Air conditioner refrigerant recovery method, device, air conditioner and storage medium

Abstract

Embodiments of the present invention disclose a refrigerant recovery method, device, air conditioner, and storage medium for an air conditioner. The method includes: when the air conditioner is operating in refrigerant recovery mode, obtaining the outdoor ambient temperature and the air outlet temperature of the outdoor fan; determining whether the air conditioner's refrigerant has been fully recovered based on the outdoor ambient temperature and the air outlet temperature; and, if the refrigerant has been fully recovered, controlling the air conditioner to exit the refrigerant recovery mode. Implementing the method of the embodiments of the present invention enables precise refrigerant recovery, reduces refrigerant waste, and improves resource utilization.

Description

Technical Field

[0001] The present invention relates to the field of air conditioning, and in particular to a method and device for recovering refrigerant of an air conditioner, an air conditioner and a storage medium. Background Art

[0002] With the continuous development of industry, air conditioning has become increasingly important in our daily lives. Air conditioners exchange and transfer heat through the conversion of refrigerant between gas and liquid. During operation, refrigerant flows through all pipes to adjust the temperature. However, refrigerant droplets inevitably adhere to the pipe walls. When the air conditioner needs to be disassembled, the refrigerant adhering to the pipe walls cannot be recovered, resulting in refrigerant waste. In some cases, refrigerant droplets may remain in the pipes, shortening the air conditioner's service life. Summary of the Invention

[0003] The embodiments of the present invention provide a method and device for recycling refrigerant in an air conditioner, an air conditioner, and a storage medium, aiming to achieve accurate recycling of refrigerant, reduce refrigerant waste, and thus improve resource utilization.

[0004] In a first aspect, an embodiment of the present invention provides a refrigerant recovery method for an air conditioner, comprising: if the air conditioner is operating in a refrigerant recovery mode, obtaining the outdoor ambient temperature and the air outlet temperature of the outdoor fan; judging whether the refrigerant of the air conditioner has been completely recovered based on the outdoor ambient temperature and the air outlet temperature; if the refrigerant of the air conditioner has been completely recovered, controlling the air conditioner to exit the refrigerant recovery mode.

[0005] In a second aspect, an embodiment of the present invention further provides a refrigerant recovery device for an air conditioner, comprising: an acquisition unit for acquiring the outdoor ambient temperature and the air outlet temperature of the outdoor fan if the air conditioner is operating in a refrigerant recovery mode; a judgment unit for judging whether the refrigerant of the air conditioner has been completely recovered based on the outdoor ambient temperature and the air outlet temperature; and an exit unit for controlling the air conditioner to exit the refrigerant recovery mode if the refrigerant of the air conditioner has been completely recovered.

[0006] In a third aspect, an embodiment of the present invention further provides an air conditioner, which includes a memory and a processor, wherein a computer program is stored in the memory, and the processor implements the above method when executing the computer program.

[0007] In a fourth aspect, an embodiment of the present invention further provides a computer-readable storage medium, wherein the storage medium stores a computer program, wherein the computer program includes program instructions, and when the program instructions are executed by a processor, the above method can be implemented.

[0008] An embodiment of the present invention provides a refrigerant recovery method and device for an air conditioner, an air conditioner, and a storage medium. The method includes: if the air conditioner is operating in a refrigerant recovery mode, obtaining the outdoor ambient temperature and the air outlet temperature of the outdoor fan; determining whether the refrigerant in the air conditioner has been completely recovered based on the outdoor ambient temperature and the air outlet temperature; and if the refrigerant in the air conditioner has been completely recovered, controlling the air conditioner to exit the refrigerant recovery mode. In this embodiment of the present invention, the temperature of the heat exchanger is indirectly obtained by obtaining the air outlet temperature of the outdoor fan. Because the temperature of the heat exchanger is often very high in cooling mode, when the air conditioner begins to recover refrigerant, the temperature of the heat exchanger rapidly drops until it reaches the same level as the outdoor ambient temperature. This indicates that the heat exchanger is no longer performing heat exchange and that refrigerant recovery has been completed. Therefore, the obtained outdoor fan outlet temperature can be compared with the outdoor ambient temperature to determine whether the refrigerant has been completely recovered, thereby achieving accurate refrigerant recovery, reducing refrigerant waste, and improving resource utilization. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0010] Figure 1 A schematic diagram of a scenario of a refrigerant recovery method for an air conditioner provided by an embodiment of the present invention;

