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

Abstract

The invention discloses a pipe temperature correction method and device, an air conditioner and a storage medium. The pipe temperature correction method comprises the steps that when the air conditioner is in a refrigeration mode, the refrigerant saturation pressure in an outdoor heat exchanger is determined according to the outdoor coil pipe temperature of the outdoor heat exchanger; determining the suction pressure of the compressor according to the refrigerant saturation pressure and the exhaust temperature of the compressor; determining a first refrigerant saturation temperature corresponding to the compressor suction pressure according to the compressor suction pressure; according to the first refrigerant saturation temperature, the indoor coil pipe sampling temperature of the indoor heat exchanger is corrected, and the first indoor coil pipe temperature is determined; the indoor coil pipe sampling temperature is corrected according to the compressor refrigerant inlet temperature, the accurate indoor coil pipe temperature is obtained, and the situation that due to the large air volume of an air conditioner, the indoor heat exchanger pipe temperature monitoring is not accurate can be avoided.

Description

Technical Field

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

[0002] An air conditioner is a device that directly provides processed air to a room or other enclosed area, and can adjust the indoor temperature, humidity, cleanliness, and air flow speed (freshness). Most air conditioners on the market are split-type air conditioners, that is, the air conditioner consists of two parts: an indoor unit and an outdoor unit.

[0003] Since the temperature sensing package of the indoor heat exchanger in the existing indoor unit is in direct contact with the air duct airflow and the pipe clamp, when the air conditioner is in a high air volume working state, the accuracy of the sampling temperature of the sensing package will be affected, resulting in inaccurate pipe temperature of the indoor heat exchanger fed back by the sensing package. Summary of the invention

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

[0005] An embodiment of the present invention provides a pipe temperature correction method, the pipe temperature correction method comprising:

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

[0007] Determining the compressor suction pressure according to the refrigerant saturation pressure and the compressor exhaust temperature;

[0008] Determining a first refrigerant saturation temperature corresponding to the compressor suction pressure;

[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 invention, determining the compressor suction pressure according to the refrigerant saturation pressure and the compressor exhaust temperature includes:

[0011] Determine the first refrigerant energy at the compressor outlet according to the refrigerant saturation pressure and the compressor exhaust 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 invention, 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, including:

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

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

[0016] When it is determined that the absolute value of the first difference is greater than the set difference, the first refrigerant saturation temperature is used as the first indoor coil temperature.

[0017] In some embodiments of the present invention, determining the first indoor coil temperature according to the first refrigerant saturation temperature and the indoor coil sampling temperature includes:

[0018] The weighted average of the first refrigerant saturation temperature and the indoor coil sampling temperature is taken as the first indoor coil temperature.

[0019] In some embodiments of the present invention, the pipe temperature correction method further includes:

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

[0021] Determining the compressor exhaust pressure according to the refrigerant evaporation pressure and the compressor suction temperature;

[0022] Determining a second refrigerant saturation temperature corresponding to the compressor exhaust pressure;

[0023] The indoor coil sampling temperature is corrected according to the second refrigerant saturation temperature to determine the second indoor coil temperature.

[0024] In some embodiments of the present invention, determining the compressor exhaust pressure according to the refrigerant evaporation pressure and the compressor suction temperature includes:

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

[0026] The compressor exhaust pressure is determined according to the compressor operating frequency, the compressor power, and the second refrigerant energy.

[0027] In some embodiments of the present invention, the method of correcting the indoor coil sampling temperature according to the second refrigerant saturation temperature to determine the second indoor coil temperature includes:

[0028] Determining a second difference between the second refrigerant saturation temperature and the indoor coil sampling temperature;

[0029] When it is determined 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;

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

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

[0032] An acquisition module, used to obtain the outdoor coil temperature of the outdoor heat exchanger and the exhaust temperature of the compressor;

[0033] A control module is used to determine the refrigerant saturation pressure in the outdoor heat exchanger according to the outdoor coil temperature of the outdoor heat exchanger; to determine the compressor suction pressure according to the refrigerant saturation pressure and the compressor exhaust temperature; to determine the first refrigerant saturation temperature corresponding to the compressor suction pressure; and to correct the indoor coil sampling temperature of the indoor heat exchanger according to the first refrigerant saturation temperature to determine the first indoor coil temperature.

