Air conditioner and capacity calculation method thereof

Abstract

The invention provides an air conditioner and a capacity calculation method thereof, and the air conditioner comprises a controller which is configured to obtain an operation mode, a first coil pipe temperature, a second coil pipe temperature, a refrigerating capacity correction coefficient, a heating capacity correction coefficient and a temperature fitting coefficient of the air conditioner; when the air conditioner is in a refrigerating operation mode, the refrigerating capacity of the air conditioner is determined according to the first coil pipe temperature, the second coil pipe temperature, the refrigerating capacity correction coefficient, the temperature fitting coefficient and a refrigerating capacity calculation formula of the air conditioner; when the air conditioner is in the heating operation mode, the heating capacity of the air conditioner is determined according to the first coil pipe temperature, the second coil pipe temperature, the heating capacity correction coefficient, the temperature fitting coefficient and the heating capacity calculation formula of the air conditioner, the problem that the air enthalpy value is greatly influenced by the outdoor environment is avoided, an additional detection device does not need to be additionally arranged on the indoor side, and the detection efficiency is improved. Therefore, the hardware occupied space and the hardware cost of the air conditioner are reduced, and meanwhile the capacity calculation accuracy of the air conditioner is improved.

Description

Technical Field

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

[0002] Since air conditioners must have a capacity calculation function, and air conditioners without this function are not allowed to be sold in some regions and countries, currently, air conditioners detect the temperature and pressure of the evaporator inlet and outlet to determine the inlet enthalpy and outlet enthalpy of the evaporator to calculate the air conditioner capacity based on the enthalpy difference method; or detect the inlet and outlet air enthalpy values ​​of the air conditioner and calculate the air conditioner capacity by the enthalpy difference method.

[0003] 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 higher cost of the air conditioner. In particular, the inlet and outlet air enthalpy values ​​are greatly affected by the ambient temperature, and the installation position and detection accuracy requirements of the detection device are high, further increasing the cost of the air conditioner. Summary of the invention

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

[0005] To this end, one object of the present invention is to propose an air conditioner, which uses existing devices to detect evaporation temperature and condensation temperature, and there is no need to detect the enthalpy of outdoor inlet and outlet air, thereby avoiding the problem that the air enthalpy is greatly affected by the outdoor environment. There is also no need to add additional detection devices on the indoor side, thereby improving the accuracy of the air conditioner capacity calculation while reducing the hardware space occupied and hardware cost of the air conditioner.

[0006] To this end, a second object of the present invention is to provide a method for calculating the capacity of an air conditioner.

[0007] In order to achieve the above-mentioned object, an embodiment of the first aspect of the present invention provides an air conditioner, the air conditioner comprising: a refrigerant circulation loop, so that the refrigerant circulates in the circulation loop among a compressor, a condenser and an evaporator; a compressor, used to compress low-temperature and low-pressure refrigerant gas into high-temperature and high-pressure refrigerant gas and discharge it to the condenser; a first coil temperature sensor, used to detect the first coil temperature of the evaporator; a second coil temperature sensor, used to detect the second coil temperature of the condenser; a controller, configured to: obtain the operation mode of the air conditioner, the first coil temperature, the second coil temperature, the cooling capacity correction coefficient, the heating capacity correction coefficient and the temperature fitting coefficient; when the air conditioner is in the cooling operation mode, the cooling capacity of the air conditioner is determined according to the first coil temperature, the second coil temperature, the cooling capacity correction coefficient, the temperature fitting coefficient and the cooling capacity calculation formula of the air conditioner; when the air conditioner is in the heating operation mode, the heating capacity of the air conditioner is determined according to the first coil temperature, the second coil temperature, the heating capacity correction coefficient, the temperature fitting coefficient and the heating capacity calculation formula of the air conditioner.

[0008] According to the air conditioner of the embodiment of the present invention, since the air conditioner has a device for detecting the evaporating temperature and the condensing temperature, the first coil temperature of the evaporator and the second coil temperature of the condenser are obtained by using the existing device, and the real-time capacity of the air conditioner in different operating modes is calculated in combination with the operating mode of the air conditioner, the cooling capacity correction factor and the heating capacity correction factor mass flow rate. The evaporating temperature and the condensing temperature are detected by using the existing device, and there is no need to detect the enthalpy values ​​of the outdoor inlet and outlet air, thereby avoiding the problem that the air enthalpy value is greatly affected by the outdoor environment. There is also no need to add additional detection devices on the indoor side. Therefore, while reducing the hardware space occupied and the hardware cost of the air conditioner, the accuracy of the air conditioner capacity calculation is improved.

[0009] In some embodiments, when the air conditioner is in a cooling operation mode, when the cooling capacity of the air conditioner is determined based on the first coil temperature, the second coil temperature, the cooling capacity correction coefficient, the temperature fitting coefficient and the cooling capacity calculation formula of the air conditioner, the controller is configured to: determine the initial cooling capacity of the air conditioner based on the first coil temperature, the second coil temperature and the temperature fitting coefficient; substitute the initial cooling capacity and the cooling capacity correction coefficient into the cooling capacity calculation formula to determine the cooling capacity of the air conditioner.

[0010] In some embodiments, the refrigeration capacity calculation formula includes:

[0011] Q 制冷量 =α c (α1+α2*Tz+α3*Tl+α4*Tz 2 +α5*Tz*Tl+α6*Tl2 +α7*Tz 3 +α8

[0012] *Tz 2 *Tl+α9*Tz*Tl 2 +α 10 *Tl 3 )

[0013] Wherein, Qc is the cooling capacity, α c is the cooling capacity correction factor, the α1 to α 10 is the temperature fitting coefficient, Tz is the first coil temperature, and Tl is the second coil temperature.

