Air conditioner

Abstract

The invention provides an air conditioner which comprises a compressor, an indoor fan, an exhaust temperature sensor, an air suction temperature sensor, an indoor coil pipe temperature sensor, an indoor air environment sensor and a controller. The controller is configured to obtain the target operation frequency, the target suction temperature and the target exhaust temperature of the compressor and the rotating speed of the indoor fan in the current operation mode; the target indoor coil pipe temperature and the target indoor environment temperature are determined according to the parameters; determining a heat transfer coefficient of the air conditioner according to the rotating speed, the target operating frequency and the target indoor environment temperature; and according to the heat transfer coefficient, the target indoor environment temperature and the target indoor coil pipe temperature, the refrigerating capacity or the heating capacity of the air conditioner in the current operation mode is determined, the real-time capacity of the air conditioner is calculated according to the operation state parameters of the air conditioner and the indoor and outdoor environment parameters, and capacity calculation of the air conditioner is more convenient and accurate; and additional devices are not needed, so that the occupied space of the air conditioner is reduced, and the cost is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of air conditioning, and in particular to an air conditioner. Background Art

[0002] With the development of the economy, users have higher and higher requirements for air conditioners. For users with lower requirements, they may only pay attention to whether the air conditioning system can cool or heat, whether the air outlet temperature meets the requirements, and whether the reliability can meet the requirements. For users with higher requirements, on the basis of the above requirements, they may also increase their requirements on the cooling capacity of the current air conditioning system and whether it is consistent with the nominal parameters on the product nameplate.

[0003] At present, the air conditioner can add temperature detection devices and pressure detection devices at the inlet and outlet of the indoor motor evaporator to detect the air enthalpy and air volume at the inlet and outlet of the evaporator, so as to calculate the capacity of the air conditioner; or detect the exhaust temperature, intake temperature, air supply port temperature, etc. of the air conditioner to determine the exhaust enthalpy value, intake enthalpy value, lubricating oil enthalpy value, etc., and comprehensively calculate the air conditioner capacity through the enthalpy difference method and correction.

[0004] However, the above method requires adding additional devices to the air conditioner, which occupies the internal space of the air conditioner, and the device structure is complex, resulting in a high cost of the air conditioner. In addition, the accuracy of determining the enthalpy value only by the temperature value is not high, which affects the accuracy of the air conditioner's capacity. Summary of the invention

[0005] The present invention aims to solve at least one of the technical problems existing in the prior art.

[0006] To this end, one object of the present invention is to propose an air conditioner, which calculates the real-time capacity of the air conditioner based on the operating status parameters of the air conditioner and the indoor and outdoor environmental parameters, so that the capacity calculation of the air conditioner is more convenient and accurate, and there is no need to add additional devices, thereby reducing the space occupied by the air conditioner and reducing costs.

[0007] In order to achieve the above-mentioned purpose, an embodiment of the first aspect of the present invention provides an air conditioner, which includes: a compressor, which is used to compress low-temperature and low-pressure refrigerant gas into high-temperature and high-pressure refrigerant gas and discharge it to a condenser; an indoor fan, which is used to drive indoor air to exchange heat with an indoor heat exchanger and then send it out from an air outlet; an exhaust temperature sensor, which is used to detect the exhaust temperature of the compressor; an intake temperature sensor, which is used to detect the intake temperature of the compressor; an indoor coil temperature sensor, which is used to detect the indoor coil temperature; an indoor air environment sensor, which is used to detect the indoor environment temperature; a controller, which is configured to: obtain the target operating frequency, target intake temperature, target exhaust temperature and speed of the indoor fan of the compressor in the current operating mode; determine the target indoor coil temperature and target indoor environment temperature according to the target intake temperature and the target exhaust temperature; determine the heat transfer coefficient of the air conditioner according to the speed, the target operating frequency and the target indoor environment temperature; determine the cooling capacity or heating capacity of the air conditioner in the current operating mode according to the heat transfer coefficient, the target indoor environment temperature and the target indoor coil temperature.

[0008] The air conditioner according to the embodiment of the present invention obtains the target operating frequency, target intake temperature, target exhaust temperature and speed of the indoor fan of the compressor in the current operating mode, and calculates the heat transfer coefficient in different operating modes. The corresponding real-time capacities are calculated according to the heat transfer coefficient in different operating modes, that is, the cooling capacity and heating capacity of the air conditioner are measured in real time. The real-time capacity of the air conditioner is calculated according to the operating status parameters of the air conditioner and the indoor and outdoor environmental parameters, and there is no need to calculate the capacity of the air conditioner according to the enthalpy difference method. The capacity calculation of the air conditioner is more convenient and accurate, and there is no need to realize the capacity detection of the air conditioner by adding additional devices. Therefore, the hardware cost is reduced while reducing the hardware space occupied by the air conditioner.

[0009] In some embodiments, when obtaining the target operating frequency of the compressor, the controller is configured to: obtain a first operating frequency and a second operating frequency of the compressor; calculate an absolute value of a frequency difference between the first operating frequency and the second operating frequency; when the absolute value of the frequency difference does not exceed a first preset frequency deviation, the first operating frequency, the second operating frequency and the preset first frequency compensation coefficient are substituted into a first target frequency calculation formula to obtain a first target operating frequency, and the first target operating frequency is used as the target operating frequency; when the absolute value of the frequency difference is between the first preset frequency deviation and the second preset frequency deviation, the first operating frequency, the second operating frequency, the operating frequency change time, the preset second frequency compensation coefficient and the preset third frequency compensation coefficient are substituted into a second target frequency calculation formula to obtain a second target operating frequency, and the second target operating frequency is used as the target operating frequency; when the absolute value of the frequency difference exceeds the second preset frequency deviation, the first operating frequency, the second operating frequency, the operating frequency change time, the preset fourth frequency compensation coefficient, the preset fifth frequency compensation coefficient and the preset sixth frequency compensation coefficient are substituted into a third target frequency calculation formula to obtain a third target operating frequency, and the third target operating frequency is used as the target operating frequency.

[0010] In some embodiments, the first target frequency calculation formula includes: Among them, the Fre c1 is the first target operating frequency, Fre is the first operating frequency, Fre1 is the second operating frequency, and A1 is the preset first frequency compensation coefficient; the second target frequency calculation formula includes: Among them, the Fre c2 is the second target operating frequency, Fre is the first operating frequency, Fre1 is the second operating frequency, A2 is the preset second frequency compensation coefficient, B2 is the preset third frequency compensation coefficient, and t1 is the operating frequency change time; the third target frequency calculation formula includes: Among them, the Fre c3 is the third target operating frequency, Fre is the first operating frequency, Fre1 is the second operating frequency, A3 is the preset fourth frequency compensation coefficient, B3 is the preset fifth frequency compensation coefficient, and C3 is the preset sixth frequency compensation coefficient.

[0011] In some embodiments, when determining the target indoor coil temperature according to the target intake temperature and the target exhaust temperature, the controller is configured to: obtain a first indoor coil temperature and a second indoor coil temperature; substitute the first indoor coil temperature, the second indoor coil temperature and a preset first coil temperature compensation coefficient into a first target indoor coil temperature calculation formula to obtain a first target indoor coil temperature, and use the first target indoor coil temperature as the target indoor coil temperature; substitute the first indoor coil temperature, the second indoor coil temperature, the target intake temperature, a preset second coil temperature compensation coefficient and a preset third coil temperature compensation coefficient into a second target indoor coil temperature calculation formula to obtain a second target indoor coil temperature, and use the second target indoor coil temperature as the target indoor coil temperature; substitute the first indoor coil temperature, the second indoor coil temperature, the target exhaust temperature, a preset fourth coil temperature compensation coefficient and a preset fifth coil temperature compensation coefficient into a third target indoor coil temperature calculation formula to obtain a third target indoor coil temperature, and use the third target indoor coil temperature as the target indoor coil temperature.

[0012] In some embodiments, the first target indoor coil temperature calculation formula includes: Among them, the T incoil_c_1 is the first target indoor coil temperature, the T incoil is the first indoor coil temperature, the T incoil_1 is the second indoor coil temperature, is the preset first coil temperature compensation coefficient; the second target indoor coil temperature calculation formula includes: Among them, T incoil_c_2 is the second target indoor coil temperature, T incoil is the first indoor coil temperature, the T incoil_1 is the second indoor coil temperature, To preset the second coil temperature compensation coefficient, B Tincoil_2 is the preset third coil temperature compensation coefficient, T s_c Target suction temperature; the third target indoor coil temperature calculation formula includes: Among them, T incoil_c_3 is the third target indoor coil temperature, T incoil is the first indoor coil temperature, the T incoil_1 is the second indoor coil temperature, T d_c is the target exhaust temperature, To preset the temperature compensation coefficient of the fourth coil, It is the preset fifth coil temperature compensation coefficient.

[0013] In some embodiments, when the target indoor ambient temperature is determined according to the target intake temperature and the target exhaust temperature, the controller is configured to: obtain a first indoor ambient temperature and a second indoor ambient temperature; substitute the first indoor ambient temperature, the second indoor ambient temperature and a preset first indoor temperature compensation coefficient into a first target indoor ambient temperature calculation formula to obtain a first target indoor ambient temperature, and use the first target indoor ambient temperature as the target indoor ambient temperature; substitute the first indoor ambient temperature, the second indoor ambient temperature, the first indoor coil temperature, a preset second air temperature compensation coefficient, a preset third air temperature compensation coefficient and a preset sixth coil temperature compensation coefficient into a second target indoor ambient temperature calculation formula to obtain a second target indoor ambient temperature, and use the second target indoor ambient temperature as the target indoor ambient temperature; substitute the first indoor ambient temperature, the second indoor ambient temperature, the target exhaust temperature, a preset fourth air temperature compensation coefficient, a preset fifth air temperature compensation coefficient and a preset exhaust temperature compensation coefficient into a third target indoor ambient temperature calculation formula to obtain a third target indoor ambient temperature, and use the third target indoor ambient temperature as the target indoor ambient temperature.

