Monitoring method, device and equipment of stop valve, air conditioner and medium

Abstract

The invention provides a monitoring method, device and equipment for a stop valve, an air conditioner and a medium, and the monitoring method comprises the steps that after a compressor of the air conditioner operates for a first preset duration, a first difference value between the current temperature of an indoor unit coil in the air conditioner and the reference temperature of the indoor unit coil in the current operation mode of the air conditioner is determined; if the first difference value is smaller than a first preset difference value corresponding to the current operation mode of the air conditioner, the compressor is controlled to stop, and 1 is added to the number of times when the first difference value is smaller than the first preset difference value; if the times reach the preset times, determining that the stop valve is not opened, and maintaining the shutdown state of the compressor; if the number of times does not reach the preset number of times, after the shutdown duration of the compressor reaches the second preset duration, the compressor is restarted and then the next detection is carried out, so that whether the stop valve is opened or not can be accurately detected, the compressor is controlled to be shut down when the stop valve is not opened, and the phenomena that a refrigerant is not circulated, the system pressure is high and damage is easily caused are prevented; and the operation safety of the compressor is improved.

Description

Technical Field

[0001] The invention relates to the technical field of air conditioning, and specifically provides a monitoring method, device, equipment, air conditioning and medium for a stop valve. Background Art

[0002] The split air conditioner consists of an indoor unit and an outdoor unit. When the construction team installs the unit for trial operation, they sometimes forget to open the stop valve. If the stop valve is not opened, the refrigerant will not circulate after the air conditioner is powered on, the system pressure will be high, and it is easy to cause damage.

[0003] Therefore, how to timely detect and ensure that the stop valve is fault-free after installation and maintenance and improve the safety of air-conditioning operation is a technical problem that needs to be solved urgently by technical personnel in this field. Summary of the invention

[0004] In order to overcome the above-mentioned defects, the present invention is proposed to provide a stop valve monitoring method, device, equipment, air conditioner and medium that solves or at least partially solves the technical problem that the air conditioner is easily damaged due to high system pressure because the stop valve is forgotten to be opened after installation and maintenance.

[0005] In a first aspect, the present invention provides a monitoring method for a stop valve, the monitoring method for a stop valve comprising:

[0006] After the compressor of the air conditioner has been running for a first preset time, determining a first difference between a current temperature of an indoor unit coil in the air conditioner and a reference temperature of the indoor unit coil in a current operating mode of the air conditioner;

[0007] If the first difference is less than a first preset difference corresponding to the current operation mode of the air conditioner, the compressor is controlled to stop, and the number of times the first difference is less than the first preset difference is increased by 1;

[0008] If the number of times reaches the preset number of times, it is determined that the stop valve is not opened, and the compressor is kept in a stopped state;

[0009] If the number of times does not reach the preset number of times, when the compressor is shut down for a second preset time, the compressor is restarted and then the next detection is performed.

[0010] Furthermore, the above-mentioned stop valve monitoring method further includes:

[0011] If the difference is greater than or equal to a first preset difference corresponding to the current operation mode of the air conditioner, the return air temperature of the indoor unit is obtained;

[0012] When the second difference between the current temperature of the indoor unit coil and the return air temperature of the indoor unit is greater than the second preset difference, start timing to obtain a first accumulated timing duration when the second difference is greater than the second preset difference in the current operation mode of the air conditioner;

[0013] Determine the sum of the first accumulated timing duration and the second accumulated timing duration in other operating modes of the air conditioner;

[0014] If the sum is greater than or equal to the third preset time length, it is determined that the stop valve is opened.

[0015] Furthermore, the above-mentioned stop valve monitoring method further includes:

[0016] If the sum is greater than or equal to the third preset time length, the stop valve protection control function is disabled until it is detected that the air conditioner is being tested again, and then the stop valve protection function is enabled.

[0017] Furthermore, in the above-mentioned stop valve monitoring method, before determining the first difference between the current temperature of the indoor unit coil in the air conditioner and the reference temperature of the indoor unit coil in the current operation mode of the air conditioner, it also includes:

[0018] If the current operation mode of the air conditioner is the heating mode, the first sampling temperature of the indoor unit coil is used as the reference temperature of the indoor unit coil.