[0034] In some embodiments of the present invention, an air conditioner is also provided, including a memory and a processor, wherein the memory stores a computer program, and the processor is used 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 invention, a storage medium is further provided, wherein the storage medium stores a computer program, and the computer program is loaded and executed by a processor to execute the steps in the above-mentioned pipe temperature correction method.

[0036] Embodiments of the present invention provide a pipe temperature correction method, device, air conditioner and storage medium. When the air conditioner is in cooling mode, the pipe temperature correction method determines the refrigerant saturation pressure in the outdoor heat exchanger according to the outdoor coil temperature, determines the compressor suction pressure according to the refrigerant saturation pressure and the compressor exhaust temperature, and determines the first refrigerant saturation temperature corresponding to the compressor suction pressure, that is, the compressor inlet refrigerant temperature. 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 inaccurate monitoring of the indoor heat exchanger pipe temperature due to the large air volume of the air conditioner. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0038] Figure 1 A schematic diagram of the process of a pipe temperature correction method in cooling according to an embodiment of the present invention;

[0039] Figure 2 A schematic diagram of the process of a pipe temperature correction method in heating according to an embodiment of the present invention;

[0040] Figure 3 A schematic diagram of the structure of a pipe temperature correction device according to an embodiment of the present invention;

[0041] Figure 4 The figure is a schematic structural diagram of an air conditioner according to an embodiment of the present invention.

[0042] Figure numerals: 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 following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

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

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

[0046] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing in the full text includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme that satisfies both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in the field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0047] like Figure 1-Figure 4 As shown, the present invention provides a pipe temperature correction method, which comprises:

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

[0049] Among them, after determining the outdoor coil temperature, the refrigerant saturation pressure corresponding to the outdoor coil temperature in the outdoor heat exchanger can be determined based on the relationship between the temperature and pressure of the refrigerant in the outdoor heat exchanger during cooling, when the outdoor coil temperature is known.

[0050] Specifically, for example, a controller of the air conditioner stores a plurality of outdoor coil temperatures and a plurality of refrigerant saturation pressures corresponding to the outdoor coil temperatures. 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 exhaust temperature.

[0052] The compressor exhaust temperature is the exhaust temperature at the compressor outlet.

[0053] Among them, in the cooling 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 exhaust pressure of the outdoor compressor outlet.

[0054] Wherein, when the exhaust temperature and exhaust pressure at the compressor outlet are known, the controller of the air conditioner can determine the suction pressure of the compressor according to a preset program.

[0055] S130: Determine a first refrigerant saturation temperature corresponding to the compressor suction pressure.

[0056] The controller of the air conditioner stores a plurality of suction pressures and the first refrigerant saturation temperatures corresponding thereto. Therefore, after the suction pressure is determined, the first refrigerant saturation temperature corresponding thereto 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 cooling mode, the first refrigerant saturation temperature substantially corresponds to the temperature of the indoor coil outlet portion of the indoor heat exchanger.

[0059] S140: Correct the indoor coil sample temperature of the indoor heat exchanger according to the first refrigerant saturation temperature to determine a first indoor coil temperature.

[0060] The first indoor coil temperature is the actual indoor coil temperature obtained after the controller corrects the indoor coil sampling temperature according to the first refrigerant saturation temperature.

[0061] Among them, after determining the first refrigerant saturation temperature, what is actually determined is the temperature of the indoor coil outlet, which is very close to the overall temperature of the indoor coil. Therefore, the indoor coil sampling temperature can be corrected according to the first refrigerant saturation temperature to obtain a more accurate indoor coil temperature.

[0062] When the air conditioner is in 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 exhaust temperature, and the corresponding first refrigerant saturation temperature, that is, the compressor inlet refrigerant temperature, is determined according to the compressor suction pressure. 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 inaccurate monitoring of the indoor heat exchanger tube temperature due to the large air volume of the air conditioner.