[0011] Figure 2 A schematic flow chart of a method for recovering refrigerant from an air conditioner according to an embodiment of the present invention;

[0012] Figure 3 A schematic diagram of a sub-process of a refrigerant recovery method for an air conditioner provided by an embodiment of the present invention;

[0013] Figure 4 A schematic diagram of a sub-process of a refrigerant recovery method for an air conditioner provided by an embodiment of the present invention;

[0014] Figure 5 A schematic diagram of a sub-process of a refrigerant recovery method for an air conditioner provided by an embodiment of the present invention;

[0015] Figure 6 A schematic diagram of a sub-process of a refrigerant recovery method for an air conditioner provided by an embodiment of the present invention;

[0016] Figure 7 A simplified logic diagram of a method and device for recovering refrigerant from an air conditioner provided by an embodiment of the present invention;

[0017] Figure 8A schematic block diagram of a method and apparatus for recovering refrigerant from an air conditioner provided by an embodiment of the present invention;

[0018] Figure 9 A schematic block diagram of an air conditioner provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0019] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0020] It will be understood that when used in this specification and the appended claims, the terms “comprises” and “comprising” indicate the presence of described features, integers, steps, operations, elements and / or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or groups thereof.

[0021] It should also be understood that the terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the present invention. As used in the specification and appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms unless the context clearly indicates otherwise.

[0022] It should be further understood that the term "and / or" used in the present description and the appended claims refers to and includes any and all possible combinations of one or more of the associated listed items.

[0023] See also Figure 1 , Figure 1 A schematic diagram of a scenario illustrating a refrigerant recovery method for an air conditioner provided in an embodiment of the present invention. The refrigerant recovery method for an air conditioner in this embodiment can be applied to air conditioners, for example, when the air conditioner needs to be disassembled for refrigerant recovery, or when accurate refrigerant injection data is required during an experiment. This method utilizes a temperature sensor installed at the outdoor unit's air outlet grille to detect the outlet air temperature during refrigerant recovery and compare it with the ambient temperature to determine the degree of refrigerant recovery. This allows for precise refrigerant recovery, reduces refrigerant waste, and improves resource utilization.

[0024] An embodiment of the present invention provides an air conditioner, including an outdoor unit, wherein the outdoor unit includes a casing and an outdoor fan accommodated in the casing, the casing has a grille, and a temperature sensor is provided on the grille. The temperature sensor is used to detect the air outlet temperature of the outdoor fan.

[0025] Specifically, the measurement accuracy of the temperature sensor is set to 0.1°C, and it maintains extremely high sensitivity, and is installed on the outside of the panel at the air outlet grille of the air conditioner's outdoor unit. Because the temperature of the air conditioner's outdoor unit heat exchanger is much higher than the outdoor ambient temperature when the air conditioner turns on the cooling mode, but when the refrigerant begins to be recovered, the temperature of the outdoor unit heat exchanger will drop rapidly until it is roughly the same as the outdoor ambient temperature. Therefore, by detecting the air outlet temperature of the air conditioner's outdoor unit, the temperature of the outdoor unit heat exchanger can be indirectly detected to determine whether the refrigerant has been completely recovered. By setting a temperature sensor at the air outlet grille of the air conditioner's outdoor unit to indirectly detect the temperature of the outdoor unit heat exchanger, it is convenient to determine whether the refrigerant has been completely recovered.

[0026] Figure 2 The figure is a flow chart of a method for recovering refrigerant of an air conditioner provided by an embodiment of the present invention. As shown in the figure, the method includes the following steps S110-S130.