[0014] In some embodiments, when the air conditioner is in the heating operation mode, when the heating amount of the air conditioner is determined according to the first coil temperature, the second coil temperature, the heating amount correction coefficient, the temperature fitting coefficient and the heating capacity calculation formula of the air conditioner, the controller is configured to: determine the initial heating amount of the air conditioner according to the first coil temperature, the second coil temperature and the temperature fitting coefficient; substitute the initial heating amount and the heating amount correction coefficient into the heating capacity calculation formula to determine the heating amount of the air conditioner.

[0015] In some embodiments, the heating capacity calculation formula includes:

[0016] Q 制热量 =α h (α1+α2*Tz+α3*Tl+α4*Tz 2 +α5*Tz*Tl+α6*Tl 2 +α7*Tz 3 +α8

[0017] *Tz 2 *Tl+α9*Tz*Tl 2 +α 10 *Tl 3 )

[0018] Wherein, Qh is the heating capacity, and α h is the heating capacity correction coefficient, and the 10 is the temperature fitting coefficient, Tz is the first coil temperature, and Tl is the second coil temperature.

[0019] In some embodiments, the controller is further configured to: send the cooling capacity or heating capacity to a user terminal and / or display it on a display screen of the air conditioner.

[0020] In order to achieve the above-mentioned purpose, an embodiment of the second aspect of the present invention proposes a method for calculating the capacity of an air conditioner, the method comprising: obtaining the operating mode, the first coil temperature, the second coil temperature, the cooling capacity correction coefficient, the heating amount correction coefficient and the temperature fitting coefficient of the air conditioner; when the air conditioner is in a cooling operation mode, the cooling capacity of the air conditioner is determined according to the first coil temperature, the second coil temperature, the cooling capacity correction coefficient, the temperature fitting coefficient and the cooling capacity calculation formula of the air conditioner; when the air conditioner is in a heating operation mode, the heating amount of the air conditioner is determined according to the first coil temperature, the second coil temperature, the heating amount correction coefficient, the temperature fitting coefficient and the heating capacity calculation formula of the air conditioner.

[0021] According to the capacity calculation method of the air conditioner in the embodiment of the present invention, since the air conditioner has a device for detecting the evaporating temperature and the condensing temperature, the first coil temperature of the evaporator and the second coil temperature of the condenser are obtained by using the existing device, and the real-time capacity of the air conditioner in different operating modes is calculated in combination with the operating mode of the air conditioner, the cooling capacity correction factor and the heating capacity correction factor mass flow. The evaporating temperature and the condensing temperature are detected by using the existing device, and there is no need to detect the enthalpy values ​​of the outdoor inlet and outlet air, thereby avoiding the problem that the air enthalpy value is greatly affected by the outdoor environment. There is also no need to add additional detection devices on the indoor side. Therefore, while reducing the hardware space occupied and the hardware cost of the air conditioner, the accuracy of the air conditioner capacity calculation is improved.

[0022] In some embodiments, when the air conditioner is in a cooling operation mode, the cooling capacity of the air conditioner is determined according to the first coil temperature, the second coil temperature, the cooling capacity correction coefficient, the temperature fitting coefficient and the cooling capacity calculation formula of the air conditioner, including: determining the initial cooling capacity of the air conditioner according to the first coil temperature, the second coil temperature and the temperature fitting coefficient; substituting the initial cooling capacity and the cooling capacity correction coefficient into the cooling capacity calculation formula to determine the cooling capacity of the air conditioner.

[0023] In some embodiments, the refrigeration capacity calculation formula includes:

[0024] Q 制冷量 =α c (α1+α2*Tz+α3*Tl+α4*Tz 2 +α5*Tz*Tl+α6*Tl 2 +α7*Tz 3 +α8

[0025] *Tz 2 *Tl+α9*Tz*Tl 2 +α 10 *Tl 3 )

[0026] Wherein, Qc is the cooling capacity, and α1 to α 10 is the temperature fitting coefficient, Tz is the first coil temperature, and Tl is the second coil temperature.

[0027] In some embodiments, when the air conditioner is in the heating operation mode, the heating amount of the air conditioner is determined according to the first coil temperature, the second coil temperature, the heating amount correction coefficient, the temperature fitting coefficient and the heating capacity calculation formula of the air conditioner, including: determining the initial heating amount of the air conditioner according to the first coil temperature, the second coil temperature and the temperature fitting coefficient; substituting the initial heating amount and the heating amount correction coefficient into the heating capacity calculation formula to determine the heating amount of the air conditioner.

[0028] 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

[0029] 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:

[0030] Figure 1 is a structural schematic diagram of an air conditioner according to an embodiment of the present invention;

[0031] Figure 2 is a flow chart of a method for calculating the cooling capacity of an air conditioner according to an embodiment of the present invention;

[0032] Figure 3 is a flow chart of a method for calculating the heating capacity of an air conditioner according to an embodiment of the present invention;

[0033] Figure 4 is a flow chart of a method for calculating the cooling capacity of an air conditioner according to an embodiment of the present invention;

[0034] Figure 5 is a flow chart of a method for calculating the heating capacity of an air conditioner according to an embodiment of the present invention;

[0035] 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;

[0036] Figure 7 is a flow chart of a method for calculating the capacity of an air conditioner according to an embodiment of the present invention.

[0037] Reference numerals: air conditioner 1;

[0038] Refrigerant circulation circuit 11 ; compressor 12 ; first coil temperature sensor 13 ; second coil temperature sensor 14 ; controller 15 . DETAILED DESCRIPTION

[0039] 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.

[0040] 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.

[0041] 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.

[0042] 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.

[0043] 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.

[0044] 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.

