Air conditioner and control method thereof

Abstract

The invention discloses an air conditioner and a control method thereof.The air conditioner comprises a machine shell, a refrigerant circulation loop, an outdoor heat exchanger, an indoor heat exchanger, an indoor unit, an indoor fan, an indoor motor, an infrared human body detection device and a controller; the current human body cold and heat coefficient, the current set temperature of an indoor unit, the current rotating speed of an indoor motor and the operation mode of the air conditioner are obtained; the set temperature of the indoor unit in the next period and the rotating speed of the indoor motor in the next period are determined; and the set temperature and the air speed of the indoor unit are adjusted according to the set temperature of the next period and the rotating speed of the next period, so that the purpose of automatically adjusting the air outlet temperature and the air outlet speed of the indoor unit according to the cold and warm feeling of a user from user experience in different operation modes of the air conditioner can be achieved, and the comfort degree of the user is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of air conditioners, and in particular to an air conditioner and a control method thereof. Background Art

[0002] When adjusting the indoor temperature, traditional air conditioners usually require users to use an infrared remote control or a mobile terminal APP (Application) to set the temperature and adjust the wind speed. That is, users need to manually adjust the set temperature and wind speed of the air conditioner according to their own degree of cold or heat perception. This adjustment method has a low level of intelligence, and users need to make frequent adjustments when their cold or heat perception changes, which is cumbersome to operate. Summary of the invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the purpose of the present invention is to provide an air conditioner and a control method thereof.

[0004] An air conditioner proposed by the present invention comprises: a casing; a refrigerant circulation loop, which is arranged in the casing, so that the refrigerant circulates in a loop composed of a compressor, a condenser, an expansion valve, an evaporator, a four-way valve and a pressure reducer; an outdoor heat exchanger and an indoor heat exchanger, which are arranged in the casing, wherein one works as the condenser and the other works as the evaporator; an indoor unit, wherein the indoor unit comprises the indoor heat exchanger, and the indoor heat exchanger is used to exchange heat between the refrigerant and the indoor air; an indoor fan, which is arranged in the casing and drives the indoor air to pass through the indoor heat exchanger by rotating so that the refrigerant and the indoor air are exchanged with each other; an indoor motor, which is arranged in the casing and is used to drive the indoor fan; an infrared human body detection device, which is arranged in the casing, and the infrared human body detection device The detection device is used to collect the temperature of indoor personnel and output the corresponding human body heat and cold coefficient according to the temperature of the indoor personnel; the controller is configured to: after determining the first preset time for the compressor to start, obtain the current human body heat and cold coefficient, the current set temperature of the indoor unit, the current speed of the indoor motor and the operating mode of the air conditioner every second preset time; determine the set temperature of the indoor unit in the next cycle according to the current human body heat and cold coefficient, the current set temperature of the indoor unit and the operating mode, and determine the speed of the indoor motor in the next cycle according to the current human body heat and cold coefficient, the current speed of the indoor motor and the operating mode; adjust the set temperature and wind speed of the indoor unit according to the set temperature of the next cycle and the speed of the next cycle.

[0005] In addition, the air conditioner according to the embodiment of the present invention may also have the following additional technical features:

[0006] Furthermore, when determining the set temperature of the indoor unit in the next cycle according to the current human body thermal coefficient, the current set temperature of the indoor unit and the operating mode, the controller is specifically configured to: determine the comfort parameters of the indoor personnel and the change in the set temperature according to the current human body thermal coefficient; determine the set temperature of the indoor unit in the next cycle according to the comfort parameters, the change in the set temperature, the current set temperature of the indoor unit and the operating mode.

[0007] Further, when determining the change in the comfort parameter and the set temperature of the indoor occupant according to the current human body thermal coefficient, the controller is specifically configured to: determine whether the current human body thermal coefficient has changed; when it is determined that the current human body thermal coefficient has not changed, query the human body thermal coefficient-comfort parameter-set temperature change correspondence mapping table according to the previous human body thermal coefficient, and obtain the change in the comfort parameter and the set temperature corresponding to the current human body thermal coefficient; wherein the human body thermal coefficient-comfort parameter-set temperature change correspondence mapping table includes at least one set The correspondence between the human body thermal coefficient-comfort parameter-set temperature change, wherein at least one set of correspondence between the human body thermal coefficient-comfort parameter-set temperature change includes at least the correspondence between the human body thermal coefficient, the comfort parameter and the set temperature change; when it is determined that the current human body thermal coefficient has changed, according to the current human body thermal coefficient, a mapping table of the correspondence between the human body thermal coefficient-comfort parameter-set temperature change is queried to obtain the comfort parameter corresponding to the current human body thermal coefficient, and the set temperature change is determined according to the human body thermal coefficient change.

[0008] Further, when determining the set temperature of the indoor unit in the next cycle based on the comfort parameter, the change in the set temperature, the current set temperature of the indoor unit and the operation mode, the controller is specifically configured as: when the operation mode is cooling, heating or dehumidification mode, and the comfort parameter is a first comfort parameter, taking the difference between the current set temperature of the indoor unit and the change in the set temperature as the set temperature of the indoor unit in the next cycle; when the operation mode is cooling, heating or dehumidification mode, and the comfort parameter is a second comfort parameter, taking the sum of the current set temperature of the indoor unit and the change in the set temperature as the set temperature of the indoor unit in the next cycle, wherein the user perceived temperature corresponding to the second comfort parameter is lower than the user perceived temperature under the first comfort parameter.

[0009] Furthermore, when determining the speed of the indoor motor in the next cycle according to the current human body thermal coefficient, the current speed of the indoor motor and the operating mode, the controller is specifically configured to: judge whether the current human body thermal coefficient satisfies the condition that it has not changed for N1 consecutive times; when it is judged that the current human body thermal coefficient satisfies the condition that it has not changed for N1 consecutive times, determine the speed of the indoor motor in the next cycle according to the comfort parameter, the current speed of the indoor motor and the operating mode; when it is judged that the current human body thermal coefficient does not satisfy the condition that it has not changed for N1 consecutive times, use the current speed of the indoor motor as the speed of the indoor motor in the next cycle.

[0010] Further, when determining the speed of the indoor motor in the next cycle according to the comfort parameter, the current speed of the indoor motor and the operation mode, the controller is specifically configured as: when the operation mode is cooling or dehumidification mode, and the comfort parameter is a first comfort parameter, increasing the current speed of the indoor motor by one gear; when the operation mode is cooling or dehumidification mode, and the comfort parameter is a second comfort parameter, reducing the current speed of the indoor motor by one gear; when the operation mode is heating mode, and the comfort parameter is a first comfort parameter, reducing the current speed of the indoor motor by one gear; when the operation mode is heating mode, and the comfort parameter is a second comfort parameter, increasing the current speed of the indoor motor by one gear.