[0019] Furthermore, in the above-mentioned stop valve monitoring method, before determining the first difference between the current temperature of the indoor unit coil in the air conditioner and the reference temperature of the indoor unit coil in the current operation mode of the air conditioner, it also includes:

[0020] If the current operation mode of the air conditioner is the cooling mode or the dehumidification mode, the indoor unit is controlled to operate for a fourth preset time period, and the lowest temperature of the indoor unit coil collected within the fourth preset time period is used as the reference temperature of the indoor unit coil.

[0021] In a second aspect, the present invention provides a monitoring device for a stop valve, the monitoring device for a stop valve comprising:

[0022] a determination module, configured to determine a first difference between a current temperature of an indoor unit coil in the air conditioner and a reference temperature of the indoor unit coil in a current operation mode of the air conditioner after the compressor of the air conditioner has been running for a first preset time;

[0023] The control module is used to control the compressor to stop if the first difference is less than a first preset difference corresponding to the current operating mode of the air conditioner, and add 1 to the number of times the first difference is less than the first preset difference; if the number reaches the preset number, it is determined that the stop valve is not opened and the compressor is maintained in the stopped state; if the number does not reach the preset number, when the length of time the compressor is stopped reaches a second preset length of time, the next detection is performed after restarting.

[0024] Furthermore, in the above-mentioned stop valve monitoring device, the control module is also used for:

[0025] If the difference is greater than or equal to a first preset difference corresponding to the current operation mode of the air conditioner, the return air temperature of the indoor unit is obtained;

[0026] When the second difference between the current temperature of the indoor unit coil and the return air temperature of the indoor unit is greater than the second preset difference, start timing to obtain a first accumulated timing duration when the second difference is greater than the second preset difference in the current operation mode of the air conditioner;

[0027] Determine the sum of the first accumulated timing duration and the second accumulated timing duration in other operating modes of the air conditioner;

[0028] If the sum is greater than or equal to the third preset time length, it is determined that the stop valve is opened.

[0029] In a third aspect, the present invention provides a monitoring device for a stop valve, which includes a processor and a storage device, wherein the storage device is suitable for storing multiple program codes, and the program codes are suitable for being loaded and run by the processor to execute any of the above-mentioned stop valve monitoring methods.

[0030] In a fourth aspect, an air conditioner is provided, the air conditioner comprising the monitoring device of the stop valve as described above.

[0031] In a fifth aspect, a computer-readable storage medium is provided, in which a plurality of program codes are stored, wherein the program codes are suitable for being loaded and run by a processor to execute any of the above-mentioned methods for monitoring a stop valve.

[0032] The above one or more technical solutions of the present invention have at least one or more of the following beneficial effects:

[0033] In the technical solution for implementing the present invention, after the compressor of the air conditioner has run for a first preset time, a first difference between the current temperature of the indoor coil in the air conditioner and the reference temperature of the indoor coil in the current operating mode of the air conditioner is determined; if the first difference is less than the first preset difference corresponding to the current operating mode of the air conditioner, the compressor is controlled to stop, and the number of times the first difference is less than the first preset difference is increased by 1; if the number reaches the preset number, it is determined that the stop valve is not open, and the compressor is maintained in a stopped state; if the number does not reach the preset number, when the length of time the compressor is stopped reaches a second preset length of time, the next detection is performed after restarting. In this way, it is possible to accurately detect whether the stop valve is open, and when the stop valve is not open, the compressor is controlled to stop, thereby preventing damage caused by non-circulation of refrigerant and high system pressure, thereby improving the safety of compressor operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] The disclosure of the present invention will become more easily understood with reference to the accompanying drawings. It will be readily understood by those skilled in the art that these drawings are only for illustrative purposes and are not intended to limit the scope of protection of the present invention. In addition, similar numbers in the drawings represent similar components, wherein:

[0035] Figure 1 1 is a flow chart of main steps of a method for monitoring a stop valve according to an embodiment of the present invention;

[0036] Figure 2 is a schematic flow chart of main steps of a method for monitoring a stop valve according to another embodiment of the present invention;

[0037] Figure 3 : is a main structural block diagram of a stop valve monitoring device according to an embodiment of the present invention

[0038] Figure 4 1 is a main structural block diagram of a stop valve monitoring device according to an embodiment of the present invention. DETAILED DESCRIPTION

[0039] Some embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only used to explain the technical principles of the present invention and are not intended to limit the protection scope of the present invention.