[0063] In some embodiments, S120, determining the compressor suction pressure according to the refrigerant saturation pressure and the compressor exhaust temperature, includes:

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

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

[0066] Among them, the first refrigerant energy is f(y), f(y) = M1*P 冷饱 +N1*T 排气 , M1, N1 are constants, P 冷饱 is the refrigerant saturation pressure, T 排气is 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] Among them, f(y)=f(x)+a*H+b*φ, where a and b are constants, H is the compressor operating frequency at the corresponding time, φ is the compressor power at the corresponding time, among which 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 吸入 +N2*T 吸入 , where M2 and N2 are constants, P 吸入 is the compressor suction pressure, T 吸气 is the compressor suction temperature.

[0069] According to the ideal gas state equation: Where P is the pressure inside the volume, V is the internal volume of the volume, T is the temperature, and C is a constant, then we can determine Right now, Wherein, V1 is the internal volume of the compressor.

[0070] That is, by P 吸入 Composed of T 吸气 Substituting f(x) into f(y), the inspiratory pressure can be determined based on the relationship between f(x) and f(y).

[0071] In some embodiments, S140, correcting the indoor coil sample temperature of the indoor heat exchanger according to the first refrigerant saturation temperature to determine the first indoor coil temperature includes:

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

[0073] Among them, the saturation temperature of the first refrigerant 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 it is determined that the absolute value of the first difference is less than or equal to the set difference, determine the first indoor coil temperature according to the first refrigerant saturation temperature and the indoor coil sampling temperature.

[0075] S143: When it is determined that the absolute value of the first difference is greater than the set difference, the first refrigerant saturation temperature is used as the first indoor coil temperature.

[0076] Among them, the absolute value of the first difference represents the deviation between the first refrigerant saturation temperature and the indoor coil sampling temperature, and the set difference is pre-stored in the controller of the air conditioner for determining the degree of deviation between the first refrigerant saturation temperature and the indoor coil sampling temperature; when the absolute value of the first difference is greater than the set difference, it means that the deviation between the indoor coil sampling temperature and the first refrigerant saturation temperature is too large. At this time, the error between the indoor coil sampling temperature and the actual coil temperature may be large. Therefore, the first refrigerant saturation temperature is used as the first indoor coil temperature; when the absolute value of the first difference is less than the set difference, it means that the deviation between the indoor coil sampling temperature and the first refrigerant saturation temperature is small. The first indoor coil temperature can be determined based on the first refrigerant saturation temperature and the indoor coil sampling temperature. For example, the indoor coil sampling temperature is directly used as the actual coil temperature, or the average of the two can be taken as the actual indoor coil temperature.

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

[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] Among them, the saturation temperature of the first refrigerant is T 饱和1 , the indoor coil sampling temperature is T 采样 , then the weighted average of the two is Among them, A and B are weights pre-stored in the controller, generally A=0.6, B=0.4, that is, when the deviation between the first refrigerant saturation temperature and the indoor coil sampling temperature is small, the indoor coil sampling temperature is affected by the external air, so the weight should be relatively small to avoid inaccurate sampling affecting the final result.

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

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

[0082] Among them, after determining the outdoor coil temperature, the refrigerant evaporation pressure in the outdoor heat exchanger corresponding to the outdoor coil temperature may be determined based on the relationship between the temperature and pressure of the refrigerant in the outdoor heat exchanger during heating, if the outdoor coil temperature is known.

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

[0084] S220, determining the compressor exhaust pressure according to the refrigerant evaporation pressure and the compressor suction temperature.

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

[0086] In the heating mode, the refrigerant flows out of the outdoor heat exchanger and then flows into the compressor through the compressor inlet. That is, the evaporation pressure of the refrigerant can represent the suction pressure of the compressor.

[0087] Among them, when the suction temperature at the compressor inlet and the compressor suction pressure (refrigerant evaporation pressure) are known, the air conditioner can determine the compressor exhaust pressure according to a preset value program.

[0088] S230: Determine a second refrigerant saturation temperature corresponding to the compressor exhaust pressure.