[0011] Furthermore, before determining the set temperature of the indoor unit in the next cycle according to the current human body heat and cold coefficient, the current set temperature of the indoor unit and the operating mode, and before determining the speed of the indoor motor in the next cycle according to the current human body heat and cold coefficient, the current speed of the indoor motor and the operating mode, the controller is also configured to: filter the human body heat and cold coefficient output by the infrared human body detection device; and use the filtered human body heat and cold coefficient as the current human body heat and cold coefficient.

[0012] Furthermore, when filtering the human body cold and heat coefficient output by the infrared human body detection device, the controller is specifically configured to: obtain N2 consecutive human body cold and heat coefficients; remove the first maximum value and the first minimum value among the N2 human body cold and heat coefficients, take the average value of the remaining human body cold and heat coefficients to obtain a first average value, and determine the filtered human body cold and heat coefficient according to the second maximum value and the second minimum value among the remaining human body cold and heat coefficients.

[0013] Further, when determining the filtered human body heat and cold coefficient based on the second maximum value and the second minimum value of the remaining human body heat and cold coefficients, the controller is specifically configured to: determine whether the second maximum value and the second minimum value exceed the preset heat and cold coefficient range; when it is determined that the second maximum value and the second minimum value exceed the preset heat and cold coefficient range, obtain the next consecutive N2 human body heat and cold coefficients, remove the third maximum value and the third minimum value of the next N2 human body heat and cold coefficients, take the average of the remaining human body heat and cold coefficients to obtain the second average value, and take the average of the first average value and the second average value as the filtered human body heat and cold coefficient; when it is determined that the second maximum value and the second minimum value do not exceed the preset heat and cold coefficient range, take the first average value as the filtered human body heat and cold coefficient.

[0014] According to an air conditioner of an embodiment of the present invention, the air conditioner includes: a casing, a refrigerant circulation loop, an outdoor heat exchanger and an indoor heat exchanger, an indoor unit, an indoor fan, an indoor motor, an infrared human body detection device and a controller. The refrigerant circulation loop is arranged in the casing, so that the refrigerant circulates in a loop composed of a compressor, a condenser, an expansion valve, an evaporator, a four-way valve and a pressure reducer; the outdoor heat exchanger and the indoor heat exchanger are arranged in the casing, wherein one works as a condenser and the other works as an evaporator; the indoor unit includes an indoor heat exchanger, and the indoor unit is used to exchange heat between the refrigerant and the indoor air; the indoor fan is arranged in the casing, and is used to generate an airflow of indoor air passing through the indoor heat exchanger, so that the refrigerant and the indoor air are heat exchanged; the indoor motor is arranged in the casing, and is used to drive the indoor fan; the infrared human body detection device is arranged in the casing, and is used to collect the temperature of the indoor person, and output the corresponding human body cold and heat coefficient according to the temperature of the indoor person; the controller is configured The method is as follows: after determining the first preset time for the compressor to start, the current human body thermal coefficient, the current set temperature of the indoor unit, the current speed of the indoor motor and the operating mode of the air conditioner are obtained every second preset time, and the set temperature of the indoor unit in the next cycle is determined according to the current human body thermal coefficient, the current set temperature of the indoor unit and the operating mode, and the speed of the indoor motor in the next cycle is determined according to the current human body thermal coefficient, the current speed of the indoor motor and the operating mode, and the set temperature and wind speed of the indoor unit are adjusted according to the set temperature of the next cycle and the speed of the next cycle. This can achieve the purpose of automatically adjusting the air outlet temperature and air outlet speed of the indoor unit according to the user experience in different operating modes and the user's feeling of warmth and coldness, thereby improving the user's comfort.

[0015] In response to the above-mentioned problems, the present invention also proposes a control method for an air conditioner, which is used for an air conditioner as described in any of the above-mentioned embodiments, and the method comprises the following steps: after determining the first preset time for the compressor to start, obtaining the current human body thermal coefficient, the current set temperature of the indoor unit, the current speed of the indoor motor and the operating mode of the air conditioner every second preset time; determining the set temperature of the indoor unit in the next cycle according to the current human body thermal coefficient, the current set temperature of the indoor unit and the operating mode, and determining the speed of the indoor motor in the next cycle according to the current human body thermal coefficient, the current speed of the indoor motor and the operating mode; adjusting the set temperature and wind speed of the indoor unit according to the set temperature of the next cycle and the speed of the next cycle.

[0016] According to the control method of the air conditioner of the embodiment of the present invention, after determining the first preset time for the compressor to start, the current human body thermal coefficient, the current set temperature of the indoor unit, the current speed of the indoor motor and the operation mode of the air conditioner are obtained every second preset time, and the set temperature of the indoor unit in the next cycle is determined according to the current human body thermal coefficient, the current set temperature of the indoor unit and the operation mode, and the speed of the indoor motor in the next cycle is determined according to the current human body thermal coefficient, the current speed of the indoor motor and the operation mode, and the set temperature and wind speed of the indoor unit are adjusted according to the set temperature of the next cycle and the speed of the next cycle. The purpose of automatically adjusting the air outlet temperature and the air outlet speed of the indoor unit according to the user experience in different operation modes and the user's cold and warm feelings can be achieved, thereby improving the user's comfort.

[0017] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0019] Figure 1 is a structural schematic diagram of an air conditioner according to an embodiment of the present invention;

[0020] Figure 2 is a flow chart of determining the set temperature of the indoor unit in the next cycle according to the current human body thermal coefficient, the current set temperature of the indoor unit and the operation mode according to one embodiment of the present invention;

[0021] Figure 3 is a flow chart of determining the comfort parameters of indoor personnel and the change amount of the set temperature according to the current human body thermal coefficient according to one embodiment of the present invention;

[0022] Figure 4 is a flow chart of determining the set temperature of the indoor unit in the next cycle according to the comfort parameter, the change amount of the set temperature, the current set temperature of the indoor unit and the operation mode according to one embodiment of the present invention;

[0023] Figure 5 is a flow chart of determining the rotation speed of the indoor motor in the next cycle according to the current human body thermal coefficient, the current rotation speed and the operation mode of the indoor motor according to one embodiment of the present invention;

[0024] Figure 6 is a flow chart of determining the speed of the indoor motor in the next cycle according to the comfort parameter, the current speed of the indoor motor and the operation mode according to one embodiment of the present invention;

[0025] Figure 7 is a flow chart of determining the speed of the indoor motor in the next cycle according to the comfort parameter, the current speed of the indoor motor and the operation mode according to another embodiment of the present invention;

[0026] Figure 8 is a flow chart of using the filtered human body thermal coefficient as the current human body thermal coefficient according to an embodiment of the present invention;

[0027] Fig. 9 is a flow chart of filtering the human body heat and cold coefficient output by an infrared human body detection device according to an embodiment of the present invention;

[0028] Fig.10 is a flow chart of determining a filtered human body thermal coefficient according to a second maximum value and a second minimum value of the remaining human body thermal coefficients according to an embodiment of the present invention;

[0029] Fig.11 is a flow chart of a method for controlling an air conditioner according to an embodiment of the present invention. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] In the description of the present invention, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0032] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0033] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0034] The air conditioner of the present invention performs a refrigeration cycle of the air conditioner 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.

