Air conditioner, control method of air conditioner, and computer readable storage medium

Abstract

The application provides an air conditioner, a control method of the air conditioner and a computer readable storage medium, the air conditioner comprising: an outdoor unit heat exchanger, a compressor, a first evaporator and a second evaporator are communicated through pipelines, an exhaust bypass valve is installed on a first pipeline communicating the compressor and the second evaporator, and a suction bypass valve is installed on a second pipeline communicating the compressor and the second evaporator; and a controller is used for opening the exhaust bypass valve and the suction bypass valve when the working state of the air conditioner is a defrosting state, so that a first part of refrigerant discharged by the compressor flows through the outdoor unit heat exchanger and the first evaporator in sequence to control defrosting of the air conditioner, and a second part of refrigerant discharged by the compressor flows to the second evaporator through the exhaust bypass valve to control heating of the air conditioner. The air conditioner is provided with the suction and exhaust bypass valves and two evaporator modules, so that the refrigerant is divided into two paths in the defrosting mode, defrosting and heating are performed respectively, and the defrosting without stopping and continuous heating during defrosting are realized.

Description

Technical Field

[0001] This application relates to the field of air conditioner control, and more specifically, to an air conditioner, an air conditioner control method, and a computer-readable storage medium. Background Technology

[0002] During the defrosting period, the indoor unit of a current household air conditioner is stopped and cannot continuously provide heating to the room. When the outdoor humidity is high, the air conditioner will enter the defrosting process more frequently, affecting user comfort and reducing heating efficiency. Summary of the Invention

[0003] The main objective of this application is to provide an air conditioner, an air conditioner control method, and a computer-readable storage medium to at least solve the problem that existing household air conditioners cannot continuously heat during defrosting.

[0004] To achieve the above objectives, according to one aspect of this application, an air conditioner is provided, comprising: an outdoor unit heat exchanger; an indoor unit heat exchanger including a first evaporator, a second evaporator, an exhaust bypass valve, an intake bypass valve, and a compressor, wherein the outdoor unit heat exchanger is connected to the compressor, the first evaporator, and the second evaporator respectively via pipelines, the exhaust bypass valve is installed on a first pipeline connecting the compressor and the second evaporator, and the intake bypass valve is installed on a second pipeline connecting the compressor and the second evaporator; and a controller, configured to, when the air conditioner is in defrosting mode, open the exhaust bypass valve and the intake bypass valve, so that a first portion of refrigerant discharged by the compressor flows sequentially through the outdoor unit heat exchanger and the first evaporator to a refrigerant confluence point to control the defrosting of the air conditioner, and to allow a second portion of refrigerant discharged by the compressor to flow through the exhaust bypass valve to the second evaporator and through the intake bypass valve to the refrigerant confluence point to control the heating of the air conditioner, wherein the sum of the first portion of refrigerant and the second portion of refrigerant is the total refrigerant discharged by the compressor.

[0005] Optionally, the indoor unit heat exchanger further includes: a liquid receiver for storing the refrigerant, connected to the compressor via a pipeline; a four-way valve having a first port, a second port, a third port, and a fourth port, wherein the first port of the four-way valve is connected to the compressor via a pipeline, the second port of the four-way valve is connected to the outdoor unit heat exchanger via a pipeline, and the third port of the four-way valve is connected to the liquid receiver via a pipeline, wherein when the air conditioner is in defrosting or cooling mode, the first port and the second port of the four-way valve are connected, and the third port and the fourth port of the four-way valve are connected; when the air conditioner is in heating mode, the first port and the fourth port of the four-way valve are connected, and the second port and the third port of the four-way valve are connected; and a first electronic expansion valve installed on the pipeline connecting the fourth port of the four-way valve to the second evaporator, wherein when the air conditioner is in defrosting mode, the first electronic expansion valve is in a closed state.

[0006] Optionally, the indoor unit heat exchanger further includes: a second electronic expansion valve, installed on the pipeline between the outdoor unit heat exchanger and the first evaporator, which is in the open state when the air conditioner is in the defrosting state; and a third electronic expansion valve, installed on the pipeline between the outdoor unit heat exchanger and the second evaporator, which is in the closed state when the air conditioner is in the defrosting state.

[0007] According to another aspect of this application, a control method for an air conditioner is provided, applied to a controller for controlling any of the aforementioned air conditioners. The control method includes: acquiring the outer ring temperature of the air conditioner, the condenser pipe temperature and the duration of the pipe temperature, wherein the duration of the pipe temperature is the duration of the condenser pipe temperature; determining that the operating state of the air conditioner is a defrosting state when the outer ring temperature of the air conditioner is less than a first outer ring temperature, the condenser pipe temperature of the air conditioner is less than or equal to a first preset pipe temperature, and the duration of the pipe temperature is greater than a target duration; and, when the operating state of the air conditioner is the defrosting state, opening at least the intake bypass valve and the exhaust bypass valve to control the flow of refrigerant to control the defrosting of the air conditioner.

[0008] Optionally, the indoor unit heat exchanger further includes a first electronic expansion valve, a second electronic expansion valve, and a third electronic expansion valve. When the air conditioner is in the defrosting state, at least the suction bypass valve and the exhaust bypass valve are opened to control the flow of refrigerant and thus control the defrosting of the air conditioner. This includes: when the air conditioner is in the defrosting state, opening the suction bypass valve, the exhaust bypass valve, and the second electronic expansion valve, and closing the first electronic expansion valve and the third electronic expansion valve, so that the first portion of refrigerant discharged by the compressor flows sequentially through the... The outdoor unit heat exchanger and the first evaporator are connected to the refrigerant junction to defrost the outdoor unit heat exchanger. After defrosting the outdoor unit heat exchanger, the first portion of refrigerant is evaporated through the first evaporator. The second portion of refrigerant discharged from the compressor flows through the exhaust bypass valve to the second evaporator for heat exchange and evaporation, so that the air conditioner continues to heat while the outdoor unit heat exchanger is defrosting. The refrigerant flows through the suction bypass valve to the refrigerant junction. The sum of the first portion of refrigerant and the second portion of refrigerant is all the refrigerant discharged from the compressor.

[0009] Optionally, determining the air conditioner's operating state as a defrosting state when the outer ring temperature of the air conditioner is less than a first outer ring temperature, the condenser pipe temperature of the air conditioner is less than or equal to a first preset pipe temperature, and the duration of the pipe temperature is greater than a target duration includes: determining the air conditioner's operating state as a defrosting state when the outer ring temperature of the air conditioner is less than the first preset temperature and greater than or equal to a second preset temperature, and the condenser pipe temperature of the air conditioner is less than or equal to the first preset pipe temperature, and the duration of the pipe temperature is greater than a first preset duration; and determining the air conditioner's operating state as a defrosting state when the outer ring temperature of the air conditioner is less than the second preset temperature and greater than or equal to a third preset temperature. When the air conditioner operates at a preset temperature and the condenser pipe temperature is less than or equal to the second preset pipe temperature and the duration of the pipe temperature is greater than or equal to the second preset duration, the air conditioner is determined to be in the defrosting state, where the second preset pipe temperature is less than the first preset pipe temperature. When the air conditioner's outer ring temperature is less than the third preset temperature and greater than or equal to the fourth preset temperature, and the air conditioner's condenser pipe temperature is less than or equal to the third preset pipe temperature and the duration of the pipe temperature is greater than or equal to the third preset duration, the air conditioner is determined to be in the defrosting state, where the third preset pipe temperature is less than the second preset pipe temperature.

[0010] Optionally, determining the air conditioner's operating state as a defrosting state when the outer ring temperature of the air conditioner is less than a first outer ring temperature, the condenser pipe temperature of the air conditioner is less than or equal to a first preset pipe temperature, and the duration of the pipe temperature difference is greater than a target duration includes: determining the air conditioner's operating state as a defrosting state when the outer ring temperature of the air conditioner is less than or equal to a fourth preset temperature, the target temperature difference is less than or equal to the target temperature difference, and the duration of the temperature difference is greater than or equal to the fourth preset duration, wherein the target temperature difference is the difference between the condenser pipe temperature of the air conditioner and the outer ring temperature of the air conditioner, and the duration of the temperature difference is the duration of the target temperature difference.

[0011] Optionally, the indoor unit heat exchanger further includes a first electronic expansion valve, a second electronic expansion valve, and a third electronic expansion valve. After obtaining the outer ring temperature of the air conditioner, the condenser pipe temperature of the air conditioner, and the duration of the pipe temperature, the method further includes: when the air conditioner is in cooling mode and heating mode, closing the suction bypass valve and the exhaust bypass valve, and opening the first electronic expansion valve, the second electronic expansion valve, and the third electronic expansion valve.