[0027] S110: If the air conditioner is operating in a refrigerant recovery mode, obtain the outdoor ambient temperature and the air outlet temperature of the outdoor fan;

[0028] In this embodiment, the refrigerant recovery mode is when the air conditioner enters the refrigerant recovery process. When the air conditioner is running in the refrigerant recovery mode, the air conditioner turns on the cooling mode and closes the small valve of the air conditioner. The sensor arranged on the valve will transmit the signal of refrigerant recovery to other components and start the refrigerant recovery program. At this time, the system will send an instruction to the temperature sensor at the air outlet grille of the outdoor unit to make the temperature sensor start working. The temperature sensor starts to detect the air outlet temperature of the outdoor unit of the air conditioner. At this time, the air outlet temperature of the outdoor fan can be obtained, and the current outdoor environment temperature can be obtained through the outdoor environment temperature sensor. Because when the air conditioner recycles the refrigerant, the temperature of the outdoor unit heat exchanger will drop rapidly until it is roughly the same as the outdoor environment temperature. Therefore, when the air conditioner is running in the refrigerant recovery mode, the outdoor environment temperature and the air outlet temperature of the outdoor fan are obtained to provide data support for judging whether the refrigerant of the air conditioner is completely recovered.

[0029] S120, determining whether the refrigerant of the air conditioner has been completely recovered based on the outdoor ambient temperature and the air outlet temperature;

[0030] In this embodiment, whether the refrigerant has been completely recovered refers to whether the refrigerant has been completely recovered in the condenser. If the refrigerant is not completely recovered, the refrigerant liquid will remain in the pipeline or adhere to the pipe wall, which will cause waste of resources and environmental pollution, and will also cause irreversible damage to the air conditioner. Therefore, it is necessary to determine whether the refrigerant is completely recovered. When the air conditioner enters the refrigerant recovery mode, the temperature of the outdoor heat exchanger will drop rapidly. The heat exchanger temperature can be indirectly detected by the outlet air temperature, that is, the outlet air temperature and the outdoor ambient temperature can be used to determine whether the outdoor heat exchanger temperature is the same as the outdoor ambient temperature. If the outdoor heat exchanger temperature is roughly the same as the outdoor ambient temperature, it can be said that the heat exchanger is no longer performing heat exchange and the refrigerant is completely recovered. By using the outdoor ambient temperature and the outlet air temperature, it can be determined whether the refrigerant of the air conditioner has been completely recovered.

[0031] In one embodiment, if Figure 3 As shown, step S120 includes steps S121-S122.

[0032] S121, comparing the air outlet temperature with the outdoor ambient temperature;

[0033] S122: If the air outlet temperature is less than or equal to the outdoor ambient temperature, it is determined that the refrigerant of the air conditioner has been completely recovered.

[0034] In this embodiment, the outlet air temperature is compared with the outdoor ambient temperature. Based on the comparison result, it can be determined whether the air conditioner's refrigerant has been completely recovered. If the outlet air temperature is less than or equal to the outdoor ambient temperature, it means that the temperature of the outdoor unit heat exchanger is less than or equal to the outdoor ambient temperature. Due to the closure of the small valve, the pipeline for the refrigerant to flow to the indoor unit has been closed, and the heat exchange medium has been lost. Therefore, the outdoor unit heat exchanger is no longer carrying out heat exchange, and it can be determined that the air conditioner's refrigerant has been completely recovered. By comparing the outlet air temperature with the outdoor ambient temperature, when the outlet air temperature is less than or equal to the outdoor ambient temperature, it is determined that the air conditioner's refrigerant has been completely recovered. This proves that no refrigerant remains in the pipeline at this time, and can achieve accurate refrigerant recovery.

[0035] In one embodiment, if Figure 4 As shown, step S120 includes steps S123-S125.

[0036] S123. If the outlet air temperature is greater than the outdoor ambient temperature, detecting a first duration in which the outlet air temperature is greater than the outdoor ambient temperature;

[0037] S124. Determine whether the first duration is greater than a first preset time threshold;

[0038] S125: If the first duration is not greater than a first preset time threshold, it is determined that the refrigerant of the air conditioner is not completely recovered.

