Air conditioner and method for calculating its capacity

Abstract

The application provides an air conditioner and a capacity calculation method thereof. The air conditioner comprises a controller configured to: acquire an operation mode, a first coil temperature, a second coil 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, determine a refrigerating capacity of the air conditioner according to the first coil temperature, the second coil temperature, the refrigerating capacity correction coefficient, the temperature fitting coefficient and a refrigerating capacity calculation formula of the air conditioner; and when the air conditioner is in a heating operation mode, determine a 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 a heating capacity calculation formula of the air conditioner. The application avoids the problem that the air enthalpy value is greatly affected by the outdoor environment, and does not need to increase an additional detection device on the indoor side, thereby reducing the hardware occupation space and hardware cost of the air conditioner, and improving the accuracy of the capacity calculation of the air conditioner.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of air conditioners, and particularly to an air conditioner and a capacity calculation method thereof. BACKGROUND

[0002] Since an air conditioner must have a capacity calculation function, and air conditioners without the function are not allowed to be sold in some regions and countries, currently, an air conditioner determines the enthalpy in and out of an evaporator by detecting the temperature and pressure at the inlet and outlet of the evaporator, so as to calculate the capacity of the air conditioner based on the enthalpy difference method; or detects the air enthalpy at the inlet and outlet of the air conditioner, and calculates the capacity of the air conditioner by the enthalpy difference method.

[0003] However, the above method needs to additionally increase devices in the air conditioner, occupies the internal space of the air conditioner, and the structure of the devices is complex, which leads to a higher cost of the air conditioner, especially the air enthalpy at the inlet and outlet is greatly affected by the ambient temperature, and the installation position and detection accuracy of the detection device are required to be higher, which further increases the cost of the air conditioner. SUMMARY

[0004] The present application aims at at least solving one of the problems in the prior art.

[0005] To this end, one object of the present application is to provide an air conditioner which detects the evaporation temperature and condensation temperature by using the existing devices, without detecting the air enthalpy at the inlet and outlet of the outdoor side, avoiding the problem that the air enthalpy is greatly affected by the outdoor environment, and without increasing additional detection devices at the indoor side, so as to reduce the hardware occupation space and hardware cost of the air conditioner, and improve the accuracy of the capacity calculation of the air conditioner.

[0006] To this end, one object of the present application is to provide an air conditioner which detects the evaporation temperature and condensation temperature by using the existing devices, without detecting the air enthalpy at the inlet and outlet of the outdoor side, avoiding the problem that the air enthalpy is greatly affected by the outdoor environment, and without increasing additional detection devices at the indoor side, so as to reduce the hardware occupation space and hardware cost of the air conditioner, and improve the accuracy of the capacity calculation of the air conditioner.

[0007] To achieve the above object, the embodiment of the first aspect of the present application proposes an air conditioner, comprising: a refrigerant circulation loop, which circulates refrigerant in the circulation loop through a compressor, a condenser and an evaporator; the compressor is configured 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 is configured to detect a first coil temperature of the evaporator; a second coil temperature sensor is configured to detect a second coil temperature of the condenser; a controller is configured to: obtain an operating mode of the air conditioner, the first coil temperature, the second coil temperature, a refrigeration capacity correction coefficient, a heating capacity correction coefficient and a temperature fitting coefficient; when the air conditioner is in a refrigeration operating mode, determine the refrigeration capacity of the air conditioner according to the first coil temperature, the second coil temperature, the refrigeration capacity correction coefficient, the temperature fitting coefficient and a refrigeration capacity calculation formula of the air conditioner; when the air conditioner is in a heating operating mode, determine 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 a heating capacity calculation formula of the air conditioner.

[0008] The air conditioner according to the embodiment of the present application has a device for detecting the evaporation temperature and the condensation temperature, and the first coil temperature of the evaporator and the second coil temperature of the condenser are obtained by using the existing device. The real-time capacity of the air conditioner in different operating modes is calculated by combining the operating mode of the air conditioner, the refrigeration capacity correction coefficient and the heating capacity correction coefficient mass flow. The evaporation temperature and the condensation temperature are detected by using the existing device, without detecting the outdoor inlet and outlet air enthalpy, avoiding the problem that the air enthalpy is greatly affected by the outdoor environment, and without adding additional detection devices on the indoor side. Therefore, the hardware space and the hardware cost of the air conditioner are reduced, and the accuracy of the air conditioner capacity calculation is improved.