[0012] According to another aspect of this application, a computer-readable storage medium is provided, the computer-readable storage medium including a stored program, wherein, when the program is executed, it controls the device where the computer-readable storage medium is located to perform any of the control methods of the air conditioner described above.

[0013] According to the technical solution of this application, the above-mentioned air conditioner includes: an outdoor unit heat exchanger; an indoor unit heat exchanger including a first evaporator, a second evaporator, an exhaust bypass valve, an intake bypass valve, and a compressor, wherein the outdoor unit heat exchanger is connected to the compressor, the first evaporator, and the second evaporator via pipelines, the exhaust bypass valve is installed on the first pipeline connecting the compressor and the second evaporator, and the intake bypass valve is installed on the second pipeline connecting the compressor and the second evaporator; and a controller, used to open the exhaust bypass valve and the intake bypass valve when the air conditioner is in defrosting mode, so that the first part of the refrigerant discharged by the compressor flows sequentially through the outdoor unit heat exchanger and the first evaporator to the refrigerant confluence point to control the defrosting of the air conditioner, and to allow the second part of the refrigerant discharged by the compressor to flow through the exhaust bypass valve to the second evaporator and through the intake bypass valve to the refrigerant confluence point to control the heating of the air conditioner, wherein the sum of the first part of the refrigerant and the second part of the refrigerant is the total refrigerant discharged by the compressor. This air conditioner, by setting up intake and exhaust bypass valves and two evaporator modules, allows the refrigerant to be divided into two paths in defrost mode, which are used for defrosting and heating respectively. This enables uninterrupted defrosting and continuous heating during defrosting, solving the problem that existing household air conditioners cannot provide continuous heating during defrosting. Attached Figure Description

[0014] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments and descriptions of this application are used to explain this application and do not constitute an undue limitation of this application. In the drawings:

[0015] Figure 1 A schematic diagram of an air conditioner provided in an embodiment according to this application is shown;

[0016] Figure 2 A schematic diagram of the specific structure of an indoor unit heat exchanger of an air conditioner provided in an embodiment of this application is shown;

[0017] Figure 3 A side view of the air duct and evaporator of an air conditioner provided in an embodiment of this application is shown;

[0018] Figure 4 A schematic diagram of an air conditioner in defrosting mode according to an embodiment of this application is shown;

[0019] Figure 5 A schematic diagram of an air conditioner in cooling mode according to an embodiment of this application is shown;

[0020] Figure 6 A schematic diagram of an air conditioner in heating mode according to an embodiment of this application is shown;

[0021] Figure 7 A schematic flowchart of a control method for an air conditioner according to an embodiment of this application is shown;

[0022] Figure 8 A structural block diagram of a controller provided according to an embodiment of this application is shown.

[0023] The above figures include the following reference numerals:

[0024] 01. Outdoor unit heat exchanger; 02. Indoor unit heat exchanger; 021. Exhaust bypass valve; 022. Suction bypass valve; 023. First evaporator; 024. Second evaporator; 025. Compressor; 026. First electronic expansion valve; 027. Second electronic expansion valve; 028. Third electronic expansion valve; 031. Liquid receiver; 032. Four-way valve; 033. Up fan; 034. Down fan; 035. First temperature sensor; 036. Second temperature sensor; 037. First distributor; 038. Second distributor. Detailed Implementation

[0025] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0026] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0027] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for the embodiments of this application described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0028] As described in the background section, during the defrosting period of existing household air conditioners, the indoor unit is in a stopped state and cannot continuously provide heating to the room. When the outdoor humidity is high, the air conditioner will enter the defrosting period more frequently, affecting user comfort and reducing heating effect. In order to solve the problem that existing household air conditioners cannot continuously provide heating during the defrosting period, the embodiments of this application provide an air conditioner, an air conditioner control method, and a computer-readable storage medium.

[0029] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

[0030] This embodiment provides an air conditioner, such as Figure 1As shown, the system includes: an outdoor unit heat exchanger 01; an indoor unit heat exchanger 02, including a first evaporator 023, a second evaporator 024, an exhaust bypass valve 021, an intake bypass valve 022, and a compressor 025. The outdoor unit heat exchanger 01 is connected to the compressor 025, the first evaporator 023, and the second evaporator 024 via pipelines. The exhaust bypass valve 021 is installed on a first pipeline connecting the compressor 025 and the second evaporator 024, and the intake bypass valve 022 is installed on a second pipeline connecting the compressor 025 and the second evaporator 024; and a controller for controlling the operation of the air conditioner. When the air conditioner is in defrosting mode, the exhaust bypass valve 021 and the suction bypass valve 022 are opened, so that the first part of the refrigerant discharged by the compressor 025 flows sequentially through the outdoor unit heat exchanger 01 and the first evaporator 023 to the refrigerant junction A, thereby controlling the defrosting of the air conditioner. The second part of the refrigerant discharged by the compressor 025 flows through the exhaust bypass valve 021 to the second evaporator 024 and through the suction bypass valve 022 to the refrigerant junction A, thereby controlling the heating of the air conditioner. The sum of the first part of the refrigerant and the second part of the refrigerant is the total refrigerant discharged by the compressor 025.

[0031] The air conditioner described in this application includes: an outdoor unit heat exchanger; an indoor unit heat exchanger including a first evaporator, a second evaporator, an exhaust bypass valve, an intake bypass valve, and a compressor, wherein the outdoor unit heat exchanger is connected to the compressor, the first evaporator, and the second evaporator via pipelines, the exhaust bypass valve is installed on a first pipeline connecting the compressor and the second evaporator, and the intake bypass valve is installed on a second pipeline connecting the compressor and the second evaporator; and a controller, used to open the exhaust bypass valve and the intake bypass valve when the air conditioner is in defrosting mode, so that a first portion of refrigerant discharged from the compressor flows sequentially through the outdoor unit heat exchanger and the first evaporator to the refrigerant confluence point to control the defrosting of the air conditioner, and to allow a second portion of refrigerant discharged from the compressor to flow through the exhaust bypass valve to the second evaporator and through the intake bypass valve to the refrigerant confluence point to control the heating of the air conditioner, wherein the sum of the first portion of refrigerant and the second portion of refrigerant is all the refrigerant discharged from the compressor. This air conditioner, by setting up intake and exhaust bypass valves and two evaporator modules, allows the refrigerant to be divided into two paths in defrost mode, which are used for defrosting and heating respectively. This enables uninterrupted defrosting and continuous heating during defrosting, solving the problem that existing household air conditioners cannot provide continuous heating during defrosting.

[0032] in, Figure 2 Here is a detailed structural diagram of the indoor unit heat exchanger of the aforementioned air conditioner, as shown below. Figure 2As shown, the first evaporator 023 and the second evaporator 024 are two evaporator modules housed in the same cavity. Their purpose is to allow the first evaporator 023 to perform evaporative heat exchange on the first portion of refrigerant used for defrosting during the air conditioner's defrosting process, and the second evaporator 024 to perform evaporative heat exchange on the second portion of refrigerant used for heating. The specific installation positions of the exhaust bypass valve 021 and the suction bypass valve 022 are as follows... Figure 2 As shown. Additionally, to achieve two-way refrigerant operation during defrosting in the air conditioner, as... Figure 2 As shown, the indoor unit heat exchanger of the aforementioned air conditioner also includes a first electronic expansion valve 026, a second electronic expansion valve 027, and a third electronic expansion valve 028. The specific installation positions of the three electronic expansion valves are as follows: Figure 2 As shown, the refrigerant flow direction is controlled by opening or closing the exhaust bypass valve 021, the intake bypass valve 022, the first electronic expansion valve 026, the second electronic expansion valve 027, and the third electronic expansion valve 028. Figure 2 The first temperature sensor 035 is used to detect the temperature of the first evaporator, and the second temperature sensor 036 is set up to detect the temperature of the second evaporator. For example... Figure 2 As shown, the indoor unit heat exchanger of the above-mentioned air conditioner also includes a first distributor 037 and a second distributor 038.

[0033] In addition, the indoor unit heat exchanger of the aforementioned air conditioner also includes an upper fan and a lower fan. Figure 3 Side view of the air duct and evaporator, as shown Figure 3 As shown, the upper fan 033 is installed above the lower fan 034.