[0040] In the description of the present invention, "module" and "processor" may include hardware, software or a combination of the two. A module may include hardware circuits, various suitable sensors, communication ports, and memories, and may also include software parts, such as program codes, or a combination of software and hardware. The processor may be a central processing unit, a microprocessor, an image processor, a digital signal processor, or any other suitable processor. The processor has data and / or signal processing functions. The processor may be implemented in software, hardware, or a combination of the two. Non-temporary computer-readable storage media include any suitable medium that can store program codes, such as a magnetic disk, a hard disk, an optical disk, a flash memory, a read-only memory, a random access memory, and the like. The term "A and / or B" means all possible combinations of A and B, such as only A, only B, or A and B. The term "at least one A or B" or "at least one of A and B" has a similar meaning to "A and / or B", and may include only A, only B, or A and B. The singular terms "one" and "the" may also include plural forms.

[0041] The split air conditioner consists of an indoor unit and an outdoor unit. When the construction team installs the unit for trial operation, they sometimes forget to open the stop valve. If the stop valve is not opened, the refrigerant will not circulate after the air conditioner is powered on, the system pressure will be high, and it is easy to cause damage.

[0042] Therefore, in order to solve the above technical problems, the present invention provides the following technical solutions:

[0043] See attached Figure 1 , Figure 1 FIG. 1 is a flow chart showing the main steps of a method for monitoring a stop valve according to an embodiment of the present invention. Figure 1 As shown, the stop valve monitoring method in the embodiment of the present invention mainly includes the following steps 101 to 105.

[0044] Step 101, after the compressor of the air conditioner has been running for a first preset time, determining a first difference between a current temperature of an indoor unit coil in the air conditioner and a reference temperature of the indoor unit coil in a current operating mode of the air conditioner;

[0045] In a specific implementation process, after the air conditioner is installed or repaired, the air conditioner is put into trial operation. During the trial operation, after the compressor of the air conditioner has run for a first preset time (such as 5 minutes), the current temperature of the indoor coil in the air conditioner can be obtained, and the current temperature of the indoor coil in the air conditioner is subtracted from the reference temperature of the indoor coil in the current operating mode of the air conditioner to obtain the first difference between the current temperature of the indoor coil and the reference temperature of the indoor coil in the current operating mode of the air conditioner.

[0046] In a specific implementation process, if the current operation mode of the air conditioner is the heating mode, the first sampling temperature of the coil can be used as the reference temperature of the indoor unit coil. Specifically, when the air conditioner is in the heating mode, after the air conditioner receives the start command, the indoor fan will not run to prevent cold air from blowing into the room and affecting the user experience. Therefore, the first sampling temperature of the coil can be used as the reference temperature of the indoor unit coil.

[0047] In a specific implementation process, if the current operation mode of the air conditioner is cooling mode or dehumidification mode, the indoor unit can be controlled to run for the fourth preset time (2 minutes), and the lowest temperature of the indoor unit coil collected within the fourth preset time is used as the reference temperature of the indoor unit coil. Specifically, when the air conditioner is in cooling mode or dehumidification mode, after the air conditioner receives the start command, the indoor fan runs directly. In order to accurately detect the opening and closing status of the stop valve, the indoor unit can be controlled to run for the fourth preset time, and the temperature of the indoor unit coil is periodically sampled to obtain the temperature values ​​of multiple indoor unit coils, and the lowest temperature of the indoor unit coil collected within the fourth preset time is used as the reference temperature of the indoor unit coil.

[0048] Step 102: If the first difference is less than a first preset difference corresponding to the current operation mode of the air conditioner, the compressor is controlled to stop, and the number of times the first difference is less than the first preset difference is increased by 1;

[0049] In a specific implementation process, if the first difference is smaller than the first preset difference corresponding to the current operating mode of the air conditioner, it means that the stop valve may not be opened. At this time, the compressor can be controlled to shut down and the stop valve can be protected. However, occasionally the first difference is smaller than the first preset difference corresponding to the current operating mode of the air conditioner, and it cannot be confirmed that the stop valve is not opened. Therefore, the number of times the first difference is smaller than the first preset difference can be increased by 1.