[0089] Among them, the controller of the air conditioner stores multiple compressor exhaust pressures and multiple second refrigerant saturation temperatures corresponding to them. Therefore, after determining the exhaust pressure of the compressor, the corresponding second refrigerant saturation temperature can be determined according to the compressor exhaust pressure.

[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: Correct the indoor coil sample temperature according to the second refrigerant saturation temperature to determine the second indoor coil temperature.

[0092] Among them, after determining the second refrigerant saturation temperature, the temperature of the indoor coil inlet is actually determined, which is very close to the overall temperature of the indoor coil. Therefore, the indoor coil sampling temperature can be corrected according to the second refrigerant saturation to obtain a more accurate indoor coil temperature.

[0093] That is, it can be understood that when the air conditioner is in heating mode, the refrigerant evaporation pressure in the outdoor heat exchanger is determined according to the outdoor coil temperature, the compressor exhaust pressure is determined according to the refrigerant evaporation pressure and the compressor suction temperature, and the corresponding second refrigerant saturation temperature, that is, the compressor outlet refrigerant temperature, is determined according to the compressor exhaust pressure. 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 exhaust pressure according to the refrigerant evaporation pressure and the compressor suction temperature includes:

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

[0096] 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 , where M2 and N2 are constants, P 蒸发 is the refrigerant evaporation pressure, T 吸气 is the compressor suction temperature.

[0098] S222, determining the compressor exhaust pressure according to the compressor operating frequency, the compressor power, and the second refrigerant energy.

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

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

[0101] According to the ideal gas state equation: Where P is the pressure inside the volume, V is the internal volume of the volume, T is the temperature, and C is a constant, then we can determine Right now, Wherein, V1 is the internal volume of the compressor.

[0102] That is, by P 排气 Composed of T 排气 Substituting f(y), the compressor discharge pressure can be determined based on the relationship between f(y) and f(x).

[0103] In some embodiments, S240, correcting the indoor coil sample temperature according to the second refrigerant saturation temperature to determine the second indoor coil temperature includes:

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

[0105] Among them, the saturation temperature of the first refrigerant 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 it is determined that the absolute value of the second difference is less than or equal to the set difference, determine the second indoor coil temperature according to the second refrigerant saturation temperature and the indoor coil sampling temperature.

[0107] S243: When it is determined that the absolute value of the second difference is greater than the set difference, the second refrigerant saturation temperature is used as the second indoor coil temperature.

[0108] Among them, referring to the judgment logic of the first difference and the set difference in the above embodiment, the absolute value of the second difference represents the deviation between the second refrigerant saturation temperature and the indoor coil sampling temperature, and the set difference is pre-stored in the controller of the air conditioner for determining the degree of deviation between 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 between the indoor coil sampling temperature and the second refrigerant saturation temperature is too large. At this time, the error between the indoor coil sampling temperature and the actual coil temperature may be large. Therefore, the second refrigerant saturation temperature is used 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 between the indoor coil sampling temperature and the second refrigerant saturation temperature is small. The second indoor coil temperature can be determined based on the second refrigerant saturation temperature and the indoor coil sampling temperature. For example, the indoor coil sampling temperature is directly used as the actual coil temperature, or the average value 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 includes:

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

[0111] Among them, the second refrigerant saturation temperature is T 饱和2 , the indoor coil sampling temperature is T 采样 , then the weighted average of the two is Among them, A and B are weights pre-stored in the controller, generally A=0.6, B=0.4, that is, when the deviation between the second refrigerant saturation temperature and the indoor coil sampling temperature is small, the indoor coil sampling temperature is affected by the external air, so the weight should be relatively small to avoid inaccurate sampling affecting the final result.