[0014] In some embodiments, the first target indoor ambient temperature calculation formula includes: Among them, T air_c_1 is the first target indoor ambient temperature, T air is the first indoor ambient temperature, T air_r is the second indoor ambient temperature, is a preset first indoor temperature compensation coefficient; the second target indoor environment temperature calculation formula includes: Among them, T air_c_2 is the second target indoor ambient temperature, T air is the first indoor ambient temperature, T air_1 is the second indoor ambient temperature, T incoil is the first indoor coil temperature, To preset the second air temperature compensation coefficient, is the preset third air temperature compensation coefficient, c2 is the preset sixth coil temperature compensation coefficient; the third target indoor ambient temperature calculation formula includes: Among them, T air_c_3 is the third target indoor ambient temperature, T air is the first indoor ambient temperature, T air_1 is the second indoor ambient temperature, is the target exhaust temperature, To preset the fourth air temperature compensation coefficient, is the preset fifth air temperature compensation coefficient, and c3 is the preset exhaust temperature compensation coefficient.

[0015] In some embodiments, when the heat transfer coefficient of the air conditioner is determined based on the rotational speed, the target operating frequency and the target indoor ambient temperature, the controller is configured as follows: when the air conditioner is in cooling mode or dehumidification mode, the rotational speed, the target operating frequency, the first target indoor ambient temperature and the second target indoor ambient temperature are substituted into a first heat transfer coefficient calculation formula to obtain the heat transfer coefficient of the cooling mode; when the air conditioner is in heating mode, the rotational speed, the target operating frequency, the first target indoor ambient temperature and the third target indoor ambient temperature are substituted into a second heat transfer coefficient calculation formula to obtain the heat transfer coefficient of the heating mode.

[0016] In some embodiments, the first heat transfer coefficient calculation formula includes: K cold =A K_1 *V a_1 +B K_1 *(T air_c_1 +C K_1 *T air_c_2 )+D K_1 *(Fre c ) b_2 , where K cold is the heat transfer coefficient of cooling mode, V a_1 is the rotation speed, Fre c is the target operating frequency, T air_c_1 is the first target indoor ambient temperature, T air_c_2 is the second target indoor ambient temperature, A K_1 is the preset first speed compensation coefficient, B K_1 is the preset first target ambient temperature compensation coefficient, C K_1 Preset the second target ambient temperature compensation coefficient, D K_1 is the preset first frequency compensation coefficient; the second heat transfer coefficient calculation formula includes: K heat =A K_2 *V a_2 +B K_2 *(T air_c_1 +C K_2 *T air_c_3 )+D K_2 *(Fre c ) b-2 , where K heat is the heat transfer coefficient of the heating mode, V a_2 is the rotation speed, Fre c is the target operating frequency, T air_c_1 is the first target indoor ambient temperature, T air_c_3 is the third target indoor ambient temperature, AK_2 is the preset second speed compensation coefficient, B K_2 is the preset third target ambient temperature compensation coefficient, C K_2 is the preset fourth target ambient temperature compensation coefficient, D K_2 The second frequency compensation coefficient is preset.

[0017] In some embodiments, when determining the cooling capacity or heating capacity of the air conditioner in the current operating mode based on the heat transfer coefficient, the target indoor ambient temperature, and the target indoor coil temperature, the controller is configured to: substitute the cooling mode heat transfer coefficient, the first target indoor ambient temperature, the second target indoor ambient temperature, the first target indoor coil temperature, the second target indoor coil temperature, a preset cooling capacity compensation coefficient, and a preset heat exchange area into a cooling capacity calculation formula to determine the cooling capacity of the air conditioner; substitute the heating mode heat transfer coefficient, the first target indoor ambient temperature, the third target indoor ambient temperature, the first target indoor coil temperature, the third target indoor coil temperature, the preset heating capacity compensation coefficient, and the preset heat exchange area into a heating capacity calculation formula to determine the heating capacity of the air conditioner.

[0018] In some embodiments, the cooling capacity calculation formula includes:

[0019] Q cold =a cold *K cold *(T air_c_1 -T incoil_c_1 )*A+K cold *(T air_c_2 -T incoil_c_2 )*A+C Q_cold

[0020] Among them, Q cold is the cooling capacity, the a cold is the preset first heat transfer compensation coefficient, K cold is the heat transfer coefficient of cooling mode, T air_c_1 is the first target indoor ambient temperature, T air_c_2 is the second target indoor ambient temperature, T incoil_c_1 is the first target indoor coil temperature, T incoil_c_2 is the second target indoor coil temperature, A is the preset heat exchange area, C Q_cold is a preset cooling capacity compensation coefficient; the heating capacity calculation formula includes:

[0021] Q heat =a heat *K heat *(Ti ncoil_c_1 -T air_c_1 )+K heat *(T incoil_c_3 -Tair_c_3 )*A+C Q_heat

[0022] Among them, Q heat is the heating capacity, the a heat is the preset second heat transfer compensation coefficient, K heat is the heat transfer coefficient of the heating mode, T air_c_1 is the first target indoor ambient temperature, T air_c_3 is the third target indoor ambient temperature, T incoil_c_1 is the first target indoor coil temperature, T incoil_c_3 is the third target indoor coil temperature, A is the preset heat exchange area, C Q_heat It is the preset heating amount compensation coefficient.

[0023] 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

[0024] 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:

[0025] Figure 1 is a structural schematic diagram of an air conditioner according to an embodiment of the present invention;

[0026] Figure 2 is a flow chart of obtaining a target operating frequency of a compressor for an air conditioner according to an embodiment of the present invention;

[0027] Figure 3 is a flow chart of determining a target indoor coil temperature for an air conditioner according to an embodiment of the present invention;

[0028] Figure 4 is a flow chart of determining a target indoor ambient temperature by an air conditioner according to an embodiment of the present invention;

[0029] Figure 5 is a flow chart of determining a heat transfer coefficient of an air conditioner according to an embodiment of the present invention;

[0030] Figure 6 is a flow chart of a method for calculating the capacity of an air conditioner according to an embodiment of the present invention.

[0031] Reference numerals: air conditioner 1;

[0032] Compressor 11; indoor fan 12; exhaust temperature sensor 13; intake temperature sensor 14; indoor coil temperature sensor 15; indoor air environment sensor 16; controller 17. DETAILED DESCRIPTION

[0033] Embodiments of the present invention are described in detail below. The embodiments described with reference to the accompanying drawings are exemplary. Embodiments of the present invention are described in detail below.

[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 air that has been conditioned and heat-exchanged.

[0035] The compressor compresses the refrigerant gas in a high temperature and high pressure state 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.

[0036] The expansion valve expands the high-temperature and high-pressure liquid refrigerant condensed in the condenser into a low-temperature and low-pressure liquid refrigerant. The evaporator evaporates the refrigerant expanded in the expansion valve and returns the low-temperature and low-pressure refrigerant gas 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 portion 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 an 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 6 An air conditioner 1 according to an embodiment of the present invention will be described.

[0040] like Figure 1 As shown, the air conditioner 1 of the embodiment of the present invention comprises: a compressor 11, an indoor fan 12, an exhaust temperature sensor 13, an intake temperature sensor 14, an indoor coil temperature sensor 15, an indoor air environment sensor 16 and a controller 17, wherein:

[0041] The compressor 11 is used to compress the low-temperature and low-pressure refrigerant gas into a high-temperature and high-pressure refrigerant gas and discharge it to the condenser; the indoor fan 12 is used to drive the indoor air to exchange heat with the indoor heat exchanger and then send it out from the air outlet; the exhaust temperature sensor 13 is used to detect the exhaust temperature of the compressor 11; the suction temperature sensor 14 is used to detect the suction temperature of the compressor 11; the indoor coil temperature sensor 15 is used to detect the indoor coil temperature; the indoor air environment sensor 16 is used to detect the indoor environment temperature; the controller 17 is configured to: obtain the target operating frequency, target suction temperature, target exhaust temperature and speed of the indoor fan 12 of the compressor 11 in the current operating mode; determine the target indoor coil temperature and the target indoor environment temperature according to the target suction temperature and the target exhaust temperature; determine the heat transfer coefficient of the air conditioner 1 according to the speed, target operating frequency and target indoor environment temperature; determine the cooling capacity or heating capacity of the air conditioner 1 in the current operating mode according to the heat transfer coefficient, the target indoor environment temperature and the target indoor coil temperature.