[0045] Reference below Figure 1-Figure 6 An air conditioner 1 according to an embodiment of the present invention will be described.

[0046] like Figure 1 As shown, the air conditioner 1 of the embodiment of the present invention comprises: a refrigerant circulation circuit 11, a compressor 12, a first coil temperature sensor 13, a second coil temperature sensor 14 and a controller 15, wherein:

[0047] The refrigerant circulation loop 11 allows the refrigerant to circulate in the compressor 12, the condenser and the evaporator in the circulation loop; the compressor 12 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 first coil temperature sensor 13 is used to detect the first coil temperature of the evaporator; the second coil temperature sensor 14 is used to detect the second coil temperature of the condenser; the controller 15 is configured to: obtain the operation mode of the air conditioner 1, the first coil temperature, the second coil temperature, the cooling capacity correction coefficient, the heating capacity correction coefficient and the temperature fitting coefficient; when the air conditioner 1 is in the cooling operation mode, the cooling capacity of the air conditioner 1 is determined according to the first coil temperature, the second coil temperature, the cooling capacity correction coefficient, the temperature fitting coefficient and the cooling capacity calculation formula of the air conditioner 1; when the air conditioner 1 is in the heating operation mode, the heating capacity of the air conditioner 1 is determined according to the first coil temperature, the second coil temperature, the heating capacity correction coefficient, the temperature fitting coefficient and the heating capacity calculation formula of the air conditioner 1.

[0048] In the embodiment, after the air conditioner 1 is turned on and operated, the controller 15 obtains the operating mode of the air conditioner 1 in real time, and the operating mode includes, for example, a cooling operating mode and a heating operating mode; because the coil temperatures of the evaporator and the condenser will change when the compressor 12 compresses the low-temperature and low-pressure refrigerant gas into a high-temperature and high-pressure refrigerant gas and discharges it to the condenser, the controller 15 obtains the first coil temperature of the evaporator in real time according to the first coil temperature sensor 13, for example, recorded as Tz, to determine the evaporation temperature of the air conditioner 1; the controller 15 obtains the second coil temperature of the condenser in real time according to the second coil temperature sensor 14, for example, recorded as Tl, to determine the condensation temperature of the air conditioner 1; obtains the refrigeration capacity correction factor preset in the controller 15, for example, recorded as α c , heating capacity correction coefficient, for example, is denoted as α h and the temperature fitting coefficients are denoted as α1 to α 10 , where the cooling capacity correction factor α c , Heating capacity correction coefficient α h and temperature fitting coefficients α1 to α 10 The correction coefficient and the preset value are preset in the controller 15 based on the experimental data.

[0049] After obtaining the above parameters, the capacity calculation formula of the air conditioner 1 is used and combined with the above parameters to determine the capacity of the air conditioner 1 under different operating modes. For example, when the operating mode of the air conditioner 1 is in the cooling mode, the first coil temperature Tz of the evaporator, the second coil temperature Tl of the condenser, and the cooling capacity correction coefficient α are calculated. c and temperature fitting coefficients α1 to α 10The refrigeration capacity calculation formula of the air conditioner 1 is introduced to determine the refrigeration capacity of the air conditioner 1, for example, recorded as Qc; when the operation mode of the air conditioner 1 is in the heating operation mode, the first coil temperature Tz of the evaporator, the second coil temperature Tl of the condenser, and the heating correction coefficient α h and temperature fitting coefficients α1 to α 10 The heating capacity calculation formula of the air conditioner 1 is brought into play to determine the heating capacity of the air conditioner 1, for example, recorded as Qh, so as to determine the real-time capacity of the air conditioner 1 in different operating modes.

[0050] Reference below Figure 2 A method for calculating the cooling capacity of an air conditioner according to an embodiment of the present invention is described.

[0051] Step S11, the air conditioner is turned on and operated.

[0052] Step S12, obtaining the operation mode, the first coil temperature, the second coil temperature, the cooling capacity correction coefficient, the heating capacity correction coefficient and the temperature fitting coefficient of the air conditioner.

[0053] Step S13, determining whether the air conditioner is in cooling operation mode, if so, executing step S15; otherwise, executing step S12.

[0054] Step S15, determining the cooling capacity of the air conditioner according to the first coil temperature, the second coil temperature, the cooling capacity correction coefficient, the temperature fitting coefficient and the cooling capacity calculation formula of the air conditioner.

[0055] Reference below Figure 3 A method for calculating the heating amount of an air conditioner according to an embodiment of the present invention is described.

[0056] Step S11, the air conditioner is turned on and operated.

[0057] Step S12, obtaining the operation mode, the first coil temperature, the second coil temperature, the cooling capacity correction coefficient, the heating capacity correction coefficient and the temperature fitting coefficient of the air conditioner.

[0058] Step S13, determining whether the air conditioner is in cooling operation mode, if so, executing step S12; otherwise, executing step S16.

[0059] Step S16, determining the heating capacity of the air conditioner according to the first coil temperature, the second coil temperature, the heating capacity correction coefficient, the temperature fitting coefficient and the heating capacity calculation formula of the air conditioner.

[0060] According to the air conditioner 1 of the embodiment of the present invention, since the air conditioner 1 has a device for detecting the evaporating temperature and the condensing temperature, after the air conditioner 1 is turned on and operated, the first coil temperature of the evaporator and the second coil temperature of the condenser are obtained by using the existing device, and the real-time capacity of the air conditioner 1 under different operating modes is calculated in combination with the operating mode of the air conditioner 1, the cooling capacity correction factor and the heating capacity correction factor mass flow rate. The evaporating temperature and the condensing temperature of the air conditioner 1 are detected by using the existing device, and there is no need to detect the inlet and outlet air enthalpy values ​​on the outdoor side of the air conditioner 1, thereby avoiding the problem that the air enthalpy value is greatly affected by the outdoor environment, and there is no need to add additional detection devices on the indoor side of the air conditioner 1. Therefore, while reducing the hardware space occupied and the hardware cost of the air conditioner 1, the accuracy of the capacity calculation of the air conditioner 1 is improved.

