramic infrared image, the indoor and outdoor temperatures, the air conditioner performs temperature and area analysis on the infrared image to detect the temperature difference between the indoor heat source and the ambient temperature in real time. This allows for the calculation of the heat dissipation from the indoor heat source and the adjustment of the compressor frequency to maintain a stable indoor temperature, ensuring user comfort. Simultaneously, it also achieves active energy-saving functionality for the compressor.

[0006] Therefore, a second objective of this invention is to provide a control method for an air conditioner.

[0007] To achieve the above objectives, a first aspect of the present invention provides an air conditioner, comprising: a casing; a refrigerant circulation loop disposed within the casing, wherein the refrigerant circulates in a loop consisting of a compressor, a condenser, an expansion valve, an evaporator, a four-way valve, and a pressure reducer; a refrigeration system disposed within the casing, wherein the refrigeration system performs heat exchange between the refrigerant and indoor air in a compression refrigeration cycle of the refrigerant circulation loop, the refrigeration system including the compressor, the compressor being used to compress low-temperature, low-pressure refrigerant gas into high-temperature, high-pressure refrigerant gas and discharge it to the condenser; and an infrared image acquisition device disposed within the casing, used to scan the indoor environment and generate an infrared image sensor. The system includes: a panoramic infrared image of the indoor environment; an indoor temperature sensor for detecting the temperature of the indoor environment; an outdoor temperature sensor for detecting the temperature of the outdoor environment; and a controller configured to: acquire the temperature of the indoor environment, the temperature of the outdoor environment, and the panoramic infrared image; determine the output capacity value of the compressor based on the indoor and outdoor temperatures; determine the heat dissipation of an indoor heat source in the indoor environment based on the indoor temperature and the panoramic infrared image; and correct the target operating frequency of the compressor based on the heat dissipation of the indoor heat source and the output capacity value of the compressor to reduce temperature fluctuations in the indoor environment.

[0008] According to an embodiment of the present invention, an air conditioner is equipped with an infrared image acquisition device, an indoor temperature sensor, and an outdoor temperature sensor to detect a panoramic infrared image of the indoor environment, the indoor temperature, and the outdoor temperature after the air conditioner is started. The controller determines the compressor's output capacity value based on the acquired indoor and outdoor temperatures; it determines the heat dissipation of the indoor heat source based on the indoor temperature and the panoramic infrared image; and it corrects the compressor's target operating frequency based on the heat dissipation of the indoor heat source and the compressor's output capacity value to reduce indoor temperature fluctuations. Thus, after startup, the air conditioner performs temperature and area analysis on the infrared image to detect the temperature difference between the indoor heat source and the ambient temperature in real time, calculates the heat dissipation of the indoor heat source, and adjusts the compressor frequency to maintain a stable indoor temperature, ensuring user comfort and achieving active energy-saving functionality of the compressor.

[0009] In some embodiments, when determining the heat dissipation of an indoor heat source based on the indoor ambient temperature and the panoramic infrared image, the controller is specifically configured to: divide the panoramic infrared image into N infrared light blocks according to color intervals; wherein each color interval corresponds to one infrared light block; determine the area and surface radiation temperature corresponding to each infrared light block; and determine the heat dissipation of the indoor heat source based on the indoor ambient temperature, the area of ​​each infrared light block, and the surface radiation temperature.

[0010] In some embodiments, when determining the heat dissipation of the indoor heat source based on the indoor ambient temperature, the area of ​​each infrared light block, and the surface radiation temperature, the controller is specifically configured to:

[0011] Q sum =Q1 + Q2 + ... + Q i +…+Q N ;

[0012]

[0013] Among them, Q sum Where N is the heat dissipation of the indoor heat source, and Q is the number of infrared light blocks. i ε represents the heat dissipation of the i-th infrared light block. i Let be the emissivity of the material within the i-th infrared light block, Б be the Stephen-Polhertz constant, and T be... i T is the surface radiation temperature of the i-th infrared light block. indoor S represents the temperature of the indoor environment. i Let be the area of ​​the i-th infrared light block.

[0014] In some embodiments, after determining the heat dissipation of the indoor heat source based on the temperature of the indoor environment, the area of ​​each of the infrared light blocks, and the surface radiation temperature, the controller is further configured to: correct the heat dissipation of the indoor heat source to obtain a corrected heat dissipation of the indoor heat source.

[0015] In some embodiments, when correcting the heat dissipation of the indoor heat source, the controller is specifically configured to multiply the heat dissipation of the indoor heat source by a preset correction coefficient to obtain the corrected heat dissipation of the indoor heat source.

[0016] In some embodiments, when determining the surface radiation temperature corresponding to each infrared light block, the controller is specifically configured to: determine the surface radiation temperature range corresponding to the infrared light block based on the color range where the infrared light block is located; and take the average temperature of the surface radiation temperature range as the surface radiation temperature of the corresponding infrared light block.

[0017] In some embodiments, when determining the surface radiation temperature range corresponding to the infrared light block based on the color range where the infrared light block is located, the controller is specifically configured to: query a preset color range-surface radiation temperature range correspondence mapping table based on the color range where the infrared light block is located, to obtain the surface radiation temperature range corresponding to the color range where the infrared light block is located; wherein, the color range-surface radiation temperature range correspondence mapping table contains at least one set of color range-surface radiation temperature range correspondences, and the at least one set of color range-surface radiation temperature range correspondences includes at least the correspondence between the color range and the surface radiation temperature range.

[0018] In some embodiments, when the target operating frequency of the compressor is corrected based on the heat dissipation of the indoor heat source and the output capacity of the compressor, the controller is specifically configured to:

[0019] F obj =F ope +Q sum / P pre ;

[0020] Among them, F obj For the target operating frequency of the corrected compressor, F ope Q is the target operating frequency of the compressor before correction. sum P represents the heat dissipation of the indoor heat source. pre This represents the output capacity value of the compressor.