[0042] In the embodiment, after the air conditioner 1 is turned on, the controller 17 obtains the speed of the indoor fan 12 in the current operation mode of the air conditioner 1 in real time, for example, V a_2 According to the suction temperature sensor 14 detecting the suction temperature of the compressor 11, the suction temperature of the air conditioner 1 in the current operating mode is obtained in real time, for example, recorded as T s , and the suction temperature t1 seconds ago is recorded as T s1 , according to the suction temperature T in the current operating mode s And the suction temperature T before t1 seconds s1 Determine the target intake temperature, for example, T s_c According to the exhaust temperature sensor 13 detecting the exhaust temperature of the compressor 11, real-time acquisition of the exhaust temperature of the air conditioner 1 in the current operating mode, for example, recorded as T d and the exhaust temperature t1 seconds ago, for example, is recorded as T d1 , according to the exhaust temperature T in the current operating mode d and the exhaust temperature T1 seconds ago d1 Determine the target exhaust temperature, for example, T d_c ; Since the operating frequency of the compressor 11 changes when it compresses the low-temperature and low-pressure refrigerant gas into the high-temperature and high-pressure refrigerant gas and discharges it to the condenser, the operating frequency of the compressor 11 in the current operating mode of the air conditioner 1 is obtained, for example, recorded as Fre and the operating frequency t1 seconds ago is recorded as Fre1, and the target operating frequency of the compressor 11 is determined according to the operating frequency Fre of the compressor 11 in the current operating mode and the operating frequency Fre1 t1 seconds ago, for example, recorded as Fre c , where the target frequency includes a first target operating frequency, for example, denoted as Fre c1 , the second target operating frequency is, for example, denoted as Fre c2and the third target operating frequency, for example, denoted as Fre c3 , by obtaining the target operating frequency Fre of the compressor 11 in the current operating mode c , Target suction temperature T s_c , Target exhaust temperature T d_c and the speed V of the indoor fan 12 a_2 , to determine the operating state of the cooling side of the air conditioner 1 and the indoor and outdoor ambient air states according to the above operating parameters.

[0043] It is understandable that the controller 17 obtains the suction temperature T of the compressor 11 in real time according to the suction temperature sensor 14. s and the suction temperature T1 seconds ago s1 Then, the suction temperature T of the compressor 11 is s , the suction temperature T before t1 seconds s1 And the preset suction compensation coefficient is recorded as Substitute the target intake temperature calculation formula to obtain the target intake temperature, for example, denoted as T s_c , the target suction temperature calculation formula is as follows:

[0044]

[0045] Similarly, the controller 17 obtains the exhaust temperature of the compressor 11 in real time according to the exhaust temperature sensor 13. d and the exhaust temperature T1 seconds ago d1 Then, the exhaust temperature T of the compressor 11 is d , exhaust temperature T1 seconds ago d1 And the preset exhaust compensation coefficient is recorded as Substitute the target exhaust temperature calculation formula to obtain the target exhaust temperature, for example, denoted as T d_c , the target exhaust temperature calculation formula is as follows:

[0046]

[0047] Get the target operating frequency Fre of the compressor 11 in the current operating mode c , Target suction temperature T s_c , Target exhaust temperature T d_c and the speed V of the indoor fan 12 a_2 Then, according to the indoor coil temperature detected by the indoor coil temperature sensor 15, the indoor environment temperature detected by the indoor air environment sensor 16, and the target suction temperature T d_c and target exhaust temperature T s_c Determine the target indoor coil temperature and the target indoor ambient temperature, wherein the target indoor coil temperature includes a first target indoor coil temperature, for example, denoted as T incoil_c_1, the second target indoor coil temperature is, for example, denoted as T incoil_c_2 and the third target indoor coil temperature, for example, denoted as T incoil_c_3 ; The target indoor ambient temperature includes a first target indoor ambient temperature, for example, denoted as T air_c_1 , the second target indoor ambient temperature is, for example, denoted as T air_c_2 and the third target indoor ambient temperature, for example, denoted as T air_c_3 , to determine the target indoor coil temperature corresponding to different indoor coil temperatures, and the indoor ambient temperature corresponding to different indoor ambient temperatures.

[0048] After determining the target indoor coil temperature and target indoor ambient temperature, according to the speed V a_2 、Target operating frequency Fre c The heat transfer coefficient of the air conditioner 1 is determined by the target indoor ambient temperature, for example, denoted as K, wherein the heat transfer coefficient K includes the heat transfer coefficient of the cooling mode, for example, denoted as K cold and the heat transfer coefficient of the heating mode is denoted as K heat , to determine the heat transfer coefficient K corresponding to the air conditioner 1 in different operating modes.

[0049] After determining the heat transfer coefficient K of the air conditioner 1 in different operating modes, the real-time capacity of the air conditioner 1 in the corresponding operating mode is determined according to the heat transfer coefficient K, the target indoor ambient temperature, and the target indoor coil temperature. For example, when the operating mode of the air conditioner 1 is in the cooling operating mode, the real-time capacity of the air conditioner 1 in the corresponding operating mode is determined according to the heat transfer coefficient K of the cooling mode. cold , target indoor ambient temperature, target indoor coil temperature to determine the cooling capacity of the air conditioner 1; when the operation mode of the air conditioner 1 is in the heating operation mode, according to the heating mode heat transfer coefficient K heat , target indoor ambient temperature, and target indoor coil temperature to determine the heating amount of the air conditioner 1 so as to determine the real-time capacity of the air conditioner 1 under different operating modes.

[0050] According to the air conditioner 1 of the embodiment of the present invention, after being started up, the target operating frequency, target intake temperature, target exhaust temperature and rotation speed of the indoor fan 12 of the compressor 11 in the current operating mode are obtained to determine the operating state of the air conditioner 1 and the indoor and outdoor ambient air states, and the heat transfer coefficient in different operating modes is calculated according to the above parameters, thereby calculating the real-time capacity in different operating modes according to the heat transfer coefficient, that is, measuring the cooling capacity and heating capacity of the air conditioner 1 in real time. By calculating the real-time capacity of the air conditioner 1 according to the operating state parameters of the air conditioner 1 and the indoor and outdoor environmental parameters, there is no need to calculate the capacity of the air conditioner 1 according to the enthalpy difference method, so that the capacity calculation of the air conditioner 1 is more convenient and accurate, and there is no need to realize the capacity detection of the air conditioner 1 by adding additional devices, thereby reducing the hardware space occupied by the air conditioner 1 and reducing the hardware cost.

[0051] In some embodiments, when obtaining the target operating frequency of the compressor 11, the controller 17 is configured to: obtain the first operating frequency and the second operating frequency of the compressor 11; calculate the absolute value of the frequency difference between the first operating frequency and the second operating frequency; when the absolute value of the frequency difference does not exceed the first preset frequency deviation, the first operating frequency, the second operating frequency and the preset first frequency compensation coefficient are substituted into the first target frequency calculation formula to obtain the first target operating frequency, and the first target operating frequency is used as the target operating frequency; when the absolute value of the frequency difference is between the first preset frequency deviation and the second preset frequency deviation, the first operating frequency, the second operating frequency, the operating frequency change time, the preset second frequency compensation coefficient and the preset third frequency compensation coefficient are substituted into the second target frequency calculation formula to obtain the second target operating frequency, and the second target operating frequency is used as the target operating frequency; when the absolute value of the frequency difference exceeds the second preset frequency deviation, the first operating frequency, the second operating frequency, the operating frequency change time, the preset fourth frequency compensation coefficient, the preset fifth frequency compensation coefficient and the preset sixth frequency compensation coefficient are substituted into the third target frequency calculation formula to obtain the third target operating frequency, and the third target operating frequency is used as the target operating frequency.

[0052] In an embodiment, Figure 2 FIG. 1 is a flow chart of obtaining a target operating frequency of a compressor for an air conditioner according to an embodiment of the present invention. After the air conditioner 1 is turned on and operated, the controller 17 obtains in real time the first operating frequency of the compressor 11 in the current operating mode of the air conditioner 1, that is, the current operating frequency Fre of the compressor 11, and the second operating frequency, that is, the operating frequency Fre1 of the compressor 11 t1 seconds ago, to determine the operating state of the cooling side of the air conditioner 1, and calculates the frequency difference between the first operating frequency Fre and the second operating frequency Fre1 and takes the absolute value, that is, the absolute value of the frequency difference is |Fre-Fre1|, and determines the magnitude relationship between the absolute value of the frequency difference |Fre-Fre1| and the first preset frequency deviation, for example, recorded as ΔFre1, and the second preset frequency deviation, for example, recorded as ΔFre2. When the absolute value of the frequency difference |Fre-Fre1| does not exceed the first preset frequency deviation ΔFre1, that is, |Fre-Fre1|<ΔFre1, it is considered that the operating frequency deviation at this time is small, and the first operating frequency Fre, the second operating frequency Fre1 and the preset first frequency compensation coefficient, for example, recorded as A1, are brought into the first target operating frequency calculation formula to obtain the first target operating frequency, for example, recorded as Fre c1 , and set the first target operating frequency Fre c1 As the target operating frequency Fre c .

[0053] When the absolute value of the frequency difference |Fre-Fre1| is between the first preset frequency deviation ΔFre1 and the second preset frequency deviation ΔFre2, that is, ΔFre1≤|Fre-Fre1|≤ΔFre2, it is considered that the operating frequency deviation at this time is large, and the first operating frequency Fre, the second operating frequency Fre1, the operating frequency change time, for example, recorded as t1, the preset second frequency compensation coefficient, for example, recorded as A2, and the preset third frequency compensation coefficient, for example, recorded as B2, are brought into the second target operating frequency calculation formula to obtain the second target operating frequency, for example, recorded as Fre c2 , and set the second target operating frequency Fre c2 As the target operating frequency Fre c .