[0061] In some embodiments, when the air conditioner 1 is in a cooling operation mode, when the cooling capacity of the air conditioner 1 is determined based on the first coil temperature, the second coil temperature, the cooling capacity correction coefficient, the temperature fitting coefficient and the cooling capacity calculation formula of the air conditioner 1, the controller 15 is configured to: determine the initial cooling capacity of the air conditioner 1 based on the first coil temperature, the second coil temperature and the temperature fitting coefficient; substitute the initial cooling capacity and the cooling capacity correction coefficient into the cooling capacity calculation formula to determine the cooling capacity of the air conditioner 1.

[0062] In an embodiment, Figure 4 FIG. 1 is a flow chart of a method for calculating the cooling capacity of an air conditioner according to an embodiment of the present invention. When the operation mode of the air conditioner 1 is in the cooling operation mode, according to the first coil temperature Tz of the evaporator, the second coil temperature Tl of the condenser and the temperature fitting coefficients α1 to α 10 Determine the initial cooling capacity of air conditioner 1, that is, α1+α2*Tz+α3*Tl+α4*Tz 2 +α5*Tz*Tl+α6*Tl 2 +α7*Tz 3 +α8*Tz 2 *Tl+α9*

[0063] Tz*T 2 +α 10 *Tl 3 After determining the initial cooling capacity of the air conditioner 1, the initial cooling capacity of the air conditioner 1 and the cooling capacity correction coefficient α c The cooling capacity calculation formula is brought into play to determine the cooling capacity Qc of the air conditioner 1, thereby determining the real-time capacity of the air conditioner 1 when it is in cooling mode.

[0064] Reference below Figure 4 A method for calculating the cooling capacity of an air conditioner according to an embodiment of the present invention is described.

[0065] Step S11, the air conditioner is turned on and operated.

[0066] Step S12, obtaining the operation mode, the first coil temperature, the second coil temperature, the cooling capacity correction coefficient, the heating capacity correction coefficient and the temperature fitting coefficient of the air conditioner.

[0067] Step S13, determining whether the air conditioner is in cooling operation mode, if so, executing step S14; otherwise, executing step S12.

[0068] Step S14, determining the initial cooling capacity of the air conditioner according to the first coil temperature, the second coil temperature and the temperature fitting coefficient.

[0069] Step S15, the initial cooling capacity and the cooling capacity correction coefficient are substituted into the cooling capacity calculation formula to determine the cooling capacity of the air conditioner.

[0070] In some embodiments, the cooling capacity calculation formula includes:

[0071] Q 制冷量 =α c (α1+α2*Tz+α3*Tl+α4*Tz 2 +α5*Tz*Tl+α6*Tl 2 +α7*Tz 3 +α8

[0072] *Tz 2 *Tl+α9*Tz*Tl 2 +α 10 *Tl 3 )

[0073] Among them, Qc is the cooling capacity, α c is the cooling capacity correction factor, α1 to α 10 is the temperature fitting coefficient, Tz is the first coil temperature, and Tl is the second coil temperature.

[0074] In the embodiment, the initial cooling capacity of the air conditioner 1 is obtained, that is, α1+α2*Tz+α3*Tl+α4*Tz 2 +α5*Tz*Tl+α6*Tl 2 +α7*Tz 3 +α8*Tz 2 *Tl+α9*Tz*Tl 2 +α 10 *Tl 3 and cooling capacity correction factor α c Then, the above parameters are substituted into the cooling capacity calculation formula to determine the cooling capacity Qc of the air conditioner 1. The cooling capacity calculation formula is as follows:

[0075] Q 制冷量 =α c (α1+α2*Tz+α3*Tl+α4*Tz 2+α5*Tz*Tl+α6*Tl 2 +α7*Tz 3 +α8

[0076] *Tz 2 *Tl+α9*Tz*Tl 2 +α 10 *Tl 3 )

[0077] By calculating the cooling capacity Qc of the air conditioner 1, the real-time capacity of the air conditioner 1 when in the cooling mode is determined.

[0078] In some embodiments, when the air conditioner 1 is in the heating operation mode, when the heating capacity of the air conditioner 1 is determined according to the first coil temperature, the second coil temperature, the heating capacity correction coefficient, the temperature fitting coefficient and the heating capacity calculation formula of the air conditioner 1, the controller 15 is configured to: determine the initial heating capacity of the air conditioner 1 according to the first coil temperature, the second coil temperature and the temperature fitting coefficient; substitute the initial heating capacity and the heating capacity correction coefficient into the heating capacity calculation formula to determine the heating capacity of the air conditioner 1.

[0079] In an embodiment, Figure 5 FIG. 1 is a flow chart of a method for calculating the cooling capacity of an air conditioner according to an embodiment of the present invention. When the operation mode of the air conditioner 1 is in the heating operation mode, according to the first coil temperature Tz of the evaporator, the second coil temperature Tl of the condenser and the temperature fitting coefficients α1 to α 10 Determine the initial heating capacity of air conditioner 1, that is, α1+α2*Tz+α3*Tl+α4*Tz 2 +α5*Tz*Tl+α6*Tl 2 +α7*Tz 3 +α8*Tz 2 *Tl+α9*

[0080] Tz*T 2 +α 10 *Tl 3 After determining the initial heating capacity of the air conditioner 1, the initial heating capacity of the air conditioner 1 and the heating correction coefficient α h The heating capacity calculation formula is brought into play to determine the heating capacity Qh of the air conditioner 1, thereby determining the real-time capacity of the air conditioner 1 when it is in the heating mode.

