Pipe temperature correction method and device, air conditioner and storage medium

Abstract

The application discloses a pipe temperature correction method and device, an air conditioner and a storage medium. The pipe temperature correction method comprises the following steps: when the air conditioner is in a refrigeration mode, determining the refrigerant saturation pressure in an outdoor heat exchanger according to the outdoor coil temperature of the outdoor heat exchanger; determining the compressor suction pressure according to the refrigerant saturation pressure and the compressor discharge temperature; determining the first refrigerant saturation temperature corresponding to the compressor suction pressure according to the compressor suction pressure; and correcting the indoor coil sampling temperature of the indoor heat exchanger according to the first refrigerant saturation temperature to determine the first indoor coil temperature. According to the application, the indoor coil sampling temperature is corrected according to the compressor refrigerant import temperature, and the more accurate indoor coil temperature is obtained, so that the inaccurate indoor heat exchanger pipe temperature monitoring caused by the large air volume of the air conditioner can be avoided.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of air conditioning equipment, in particular to a pipe temperature correction method and device, an air conditioner and a storage medium. BACKGROUND

[0002] An air conditioner is an apparatus for providing treated air directly to a room or other enclosed area, and can adjust the temperature, humidity, cleanliness, and air flow speed (freshness) of the room. Most air conditioners on the market are split-type air conditioners, i.e., an air conditioner includes an indoor unit and an outdoor unit.

[0003] Since the temperature sensing bag of the indoor heat exchanger in the existing indoor unit directly contacts the air duct airflow and the pipe clamp, the accuracy of the sampling temperature of the sensing bag is affected when the air conditioner is in a large air volume working state, resulting in inaccurate feedback of the pipe temperature of the indoor heat exchanger by the sensing bag. SUMMARY

[0004] The main purpose of the embodiments of the present application is to provide a pipe temperature correction method and device, an air conditioner and a storage medium, aiming to improve the technical problem of inaccurate indoor heat exchanger pipe temperature monitoring due to large air volume of the air conditioner in the prior art.

[0005] The embodiments of the present application provide a pipe temperature correction method, which comprises:

[0006] When the air conditioner is in a cooling mode, the refrigerant saturation pressure in the outdoor heat exchanger is determined according to the outdoor coil temperature of the outdoor heat exchanger.

[0007] The compressor suction pressure is determined according to the refrigerant saturation pressure and the compressor discharge temperature.

[0008] The first refrigerant saturation temperature corresponding to the compressor suction pressure is determined.

[0009] The indoor coil sampling temperature of the indoor heat exchanger is corrected according to the first refrigerant saturation temperature to determine the first indoor coil temperature.

[0010] In some embodiments of the present application, the compressor suction pressure is determined according to the refrigerant saturation pressure and the compressor discharge temperature, comprising:

[0011] The first refrigerant energy at the compressor outlet is determined according to the refrigerant saturation pressure and the compressor discharge temperature.

[0012] The compressor suction pressure is determined according to the first refrigerant energy, the compressor operating frequency and the compressor power.

[0013] In some embodiments of the present application, the first indoor coil temperature is determined according to the first refrigerant saturation temperature and the indoor coil sampling temperature, comprising:

[0014] determining a first difference between the first refrigerant saturation temperature and the indoor coil sampling temperature;

[0015] when the absolute value of the first difference is less than or equal to a set difference value, determining the first indoor coil temperature according to the first refrigerant saturation temperature and the indoor coil sampling temperature;

[0016] when the absolute value of the first difference is greater than the set difference value, taking the first refrigerant saturation temperature as the first indoor coil temperature.

[0017] In some embodiments of the present application, the first indoor coil temperature is determined according to the first refrigerant saturation temperature and the indoor coil sampling temperature, comprising:

[0018] taking a weighted average of the first refrigerant saturation temperature and the indoor coil sampling temperature as the first indoor coil temperature.

[0019] In some embodiments of the present application, the tube temperature correction method further comprises:

[0020] when the air conditioner is in a heating mode, determining a refrigerant evaporation pressure of the outdoor heat exchanger according to the outdoor coil temperature;

[0021] determining a compressor discharge pressure according to the refrigerant evaporation pressure and a compressor suction temperature;

[0022] determining a second refrigerant saturation temperature corresponding to the compressor discharge pressure;

[0023] correcting the indoor coil sampling temperature according to the second refrigerant saturation temperature to determine a second indoor coil temperature.

[0024] In some embodiments of the present application, the determination of the compressor discharge pressure according to the refrigerant evaporation pressure and the compressor suction temperature comprises:

[0025] determining a second refrigerant energy at the compressor inlet according to the refrigerant evaporation pressure and the compressor suction temperature;

[0026] determining the compressor discharge pressure according to the compressor operating frequency, the compressor power, and the second refrigerant energy.