[0054] When the absolute value of the frequency difference |Fre-Fre1| exceeds the second preset frequency deviation ΔFre2, that is, |Fre-Fre1|>ΔFre2, it is considered that the operating frequency deviation at this time is large, and the first operating frequency Fre, the second operating frequency Fre1, the operating frequency change time t1, the preset fourth frequency compensation coefficient, for example, recorded as A3, the preset fifth frequency compensation coefficient, for example, recorded as B3, and the preset sixth frequency compensation coefficient, for example, recorded as C3, are brought into the third target operating frequency calculation formula to obtain the third target operating frequency, for example, recorded as Fre c3 , and the third target operating frequency Fre c3 As the target operating frequency Fre c The target frequency Fre corresponding to different operating frequencies is determined by the magnitude relationship between the absolute value of the frequency difference |Fre-Fre1| and the first preset frequency deviation ΔFre1 and the second preset frequency deviation ΔFre2. c , to determine the operating status of the air conditioner 1.

[0055] Reference below Figure 2 A method for obtaining a target operating frequency of a compressor of an air conditioner according to an embodiment of the present invention is described.

[0056] like Figure 2 As shown, the method for obtaining the target operating frequency of the compressor of the air conditioner according to the embodiment of the present invention at least includes steps S12 to S21.

[0057] Step S12, obtaining a first operating frequency and a second operating frequency of the compressor.

[0058] Step S13, calculating the absolute value of the frequency difference between the first operating frequency and the second operating frequency.

[0059] Step S14, determining whether the frequency difference does not exceed the first preset frequency deviation, if so, executing step S16; if not, executing step S15.

[0060] Step S15, determining whether the frequency difference is between the first preset frequency deviation and the second preset frequency deviation, if so, executing step S18; if not, executing step S20.

[0061] Step S16, bringing the first operating frequency, the second operating frequency and the preset first frequency compensation coefficient into a first target frequency calculation formula to obtain a first target operating frequency.

[0062] Step S17: taking the first target operating frequency as the target operating frequency.

[0063] Step S18, bringing the first operating frequency, the second operating frequency, the operating frequency change time, the preset second frequency compensation coefficient and the preset third frequency compensation coefficient into the second target frequency calculation formula to obtain the second target operating frequency.

[0064] Step S19: taking the second target operating frequency as the target operating frequency.

[0065] Step S20, bringing the first operating frequency, the second operating frequency, the operating frequency change time, the preset fourth frequency compensation coefficient, the preset fifth frequency compensation coefficient and the preset sixth frequency compensation coefficient into a third target frequency calculation formula to obtain a third target operating frequency.

[0066] Step S21: taking the third target operating frequency as the target operating frequency.

[0067] In some embodiments, the first target frequency calculation formula includes:

[0068]

[0069] Among them, Fre c1 is the first target operating frequency, Fre is the first operating frequency, Fre1 is the second operating frequency, and A1 is the preset first frequency compensation coefficient.

[0070] In the embodiment, after obtaining the first operating frequency Fre, the second operating frequency Fre1 and the preset first frequency compensation coefficient A1, the above parameters are substituted into the first target frequency calculation formula, and the first target frequency calculation formula is as follows:

[0071]

[0072] By calculating the first target operating frequency Fre c1 , thereby determining the target operating frequency Fre of the compressor 11 c .

[0073] In some embodiments, the second target frequency calculation formula includes:

[0074]

[0075] Among them, Fre c2 is the second target operating frequency, Fre is the first operating frequency, Fre1 is the second operating frequency, A2 is the preset second frequency compensation coefficient, B2 is the preset third frequency compensation coefficient, and t1 is the operating frequency change time.

[0076] In the embodiment, after obtaining the first operating frequency Fre, the second operating frequency Fre1, the operating frequency change time t1, the preset second frequency compensation coefficient A2 and the preset third frequency compensation coefficient B2, the above parameters are substituted into the second target frequency calculation formula, and the second target frequency calculation formula is as follows:

[0077]

[0078] By calculating the second target operating frequency Fre c2 , thereby determining the target operating frequency Fre of the compressor 11 c .

[0079] In some embodiments, the third target frequency calculation formula includes:

[0080]

[0081] Among them, Fre c3 is the third target operating frequency, Fre is the first operating frequency, Fre1 is the second operating frequency, A3 is the preset fourth frequency compensation coefficient, B3 is the preset fifth frequency compensation coefficient, and C3 is the preset sixth frequency compensation coefficient.

[0082] In the embodiment, after obtaining the first operating frequency Fre, the second operating frequency Fre1, the operating frequency change time t1, the preset fourth frequency compensation coefficient A3, the preset fifth frequency compensation coefficient B3 and the preset sixth frequency compensation coefficient C3, the above parameters are substituted into the third target frequency calculation formula, and the third target frequency calculation formula is as follows:

[0083]

[0084] By calculating the third target operating frequency Fre c3 , thereby determining the target operating frequency Fre of the compressor 11 c .

[0085] By determining the first target operating frequency Fre c1 , the second target operating frequency Fre c2 and the third target operating frequency Fre c3 , thereby determining the target operating frequency Fre corresponding to different operating frequencies c, to determine the operating status of the air conditioner 1.

[0086] In some embodiments, when the target indoor coil temperature is determined according to the target intake temperature and the target exhaust temperature, the controller 17 is configured to: obtain the first indoor coil temperature and the second indoor coil temperature; substitute the first indoor coil temperature, the second indoor coil temperature and the preset first coil temperature compensation coefficient into the first target indoor coil temperature calculation formula to obtain the first target indoor coil temperature, and use the first target indoor coil temperature as the target indoor coil temperature; substitute the first indoor coil temperature, the second indoor coil temperature, the target intake temperature, the preset second coil temperature compensation coefficient, and the preset third coil temperature compensation coefficient into the second target indoor coil temperature calculation formula to obtain the second target indoor coil temperature, and use the second target indoor coil temperature as the target indoor coil temperature; substitute the first indoor coil temperature, the second indoor coil temperature, the target exhaust temperature, the preset fourth coil temperature compensation coefficient, and the preset fifth coil temperature compensation coefficient into the third target indoor coil temperature calculation formula to obtain the third target indoor coil temperature, and use the third target indoor coil temperature as the target indoor coil temperature.

[0087] In an embodiment, Figure 3 1 is a flow chart of determining a target indoor coil temperature for an air conditioner according to an embodiment of the present invention. After the air conditioner 1 is turned on, the controller 17 detects the indoor coil temperature according to the indoor coil temperature sensor 15, and obtains the first indoor coil temperature in the current operation mode of the air conditioner 1 in real time, that is, the current indoor coil temperature, for example, denoted as T incoil , and the second indoor coil temperature, i.e., the indoor coil temperature before t1 seconds, is recorded as T incoil_1 .

[0088] Get the first indoor coil temperature, that is, the current indoor coil temperature T incoil , and the second indoor coil temperature, i.e. the indoor coil temperature T before t1 seconds incoil_1 After that, the first indoor coil temperature T incoil , the second indoor coil temperature T incoil_1 And the preset first coil temperature compensation coefficient is, for example, recorded as Substitute into the first target indoor coil temperature calculation formula to obtain the first target indoor coil temperature, for example, denoted as T incoil_c_1 , and set the first target indoor coil temperature T incoil_c_1 as the target indoor coil temperature.

[0089] Get the first indoor coil temperature, that is, the current indoor coil temperature T incoil , and the second indoor coil temperature, i.e. the indoor coil temperature T before t1 seconds incoil_1 After that, the first indoor coil temperature T incoil , the second indoor coil temperature Tincoil_1 , Target exhaust temperature T d_c , the preset second coil temperature compensation coefficient is, for example, The preset third coil temperature compensation coefficient is, for example, Substitute into the second target indoor coil temperature calculation formula to obtain the second target indoor coil temperature, for example, denoted as T incoil_c_2 , and set the second target indoor coil temperature T incoil_c_2 as the target indoor coil temperature.

[0090] Get the first indoor coil temperature, that is, the current indoor coil temperature T incoil , and the second indoor coil temperature, i.e. the indoor coil temperature T before t1 seconds incoil_1 After that, the first indoor coil temperature T incoil , the second indoor coil temperature T incoil_1 , Target suction temperature T s_c , the preset fourth coil temperature compensation coefficient is, for example, The preset fifth coil temperature compensation coefficient is, for example, Substitute into the third target indoor coil temperature calculation formula to obtain the third target indoor coil temperature, for example, denoted as T incoil_c_3 and set the third target indoor coil temperature T incoil_c_3 as the target indoor coil temperature.

[0091] By adjusting the target suction temperature T s_c , Target exhaust temperature T d_c , the first indoor coil temperature T incoil and the second indoor coil temperature T incoil_1 The target indoor coil temperature is determined, thereby determining the target indoor coil temperature corresponding to different indoor coil temperatures to determine the indoor ambient air state of the air conditioner 1 .

[0092] In some embodiments, the first target indoor coil temperature calculation formula includes:

[0093]

[0094] Among them, T incoil_c_1 is the first target indoor coil temperature, T incoil is the first indoor coil temperature, T incoil_1 is the second indoor coil temperature, It is the preset temperature compensation coefficient of the first coil.

[0095] In an embodiment, the first indoor coil temperature T is obtained. incoil , the second indoor coil temperature T incoil_1 And preset the first coil temperature compensation coefficient Then, the above parameters are substituted into the first target indoor coil temperature calculation formula, and the first target indoor coil temperature calculation formula is as follows:

[0096]

[0097] By calculating the first target indoor coil temperature T incoil_c_1 , thereby determining the target indoor coil temperature.