[0034] In some embodiments, such as Figure 4 , Figure 5 and Figure 6 As shown, the indoor unit heat exchanger further includes: a liquid receiver 031 for storing the refrigerant, connected to the compressor 025 via a pipeline; a four-way valve 032 having a first port D, a second port C, a third port S, and a fourth port E, wherein the first port D of the four-way valve 032 is connected to the compressor 025 via a pipeline, the second port C of the four-way valve 032 is connected to the outdoor unit heat exchanger 01 via a pipeline, and the third port S of the four-way valve 032 is connected to the liquid receiver 031 via a pipeline, wherein, as... Figure 4 and Figure 5 As shown, when the air conditioner is in defrosting or cooling mode, the first port D and the second port C of the four-way valve 032 are connected, and the third port S and the fourth port E of the four-way valve 032 are connected; Figure 6As shown, when the air conditioner is in heating mode, the first port D and the fourth port E of the four-way valve 032 are connected, and the second port C and the third port S of the four-way valve 032 are connected; the first electronic expansion valve 026 is installed on the pipeline connecting the fourth port E of the four-way valve 032 and the second evaporator 024. When the air conditioner is in defrosting mode, the first electronic expansion valve 026 is in a closed state.

[0035] This allows for control of the refrigerant flow direction based on the different operating conditions of the air conditioner by controlling the four-way valve, ensuring that the air conditioner can both defrost and heat during defrosting.

[0036] In some instances, such as Figure 4 As shown, the indoor unit heat exchanger further includes: a second electronic expansion valve 027, installed on the pipeline between the outdoor unit heat exchanger 01 and the first evaporator 023, which is in the open state when the air conditioner is in the defrosting state; and a third electronic expansion valve 028, installed on the pipeline between the outdoor unit heat exchanger 01 and the second evaporator 024, which is in the closed state when the air conditioner is in the defrosting state.

[0037] When the air conditioner is in defrosting mode, the second electronic expansion valve is opened, allowing the first portion of refrigerant to flow sequentially through the four-way valve, the outdoor unit heat exchanger, the second electronic expansion valve, and the first evaporator, finally returning to the refrigerant confluence point to defrost the air conditioner and perform evaporative heat exchange through the first evaporator, preventing the lower fan from blowing cold air into the room. The first and second electronic expansion valves are then closed, allowing the second portion of refrigerant to flow sequentially through the exhaust bypass valve, the second evaporator, and the suction bypass valve, finally returning to the refrigerant confluence point to maintain continuous heating of the air conditioner.

[0038] This embodiment also provides a control method for an air conditioner, applied to a controller, for controlling any of the above-mentioned air conditioners. It should be noted that the steps shown in the flowchart in the accompanying drawings can be executed in a computer system such as a set of computer-executable instructions. Furthermore, although a logical order is shown in the flowchart, in some cases, the steps shown or described may be executed in a different order than that shown here.

[0039] Figure 7 This is a flowchart of an air conditioner control method according to an embodiment of this application. Figure 7 As shown, the method includes the following steps:

[0040] Step S201: Obtain the outer ring temperature of the air conditioner, the condenser tube temperature of the air conditioner, and the duration of the tube temperature, wherein the duration of the tube temperature is the duration of the condenser tube temperature of the air conditioner.

[0041] Specifically, the risk of frost formation and the need for defrosting are determined based on the air conditioner's ambient temperature, condenser pipe temperature, and the duration of the condenser pipe temperature. If both the ambient temperature and the condenser pipe temperature are high, it can be determined that the air conditioner does not have a risk of frost formation, meaning there is no need for defrosting.

[0042] After step S201, the method further includes the following steps: when the air conditioner is in cooling or heating mode, the intake bypass valve and the exhaust bypass valve are closed, and the first electronic expansion valve, the second electronic expansion valve, and the third electronic expansion valve are opened.

[0043] Specifically, by controlling the intake bypass valve, the exhaust bypass valve, the first electronic expansion valve, the second electronic expansion valve, and the third electronic expansion valve, the flow direction of the refrigerant in the air conditioner can be controlled to achieve the corresponding function (i.e., heating or cooling).

[0044] like Figure 5 As shown, when the air conditioner is started and the cooling (or dehumidification) mode is set via remote control, the suction and exhaust bypass valves close, and the refrigerant circulation flows as follows. Figure 5 As shown, the high-temperature, high-pressure refrigerant discharged from the compressor 025 enters the outdoor unit heat exchanger 01 and undergoes forced heat exchange by the outdoor fan. Then, it enters the second electronic expansion valve 027 and the third electronic expansion valve 028 for throttling. The throttled low-temperature, low-pressure refrigerant then enters the first evaporator 023 and the second evaporator 024 respectively, and cools the room by the indoor fan. At this time, the first electronic expansion valve 026 is fully open. After heat exchange by the first evaporator 023 and the second evaporator 024, the refrigerant enters the suction port of the compressor 025 in a gaseous state, completing the refrigeration cycle.

[0045] like Figure 6 As shown, when the air conditioner is turned on and the heating mode is set via remote control, the refrigerant circulation direction is as follows: Figure 6 As shown, 30 seconds after compressor 025 starts, four-way valve 032 completes the reversal. At this time, the high-temperature and high-pressure refrigerant discharged by compressor 025 enters the indoor heat exchanger through the fourth port E of four-way valve 032 and undergoes forced heat exchange by the indoor fan, transferring heat to the indoor side. At this time, the first electronic expansion valve 026 is in the fully open state. Then, it is throttled and depressurized through the second electronic expansion valve 027 and the third electronic expansion valve 028 respectively, and then enters the outdoor unit heat exchanger 01 for heat exchange. It enters the suction end of compressor 025 through the second port C of four-way valve 032, completing the heating cycle.

[0046] Step S202: When the outer ring temperature of the air conditioner is less than the first outer ring temperature, the condenser pipe temperature of the air conditioner is less than or equal to the first preset pipe temperature, and the duration of the pipe temperature is greater than the target duration, the working state of the air conditioner is determined to be the defrosting state.

[0047] Specifically, the operating status of an air conditioner can be accurately determined based on its external ambient temperature, condenser pipe temperature, and the duration of the condenser pipe temperature. This allows for accurate assessment of whether the air conditioner is at risk of frost formation and whether defrosting is required.

[0048] In addition, during defrosting, the compressor frequency will be appropriately increased to support the flow of two refrigerants.

[0049] The specific implementation steps of step S202 are as follows:

[0050] Step S301: When the outer ring temperature of the air conditioner is less than the first preset temperature and greater than or equal to the second preset temperature, and the condenser pipe temperature of the air conditioner is less than or equal to the first preset pipe temperature and the duration of the pipe temperature is greater than the first preset duration, the working state of the air conditioner is determined to be the defrosting state.

[0051] Step S302: When the outer ring temperature of the air conditioner is less than the second preset temperature and greater than or equal to the third preset temperature, and the condenser pipe temperature of the air conditioner is less than or equal to the second preset pipe temperature and the duration of the pipe temperature is greater than or equal to the second preset duration, the working state of the air conditioner is determined to be the defrosting state, and the second preset pipe temperature is less than the first preset pipe temperature.

[0052] Step S303: When the outer ring temperature of the air conditioner is less than the third preset temperature and greater than or equal to the fourth preset temperature, and the condenser pipe temperature of the air conditioner is less than or equal to the third preset pipe temperature and the duration of the pipe temperature is greater than or equal to the third preset duration, the working state of the air conditioner is determined to be the defrosting state, and the third preset pipe temperature is less than the second preset pipe temperature.

[0053] Specifically, based on different outer ring temperatures, the system determines whether the condenser pipe temperature is within the pipe temperature range corresponding to the current outer ring temperature, thus more accurately determining whether the air conditioner is in defrost mode. Furthermore, setting the duration of the pipe temperature measurement effectively avoids accuracy issues caused by pipe temperature fluctuations, preventing misjudgments due to these fluctuations.

[0054] The first preset temperature can be set to 7℃, the second preset temperature to 2℃, the third preset temperature to -2℃, and the fourth preset temperature to -5℃. The first preset tube temperature can be set to -4℃, the second preset tube temperature to -8℃, and the third preset tube temperature to -12℃. Furthermore, the first, second, and third preset durations can all be set to 30 seconds, or different values ​​within a reasonable range. It should be noted that the above values ​​can be adjusted according to actual application requirements.

[0055] The specific implementation steps of step S202 above further include the following steps: when the outer ring temperature of the air conditioner is less than or equal to the fourth preset temperature, the target temperature difference is less than or equal to the target temperature difference, and the duration of the temperature difference is greater than or equal to the fourth preset duration, the working state of the air conditioner is determined to be the defrosting state, wherein the target temperature difference is the difference between the condenser pipe temperature of the air conditioner and the outer ring temperature of the air conditioner, and the duration of the temperature difference is the duration of the target temperature difference.