[0027] In some embodiments of the present application, the determination of the second indoor coil temperature according to the correction of the indoor coil sampling temperature by the second refrigerant saturation temperature comprises:

[0028] determining a second difference value of the second refrigerant saturation temperature and the indoor coil sampling temperature;

[0029] when it is determined that the absolute value of the second difference value is less than or equal to a set difference value, determining the second indoor coil temperature according to the second refrigerant saturation temperature and the indoor coil sampling temperature;

[0030] when it is determined that the absolute value of the second difference value is greater than the set difference value, taking the second refrigerant saturation temperature as the second indoor coil temperature.

[0031] In some embodiments of the present application, a pipe temperature correction device is also provided, comprising:

[0032] an acquisition module, configured to acquire an outdoor coil temperature of an outdoor heat exchanger and a compressor discharge temperature;

[0033] a control module, configured to determine a refrigerant saturation pressure in the outdoor heat exchanger according to the outdoor coil temperature of the outdoor heat exchanger, to determine a compressor suction pressure according to the refrigerant saturation pressure and the compressor discharge temperature, to determine a first refrigerant saturation temperature corresponding to the compressor suction pressure according to the compressor suction pressure, and to correct an indoor coil sampling temperature of an indoor heat exchanger according to the first refrigerant saturation temperature to determine a first indoor coil temperature.

[0034] In some embodiments of the present application, an air conditioner is also provided, comprising a memory and a processor, the memory storing a computer program, and the processor being configured to run the computer program in the memory to execute the steps in the above-mentioned pipe temperature correction method.

[0035] In some embodiments of the present application, a storage medium is also provided, the storage medium storing a computer program, and the computer program being loaded by a processor to execute the steps in the above-mentioned pipe temperature correction method.

[0036] Embodiments of the present application provide a pipe temperature correction method, device, air conditioner and storage medium. The pipe temperature correction method determines a refrigerant saturation pressure in an outdoor heat exchanger according to an outdoor coil temperature when an air conditioner is in a cooling mode, determines a compressor suction pressure according to the refrigerant saturation pressure and a compressor discharge temperature, determines a first refrigerant saturation temperature corresponding to the compressor suction pressure, i.e. a compressor inlet refrigerant temperature, and then corrects an indoor coil sampling temperature according to the compressor refrigerant inlet temperature to obtain a more accurate indoor coil temperature, thereby avoiding the situation that the indoor heat exchanger pipe temperature is not accurately monitored due to a large air volume of the air conditioner. BRIEF DESCRIPTION OF DRAWINGS

[0037] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description only represent some of the embodiments of the present application, and for those skilled in the art, other drawings can be obtained from the structures shown in these drawings without any creative effort.

[0038] Figure 1 The flowchart of the pipe temperature correction method in the refrigeration of an embodiment of the present application;

[0039] Figure 2 The flowchart of the pipe temperature correction method in the heating of an embodiment of the present application;

[0040] Figure 3 The structural diagram of the pipe temperature correction device of an embodiment of the present application;

[0041] Figure 4 The structural diagram of the air conditioner of an embodiment of the present application.

[0042] The drawings show that: 10, pipe temperature correction device; 100, acquisition module; 200, judgment module; 300, control module; 601, processor; 602, memory; 603, power supply; 604, input unit. DETAILED DESCRIPTION

[0043] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments only represent some of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without any creative effort belong to the scope of protection of the present application.

[0044] It should be noted that all the directionality indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present application are only used to explain the relative position relationship, movement condition, etc. between the components in a certain specific posture (as shown in the drawings). If the specific posture changes, the directionality indications will also change accordingly.

[0045] In the present application, unless otherwise explicitly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be fixed connection, or detachable connection, or integral; can be mechanical connection, or electrical connection; can be direct connection, or indirect connection through an intermediate medium; can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise explicitly limited. For those skilled in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.

[0046] In addition, if the description of "first", "second" and the like is involved in the embodiments of the present application, the description of "first", "second" and the like is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first", "second" can be explicitly or implicitly included at least one of the features. In addition, the meaning of "and / or" appearing throughout the text includes three parallel schemes, for example, "A and / or B" includes A scheme, or B scheme, or A and B scheme. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of the ordinary skilled in the art, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, nor within the scope of protection required by the present application.