[0039] In this embodiment, the first duration is the time during which the outlet air temperature is greater than the outdoor ambient temperature, and the first preset time threshold is the approximate time required for refrigerant recovery under normal refrigerant recovery conditions. The outlet air temperature and the outdoor ambient temperature are measured once at fixed intervals. For example, the outlet air temperature and the outdoor ambient temperature are measured once every five seconds. The first duration during which the outlet air temperature is greater than the outdoor ambient temperature can be detected based on the interval and the temperature measured each time. For example, the outdoor ambient temperature is set to I1 and the outlet air temperature is set to I2. I1 and I2 are measured every five seconds. If the test result shows that I2>I1, and the duration of I2>I1 does not exceed 20 seconds, it indicates that there is still refrigerant remaining in the evaporator and pipelines of the air conditioner, and the refrigerant should continue to be recovered. Because if the refrigerant is fully recovered, the outlet air temperature should be the same as or very close to the outdoor ambient temperature, and the recovery time has not reached the normal time for fully recovering the refrigerant, the refrigerant is not fully recovered at this time and can continue to be recovered. If I2≤I1, that is, the outlet air temperature is less than or equal to the outdoor ambient temperature, it means that the temperature in the outdoor heat exchanger and pipeline has dropped to the same as the ambient temperature, proving that the refrigerant is no longer flowing and no longer exchanges heat with other media, and the refrigerant is completely recovered into the outdoor heat exchanger. By determining the first duration that the outlet air temperature is greater than the outdoor ambient temperature and determining whether the first duration is greater than a first preset time threshold, it is easy to understand whether the refrigerant is fully recovered within the preset time threshold.

[0040] S130: If the refrigerant of the air conditioner has been completely recovered, control the air conditioner to exit the refrigerant recovery mode.

[0041] In this embodiment, if the refrigerant of the air conditioner has been completely recovered, it means that the refrigerant no longer flows, no longer exchanges heat with other media, and has been completely recovered into the outdoor heat exchanger. Therefore, the air conditioner can be controlled to exit the refrigerant recovery mode at this time. Exiting the refrigerant recovery mode is to close the large valve, turn off the power, and manually open the small valve to avoid the air conditioner malfunctioning due to forgetting to manually open the small valve.

[0042] This embodiment further includes controlling the display screen to display a second air conditioning code, wherein the second air conditioning code indicates that the refrigerant in the air conditioner has been completely recovered. The second air conditioning code is preset reminder data. For example, the second air conditioning code can be set to double 6, that is, the display screen will display 66 when the refrigerant in the air conditioner has been completely recovered. By controlling the display screen to display the second air conditioning code when the refrigerant in the air conditioner has been completely recovered, it is convenient to remind recycling personnel that the refrigerant has been completely recovered and to remind personnel to manually open the small valve at this time, thereby achieving accurate refrigerant recovery, reducing refrigerant waste, and thus improving resource utilization.

[0043] In one embodiment, if Figure 5 As shown, step S130 includes steps S131-S132.

[0044] S131. Determine whether the first duration is greater than a second preset time threshold;

[0045] S132: If the first duration is greater than a second preset time threshold, control the air conditioner to alarm.

[0046] In this embodiment, the second preset time threshold is a critical time point for preventing the valve cut-off protection function from being triggered. If the outlet air temperature is greater than the outdoor ambient temperature and the first duration is greater than the first preset time threshold, the difference between the outlet air temperature and the outdoor ambient temperature is obtained. If the difference between the outlet air temperature and the outdoor ambient temperature is not greater than 0.1°C, it means that the air conditioner has entered the refrigerant recovery mode and is executing the refrigerant recovery program. However, because the refrigerant injection volume of the air conditioner is not too large, the refrigerant recovery time will not be too long, so the second preset time threshold is set. Specifically, to prevent the valve cut-off protection function from being triggered, the second preset time threshold can be set to 180 seconds so that the valve cut-off protection function will not be triggered. If the refrigerant recovery mode is entered and the refrigerant recovery is not completed within the critical time, it may be that the temperature sensor is faulty or there is a problem with a component of the air conditioner. Therefore, the air conditioner is controlled to alarm to remind the recovery personnel to check the temperature sensor and the internal structure of the air conditioner.

[0047] In one embodiment, if Figure 6 As shown, step S132 includes steps S1321-S1322.

[0048] S1321, controlling the buzzer to execute a preset sound instruction to issue a sound alarm; and / or

[0049] S1322. Control the display screen to display a first air conditioning code, wherein the first air conditioning code indicates that the air conditioner has a fault.