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

[0113] In some embodiments, the pipe temperature correction device 10 further includes a judgment module 200, which is used to determine whether the absolute value of the first difference is less than or equal to the set difference. The judgment module 200 is used to determine whether the absolute value of the second difference is less than or equal to the set difference. The control module 300 is used 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 used to determine the 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 invention further provides an air conditioner, which may include one or more processors 601 of processing cores, one or more computer-readable storage media memories 602, a power supply 603, an input unit 604 and other components. Those skilled in the art will appreciate that the structure of the air conditioner described above does not constitute a limitation on the air conditioner, and may include more or fewer components, or combine certain components, or arrange the components differently. Among them:

[0115] The processor 601 is the controller of the air conditioner, and uses various interfaces and lines to connect various parts of the entire air conditioner. By running or executing software programs and / or modules stored in the memory 602, and calling data stored in the memory 602, the processor 601 performs various functions of the air conditioner and processes data, thereby monitoring the air conditioner as a whole. Optionally, the processor 601 may include one or more processing cores; preferably, the processor 601 may integrate an application processor 601 and a modem processor 601, wherein the application processor 601 mainly processes the operating system, user interface and computer programs, etc., and the modem processor 601 mainly processes wireless communications. It is understandable that the above-mentioned modem processor 601 may not be integrated into the processor 601.

[0116] The memory 602 can be used to store software programs and modules. The processor 601 executes various functional applications and data processing by running the software programs and modules stored in the memory. The memory may mainly include a program storage area and a data storage area, wherein the program storage area may store an operating system, a computer program required for at least one function (such as a sound playback function, an image playback function, etc.), etc.; the data storage area may store data created according to the use of the server, etc. In addition, the memory may include a high-speed random access memory, and may also include a non-volatile memory, such as at least one disk storage device, a flash memory device, or other volatile solid-state storage devices. Accordingly, the memory may 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 each component. Preferably, the power supply 603 can be logically connected to the processor 601 through a power management system, so as to manage charging, discharging, and power consumption through the power management system. The power supply can also include any components such as one or more DC or AC power supplies, recharging systems, power failure detection circuits, power converters or inverters, and power status indicators.

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

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

[0120] When the air conditioner is in 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] Determine the compressor suction pressure based on the refrigerant saturation pressure and compressor exhaust temperature;

[0122] According to the suction pressure of the compressor, determining the corresponding first refrigerant saturation temperature;

[0123] 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.

[0124] By executing the above steps, when the air conditioner is in 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 exhaust temperature, and the first refrigerant saturation temperature corresponding to the compressor suction pressure, that is, the compressor inlet refrigerant temperature, is determined according to the compressor suction pressure. 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 inaccurate monitoring of the indoor heat exchanger tube temperature due to the large air volume of the air conditioner.

[0125] A person skilled in the art will appreciate that all or part of the steps in any of the methods in the above embodiments may be completed by a computer program, or by controlling related hardware through a computer program. The computer program may be stored in a computer-readable storage medium and loaded and executed by the processor 601.

[0126] In some embodiments, the present invention further provides a storage medium, the storage medium stores a computer program, and the computer program is loaded by a processor to perform the following steps:

[0127] When the air conditioner is in 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] Determine the compressor suction pressure based on the refrigerant saturation pressure and compressor exhaust temperature;

[0129] According to the suction pressure of the compressor, determining the corresponding first refrigerant saturation temperature;

[0130] 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.

[0131] By executing the above steps, when the air conditioner is in 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 exhaust temperature, and the first refrigerant saturation temperature corresponding to the compressor suction pressure, that is, the compressor inlet refrigerant temperature, is determined according to the compressor suction pressure. 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 inaccurate monitoring of the indoor heat exchanger tube temperature due to the large air volume of the air conditioner.

[0132] It will be appreciated by those skilled in the art that any reference to memory, storage, database or other medium used in the embodiments provided by the present invention may include non-volatile and / or volatile memory. Non-volatile memory may include read-only memory (ROM), programmable ROM (PROM), electrically programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM) or flash memory. Volatile memory may include random access memory (RAM) or external cache memory. As an illustration and not limitation, RAM is available in a variety of forms, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDRSDRAM), enhanced SDRAM (ESDRAM), synchronous link (Synch l ink), DRAM (SLDRAM), memory bus (Rambus) direct RAM (RDRAM), direct memory bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM).

[0133] Since the computer program stored in the storage medium can execute the steps in the air-conditioning pipe temperature correction method in any embodiment provided by the present invention, the beneficial effects that can be achieved by the air-conditioning pipe temperature correction method in any embodiment provided by the present invention can be achieved. Please refer to the previous embodiments for details and will not be repeated here.