[0009] In some embodiments, when the air conditioner is in a refrigeration operating mode, the controller is configured to: determine the initial refrigeration capacity of the air conditioner according to the first coil temperature, the second coil temperature and the temperature fitting coefficient; and determine the refrigeration capacity of the air conditioner by bringing the initial refrigeration capacity and the refrigeration capacity correction coefficient into the refrigeration capacity calculation formula.

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

[0011] Qc 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 the Qc is the refrigeration capacity, the a c is a refrigeration capacity correction coefficient, the a1 to a 10 are the temperature fitting coefficients, the Tz is the first coil temperature, and the Tl is the second coil temperature.

[0014] In some embodiments, when the air conditioner is in a heating operation mode, the controller is configured to determine 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 coefficients, and a heating capacity calculation formula, by determining an initial heating capacity of the air conditioner according to the first coil temperature, the second coil temperature, and the temperature fitting coefficients, and by determining the heating capacity of the air conditioner by inputting the initial heating capacity and the heating capacity correction coefficient into the heating capacity calculation formula.

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

[0016] Qh 制热量 = a 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 the Qh is the heating capacity, the a h is a heating capacity correction coefficient, the a1 to a 10 are the temperature fitting coefficients, the Tz is the first coil temperature, and the Tl is the second coil temperature.

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

[0020] ​​To achieve the above object, the embodiment of the second aspect of the present application proposes a capacity calculation method of an air conditioner, which comprises: obtaining an operation mode of the air conditioner, a first coil temperature, a second coil temperature, a refrigerating capacity correction coefficient, a heating capacity correction coefficient and a temperature fitting coefficient; when the air conditioner is in a refrigerating operation mode, determining a refrigerating capacity of the air conditioner according to the first coil temperature, the second coil temperature, the refrigerating capacity correction coefficient, the temperature fitting coefficient and a refrigerating capacity calculation formula of the air conditioner; and when the air conditioner is in a heating operation mode, determining a 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 a heating capacity calculation formula of the air conditioner.

[0021] The capacity calculation method of the air conditioner according to the embodiment of the present application, since the air conditioner has a device for detecting the evaporation temperature and the condensation 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 under different operation modes is calculated by combining the operation mode of the air conditioner, the refrigerating capacity correction coefficient and the heating capacity correction coefficient mass flow, the evaporation temperature and the condensation temperature are detected by using the existing device, without detecting the outdoor side inlet and outlet air enthalpy, avoiding the problem that the air enthalpy is greatly affected by the outdoor environment, and without increasing additional detection devices on the indoor side, thereby reducing the hardware occupation space and hardware cost of the air conditioner, and improving the accuracy of the capacity calculation of the air conditioner.

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

[0023] In some embodiments, the refrigerating capacity calculation formula comprises:

[0024] Qc 制冷量 = a c (a1+a2*Tz+a3*Tl+a4*Tz 2 +a5*Tz*Tl+a6*Tl 2 +a7*Tz 3 +a8

[0025] *Tz 2 *Tl+a9*Tz*Tl 2 +a 10 *Tl 3 )

[0026] wherein the Qc is the refrigeration capacity, the a1 to a 10 is the temperature fitting coefficient, the Tz is the first coil temperature, and the Tl is the second coil temperature.

[0027] In some embodiments, when the air conditioner is in a 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 a heating capacity calculation formula of the air conditioner, including: determining an initial heating capacity of the air conditioner according to the first coil temperature, the second coil temperature, and the temperature fitting coefficient; and determining the heating capacity of the air conditioner by bringing the initial heating capacity and the heating capacity correction coefficient into the heating capacity calculation formula.