[0056] Specifically, this allows for a more accurate determination of whether the air conditioner is in defrost mode. Furthermore, setting the duration of the temperature difference can effectively avoid accuracy issues caused by fluctuations in pipe temperature and / or external ambient temperature, thus preventing misjudgments due to these fluctuations.

[0057] The target temperature difference can be set to -8℃, and the fourth preset duration can be set to 60 seconds. It should be noted that these values ​​can be adjusted according to the actual application.

[0058] Additionally, in T 冷凝器管温 When the temperature is ≥10℃ and / or the defrosting time is ≥12min, the air conditioner will exit the defrosting state.

[0059] Step S203: When the air conditioner is in the defrosting state, at least the intake bypass valve and the exhaust bypass valve are opened to control the flow of refrigerant and thus control the defrosting of the air conditioner.

[0060] Specifically, the exhaust bypass valve can introduce the second part of high-temperature and high-pressure refrigerant discharged from the compressor into the second evaporator during defrosting (with the upper fan starting simultaneously) to heat the room. The suction bypass valve can introduce the second part of refrigerant that has completed heat exchange in the second evaporator into the suction end during defrosting, and finally return to the compressor.

[0061] The indoor unit heat exchanger further includes a first electronic expansion valve, a second electronic expansion valve, and a third electronic expansion valve. The specific implementation steps of step S203 are as follows: When the air conditioner is in the defrosting state, the suction bypass valve, the exhaust bypass valve, and the second electronic expansion valve are opened, and the first electronic expansion valve and the third electronic expansion valve are closed. This allows the first portion of refrigerant discharged from the compressor to flow sequentially through the outdoor unit heat exchanger and the first evaporator to the refrigerant confluence point for defrosting the outdoor unit heat exchanger. After defrosting the outdoor unit heat exchanger, the first portion of refrigerant undergoes heat exchange and evaporation through the first evaporator. The second portion of refrigerant discharged from the compressor flows through the exhaust bypass valve through the second evaporator for heat exchange and evaporation, ensuring that the air conditioner continues to heat while defrosting the outdoor unit heat exchanger. The refrigerant then flows through the suction bypass valve to the refrigerant confluence point. The sum of the first portion of refrigerant and the second portion of refrigerant is the total refrigerant discharged from the compressor.

[0062] Specifically, the first and second evaporators are supplied with refrigerant independently, allowing the compressor to defrost without stopping, while simultaneously providing indoor heating. The first, second, and third electronic expansion valves control refrigerant flow (they themselves have a throttling effect) and close refrigerant passages (changing the direction of refrigerant flow). By setting suction and discharge bypass valves and two evaporator modules, the refrigerant is divided into two paths in defrost mode, one for defrosting and the other for heating, achieving continuous defrosting without stopping and continuous heating during defrosting, thus solving the problem of existing household air conditioners being unable to provide continuous heating during defrosting.

[0063] Among them, such as Figure 4As shown, during defrosting, both the exhaust bypass valve 021 and the suction bypass valve 022 are open, while the first electronic expansion valve 026 and the third electronic expansion valve 028 are closed. The high-temperature, high-pressure refrigerant discharged from the compressor 025 flows in two paths: the first part of the refrigerant enters the outdoor unit heat exchanger 01 through the first port D and the second port C of the four-way valve 032 for defrosting (the outdoor unit fan stops to prevent heat from being blown away and affecting defrosting efficiency); the second part of the refrigerant enters the second evaporator 024 through the exhaust bypass valve 021, while the upper fan remains running, continuously supplying heat to the room. After the second part of the refrigerant completes heat exchange in the second evaporator 024, it is throttled by the suction bypass valve 022 and returns to the refrigerant confluence point A; at the same time, after the first part of the refrigerant completes defrosting in the outdoor unit heat exchanger 01, it is throttled by the second electronic expansion valve 027 and then enters the first evaporator 023 for evaporative heat exchange. To prevent the lower fan from blowing cold air into the room, the lower fan stops during defrosting. The first part of the low-temperature, low-pressure refrigerant mixes with the second part of the refrigerant through the fourth port E and the third port S of the four-way valve 032 and is finally drawn into the compressor 025, circulating repeatedly until it exits the defrosting process.

[0064] like Figure 2 As shown, during defrosting, the second evaporator 024 located at the upper end continuously transfers heat to the room, playing its role in condensing and releasing heat; the first evaporator 023 located at the lower end performs the role of evaporating and absorbing heat. In order to avoid the condensate from the first evaporator 023 from sliding down and affecting the heat exchange, the first evaporator 023 is arranged at the lower end.

[0065] The air conditioner control method described in this application is applied to a controller for controlling any type of air conditioner. First, it acquires the air conditioner's outer ring temperature, condenser pipe temperature, and pipe temperature duration, where the pipe temperature duration is the same as the condenser pipe temperature duration. Then, if the air conditioner's outer ring temperature is lower than a first outer ring temperature, the condenser pipe temperature is lower than or equal to a first preset pipe temperature, and the pipe temperature duration is greater than a target duration, the air conditioner's operating state is determined to be defrosting mode. Finally, while the air conditioner is in defrosting mode, at least the suction bypass valve and the exhaust bypass valve are opened to control the refrigerant flow and thus control the defrosting process. This method, by setting suction and exhaust bypass valves and two evaporator modules, allows the refrigerant to be divided into two paths during defrosting mode, one for defrosting and the other for heating, achieving uninterrupted defrosting and continuous heating during defrosting, thus solving the problem of existing household air conditioners being unable to continuously heat during defrosting.

[0066] It should be noted that the steps shown in the flowchart in the accompanying drawings can be executed in a computer system such as a set of computer-executable instructions, and although a logical order is shown in the flowchart, in some cases the steps shown or described may be executed in a different order than that shown here.

[0067] This application also provides a controller. It should be noted that the controller in this application can be used to execute the control method for an air conditioner provided in this application. This controller is used to implement the above embodiments and preferred embodiments; details already described will not be repeated. As used below, the term "module" can refer to a combination of software and / or hardware that implements a predetermined function. Although the controller described in the following embodiments is preferably implemented in software, hardware implementation, or a combination of software and hardware, is also possible and contemplated.

[0068] The controller provided in the embodiments of this application will be described below.

[0069] Figure 8 This is a schematic diagram of a controller according to an embodiment of this application. Figure 8 As shown, the controller includes an acquisition unit 10, a determination unit 20, and a control unit 30. The acquisition unit 10 is used to acquire the outer ring temperature of the air conditioner, the condenser pipe temperature of the air conditioner, and the duration of the pipe temperature, wherein the duration of the pipe temperature is the duration of the condenser pipe temperature of the air conditioner. The determination unit 20 is used to determine that the working state of the air conditioner is defrosting state when the outer ring temperature of the air conditioner is less than a first outer ring temperature, the condenser pipe temperature of the air conditioner is less than or equal to a first preset pipe temperature, and the duration of the pipe temperature is greater than a target duration. The control unit 30 is used to open at least the intake bypass valve and the exhaust bypass valve when the working state of the air conditioner is defrosting state, so as to control the flow of refrigerant and control the defrosting of the air conditioner.

[0070] The controller described in this application includes an acquisition unit, a determination unit, and a control unit. The acquisition unit acquires the outer ring temperature of the air conditioner, the condenser pipe temperature, and the duration of the pipe temperature, with the pipe temperature duration being the same as the duration of the condenser pipe temperature. The determination unit determines that the air conditioner is in defrost mode when the outer ring temperature is lower than a first outer ring temperature, the condenser pipe temperature is lower than or equal to a first preset pipe temperature, and the duration of the pipe temperature exceeds a target duration. The control unit, when the air conditioner is in defrost mode, opens at least the suction bypass valve and the exhaust bypass valve to control the refrigerant flow and thus control the defrosting process. This method, by setting suction and exhaust bypass valves and two evaporator modules, allows the refrigerant to be divided into two paths in defrost mode, performing defrosting and heating respectively, achieving uninterrupted defrosting and continuous heating during defrosting, thus solving the problem that existing household air conditioners cannot continuously heat during defrosting.