[0035] The compressor compresses the refrigerant gas at high temperature and high pressure and discharges the compressed refrigerant gas. The discharged refrigerant gas flows into the condenser. The condenser condenses the compressed refrigerant into liquid phase, and the heat is released to the surrounding environment through the condensation process.

[0036] The expansion valve expands the high-temperature and high-pressure liquid refrigerant condensed in the condenser into a low-pressure liquid refrigerant. The evaporator evaporates the refrigerant expanded in the expansion valve and returns the refrigerant gas in a low-temperature and low-pressure state to the compressor. The evaporator can achieve a cooling effect by utilizing the latent heat of evaporation of the refrigerant to exchange heat with the material to be cooled. In the entire cycle, the air conditioner can adjust the temperature of the indoor space.

[0037] The outdoor unit of the air conditioner refers to a part of a refrigeration cycle including a compressor and an outdoor heat exchanger, the indoor unit of the air conditioner includes an indoor heat exchanger, and the expansion valve may be provided in the indoor unit or the outdoor unit.

[0038] The indoor heat exchanger and the outdoor heat exchanger function as a condenser or an evaporator. When the indoor heat exchanger functions as a condenser, the air conditioner functions as a heater in a heating mode, and when the indoor heat exchanger functions as an evaporator, the air conditioner functions as a cooler in a cooling mode.

[0039] Reference below Figure 1-Figure 11 An air conditioner and a control method thereof according to an embodiment of the present invention are described.

[0040] Figure 1 FIG. 1 is a schematic diagram of the structure of an air conditioner according to an embodiment of the present invention. Figure 1 As shown, an air conditioner 10 includes: a casing 11, a refrigerant circulation loop 12, an outdoor heat exchanger 13, an indoor heat exchanger 14, an indoor unit 15, an indoor fan 16, an indoor motor 17, an infrared human body detection device 18 and a controller 19. The refrigerant circulation loop 12 is arranged in the casing 11, so that the refrigerant circulates in a loop composed of a compressor, a condenser, an expansion valve, an evaporator, a four-way valve and a pressure reducer; the outdoor heat exchanger 13 and the indoor heat exchanger 14 are arranged in the casing 11, wherein one works as a condenser and the other works as an evaporator; the indoor unit 15 includes an indoor heat exchanger, and the indoor heat exchanger 14 is used to exchange heat between the refrigerant and the indoor air; the indoor fan 16 is arranged in the casing 11, and drives the indoor air to pass through the indoor heat exchanger 14 by rotation, so that the refrigerant and the indoor air are exchanged with heat; the indoor motor 17 is arranged in the casing 11, and is used to drive the indoor fan 16; the infrared human body detection device 18 is arranged in the casing 11, and the infrared human body detection device 1 8 is used to collect the temperature of indoor personnel and output the corresponding human body thermal coefficient according to the temperature of the indoor personnel; the controller 19 is configured to: after determining the first preset time for the compressor to start, obtain the current human body thermal coefficient, the current set temperature of the indoor unit 15, the current speed of the indoor motor 17 and the operation mode of the air conditioner 10 every second preset time; determine the set temperature of the indoor unit 15 in the next cycle according to the current human body thermal coefficient, the current set temperature and the operation mode of the indoor unit 15, and determine the speed of the indoor motor 17 in the next cycle according to the current human body thermal coefficient, the current speed and the operation mode of the indoor motor 17; adjust the set temperature and wind speed of the indoor unit 15 according to the set temperature of the next cycle and the speed of the next cycle.

[0041] Specifically, the human body cold and heat coefficient is used to characterize the cold and warm feeling of indoor personnel. After the compressor is started, it takes a certain amount of time to achieve the balance of internal pressure, temperature and flow. Therefore, after the compressor is started for a first preset time, the embodiment of the present invention periodically obtains the human body cold and heat coefficient output by the infrared human body detection device 18, the current set temperature of the indoor unit 15, the current speed of the indoor motor 17 and the operation mode of the air conditioner 10 to ensure the accuracy of the above data collection. After completing the data collection, the set temperature of the indoor unit 15 in the next cycle is determined according to the collected current human body cold and heat coefficient, the current set temperature of the indoor unit 15 and the operation mode, and the speed of the indoor motor 17 in the next cycle is determined according to the current human body cold and heat coefficient, the current speed of the indoor motor 17 and the operation mode, so as to adjust the set temperature and wind speed of the indoor unit 15 according to the set temperature of the next cycle and the speed of the next cycle. In this way, the purpose of automatically adjusting the outlet air temperature and wind speed of the indoor unit 15 according to the user experience and the user's cold and warm feeling in different operation modes can be achieved, thereby improving the user's comfort. It is understandable that the set temperature of the indoor unit 15 in the next cycle is obtained by changing the current set temperature of the indoor unit 15. The current set temperature corresponding to the first sampling cycle is set by the user. From the second sampling cycle, the temperature set by the user is invalid. Similarly, the speed of the indoor motor 17 in the next cycle is obtained by changing the current speed of the indoor motor 17. The current speed of the indoor motor 17 corresponding to the first sampling cycle is set by the user (the speed is determined by setting the wind speed). From the second sampling cycle, the wind speed set by the user is invalid. Specifically, the user can set the temperature and wind speed through a remote control or a mobile terminal such as a mobile phone, which will not be elaborated here.

[0042] In a specific embodiment, the infrared human body detection device 18 includes an infrared human body sensor, which is used to collect the temperature of indoor personnel, including but not limited to the temperature of the hands and faces of indoor personnel. The infrared human body detection device 18 outputs the corresponding human body cold and heat coefficient according to the temperature of the indoor personnel collected by the infrared human body sensor and the big data algorithm. After the compressor starts for the first preset time, data collection is performed every second preset time. It should be noted that the first preset time and the second preset time can be set in advance according to actual conditions and stored in the controller 19. For example, the first preset time is 10 minutes and the second preset time is 5 minutes. In other embodiments, the infrared human body detection device 18 can output the human body cold and heat coefficient to the controller 19 in real time, but when the compressor is not started, the acquired data is not processed and only saved; when the compressor is started, the data acquired within 10 minutes of cumulative operation is not processed, but only saved. Only when the compressor is started and the accumulated operation is ten minutes, the data acquired every 5 minutes is processed and saved.