[0028] Additional aspects and advantages of the application will be set forth in part in the description which follows, and in part will become apparent to those skilled in the art upon examination of the following and / or can be learned by practice of the application. BRIEF DESCRIPTION OF DRAWINGS

[0029] The above and / or additional aspects and advantages of the present application will become apparent and be readily appreciated from the following description, including the accompanying drawings, in which:

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

[0031] Figure 2 is a flowchart of a refrigeration capacity calculation method of an air conditioner according to an embodiment of the present application;

[0032] Figure 3 is a flowchart of a heating capacity calculation method of an air conditioner according to an embodiment of the present application;

[0033] Figure 4 is a flowchart of a refrigeration capacity calculation method of an air conditioner according to an embodiment of the present application;

[0034] Figure 5 is a flowchart of a heating capacity calculation method of an air conditioner according to an embodiment of the present application;

[0035] Figure 6 is a flowchart of a capacity calculation method of an air conditioner according to an embodiment of the present application;

[0036] Figure 7 is a flowchart of a capacity calculation method of an air conditioner according to an embodiment of the present application.

[0037] Reference signs: 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 application are described in detail below with reference to the attached drawings, which are exemplary embodiments of the present application. Embodiments of the present application are described in detail below.

[0040] The air conditioner in the present application 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 air that has been adjusted and heat-exchanged.

[0041] The compressor compresses 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 heat is released to the surrounding environment through the condensation process.

[0042] The expansion valve expands the liquid-phase refrigerant in a high-temperature and high-pressure state condensed in the condenser into a low-temperature and low-pressure liquid-phase refrigerant. The evaporator evaporates the refrigerant expanded in the expansion valve and returns the refrigerant gas in a low-temperature and low-pressure state to the compressor. The evaporator can achieve a refrigeration effect by heat-exchanging with a material to be cooled using latent heat of evaporation of the refrigerant. Throughout the cycle, the air conditioner can adjust the temperature of an indoor space.

[0043] The outdoor unit of the air conditioner refers to a portion of the refrigeration cycle including the compressor and the outdoor heat exchanger, the indoor unit of the air conditioner includes the indoor heat exchanger, and the expansion valve can 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] The following will be described with reference to Figures 1-6 An air conditioner 1 according to an embodiment of the present application is described below.

[0046] As Figure 1 shown, the air conditioner 1 according to an embodiment of the present application includes 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 circulates the refrigerant within the compressor 12, condenser, and evaporator. The compressor 12 compresses the low-temperature, low-pressure refrigerant gas into a high-temperature, high-pressure refrigerant gas and discharges it to the condenser. The first coil temperature sensor 13 detects the temperature of the first coil of the evaporator. The second coil temperature sensor 14 detects the temperature of the second coil of the condenser. The controller 15 is configured to acquire the operating 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 cooling mode, 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. When the air conditioner 1 is in heating mode, the heating capacity of the air conditioner 1 is determined based on 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 this embodiment, after the air conditioner 1 is turned on, the controller 15 acquires the operating mode of the air conditioner 1 in real time. The operating mode includes, for example, a cooling operating mode and a heating operating mode. Since the coil temperatures of the evaporator and condenser change when the compressor 12 compresses the low-temperature, low-pressure refrigerant gas into a high-temperature, high-pressure refrigerant gas and discharges it to the condenser, the controller 15 acquires the first coil temperature of the evaporator in real time based on the first coil temperature sensor 13, for example, denoted as Tz, to determine the evaporation temperature of the air conditioner 1. The controller 15 acquires the second coil temperature of the condenser in real time based on the second coil temperature sensor 14, for example, denoted as Tl, to determine the condensation temperature of the air conditioner 1. A cooling capacity correction coefficient preset in the controller 15 is also acquired, for example, denoted as α. c The heating capacity correction factor is denoted as α. h and temperature fitting coefficients, for example, denoted as α1 to α 10 Among them, the cooling capacity correction factor α c Heating capacity correction factor α h and temperature fitting coefficients α1 to α 10 The correction coefficients and preset values ​​are preset in the controller 15 based on the experimental data.