[0050] In a specific implementation process, when the current operation mode of the air conditioner is the cooling mode or the dehumidification mode, the first preset difference may be 1° C. When the current operation mode of the air conditioner is the heating mode, the first preset difference may be 2° C.

[0051] Step 103, detecting whether the number of times reaches a preset number; if so, executing step 104, if not, executing step 105;

[0052] Step 104, determining that the stop valve is not opened, and maintaining the compressor in a shutdown state;

[0053] In a specific implementation process, if the number reaches a preset number, it can be clearly determined that the phenomenon is caused by the stop valve not being opened. At this time, it can be determined that the stop valve is not opened, the compressor is kept in a stopped state, and a fault code can be displayed, so that the air conditioner can perform the stop valve protection function to prevent the refrigerant from not circulating after the air conditioner is powered on, and the system pressure is high, which is easy to cause damage. In a specific implementation process, the preset number can be 3 times.

[0054] Step 105: When the compressor is shut down for a second preset time, restart the compressor and then perform the next detection.

[0055] In a specific implementation process, if the number of times does not reach the preset number of times, it means that the first difference may be less than the first preset difference corresponding to the current operation mode of the air conditioner due to other reasons, and when the compressor is stopped for a second preset time, the next detection can be performed after restarting. The second preset time is the preset minimum compressor stop time.

[0056] The monitoring method of the stop valve of the present embodiment determines the first difference between the current temperature of the indoor coil in the air conditioner and the reference temperature of the indoor coil in the current operating mode of the air conditioner after the compressor of the air conditioner has been running for a first preset time; if the first difference is less than the first preset difference corresponding to the current operating mode of the air conditioner, the compressor is controlled to stop, and the number of times the first difference is less than the first preset difference is increased by 1; if the number reaches the preset number, it is determined that the stop valve is not opened, and the compressor is maintained in a stopped state; if the number does not reach the preset number, when the length of time the compressor is stopped reaches a second preset length of time, the next detection is performed after restarting, so that it can accurately detect whether the stop valve is open, and when the stop valve is not open, the compressor is controlled to stop, so as to prevent the phenomenon that the refrigerant does not circulate and the system pressure is high, which is easy to cause damage, thereby improving the safety of the compressor operation.

[0057] See attached Figure 2 , Figure 2 FIG. 1 is a flow chart showing the main steps of a method for monitoring a stop valve according to another embodiment of the present invention. Figure 2 As shown, the stop valve monitoring method in the embodiment of the present invention mainly includes the following steps 201 to 210.

[0058] Step 201, after the compressor of the air conditioner has been running for a first preset time, determining a first difference between a current temperature of an indoor unit coil in the air conditioner and a reference temperature of the indoor unit coil in a current operating mode of the air conditioner;

[0059] Step 202, detecting whether the first difference is less than a first preset difference corresponding to the current operation mode of the air conditioner; if so, executing step 203; if not, executing step 207;

[0060] Step 203, controlling the compressor to stop, and adding 1 to the number of times that the first difference is less than the first preset difference;

[0061] If the first difference is smaller than the first preset difference corresponding to the current operating mode of the air conditioner, in order to prevent high system pressure due to the stop valve not being opened and the refrigerant not circulating, the compressor can be controlled to shut down and the number of times the first difference is smaller than the first preset difference can be increased by 1.

[0062] Step 204, detecting whether the number of times reaches a preset number of times; if so, executing step 205, if not, executing step 206;

[0063] Step 205, determining that the stop valve is not opened, and maintaining the compressor in a shutdown state;

[0064] Step 206: When the compressor is shut down for a second preset time, restart the compressor and then perform the next detection.

[0065] Step 207, obtaining the return air temperature of the indoor unit;

[0066] If the difference is greater than or equal to the first preset difference corresponding to the current operating mode of the air conditioner, the return air temperature of the indoor unit can be obtained, and the second difference between the current temperature of the indoor unit coil and the return air temperature of the indoor unit can be calculated, and the second difference can be compared with the second preset difference (5°C).

[0067] Step 208: When the second difference between the current temperature of the indoor unit coil and the return air temperature of the indoor unit is greater than the second preset difference, start timing to obtain a first accumulated timing duration when the second difference is greater than the second preset difference in the current operation mode of the air conditioner;

[0068] In a specific implementation process, when the second difference between the current temperature of the indoor unit coil and the return air temperature of the indoor unit is greater than the second preset difference, timing starts to obtain the first accumulated timing duration when the second difference is greater than the second preset difference in the current operating mode of the air conditioner.