[0071] For example, the indoor unit heat exchanger further includes a first electronic expansion valve, a second electronic expansion valve, and a third electronic expansion valve. The control unit includes a first control module, which is used to open the suction bypass valve, the exhaust bypass valve, and the second electronic expansion valve, and close the first electronic expansion valve and the third electronic expansion valve when the air conditioner is in the defrosting state. This allows the first portion of refrigerant discharged by the compressor to flow sequentially through the outdoor unit heat exchanger and the first evaporator to the refrigerant confluence point to defrost the outdoor unit heat exchanger. After defrosting the outdoor unit heat exchanger, the first portion of refrigerant undergoes heat exchange and evaporation through the first evaporator. The second portion of refrigerant discharged by the compressor flows through the exhaust bypass valve through the second evaporator to undergo heat exchange and evaporation, thereby maintaining continuous heating of the air conditioner while defrosting the outdoor unit heat exchanger. The second portion of refrigerant flows through the suction bypass valve to the refrigerant confluence point. The sum of the first portion of refrigerant and the second portion of refrigerant is the total refrigerant discharged by the compressor.

[0072] In this embodiment, the determining unit includes a first determining module, a second determining module, and a third determining module. The first determining module is used to determine that the working state of the air conditioner is the defrosting state when the outer ring temperature of the air conditioner is less than the first preset temperature and greater than or equal to the second preset temperature, and the condenser pipe temperature of the air conditioner is less than or equal to the first preset pipe temperature and the duration of the pipe temperature is greater than the first preset duration. The second determining module is used to determine that the working state of the air conditioner is the defrosting state when the outer ring temperature of the air conditioner is less than the second preset temperature and greater than or equal to the third preset temperature, and the condenser pipe temperature of the air conditioner is less than or equal to the second preset pipe temperature and the duration of the pipe temperature is greater than or equal to the second preset duration, wherein the second preset pipe temperature is less than the first preset pipe temperature. The third determining module is used to determine that the working state of the air conditioner is the defrosting state when the outer ring temperature of the air conditioner is less than the third preset temperature and greater than or equal to the fourth preset temperature, and the condenser pipe temperature of the air conditioner is less than or equal to the third preset pipe temperature and the duration of the pipe temperature is greater than or equal to the third preset duration, wherein the third preset pipe temperature is less than the second preset pipe temperature.

[0073] An optional solution includes a fourth determining module, which is used to determine that the working state of the air conditioner is the defrosting state when the outer ring temperature of the air conditioner is less than or equal to a fourth preset temperature, the target temperature difference is less than or equal to the target temperature difference, and the duration of the temperature difference is greater than or equal to the fourth preset duration. The target temperature difference is the difference between the condenser pipe temperature of the air conditioner and the outer ring temperature of the air conditioner, and the duration of the temperature difference is the duration of the target temperature difference.

[0074] As an optional solution, the indoor unit heat exchanger further includes a first electronic expansion valve, a second electronic expansion valve, and a third electronic expansion valve. The controller further includes a second control module. The second control module is used to close the suction bypass valve and the exhaust bypass valve and open the first electronic expansion valve, the second electronic expansion valve, and the third electronic expansion valve when the air conditioner is in cooling mode or heating mode, after acquiring the outer ring temperature of the air conditioner, the condenser tube temperature of the air conditioner, and the tube temperature duration.

[0075] The aforementioned controller includes a processor and a memory. The aforementioned acquisition units, etc., are all stored as program units in the memory, and the processor executes these program units stored in the memory to achieve the corresponding functions. All of the aforementioned modules reside in the same processor; alternatively, the aforementioned modules may be located in different processors in any combination.

[0076] The processor contains a kernel, which retrieves the corresponding program units from memory. One or more kernels can be configured; adjusting kernel parameters can solve the problem of existing household air conditioners failing to provide continuous heating during defrosting.

[0077] The memory may include non-permanent memory in computer-readable media, such as random access memory (RAM) and / or non-volatile memory, such as read-only memory (ROM) or flash RAM, and the memory includes at least one memory chip.

[0078] This invention provides a computer-readable storage medium including a stored program, wherein, when the program is executed, it controls the device containing the computer-readable storage medium to perform the control method of the air conditioner.

[0079] Specifically, the control methods for air conditioners include:

[0080] Step S201: Obtain the outer ring temperature of the air conditioner, the condenser tube temperature of the air conditioner, and the duration of the tube temperature, wherein the duration of the tube temperature is the duration of the condenser tube temperature of the air conditioner.

[0081] Specifically, the risk of frost formation and the need for defrosting are determined based on the air conditioner's ambient temperature, condenser pipe temperature, and the duration of the condenser pipe temperature. If both the ambient temperature and the condenser pipe temperature are high, it can be determined that the air conditioner does not have a risk of frost formation, meaning there is no need for defrosting.

[0082] Step S202: When the outer ring temperature of the air conditioner is less than the first outer ring temperature, the condenser pipe temperature of the air conditioner is less than or equal to the first preset pipe temperature, and the duration of the pipe temperature is greater than the target duration, the working state of the air conditioner is determined to be the defrosting state.

[0083] Specifically, the operating status of an air conditioner can be accurately determined based on its external ambient temperature, condenser pipe temperature, and the duration of the condenser pipe temperature. This allows for accurate assessment of whether the air conditioner is at risk of frost formation and whether defrosting is required.

[0084] Step S203: When the air conditioner is in the defrosting state, at least the intake bypass valve and the exhaust bypass valve are opened to control the flow of refrigerant and thus control the defrosting of the air conditioner.

[0085] Specifically, the exhaust bypass valve can introduce the second part of high-temperature and high-pressure refrigerant discharged from the compressor into the second evaporator during defrosting (with the upper fan starting simultaneously) to heat the room. The suction bypass valve can introduce the second part of refrigerant that has completed heat exchange in the second evaporator into the suction end during defrosting, and finally return to the compressor.

[0086] Optionally, the indoor unit heat exchanger further includes a first electronic expansion valve, a second electronic expansion valve, and a third electronic expansion valve. When the air conditioner is in the defrosting state, at least the suction bypass valve and the exhaust bypass valve are opened to control the flow of refrigerant and thus control the defrosting of the air conditioner. This includes: when the air conditioner is in the defrosting state, opening the suction bypass valve, the exhaust bypass valve, and the second electronic expansion valve, and closing the first electronic expansion valve and the third electronic expansion valve, so that the first portion of refrigerant discharged from the compressor flows sequentially through the above-mentioned components. The outdoor unit heat exchanger and the first evaporator are connected to the refrigerant junction to defrost the outdoor unit heat exchanger. After defrosting the outdoor unit heat exchanger, the first portion of refrigerant is evaporated through the first evaporator. The second portion of refrigerant discharged from the compressor flows through the exhaust bypass valve to the second evaporator for heat exchange and evaporation, so that the air conditioner continues to heat while the outdoor unit heat exchanger is defrosting. The refrigerant flows through the suction bypass valve to the refrigerant junction. The sum of the first portion of refrigerant and the second portion of refrigerant is all the refrigerant discharged from the compressor.

[0087] Optionally, determining the air conditioner's operating state as a defrosting state when the outer ring temperature of the air conditioner is lower than the first outer ring temperature, the condenser pipe temperature of the air conditioner is lower than or equal to the first preset pipe temperature, and the duration of the pipe temperature is greater than the target duration includes: determining the air conditioner's operating state as a defrosting state when the outer ring temperature of the air conditioner is lower than the first preset temperature and greater than or equal to the second preset temperature, and the condenser pipe temperature of the air conditioner is lower than or equal to the first preset pipe temperature, and the duration of the pipe temperature is greater than the first preset duration; and determining the air conditioner's operating state as a defrosting state when the outer ring temperature of the air conditioner is lower than the second preset temperature and greater than or equal to the third preset temperature. When the air conditioner's condenser pipe temperature is less than or equal to the second preset pipe temperature and the duration of the pipe temperature is greater than or equal to the second preset duration, the air conditioner's operating state is determined to be the defrosting state, and the second preset pipe temperature is less than the first preset pipe temperature; when the air conditioner's outer ring temperature is less than the third preset temperature and greater than or equal to the fourth preset temperature, and the air conditioner's condenser pipe temperature is less than or equal to the third preset pipe temperature and the duration of the pipe temperature is greater than or equal to the third preset duration, the air conditioner's operating state is determined to be the defrosting state, and the third preset pipe temperature is less than the second preset pipe temperature.