[0021] In some embodiments, when determining the output capacity value of the compressor based on the indoor ambient temperature and the outdoor ambient temperature, the controller is specifically configured to: query a preset mapping table of indoor ambient temperature-outdoor ambient temperature-compressor output capacity value correspondence based on the indoor ambient temperature and the outdoor ambient temperature, and obtain the output capacity value of the compressor corresponding to the indoor ambient temperature and the outdoor ambient temperature; wherein, the mapping table of indoor ambient temperature-outdoor ambient temperature-compressor output capacity value correspondence includes at least one set of correspondences between indoor ambient temperature-outdoor ambient temperature-compressor output capacity value, and the at least one set of correspondences between indoor ambient temperature-outdoor ambient temperature-compressor output capacity value correspondence includes at least the correspondence between the indoor ambient temperature, the outdoor ambient temperature and the compressor output capacity value.

[0022] In some embodiments, after correcting the target operating frequency of the compressor based on the heat dissipation of the indoor heat source and the output capacity value of the compressor, the controller is further configured to: determine whether the temperature of the indoor environment has reached a preset temperature range; when it is determined that the temperature of the indoor environment has reached the preset temperature range, control the compressor to operate at the current target operating frequency; when it is determined that the temperature of the indoor environment has not reached the preset temperature range, return to the step of correcting the target operating frequency of the compressor based on the heat dissipation of the indoor heat source and the output capacity value of the compressor to reduce the temperature fluctuation of the indoor environment, until the temperature of the indoor environment reaches the preset temperature range.

[0023] To achieve the above objectives, a second aspect of the present invention provides a control method for an air conditioner, used to control an air conditioner as described in any one of the embodiments of the first aspect of the present invention. The method includes the following steps: acquiring the indoor ambient temperature, the outdoor ambient temperature, and a panoramic infrared image; determining the output capacity value of a compressor based on the indoor ambient temperature and the outdoor ambient temperature; determining the heat dissipation of an indoor heat source based on the indoor ambient temperature and the panoramic infrared image; and correcting the target operating frequency of the compressor based on the heat dissipation of the indoor heat source and the output capacity value of the compressor to reduce fluctuations in the indoor ambient temperature.

[0024] According to the air conditioner control method of this embodiment, a panoramic infrared image of the indoor environment, the indoor temperature, and the outdoor temperature are detected respectively after the air conditioner is started. The controller determines the compressor's output capacity value based on the indoor and outdoor temperatures obtained at this time; the heat dissipation of the indoor heat source in the indoor environment is determined based on the indoor temperature and the panoramic infrared image; and the target operating frequency of the compressor is corrected based on the heat dissipation of the indoor heat source and the compressor's output capacity value to reduce indoor temperature fluctuations. Therefore, through this air conditioner control method, after startup, the air conditioner performs temperature and area analysis on the infrared image to detect the temperature difference between the indoor heat source and the ambient temperature in real time, calculates the heat dissipation of the indoor heat source, and adjusts the compressor frequency to maintain a stable indoor temperature, ensuring user comfort, and also achieving active energy-saving function of the compressor.

[0025] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0026] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0027] Figure 1 This is a schematic diagram of the structure of an air conditioner according to an embodiment of the present invention;

[0028] Figure 2 This is a schematic diagram of infrared image temperature and area analysis of an air conditioner according to an embodiment of the present invention;

[0029] Figure 3 This is a schematic diagram of infrared image temperature and area analysis of an air conditioner according to yet another embodiment of the present invention;

[0030] Figure 4 This is a control process diagram of an air conditioner controller according to an embodiment of the present invention;

[0031] Figure 5 This is a control process diagram of the controller of an air conditioner according to yet another embodiment of the present invention;

[0032] Figure 6 This is a flowchart of a control method for an air conditioner according to an embodiment of the present invention.

[0033] Figure descriptions: Air conditioner-1; Housing-10; Refrigerant circulation loop-20; Refrigeration system-30; Infrared image acquisition device-40; Indoor temperature sensor-50; Outdoor temperature sensor-60; Controller-70. Detailed Implementation

[0034] The embodiments of the present invention are described in detail below. The embodiments described with reference to the accompanying drawings are exemplary. The embodiments of the present invention are described in detail below.

[0035] In this invention, the air conditioner performs a refrigeration cycle by using a compressor, a condenser, an expansion valve, and an evaporator. The refrigeration cycle includes a series of processes involving compression, condensation, expansion, and evaporation, and supplies refrigerant to the conditioned and heat-exchanged air.

[0036] The compressor compresses refrigerant gas under high temperature and pressure and discharges the compressed refrigerant gas. The discharged refrigerant gas flows into the condenser. The condenser condenses the compressed refrigerant into a liquid phase, and the heat is released to the surrounding environment through the condensation process.

[0037] The expansion valve expands the high-temperature, high-pressure liquid refrigerant condensed in the condenser into a low-temperature, low-pressure liquid refrigerant. The evaporator evaporates the expanded refrigerant in the expansion valve and returns the low-temperature, low-pressure refrigerant gas to the compressor. The evaporator achieves its cooling effect by utilizing the latent heat of refrigerant evaporation to exchange heat with the material being cooled. Throughout the cycle, the air conditioner regulates the temperature of the indoor space.

[0038] The following is for reference. Figures 1-6An air conditioner 1 and its control method according to an embodiment of the present invention are described.

[0039] like Figure 1 As shown, the air conditioner 1 of this embodiment includes: a casing 10, a refrigerant circulation loop 20, a refrigeration system 30, an infrared image acquisition device 40, an indoor temperature sensor 50, an outdoor temperature sensor 60, and a controller 70.