[0081] Reference below Figure 5 A method for calculating the heating amount of an air conditioner according to an embodiment of the present invention is described.

[0082] Step S11, the air conditioner is turned on and operated.

[0083] Step S12, obtaining the operation mode, the first coil temperature, the second coil temperature, the cooling capacity correction coefficient, the heating capacity correction coefficient and the temperature fitting coefficient of the air conditioner.

[0084] Step S13, determining whether the air conditioner is in cooling operation mode, if so, executing step S12; otherwise, executing step S16.

[0085] Step S16, determining the initial heating amount of the air conditioner according to the first coil temperature, the second coil temperature and the temperature fitting coefficient.

[0086] Step S17, the initial heating amount and the heating amount correction coefficient are substituted into the heating capacity calculation formula to determine the heating amount of the air conditioner.

[0087] In some embodiments, the heating capacity calculation formula includes:

[0088] Q 制热量 =α h (α1+α2*Tz+α3*Tl+α4*Tz 2 +α5*Tz*Tl+α6*Tl 2 +α7*Tz 3 +α8

[0089] *Tz 2 *Tl+α9*Tz*Tl 2 +α 10 *Tl 3 )

[0090] Among them, Qh is the heating capacity, α h is the heating capacity correction coefficient, α1 to α 10 is the temperature fitting coefficient, Tz is the first coil temperature, and Tl is the second coil temperature.

[0091] In the embodiment, the initial heating capacity of the air conditioner 1 is obtained, that is, α1+α2*Tz+α3*Tl+α4*Tz 2 +α5*Tz*Tl+α6*Tl 2 +α7*Tz 3 +α8*Tz 2 *Tl+α9*Tz*Tl 2 +α 10 *Tl 3 and heating capacity correction factor α h Then, the above parameters are substituted into the heating capacity calculation formula to determine the heating capacity Qh of the air conditioner 1. The heating capacity calculation formula is as follows:

[0092] Q 制热量 =α h (α1+α2*Tz+α3*Tl+α4*Tz 2+α5*Tz*Tl+α6*Tl 2 +α7*Tz 3 +α8

[0093] *Tz 2 *Tl+α9*Tz*Tl 2 +α 10 *Tl 3 )

[0094] By calculating the heating amount Qh of the air conditioner 1, the real-time capacity of the air conditioner 1 when in the heating mode is determined.

[0095] By calculating the cooling capacity Qc and the heating capacity Qh of the air conditioner 1, the real-time capacity of the air conditioner 1 in different operation modes is determined.

[0096] In some embodiments, the controller 15 is further configured to: send the cooling capacity or heating capacity to a user terminal and / or display it on a display screen of the air conditioner 1 .

[0097] In an embodiment, after obtaining the cooling capacity Qc or heating capacity Qh of the air conditioner 1, the controller 15 sends the cooling capacity Qc or heating capacity Qh to a user terminal such as a mobile phone APP, and / or sends it to the display screen of the air conditioner 1 for display, so that the user can understand the real-time status of the air conditioner 1.

[0098] 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.

[0099] 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 S18.

[0100] Step S11, the air conditioner is turned on and operated.

[0101] Step S12, obtaining the operation mode, the first coil temperature, the second coil temperature, the cooling capacity correction coefficient, the heating capacity correction coefficient and the temperature fitting coefficient of the air conditioner.

[0102] Step S13, determining whether the air conditioner is in cooling operation mode, if so, executing step S14; otherwise, executing step S16.

[0103] Step S14, determining the initial cooling capacity of the air conditioner according to the first coil temperature, the second coil temperature and the temperature fitting coefficient.

[0104] Step S15, the initial cooling capacity and the cooling capacity correction coefficient are substituted into the cooling capacity calculation formula to determine the cooling capacity of the air conditioner.

[0105] Step S16, determining the initial heating amount of the air conditioner according to the first coil temperature, the second coil temperature and the temperature fitting coefficient.

[0106] Step S17, the initial heating amount and the heating amount correction coefficient are substituted into the heating capacity calculation formula to determine the heating amount of the air conditioner.

[0107] Step S18, sending the cooling capacity or heating capacity to the user terminal and / or displaying it on the display screen of the air conditioner.

[0108] According to the air conditioner 1 of the embodiment of the present invention, since the air conditioner 1 has a device for detecting the evaporating temperature and the condensing temperature, after the air conditioner 1 is turned on and operated, the first coil temperature of the evaporator and the second coil temperature of the condenser are obtained by using the existing device, and the real-time capacity of the air conditioner 1 under different operating modes is calculated in combination with the operating mode of the air conditioner 1, the cooling capacity correction factor and the heating capacity correction factor mass flow rate. The evaporating temperature and the condensing temperature of the air conditioner 1 are detected by using the existing device, and there is no need to detect the inlet and outlet air enthalpy values ​​on the outdoor side of the air conditioner 1, thereby avoiding the problem that the air enthalpy value is greatly affected by the outdoor environment, and there is no need to add additional detection devices on the indoor side of the air conditioner 1. Therefore, while reducing the hardware space occupied and the hardware cost of the air conditioner 1, the accuracy of the capacity calculation of the air conditioner 1 is improved.

[0109] Combine the following Figure 7 A method for calculating the capacity of an air conditioner according to an embodiment of the present invention is described.

[0110] like Figure 7 As shown, the capacity calculation method of the air conditioner according to the embodiment of the present invention at least includes steps S1 to S3.