[0088] Optionally, when the outer ring temperature of the air conditioner is less than the first outer ring temperature, the condenser pipe temperature of the air conditioner is less than or equal to the first preset pipe temperature, and the duration of the pipe temperature difference is greater than the target duration, the air conditioner is determined to be in a defrosting state. This includes: when the outer ring temperature of the air conditioner is less than or equal to the fourth preset temperature, the target temperature difference is less than or equal to the target temperature difference, and the duration of the temperature difference is greater than or equal to the fourth preset duration, the air conditioner is determined to be in a defrosting state. Here, the target temperature difference is the difference between the condenser pipe temperature and the outer ring temperature of the air conditioner, and the duration of the temperature difference is the duration of the target temperature difference.

[0089] Optionally, the indoor unit heat exchanger further includes a first electronic expansion valve, a second electronic expansion valve, and a third electronic expansion valve. After obtaining the outer ring temperature of the air conditioner, the condenser tube temperature of the air conditioner, and the duration of the tube temperature, the method further includes: when the air conditioner is in cooling mode or heating mode, closing the suction bypass valve and the exhaust bypass valve, and opening the first electronic expansion valve, the second electronic expansion valve, and the third electronic expansion valve.

[0090] This invention provides a processor for running a program, wherein the program executes the control method of the air conditioner.

[0091] Specifically, the control methods for air conditioners include:

[0092] Step S201: Obtain the outer ring temperature of the air conditioner, the condenser tube temperature of the air conditioner, and the duration of the tube temperature, wherein the duration of the tube temperature is the duration of the condenser tube temperature of the air conditioner.

[0093] Specifically, the risk of frost formation and the need for defrosting are determined based on the air conditioner's ambient temperature, condenser pipe temperature, and the duration of the condenser pipe temperature. If both the ambient temperature and the condenser pipe temperature are high, it can be determined that the air conditioner does not have a risk of frost formation, meaning there is no need for defrosting.

[0094] Step S202: When the outer ring temperature of the air conditioner is less than the first outer ring temperature, the condenser pipe temperature of the air conditioner is less than or equal to the first preset pipe temperature, and the duration of the pipe temperature is greater than the target duration, the working state of the air conditioner is determined to be the defrosting state.

[0095] Specifically, the operating status of an air conditioner can be accurately determined based on its external ambient temperature, condenser pipe temperature, and the duration of the condenser pipe temperature. This allows for accurate assessment of whether the air conditioner is at risk of frost formation and whether defrosting is required.

[0096] Step S203: When the air conditioner is in the defrosting state, at least the intake bypass valve and the exhaust bypass valve are opened to control the flow of refrigerant and thus control the defrosting of the air conditioner.

[0097] Specifically, the exhaust bypass valve can introduce the second part of high-temperature and high-pressure refrigerant discharged from the compressor into the second evaporator during defrosting (with the upper fan starting simultaneously) to heat the room. The suction bypass valve can introduce the second part of refrigerant that has completed heat exchange in the second evaporator into the suction end during defrosting, and finally return to the compressor.

[0098] Optionally, the indoor unit heat exchanger further includes a first electronic expansion valve, a second electronic expansion valve, and a third electronic expansion valve. When the air conditioner is in the defrosting state, at least the suction bypass valve and the exhaust bypass valve are opened to control the flow of refrigerant and thus control the defrosting of the air conditioner. This includes: when the air conditioner is in the defrosting state, opening the suction bypass valve, the exhaust bypass valve, and the second electronic expansion valve, and closing the first electronic expansion valve and the third electronic expansion valve, so that the first portion of refrigerant discharged from the compressor flows sequentially through the above-mentioned components. The outdoor unit heat exchanger and the first evaporator are connected to the refrigerant junction to defrost the outdoor unit heat exchanger. After defrosting the outdoor unit heat exchanger, the first portion of refrigerant is evaporated through the first evaporator. The second portion of refrigerant discharged from the compressor flows through the exhaust bypass valve to the second evaporator for heat exchange and evaporation, so that the air conditioner continues to heat while the outdoor unit heat exchanger is defrosting. The refrigerant flows through the suction bypass valve to the refrigerant junction. The sum of the first portion of refrigerant and the second portion of refrigerant is all the refrigerant discharged from the compressor.

[0099] Optionally, determining the air conditioner's operating state as a defrosting state when the outer ring temperature of the air conditioner is lower than the first outer ring temperature, the condenser pipe temperature of the air conditioner is lower than or equal to the first preset pipe temperature, and the duration of the pipe temperature is greater than the target duration includes: determining the air conditioner's operating state as a defrosting state when the outer ring temperature of the air conditioner is lower than the first preset temperature and greater than or equal to the second preset temperature, and the condenser pipe temperature of the air conditioner is lower than or equal to the first preset pipe temperature, and the duration of the pipe temperature is greater than the first preset duration; and determining the air conditioner's operating state as a defrosting state when the outer ring temperature of the air conditioner is lower than the second preset temperature and greater than or equal to the third preset temperature. When the air conditioner's condenser pipe temperature is less than or equal to the second preset pipe temperature and the duration of the pipe temperature is greater than or equal to the second preset duration, the air conditioner's operating state is determined to be the defrosting state, and the second preset pipe temperature is less than the first preset pipe temperature; when the air conditioner's outer ring temperature is less than the third preset temperature and greater than or equal to the fourth preset temperature, and the air conditioner's condenser pipe temperature is less than or equal to the third preset pipe temperature and the duration of the pipe temperature is greater than or equal to the third preset duration, the air conditioner's operating state is determined to be the defrosting state, and the third preset pipe temperature is less than the second preset pipe temperature.

[0100] Optionally, when the outer ring temperature of the air conditioner is less than the first outer ring temperature, the condenser pipe temperature of the air conditioner is less than or equal to the first preset pipe temperature, and the duration of the pipe temperature difference is greater than the target duration, the air conditioner is determined to be in a defrosting state. This includes: when the outer ring temperature of the air conditioner is less than or equal to the fourth preset temperature, the target temperature difference is less than or equal to the target temperature difference, and the duration of the temperature difference is greater than or equal to the fourth preset duration, the air conditioner is determined to be in a defrosting state. Here, the target temperature difference is the difference between the condenser pipe temperature and the outer ring temperature of the air conditioner, and the duration of the temperature difference is the duration of the target temperature difference.

[0101] Optionally, the indoor unit heat exchanger further includes a first electronic expansion valve, a second electronic expansion valve, and a third electronic expansion valve. After obtaining the outer ring temperature of the air conditioner, the condenser tube temperature of the air conditioner, and the duration of the tube temperature, the method further includes: when the air conditioner is in cooling mode or heating mode, closing the suction bypass valve and the exhaust bypass valve, and opening the first electronic expansion valve, the second electronic expansion valve, and the third electronic expansion valve.

[0102] This invention provides a device including a processor, a memory, and a program stored in the memory and executable on the processor. When the processor executes the program, it performs at least the following steps:

[0103] Step S201: Obtain the outer ring temperature of the air conditioner, the condenser tube temperature of the air conditioner, and the duration of the tube temperature, wherein the duration of the tube temperature is the duration of the condenser tube temperature of the air conditioner.

[0104] Step S202: When the outer ring temperature of the air conditioner is less than the first outer ring temperature, the condenser pipe temperature of the air conditioner is less than or equal to the first preset pipe temperature, and the duration of the pipe temperature is greater than the target duration, the working state of the air conditioner is determined to be the defrosting state.

[0105] Step S203: When the air conditioner is in the defrosting state, at least the intake bypass valve and the exhaust bypass valve are opened to control the flow of refrigerant and thus control the defrosting of the air conditioner.

[0106] The devices mentioned in this article can be servers, PCs, tablets, mobile phones, etc.

[0107] Optionally, the indoor unit heat exchanger further includes a first electronic expansion valve, a second electronic expansion valve, and a third electronic expansion valve. When the air conditioner is in the defrosting state, at least the suction bypass valve and the exhaust bypass valve are opened to control the flow of refrigerant and thus control the defrosting of the air conditioner. This includes: when the air conditioner is in the defrosting state, opening the suction bypass valve, the exhaust bypass valve, and the second electronic expansion valve, and closing the first electronic expansion valve and the third electronic expansion valve, so that the first portion of refrigerant discharged from the compressor flows sequentially through the above-mentioned components. The outdoor unit heat exchanger and the first evaporator are connected to the refrigerant junction to defrost the outdoor unit heat exchanger. After defrosting the outdoor unit heat exchanger, the first portion of refrigerant is evaporated through the first evaporator. The second portion of refrigerant discharged from the compressor flows through the exhaust bypass valve to the second evaporator for heat exchange and evaporation, so that the air conditioner continues to heat while the outdoor unit heat exchanger is defrosting. The refrigerant flows through the suction bypass valve to the refrigerant junction. The sum of the first portion of refrigerant and the second portion of refrigerant is all the refrigerant discharged from the compressor.