[0040] The refrigerant circulation loop 20 circulates the refrigerant within a circuit consisting of the compressor, condenser, expansion valve, evaporator, four-way valve, and pressure reducer. The refrigeration system 30 is housed within the casing 10, which provides protection for it. The refrigeration system 30 facilitates heat exchange between the refrigerant and indoor air within the compression refrigeration cycle of the refrigerant circulation loop 20. The refrigeration system 30 includes a compressor, which compresses the low-temperature, low-pressure refrigerant gas into a high-temperature, high-pressure refrigerant gas and discharges it to the condenser.

[0041] An infrared image acquisition device 40 is installed inside the housing 10 to scan the indoor environment and generate a panoramic infrared image of the indoor environment; an indoor temperature sensor 50 is used to detect the temperature of the indoor environment; and an outdoor temperature sensor 60 is used to detect the temperature of the outdoor environment.

[0042] The controller 70 is configured to: acquire the indoor ambient temperature, the outdoor ambient temperature, and a panoramic infrared image; determine the compressor's output capacity value based on the indoor ambient temperature and the outdoor ambient temperature; determine the heat dissipation of indoor heat sources in the indoor environment based on the indoor ambient temperature and the panoramic infrared image; and correct the compressor's target operating frequency based on the heat dissipation of indoor heat sources and the compressor's output capacity value to reduce indoor ambient temperature fluctuations.

[0043] Specifically, when the air conditioner 1 is started, the controller 70 acquires the panoramic infrared images detected by the infrared image acquisition device 40, the indoor temperature sensor 50, and the outdoor temperature sensor 60, as well as the indoor and outdoor temperatures, and determines the compressor's output capacity and the heat dissipation of indoor heat sources. Based on the heat dissipation of indoor heat sources and the compressor's output capacity, the controller adaptively adjusts the compressor's target operating frequency to reduce indoor temperature fluctuations, ensuring user comfort and the compressor's energy-saving effect. Specifically, when the air conditioner 1 is started, the infrared image acquisition device 40 uses the infrared wavelengths emitted by heat to scan the indoor environment, converting thermal radiation into image signals to display the temperature changes and distribution of indoor heat sources, and generating a panoramic infrared image of the indoor environment. Simultaneously, the indoor temperature sensor 50 and the outdoor temperature sensor 60 monitor the indoor and outdoor temperatures in real time. Furthermore, the controller 70 determines the compressor's output capacity value based on the indoor and outdoor ambient temperatures, and determines the heat dissipation of indoor heat sources based on the indoor ambient temperature and panoramic infrared image. This allows the controller to correct the compressor's target operating frequency based on the heat dissipation of indoor heat sources and the compressor's output capacity value, thereby reducing indoor temperature fluctuations and ensuring user comfort as well as the compressor's energy-saving effect.

[0044] According to an embodiment of the present invention, the air conditioner 1, by setting up an infrared image acquisition device 40, an indoor temperature sensor 50, and an outdoor temperature sensor 60, respectively detects the panoramic infrared image of the indoor environment, the indoor temperature, and the outdoor temperature after the air conditioner 1 is started. The controller 70 determines the output capacity value of the compressor based on the indoor and outdoor temperatures acquired at this time; determines the heat dissipation of the indoor heat source in the indoor environment based on the indoor temperature and the panoramic infrared image; and corrects the target operating frequency of the compressor based on the heat dissipation of the indoor heat source and the compressor output capacity value to reduce indoor temperature fluctuations. Thus, after the air conditioner 1 is started, by performing temperature and area analysis on the infrared image to detect the temperature difference between the indoor heat source and the ambient temperature in real time, calculate the heat dissipation of the indoor heat source, and adjust the compressor frequency, thereby maintaining a stable indoor temperature, ensuring user comfort, and also realizing the function of active energy saving of the compressor.

[0045] In some embodiments, when determining the heat dissipation of an indoor heat source based on the indoor ambient temperature and the panoramic infrared image, the controller 70 is specifically configured to: divide the panoramic infrared image into N infrared light blocks according to color intervals; wherein each color interval corresponds to one infrared light block; determine the area and surface radiation temperature corresponding to each infrared light block; and determine the heat dissipation of the indoor heat source based on the indoor ambient temperature, the area and surface radiation temperature of each infrared light block.

[0046] Specifically, such as Figure 2 and Figure 3 As shown, after the air conditioner 1 is started, the controller 70 can determine the heat dissipation of the indoor heat source based on the acquired indoor temperature and panoramic infrared image, so as to better regulate the indoor temperature. Specifically, the controller 70 divides the panoramic infrared image into N infrared light blocks according to color ranges. Each color range corresponds to one infrared light block, and each infrared light block represents a different temperature range. For example, if the color block is warm red, the temperature range of the infrared light block corresponding to its color range can be 20-35 degrees Celsius. Therefore, the controller 70 can analyze and process each infrared light block to determine the area and surface radiation temperature corresponding to each infrared light block. In some other embodiments, the infrared image acquisition device 40 includes an infrared thermometer, which is specifically composed of an optical system, a photodetector, a signal amplifier, signal processing, and display output. The optical system focuses the infrared radiation energy of the target within its field of view, and the size of the area is determined by the optical components and their positions of the thermometer. Infrared energy focused onto a photodetector can be converted into a corresponding electrical signal. This signal, after being amplified and processed by a signal processing circuit, and corrected according to the instrument's internal algorithm and target emissivity, is converted into the temperature value of the target being measured. Thus, the infrared image acquisition device can directly output the surface radiation temperature of the infrared light block to the controller 70, which is also within the scope of this invention. Finally, based on the indoor ambient temperature, the area of ​​each infrared light block, and its surface radiation temperature, the controller 70 can determine the heat dissipation of the indoor heat source, i.e., the heat emitted by the indoor heat source.