[0069] Step 209, determining the sum of the first accumulated timing duration and the second accumulated timing duration in other operating modes of the air conditioner;

[0070] In a specific implementation process, the sum of the first accumulated timing duration and the second accumulated duration in other operating modes of the air conditioner can be calculated, and the sum can be compared with the third preset duration (24h) to obtain a comparison result.

[0071] Step 210: If the sum is greater than or equal to a third preset time, it is determined that the stop valve is opened, and / or the stop valve protection control function is disabled until it is detected that the air conditioner is tested again, and then the stop valve protection function is turned on.

[0072] In a specific implementation process, if the sum is greater than or equal to a third preset time length, it is determined that the stop valve is opened, and / or the stop valve protection control function is disabled until it is detected that the air conditioner is being tested again, and then the stop valve protection function is turned on.

[0073] Specifically, when the accumulated timing duration in all air-conditioning operation modes is greater than or equal to the third preset duration, it indicates that the stop valve has been opened. In the absence of machine relocation, maintenance, etc., the stop valve is usually not closed. Therefore, it can be determined that the stop valve has been opened, and / or the stop valve protection control function is disabled. However, if the air conditioner is relocated, repaired, etc., after the air conditioner is powered on again, it is equivalent to the first power-on, and the air conditioner will be tested again. At this time, the stop valve protection function will be turned on again.

[0074] It should be pointed out that although the various steps in the above embodiments are described in a specific order, those skilled in the art can understand that in order to achieve the effects of the present invention, different steps do not have to be performed in such an order. They can be performed simultaneously (in parallel) or in other orders. These changes are within the scope of protection of the present invention.

[0075] It is understood by those skilled in the art that the present invention implements all or part of the processes in the method of the above embodiment, and can also be completed by instructing the relevant hardware through a computer program, and the computer program can be stored in a computer-readable storage medium, and the computer program can implement the steps of the above-mentioned various method embodiments when executed by the processor. Among them, the computer program includes computer program code, and the computer program code can be in source code form, object code form, executable file or some intermediate form. The computer-readable storage medium may include: any entity or device, medium, U disk, mobile hard disk, disk, optical disk, computer memory, read-only memory, random access memory, electric carrier signal, telecommunication signal and software distribution medium that can carry the computer program code. It should be noted that the content contained in the computer-readable storage medium can be appropriately increased or decreased according to the requirements of legislation and patent practice in the jurisdiction. For example, in some jurisdictions, according to legislation and patent practice, computer-readable storage media do not include electric carrier signals and telecommunication signals.

[0076] Furthermore, the present invention also provides a monitoring device for a stop valve.

[0077] See attached Figure 3 , Figure 3 FIG. 1 is a main structural block diagram of a monitoring device for a stop valve according to an embodiment of the present invention. Figure 3 As shown, the monitoring device for the stop valve in the embodiment of the present invention may include a determination module 31 and a control module 32 .

[0078] A determination module 31, configured to determine a first difference between a current temperature of an indoor unit coil in the air conditioner and a reference temperature of the indoor unit coil in a current operation mode of the air conditioner after the compressor of the air conditioner has been running for a first preset time;

[0079] In a specific implementation process, if the current operation mode of the air conditioner is the heating mode, the first sampling temperature of the indoor unit coil is used as the reference temperature of the indoor unit coil.

[0080] In a specific implementation process, if the current operating mode of the air conditioner is cooling mode or dehumidification mode, the indoor unit is controlled to operate for a fourth preset time, and the lowest temperature of the indoor unit coil collected within the fourth preset time is used as the reference temperature of the indoor unit coil.

[0081] The control module 32 is used to control the compressor to stop if the first difference is less than the first preset difference corresponding to the current operating mode of the air conditioner, and add 1 to the number of times the first difference is less than the first preset difference; if the number reaches the preset number, it is determined that the stop valve is not opened and the compressor is maintained in the stopped state; if the number does not reach the preset number, when the length of time the compressor is stopped reaches a second preset length of time, the next detection is performed after restarting.