[0098] In some embodiments, the second target indoor coil temperature calculation formula includes:

[0099]

[0100] Among them, T incoil_c_2 is the second target indoor coil temperature, T incoii is the first indoor coil temperature, T incoil_1 is the second indoor coil temperature, To preset the second coil temperature compensation coefficient, is the preset third coil temperature compensation coefficient, T s_c Target suction temperature.

[0101] In an embodiment, the first indoor coil temperature T is obtained. incoil , the second indoor coil temperature T incoil_1 , Target suction temperature T s_c , preset the second coil temperature compensation coefficient Preset the third coil temperature compensation coefficient Then, the above parameters are substituted into the second target indoor coil temperature calculation formula, and the second target indoor coil temperature calculation formula is as follows:

[0102]

[0103] By calculating the second target indoor coil temperature T incoil_c_2 , thereby determining the target indoor coil temperature.

[0104] In some embodiments, the third target indoor coil temperature calculation formula includes:

[0105]

[0106] Among them, T incoil_c_3 is the third target indoor coil temperature, T incoil is the first indoor coil temperature, T incoil_1 is the second indoor coil temperature, To preset the temperature compensation coefficient of the fourth coil, is the preset fifth coil temperature compensation coefficient, T d_c is the target exhaust temperature.

[0107] In an embodiment, the first indoor coil temperature T is obtained. incoil , the second indoor coil temperature T incoil_1 , Target exhaust temperature T d_c , Preset the fourth coil temperature compensation coefficient Preset fifth coil temperature compensation coefficient Then, the above parameters are substituted into the third target indoor coil temperature calculation formula, and the third target indoor coil temperature calculation formula is as follows:

[0108]

[0109] By calculating the third target indoor coil temperature T incoil_c_3 , thereby determining the target indoor coil temperature.

[0110] By determining the first target indoor coil temperature T incoil_c_1 , the second target indoor coil temperature T incoil_c_2 and the third target indoor coil temperature T incoil_c_3 , thereby determining the target indoor coil temperature corresponding to different indoor coil temperatures to determine the indoor ambient air state of the air conditioner 1.

[0111] In some embodiments, when the target indoor ambient temperature is determined according to the target intake temperature and the target exhaust temperature, the controller 17 is configured to: obtain the first indoor ambient temperature and the second indoor ambient temperature; substitute the first indoor ambient temperature, the second indoor ambient temperature and the preset first indoor temperature compensation coefficient into the first target indoor ambient temperature calculation formula to obtain the first target indoor ambient temperature, and use the first target indoor ambient temperature as the target indoor ambient temperature; substitute the first indoor ambient temperature, the second indoor ambient temperature, the first indoor coil temperature, the preset second air temperature compensation coefficient, the preset third air temperature compensation coefficient and the preset sixth coil temperature compensation coefficient into the second target indoor ambient temperature calculation formula to obtain the second target indoor ambient temperature, and use the second target indoor ambient temperature as the target indoor ambient temperature; substitute the first indoor ambient temperature, the second indoor ambient temperature, the target exhaust temperature, the preset fourth air temperature compensation coefficient, the preset fifth air temperature compensation coefficient and the preset exhaust temperature compensation coefficient into the third target indoor ambient temperature calculation formula to obtain the third target indoor ambient temperature, and use the third target indoor ambient temperature as the target indoor ambient temperature.

[0112] In an embodiment, Figure 4 1 is a flow chart of determining the target indoor ambient temperature of an air conditioner according to an embodiment of the present invention. After the air conditioner 1 is turned on, the controller 17 detects the indoor ambient temperature according to the indoor air environment sensor 16, and obtains the first indoor ambient temperature of the current operating mode of the air conditioner 1 in real time, that is, the current indoor ambient temperature, for example, denoted as Tair , and the second indoor ambient temperature, i.e., the indoor ambient temperature t1 seconds ago, is recorded as T air_1 .

[0113] Get the first indoor ambient temperature in the current operating mode, that is, the current indoor ambient temperature T air , and the second indoor ambient temperature, i.e. the indoor ambient temperature T1 seconds ago air_1 Then, the first indoor environment temperature T air , the second indoor environment temperature T air_r And the preset first indoor temperature compensation coefficient is, for example, recorded as Substitute the first target indoor ambient temperature calculation formula to obtain the first target indoor ambient temperature, for example, denoted as T air_c_1 , and set the first target indoor ambient temperature T air_c_1 is the target indoor ambient temperature.

[0114] Get the first indoor ambient temperature in the current operating mode, that is, the current indoor ambient temperature T air , and the second indoor ambient temperature, i.e. the indoor ambient temperature T1 seconds ago air_1 Then, the first indoor environment temperature T air , the second indoor environment temperature T air_1 , the first indoor coil temperature T incoil , the preset second air temperature compensation coefficient is, for example, The preset third air temperature compensation coefficient is, for example, The preset sixth coil temperature compensation coefficient, for example, denoted as c2, is brought into the second target indoor ambient temperature calculation formula to obtain the second target indoor ambient temperature, for example, denoted as T air_c_2 , and set the second target indoor ambient temperature T air_c_2 as the target indoor ambient temperature.

[0115] Get the first indoor ambient temperature in the current operating mode, that is, the current indoor ambient temperature T air , and the second indoor ambient temperature, i.e. the indoor ambient temperature T1 seconds ago air_1 Then, the first indoor environment temperature T air , the second indoor environment temperature T air_1 , Target exhaust temperature T d_c , the fourth air temperature compensation coefficient is preset, for example, The preset fifth air temperature compensation coefficient is, for example, and the preset exhaust temperature compensation coefficient, for example, denoted as c3, are brought into the third target indoor ambient temperature calculation formula to obtain the third target indoor ambient temperature, for example, denoted as T air_c_3 , and set the third target indoor ambient temperature T air_c_3 is the target indoor ambient temperature.

[0116] By adjusting the target suction temperature T s_c , Target exhaust temperature T d_c , the first indoor ambient temperature T air And the second indoor ambient temperature T air_1 The target indoor ambient temperature is determined, thereby determining the target indoor ambient temperature corresponding to different indoor ambient temperatures, so as to determine the indoor ambient air state of the air conditioner 1 .

[0117] In some embodiments, the first target indoor ambient temperature calculation formula includes:

[0118]

[0119] Among them, T air_c_1 is the first target indoor ambient temperature, T air is the first indoor ambient temperature, T air_1 is the second indoor ambient temperature, It is the preset first indoor temperature compensation coefficient.

[0120] In an embodiment, the first indoor environment temperature T is obtained. air , the second indoor environment temperature T air_1 And preset the first indoor temperature compensation coefficient Then, the above parameters are brought into the first target indoor ambient temperature calculation formula, and the first target indoor ambient temperature calculation formula is as follows:

[0121]

[0122] By calculating the first target indoor ambient temperature T air_c_1 , thereby determining the target indoor ambient temperature.

[0123] In some embodiments, the second target indoor ambient temperature calculation formula includes:

[0124]

[0125] Among them, T air_c_2 is the second target indoor ambient temperature, T air is the first indoor ambient temperature, T air_1 is the second indoor ambient temperature, T incoil is the first indoor coil temperature, To preset the second air temperature compensation coefficient, is the preset third air temperature compensation coefficient, and c2 is the preset sixth coil temperature compensation coefficient.

[0126] In an embodiment, the first indoor environment temperature T is obtained. air , the second indoor environment temperature Tair_1 , the first indoor coil temperature T incoil , preset the second air temperature compensation coefficient Preset third air temperature compensation coefficient After the sixth coil temperature compensation coefficient c2 is preset, the above parameters are substituted into the second target indoor ambient temperature calculation formula. The second target indoor ambient temperature calculation formula is as follows:

[0127]

[0128] By calculating the second target indoor ambient temperature T air_c_2 , thereby determining the target indoor ambient temperature.

[0129] In some embodiments, the third target indoor ambient temperature calculation formula includes:

[0130]

[0131] Among them, T air_c_3 is the third target indoor ambient temperature, T air is the first indoor ambient temperature, T air_1 is the second indoor ambient temperature, T d_c is the target exhaust temperature, To preset the fourth air temperature compensation coefficient, is the preset fifth air temperature compensation coefficient, and c3 is the preset exhaust temperature compensation coefficient.

[0132] In an embodiment, the first indoor environment temperature T is obtained. air , the second indoor environment temperature T air_1 , Target exhaust temperature T d_c , Preset the fourth air temperature compensation coefficient Preset fifth air temperature compensation coefficient After the preset exhaust temperature compensation coefficient c3 is set, the above parameters are substituted into the third target indoor ambient temperature calculation formula. The third target indoor ambient temperature calculation formula is as follows:

[0133]

[0134] By calculating the third target indoor ambient temperature T air_c_3 , thereby determining the target indoor ambient temperature.

[0135] By determining the first target indoor ambient temperature T air_c_1 , the second target indoor ambient temperature T air_c_2 and the third target indoor ambient temperature T air_c_3 , thereby determining the target indoor ambient temperature corresponding to different indoor ambient temperatures to determine the indoor ambient air state of the air conditioner 1.

[0136] In some embodiments, when the heat transfer coefficient of the air conditioner 1 is determined based on the rotational speed, target operating frequency and target indoor ambient temperature, the controller 17 is configured as follows: when the air conditioner 1 is in cooling mode or dehumidification mode, the rotational speed, target operating frequency, first target indoor ambient temperature and second target indoor ambient temperature are substituted into the first heat transfer coefficient calculation formula to obtain the heat transfer coefficient of the cooling mode; when the air conditioner 1 is in heating mode, the rotational speed, target operating frequency, first target indoor ambient temperature and third target indoor ambient temperature are substituted into the second heat transfer coefficient calculation formula to obtain the heat transfer coefficient of the heating mode.