[0047] As shown in Figures 1-4 The present application provides a pipe temperature correction method, which comprises:

[0048] S110, when the air conditioner is in a refrigeration mode, determining the refrigerant saturation pressure in the outdoor heat exchanger according to the outdoor coil temperature of the outdoor heat exchanger.

[0049] Wherein, after determining the outdoor coil temperature, the refrigerant saturation pressure corresponding to the outdoor coil temperature can be determined according to the temperature and pressure relationship of the refrigerant in the outdoor heat exchanger during refrigeration.

[0050] Specifically, a plurality of outdoor coil temperatures and a plurality of refrigerant saturation pressures corresponding thereto are stored in the controller of the air conditioner, and after the outdoor coil temperature is determined, the corresponding refrigerant saturation pressure can be determined.

[0051] S120, determining the compressor suction pressure according to the refrigerant saturation pressure and the compressor discharge temperature.

[0052] Wherein, the compressor discharge temperature is the discharge temperature of the compressor outlet.

[0053] Wherein, in the refrigeration mode, the refrigerant enters the outdoor heat exchanger from the compressor outlet, so the refrigerant saturation pressure of the outdoor heat exchanger can represent the discharge pressure of the outdoor compressor outlet.

[0054] Wherein, in the case that the discharge temperature and the discharge pressure of the compressor outlet are known, the controller of the air conditioner can determine the suction pressure of the compressor according to the pre-set program.

[0055] S130, determining the first refrigerant saturation temperature corresponding to the compressor suction pressure.

[0056] The controller of the air conditioner stores a plurality of suction pressures and corresponding first refrigerant saturation temperatures, so that the first refrigerant saturation temperature corresponding to the suction pressure can be determined according to the suction pressure.

[0057] The first refrigerant saturation temperature substantially corresponds to the suction temperature of the compressor.

[0058] Since the refrigerant flows from the indoor heat exchanger to the compressor in the refrigeration mode, the first refrigerant saturation temperature substantially corresponds to the temperature of the outlet portion of the indoor coil of the indoor heat exchanger.

[0059] S140, correcting the indoor coil sampling temperature according to the first refrigerant saturation temperature to determine the first indoor coil temperature.

[0060] The first indoor coil temperature is the actual indoor coil temperature obtained by correcting the indoor coil sampling temperature according to the first refrigerant saturation temperature.

[0061] After determining the first refrigerant saturation temperature, the temperature of the outlet portion of the indoor coil is substantially determined, which is very close to the overall temperature of the indoor coil, so that the indoor coil sampling temperature can be corrected according to the first refrigerant saturation temperature to obtain a more accurate indoor coil temperature.

[0062] In the refrigeration mode of the air conditioner, the refrigerant saturation pressure in the outdoor heat exchanger is determined according to the outdoor coil temperature, the compressor suction pressure is determined according to the refrigerant saturation pressure and the compressor discharge temperature, the first refrigerant saturation temperature corresponding to the compressor suction pressure, i.e. the compressor inlet refrigerant temperature, is determined, and then the indoor coil sampling temperature is corrected according to the compressor inlet refrigerant temperature to obtain a more accurate indoor coil temperature, which can avoid the inaccurate monitoring of the indoor heat exchanger tube temperature due to the large air volume of the air conditioner.

[0063] In some embodiments, S120, the compressor suction pressure is determined according to the refrigerant saturation pressure and the compressor discharge temperature, comprising:

[0064] S121, determining the first refrigerant energy at the outlet of the compressor according to the refrigerant saturation pressure and the compressor discharge temperature.

[0065] The first refrigerant energy is the refrigerant energy at the outlet of the compressor, which is generally related to the refrigerant pressure and the refrigerant temperature.

[0066] The first refrigerant energy is f(y), f(y) = M1*P 冷饱 +N1*T 排气 , M1 and N1 are constants, P 冷饱 is the refrigerant saturation pressure, and T 排气The compressor exhaust temperature.

[0067] S122, determining the compressor suction pressure according to the first refrigerant energy, the compressor operating frequency and the compressor power.

[0068] Wherein, f(y)=f(x)+a*H+b*φ, a, b are constants, H is the compressor operating frequency at the corresponding moment, φ is the compressor power at the corresponding moment, wherein f(x) is the refrigerant energy at the compressor inlet, and the refrigerant energy at the compressor inlet is f(x), f(x)=M2*P+N2*T 吸入 . 吸入 Wherein, M2, N2 are constants, P 吸入 is the compressor suction pressure, T 吸气 is the compressor suction temperature.

[0069] Wherein, according to the ideal gas state equation: Wherein, P is the pressure in the volume, V is the volume inside the volume, T is the temperature, and C is a constant, then the compressor suction pressure can be determined That is, Wherein, V1 is the internal volume of the compressor.