[0082] In a specific implementation process, the control module 32 is further used to obtain the return air temperature of the indoor unit if the difference is greater than or equal to a first preset difference corresponding to the current operation mode of the air conditioner;

[0083] When the second difference between the current temperature of the indoor unit coil and the return air temperature of the indoor unit is greater than the second preset difference, start timing to obtain a first accumulated timing duration when the second difference is greater than the second preset difference in the current operation mode of the air conditioner;

[0084] Determine the sum of the first accumulated timing duration and the second accumulated timing duration in other operating modes of the air conditioner;

[0085] If the sum is greater than or equal to the third preset time length, it is determined that the stop valve is opened, and / or the stop valve protection control function is disabled until it is detected that the air conditioner is being tested again, and then the stop valve protection function is turned on.

[0086] The above-mentioned stop valve monitoring device is used to execute the stop valve monitoring method embodiment shown in the above-mentioned embodiment. The technical principles, technical problems solved and technical effects produced by the two are similar. Technical personnel in this technical field can clearly understand that for the convenience and conciseness of description, the specific working process and related instructions of the stop valve monitoring device can refer to the contents described in the embodiment of the stop valve monitoring method, which will not be repeated here.

[0087] Furthermore, the present invention also provides a monitoring device for a stop valve.

[0088] See attached Figure 4 , Figure 4 FIG. 1 is a main structural block diagram of a monitoring device for a stop valve according to an embodiment of the present invention. Figure 4 As shown, the monitoring device for the stop valve in the embodiment of the present invention may include a processor 41 and a storage device 42 .

[0089] The storage device 42 may be configured to store a program for executing the method for monitoring the stop valve of the above method embodiment, and the processor 41 may be configured to execute the program in the storage device 42, which includes but is not limited to the program for executing the method for monitoring the stop valve of the above method embodiment. For ease of explanation, only the part related to the embodiment of the present invention is shown, and for specific technical details not disclosed, please refer to the method part of the embodiment of the present invention. The monitoring device of the stop valve may be a control device formed by various electronic devices.

[0090] In a specific implementation process, the number of the storage device 42 and the processor 41 can be multiple. The program for executing the stop valve monitoring method of the above method embodiment can be divided into multiple subprograms, and each subprogram can be loaded and run by the processor 41 to execute different steps of the stop valve monitoring method of the above method embodiment. Specifically, each subprogram can be stored in different storage devices 42, and each processor 41 can be configured to execute the program in one or more storage devices 42 to jointly implement the stop valve monitoring method of the above method embodiment, that is, each processor 41 executes different steps of the stop valve monitoring method of the above method embodiment to jointly implement the stop valve monitoring method of the above method embodiment.

[0091] The above-mentioned multiple processors 41 may be processors deployed on the same device. For example, the above-mentioned device may be a high-performance device composed of multiple processors, and the above-mentioned multiple processors 41 may be processors configured on the high-performance device. In addition, the above-mentioned multiple processors 41 may also be processors deployed on different devices. For example, the above-mentioned device may be a server cluster, and the above-mentioned multiple processors 41 may be processors on different servers in the server cluster.

[0092] Furthermore, the present invention also provides an air conditioner, which includes the monitoring device of the stop valve as described above.

[0093] Furthermore, the present invention also provides a computer-readable storage medium. In a computer-readable storage medium embodiment according to the present invention, the computer-readable storage medium can be configured to store a program for executing the method for monitoring the stop valve of the above method embodiment, and the program can be loaded and run by the processor to implement the above stop valve monitoring method. For ease of explanation, only the parts related to the embodiment of the present invention are shown. For specific technical details not disclosed, please refer to the method part of the embodiment of the present invention. The computer-readable storage medium can be a storage device formed by various electronic devices. Optionally, the computer-readable storage medium in the embodiment of the present invention is a non-temporary computer-readable storage medium.

[0094] Further, it should be understood that since the setting of each module is only for illustrating the functional units of the device of the present invention, the physical devices corresponding to these modules may be the processor itself, or a part of the software in the processor, a part of the hardware, or a part of the combination of software and hardware. Therefore, the number of each module in the figure is only schematic.

[0095] Those skilled in the art will appreciate that the modules in the device can be adaptively split or merged. Such splitting or merging of specific modules will not cause the technical solution to deviate from the principle of the present invention, and therefore, the technical solutions after splitting or merging will fall within the protection scope of the present invention.