[0047] In some embodiments, when determining the heat dissipation of the indoor heat source based on the indoor ambient temperature, the area of ​​each infrared light block, and the surface radiation temperature, the controller 70 is specifically configured to:

[0048] Q sum =Q1 + Q2 + ... + Q i +…+Q N ;

[0049]

[0050] Among them, Q sum Where Q is the heat dissipation of the indoor heat source, N is the number of infrared light blocks, and Q is the heat dissipation of the indoor heat source. i Let ε be the heat dissipation of the i-th infrared light block. i Let be the emissivity of the material within the i-th infrared region, Б be the Stephen-Polhertz constant, and T be... i Let T be the surface radiation temperature of the i-th infrared light block. indoor For the indoor temperature, S i Let be the area of ​​the i-th infrared light block.

[0051] Specifically, after air conditioner 1 is turned on, Q can be... sum Let Q be the heat dissipation from the indoor heat source. i Let ε be the heat dissipation of the i-th infrared light block. i Let Α be the emissivity of the material within the i-th infrared region, which can be 0-1, for example. Different materials have different emissivity. Α can be denoted as the Stephen-Polhertz constant, for example, Α can be taken as 5.67*10-8w / (m 2 ·k4), can be T i Let T be the surface radiation temperature of the i-th infrared region. indoor Recorded as the indoor ambient temperature, S i Let Q be the area of ​​the i-th infrared light block. It is understandable that, in different indoor environments, after the controller 70 divides the panoramic infrared image into N infrared light blocks according to color ranges, when determining the heat dissipation of the indoor heat source based on the temperature of the different indoor environments, the area of ​​each infrared light block, and the surface radiation temperature, different parameters can be substituted into the formula Q. sum =Q1 + Q2 + ... + Q i +…+Q N as well as The system performs calculations to obtain a more accurate reading of the heat dissipation from the indoor heat source, which allows the controller 70 to more precisely control the air conditioner 1 to reduce temperature fluctuations, maintain a stable indoor temperature, and ensure user comfort.

[0052] In some embodiments, after determining the heat dissipation of the indoor heat source based on the indoor ambient temperature, the area of ​​each infrared light block, and the surface radiation temperature, the controller 70 is further configured to: correct the heat dissipation of the indoor heat source to obtain a corrected heat dissipation of the indoor heat source.

[0053] Specifically, when determining the heat dissipation of an indoor heat source based on the indoor ambient temperature, the area of ​​each infrared light block, and the surface radiation temperature, several factors can affect the accuracy of the calculation results, including but not limited to errors in calculating the location, size, and shape of the indoor heat source. By correcting the heat dissipation of the indoor heat source, a more accurate result can be obtained. That is, by correcting the heat dissipation of the indoor heat source, the controller 70 can more precisely control the air conditioner 1 to reduce temperature fluctuations, maintain a stable indoor temperature, and ensure user comfort.

[0054] In some embodiments, when correcting the heat dissipation of an indoor heat source, the controller 70 is specifically configured to multiply the heat dissipation of the indoor heat source by a preset correction coefficient to obtain the corrected heat dissipation of the indoor heat source.

[0055] Specifically, before correcting the heat dissipation of the indoor heat source, a correction coefficient α can be preset and stored in the controller 70. The corrected heat dissipation of the indoor heat source is the product of the original heat dissipation and the correction coefficient α. It can be understood that the correction coefficient α can be an adjustable empirical value used to fit the deviation between the theoretical calculation and actual measurement of the heat dissipation of the indoor heat source. That is, the heat dissipation of the indoor heat source can be corrected first using a preset correction coefficient α to ensure that the heat dissipation of the indoor heat source has optimal applicability and accuracy.

[0056] In some embodiments, when determining the surface radiation temperature corresponding to each infrared light block, the controller 70 is specifically configured to: determine the surface radiation temperature range corresponding to the infrared light block based on the color range where the infrared light block is located; and use the average temperature of the corresponding surface radiation temperature range as the surface radiation temperature of the corresponding infrared light block.

[0057] Specifically, in the panoramic infrared image, different color intervals represent different temperature intervals; that is, each color interval corresponds to a certain surface radiation temperature range. After the air conditioner 1 is started, when the controller 70 determines the surface radiation temperature corresponding to each infrared light block, it can first divide the panoramic infrared image into N infrared light blocks according to the color intervals, and then determine the surface radiation temperature range corresponding to that block based on the color interval of each infrared light block. After determining the surface radiation temperature range corresponding to the infrared light block, the controller 70 can use the average temperature of this range as the surface radiation temperature of the corresponding infrared light block. It can be understood that by determining the surface radiation temperature range based on the color intervals and using the average temperature of the surface radiation temperature range to determine the surface radiation temperature of the infrared light block, more accurate calculation of indoor heat source dissipation can be achieved. This allows the controller 70 to more accurately control the air conditioner 1 to reduce temperature fluctuations, maintain a stable indoor temperature, and ensure user comfort.

[0058] In some embodiments, when determining the surface radiation temperature range corresponding to the infrared light block based on the color range where the infrared light block is located, the controller 70 is specifically configured to: query a preset color range-surface radiation temperature range correspondence mapping table based on the color range where the infrared light block is located, and obtain the surface radiation temperature range corresponding to the color range where the infrared light block is located; wherein, the color range-surface radiation temperature range correspondence mapping table contains at least one set of color range-surface radiation temperature range correspondences, and the at least one set of color range-surface radiation temperature range correspondences includes at least the correspondence between the color range and the surface radiation temperature range.