[0070] That is, T 吸气 is composed of P 吸入 . 吸气 Substitute f(x), and the relationship between f(y) and f(x) can determine the suction pressure.

[0071] In some embodiments, S140, the indoor coil sampling temperature of the indoor heat exchanger is corrected according to the first refrigerant saturation temperature, and the first indoor coil temperature is determined, including:

[0072] S141, determining the first difference between the first refrigerant saturation temperature and the indoor coil sampling temperature.

[0073] Wherein, the first refrigerant saturation temperature is T 饱和1 , the indoor coil sampling temperature is T 采样 , the first difference Q1, that is, Q1=T 饱和1 -T 采样 .

[0074] S142, when the absolute value of the first difference is less than or equal to the set difference, the first indoor coil temperature is determined according to the first refrigerant saturation temperature and the indoor coil sampling temperature.

[0075] S143, when the absolute value of the first difference is greater than the set difference, the first refrigerant saturation temperature is taken as the first indoor coil temperature.

[0076] The absolute value of the first difference represents a deviation of the first refrigerant saturation temperature from the indoor coil sampling temperature, and the set difference is a pre-stored value in the controller of the air conditioner for determining a degree of deviation of the first refrigerant saturation temperature from the indoor coil sampling temperature; when the absolute value of the first difference is greater than the set difference, it represents that the indoor coil sampling temperature deviates greatly from the first refrigerant saturation temperature, at this time, the indoor coil sampling temperature may have a large error from the actual coil temperature, and therefore, the first refrigerant saturation temperature is taken as the first indoor coil temperature; when the absolute value of the first difference is less than the set difference, it represents that the indoor coil sampling temperature deviates less from the first refrigerant saturation temperature, and the first indoor coil temperature can be determined according to the first refrigerant saturation temperature and the indoor coil sampling temperature, for example, the indoor coil sampling temperature is directly taken as the actual coil temperature, or an average value of the two is taken as the actual indoor coil temperature.

[0077] In some embodiments, S142, the first indoor coil temperature is determined according to the first refrigerant saturation temperature and the indoor coil sampling temperature, including:

[0078] The weighted average of the first refrigerant saturation temperature and the indoor coil sampling temperature is taken as the first indoor coil temperature.

[0079] The first refrigerant saturation temperature is T 饱和1 , and the indoor coil sampling temperature is T 采样 , and the weighted average of the two is A and B are pre-stored weights in the controller, and generally A=0.6 and B=0.4, that is, when the deviation of the first refrigerant saturation temperature and the indoor coil sampling temperature is small, the weight of the indoor coil sampling temperature is relatively small due to the influence of external air, so as to avoid the influence of inaccurate sampling on the final result.

[0080] In some embodiments, the tube temperature correction method further includes:

[0081] S210, when the air conditioner is in a heating mode, the refrigerant evaporation pressure of the outdoor heat exchanger is determined according to the outdoor coil temperature.

[0082] After the outdoor coil temperature is determined, the refrigerant evaporation pressure corresponding to the outdoor coil temperature in the outdoor heat exchanger can be determined according to the relationship between the temperature and the pressure of the refrigerant in the outdoor heat exchanger in the heating mode, under the condition that the outdoor coil temperature is known.

[0083] Specifically, a plurality of outdoor coil temperatures and a plurality of refrigerant evaporation pressures corresponding thereto are stored in the controller of the air conditioner, and after the outdoor coil temperature is determined, a refrigerant evaporation pressure corresponding thereto can be determined.

[0084] S220, the compressor discharge pressure is determined according to the refrigerant evaporation pressure and the compressor suction temperature.

[0085] The compressor suction temperature is the temperature of the suction gas at the compressor inlet.

[0086] In the heating mode, the refrigerant flows from the outdoor heat exchanger to the compressor inlet, i.e., the refrigerant evaporation pressure represents the compressor suction pressure.

[0087] In the case where the compressor suction temperature and the compressor suction pressure (refrigerant evaporation pressure) are known, the air conditioner can determine the compressor discharge pressure according to the preset program.

[0088] S230, determining the second refrigerant saturation temperature corresponding to the compressor discharge pressure.

[0089] The controller of the air conditioner stores a plurality of compressor discharge pressures and a plurality of second refrigerant saturation temperatures corresponding thereto, so that after the compressor discharge pressure is determined, the second refrigerant saturation temperature corresponding to the compressor discharge pressure can be determined.

[0090] In the heating mode, the refrigerant flows from the compressor to the indoor heat exchanger, so the determined second refrigerant saturation temperature substantially corresponds to the temperature of the indoor coil inlet portion of the indoor heat exchanger.