[0137] In an embodiment, Figure 5 FIG. 1 is a flow chart of determining the heat transfer coefficient of an air conditioner according to an embodiment of the present invention. After determining the target indoor coil temperature and the target indoor ambient temperature, the operation mode of the air conditioner is obtained to determine whether the air conditioner 1 is in the cooling mode or the dehumidification mode. When the air conditioner 1 is in the cooling mode or the dehumidification mode, the speed V is set to a_2 、Target operating frequency Fre c , the first target indoor ambient temperature T air_c_1 and the second target indoor ambient temperature T air_c_2 Substitute the first heat transfer coefficient calculation formula into the first heat transfer coefficient calculation formula, and determine the first heat transfer coefficient, that is, the heat transfer coefficient of the cooling mode, according to the first heat transfer coefficient calculation formula, for example, denoted as K cold .

[0138] When the air conditioner 1 is in heating mode, the speed V a_2 、Target operating frequency Fre c , the first target indoor ambient temperature T air_c_1 And the third target indoor ambient temperature T air_c_3 Substitute the second heat transfer coefficient calculation formula into the second heat transfer coefficient calculation formula to determine the second heat transfer coefficient, that is, the heating mode heat transfer coefficient K heat .

[0139] The first heat transfer coefficient, i.e., the cooling mode heat transfer coefficient K, is determined according to the first heat transfer coefficient calculation formula. cold , and determine the second heat transfer coefficient, that is, the heating mode heat transfer coefficient K, according to the second heat transfer calculation formula heat , thereby determining the corresponding heat transfer coefficient K under different operating modes.

[0140] In some embodiments, the first heat transfer coefficient calculation formula includes:

[0141] K cold =A K_1 *V a_1 +B K_1 *(T air_c_1 +C K_1 *Tair_c_2 )+D K_1 *(Fre c ) b_2

[0142] Among them, K cold is the heat transfer coefficient of cooling mode, V a_1 is the rotation speed, Fre c is the target operating frequency, T air_c_1 is the first target indoor ambient temperature, T air_c_2 is the second target indoor ambient temperature, A K_1 is the preset first speed compensation coefficient, B K_1 is the preset first target ambient temperature compensation coefficient, C K_1 Preset the second target ambient temperature compensation coefficient, D K_1 A first frequency compensation coefficient is preset.

[0143] In an embodiment, the speed V is obtained a_2 、Target operating frequency Fre c , the first target indoor ambient temperature T air_c_1 and the second target indoor ambient temperature T air_c_2 After that, the preset first speed compensation coefficient is obtained, for example, recorded as A K_r , the preset first target ambient temperature compensation coefficient is, for example, denoted as B K_1 , preset the second target ambient temperature compensation coefficient, for example, recorded as C K_1 , the preset first frequency compensation coefficient is, for example, denoted as D K_1 , bring the above parameters into the first heat transfer coefficient calculation formula, the first heat transfer coefficient calculation formula is as follows:

[0144] K cold =A K_1 *V a_1 +B K_1 *(T air_c_1 +C K_1 *T air_c_2 )+D K_1 *(Fre c ) b_2

[0145] By calculating the first heat transfer coefficient, namely the cooling mode heat transfer coefficient K cold , so according to the cooling mode heat transfer coefficient K cold Determine the cooling capacity of the air conditioner 1 when it is in cooling mode, for example, denoted as Q cold .

[0146] In some embodiments, the second heat transfer coefficient calculation formula includes:

[0147] K heat =A K_2*V a_2 +B K_2 *(T air_c_1 +C K_2 *T air_c_3 )+D K_2 *(Fre c ) b_2

[0148] Among them, K heat is the heat transfer coefficient of the heating mode, V a_2 is the rotation speed, Fre c is the target operating frequency, T air_c_1 is the first target indoor ambient temperature, T air_c_3 is the third target indoor ambient temperature, A K_2 is the preset second speed compensation coefficient, B K_2 is the preset third target ambient temperature compensation coefficient, C K_2 is the preset fourth target ambient temperature compensation coefficient, D K_2 The second frequency compensation coefficient is preset.

[0149] In an embodiment, the speed V is obtained a_2 、Target operating frequency Fre c , the first target indoor ambient temperature T air_c_1 And the third target indoor ambient temperature T air_c_3 After that, the preset second speed compensation coefficient is obtained, for example, recorded as A K_2 The preset third target ambient temperature compensation coefficient is, for example, B K_2 , the fourth target ambient temperature compensation coefficient is preset, for example, denoted as C K_2 , the preset second frequency compensation coefficient is, for example, denoted as D K_2 , bring the above parameters into the second heat transfer coefficient calculation formula, the second heat transfer coefficient calculation formula is as follows:

[0150] K heat =A K_2 *V a_2 +B K_2 *(T air_c_1 +C K_2 *T air_c_3 )+D K_2 *(Fre c ) b_2

[0151] By calculating the second heat transfer coefficient, that is, the heating mode heat transfer coefficient K heat , so according to the heating mode heat transfer coefficient K heat Determine the heating capacity when the air conditioner 1 is in the heating mode, for example, record it as Q heat .

[0152] In some embodiments, when determining the cooling capacity or heating capacity of the air conditioner 1 in the current operating mode based on the heat transfer coefficient, the target indoor ambient temperature, and the target indoor coil temperature, the controller 17 is configured to: substitute the heat transfer coefficient of the cooling mode, the first target indoor ambient temperature, the second target indoor ambient temperature, the first target indoor coil temperature, the second target indoor coil temperature, the preset cooling capacity compensation coefficient, and the preset heat exchange area into the cooling capacity calculation formula to determine the cooling capacity of the air conditioner 1; substitute the heat transfer coefficient of the heating mode, the first target indoor ambient temperature, the third target indoor ambient temperature, the first target indoor coil temperature, the third target indoor coil temperature, the preset heating capacity compensation coefficient, and the preset heat exchange area into the heating capacity calculation formula to determine the heating capacity of the air conditioner 1.

[0153] In an embodiment, the cooling mode heat transfer coefficient K is determined cold Then, the first target indoor environment temperature T is obtained. air_c_1 , the second target indoor ambient temperature T air_c_2 , the first target indoor coil temperature T incoil_c_1 , the second target indoor coil temperature T incoil_c_2 , preset cooling capacity compensation coefficient, for example, denoted as C Q_cold and the preset heat exchange area is recorded as A, and the above parameters are substituted into the cooling capacity calculation formula to determine the cooling capacity Q of the air conditioner 1 cold .

[0154] Determine the heat transfer coefficient K of the heating mode heat Then, the first target indoor environment temperature T is obtained. air_c_1 , the third target indoor environment temperature T air_c_3 , the first target indoor coil temperature T incoil_c_1 , the third target indoor coil temperature T incoil_c_3 , preset heating compensation coefficient, for example, C Q_heat and the preset heat exchange area is recorded as A, and the above parameters are substituted into the heating calculation formula to determine the heating capacity Q of the air conditioner 1 heat .

[0155] In some embodiments, the cooling capacity calculation formula includes:

[0156] Q cold =a cold *K cold *(T air_c_1 -T incoil_c_1 )*A+K cold *(T air_c_2 -T incoil_c_2 )*A+C Q_cold

[0157] Among them, Q cold is the cooling capacity, a coldis the preset first heat transfer compensation coefficient, K cold is the heat transfer coefficient of cooling mode, T air_c_1 is the first target indoor ambient temperature, T air_c_2 is the second target indoor ambient temperature, T incoil_c_1 is the first target indoor coil temperature, T incoil_c_2 is the second target indoor coil temperature, A is the preset heat exchange area, C Q_cold It is the preset cooling capacity compensation coefficient.

[0158] In an embodiment, the cooling mode heat transfer coefficient K is determined cold , the first target indoor ambient temperature T air_c_1 , the second target indoor ambient temperature T air_c_2 , the first target indoor coil temperature T incoil_c_1 , the second target indoor coil temperature T incoil_c_2 , preset cooling capacity compensation coefficient C Q_cold After the heat exchange area A is preset, the above parameters are substituted into the cooling capacity calculation formula. The cooling capacity calculation formula is as follows:

[0159] Q cold =a cold *K cold *(T air_c_1 -Ti ncoil_c_1 )*A+K cold *(T air_c_2 -T incoil_c_2 )*A+C Q_cold

[0160] By calculating the cooling capacity Q of air conditioner 1 cold , determine the real-time capacity of the air conditioner 1 when it is in the cooling operation mode.

[0161] The heating capacity calculation formula includes:

[0162] Q heat =a heat *K heat *(Ti ncoil_c_1 -T air_c_1 )+K heat *(T incoil_c_3 -T air_c_3 )*A+C Q_heat

[0163] Among them, Q heat is the heating capacity, a heat is the preset second heat transfer compensation coefficient, K heat is the heat transfer coefficient of the heating mode, T air_c_1 is the first target indoor ambient temperature, T air_c_3 is the third target indoor ambient temperature, T incoil_c_1is the first target indoor coil temperature, T incoil_c_3 is the third target indoor coil temperature, A is the preset heat exchange area, C Q_heat It is the preset heating amount compensation coefficient.