[0043] In one embodiment of the present invention, Figure 2 As shown, when determining the set temperature of the indoor unit in the next cycle according to the current human body thermal coefficient, the current set temperature of the indoor unit and the operating mode, the controller is specifically configured as follows: determining the comfort parameters of indoor personnel and the change in the set temperature according to the current human body thermal coefficient; determining the set temperature of the indoor unit in the next cycle according to the comfort parameters, the change in the set temperature, the current set temperature of the indoor unit and the operating mode.

[0044] Specifically, the comfort parameter is the degree of indoor occupants' feeling of cold and heat, including but not limited to "cold", "hot" and "moderate". Different human body cold and heat coefficients correspond to different comfort parameters and different set temperature changes, and the change in the human body cold and heat coefficient is positively correlated with the change in the set temperature. The indoor occupants' comfort parameters and the set temperature change are determined based on the current human body cold and heat coefficient, and the set temperature of the indoor unit in the next cycle is determined based on the comfort parameters, the set temperature change, the current set temperature of the indoor unit and the operating mode. The air conditioner can be operated in different modes, starting from the user experience, and reasonably adjusting the indoor temperature according to the user's cold and heat feelings, so as to achieve the effect of making the user comfortable.

[0045] In one embodiment of the present invention, Figure 3 As shown, when determining the change amount of the comfort parameter and the set temperature of the indoor occupants according to the current human body heat and cold coefficient, the controller is specifically configured to: determine whether the current human body heat and cold coefficient has changed; when it is determined that the current human body heat and cold coefficient has not changed, query the human body heat and cold coefficient-comfort parameter-set temperature change amount correspondence mapping table according to the current human body heat and cold coefficient, and obtain the comfort parameter and set temperature change amount corresponding to the current human body heat and cold coefficient; wherein the human body heat and cold coefficient-comfort parameter-set temperature change amount correspondence mapping table contains at least one set of human body heat and cold coefficient-comfort parameter-set temperature change amount correspondence relationship, and at least one set of human body heat and cold coefficient-comfort parameter-set temperature change amount correspondence relationship includes at least the correspondence relationship between the human body heat and cold coefficient, the comfort parameter and the set temperature change amount; when it is determined that the current human body heat and cold coefficient has changed, query the human body heat and cold coefficient-comfort parameter-set temperature change amount correspondence mapping table according to the current human body heat and cold coefficient, obtain the comfort parameter corresponding to the current human body heat and cold coefficient, and determine the set temperature change amount according to the human body heat and cold coefficient change amount.

[0046] Specifically, the human body thermal coefficient-comfort parameter-set temperature change correspondence mapping table is obtained by experimental calibration and pre-stored in the controller. As mentioned above, different human body thermal coefficients correspond to different comfort parameters and different set temperature changes. The change in the human body thermal coefficient is positively correlated with the change in the set temperature. The greater the change in the human body thermal coefficient, the greater the change in the set temperature, and vice versa. The embodiment of the present invention determines the change in the comfort parameter and the set temperature of the indoor occupant based on the current human body thermal coefficient, so as to determine the set temperature of the indoor unit in the next cycle based on the change in the set temperature and the current set temperature, the comfort parameter and the operating mode.

[0047] Specifically, after obtaining the current human body heat and cold coefficient, if the current human body heat and cold coefficient has not changed, by querying the human body heat and cold coefficient-comfort parameter-set temperature change correspondence mapping table, the comfort parameter corresponding to the current human body heat and cold coefficient and the change in the set temperature can be directly obtained; if the human body heat and cold coefficient changes, by querying the human body heat and cold coefficient-comfort parameter-set temperature change correspondence mapping table, the comfort parameter corresponding to the current human body heat and cold coefficient can be obtained, and then the change in the set temperature is determined according to the change in the human body heat and cold coefficient. It can be understood that when determining the change in the set temperature according to the change in the human body heat and cold coefficient, the preset human body heat and cold coefficient change-set temperature change correspondence mapping table can be queried according to the change in the human body heat and cold coefficient to obtain the change in the set temperature corresponding to the change in the human body heat and cold coefficient, which will not be elaborated here.

[0048] In a specific embodiment, the human body cold and heat coefficient-comfort parameter-set temperature change correspondence mapping table is shown in Table 1. The human body cold and heat coefficient includes three types: 0, 1, and 2. The corresponding comfort parameters are "cold", "moderate", and "hot", and the corresponding set temperature changes are "1°C", "0°C", and "-1°C". The change of the human body cold and heat coefficient-the change of the set temperature is shown in Table 2. If the current human body cold and heat coefficient is 2, and compared with the previous cycle, the human body cold and heat coefficient has not changed, then by querying Table 1, it can be obtained that the comfort parameter corresponding to the current human body cold and heat coefficient is "hot", and the change of the set temperature corresponding to the current human body cold and heat coefficient is -1°C. If the current human body cold and heat coefficient is 0, and compared with the previous cycle, the human body cold and heat coefficient has changed, and the change of the human body cold and heat coefficient is, for example, 2, then by querying Table 1, it can be obtained that the comfort parameter corresponding to the current human body cold and heat coefficient is "cold", and by querying Table 2, it can be obtained that the change of the set temperature corresponding to the change of the human body cold and heat coefficient is 2°C, that is, the air conditioning temperature is reduced by 2°C.

[0049]

[0050]

[0051] Table 1

[0052] Changes in the human body's thermal coefficient Set temperature change 1 1℃ 2 2℃

[0053] Table 2

[0054] In one embodiment of the present invention, Figure 4 As shown, when determining the set temperature of the indoor unit in the next cycle according to the comfort parameter, the change in the set temperature, the current set temperature of the indoor unit and the operation mode, the controller is specifically configured as follows: when the operation mode is cooling, heating or dehumidification mode, and the comfort parameter is a first comfort parameter, the difference between the current set temperature of the indoor unit and the change in the set temperature is used as the set temperature of the indoor unit in the next cycle; when the operation mode is cooling, heating or dehumidification mode, and the comfort parameter is a second comfort parameter, the sum of the current set temperature of the indoor unit and the change in the set temperature is used as the set temperature of the indoor unit in the next cycle, wherein the user perceived temperature corresponding to the second comfort parameter is lower than the user perceived temperature under the first comfort parameter.