[0108] Optionally, determining the air conditioner's operating state as a defrosting state when the outer ring temperature of the air conditioner is lower than the first outer ring temperature, the condenser pipe temperature of the air conditioner is lower than or equal to the first preset pipe temperature, and the duration of the pipe temperature is greater than the target duration includes: determining the air conditioner's operating state as a defrosting state when the outer ring temperature of the air conditioner is lower than the first preset temperature and greater than or equal to the second preset temperature, and the condenser pipe temperature of the air conditioner is lower than or equal to the first preset pipe temperature, and the duration of the pipe temperature is greater than the first preset duration; and determining the air conditioner's operating state as a defrosting state when the outer ring temperature of the air conditioner is lower than the second preset temperature and greater than or equal to the third preset temperature. When the air conditioner's condenser pipe temperature is less than or equal to the second preset pipe temperature and the duration of the pipe temperature is greater than or equal to the second preset duration, the air conditioner's operating state is determined to be the defrosting state, and the second preset pipe temperature is less than the first preset pipe temperature; when the air conditioner's outer ring temperature is less than the third preset temperature and greater than or equal to the fourth preset temperature, and the air conditioner's condenser pipe temperature is less than or equal to the third preset pipe temperature and the duration of the pipe temperature is greater than or equal to the third preset duration, the air conditioner's operating state is determined to be the defrosting state, and the third preset pipe temperature is less than the second preset pipe temperature.

[0109] Optionally, when the outer ring temperature of the air conditioner is less than the first outer ring temperature, the condenser pipe temperature of the air conditioner is less than or equal to the first preset pipe temperature, and the duration of the pipe temperature difference is greater than the target duration, the air conditioner is determined to be in a defrosting state. This includes: when the outer ring temperature of the air conditioner is less than or equal to the fourth preset temperature, the target temperature difference is less than or equal to the target temperature difference, and the duration of the temperature difference is greater than or equal to the fourth preset duration, the air conditioner is determined to be in a defrosting state. Here, the target temperature difference is the difference between the condenser pipe temperature and the outer ring temperature of the air conditioner, and the duration of the temperature difference is the duration of the target temperature difference.

[0110] Optionally, the indoor unit heat exchanger further includes a first electronic expansion valve, a second electronic expansion valve, and a third electronic expansion valve. After obtaining the outer ring temperature of the air conditioner, the condenser tube temperature of the air conditioner, and the duration of the tube temperature, the method further includes: when the air conditioner is in cooling mode or heating mode, closing the suction bypass valve and the exhaust bypass valve, and opening the first electronic expansion valve, the second electronic expansion valve, and the third electronic expansion valve.

[0111] This application also provides a computer program product, which, when executed on a data processing device, is suitable for executing an initialization program having at least the following method steps:

[0112] Step S201: Obtain the outer ring temperature of the air conditioner, the condenser tube temperature of the air conditioner, and the duration of the tube temperature, wherein the duration of the tube temperature is the duration of the condenser tube temperature of the air conditioner.

[0113] Step S202: When the outer ring temperature of the air conditioner is less than the first outer ring temperature, the condenser pipe temperature of the air conditioner is less than or equal to the first preset pipe temperature, and the duration of the pipe temperature is greater than the target duration, the working state of the air conditioner is determined to be the defrosting state.

[0114] Step S203: When the air conditioner is in the defrosting state, at least the intake bypass valve and the exhaust bypass valve are opened to control the flow of refrigerant and thus control the defrosting of the air conditioner.

[0115] Optionally, the indoor unit heat exchanger further includes a first electronic expansion valve, a second electronic expansion valve, and a third electronic expansion valve. When the air conditioner is in the defrosting state, at least the suction bypass valve and the exhaust bypass valve are opened to control the flow of refrigerant and thus control the defrosting of the air conditioner. This includes: when the air conditioner is in the defrosting state, opening the suction bypass valve, the exhaust bypass valve, and the second electronic expansion valve, and closing the first electronic expansion valve and the third electronic expansion valve, so that the first portion of refrigerant discharged from the compressor flows sequentially through the above-mentioned components. The outdoor unit heat exchanger and the first evaporator are connected to the refrigerant junction to defrost the outdoor unit heat exchanger. After defrosting the outdoor unit heat exchanger, the first portion of refrigerant is evaporated through the first evaporator. The second portion of refrigerant discharged from the compressor flows through the exhaust bypass valve to the second evaporator for heat exchange and evaporation, so that the air conditioner continues to heat while the outdoor unit heat exchanger is defrosting. The refrigerant flows through the suction bypass valve to the refrigerant junction. The sum of the first portion of refrigerant and the second portion of refrigerant is all the refrigerant discharged from the compressor.

[0116] Optionally, determining the air conditioner's operating state as a defrosting state when the outer ring temperature of the air conditioner is lower than the first outer ring temperature, the condenser pipe temperature of the air conditioner is lower than or equal to the first preset pipe temperature, and the duration of the pipe temperature is greater than the target duration includes: determining the air conditioner's operating state as a defrosting state when the outer ring temperature of the air conditioner is lower than the first preset temperature and greater than or equal to the second preset temperature, and the condenser pipe temperature of the air conditioner is lower than or equal to the first preset pipe temperature, and the duration of the pipe temperature is greater than the first preset duration; and determining the air conditioner's operating state as a defrosting state when the outer ring temperature of the air conditioner is lower than the second preset temperature and greater than or equal to the third preset temperature. When the air conditioner's condenser pipe temperature is less than or equal to the second preset pipe temperature and the duration of the pipe temperature is greater than or equal to the second preset duration, the air conditioner's operating state is determined to be the defrosting state, and the second preset pipe temperature is less than the first preset pipe temperature; when the air conditioner's outer ring temperature is less than the third preset temperature and greater than or equal to the fourth preset temperature, and the air conditioner's condenser pipe temperature is less than or equal to the third preset pipe temperature and the duration of the pipe temperature is greater than or equal to the third preset duration, the air conditioner's operating state is determined to be the defrosting state, and the third preset pipe temperature is less than the second preset pipe temperature.

[0117] Optionally, when the outer ring temperature of the air conditioner is less than the first outer ring temperature, the condenser pipe temperature of the air conditioner is less than or equal to the first preset pipe temperature, and the duration of the pipe temperature difference is greater than the target duration, the air conditioner is determined to be in a defrosting state. This includes: when the outer ring temperature of the air conditioner is less than or equal to the fourth preset temperature, the target temperature difference is less than or equal to the target temperature difference, and the duration of the temperature difference is greater than or equal to the fourth preset duration, the air conditioner is determined to be in a defrosting state. Here, the target temperature difference is the difference between the condenser pipe temperature and the outer ring temperature of the air conditioner, and the duration of the temperature difference is the duration of the target temperature difference.

[0118] Optionally, the indoor unit heat exchanger further includes a first electronic expansion valve, a second electronic expansion valve, and a third electronic expansion valve. After obtaining the outer ring temperature of the air conditioner, the condenser tube temperature of the air conditioner, and the duration of the tube temperature, the method further includes: when the air conditioner is in cooling mode or heating mode, closing the suction bypass valve and the exhaust bypass valve, and opening the first electronic expansion valve, the second electronic expansion valve, and the third electronic expansion valve.

[0119] It is obvious to those skilled in the art that the modules or steps of the present invention described above can be implemented using general-purpose computing devices. They can be centralized on a single computing device or distributed across a network of multiple computing devices. They can be implemented using computer-executable program code, and thus can be stored in a storage device for execution by a computing device. In some cases, the steps shown or described can be performed in a different order than those described herein, or they can be fabricated as separate integrated circuit modules, or multiple modules or steps can be fabricated as a single integrated circuit module. Thus, the present invention is not limited to any particular combination of hardware and software.

[0120] Those skilled in the art will understand that embodiments of this application can be provided as methods, systems, or computer program products. Therefore, this application can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, this application can take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0121] This application is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of this application. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, generate instructions for implementing the flowchart... Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0122] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0123] These computer program instructions may also be loaded onto a computer or other programmable data processing equipment to cause a series of operational steps to be performed on the computer or other programmable equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0124] In a typical configuration, a computing device includes one or more processors (CPU), input / output interfaces, network interfaces, and memory.

[0125] Memory may include non-persistent memory in computer-readable media, such as random access memory (RAM) and / or non-volatile memory, such as read-only memory (ROM) or flash RAM. Memory is an example of computer-readable media.