[0164] In an embodiment, the heat transfer coefficient K in the heating mode is determined heat , the first target indoor ambient temperature T air_c_1 , the third target indoor environment temperature T air_c_3 , the first target indoor coil temperature T incoil_c_1 , the third target indoor coil temperature T incoil_c_3 , preset heating compensation coefficient, for example, C Q_heat After the heat exchange area A is preset, the above parameters are substituted into the heating capacity calculation formula. The heating capacity calculation formula is as follows:

[0165] Q heat =a heat *K heat *(T incoil_c_1 -T air_c_1 )+K heat *(T incoil_c_3 -T air_c_3 )*A+C Q_heat

[0166] By calculating the heating capacity Q of air conditioner 1 heat , determine the real-time capacity of the air conditioner 1 when it is in the heating operation mode.

[0167] According to the cooling mode heat transfer coefficient K cold and the heat transfer coefficient K of the heating mode heat Calculate the cooling capacity Q of air conditioner 1 cold And heating capacity Q heat , thereby determining the real-time capacity of the air conditioner 1 when it is in different operating modes, and this calculation method makes the capacity calculation of the air conditioner 1 more convenient and accurate.

[0168] Reference below Figure 6 The capacity calculation method of the air conditioner according to the embodiment of the present invention is described by way of example.

[0169] like Figure 6 As shown, the capacity calculation method of the air conditioner according to the embodiment of the present invention at least includes steps S11 to S40.

[0170] Step S11, obtaining a target intake temperature, a target exhaust temperature and a rotation speed of the indoor fan.

[0171] Step S12, obtaining a first operating frequency and a second operating frequency of the compressor.

[0172] Step S13, calculating the absolute value of the frequency difference between the first operating frequency and the second operating frequency.

[0173] Step S14, determining whether the frequency difference does not exceed the first preset frequency deviation, if so, executing step S16; if not, executing step S15.

[0174] Step S15, determining whether the frequency difference is between the first preset frequency deviation and the second preset frequency deviation, if so, executing step S18; if not, executing step S20.

[0175] Step S16, bringing the first operating frequency, the second operating frequency and the preset first frequency compensation coefficient into a first target frequency calculation formula to obtain a first target operating frequency.

[0176] Step S17: taking the first target operating frequency as the target operating frequency.

[0177] Step S18, bringing the first operating frequency, the second operating frequency, the operating frequency change time, the preset second frequency compensation coefficient and the preset third frequency compensation coefficient into the second target frequency calculation formula to obtain the second target operating frequency.

[0178] Step S19: taking the second target operating frequency as the target operating frequency.

[0179] Step S20, bringing the first operating frequency, the second operating frequency, the operating frequency change time, the preset fourth frequency compensation coefficient, the preset fifth frequency compensation coefficient and the preset sixth frequency compensation coefficient into a third target frequency calculation formula to obtain a third target operating frequency.

[0180] Step S21: taking the third target operating frequency as the target operating frequency.

[0181] Step S22, obtaining the first indoor coil temperature and the second indoor coil temperature.

[0182] Step S23, the first indoor coil temperature, the second indoor coil temperature and the preset first coil temperature compensation coefficient are substituted into the first target indoor coil temperature calculation formula to obtain the first target indoor coil temperature.

[0183] Step S24: taking the first target indoor coil temperature as the target indoor coil temperature.

[0184] Step S25, bringing the first indoor coil temperature, the second indoor coil temperature, the target suction temperature, the preset second coil temperature compensation coefficient, and the preset third coil temperature compensation coefficient into the second target indoor coil temperature calculation formula.

[0185] Step S26: taking the second target indoor coil temperature as the target indoor coil temperature.

[0186] Step S27, the first indoor coil temperature, the second indoor coil temperature, the target exhaust temperature, the preset fourth coil temperature compensation coefficient, and the preset fifth coil temperature compensation coefficient are substituted into the third target indoor coil temperature calculation formula.

[0187] Step S28: taking the third target indoor coil temperature as the target indoor coil temperature.

[0188] Step S29, obtaining the first indoor ambient temperature and the second indoor ambient temperature.

[0189] Step S30, bringing the first indoor ambient temperature, the second indoor ambient temperature and the preset first indoor temperature compensation coefficient into a first target indoor ambient temperature calculation formula to obtain the first target indoor ambient temperature.

[0190] Step S31: taking the first target indoor ambient temperature as the target indoor ambient temperature.

[0191] Step S32, the first indoor ambient temperature, the second indoor ambient temperature, the first indoor coil temperature, the preset second air temperature compensation coefficient, the preset third air temperature compensation coefficient and the preset sixth coil temperature compensation coefficient are substituted into the second target indoor ambient temperature calculation formula to obtain the second target indoor ambient temperature.

[0192] Step S33: taking the second target indoor ambient temperature as the target indoor ambient temperature.

[0193] Step S34, the first indoor ambient temperature, the second indoor ambient temperature, the target exhaust temperature, the preset fourth air temperature compensation coefficient, the preset fifth air temperature compensation coefficient and the preset exhaust temperature compensation coefficient are substituted into the third target indoor ambient temperature calculation formula to obtain the third target indoor ambient temperature.

[0194] Step S35: taking the third target indoor ambient temperature as the target indoor ambient temperature.

[0195] Step S36, determining whether the air conditioner is in cooling mode or dehumidification mode, if so, executing step S39; if not, executing step S37.

[0196] Step S37, the rotation speed, the target operating frequency, the first target indoor ambient temperature and the third target indoor ambient temperature are substituted into the second heat transfer coefficient calculation formula to obtain the heating mode heat transfer coefficient.

[0197] Step S38, the heating mode heat transfer coefficient, the first target indoor ambient temperature, the third target indoor ambient temperature, the first target indoor coil temperature, the third target indoor coil temperature, the preset heating capacity compensation coefficient and the preset heat exchange area are substituted into the heating capacity calculation formula to determine the heating capacity of the air conditioner.

[0198] Step S39, the rotation speed, the target operating frequency, the first target indoor ambient temperature and the second target indoor ambient temperature are substituted into the first heat transfer coefficient calculation formula to obtain the cooling mode heat transfer coefficient.

[0199] Step S40, the cooling mode heat transfer coefficient, the first target indoor ambient temperature, the second target indoor ambient temperature, the first target indoor coil temperature, the second target indoor coil temperature, the preset cooling capacity compensation coefficient and the preset heat exchange area are substituted into the cooling capacity calculation formula to determine the cooling capacity of the air conditioner.

[0200] According to the air conditioner 1 of the embodiment of the present invention, after being started up, the target operating frequency, target intake temperature, target exhaust temperature and rotation speed of the indoor fan 12 of the compressor 11 in the current operating mode are obtained to determine the operating state of the air conditioner 1 and the indoor and outdoor ambient air states, and the heat transfer coefficient in different operating modes is calculated according to the above parameters, thereby calculating the real-time capacity in different operating modes according to the heat transfer coefficient, that is, measuring the cooling capacity and heating capacity of the air conditioner 1 in real time. By calculating the real-time capacity of the air conditioner 1 according to the operating state parameters of the air conditioner 1 and the indoor and outdoor environmental parameters, there is no need to calculate the capacity of the air conditioner 1 according to the enthalpy difference method, so that the capacity calculation of the air conditioner 1 is more convenient and accurate, and there is no need to realize the capacity detection of the air conditioner 1 by adding additional devices, thereby reducing the hardware space occupied by the air conditioner 1 and reducing the hardware cost.

[0201] 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.

[0202] 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: The compressor is used to compress the low-temperature and low-pressure refrigerant gas into high-temperature and high-pressure refrigerant gas and discharge it to the condenser; Indoor fan, used to drive indoor air to exchange heat with indoor heat exchanger and then send it out from the air outlet; An exhaust temperature sensor, used to detect the exhaust temperature of the compressor; A suction temperature sensor, used to detect the suction temperature of the compressor; Indoor coil temperature sensor, used to detect indoor coil temperature; Indoor air environment sensor, used to detect indoor ambient temperature; The controller is configured to: obtain a target operating frequency, a target suction temperature, a target exhaust temperature and a rotation speed of an indoor fan of the compressor in a current operating mode; Determining a target indoor coil temperature and a target indoor ambient temperature according to the target suction temperature and the target exhaust temperature; determining a heat transfer coefficient of the air conditioner according to the rotation speed, the target operating frequency and the target indoor ambient temperature; The cooling capacity or heating capacity of the air conditioner in the current operation mode is determined according to the heat transfer coefficient, the target indoor ambient temperature, and the target indoor coil temperature.

2. The air conditioner according to claim 1, characterized in that: When obtaining the target operating frequency of the compressor, the controller is configured as follows: Acquiring a first operating frequency and a second operating frequency of the compressor; Calculating an absolute value of a frequency difference between the first operating frequency and the second operating frequency; When the absolute value of the frequency difference does not exceed the first preset frequency deviation, the first operating frequency, the second operating frequency and the preset first frequency compensation coefficient are substituted into the first target frequency calculation formula to obtain the first target operating frequency, and the first target operating frequency is used as the target operating frequency; When the absolute value of the frequency difference is between the first preset frequency deviation and the second preset frequency deviation, the first operating frequency, the second operating frequency, the operating frequency change time, the preset second frequency compensation coefficient and the preset third frequency compensation coefficient are substituted into the second target frequency calculation formula to obtain the second target operating frequency, and the second target operating frequency is used as the target operating frequency; When the absolute value of the frequency difference exceeds the second preset frequency deviation, the first operating frequency, the second operating frequency, the operating frequency change time, the preset fourth frequency compensation coefficient, the preset fifth frequency compensation coefficient and the preset sixth frequency compensation coefficient are substituted into the third target frequency calculation formula to obtain the third target operating frequency, and the third target operating frequency is used as the target operating frequency.