[0055] Specifically, the user's perceived temperature under the second comfort parameter is lower than the user's perceived temperature under the first comfort parameter, the second comfort parameter is, for example, "cold", and the first comfort parameter is, for example, "hot". When the operation mode of the air conditioner is cooling, heating or dehumidification mode, and the comfort parameter is the first comfort parameter, it is considered that the user feels "hot", and the set temperature of the indoor unit needs to be lowered, so that the indoor temperature gradually decreases by lowering the set temperature of the indoor unit so that the user no longer feels "hot". The difference between the current set temperature of the indoor unit and the change in the set temperature is used as the set temperature of the indoor unit in the next cycle; when the operation mode of the air conditioner is cooling, heating or dehumidification mode, and the comfort parameter is the second comfort parameter, it is considered that the user feels "cold", and the set temperature of the indoor unit needs to be increased, so that the indoor temperature gradually increases by increasing the set temperature of the indoor unit so that the user no longer feels "cold". The sum of the current set temperature of the indoor unit and the change in the set temperature is used as the set temperature of the indoor unit in the next cycle to automatically improve the user's comfort in cooling, heating or dehumidification mode.

[0056] It can be understood that since the embodiment of the present invention can periodically obtain the current human body cold and heat coefficient, the current set temperature of the indoor unit and the operating mode of the air conditioner, the set temperature of the indoor unit can be periodically determined according to the comfort parameters, the change in the set temperature, the current set temperature of the indoor unit and the operating mode, that is, the set temperature of the indoor unit is continuously adjusted until the user feels "moderate", and then the adjustment of the set temperature of the indoor unit is stopped, thereby improving the user's comfort.

[0057] In one embodiment of the present invention, Figure 5 As shown, when determining the speed of the indoor motor in the next cycle according to the current human body thermal coefficient, the current speed of the indoor motor and the operating mode, the controller is specifically configured to: determine whether the current human body thermal coefficient satisfies the condition that it has not changed for N1 consecutive times; when it is determined that the current human body thermal coefficient satisfies the condition that it has not changed for N1 consecutive times, determine the speed of the indoor motor in the next cycle according to the comfort parameters, the current speed of the indoor motor and the operating mode; when it is determined that the current human body thermal coefficient does not satisfy the condition that it has not changed for N1 consecutive times, use the current speed of the indoor motor as the speed of the indoor motor in the next cycle.

[0058] Specifically, since the current human body cold and heat coefficient obtained may have errors, resulting in errors in the obtained comfort parameters, in order to improve the accuracy of the comfort parameters and avoid frequent adjustment of the speed of the indoor motor, the embodiment of the present invention determines whether to adjust the speed of the indoor motor in the next cycle according to whether the human body cold and heat coefficient meets the condition that it has not changed for N1 consecutive times. Specifically, when it is judged that the current human body cold and heat coefficient meets the condition that it has not changed for N1 consecutive times, it is considered that there is no error in the current human body cold and heat coefficient, or the user may continue to feel "cold" or "hot". At this time, the speed of the indoor motor in the next cycle is determined according to the comfort parameters, the current speed of the indoor motor and the operating mode. When it is judged that the current human body cold and heat coefficient does not meet the condition that it has not changed for N1 consecutive times, it is considered that there is an error in the current human body cold and heat coefficient, or the user's feelings are changing. At this time, there is no need to adjust the wind speed immediately. At this time, the current speed of the indoor motor is used as the speed of the indoor motor in the next cycle, that is, the speed of the indoor motor is not adjusted.

[0059] In a specific embodiment, when the human body's cold and hot coefficient has not changed for N1 consecutive times, for example, 3 times, it is considered that the user may continue to feel "cold" or "hot". At this time, the speed of the indoor motor in the next cycle is determined based on the comfort parameters, the current speed of the indoor motor and the operating mode.

[0060] In one embodiment of the present invention, Figure 6 and Figure 7As shown, when determining the speed of the indoor motor in the next cycle according to the comfort parameter, the current speed of the indoor motor and the operation mode, the controller is specifically configured as follows: when the operation mode is cooling or dehumidification mode, and the comfort parameter is the first comfort parameter, the current speed of the indoor motor is increased by one gear; when the operation mode is cooling or dehumidification mode, and the comfort parameter is the second comfort parameter, the current speed of the indoor motor is reduced by one gear; when the operation mode is heating mode, and the comfort parameter is the first comfort parameter, the current speed of the indoor motor is reduced by one gear; when the operation mode is heating mode, and the comfort parameter is the second comfort parameter, the current speed of the indoor motor is increased by one gear.

[0061] Specifically, the user's perceived temperature under the second comfort parameter is lower than the user's perceived temperature under the first comfort parameter. The second comfort parameter is, for example, "cold" and the first comfort parameter is, for example, "hot". Then, when the human body's cold and hot coefficient has not changed for N1 consecutive times and the air conditioner's operating mode is cooling or dehumidification mode, and the comfort parameter is the first comfort parameter, it is considered that the user feels "hot", and the speed of the indoor fan needs to be increased to increase the air outlet speed of the indoor unit to quickly reduce the indoor temperature so that the user no longer feels "hot". For example, the current speed of the indoor motor is increased by one gear; when the air conditioner's operating mode is cooling or dehumidification mode, and the comfort parameter is the second comfort parameter, it is considered that the user feels "cold", and the speed of the indoor fan needs to be reduced to reduce the air outlet speed of the indoor unit to slowly reduce the indoor temperature. For example, the current speed of the indoor motor is reduced by one gear to automatically improve the user's comfort in cooling or dehumidification mode.

[0062] In other embodiments, when the operating mode of the air conditioner is the heating mode and the comfort parameter is the first comfort parameter, it is considered that the user feels "hot", and the speed of the indoor fan needs to be reduced to reduce the air outlet speed of the indoor unit to slowly increase the indoor temperature. For example, the current speed of the indoor motor is reduced by one gear; when the operating mode of the air conditioner is the heating mode and the comfort parameter is the second comfort parameter, it is considered that the user feels "cold", and the speed of the indoor fan needs to be increased to increase the air outlet speed of the indoor unit to quickly increase the indoor temperature. For example, the current speed of the indoor motor is increased by one gear to automatically improve the user's comfort in the heating mode.

[0063] In a specific embodiment, when the human body's thermal coefficient has not changed for N1 consecutive times, for example, 3 times, and the operating mode is cooling or dehumidification mode, and the comfort parameter is the second comfort parameter, for example, "hot", the current speed of the indoor motor is increased by one gear.

[0064] In one embodiment of the present invention, Figure 8As shown, before determining the set temperature of the indoor unit in the next cycle according to the current human body heat and cold coefficient, the current set temperature of the indoor unit and the operating mode, and before determining the speed of the indoor motor in the next cycle according to the current human body heat and cold coefficient, the current speed of the indoor motor and the operating mode, the controller is also configured to: filter the human body heat and cold coefficient output by the infrared human body detection device; and use the filtered human body heat and cold coefficient as the current human body heat and cold coefficient.

[0065] Specifically, the human body heat and cold coefficient output by the infrared human body detection device may contain invalid data or abnormal data, such as data that obviously exceeds human body temperature or a human body heat and cold coefficient that exceeds the range of the human body heat and cold coefficient. In order to avoid the above parameters causing controller parameter fluctuations, it is necessary to filter the human body heat and cold coefficient output by the infrared human body detection device, and use the filtered human body heat and cold coefficient as the current human body heat and cold coefficient to improve the accuracy of the human body heat and cold coefficient and enhance the anti-interference ability of the air conditioner.