[0091] S240, correcting the indoor coil sampling temperature according to the second refrigerant saturation temperature to determine the second indoor coil temperature.

[0092] After the second refrigerant saturation temperature is determined, the temperature of the indoor coil inlet portion is substantially determined, which is very close to the overall temperature of the indoor coil, so that the indoor coil sampling temperature can be corrected according to the second refrigerant saturation temperature to obtain a more accurate indoor coil temperature.

[0093] That is, in the heating mode of the air conditioner, the refrigerant evaporation pressure in the outdoor heat exchanger is determined according to the outdoor coil temperature, the compressor discharge pressure is determined according to the refrigerant evaporation pressure and the compressor suction temperature, the second refrigerant saturation temperature corresponding to the compressor discharge pressure, i.e., the compressor outlet refrigerant temperature, is determined, and then the indoor coil sampling temperature is corrected according to the compressor outlet refrigerant temperature to obtain a more accurate indoor coil temperature.

[0094] In some embodiments, S220, determining the compressor discharge pressure according to the refrigerant evaporation pressure and the compressor suction temperature, comprises:

[0095] S221, determining the second refrigerant energy at the compressor inlet according to the refrigerant evaporation pressure and the compressor suction temperature.

[0096] Wherein, the second refrigerant energy is the refrigerant energy at the compressor inlet, which is generally related to the refrigerant pressure and the refrigerant temperature.

[0097] Wherein, the second refrigerant energy f(x), f(x) = M2*P 蒸发 +N2*T 吸入 , M2, N2 are constants, P 蒸发 is the refrigerant evaporation pressure, T 吸气 is the compressor suction temperature.

[0098] S222, according to the compressor operating frequency, the compressor power, the second refrigerant energy, determine the compressor discharge pressure.

[0099] Wherein, f(y) = f(x) + a*H + b*φ, wherein a, b are constants, H is the compressor operating frequency at the corresponding moment, φ is the compressor power at the corresponding moment, wherein f(y) is the refrigerant energy at the compressor outlet, the compressor operating frequency and the compressor power can be directly queried by the controller.

[0100] Wherein, f(y) = M1*P 排气 +N1*T 排气 , P 排气 is the compressor discharge pressure, T 排气 is the compressor discharge temperature.

[0101] Wherein, according to the ideal gas state equation: Wherein, P is the pressure inside the volume, V is the volume inside the volume, T is the temperature, C is a constant, then the second refrigerant saturation temperature can be determined That is, Wherein, V1 is the internal volume of the compressor.

[0102] That is, T 排气 is composed of P 排气 Substitute f(y), according to the relationship between f(y) and f(x), the compressor discharge pressure can be determined.

[0103] In some embodiments, S240, according to the second refrigerant saturation temperature, the indoor coil sampling temperature is corrected, the second indoor coil temperature is determined, including:

[0104] S241, determine the second difference between the second refrigerant saturation temperature and the indoor coil sampling temperature.

[0105] Wherein, the first refrigerant saturation temperature is T 饱和2 , the indoor coil sampling temperature is T 采样 , the second difference Q2, that is, Q2 = T 饱和2 -T 采样 .

[0106] S242, when determining that the absolute value of the second difference is less than or equal to the set difference, determining the second indoor coil temperature according to the second refrigerant saturation temperature and the indoor coil sampling temperature.

[0107] S243, when determining that the absolute value of the second difference is greater than the set difference, taking the second refrigerant saturation temperature as the second indoor coil temperature.

[0108] The absolute value of the second difference represents the deviation of the second refrigerant saturation temperature and the indoor coil sampling temperature, and the set difference is a pre-stored value in the controller of the air conditioner for determining the degree of deviation of the second refrigerant saturation temperature and the indoor coil sampling temperature. When the absolute value of the second difference is greater than the set difference, it means that the deviation of the indoor coil sampling temperature and the second refrigerant saturation temperature is too large, and at this time, the error between the indoor coil sampling temperature and the actual coil temperature is large. Therefore, the second refrigerant saturation temperature is taken as the second indoor coil temperature. When the absolute value of the second difference is less than the set difference, it means that the deviation of the indoor coil sampling temperature and the second refrigerant saturation temperature is small, and the second indoor coil temperature can be determined according to the second refrigerant saturation temperature and the indoor coil sampling temperature. For example, the indoor coil sampling temperature can be directly used as the actual coil temperature, or the average of the two can be taken as the actual indoor coil temperature.