[0050] In this embodiment, the preset sound command is a command for issuing an audible alarm. Specifically, the buzzer sounds an alarm in a rhythm of three short and one long sounds. The first air conditioner code indicates that the air conditioner may be faulty. Specifically, the display screen can be controlled to display a double 8, and the display screen continuously flashes to alert the recycling personnel to the air conditioner. This is an abnormal situation and requires the immediate closure of the large valve and power supply, and the cessation of refrigerant recovery. The recycling personnel must also manually close the small valve. Failure to do so immediately will trigger the valve shutoff protection function. By controlling the buzzer to sound an audible alarm and controlling the display screen to display the first air conditioner code and continuously flashing to alert the recycling personnel to the air conditioner, they need to immediately perform operations such as shutting off the power supply to avoid triggering the valve shutoff protection function due to the fault lasting too long.

[0051] In order to further understand the refrigerant recovery process of the embodiment of the present invention, the following is explained through a specific example:

[0052] like Figure 7As shown, when refrigerant is recovered, the air conditioner is controlled to enter cooling mode, the small valve is closed, and the air conditioner starts refrigerant recovery mode. At this time, the temperature sensor at the outdoor unit's air outlet grille begins to work. The temperature sensor detects the outdoor fan's outlet air temperature at fixed intervals and compares it with the outdoor ambient temperature measured by the outdoor temperature sensor. Because the heat exchanger temperature can be indirectly detected by the outlet air temperature, that is, the outlet air temperature and the outdoor ambient temperature can be used to determine whether the outdoor unit heat exchanger temperature is the same as the outdoor ambient temperature. In addition, when the air conditioner begins to recover refrigerant, the temperature of the outdoor unit heat exchanger will drop rapidly until it is equivalent to the outdoor ambient temperature, indicating that the outdoor unit heat exchanger is no longer performing heat exchange and the refrigerant has been recovered. Therefore, the obtained outdoor fan outlet air temperature can be compared with the outdoor ambient temperature to determine whether the refrigerant has been fully recovered. Specifically, if the outlet air temperature is greater than the outdoor ambient temperature and the duration does not exceed the first preset time threshold, it indicates that refrigerant still remains in the air conditioner's evaporator and pipelines, and refrigerant recovery should continue. If the outlet air temperature is less than or equal to the outdoor ambient temperature, the refrigerant has ceased to flow and has been completely recovered in the outdoor heat exchanger. The indoor unit will display the second air conditioning code, close the main valve, turn off the power, and manually open the small valve to complete the air conditioner's refrigerant recovery process. If the outlet air temperature is greater than the outdoor ambient temperature by no more than 0.1°C and the duration exceeds the second preset time threshold, the indoor unit will display the first air conditioning code and flash continuously. The buzzer will sound an alarm in a rhythm of three short and one long beeps. At this time, the main valve should be closed, the power should be turned off, and the fluorine recovery process should be stopped. This situation may be caused by a temperature sensor failure or a problem within the air conditioner. The maximum operation time is 180 seconds to avoid triggering the valve cutoff protection function, so an alarm is required to alert the recovery personnel to check. By comparing the air outlet temperature of the outdoor fan with the outdoor ambient temperature, it is determined whether the refrigerant has been completely recovered, so as to achieve accurate refrigerant recovery, reduce refrigerant waste and improve resource utilization.

[0053] Figure 8 FIG. 2 is a schematic block diagram of an air conditioner refrigerant recovery method and device 200 provided by an embodiment of the present invention. Figure 8 As shown, corresponding to the above-mentioned air conditioner refrigerant recovery method, the present invention also provides an air conditioner refrigerant recovery device. The air conditioner refrigerant recovery method device includes a unit for executing the above-mentioned air conditioner refrigerant recovery method, and the device can be configured in the air conditioner. Specifically, please refer to Figure 8 The air conditioner refrigerant recovery method device includes an acquisition unit 210, a judgment unit 220 and an exit unit 230.

[0054] The acquisition unit 210 is configured to acquire the outdoor ambient temperature and the air outlet temperature of the outdoor fan if the air conditioner operates in the refrigerant recovery mode.

[0055] The judgment unit 220 is used to judge whether the refrigerant of the air conditioner has been completely recovered according to the outdoor ambient temperature and the air outlet temperature.

[0056] In one embodiment, the determination unit 220 includes a first comparison unit and a first determination unit.