[0126] Computer-readable media includes both permanent and non-permanent, removable and non-removable media that can store information using any method or technology. Information can be computer-readable instructions, data structures, modules of programs, or other data. Examples of computer storage media include, but are not limited to, phase-change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other memory technologies, CD-ROM, digital versatile optical disc (DVD) or other optical storage, magnetic tape, magnetic magnetic disk storage or other magnetic storage devices, or any other non-transferable medium that can be used to store information accessible by a computing device. As defined herein, computer-readable media does not include transient computer-readable media, such as modulated data signals and carrier waves.

[0127] It should also be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0128] As can be seen from the above description, the embodiments of this application achieve the following technical effects:

[0129] 1) The air conditioner described in this application includes: an outdoor unit heat exchanger; an indoor unit heat exchanger including a first evaporator, a second evaporator, an exhaust bypass valve, an intake bypass valve, and a compressor, wherein the outdoor unit heat exchanger is connected to the compressor, the first evaporator, and the second evaporator via pipelines, the exhaust bypass valve is installed on the first pipeline connecting the compressor and the second evaporator, and the intake bypass valve is installed on the second pipeline connecting the compressor and the second evaporator; and a controller, used to open the exhaust bypass valve and the intake bypass valve when the air conditioner is in defrosting mode, so that the first part of the refrigerant discharged by the compressor flows sequentially through the outdoor unit heat exchanger and the first evaporator to the refrigerant confluence point to control the defrosting of the air conditioner, and to allow the second part of the refrigerant discharged by the compressor to flow through the exhaust bypass valve to the second evaporator and through the intake bypass valve to the refrigerant confluence point to control the heating of the air conditioner, wherein the sum of the first part of the refrigerant and the second part of the refrigerant is all the refrigerant discharged by the compressor. This air conditioner, by setting up intake and exhaust bypass valves and two evaporator modules, allows the refrigerant to be divided into two paths in defrost mode, which are used for defrosting and heating respectively. This enables uninterrupted defrosting and continuous heating during defrosting, solving the problem that existing household air conditioners cannot provide continuous heating during defrosting.

[0130] 2) The air conditioner control method described in this application is applied to a controller to control any type of air conditioner. First, the outer ring temperature, condenser pipe temperature, and pipe temperature duration of the air conditioner are acquired, with the pipe temperature duration being the same as the condenser pipe temperature duration. Then, if the outer ring temperature is lower than a first outer ring temperature, the condenser pipe temperature is lower than or equal to a first preset pipe temperature, and the pipe temperature duration is greater than a target duration, the air conditioner's operating state is determined to be defrosting mode. Finally, if the air conditioner is in defrosting mode, at least the suction bypass valve and the exhaust bypass valve are opened to control the refrigerant flow and thus control the defrosting process. This method, by setting suction and exhaust bypass valves and two evaporator modules, allows the refrigerant to be divided into two paths in defrosting mode, performing defrosting and heating respectively, achieving uninterrupted defrosting and continuous heating during defrosting, thus solving the problem of existing household air conditioners being unable to continuously heat during defrosting.

[0131] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A control method for an air conditioner, characterized in that, An air conditioner, applicable to a controller, includes an outdoor unit heat exchanger and an indoor unit heat exchanger, comprising a first evaporator, a second evaporator, an exhaust bypass valve, an intake bypass valve, and a compressor. The outdoor unit heat exchanger is connected to the compressor, the first evaporator, and the second evaporator via pipelines. The exhaust bypass valve is installed on a first pipeline connecting the compressor and the second evaporator, and the intake bypass valve is installed on a second pipeline connecting the compressor and the second evaporator. The control method includes: The outer ring temperature of the air conditioner, the condenser tube temperature of the air conditioner, and the duration of the tube temperature are obtained, wherein the duration of the tube temperature is the duration of the condenser tube temperature of the air conditioner. If the outer ring temperature of the air conditioner is less than the first outer ring temperature, the condenser pipe temperature of the air conditioner is less than or equal to the first preset pipe temperature, and the duration of the pipe temperature is greater than the target duration, the working state of the air conditioner is determined to be defrosting state. When the air conditioner is in the defrosting state, at least the intake bypass valve and the exhaust bypass valve are opened to control the flow of refrigerant and thus control the defrosting of the air conditioner. When the outer ring temperature of the air conditioner is lower than the first outer ring temperature, the condenser pipe temperature of the air conditioner is lower than or equal to the first preset pipe temperature, and the duration of the pipe temperature is greater than the target duration, the air conditioner is determined to be in defrosting mode, including: When the outer ring temperature of the air conditioner is less than or equal to the fourth preset temperature, the target temperature difference is less than or equal to the target temperature difference, and the duration of the temperature difference is greater than or equal to the fourth preset duration, the working state of the air conditioner is determined to be the defrosting state, wherein the target temperature difference is the difference between the condenser pipe temperature of the air conditioner and the outer ring temperature of the air conditioner, and the duration of the temperature difference is the duration of the target temperature difference.

2. The control method according to claim 1, characterized in that, The indoor unit heat exchanger further includes a first electronic expansion valve, a second electronic expansion valve, and a third electronic expansion valve. When the air conditioner is in the defrosting state, at least the suction bypass valve and the exhaust bypass valve are opened to control the refrigerant flow and thus control the defrosting of the air conditioner, including: When the air conditioner is in the defrosting state, the suction bypass valve, the exhaust bypass valve, and the second electronic expansion valve are opened, while the first electronic expansion valve and the third electronic expansion valve are closed. This allows the first portion of refrigerant discharged from the compressor to flow sequentially through the outdoor unit heat exchanger and the first evaporator to the refrigerant confluence point for defrosting the outdoor unit heat exchanger. After defrosting the outdoor unit heat exchanger, the first portion of refrigerant undergoes heat exchange and evaporation through the first evaporator. The second portion of refrigerant discharged from the compressor flows through the exhaust bypass valve through the second evaporator for heat exchange and evaporation, ensuring that the air conditioner continues to heat while defrosting the outdoor unit heat exchanger. The second portion of refrigerant then flows through the suction bypass valve to the refrigerant confluence point. The sum of the first portion and the second portion of refrigerant is the total refrigerant discharged from the compressor.

3. The control method according to claim 1, characterized in that, When the outer ring temperature of the air conditioner is lower than the first outer ring temperature, the condenser pipe temperature of the air conditioner is lower than or equal to the first preset pipe temperature, and the duration of the pipe temperature is greater than the target duration, the air conditioner is determined to be in defrosting mode, including: When the outer ring temperature of the air conditioner is less than the first preset temperature and greater than or equal to the second preset temperature, and the condenser pipe temperature of the air conditioner is less than or equal to the first preset pipe temperature and the duration of the pipe temperature is greater than the first preset duration, the working state of the air conditioner is determined to be the defrosting state. When the outer ring temperature of the air conditioner is less than the second preset temperature and greater than or equal to the third preset temperature, and the condenser pipe temperature of the air conditioner is less than or equal to the second preset pipe temperature and the duration of the pipe temperature is greater than or equal to the second preset duration, the working state of the air conditioner is determined to be the defrosting state, and the second preset pipe temperature is less than the first preset pipe temperature. When the outer ring temperature of the air conditioner is less than the third preset temperature and greater than or equal to the fourth preset temperature, and the condenser pipe temperature of the air conditioner is less than or equal to the third preset pipe temperature and the duration of the pipe temperature is greater than or equal to the third preset duration, the working state of the air conditioner is determined to be the defrosting state, and the third preset pipe temperature is less than the second preset pipe temperature.

4. The control method according to claim 1, characterized in that, The indoor unit heat exchanger further includes a first electronic expansion valve, a second electronic expansion valve, and a third electronic expansion valve. After acquiring the outer ring temperature of the air conditioner, the condenser pipe temperature of the air conditioner, and the duration of the pipe temperature, the method further includes: When the air conditioner is in cooling or heating mode, the intake bypass valve and the exhaust bypass valve are closed, and the first electronic expansion valve, the second electronic expansion valve, and the third electronic expansion valve are opened.

5. A computer-readable storage medium, characterized in that, The computer-readable storage medium includes a stored program, wherein, when the program is executed, it controls the device containing the computer-readable storage medium to perform the control method of the air conditioner according to any one of claims 1 to 4.

6. An air conditioner, characterized in that, include: One or more processors, a memory, and one or more programs, wherein the one or more programs are stored in the memory and configured to be executed by the one or more processors, the one or more programs including a control method for performing an air conditioner according to any one of claims 1 to 4.

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