[0109] In some embodiments, S242, determining the second indoor coil temperature according to the second refrigerant saturation temperature and the indoor coil sampling temperature, comprises:

[0110] Taking the weighted average of the second refrigerant saturation temperature and the indoor coil sampling temperature as the second indoor coil temperature.

[0111] The second refrigerant saturation temperature is T 饱和2 , and the indoor coil sampling temperature is T 采样 , and the weighted average of the two is Wherein, A and B are pre-stored weights in the controller. Generally, A=0.6 and B=0.4. That is, when the deviation of the second refrigerant saturation temperature and the indoor coil sampling temperature is small, the weight of the indoor coil sampling temperature should be relatively small to avoid the influence of inaccurate sampling on the final result.

[0112] In some embodiments, the present application also provides a pipe temperature correction device 10, comprising an acquisition module 100 and a control module 300. The acquisition module 100 is configured to acquire an outdoor coil temperature of an outdoor heat exchanger and a compressor discharge temperature. The control module 300 is configured to determine a refrigerant saturation pressure in the outdoor heat exchanger according to the outdoor coil temperature of the outdoor heat exchanger. The control module 300 is configured to determine a compressor suction pressure according to the refrigerant saturation pressure and the compressor discharge temperature. The control module 300 is configured to determine a first refrigerant saturation temperature corresponding to the compressor suction pressure. The control module 300 is configured to correct an indoor coil sampling temperature of an indoor heat exchanger according to the first refrigerant saturation temperature to determine a first indoor coil temperature.

[0113] In some embodiments, the pipe temperature correction device 10 further comprises a judgment module 200, which is configured to determine whether an absolute value of a first difference is less than or equal to a set difference. The judgment module 200 is configured to determine whether an absolute value of a second difference is less than or equal to the set difference. The control module 300 is configured to determine the first indoor coil temperature according to the first refrigerant saturation temperature and the indoor coil sampling temperature when it is determined that the absolute value of the first difference is less than or equal to the set difference. The control module 300 is configured to determine a second indoor coil temperature according to the second refrigerant saturation temperature and the indoor coil sampling temperature when it is determined that the absolute value of the second difference is less than or equal to the set difference.

[0114] In some embodiments, the present application also provides an air conditioner, which can include a processor 601 with one or more processing cores, a memory 602 with one or more computer readable storage media, a power supply 603, an input unit 604, and the like. Those skilled in the art can understand that the structure of the air conditioner described above does not constitute a limitation on the air conditioner, and can include more or fewer components, or combine certain components, or different component arrangements. Among them:

[0115] The processor 601 is a controller of the air conditioner, which connects various parts of the air conditioner through various interfaces and lines, executes various functions of the air conditioner and processes data by running or executing software programs and / or modules stored in the memory 602 and calling data stored in the memory 602, thereby monitoring the air conditioner as a whole. Optionally, the processor 601 can include one or more processing cores; preferably, the processor 601 can integrate an application processor 601 and a modem processor 601, wherein the application processor 601 mainly processes operating systems, user interfaces, computer programs, etc., and the modem processor 601 mainly processes wireless communication. It can be understood that the above-mentioned modem processor 601 can also not be integrated into the processor 601.

[0116] The memory 602 can be used to store software programs and modules, and the processor 601 executes various functions and data processing by running the software programs and modules stored in the memory. The memory can mainly include a program storage area and a data storage area, wherein the program storage area can store an operating system, computer programs required by at least one function (such as a sound playing function, an image playing function, etc.), and the like; and the data storage area can store data created according to the use of the server, etc. In addition, the memory can include a high-speed random access memory, and can also include a non-volatile memory, such as at least one magnetic disk storage device, a flash memory device, or other volatile solid-state memory device. Accordingly, the memory can also include a memory controller to provide the processor 601 with access to the memory.

[0117] The air conditioner also includes a power supply 603 for supplying power to various components. Preferably, the power supply 603 can be logically connected to the processor 601 through a power management system, so as to realize functions such as management of charging, discharging, and power consumption management through the power management system. The power supply can also include one or more than one direct current or alternating current power supply, a recharging system, a power failure detection circuit, a power converter or inverter, a power status indicator, and the like.

[0118] The air conditioner can also include an input unit 604, which can be used to receive input digital or character information, and generate keyboard, mouse, joystick, optical or trackball signal inputs related to user settings and function controls.