[0059] Specifically, the surface radiation temperature ranges corresponding to different color ranges in the color range-surface radiation temperature range mapping table can be obtained through experimental calibration and pre-stored in the controller. After the air conditioner 1 is started, when the controller 70 determines the surface radiation temperature range corresponding to the infrared light block based on the color range where the infrared light block is located, it can query the preset color range-surface radiation temperature range mapping table to obtain the surface radiation temperature range corresponding to the color range where the infrared light block is located. Specifically, the preset color range-surface radiation temperature range mapping table stores the pre-set surface radiation temperature range corresponding to each color range. When the controller 70 determines the color range where a certain infrared light block is located, it will query the preset color range-surface radiation temperature range mapping table to find the surface radiation temperature range corresponding to that color range. The color interval-surface radiation temperature interval correspondence mapping table contains at least one set of color interval-surface radiation temperature interval correspondences. The at least one set of color interval-surface radiation temperature interval correspondences includes at least the correspondence between the color interval and the surface radiation temperature interval. That is, the color interval-surface radiation temperature interval correspondence mapping table may contain one or more sets of color interval-surface radiation temperature interval correspondences, where each color interval corresponds to a surface radiation temperature interval.

[0060] In some embodiments, when the target operating frequency of the compressor is corrected based on the heat dissipation of the indoor heat source and the output capacity of the compressor, the controller 70 is specifically configured to:

[0061] F obj =F ope +Q sum / P pre ;

[0062] Among them, F obj For the target operating frequency of the corrected compressor, F ope Q is the target operating frequency of the compressor before correction. sum P represents the heat dissipation from the indoor heat source. pre This represents the output capacity of the compressor.

[0063] Specifically, combined Figure 4 As shown, F can be obj Let F be the target operating frequency of the corrected compressor. ope Let Q be the target operating frequency of the compressor before correction. sum Let P be the heat dissipation from the indoor heat source. preThis is denoted as the compressor's output capacity value. Therefore, the controller 70 can substitute the calculated heat dissipation from the indoor heat source, the compressor's output capacity value, and the compressor's target operating frequency into formula F. obj =F ope +Q sum / P pre From this, the corrected target operating frequency of the compressor can be obtained. The corrected frequency F of the compressor can be calculated based on the heat dissipation of the indoor heat source and the compressor's output capacity. rev That is, F rev =Q sum / P pre Thus, in this embodiment of the invention, the target operating frequency of the compressor is adjusted according to the heat dissipation of the indoor heat source. When the indoor heat source increases, the operating frequency of the compressor is automatically increased, and when the indoor heat source decreases, the operating frequency of the compressor is automatically decreased, thereby achieving the effect of active energy saving of the compressor.

[0064] In some embodiments, when determining the compressor's output capacity value based on the indoor and outdoor ambient temperatures, the controller 70 is specifically configured to: query a preset mapping table of indoor ambient temperature-outdoor ambient temperature-compressor output capacity value correspondence based on the indoor and outdoor ambient temperatures to obtain the compressor's output capacity value corresponding to the indoor and outdoor ambient temperatures; wherein, the mapping table of indoor ambient temperature-outdoor ambient temperature-compressor output capacity value correspondence includes at least one set of correspondences between indoor ambient temperature-outdoor ambient temperature-compressor output capacity value, and the at least one set of correspondences between indoor ambient temperature-outdoor ambient temperature-compressor output capacity value correspondence includes at least the correspondence between indoor ambient temperature, outdoor ambient temperature and compressor output capacity value.

[0065] Specifically, the compressor output capacity values ​​corresponding to different indoor and outdoor ambient temperatures in the mapping table of indoor ambient temperature - outdoor ambient temperature - compressor output capacity values ​​can be obtained through experimental calibration and pre-stored in the controller. After the air conditioner 1 is started, when the controller 70 determines the compressor output capacity value based on the indoor and outdoor ambient temperatures, it can query the preset mapping table of indoor ambient temperature - outdoor ambient temperature - compressor output capacity values ​​to obtain the compressor output capacity value corresponding to the indoor and outdoor ambient temperatures. Specifically, the preset mapping table of indoor ambient temperature - outdoor ambient temperature - compressor output capacity values ​​stores the pre-set compressor output capacity values ​​corresponding to each indoor and outdoor ambient temperature. When the controller 70 determines the current indoor and outdoor ambient temperatures, it will query the preset mapping table of indoor ambient temperature - outdoor ambient temperature - compressor output capacity values ​​to find the compressor output capacity value corresponding to that indoor and outdoor ambient temperature. The mapping table for the correspondence between indoor ambient temperature, outdoor ambient temperature, and compressor output capacity contains at least one set of correspondences. This at least one set of correspondences includes at least the correspondence between indoor ambient temperature, outdoor ambient temperature, and compressor output capacity. Specifically, the mapping table can contain one or more sets of these correspondences, where each indoor and outdoor ambient temperature corresponds to a compressor output capacity value. For example, if the current indoor ambient temperature is 25°C and the outdoor ambient temperature is 30°C, the controller 70 queries the mapping table and finds that the compressor output capacity corresponding to this temperature condition is 200W; if the current indoor ambient temperature is 27°C and the outdoor ambient temperature is 30°C, the controller 70 queries the mapping table and finds that the compressor output capacity corresponding to this temperature condition is 300W.

[0066] In some embodiments, after correcting the target operating frequency of the compressor based on the heat dissipation of the indoor heat source and the output capacity of the compressor, the controller 70 is further configured to: determine whether the temperature of the indoor environment has reached a preset temperature range; when it is determined that the temperature of the indoor environment has reached the preset temperature range, control the compressor to operate at the current target operating frequency; when it is determined that the temperature of the indoor environment has not reached the preset temperature range, return to the step of correcting the target operating frequency of the compressor based on the heat dissipation of the indoor heat source and the output capacity of the compressor to reduce the temperature fluctuation of the indoor environment, until the temperature of the indoor environment reaches the preset temperature range.