[0096] So far, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

Claims

1. A method for monitoring a stop valve, characterized in that: include: After the compressor of the air conditioner has been running for a first preset time, determining a first difference between a current temperature of an indoor unit coil in the air conditioner and a reference temperature of the indoor unit coil in a current operating mode of the air conditioner; If the first difference is less than a first preset difference corresponding to the current operation mode of the air conditioner, the compressor is controlled to stop, and the number of times the first difference is less than the first preset difference is increased by 1; If the number of times reaches the preset number of times, it is determined that the stop valve is not opened, and the compressor is kept in a stopped state; If the number of times does not reach the preset number of times, when the compressor is shut down for a second preset time, the compressor is restarted and then the next detection is performed.

2. The method for monitoring a stop valve according to claim 1, characterized in that: Also includes: If the difference is greater than or equal to a first preset difference corresponding to the current operation mode of the air conditioner, the return air temperature of the indoor unit is obtained; When the second difference between the current temperature of the indoor unit coil and the return air temperature of the indoor unit is greater than the second preset difference, start timing to obtain a first accumulated timing duration when the second difference is greater than the second preset difference in the current operation mode of the air conditioner; Determine the sum of the first accumulated timing duration and the second accumulated timing duration in other operating modes of the air conditioner; If the sum is greater than or equal to the third preset time length, it is determined that the stop valve is opened.

3. The method for monitoring a stop valve according to claim 2, characterized in that: Also includes: If the sum is greater than or equal to the third preset time length, the stop valve protection control function is disabled until it is detected that the air conditioner is being tested again, and then the stop valve protection function is enabled.

4. The method for monitoring a stop valve according to claim 1, characterized in that: Before determining a first difference between a current temperature of an indoor coil of the air conditioner and a reference temperature of the indoor coil in a current operation mode of the air conditioner, the method further includes: If the current operation mode of the air conditioner is the heating mode, the first sampling temperature of the indoor unit coil is used as the reference temperature of the indoor unit coil.

5. The method for monitoring a stop valve according to claim 1, characterized in that: Before determining a first difference between a current temperature of an indoor coil of the air conditioner and a reference temperature of the indoor coil in a current operation mode of the air conditioner, the method further includes: If the current operation mode of the air conditioner is the cooling mode or the dehumidification mode, the indoor unit is controlled to operate for a fourth preset time period, and the lowest temperature of the indoor unit coil collected within the fourth preset time period is used as the reference temperature of the indoor unit coil.

6. A stop valve monitoring device, characterized in that: include: a determination module, configured to determine a first difference between a current temperature of an indoor unit coil in the air conditioner and a reference temperature of the indoor unit coil in a current operation mode of the air conditioner after the compressor of the air conditioner has been running for a first preset time; The control module is used to control the compressor to stop if the first difference is less than a first preset difference corresponding to the current operating mode of the air conditioner, and add 1 to the number of times the first difference is less than the first preset difference; if the number reaches the preset number, it is determined that the stop valve is not opened and the compressor is maintained in the stopped state; if the number does not reach the preset number, when the length of time the compressor is stopped reaches a second preset length of time, the next detection is performed after restarting.

7. The stop valve monitoring device according to claim 6, characterized in that: The control module is also used to: If the difference is greater than or equal to a first preset difference corresponding to the current operation mode of the air conditioner, the return air temperature of the indoor unit is obtained; When the second difference between the current temperature of the indoor unit coil and the return air temperature of the indoor unit is greater than the second preset difference, start timing to obtain a first accumulated timing duration when the second difference is greater than the second preset difference in the current operation mode of the air conditioner; Determine the sum of the first accumulated timing duration and the second accumulated timing duration in other operating modes of the air conditioner; If the sum is greater than or equal to the third preset time length, it is determined that the stop valve is opened.

8. A stop valve monitoring device, characterized in that: The method comprises a processor and a storage device, wherein the storage device is suitable for storing a plurality of program codes, and the program codes are suitable for being loaded and run by the processor to execute the method for monitoring a stop valve according to any one of claims 1 to 5.

9. An air conditioner, characterized in that: A monitoring device comprising a stop valve as claimed in claim 8.

10. A computer-readable storage medium, characterized in that: A plurality of program codes are stored therein, and the program codes are suitable for being loaded and run by a processor to execute the monitoring method of a stop valve according to any one of claims 1 to 5.

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