[0066] In one embodiment of the present invention, Fig. 9 As shown, when filtering the human body heat and cold coefficient output by the infrared human body detection device, the controller is specifically configured to: obtain N2 consecutive human body heat and cold coefficients; remove the first maximum value and the first minimum value of the N2 human body heat and cold coefficients, take the average value of the remaining human body heat and cold coefficients to obtain the first average value, and determine the filtered human body heat and cold coefficient according to the second maximum value and the second minimum value of the remaining human body heat and cold coefficients.

[0067] Specifically, in order to avoid the situation where the human body heat coefficient output by the infrared human body detection device has data exceeding the human body temperature or exceeding the human body heat coefficient range, by obtaining N2 consecutive human body heat coefficients, the N2 human body heat coefficients are sorted according to the data size, the maximum and minimum values ​​of the N2 human body heat coefficients are removed, and the remaining human body heat coefficients are averaged to obtain a relatively stable and accurate human body heat coefficient. Considering that the maximum and minimum values ​​of the remaining human body heat coefficients may still contain abnormal data, therefore, in order to continue to enhance the resistance to abnormal data and interference and ensure that the human body heat coefficient finally obtained is reliable and stable, it is necessary to determine the filtered human body heat coefficient according to the second maximum and second minimum values ​​of the remaining human body heat coefficients.

[0068] In one embodiment of the present invention, Fig.10As shown, when determining the filtered human body heat and cold coefficient according to the second maximum value and the second minimum value in the remaining human body heat and cold coefficients, the controller is specifically configured to: determine whether the second maximum value and the second minimum value exceed the preset heat and cold coefficient range; when it is determined that the second maximum value and the second minimum value exceed the preset heat and cold coefficient range, obtain the next consecutive N2 human body heat and cold coefficients, remove the third maximum value and the third minimum value in the next N2 human body heat and cold coefficients, take the average value of the remaining human body heat and cold coefficients to obtain the second average value, and take the average of the first average value and the second average value as the filtered human body heat and cold coefficient; when it is determined that the second maximum value and the second minimum value do not exceed the preset heat and cold coefficient range, take the first average value as the filtered human body heat and cold coefficient.

[0069] Specifically, the range of the cold and hot coefficient is the range of normal output of the cold and hot coefficient preset in the controller. When the second maximum value and the second minimum value exceed the preset range of the cold and hot coefficient, it indicates that the error of the current human body cold and hot coefficient obtained by the above embodiment is large. In order to ensure the reliability and accuracy of the data, it is necessary to filter the next N2 consecutive human body cold and hot coefficients to obtain the second average value, and take the average of the first average value and the second average value as the filtered human body cold and hot coefficient, thereby ensuring the reliability and accuracy of the final result. When it is judged that the second maximum value and the second minimum value do not exceed the preset range of the cold and hot coefficient, it indicates that the current data obtained by the above embodiment is highly reliable, and the first average value can be used as the filtered human body cold and hot coefficient to adjust the air conditioner.

[0070] According to an air conditioner of an embodiment of the present invention, the air conditioner includes: a casing, a refrigerant circulation loop, an outdoor heat exchanger and an indoor heat exchanger, an indoor unit, an indoor fan, an indoor motor, an infrared human body detection device and a controller. Among them, the refrigerant circulation loop is arranged in the casing, so that the refrigerant circulates in the loop composed of a compressor, a condenser, an expansion valve, an evaporator, a four-way valve and a pressure reducer; the outdoor heat exchanger and the indoor heat exchanger are arranged in the casing, wherein one works as a condenser and the other works as an evaporator; the indoor unit includes an indoor heat exchanger, and the indoor heat exchanger is used to exchange heat between the refrigerant and the indoor air; the indoor fan is arranged in the casing, and drives the indoor air through the indoor heat exchanger by rotation, so that the refrigerant and the indoor air are exchanged heat; the indoor motor is arranged in the casing, and is used to drive the indoor fan; the infrared human body detection device is arranged in the casing, and the infrared human body detection device is used to collect the temperature of the indoor person, and output the corresponding human body cold and heat coefficient according to the temperature of the indoor person; the controller is equipped with Set as follows: after determining the first preset time for the compressor to start, every second preset time, obtain the current human body thermal coefficient, the current set temperature of the indoor unit, the current speed of the indoor motor and the operating mode of the air conditioner, determine the set temperature of the indoor unit in the next cycle according to the current human body thermal coefficient, the current set temperature of the indoor unit and the operating mode, and determine the speed of the indoor motor in the next cycle according to the current human body thermal coefficient, the current speed of the indoor motor and the operating mode, adjust the set temperature and wind speed of the indoor unit according to the set temperature of the next cycle and the speed of the next cycle, so as to achieve the purpose of automatically adjusting the air outlet temperature and air outlet speed of the indoor unit according to the user experience in different operating modes and the user's cold and warm feelings, thereby improving the user's comfort.

[0071] A further embodiment of the present invention also discloses a method for controlling an air conditioner, such as Fig.11 As shown, the method comprises the following steps:

[0072] Step S1: after determining the first preset time for the compressor to start, the current human body heat and cold coefficient, the current set temperature of the indoor unit, the current speed of the indoor motor and the operation mode of the air conditioner are obtained every second preset time.

[0073] Step S2: Determine the set temperature of the indoor unit in the next cycle according to the current human body thermal coefficient, the current set temperature of the indoor unit and the operating mode, and determine the speed of the indoor motor in the next cycle according to the current human body thermal coefficient, the current speed of the indoor motor and the operating mode.

[0074] Step S3: adjusting the set temperature and wind speed of the indoor unit according to the set temperature of the next cycle and the rotation speed of the next cycle.

[0075] In one embodiment of the present invention, when determining the set temperature of the indoor unit in the next cycle according to the current human body thermal coefficient, the current set temperature of the indoor unit and the operating mode, it includes: determining the comfort parameters of indoor personnel and the change in the set temperature according to the current human body thermal coefficient; determining the set temperature of the indoor unit in the next cycle according to the comfort parameters, the change in the set temperature, the current set temperature of the indoor unit and the operating mode.