[0111] Step S1, obtaining the operation mode, the first coil temperature, the second coil temperature, the cooling capacity correction coefficient, the heating capacity correction coefficient and the temperature fitting coefficient of the air conditioner.

[0112] Among them, the cooling capacity correction factor α c , Heating capacity correction coefficient α h and temperature fitting coefficients α1 to α 10 Based on the experimental data, the correction coefficients and preset values ​​are preset in the controller.

[0113] In the embodiment, after the air conditioner is turned on and operated, the controller obtains the operating mode of the air conditioner in real time, and the operating mode includes, for example, a cooling operating mode and a heating operating mode; because the coil temperatures of the evaporator and the condenser will change when the compressor compresses the low-temperature and low-pressure refrigerant gas into a high-temperature and high-pressure refrigerant gas and discharges it to the condenser, the controller obtains the first coil temperature of the evaporator in real time according to the first coil temperature sensor, for example, recorded as Tz, and the controller obtains the second coil temperature of the condenser in real time according to the second coil temperature sensor, for example, recorded as Tl, to determine the evaporation temperature and condensation temperature of the air conditioner 1; obtains the refrigeration capacity correction coefficient preset in the controller, for example, recorded as α c , heating capacity correction coefficient, for example, is denoted as α h and the temperature fitting coefficients are denoted as α1 to α 10 .

[0114] Step S2, when the air conditioner is in cooling operation mode, the cooling capacity of the air conditioner is determined according to the first coil temperature, the second coil temperature, the cooling capacity correction coefficient, the temperature fitting coefficient and the cooling capacity calculation formula of the air conditioner.

[0115] In the embodiment, after obtaining the above parameters, the capacity calculation formula of the air conditioner is used and combined with the above parameters to determine the capacity of the air conditioner corresponding to different operating modes. For example, when the operating mode of the air conditioner is in the cooling operation mode, the first coil temperature Tz of the evaporator, the second coil temperature Tl of the condenser, and the cooling capacity correction coefficient α are calculated. c and temperature fitting coefficients α1 to α 10 The cooling capacity calculation formula of the air conditioner is introduced to determine the cooling capacity of the air conditioner, for example, recorded as Qc.

[0116] Step S3, when the air conditioner is in the heating operation mode, the heating capacity of the air conditioner is determined according to the first coil temperature, the second coil temperature, the heating capacity correction coefficient, the temperature fitting coefficient and the heating capacity calculation formula of the air conditioner.

[0117] In the embodiment, when the operation mode of the air conditioner is in the heating operation mode, the first coil temperature Tz of the evaporator, the second coil temperature Tl of the condenser, and the heating correction coefficient α h and temperature fitting coefficients α1 to α 10 The heating capacity calculation formula of the air conditioner is introduced to determine the heating capacity Qh of the air conditioner to determine the real-time capacity of the air conditioner under different operating modes.

[0118] According to the capacity calculation method of the air conditioner according to the embodiment of the present invention, since the air conditioner has a device for detecting the evaporating temperature and the condensing temperature, after the air conditioner is started up, the first coil temperature of the evaporator and the second coil temperature of the condenser are obtained by using the existing device, and the real-time capacity of the air conditioner in different operating modes is calculated in combination with the operating mode of the air conditioner, the cooling capacity correction factor and the heating capacity correction factor mass flow rate. The evaporating temperature and condensing temperature of the air conditioner are detected by using the existing device, and there is no need to detect the inlet and outlet air enthalpy values ​​on the outdoor side of the air conditioner, thereby avoiding the problem that the air enthalpy value is greatly affected by the outdoor environment, and there is no need to add additional detection devices on the indoor side of the air conditioner. Therefore, while reducing the hardware space occupied and the hardware cost of the air conditioner, the accuracy of the air conditioner capacity calculation is improved.

[0119] In some embodiments, when the air conditioner is in a cooling operation mode, the cooling capacity of the air conditioner is determined according to the first coil temperature, the second coil temperature, the cooling capacity correction coefficient, the temperature fitting coefficient and the cooling capacity calculation formula of the air conditioner, including: determining the initial cooling capacity of the air conditioner according to the first coil temperature, the second coil temperature and the temperature fitting coefficient; substituting the initial cooling capacity and the cooling capacity correction coefficient into the cooling capacity calculation formula to determine the cooling capacity of the air conditioner.

[0120] In the embodiment, when the operation mode of the air conditioner is in the cooling operation mode, the temperature of the first coil Tz of the evaporator, the second coil Tl of the condenser and the temperature fitting coefficients α1 to α 10 Determine the initial cooling capacity of the air conditioner, that is, α1+α2*Tz+α3*Tl+α4*Tz 2 +α5*Tz*Tl+α6*Tl 2 +α7*Tz 3 +α8*Tz 2 *Tl+α9*

[0121] Tz*T 2 +α 10 *Tl 3 After determining the initial cooling capacity of the air conditioner, the initial cooling capacity of the air conditioner and the cooling capacity correction factor α c Substitute the cooling capacity calculation formula into the air conditioner to determine the cooling capacity Qc of the air conditioner, thereby determining the real-time capacity of the air conditioner when it is in cooling mode.

[0122] In some embodiments, the cooling capacity calculation formula includes:

[0123] Q 制冷量 =α c (α1+α2*Tz+α3*Tl+α4*Tz 2 +α5*Tz*Tl+α6*Tl 2 +α7*Tz 3 +α8

[0124] *Tz 2 *Tl+α9*Tz*Tl 2 +α 10 *Tl 3 )

[0125] Among them, Qc is the cooling capacity, α c is the cooling capacity correction factor, α1 to α 10 is the temperature fitting coefficient, Tz is the first coil temperature, and Tl is the second coil temperature.