[0119] Although not shown, the air conditioner can also include a display unit, etc., which will not be described here. Specifically, in the present embodiment, the processor 601 in the air conditioner will load executable files corresponding to the processes of one or more than one computer program into the memory 602 according to the following instructions, and run the computer programs stored in the memory 602 by the processor 601 to perform the following steps:

[0120] When the air conditioner is in a cooling mode, the refrigerant saturation pressure in the outdoor heat exchanger is determined according to the outdoor coil temperature of the outdoor heat exchanger;

[0121] The compressor suction pressure is determined according to the refrigerant saturation pressure and the compressor discharge temperature;

[0122] The first refrigerant saturation temperature corresponding to the compressor suction pressure is determined;

[0123] The first indoor coil temperature is determined by correcting the indoor coil sampling temperature of the indoor heat exchanger according to the first refrigerant saturation temperature.

[0124] By executing the above steps, when the air conditioner is in the cooling mode, the refrigerant saturation pressure in the outdoor heat exchanger is determined according to the outdoor coil temperature, the compressor suction pressure is determined according to the refrigerant saturation pressure and the compressor discharge temperature, the first refrigerant saturation temperature corresponding to the compressor suction pressure, i.e., the compressor inlet refrigerant temperature, is determined, and then the indoor coil sampling temperature is corrected according to the compressor refrigerant inlet temperature to obtain a more accurate indoor coil temperature, which can avoid the inaccurate indoor heat exchanger tube temperature monitoring due to the large air volume of the air conditioner.

[0125] Those skilled in the art can understand that all or part of the steps in any of the methods of the above embodiments can be completed by a computer program or by controlling related hardware by a computer program, which can be stored in a computer readable storage medium and loaded and executed by the processor 601.

[0126] In some embodiments, the application also provides a storage medium storing a computer program, which is loaded and executed by a processor to perform the following steps:

[0127] When the air conditioner is in the cooling mode, the refrigerant saturation pressure in the outdoor heat exchanger is determined according to the outdoor coil temperature of the outdoor heat exchanger;

[0128] The compressor suction pressure is determined according to the refrigerant saturation pressure and the compressor discharge temperature;

[0129] The first refrigerant saturation temperature corresponding to the compressor suction pressure is determined;

[0130] The first indoor coil temperature is determined by correcting the indoor coil sampling temperature of the indoor heat exchanger according to the first refrigerant saturation temperature.

[0131] By executing the above steps, when the air conditioner is in the cooling mode, the refrigerant saturation pressure in the outdoor heat exchanger is determined according to the outdoor coil temperature, the compressor suction pressure is determined according to the refrigerant saturation pressure and the compressor discharge temperature, the first refrigerant saturation temperature corresponding to the compressor suction pressure, i.e., the compressor inlet refrigerant temperature, is determined, and then the indoor coil sampling temperature is corrected according to the compressor refrigerant inlet temperature to obtain a more accurate indoor coil temperature, which can avoid the inaccurate indoor heat exchanger tube temperature monitoring due to the large air volume of the air conditioner.

[0132] As will be appreciated by one of ordinary skill in the art, any reference to storage, memory, database or other medium can include non-volatile and / or volatile storage. Non-volatile storage can include read only memory (ROM), programmable ROM (PROM), electrically programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM), or flash memory. Volatile storage can include random access memory (RAM), or external cache memory. By way of illustration, and not limitation, RAM is available in many forms such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDR SDRAM), enhanced SDRAM (ESDRAM), Synchlink DRAM (SLDRAM), Rambus direct RAM (RDRAM), direct Rambus dynamic RAM (DRDRAM), and Rambus dynamic RAM (RDRAM). The RAM can also include a basic-0 type (B0-RAM), a basic-1 type (B1-RAM), or new types as these

[0133] The steps in the air conditioner pipe temperature correction method of any one of the embodiments provided by the present application can be executed due to the computer program stored in the storage medium, thus the beneficial effects that can be achieved by the air conditioner pipe temperature correction method of any one of the embodiments provided by the present application can be achieved, which will be described in detail in the foregoing embodiments and will not be repeated here.

[0134] The specific implementation of the above operations can be seen from the foregoing embodiments and will not be repeated here.

[0135] In the above embodiments, the description of each embodiment has its own focus, and the parts not described in detail in a certain embodiment can be seen from the detailed description of other embodiments above, and will not be repeated here.

[0136] The above is only optional embodiments of the present application, and does not limit the patent scope of the present application, and any equivalent structural transformation made by using the content of the present application specification and drawings, or direct / indirect application in other related technical fields is included in the patent protection scope of the present application.