[0076] In one embodiment of the present invention, the comfort parameter and the change amount of the set temperature of the indoor occupants are determined according to the current human body heat and cold coefficient, including: judging whether the current human body heat and cold coefficient has changed; when judging that the current human body heat and cold coefficient has not changed, querying the human body heat and cold coefficient-comfort parameter-set temperature change amount correspondence mapping table according to the previous human body heat and cold coefficient, and obtaining the comfort parameter and the change amount of the set temperature corresponding to the current human body heat and cold coefficient; wherein the human body heat and cold coefficient-comfort parameter-set temperature change amount correspondence mapping table contains at least one set of human body heat and cold coefficient-comfort parameter-set temperature change amount correspondence, and at least one set of human body heat and cold coefficient-comfort parameter-set temperature change amount correspondence includes at least one set of human body heat and cold coefficient-comfort parameter-set temperature change amount correspondence between the human body heat and cold coefficient, the comfort parameter and the set temperature change amount; when judging that the current human body heat and cold coefficient has changed, querying the human body heat and cold coefficient-comfort parameter-set temperature change amount correspondence mapping table according to the previous human body heat and cold coefficient, and obtaining the comfort parameter corresponding to the current human body heat and cold coefficient, and determining the set temperature change amount according to the human body heat and cold coefficient change amount.

[0077] In one embodiment of the present invention, the set temperature of the indoor unit in the next cycle is determined according to the comfort parameter, the change in the set temperature, the current set temperature of the indoor unit and the operation mode, including: when the operation mode is cooling, heating or dehumidification mode, and the comfort parameter is a first comfort parameter, the difference between the current set temperature of the indoor unit and the change in the set temperature is used as the set temperature of the indoor unit in the next cycle; when the operation mode is cooling, heating or dehumidification mode, and the comfort parameter is a second comfort parameter, the sum of the current set temperature of the indoor unit and the change in the set temperature is used as the set temperature of the indoor unit in the next cycle, wherein the user perceived temperature corresponding to the second comfort parameter is lower than the user perceived temperature under the first comfort parameter.

[0078] In one embodiment of the present invention, the speed of the indoor motor in the next cycle is determined according to the current human body thermal coefficient, the current speed of the indoor motor and the operating mode, including: judging whether the current human body thermal coefficient satisfies the condition that it has not changed for N1 consecutive times; when judging that the current human body thermal coefficient satisfies the condition that it has not changed for N1 consecutive times, determining the speed of the indoor motor in the next cycle according to the comfort parameter, the current speed of the indoor motor and the operating mode; when judging that the current human body thermal coefficient does not satisfy the condition that it has not changed for N1 consecutive times, using the current speed of the indoor motor as the speed of the indoor motor in the next cycle.

[0079] In one embodiment of the present invention, the speed of the indoor motor in the next cycle is determined according to the comfort parameter, the current speed of the indoor motor and the operation mode, including: when the operation mode is cooling or dehumidification mode, and the comfort parameter is a first comfort parameter, the current speed of the indoor motor is increased by one gear; when the operation mode is cooling or dehumidification mode, and the comfort parameter is a second comfort parameter, the current speed of the indoor motor is reduced by one gear; when the operation mode is heating mode, and the comfort parameter is a first comfort parameter, the current speed of the indoor motor is reduced by one gear; when the operation mode is heating mode, and the comfort parameter is a second comfort parameter, the current speed of the indoor motor is increased by one gear.

[0080] In one embodiment of the present invention, before determining the set temperature of the indoor unit in the next cycle according to the current human body heat and cold coefficient, the current set temperature of the indoor unit and the operating mode, and before determining the speed of the indoor motor in the next cycle according to the current human body heat and cold coefficient, the current speed of the indoor motor and the operating mode, it includes: filtering the human body heat and cold coefficient output by the infrared human body detection device; and using the filtered human body heat and cold coefficient as the current human body heat and cold coefficient.

[0081] In one embodiment of the present invention, the human body heat and cold coefficient output by the infrared human body detection device is filtered, including: obtaining N2 consecutive human body heat and cold coefficients; removing the first maximum value and the first minimum value of the N2 human body heat and cold coefficients, averaging the remaining human body heat and cold coefficients to obtain a first average value, and determining the filtered human body heat and cold coefficient according to the second maximum value and the second minimum value of the remaining human body heat and cold coefficients.

[0082] In one embodiment of the present invention, the filtered human body heat and cold coefficient is determined based on the second maximum value and the second minimum value in the remaining human body heat and cold coefficients, including: judging whether the second maximum value and the second minimum value exceed the preset heat and cold coefficient range; when judging that the second maximum value and the second minimum value exceed the preset heat and cold coefficient range, obtaining the next consecutive N2 human body heat and cold coefficients, removing the third maximum value and the third minimum value in the next N2 human body heat and cold coefficients, averaging the remaining human body heat and cold coefficients to obtain the second average value, and averaging the first average value and the second average value as the filtered human body heat and cold coefficient; when judging that the second maximum value and the second minimum value do not exceed the preset heat and cold coefficient range, taking the first average value as the filtered human body heat and cold coefficient.

[0083] According to the control method of the air conditioner of the embodiment of the present invention, after determining the first preset time for the compressor to start, the current human body thermal coefficient, the current set temperature of the indoor unit, the current speed of the indoor motor and the operation mode of the air conditioner are obtained every second preset time, and the set temperature of the indoor unit in the next cycle is determined according to the current human body thermal coefficient, the current set temperature of the indoor unit and the operation mode, and the speed of the indoor motor in the next cycle is determined according to the current human body thermal coefficient, the current speed of the indoor motor and the operation mode, and the set temperature and wind speed of the indoor unit are adjusted according to the set temperature of the next cycle and the speed of the next cycle. The purpose of automatically adjusting the air outlet temperature and the air outlet speed of the indoor unit according to the user experience in different operation modes and the user's cold and warm feelings can be achieved, thereby improving the user's comfort.

[0084] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example.

[0085] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. An air conditioner, characterized in that: include: chassis; A refrigerant circulation loop is arranged in the casing, so that the refrigerant circulates in a loop composed of a compressor, a condenser, an expansion valve, an evaporator, a four-way valve and a pressure reducer; an outdoor heat exchanger and an indoor heat exchanger, disposed in the housing, wherein one works as the condenser and the other works as the evaporator; An indoor unit, the indoor unit comprising the indoor heat exchanger, the indoor heat exchanger being used to perform heat exchange between the refrigerant and indoor air; An indoor fan is disposed in the casing and drives the indoor air to pass through the indoor heat exchanger by rotating so that the refrigerant and the indoor air perform heat exchange; An indoor motor, disposed in the housing, for driving the indoor fan; An infrared human body detection device is arranged in the housing, and is used to collect the temperature of indoor people and output a corresponding human body heat and cold coefficient according to the temperature of the indoor people; A controller, wherein the controller is configured to: after determining that the compressor is started for a first preset time, obtain a current human body heat and cold coefficient, a current set temperature of the indoor unit, a current speed of the indoor motor, and an operation mode of the air conditioner at every second preset time; Determine the set temperature of the indoor unit in the next cycle according to the current human body thermal coefficient, the current set temperature of the indoor unit and the operation mode, and determine the speed of the indoor motor in the next cycle according to the current human body thermal coefficient, the current speed of the indoor motor and the operation mode; The set temperature and wind speed of the indoor unit are adjusted according to the set temperature of the next cycle and the rotation speed of the next cycle.