[0126] In the embodiment, the initial cooling capacity of the air conditioner is obtained, that is, α1+α2*Tz+α3*Tl+α4*Tz 2 +α5*Tz*Tl+α6*Tl 2 +α7*Tz 3 +α8*Tz 2 *Tl+α9*Tz*Tl 2 +α 10 *Tl 3 and cooling capacity correction factor α c Finally, the above parameters are substituted into the cooling capacity calculation formula to determine the cooling capacity Qc of the air conditioner. The cooling capacity calculation formula is as follows:

[0127] Q 制冷量 =α c (α1+α2*Tz+α3*Tl+α4*Tz 2 +α5*Tz*Tl+α6*Tl 2 +α7*Tz 3 +α8

[0128] *Tz 2 *Tl+α9*Tz*Tl 2 +α 10 *Tl 3 )

[0129] By calculating the cooling capacity Qc of the air conditioner, the real-time capacity of the air conditioner when in cooling mode is determined.

[0130] In some embodiments, when the air conditioner is in the heating operation mode, the heating capacity of the air conditioner is determined according to the first coil temperature, the second coil temperature, the heating capacity correction coefficient, the temperature fitting coefficient and the heating capacity calculation formula of the air conditioner, including: determining the initial heating capacity of the air conditioner according to the first coil temperature, the second coil temperature and the temperature fitting coefficient; substituting the initial heating capacity and the heating capacity correction coefficient into the heating capacity calculation formula to determine the heating capacity of the air conditioner.

[0131] In the embodiment, when the operation mode of the air conditioner is in the heating operation mode, the temperature of the first coil Tz of the evaporator, the second coil Tl of the condenser and the temperature fitting coefficients α1 to α 10 Determine the initial heating capacity of the air conditioner, i.e. α1+α2*Tz+α3*Tl+α4*Tz 2 +α5*Tz*Tl+α6*Tl 2 +α7*Tz 3 +α8*Tz 2 *Tl+α9*

[0132] Tz*T 2 +α 10 *Tl 3 After determining the initial heating capacity of the air conditioner, the initial heating capacity of the air conditioner and the heating capacity correction coefficient α h Substitute the heating capacity calculation formula into the air conditioner to determine the heating capacity Qh of the air conditioner, thereby determining the real-time capacity of the air conditioner when it is in heating mode.

[0133] In some embodiments, the heating capacity calculation formula includes:

[0134] Q 制热量 =α h (α1+α2*Tz+α3*Tl+α4*Tz 2 +α5*Tz*Tl+α6*Tl 2 +α7*Tz 3 +α8

[0135] *Tz 2 *Tl+α9*Tz*Tl 2 +α 10 *Tl 3 )

[0136] Among them, Qh is the heating capacity, α h is the heating capacity correction coefficient, α1 to α 10 is the temperature fitting coefficient, Tz is the first coil temperature, and Tl is the second coil temperature.

[0137] In the embodiment, the initial heating capacity of the air conditioner is obtained, that is, α1+α2*Tz+α3*Tl+α4*Tz 2 +α5*Tz*Tl+α6*Tl 2 +α7*Tz 3 +α8*Tz 2 *Tl+α9*Tz*Tl 2 +α 10 *Tl 3 and heating capacity correction factor α hThen, the above parameters are substituted into the heating capacity calculation formula to determine the heating capacity of the air conditioner, for example, recorded as Qh. The heating capacity calculation formula is as follows:

[0138] Q 制热量 =α h (α1+α2*Tz+α3*Tl+α4*Tz 2 +α5*Tz*Tl+α6*Tl 2 +α7*Tz 3 +α8

[0139] *Tz 2 *Tl+α9*Tz*Tl 2 +α 10 *Tl 3 )

[0140] By calculating the heating capacity Qh of the air conditioner, the real-time capacity of the air conditioner when in heating mode is determined.

[0141] By calculating the cooling capacity Qc and heating capacity Qh of the air conditioner, the real-time capacity of the air conditioner in different operating modes can be determined.

[0142] In some embodiments, after the cooling capacity or heating capacity of the air conditioner is determined, the cooling capacity or heating capacity is sent to the user terminal and / or displayed on the display screen of the air conditioner.

[0143] In an embodiment, after obtaining the cooling capacity Qc or heating capacity Qh of the air conditioner, the controller sends the cooling capacity Qc or heating capacity Qh to a user terminal such as a mobile phone APP, and / or sends it to the display screen of the air conditioner for display, so that the user can understand the real-time status of the air conditioner.

[0144] According to the capacity calculation method of the air conditioner according to the embodiment of the present invention, since the air conditioner has a device for detecting the evaporating temperature and the condensing temperature, after the air conditioner is started up, the first coil temperature of the evaporator and the second coil temperature of the condenser are obtained by using the existing device, and the real-time capacity of the air conditioner in different operating modes is calculated in combination with the operating mode of the air conditioner, the cooling capacity correction factor and the heating capacity correction factor mass flow rate. The evaporating temperature and condensing temperature of the air conditioner are detected by using the existing device, and there is no need to detect the inlet and outlet air enthalpy values ​​on the outdoor side of the air conditioner, thereby avoiding the problem that the air enthalpy value is greatly affected by the outdoor environment, and there is no need to add additional detection devices on the indoor side of the air conditioner. Therefore, while reducing the hardware space occupied and the hardware cost of the air conditioner, the accuracy of the air conditioner capacity calculation is improved.

[0145] 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.