[0049] After obtaining the above parameters, the capacity calculation formula for air conditioner 1 is used, combined with the above parameters, to determine the capacity of air conditioner 1 under different operating modes. For example, when air conditioner 1 is in 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 used. c and temperature fitting coefficient α1 to α 10The refrigerating capacity calculation formula of the air conditioner 1 is brought in to determine the refrigerating capacity of the air conditioner 1, for example, denoted 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, the heating capacity correction coefficient α h and the temperature fitting coefficient α1 to α 10 The heating capacity calculation formula of the air conditioner 1 is brought in to determine the heating capacity of the air conditioner 1, for example, denoted as Qh, so as to determine the real-time capacity of the air conditioner 1 in different operation modes.

[0050] The refrigerating capacity calculation method of the air conditioner of the embodiment of the present application is described below. Figure 2 The refrigerating capacity calculation method of the air conditioner of the embodiment of the present application is described below.

[0051] In step S11, the air conditioner is started to operate.

[0052] In step S12, the operation mode, the first coil temperature, the second coil temperature, the refrigerating capacity correction coefficient, the heating capacity correction coefficient and the temperature fitting coefficient of the air conditioner are acquired.

[0053] In step S13, it is judged whether the air conditioner is in the refrigerating operation mode, if yes, step S15 is executed; otherwise, step S12 is executed.

[0054] In step S15, the refrigerating capacity of the air conditioner is determined according to the first coil temperature, the second coil temperature, the refrigerating capacity correction coefficient, the temperature fitting coefficient and the refrigerating capacity calculation formula of the air conditioner.

[0055] The heating capacity calculation method of the air conditioner of the embodiment of the present application is described below. Figure 3 The heating capacity calculation method of the air conditioner of the embodiment of the present application is described below.

[0056] In step S11, the air conditioner is started to operate.

[0057] In step S12, the operation mode, the first coil temperature, the second coil temperature, the refrigerating capacity correction coefficient, the heating capacity correction coefficient and the temperature fitting coefficient of the air conditioner are acquired.

[0058] In step S13, it is judged whether the air conditioner is in the refrigerating operation mode, if yes, step S12 is executed; otherwise, step S16 is executed.

[0059] In step S16, 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.

[0060] The air conditioner 1 according to the embodiment of the present application has a device for detecting the evaporating temperature and the condensing temperature, and after starting operation, 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 in different operation modes is calculated in combination with the operation mode of the air conditioner 1, the refrigeration capacity correction coefficient and the heating capacity correction coefficient and the mass flow rate. The evaporating temperature and the condensing temperature of the air conditioner 1 are detected by using the existing device, without detecting the inlet and outlet air enthalpy on the outdoor side of the air conditioner 1, avoiding the problem that the air enthalpy is greatly affected by the outdoor environment, and without adding an additional detection device on the indoor side of the air conditioner 1, thereby reducing the hardware occupation space and the hardware cost of the air conditioner 1, and improving the accuracy of the capacity calculation of the air conditioner 1.

[0061] In some embodiments, when the air conditioner 1 is in the refrigeration operation mode, the controller 15 is configured to determine the initial refrigeration capacity of the air conditioner 1 according to the first coil temperature, the second coil temperature and the temperature fitting coefficient when determining the refrigeration capacity of the air conditioner 1 according to the first coil temperature, the second coil temperature, the refrigeration capacity correction coefficient, the temperature fitting coefficient and the refrigeration capacity calculation formula of the air conditioner 1.

[0062] In the embodiment, as shown in Figure 4 , it is a flow chart of the refrigeration capacity calculation method of the air conditioner according to an embodiment of the present application. When the operation mode of the air conditioner 1 is in the refrigeration operation mode, the initial refrigeration capacity of the air conditioner 1 is determined 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 . 2 +α5*Tz*Tl+α6*Tl 2 +α7*Tz 3 +α8*Tz 2 *Tl+α9*

[0063] Tz*Tl 2 +α 10 *Tl 3 , the initial refrigeration capacity of the air conditioner 1 is determined, and the initial refrigeration capacity of the air conditioner 1 and the refrigeration capacity correction coefficient α c are brought into the refrigeration capacity calculation formula to determine the refrigeration capacity Qc of the air conditioner 1, thereby determining the real-time capacity of the air conditioner 1 in the refrigeration mode.