3. The air conditioner according to claim 2, characterized in that: The first target frequency calculation formula includes: Among them, the Fre c1 is the first target operating frequency, the Fre is the first operating frequency, the Fre1 is the second operating frequency, and the A1 is the preset first frequency compensation coefficient; The second target frequency calculation formula includes: Among them, the Fre c2 is the second target operating frequency, Fre is the first operating frequency, Fre1 is the second operating frequency, A2 is the preset second frequency compensation coefficient, B2 is the preset third frequency compensation coefficient, and t1 is the operating frequency change time; The third target frequency calculation formula includes: Among them, the Fre c3 is the third target operating frequency, Fre is the first operating frequency, Fre1 is the second operating frequency, A3 is the preset fourth frequency compensation coefficient, B3 is the preset fifth frequency compensation coefficient, and C3 is the preset sixth frequency compensation coefficient.

4. The air conditioner according to claim 1, characterized in that: When determining the target indoor coil temperature according to the target suction temperature and the target exhaust temperature, the controller is configured as follows: Obtaining a first indoor coil temperature and a second indoor coil temperature; Substituting the first indoor coil temperature, the second indoor coil temperature and the preset first coil temperature compensation coefficient into a first target indoor coil temperature calculation formula to obtain a first target indoor coil temperature, and using the first target indoor coil temperature as the target indoor coil temperature; Substituting the first indoor coil temperature, the second indoor coil temperature, the target suction temperature, the preset second coil temperature compensation coefficient, and the preset third coil temperature compensation coefficient into the second target indoor coil temperature calculation formula to obtain the second target indoor coil temperature, and using the second target indoor coil temperature as the target indoor coil temperature; The first indoor coil temperature, the second indoor coil temperature, the target exhaust temperature, the preset fourth coil temperature compensation coefficient, and the preset fifth coil temperature compensation coefficient are substituted into the third target indoor coil temperature calculation formula to obtain the third target indoor coil temperature, and the third target indoor coil temperature is used as the target indoor coil temperature.

5. The air conditioner according to claim 4, characterized in that: The first target indoor coil temperature calculation formula includes: Among them, the T incoil_c_1 is the first target indoor coil temperature, the T incoil is the first indoor coil temperature, the T incoil_1 is the second indoor coil temperature, To preset the first coil temperature compensation coefficient; The second target indoor coil temperature calculation formula includes: Among them, T incoil_c_2 is the second target indoor coil temperature, T incoil is the first indoor coil temperature, the T incoil_1 is the second indoor coil temperature, To preset the second coil temperature compensation coefficient, is the preset third coil temperature compensation coefficient, T s_c is the target suction temperature; The third target indoor coil temperature calculation formula includes: Among them, T incoil_c_3 is the third target indoor coil temperature, T incoil is the first indoor coil temperature, the T incoil_1 is the second indoor coil temperature, T d_c is the target exhaust temperature, To preset the temperature compensation coefficient of the fourth coil, It is the preset fifth coil temperature compensation coefficient.

6. The air conditioner according to claim 1, characterized in that: When determining the target indoor ambient temperature according to the target intake temperature and the target exhaust temperature, the controller is configured as follows: Acquire a first indoor ambient temperature and a second indoor ambient temperature; Substituting the first indoor ambient temperature, the second indoor ambient temperature and the preset first indoor temperature compensation coefficient into a first target indoor ambient temperature calculation formula to obtain a first target indoor ambient temperature, and using the first target indoor ambient temperature as the target indoor ambient temperature; Substitute the first indoor ambient temperature, the second indoor ambient temperature, the first indoor coil temperature, the preset second air temperature compensation coefficient, the preset third air temperature compensation coefficient and the preset sixth coil temperature compensation coefficient into a second target indoor ambient temperature calculation formula to obtain a second target indoor ambient temperature, and use the second target indoor ambient temperature as the target indoor ambient temperature; The first indoor ambient temperature, the second indoor ambient temperature, the target exhaust temperature, the preset fourth air temperature compensation coefficient, the preset fifth air temperature compensation coefficient and the preset exhaust temperature compensation coefficient are substituted into the third target indoor ambient temperature calculation formula to obtain the third target indoor ambient temperature, and the third target indoor ambient temperature is used as the target indoor ambient temperature.

7. The air conditioner according to claim 6, characterized in that: The first target indoor ambient temperature calculation formula includes: Among them, T air_c_1 is the first target indoor ambient temperature, T air is the first indoor ambient temperature, T air_1 is the second indoor ambient temperature, is to preset a first indoor temperature compensation coefficient; The second target indoor ambient temperature calculation formula includes: Among them, T air_c_2 is the second target indoor ambient temperature, T air is the first indoor ambient temperature, T air_1 is the second indoor ambient temperature, T incoil is the first indoor coil temperature, To preset the second air temperature compensation coefficient, is the preset third air temperature compensation coefficient, c2 is the preset sixth coil temperature compensation coefficient; The third target indoor environment temperature calculation formula includes: Among them, T air_c_3 is the third target indoor ambient temperature, T air is the first indoor ambient temperature, T air_1 is the second indoor ambient temperature, is the target exhaust temperature, To preset the fourth air temperature compensation coefficient, is the preset fifth air temperature compensation coefficient, and c3 is the preset exhaust temperature compensation coefficient.

8. The air conditioner according to claim 7, characterized in that: When determining the heat transfer coefficient of the air conditioner according to the rotation speed, the target operating frequency and the target indoor ambient temperature, the controller is configured as follows: When the air conditioner is in cooling mode or dehumidification mode, the rotation speed, the target operating frequency, the first target indoor ambient temperature and the second target indoor ambient temperature are substituted into a first heat transfer coefficient calculation formula to obtain a cooling mode heat transfer coefficient; When the air conditioner is in a heating mode, the rotation speed, the target operating frequency, the first target indoor ambient temperature and the third target indoor ambient temperature are substituted into a second heat transfer coefficient calculation formula to obtain a heating mode heat transfer coefficient.

9. The air conditioner according to claim 8, characterized in that: The first heat transfer coefficient calculation formula includes: K cold =A K_1 *V a_1 +B K_1 *(T air_c_1 +C K_1 *T air_c_2 )+D K_1 *(Fre c ) b_2 , where K cold is the heat transfer coefficient of cooling mode, V a_1 is the rotation speed, Fre c is the target operating frequency, T air_c_1 is the first target indoor ambient temperature, T air_c_2 is the second target indoor ambient temperature, A K_1 is the preset first speed compensation coefficient, B K_1 is the preset first target ambient temperature compensation coefficient, C K_1 Preset the second target ambient temperature compensation coefficient, D K_1 To preset a first frequency compensation coefficient; The second heat transfer coefficient calculation formula includes: K heat =A K_2 *V a_2 +B K_2 *(T air_c_1 +C K_2 *T air_c_3 )+D K_2 *(Fre c ) b_2 , where K heat is the heat transfer coefficient of the heating mode, V a_2 is the rotation speed, Fre c is the target operating frequency, T air_c_1 is the first target indoor ambient temperature, T air_c_3 is the third target indoor ambient temperature, A K_2 is the preset second speed compensation coefficient, B K_2 is the preset third target ambient temperature compensation coefficient, C K_2 is the preset fourth target ambient temperature compensation coefficient, D K_2 The second frequency compensation coefficient is preset.

10. The air conditioner according to claim 9, characterized in that: When determining the cooling capacity or heating capacity of the air conditioner in the current operation mode according to the heat transfer coefficient, the target indoor ambient temperature, and the target indoor coil temperature, the controller is configured as follows: Substituting the cooling mode heat transfer coefficient, the first target indoor ambient temperature, the second target indoor ambient temperature, the first target indoor coil temperature, the second target indoor coil temperature, the preset cooling capacity compensation coefficient and the preset heat exchange area into the cooling capacity calculation formula to determine the cooling capacity of the air conditioner; The heating mode heat transfer coefficient, the first target indoor ambient temperature, the third target indoor ambient temperature, the first target indoor coil temperature, the third target indoor coil temperature, the preset heating compensation coefficient and the preset heat exchange area are substituted into the heating amount calculation formula to determine the heating amount of the air conditioner.

11. The air conditioner according to claim 10, characterized in that: The cooling capacity calculation formula includes: Q cold =a cold *K cold *(T air_c_1 -T incoil_c_1 )*A+K cold *(T air_c_2 -T incoil_c_2 )*A+C Q_cold Among them, Q cold is the cooling capacity, the a cold is the preset first heat transfer compensation coefficient, K cold is the heat transfer coefficient of cooling mode, T air_c_1 is the first target indoor ambient temperature, T air_c_2 is the second target indoor ambient temperature, T incoil_c_1 is the first target indoor coil temperature, T incoil_c_2 is the second target indoor coil temperature, A is the preset heat exchange area, C Q_cold It is the preset cooling capacity compensation coefficient; The heating calculation formula includes: Q heat =a heat *K heat *(T incoil_c_1 -T air_c_1 )+K heat *(T incoil_c_3 -T air_c_3 )*A+C Q_heat Among them, Q heat is the heating amount, the a heat is the preset second heat transfer compensation coefficient, K heat is the heat transfer coefficient of the heating mode, T air_c_1 is the first target indoor ambient temperature, T air_c_3 is the third target indoor ambient temperature, T incoil_c_1 is the first target indoor coil temperature, T incoil_c_3 is the third target indoor coil temperature, A is the preset heat exchange area, C Q_heat It is the preset heating amount compensation coefficient.

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