[0067] Specifically, after the air conditioner 1 is started, the controller 70 can adjust the target operating frequency of the compressor based on the heat dissipation of the indoor heat source and the output capacity of the compressor. During the adjustment process, the controller 70 can acquire the indoor ambient temperature detected by the indoor temperature sensor 50 in real time and adjust the target operating frequency of the compressor according to the indoor ambient temperature to reduce indoor temperature fluctuations, thereby achieving better temperature control and ensuring user comfort and compressor energy efficiency. Specifically, the controller 70 can determine whether the indoor ambient temperature has reached the preset temperature range. When the controller 70 determines that the indoor ambient temperature has reached the preset temperature range, it controls the compressor to operate at the current target operating frequency. When the controller 70 determines that the indoor ambient temperature has not reached the preset temperature range, it returns to the step of adjusting the target operating frequency of the compressor based on the heat dissipation of the indoor heat source and the output capacity of the compressor to reduce indoor temperature fluctuations, until the indoor ambient temperature reaches the preset temperature range.

[0068] Furthermore, the controller 70 can acquire the indoor and outdoor ambient temperatures and a panoramic infrared image at preset intervals. Based on these temperatures, it determines the compressor's output capacity and the amount of heat dissipation from indoor heat sources. It then adjusts the compressor's target operating frequency according to the heat dissipation and output capacity. Specifically, every preset interval, such as one hour, the compressor's operating frequency is adjusted based on the indoor heat load. This proactively increases heating capacity when the heat source increases to reduce indoor temperature fluctuations, and reduces the compressor frequency when the heat source decreases, achieving proactive energy saving. When the compressor frequency is adjusted to bring the indoor ambient temperature to a stable range, the current control parameters are maintained. When the indoor ambient temperature does not reach the stable range, the adjustment process of correcting the compressor's target operating frequency based on the heat dissipation and output capacity is repeated until the compressor's operating parameters match the indoor heat load.

[0069] As a specific embodiment, the following is combined with Figure 5 As shown, the overall control flow of the air conditioner 1 in this embodiment of the invention will be illustrated by example.

[0070] In this embodiment, as Figure 5 As shown, the controller 70 of air conditioner 1 mainly performs the following steps:

[0071] Step S11: Turn on the air conditioner.

[0072] Step S12: The infrared image acquisition device performs indoor infrared panoramic scanning at fixed intervals.

[0073] Step S13: Analyze the image and output the area S of each infrared light block, the surface radiation temperature T of the heat source, and the indoor ambient temperature T. indoor .

[0074] Step S14: Calculate the compressor correction frequency F based on the preset parameters and formulas of the control module. rev .

[0075] Step S15, correct the compressor target frequency F obj The system detects the trend of indoor ambient temperature change and determines whether the indoor temperature has reached the set stable temperature range. If yes, it executes step S16; otherwise, it executes step S17.

[0076] Step S16: The indoor temperature reaches the set stable temperature range, maintains the current parameters, and the system continues to run.

[0077] Step S17: The indoor temperature has not reached the set stable temperature range, so the adjustment process is repeated.

[0078] According to an embodiment of the air conditioner 1, by setting up an infrared image acquisition device 40, an indoor temperature sensor 50, and an outdoor temperature sensor 60, the air conditioner 1 detects the panoramic infrared image of the indoor environment, the indoor temperature, and the outdoor temperature after the air conditioner 1 is started. The controller 70 determines the compressor's output capacity value based on the acquired indoor and outdoor temperatures; determines the heat dissipation of the indoor heat source based on the indoor temperature and the panoramic infrared image; and corrects the compressor's target operating frequency based on the heat dissipation of the indoor heat source and the compressor's output capacity value to reduce indoor temperature fluctuations. Thus, after startup, the air conditioner 1 performs temperature and area analysis on the infrared image to detect the temperature difference between the indoor heat source and the ambient temperature in real time, calculates the heat dissipation of the indoor heat source, and adjusts the compressor frequency to maintain a stable indoor temperature, ensuring user comfort, and also achieving active energy-saving functionality of the compressor.

[0079] The following is for reference. Figure 6The present invention describes a control method for an air conditioner, which is used in any of the above embodiments of the air conditioner 1. The method includes the following steps:

[0080] Step S1: Acquire the indoor temperature, the outdoor temperature, and a panoramic infrared image.

[0081] Step S2: Determine the compressor's output capacity value based on the indoor and outdoor ambient temperatures.

[0082] Step S3: Determine the heat dissipation of the indoor heat source based on the indoor temperature and panoramic infrared image.

[0083] Step S4: Correct the target operating frequency of the compressor based on the heat dissipation of the indoor heat source and the output capacity of the compressor in order to reduce the fluctuation of the indoor ambient temperature.

[0084] In one embodiment of the present invention, when determining the heat dissipation of an indoor heat source based on the indoor ambient temperature and a panoramic infrared image, the specific steps include: dividing the panoramic infrared image into N infrared light blocks according to color intervals; wherein each color interval corresponds to one infrared light block; determining the area and surface radiation temperature corresponding to each infrared light block; and determining the heat dissipation of the indoor heat source based on the indoor ambient temperature, the area and surface radiation temperature of each infrared light block.

[0085] In one embodiment of the present invention, determining the heat dissipation of the indoor heat source based on the indoor ambient temperature, the area of ​​each infrared light block, and the surface radiation temperature specifically includes:

[0086] Q sum =Q1 + Q2 + ... + Q i +…+Q N ;

[0087]

[0088] Among them, Q sum Where Q is the heat dissipation of the indoor heat source, N is the number of infrared light blocks, and Q is the heat dissipation of the indoor heat source. i Let ε be the heat dissipation of the i-th infrared light block. i Let be the emissivity of the material within the i-th infrared region, Б be the Stephen-Polhertz constant, and T be... i Let T be the surface radiation temperature of the i-th infrared light block. indoor For the indoor temperature, S i Let be the area of ​​the i-th infrared light block.