[0057] a first comparing unit, configured to compare the outlet air temperature with the outdoor ambient temperature;

[0058] The first determination unit is configured to determine that the refrigerant of the air conditioner has been completely recovered if the outlet air temperature is less than or equal to the outdoor ambient temperature.

[0059] In one embodiment, the judgment unit 220 further includes a detection unit, a second judgment unit, and a second determination unit.

[0060] a detection unit, configured to detect a first duration during which the outlet air temperature is greater than the outdoor ambient temperature if the outlet air temperature is greater than the outdoor ambient temperature;

[0061] a second determining unit, configured to determine whether the first duration is greater than a first preset time threshold;

[0062] The second determination unit is configured to determine that the refrigerant of the air conditioner is not completely recovered if the first duration is not greater than a first preset time threshold.

[0063] The exit unit 230 is configured to control the air conditioner to exit the refrigerant recovery mode if the refrigerant of the air conditioner has been completely recovered.

[0064] In one embodiment, the exit unit 230 includes a third judgment unit, a control unit, a control subunit, and a code unit.

[0065] a third judging unit, configured to judge whether the first duration is greater than a second preset time threshold;

[0066] a control unit, configured to control the air conditioner to sound an alarm if the first duration is greater than a second preset time threshold;

[0067] A control subunit, configured to control the buzzer to execute a preset sound instruction to issue a sound alarm; and / or

[0068] The code unit is used to control the display screen to display a first air-conditioning code, wherein the first air-conditioning code indicates that there is a fault in the air conditioner.

[0069] It should be noted that technicians in the relevant field can clearly understand that the specific implementation process of the above-mentioned air conditioner refrigerant recovery method device 200 and each unit can refer to the corresponding description in the aforementioned method embodiment. For the convenience and brevity of description, it will not be repeated here.

[0070] The above-mentioned air conditioner refrigerant recovery method and device can be implemented in the form of a computer program. The computer program can be used in Figure 9 The air conditioner shown is running.

[0071] See also Figure 9 , Figure 9 1 is a schematic block diagram of an air conditioner provided in an embodiment of the present application. The air conditioner 500 can be a wall-mounted air conditioner, a cabinet air conditioner, a ceiling-mounted air conditioner, or a window air conditioner.

[0072] See Figure 9 The air conditioner 500 includes a processor 502 , a memory, and a network interface 505 connected via a system bus 501 , wherein the memory may include a non-volatile storage medium 503 and an internal memory 504 .

[0073] The non-volatile storage medium 503 can store an operating system 5031 and a computer program 5032. The computer program 5032 includes program instructions, which, when executed, can cause the processor 502 to execute a method for recovering refrigerant of an air conditioner.

[0074] The processor 502 is used to provide computing and control capabilities to support the operation of the entire air conditioner 500 .

[0075] The internal memory 504 provides an environment for the operation of the computer program 5032 in the non-volatile storage medium 503. When the computer program 5032 is executed by the processor 502, the processor 502 can execute a method for recovering refrigerant of an air conditioner.

[0076] The network interface 505 is used to communicate with other devices through the network. Figure 9 The structure shown in the figure is merely a block diagram of a portion of the structure related to the solution of the present application, and does not constitute a limitation on the air conditioner 500 to which the solution of the present application is applied. The specific air conditioner 500 may include more or fewer components than shown in the figure, or combine certain components, or have a different component arrangement.

[0077] The processor 502 is configured to run a computer program 5032 stored in the memory to implement the steps of the above method.

[0078] It should be understood that in the embodiment of the present application, the processor 502 may be a central processing unit (CPU), and the processor 502 may also be other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field-programmable gate arrays (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. Among them, the general-purpose processor may be a microprocessor or the processor may also be any conventional processor, etc.

[0079] Those skilled in the art will appreciate that all or part of the steps in the method of the above-described embodiment can be implemented by instructing the relevant hardware through a computer program. The computer program includes program instructions, which can be stored in a storage medium that is computer-readable. The program instructions are executed by at least one processor in the computer system to implement the steps in the method of the above-described embodiment.

[0080] Therefore, the present invention also provides a storage medium. The storage medium may be a computer-readable storage medium. The storage medium stores a computer program, wherein the computer program includes program instructions. When the program instructions are executed by a processor, the processor performs the steps of the above method.

[0081] The storage medium may be any computer-readable storage medium that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a magnetic disk, or an optical disk.