[0064] The refrigeration capacity calculation method of the air conditioner according to the embodiment of the present application is described below with reference to Figure 4 .

[0065] Step S11, the air conditioner starts operation.

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

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

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

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

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

[0071] Qc 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] Wherein, Qc is the refrigerating capacity, α c is the refrigerating capacity correction coefficient, α1 to α 10 are the temperature fitting coefficients, Tz is the first coil temperature, and Tl is the second coil temperature.

[0074] In embodiments, the initial refrigerating capacity of the air conditioner 1 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 the refrigerating capacity correction coefficient α c , and the above parameters are brought into the refrigerating capacity calculation formula to determine the refrigerating capacity Qc of the air conditioner 1, and the refrigerating capacity calculation formula is as follows:

[0075] Qc 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] The real-time capacity of air conditioner 1 when it is in cooling mode is determined by calculating the cooling capacity Qc of air conditioner 1.

[0078] In some embodiments, when the air conditioner 1 is in heating mode, and the heating capacity of the air conditioner 1 is determined based on 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 based on the first coil temperature, the second coil temperature, and the temperature fitting coefficient; and 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, such as Figure 5 The diagram shows a flowchart of a method for calculating the cooling capacity of an air conditioner according to an embodiment of the present invention. When the air conditioner 1 is in heating mode, the cooling capacity is calculated based on 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, i.e., α1 + α2*Tz + α3*Tl + α4*Tz 2 +α5*Tz*Tl+α6*Tl 2 +α7*Tz 3 +α8*Tz 2 *Tl+α9*

[0080] Tz*Tl 2 +α 10 *Tl 3 After determining the initial heating capacity of air conditioner 1, the initial heating capacity of air conditioner 1 and the heating capacity correction coefficient α are... h By substituting the heating capacity calculation formula, the heating capacity Qh of air conditioner 1 is determined, thereby determining the real-time capacity of air conditioner 1 when it is in heating mode.

[0081] The following is for reference. Figure 5 This invention describes a method for calculating the heating capacity of an air conditioner according to an embodiment of the present invention.

[0082] Step S11: Turn on the air conditioner.

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

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

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

[0086] Step S17, bringing 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.

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

[0088] Qh 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] Wherein, Qh is the heating capacity, α h is the heating capacity correction coefficient, α1 to α 10 are the temperature fitting coefficients, Tz is the first coil temperature, and Tl is the second coil temperature.

[0091] In embodiments, the initial heating capacity of the air conditioner 1 is obtained, i.e. 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 the heating capacity correction coefficient α h , and then the above parameters are brought into the heating capacity calculation formula to determine the heating capacity Qh of the air conditioner 1, and the heating capacity calculation formula is as follows:

[0092] Qh 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] The real-time capacity of air conditioner 1 when it is in heating mode is determined by calculating the heating capacity Qh of air conditioner 1.

[0095] By calculating the cooling capacity Qc and heating capacity Qh of air conditioner 1, the real-time capabilities of air conditioner 1 under different operating modes can be determined.

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

[0097] In this 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 the user terminal, such as a mobile APP, and / or 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] The following is for reference. Figure 6 An example is given to illustrate the capacity calculation method of the air conditioner according to an embodiment of the present invention.

[0099] like Figure 6 As shown, the air conditioner capacity calculation method of this embodiment includes at least steps S11-S18.

[0100] Step S11: Turn on the air conditioner.

[0101] Step S12: Obtain the air conditioner's operating mode, first coil temperature, second coil temperature, cooling capacity correction coefficient, heating capacity correction coefficient, and temperature fitting coefficient.

[0102] Step S13: Determine whether the air conditioner is in cooling mode. If yes, proceed to step S14; otherwise, proceed to step S16.

[0103] Step S14: Determine the initial cooling capacity of the air conditioner based on the temperature of the first coil, the temperature of the second coil, and the temperature fitting coefficient.

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

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

[0106] Step S17, bringing 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.