[0089] In one embodiment of the present invention, after determining the heat dissipation of the indoor heat source based on the indoor ambient temperature, the area of ​​each infrared light block and the surface radiation temperature, the control method of the air conditioner further includes: correcting the heat dissipation of the indoor heat source to obtain the corrected heat dissipation of the indoor heat source.

[0090] In one embodiment of the present invention, when correcting the heat dissipation of an indoor heat source, the specific steps include: multiplying the heat dissipation of the indoor heat source by a preset correction coefficient to obtain the corrected heat dissipation of the indoor heat source.

[0091] In one embodiment of the present invention, determining the surface radiation temperature corresponding to each infrared light block specifically includes: determining the surface radiation temperature range corresponding to the infrared light block based on the color range where the infrared light block is located; and taking the average temperature of the corresponding surface radiation temperature range as the surface radiation temperature of the corresponding infrared light block.

[0092] In one embodiment of the present invention, determining the surface radiation temperature range corresponding to the infrared light block based on the color range where the infrared light block is located specifically includes: querying a preset color range-surface radiation temperature range correspondence mapping table based on the color range where the infrared light block is located to obtain the surface radiation temperature range corresponding to the color range where the infrared light block is located; wherein, the color range-surface radiation temperature range correspondence mapping table contains at least one set of color range-surface radiation temperature range correspondences, and the at least one set of color range-surface radiation temperature range correspondences includes at least the correspondence between the color range and the surface radiation temperature range.

[0093] In one embodiment of the present invention, when correcting the target operating frequency of the compressor based on the heat dissipation of the indoor heat source and the output capacity of the compressor, it further includes...

[0094] F obj =F ope +Q sum / P pre ;

[0095] Among them, F obj For the target operating frequency of the corrected compressor, F ope Q is the target operating frequency of the compressor before correction. sum P represents the heat dissipation from the indoor heat source. pre This represents the output capacity of the compressor.

[0096] In one embodiment of the present invention, determining the compressor output capacity value based on the indoor and outdoor ambient temperatures specifically includes: querying a preset mapping table of indoor ambient temperature-outdoor ambient temperature-compressor output capacity value correspondence based on the indoor and outdoor ambient temperatures to obtain the compressor output capacity value corresponding to the indoor and outdoor ambient temperatures; wherein, the mapping table of indoor ambient temperature-outdoor ambient temperature-compressor output capacity value correspondence includes at least one set of correspondences between indoor ambient temperature-outdoor ambient temperature-compressor output capacity value, and the at least one set of correspondences between indoor ambient temperature-outdoor ambient temperature-compressor output capacity value correspondence includes at least the correspondence between indoor ambient temperature, outdoor ambient temperature and compressor output capacity value.

[0097] In one embodiment of the present invention, after correcting the target operating frequency of the compressor based on the heat dissipation of the indoor heat source and the output capacity of the compressor, the method further includes: determining whether the temperature of the indoor environment has reached a preset temperature range; when it is determined that the temperature of the indoor environment has reached the preset temperature range, controlling the compressor to operate at the current target operating frequency; when it is determined that the temperature of the indoor environment has not reached the preset temperature range, returning to the step of correcting the target operating frequency of the compressor based on the heat dissipation of the indoor heat source and the output capacity of the compressor to reduce the temperature fluctuation of the indoor environment, until the temperature of the indoor environment reaches the preset temperature range.

[0098] It should be noted that the control method of the air conditioner in this embodiment of the invention is similar to the specific implementation of the air conditioner in this embodiment of the invention. Please refer to the description in the method section for details. In order to reduce redundancy, it will not be repeated here.

[0099] According to the control method of the air conditioner of the present invention, a panoramic infrared image of the indoor environment, the indoor temperature, and the outdoor temperature are detected respectively after the air conditioner is started. The controller determines the output capacity value of the compressor based on the indoor and outdoor temperatures obtained at this time; determines the heat dissipation of the indoor heat source in the indoor environment based on the indoor temperature and the panoramic infrared image; and corrects the target operating frequency of the compressor based on the heat dissipation of the indoor heat source and the compressor output capacity value to reduce indoor temperature fluctuations. Thus, through this control method, after the air conditioner is started, it performs temperature and area analysis on the infrared image to detect the temperature difference between the indoor heat source and the ambient temperature in real time, calculates the heat dissipation of the indoor heat source, and adjusts the compressor frequency to maintain a stable indoor temperature, ensuring user comfort, and also realizing the function of active energy saving of the compressor.

[0100] In the description of this specification, references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example.

[0101] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. An air conditioner, characterized in that, include: chassis; The refrigerant circulation loop is located inside the casing, allowing the refrigerant to circulate in the loop consisting of the compressor, condenser, expansion valve, evaporator, four-way valve, and pressure reducer. A refrigeration system, located inside the housing, performs heat exchange between the refrigerant and indoor air in a compression refrigeration cycle of the refrigerant circulation loop. The refrigeration system includes the compressor, which is used to compress low-temperature, low-pressure refrigerant gas into high-temperature, high-pressure refrigerant gas and discharge it to the condenser. An infrared image acquisition device is installed inside the housing and is used to scan the indoor environment and generate a panoramic infrared image of the indoor environment. An indoor temperature sensor is used to detect the temperature of the indoor environment; Outdoor temperature sensor, used to detect the temperature of the outdoor environment; A controller configured to acquire the indoor temperature, the outdoor temperature, and a panoramic infrared image; The output capacity value of the compressor is determined based on the indoor temperature and the outdoor temperature. The amount of heat dissipation from indoor heat sources in the indoor environment is determined based on the indoor temperature and the panoramic infrared image. The target operating frequency of the compressor is corrected based on the heat dissipation of the indoor heat source and the output capacity of the compressor in order to reduce temperature fluctuations in the indoor environment.