Claims

1. A pipe temperature correction method characterized by, The pipe temperature correction method comprises: When the air conditioner is in a cooling mode, determining a refrigerant saturation pressure in the outdoor heat exchanger according to an outdoor coil temperature of the outdoor heat exchanger; According to the refrigerant saturation pressure and the compressor discharge temperature, the compressor suction pressure is determined, comprising: according to the refrigerant saturation pressure and the compressor discharge temperature, the first refrigerant energy of the compressor outlet is determined, according to the first refrigerant energy, the compressor operating frequency and the compressor power, the compressor suction pressure is determined, wherein, wherein a, b are constants, is the compressor operating frequency at the corresponding moment, is the power of the compressor at the corresponding moment, wherein, is the refrigerant energy of the compressor inlet, is the first refrigerant energy; According to the compressor suction pressure, determining a first refrigerant saturation temperature corresponding thereto; According to the first refrigerant saturation temperature, correcting an indoor coil sampling temperature of the indoor heat exchanger to determine a first indoor coil temperature.

2. The pipe temperature correction method according to claim 1, characterized by According to the first refrigerant saturation temperature, correcting an indoor coil sampling temperature of the indoor heat exchanger to determine a first indoor coil temperature, comprising: Determining a first difference value of the first refrigerant saturation temperature and the indoor coil sampling temperature; When determining that an absolute value of the first difference value is less than or equal to a set difference value, determining a first indoor coil temperature according to the first refrigerant saturation temperature and the indoor coil sampling temperature; When determining that the absolute value of the first difference value is greater than the set difference value, taking the first refrigerant saturation temperature as the first indoor coil temperature.

3. The tube temperature correction method according to claim 2, characterized by According to the first refrigerant saturation temperature and the indoor coil sampling temperature, determining a first indoor coil temperature, comprising: Taking a weighted average value of the first refrigerant saturation temperature and the indoor coil sampling temperature as the first indoor coil temperature.

4. The tube temperature correction method according to claim 1, characterized by The pipe temperature correction method further comprises: When the air conditioner is in a heating mode, determining a refrigerant evaporation pressure of the outdoor heat exchanger according to the outdoor coil temperature; According to the refrigerant evaporation pressure and the compressor suction temperature, determining a compressor discharge pressure; According to the compressor discharge pressure, determining a second refrigerant saturation temperature corresponding thereto; According to the second refrigerant saturation temperature, correcting the indoor coil sampling temperature to determine a second indoor coil temperature.

5. The tube temperature correction method according to claim 4, characterized by According to the refrigerant evaporation pressure and the compressor suction temperature, determining a compressor discharge pressure, comprising: According to the refrigerant evaporation pressure and the compressor suction temperature, determining a second refrigerant energy of a compressor inlet; According to the compressor operating frequency, the compressor power and the second refrigerant energy, determining the compressor discharge pressure.

6. The tube temperature correction method according to claim 4, characterized by According to the second refrigerant saturation temperature, correcting the indoor coil sampling temperature to determine a second indoor coil temperature, comprising: Determining a second difference value of the second refrigerant saturation temperature and the indoor coil sampling temperature; When determining that an absolute value of the second difference value is less than or equal to a set difference value, determining the second indoor coil temperature according to the second refrigerant saturation temperature and the indoor coil sampling temperature; When determining that the absolute value of the second difference value is greater than the set difference value, determining the second refrigerant saturation temperature as the second indoor coil temperature.

7. A pipe temperature correction device characterized by comprising: Comprising: An acquisition module is configured to acquire an outdoor coil temperature of an outdoor heat exchanger and a compressor discharge temperature; A control module is configured to, when the air conditioner is in a cooling mode, determine a refrigerant saturation pressure in the outdoor heat exchanger according to an outdoor coil temperature of the outdoor heat exchanger; determining a first refrigerant saturation temperature corresponding to the compressor suction pressure according to the compressor suction pressure; and determining a first indoor coil temperature by correcting an indoor coil temperature of the indoor heat exchanger according to the first refrigerant saturation temperature; When the air conditioner is in the cooling mode, the control module is further configured to determine a compressor suction pressure according to the refrigerant saturation pressure and the compressor discharge temperature, comprising: determining a first refrigerant energy at the compressor outlet according to the refrigerant saturation pressure and the compressor discharge temperature; determining a compressor suction pressure according to the first refrigerant energy, a compressor operating frequency and a compressor power; wherein, wherein a, b are constants, is the compressor operating frequency at the corresponding time, is the compressor power at the corresponding time, wherein, is the refrigerant energy at the compressor inlet, is the first refrigerant energy.

8. An air conditioner characterized by comprising: The memory stores a computer program, and the processor is configured to execute the computer program in the memory to perform the steps in the pipe temperature correction method of any one of claims 1-6.

9. A storage medium, characterized by The storage medium stores a computer program, and the computer program is loaded and executed by the processor to perform the steps in the pipe temperature correction method of any one of claims 1-6.

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