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

[0108] The air conditioner 1 according to the embodiment of the present application, since the air conditioner 1 has the device for detecting the evaporation temperature and the condensation temperature, after starting operation, 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 operation modes is calculated by combining the operation mode of the air conditioner 1, the refrigerating capacity correction coefficient and the heating capacity correction coefficient and the mass flow rate, the evaporation temperature and the condensation temperature of the air conditioner 1 are detected by using the existing device, without detecting the inlet and outlet air enthalpy of the outdoor side of the air conditioner 1, avoiding the problem that the air enthalpy is greatly affected by the outdoor environment, and without adding additional detection device on the indoor side of the air conditioner 1, thereby reducing the hardware occupation space and the hardware cost of the air conditioner 1, and improving the accuracy of the capacity calculation of the air conditioner 1.

[0109] The capacity calculation method of the air conditioner according to the embodiment of the present application will be described below. Figure 7 The capacity calculation method of the air conditioner according to the embodiment of the present application will be described below.

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

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

[0112] The refrigerating capacity correction coefficient α c , the heating capacity correction coefficient α h and the temperature fitting coefficient α1 to α 10 are the correction coefficients and preset values in the controller according to the experimental data.

[0113] In embodiments, after the air conditioner is started, the controller obtains the running mode of the air conditioner in real time, which includes, for example, a cooling running mode and a heating running mode. Since the temperature of the evaporator and the condenser will change when the compressor compresses the low-temperature and low-pressure refrigerant gas into 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, for example, Tz, according to the first coil temperature sensor, and obtains the second coil temperature of the condenser in real time, for example, Tl, according to the second coil temperature sensor, to determine the evaporation temperature and the condensation temperature of the air conditioner 1. The cooling capacity correction coefficient, for example, α c , the heating capacity correction coefficient, for example, α h , and the temperature fitting coefficient, for example, α1 to α 10 .

[0114] Step S2, when the air conditioner is in the cooling running 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 embodiments, after the above parameters are obtained, the capacity calculation formula of the air conditioner is used to determine the capacity of the air conditioner in different running modes in combination with the above parameters. For example, when the running mode of the air conditioner is in the cooling running mode, the first coil temperature Tz of the evaporator, the second coil temperature Tl of the condenser, the cooling capacity correction coefficient α c , and the temperature fitting coefficient α1 to α 10 are brought into the cooling capacity calculation formula of the air conditioner to determine the cooling capacity of the air conditioner, for example, Qc.

[0116] Step S3, when the air conditioner is in the heating running 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 embodiments, when the running mode of the air conditioner is in the heating running mode, the first coil temperature Tz of the evaporator, the second coil temperature Tl of the condenser, the heating capacity correction coefficient α h , and the temperature fitting coefficient α1 to α 10 are brought into the heating capacity calculation formula of the air conditioner to determine the heating capacity Qh of the air conditioner, so as to determine the real-time capacity of the air conditioner in different running modes.

[0118] The capacity calculation method of the air conditioner according to the embodiment of the application, since the air conditioner has the device for detecting the evaporating temperature and the condensing temperature, after starting operation, 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 under different operation modes is calculated in combination with the operation mode of the air conditioner, the refrigerating capacity correction coefficient and the heating capacity correction coefficient and the mass flow, the evaporating temperature and the condensing temperature of the air conditioner are detected by using the existing device, without detecting the inlet and outlet air enthalpy on the outdoor side of the air conditioner, the problem that the air enthalpy is greatly affected by the outdoor environment is avoided, and no additional detection device needs to be added on the indoor side of the air conditioner, so that the hardware occupation space and the hardware cost of the air conditioner are reduced, and the accuracy of the capacity calculation of the air conditioner is improved.

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

[0120] In the embodiment, when the operation mode of the air conditioner is in the refrigeration operation mode, the initial refrigerating capacity of the air conditioner is determined according to the first coil temperature Tz of the evaporator, the second coil temperature Tl of the condenser and the temperature fitting coefficient α1 to α 10 The initial refrigerating capacity of the air conditioner is determined, 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*Tl 2 +α 10 *Tl 3 After the initial refrigerating capacity of the air conditioner is determined, the initial refrigerating capacity of the air conditioner and the refrigerating capacity correction coefficient α c are brought into the refrigerating capacity calculation formula to determine the refrigerating capacity Qc of the air conditioner, so as to determine the real-time capacity of the air conditioner in the refrigeration mode.