2. The air conditioner according to claim 1, characterized in that, When determining the heat dissipation of the indoor heat source based on the indoor ambient temperature and the panoramic infrared image, the controller is specifically configured as follows: The panoramic infrared image is divided into N infrared light blocks according to color ranges; wherein each color range corresponds to one infrared light block; Determine the area and surface radiation temperature corresponding to each infrared light block; The heat dissipation of the indoor heat source is determined based on the indoor ambient temperature, the area of ​​each infrared light block, and the surface radiation temperature.

3. The air conditioner according to claim 2, characterized in that, When determining the heat dissipation of the indoor heat source based on the indoor ambient temperature, the area of ​​each infrared light block, and the surface radiation temperature, the controller is specifically configured as follows: Q sum =Q1+Q2+…+Q i +…+Q N ; Among them, Q sum Where N is the heat dissipation of the indoor heat source, and Q is the number of infrared light blocks. i ε represents the heat dissipation of the i-th infrared light block. i Let be the emissivity of the material within the i-th infrared light block, Б be the Stephen-Polhertz constant, and T be... i T is the surface radiation temperature of the i-th infrared light block. indoor S represents the temperature of the indoor environment. i Let be the area of ​​the i-th infrared light block.

4. The air conditioner according to claim 2, characterized in that, After determining the heat dissipation of the indoor heat source based on the indoor ambient temperature, the area of ​​each infrared light block, and the surface radiation temperature, the controller is further configured to: The heat dissipation of the indoor heat source is corrected to obtain the corrected heat dissipation of the indoor heat source.

5. The air conditioner according to claim 4, characterized in that, When correcting the heat dissipation of the indoor heat source, the controller is specifically configured as follows: Multiply the heat dissipation of the indoor heat source by a preset correction factor to obtain the corrected heat dissipation of the indoor heat source.

6. The air conditioner according to claim 2, characterized in that, When determining the surface radiation temperature corresponding to each of the infrared light blocks, the controller is specifically configured as follows: The surface radiation temperature range corresponding to the infrared light block is determined based on the color range where the infrared light block is located; The average temperature corresponding to the surface radiation temperature range is taken as the surface radiation temperature of the corresponding infrared light block.

7. The air conditioner according to claim 6, characterized in that, When determining the surface radiation temperature range corresponding to the infrared light block based on the color range where the infrared light block is located, the controller is specifically configured as follows: Based on the color range where the infrared light block is located, a preset color range-surface radiation temperature range correspondence mapping table is queried to obtain the surface radiation temperature range corresponding to the color range where the infrared light block is located; wherein, the color range-surface radiation temperature range correspondence mapping table contains at least one set of color range-surface radiation temperature range correspondences, and the at least one set of color range-surface radiation temperature range correspondences includes at least the correspondence between the color range and the surface radiation temperature range.

8. The air conditioner according to claim 1, characterized in that, When correcting the target operating frequency of the compressor based on the heat dissipation of the indoor heat source and the output capacity of the compressor, the controller is specifically configured as follows: F obj =F ope +Q sum / P pre ; Among them, F obj For the target operating frequency of the corrected compressor, F ope Q is the target operating frequency of the compressor before correction. sum P represents the heat dissipation of the indoor heat source. pre This represents the output capacity value of the compressor.

9. The air conditioner according to claim 1, characterized in that, When determining the compressor's output capacity value based on the indoor and outdoor ambient temperatures, the controller is specifically configured as follows: Based on the indoor ambient temperature and the outdoor ambient temperature, a preset mapping table of indoor ambient temperature - outdoor ambient temperature - compressor output capacity value is queried to obtain the compressor output capacity value corresponding to the indoor ambient temperature and the outdoor ambient temperature; wherein, the mapping table of indoor ambient temperature - outdoor ambient temperature - compressor output capacity value contains at least one set of correspondences of indoor ambient temperature - outdoor ambient temperature - compressor output capacity value, and the at least one set of correspondences of indoor ambient temperature - outdoor ambient temperature - compressor output capacity value includes at least the correspondence between the indoor ambient temperature, the outdoor ambient temperature and the compressor output capacity value.

10. The air conditioner according to any one of claims 1-9, characterized in that, After correcting the target operating frequency of the compressor based on the heat dissipation of the indoor heat source and the output capacity of the compressor, the controller is further configured to: Determine whether the temperature of the indoor environment has reached the preset temperature range; When it is determined that the indoor temperature has reached the preset temperature range, the compressor is controlled to operate at the current target operating frequency. When it is determined that the indoor temperature has not reached the preset temperature range, the process returns to the step of correcting the target operating frequency of the compressor based on the heat dissipation of the indoor heat source and the output capacity of the compressor, in order to reduce the temperature fluctuation of the indoor environment, until the indoor temperature reaches the preset temperature range.

11. A control method for an air conditioner, characterized in that, For use in an air conditioner as described in any one of claims 1-10, the method comprises the following steps: Acquire indoor and outdoor ambient temperatures and panoramic infrared images; The compressor's output capacity is determined based on the indoor and outdoor ambient temperatures. The heat dissipation of the indoor heat source is determined based on the indoor temperature and the panoramic infrared image. The target operating frequency of the compressor is corrected based on the heat dissipation of the indoor heat source and the output capacity of the compressor in order to reduce the temperature fluctuation of the indoor environment.

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