2. The air conditioner according to claim 1, characterized in that: When determining the set temperature of the indoor unit in the next cycle according to the current human body thermal coefficient, the current set temperature of the indoor unit and the operation mode, the controller is specifically configured as follows: Determine the comfort parameter of the indoor occupants and the change amount of the set temperature according to the current human body thermal coefficient; The set temperature of the indoor unit in the next cycle is determined according to the comfort parameter, the change amount of the set temperature, the current set temperature of the indoor unit and the operation mode.

3. The air conditioner according to claim 2, characterized in that: When determining the comfort parameter of the indoor occupants and the change in the set temperature according to the current human body thermal coefficient, the controller is specifically configured as follows: Determining whether the current human body thermal coefficient has changed; When it is determined that the current human body heat and cold coefficient has not changed, according to the previous human body heat and cold coefficient, the human body heat and cold coefficient-comfort parameter-set temperature change amount correspondence mapping table is queried to obtain the comfort parameter and the set temperature change amount corresponding to the current human body heat and cold coefficient; wherein the human body heat and cold coefficient-comfort parameter-set temperature change amount correspondence mapping table contains at least one set of human body heat and cold coefficient-comfort parameter-set temperature change amount correspondence relationship, and the at least one set of human body heat and cold coefficient-comfort parameter-set temperature change amount correspondence relationship includes at least the human body heat and cold coefficient, the comfort parameter and the set temperature change amount correspondence relationship between the corresponding relationship; When it is determined that the current human body thermal coefficient has changed, the human body thermal coefficient-comfort parameter-set temperature change correspondence mapping table is queried according to the current human body thermal coefficient, the comfort parameter corresponding to the current human body thermal coefficient is obtained, and the set temperature change is determined according to the human body thermal coefficient change.

4. The air conditioner according to claim 2, characterized in that: When determining the set temperature of the indoor unit in the next cycle according to the comfort parameter, the change amount of the set temperature, the current set temperature of the indoor unit and the operation mode, the controller is specifically configured as follows: When the operation mode is cooling, heating or dehumidification mode, and the comfort parameter is the first comfort parameter, the difference between the current set temperature of the indoor unit and the change amount of the set temperature is used as the set temperature of the indoor unit in the next cycle; When the operating mode is cooling, heating or dehumidification mode, and the comfort parameter is a second comfort parameter, the sum of the current set temperature of the indoor unit and the change in the set temperature is used as the set temperature of the indoor unit in the next cycle, wherein the user perceived temperature corresponding to the second comfort parameter is lower than the user perceived temperature under the first comfort parameter.

5. The air conditioner according to claim 2, characterized in that: When determining the speed of the indoor motor in the next cycle according to the current human body thermal coefficient, the current speed of the indoor motor and the operation mode, the controller is specifically configured as follows: Determine whether the current human body thermal coefficient meets the condition of not changing for N1 consecutive times; When it is determined that the current human body thermal coefficient meets the condition that it has not changed for N1 consecutive times, determining the speed of the indoor motor in the next cycle according to the comfort parameter, the current speed of the indoor motor and the operation mode; When it is determined that the current human body thermal coefficient does not satisfy the condition of not changing for N1 consecutive times, the current rotation speed of the indoor motor is used as the rotation speed of the indoor motor in the next cycle.

6. The air conditioner according to claim 5, characterized in that: When determining the speed of the indoor motor in the next cycle according to the comfort parameter, the current speed of the indoor motor and the operation mode, the controller is specifically configured as follows: When the operation mode is a cooling or dehumidification mode, and the comfort parameter is a first comfort parameter, increasing the current speed of the indoor motor by one gear; When the operation mode is a cooling or dehumidification mode, and the comfort parameter is a second comfort parameter, reducing the current speed of the indoor motor by one gear; When the operation mode is the heating mode and the comfort parameter is the first comfort parameter, reducing the current speed of the indoor motor by one gear; When the operation mode is the heating mode and the comfort parameter is the second comfort parameter, the current rotation speed of the indoor motor is increased by one gear.

7. The air conditioner according to claim 1, characterized in that: Before determining the set temperature of the indoor unit in the next cycle according to the current human body thermal coefficient, the current set temperature of the indoor unit and the operation mode, and determining the speed of the indoor motor in the next cycle according to the current human body thermal coefficient, the current speed of the indoor motor and the operation mode, the controller is further configured as follows: Performing filtering processing on the human body cold and hot coefficient output by the infrared human body detection device; The filtered human body thermal coefficient is used as the current human body thermal coefficient.

8. The air conditioner according to claim 7, characterized in that: When filtering the human body thermal coefficient output by the infrared human body detection device, the controller is specifically configured as follows: Obtaining N2 consecutive human body thermal coefficients; Remove the first maximum value and the first minimum value of the N2 human body cold and heat coefficients, take the average of the remaining human body cold and heat coefficients to obtain a first average value, and determine the filtered human body cold and heat coefficient according to the second maximum value and the second minimum value of the remaining human body cold and heat coefficients.

9. The air conditioner according to claim 8, characterized in that: When determining the filtered human body thermal coefficient according to the second maximum value and the second minimum value of the remaining human body thermal coefficient, the controller is specifically configured as follows: Determining whether the second maximum value and the second minimum value exceed a preset range of cold and hot coefficients; When it is determined that the second maximum value and the second minimum value exceed the preset range of the cold and hot coefficients, the next N2 consecutive human body cold and hot coefficients are obtained, the third maximum value and the third minimum value among the next N2 human body cold and hot coefficients are removed, and the remaining human body cold and hot coefficients are averaged to obtain a second average value, and the average of the first average value and the second average value is used as the filtered human body cold and hot coefficient; When it is determined that the second maximum value and the second minimum value do not exceed the preset range of the cold and hot coefficient, the first average value is used as the filtered human body cold and hot coefficient.

10. A method for controlling an air conditioner, characterized in that: For the air conditioner according to any one of claims 1 to 9, the method comprises the following steps: After determining the first preset time for the compressor to start, obtaining the current human body heat and cold coefficient, the current set temperature of the indoor unit, the current speed of the indoor motor and the operation mode of the air conditioner at every second preset time; Determine the set temperature of the indoor unit in the next cycle according to the current human body thermal coefficient, the current set temperature of the indoor unit and the operation mode, and determine the speed of the indoor motor in the next cycle according to the current human body thermal coefficient, the current speed of the indoor motor and the operation mode; The set temperature and wind speed of the indoor unit are adjusted according to the set temperature of the next cycle and the rotation speed of the next cycle.

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