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

[0123] Qc 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] wherein Qc is the refrigeration capacity, a c is the refrigeration capacity correction coefficient, a1 to a 10 are temperature fitting coefficients, Tz is the first coil temperature, and Tl is the second coil temperature.

[0126] In embodiments, the initial refrigeration capacity of the air conditioner, i.e., a1+ a2*Tz+ a3*Tl+ a4*Tz 2 +a5*Tz*Tl+ a6*Tl 2 +a7*Tz 3 +a8*Tz 2 *Tl+ a9*Tz*Tl 2 +a 10 *Tl 3 and the refrigeration capacity correction coefficient a c are obtained, and the above parameters are brought into the refrigeration capacity calculation formula to determine the refrigeration capacity Qc of the air conditioner, and the refrigeration capacity calculation formula is as follows:

[0127] Qc 制冷量 = a c (a1+ a2*Tz+ a3*Tl+ a4*Tz 2 +a5*Tz*Tl+ a6*Tl 2 +a7*Tz 3 +a8

[0128] *Tz 2 *Tl+ a9*Tz*Tl 2 +a 10 *Tl 3 )

[0129] By calculating the refrigeration capacity Qc of the air conditioner, the real-time capacity of the air conditioner in the refrigeration 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; and bringing 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 embodiments, 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 temperature fitting coefficients a1 to a 10 The initial heating capacity of the air conditioner is determined, that is, a1+a2*Tz+a3*Tl+a4*Tz 2 + a5*Tz*Tl+a6*Tl 2 + a7*Tz 3 + a8*Tz 2 *Tl+a9

[0132] Tz*Tl 2 + a 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 a h are brought into the heating capacity calculation formula to determine the heating capacity Qh of the air conditioner, so as to determine the real-time capacity of the air conditioner in the heating mode.

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

[0134] Qh 制热量 = a h (a1+a2*Tz+a3*Tl+a4*Tz 2 + a5*Tz*Tl+a6*Tl 2 + a7*Tz 3 + a8

[0135] *Tz 2 *Tl+a9*Tz*Tl 2 + a 10 *Tl 3 )

[0136] Wherein, Qh is the heating capacity, a h is the heating capacity correction coefficient, a1 to a 10 are temperature fitting coefficients, Tz is the first coil temperature, and Tl is the second coil temperature.

[0137] In embodiments, the initial heating capacity of the air conditioner is obtained, that is, a1+a2*Tz+a3*Tl+a4*Tz 2 + a5*Tz*Tl+a6*Tl 2 + a7*Tz 3 + a8*Tz 2 *Tl+a9*Tz*Tl 2 + a 10 *Tl 3 and the heating capacity correction coefficient a hAfter that, the above parameters are brought into the heating capacity calculation formula to determine the heating capacity of the air conditioner, for example, denoted as Qh, and the heating capacity calculation formula is as follows:

[0138] Qh 制热量 = a h (a1+a2*Tz+a3*Tl+a4*Tz 2 +a5*Tz*Tl+a6*Tl 2 +a7*Tz 3 +a8

[0139] *Tz 2 *Tl+a9*Tz*Tl 2 +a 10 *Tl 3 )

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

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

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

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

[0144] According to the capacity calculation method of the air conditioner of the embodiment of the present application, since the air conditioner has a device for detecting the evaporation temperature and the condensation temperature, after starting operation, 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 refrigeration capacity correction coefficient and the heating capacity correction coefficient and the mass flow. The evaporation temperature and the condensation temperature of the air conditioner are detected by using the existing device, without detecting the inlet and outlet air enthalpy on the outdoor side of the air conditioner, avoiding the problem that the air enthalpy is greatly affected by the outdoor environment, and without increasing additional detection devices on the indoor side of the air conditioner. Therefore, while reducing the hardware occupation space and the hardware cost of the air conditioner, the accuracy of the capacity calculation of the air conditioner is improved.