[0082] Those skilled in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, computer software, or a combination of the two. In order to clearly illustrate the interchangeability of hardware and software, the above description has generally described the composition and steps of each example according to function. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of the present invention.

[0083] In the several embodiments provided herein, it should be understood that the disclosed devices and methods can be implemented in other ways. For example, the device embodiments described above are merely illustrative. For example, the division of the various units is merely a logical functional division, and actual implementation may employ other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be omitted or not implemented.

[0084] The steps in the methods of the embodiments of the present invention may be adjusted in order, combined, or deleted as needed. The units in the devices of the embodiments of the present invention may be combined, divided, or deleted as needed. Furthermore, the functional units in the various embodiments of the present invention may be integrated into a single processing unit, each unit may exist physically separately, or two or more units may be integrated into a single unit.

[0085] If this integrated unit is implemented as a software functional unit and sold or used as an independent product, it can be stored in a storage medium. Based on this understanding, the technical solution of the present invention, or the portion that contributes to the prior art, or all or part of the technical solution, can be embodied in the form of a software product. This computer software product, stored in a storage medium, includes several instructions for causing an air conditioner to execute all or part of the steps of the method described in various embodiments of the present invention.

[0086] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in the present invention, and such modifications or substitutions are intended to be within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be subject to the scope of protection of the claims.

Claims

1. A method for recovering refrigerant from an air conditioner, characterized in that: include: If the air conditioner is operating in a refrigerant recovery mode, obtaining the outdoor ambient temperature and the air outlet temperature of the outdoor fan; Determining whether the refrigerant of the air conditioner has been completely recovered according to the outdoor ambient temperature and the air outlet temperature; If the refrigerant of the air conditioner has been completely recovered, controlling the air conditioner to exit the refrigerant recovery mode; The step of determining whether the refrigerant of the air conditioner has been completely recovered based on the outdoor ambient temperature and the air outlet temperature includes: comparing the air outlet temperature with the outdoor ambient temperature; If the air outlet temperature is less than or equal to the outdoor ambient temperature, it is determined that the refrigerant of the air conditioner has been completely recovered; The step of determining whether the refrigerant of the air conditioner has been completely recovered based on the outdoor ambient temperature and the air outlet temperature includes: If the outlet air temperature is greater than the outdoor ambient temperature, detecting a first duration in which the outlet air temperature is greater than the outdoor ambient temperature; Determining whether the first duration is greater than a first preset time threshold; If the first duration is not greater than a first preset time threshold, determining that the refrigerant of the air conditioner is not completely recovered; The step of controlling the air conditioner to exit the refrigerant recovery mode includes: Determining whether the first duration is greater than a second preset time threshold; If the first duration is greater than a second preset time threshold, the air conditioner is controlled to alarm.

2. The method according to claim 1, characterized in that The step of controlling the air conditioner to alarm includes: Controlling the buzzer to execute a preset sound command to sound an alarm; and / or The control display screen displays a first air conditioning code, wherein the first air conditioning code indicates that there is a fault in the air conditioner.

3. The method according to claim 1, characterized in that After the step of controlling the air conditioner to exit the refrigerant recovery mode if the refrigerant of the air conditioner has been completely recovered, the method further includes: The control display screen displays a second air conditioning code, wherein the second air conditioning code indicates that the refrigerant of the air conditioner has been completely recovered.

4. An air conditioner comprising an outdoor unit, the outdoor unit comprising a casing and an outdoor fan housed in the casing, the casing having a grille, characterized in that: A temperature sensor is provided on the grille, and the temperature sensor is used to detect the outlet air temperature of the outdoor fan. The air conditioner is applied to the air conditioner refrigerant recovery method according to any one of claims 1-3.

5. An air conditioner refrigerant recovery device, characterized in that: The apparatus comprises means for executing the method according to any one of claims 1 to 3.

6. An air conditioner, characterized in that: The air conditioner includes a memory and a processor, wherein a computer program is stored in the memory, and the processor implements the method according to any one of claims 1 to 3 when executing the computer program.

7. A storage medium, characterized in that: The storage medium stores a computer program, wherein the computer program includes program instructions, and when the program instructions are executed by a processor, the method according to any one of claims 1 to 3 can be implemented.

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