[0146] 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: A refrigerant circulation loop, wherein the refrigerant circulates in a circulation loop through the compressor, condenser and evaporator; 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; A first coil temperature sensor, used for detecting the first coil temperature of the evaporator; A second coil temperature sensor, used for detecting the temperature of the second coil of the condenser; The controller is configured to: obtain the operation mode of the air conditioner, the first coil temperature, the second coil temperature, the cooling capacity correction coefficient, the heating capacity correction coefficient and the temperature fitting coefficient; When the air conditioner is in a cooling operation mode, the cooling capacity of the air conditioner is determined according to the first coil temperature, the second coil temperature, the cooling capacity correction coefficient, the temperature fitting coefficient and a cooling capacity calculation formula of the air conditioner; When the air conditioner is in a heating operation mode, the heating amount of the air conditioner is determined according to the first coil temperature, the second coil temperature, the heating amount correction coefficient, the temperature fitting coefficient and a heating capacity calculation formula of the air conditioner.

2. The air conditioner according to claim 1, characterized in that: When the air conditioner is in a cooling operation mode, when determining the cooling capacity of the air conditioner according to the first coil temperature, the second coil temperature, the cooling capacity correction coefficient, the temperature fitting coefficient and the cooling capacity calculation formula of the air conditioner, the controller is configured as follows: Determine the initial cooling capacity of the air conditioner according to the first coil temperature, the second coil temperature and the temperature fitting coefficient; The initial cooling capacity and the cooling capacity correction coefficient are substituted into the cooling capacity calculation formula to determine the cooling capacity of the air conditioner.

3. The air conditioner according to claim 2, characterized in that: The refrigeration capacity calculation formula includes: Qc 制冷量 =a c (α1+α2*Tz+α3*Tl+α4*Tz) 2 +α5*Tz*Tl+α6*Tl 2 +α7*Tz 3 +α8*Tz 2 *Tl+α9*Tz*Tl 2 +a 10 *Tl 3 ) Wherein, Qc is the cooling capacity, α c is the cooling capacity correction factor, the α1 to α 10 is the temperature fitting coefficient, Tz is the first coil temperature, and Tl is the second coil temperature.

4. The air conditioner according to claim 1, characterized in that: When the air conditioner is in a heating operation mode, when determining the heating amount of the air conditioner according to the first coil temperature, the second coil temperature, the heating amount correction coefficient, the temperature fitting coefficient and a heating capacity calculation formula of the air conditioner, the controller is configured as follows: Determine the initial heating capacity of the air conditioner according to the first coil temperature, the second coil temperature and the temperature fitting coefficient; The initial heating amount and the heating amount correction coefficient are substituted into the heating capacity calculation formula to determine the heating amount of the air conditioner.

5. The air conditioner according to claim 4, characterized in that: The heating capacity calculation formula includes: Qh 制热量 =a h (α1+α2*Tz+α3*Tl+α4*Tz) 2 +α5*Tz*Tl+α6*Tl 2 +α7*Tz 3 +α8*Tz 2 *Tl+α9*Tz*Tl 2 +a 10 *Tl 3 ) Wherein, Qh is the heating capacity, and α h is the heating capacity correction coefficient, and the 10 is the temperature fitting coefficient, Tz is the first coil temperature, and Tl is the second coil temperature.

6. The air conditioner according to claim 1, characterized in that: The controller is also configured to: The cooling capacity or heating capacity is sent to a user terminal and / or displayed on a display screen of the air conditioner.

7. A method for calculating the capacity of an air conditioner, characterized in that: include: Obtaining the operation mode, the first coil temperature, the second coil temperature, the cooling capacity correction coefficient, the heating capacity correction coefficient and the temperature fitting coefficient of the air conditioner; When the air conditioner is in a cooling operation mode, the cooling capacity of the air conditioner is determined according to the first coil temperature, the second coil temperature, the cooling capacity correction coefficient, the temperature fitting coefficient and a cooling capacity calculation formula of the air conditioner; When the air conditioner is in a heating operation mode, the heating amount of the air conditioner is determined according to the first coil temperature, the second coil temperature, the heating amount correction coefficient, the temperature fitting coefficient and a heating capacity calculation formula of the air conditioner.

8. The method for calculating the capacity of an air conditioner according to claim 7, characterized in that: When the air conditioner is in a cooling operation mode, determining the cooling capacity of the air conditioner according to the first coil temperature, the second coil temperature, the cooling capacity correction coefficient, the temperature fitting coefficient and a cooling capacity calculation formula of the air conditioner includes: Determine the initial cooling capacity of the air conditioner according to the first coil temperature, the second coil temperature and the temperature fitting coefficient; The initial cooling capacity and the cooling capacity correction coefficient are substituted into the cooling capacity calculation formula to determine the cooling capacity of the air conditioner.

9. The method for calculating the capacity of an air conditioner according to claim 8, characterized in that: The refrigeration capacity calculation formula includes: Qc 制冷量 =a c (α1+α2*Tz+α3*Tl+α4*Tz) 2 +α5*Tz*Tl+α6*Tl 2 +α7*Tz 3 +α8*Tz 2 *Tl+α9*Tz*Tl 2 +a 10 *Tl 3 ) Wherein, Qc is the cooling capacity, and α1 to α 10 is the temperature fitting coefficient, Tz is the first coil temperature, and Tl is the second coil temperature.

10. The method for calculating the capacity of an air conditioner according to claim 7, characterized in that: When the air conditioner is in a heating operation mode, the heating amount of the air conditioner is determined according to the first coil temperature, the second coil temperature, the heating amount correction coefficient, the temperature fitting coefficient and a heating capacity calculation formula of the air conditioner, including: Determine the initial heating capacity of the air conditioner according to the first coil temperature, the second coil temperature and the temperature fitting coefficient; The initial heating amount and the heating amount correction coefficient are substituted into the heating capacity calculation formula to determine the heating amount of the air conditioner.

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