[0145] In the description of the specification, reference to "one embodiment", "some embodiments", "an exemplary embodiment", "an example", "a specific example", or "some examples" means that a particular feature, structure, material, or characteristic being described is included in at least one embodiment or example of the application. The appearances of the phrases "in one embodiment", "in some embodiments", "in an exemplary embodiment", "an example", "a specific example", or "some examples" in various places in the specification are not necessarily referring to the same embodiment or example.

[0146] While embodiments of the application have been shown and described, it is to be understood that the application is not limited to these embodiments. Rather, it is the intention that modifications, changes, substitutions, and variations be made to the embodiments disclosed herein without departing from the spirit and scope of the application, which is defined solely by the claims and their equivalents.

Claims

1. An air conditioner characterized by comprising: include: The refrigerant circulation loop allows the refrigerant to circulate within the compressor, condenser, and evaporator. A compressor is used to compress low-temperature, low-pressure refrigerant gas into high-temperature, high-pressure refrigerant gas and discharge it to the condenser. A first coil temperature sensor is used to detect the temperature of the first coil of the evaporator. The second coil temperature sensor is used to detect the temperature of the second coil of the condenser. The controller is configured to: acquire the operating mode of the air conditioner, the temperature of the first coil, the temperature of the second coil, the cooling capacity correction coefficient, and the temperature fitting coefficient; When the air conditioner is in cooling mode, 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 air conditioner's cooling capacity calculation formula, specifically including: The initial cooling capacity of the air conditioner is determined based on the temperature of the first coil, the temperature of the second coil, 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; The formula for calculating the cooling capacity includes: Wherein, the is the refrigeration capacity, the is the refrigeration capacity correction coefficient, the to is the temperature fitting coefficient, the is the first coil temperature, the is the second coil temperature.

2. The air conditioner of claim 1, wherein The controller is also configured to: Obtain the heating capacity correction factor; When the air conditioner is in heating mode, the heating capacity of the air conditioner is determined based on the first coil temperature, the second coil temperature, the heating capacity correction coefficient, the temperature fitting coefficient, and the air conditioner's heating capacity calculation formula, specifically including: The initial heating capacity of the air conditioner is determined based on the temperature of the first coil, the temperature of the second coil, and the temperature fitting coefficient. The initial heating capacity and the heating capacity correction coefficient are substituted into the heating capacity calculation formula to determine the heating capacity of the air conditioner.

3. The air conditioner of claim 2, wherein The formula for calculating heating capacity includes: Wherein, the is the heating capacity, the is the heating capacity correction coefficient, the to is the temperature fitting coefficient, the is the first coil temperature, the is the second coil temperature.

4. The air conditioner of claim 1, wherein The controller is also configured to: The cooling or heating capacity is sent to the user terminal and / or displayed on the air conditioner's screen.

5. A method of calculating a capacity of an air conditioner, characterized by, include: The operating mode, first coil temperature, second coil temperature, cooling capacity correction coefficient, and temperature fitting coefficient of the air conditioner are obtained. When the air conditioner is in cooling mode, 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 air conditioner's cooling capacity calculation formula, specifically including: The initial cooling capacity of the air conditioner is determined based on the temperature of the first coil, the temperature of the second coil, 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; The formula for calculating the cooling capacity includes: Wherein, the is the refrigeration capacity, the to is the temperature fitting coefficient, the is the first coil temperature, the is the second coil temperature.

6. The capacity calculation method of the air conditioner according to claim 5, wherein Also includes: Obtain the heating capacity correction factor; When the air conditioner is in heating mode, the heating capacity of the air conditioner is determined based on the first coil temperature, the second coil temperature, the heating capacity correction coefficient, the temperature fitting coefficient, and the air conditioner's heating capacity calculation formula, specifically including: The initial heating capacity of the air conditioner is determined based on the temperature of the first coil, the temperature of the second coil, and the temperature fitting coefficient. The initial heating capacity, the heating capacity correction coefficient are brought into the heating capacity calculation formula, and the heating capacity of the air conditioner is determined.

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