[0134] The specific implementation of the above operations can be found in the previous embodiments, which will not be described in detail here.

[0135] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, please refer to the detailed description of other embodiments above, and will not be repeated here.

[0136] The above descriptions are only optional embodiments of the present invention, and are not intended to limit the patent scope of the present invention. All equivalent structural changes made using the contents of the present invention's specification and drawings, or directly / indirectly applied in other related technical fields, within the application concept of the present invention are included in the patent protection scope of the present invention.

Claims

1. A pipe temperature correction method, characterized in that: The pipe temperature correction method comprises: When the air conditioner is in cooling mode, determining the refrigerant saturation pressure in the 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 exhaust temperature; Determining a first refrigerant saturation temperature corresponding to the compressor suction pressure; 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.

2. The pipe temperature correction method according to claim 1, characterized in that: Determining the compressor suction pressure according to the refrigerant saturation pressure and the compressor exhaust temperature includes: Determine the first refrigerant energy at the compressor outlet according to the refrigerant saturation pressure and the compressor exhaust temperature; The compressor suction pressure is determined according to the first refrigerant energy, the compressor operating frequency and the compressor power.

3. The pipe temperature correction method according to claim 1, characterized in that: 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 includes: Determining a first difference between 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, determining a 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 greater than the set difference, the first refrigerant saturation temperature is used as the first indoor coil temperature.

4. The pipe temperature correction method according to claim 3, characterized in that: Determining a first indoor coil temperature according to the first refrigerant saturation temperature and the indoor coil sampling temperature includes: The weighted average of the first refrigerant saturation temperature and the indoor coil sampling temperature is taken as the first indoor coil temperature.

5. The pipe temperature correction method according to claim 1, characterized in that: The pipe temperature correction method further includes: When the air conditioner is in heating mode, determining the refrigerant evaporation pressure of the outdoor heat exchanger according to the outdoor coil temperature; Determining the compressor exhaust pressure according to the refrigerant evaporation pressure and the compressor suction temperature; Determining a second refrigerant saturation temperature corresponding to the compressor exhaust pressure; The indoor coil sampling temperature is corrected according to the second refrigerant saturation temperature to determine the second indoor coil temperature.

6. The pipe temperature correction method according to claim 5, characterized in that: Determining the compressor exhaust pressure according to the refrigerant evaporation pressure and the compressor suction temperature includes: Determining the energy of the second refrigerant at the compressor inlet according to the refrigerant evaporation pressure and the compressor suction temperature; The compressor exhaust pressure is determined according to the compressor operating frequency, the compressor power, and the second refrigerant energy.

7. The pipe temperature correction method according to claim 5, characterized in that: The step of correcting the indoor coil sampling temperature according to the second refrigerant saturation temperature to determine the second indoor coil temperature includes: Determining a second difference between 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, determining the 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 greater than the set difference, the second refrigerant saturation temperature is determined as the second indoor coil temperature.

8. A pipe temperature correction device, characterized in that: include: An acquisition module, used to obtain the outdoor coil temperature of the outdoor heat exchanger and the exhaust temperature of the compressor; A control module, used for determining the refrigerant saturation pressure in the outdoor heat exchanger according to the outdoor coil temperature of the outdoor heat exchanger; Used to determine the compressor suction pressure based on the refrigerant saturation pressure and the compressor exhaust temperature; used to determine the first refrigerant saturation temperature corresponding to the compressor suction pressure; used to correct the indoor coil sampling temperature of the indoor heat exchanger based on the first refrigerant saturation temperature to determine the first indoor coil temperature.

9. An air conditioner, characterized in that: It comprises a memory and a processor, wherein the memory stores a computer program, and the processor is used to run the computer program in the memory to execute the steps in the pipe temperature correction method according to any one of claims 1 to 7.

10. A storage medium, characterized in that: The storage medium stores a computer program, and the computer program is loaded and executed by the processor to execute the steps in the pipe temperature correction method according to any one of claims 1 to 7.

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