Compressor shutdown control method and device, storage medium and air conditioner

Abstract

The invention relates to a compressor shutdown control method and device, a storage medium and an air conditioner, and the method comprises the steps that in response to a received shutdown instruction, the outer ring temperature and the operation frequency of a compressor of the air conditioner are obtained; determining a target frequency corresponding to the outer ring temperature; when the operation frequency is greater than or equal to the target frequency, reducing the operation frequency to the target frequency according to a plurality of preset frequency reduction rates; and controlling the compressor to stop based on the reduced operation frequency.

Description

Technical Field

[0001] The present disclosure relates to the technical field of compressors, and in particular, to a method, device, storage medium, and air conditioner for controlling the shutdown of a compressor. Background Art

[0002] Air conditioners are widely used in people's work and life to provide a comfortable living environment. A compressor is one of the core components of the refrigeration cycle system of an air conditioner, providing the power source for the refrigeration system.

[0003] When the air conditioner operates at high load, the compressor runs at high frequency, and the load of the refrigeration system is relatively large. If the operation of the compressor is directly stopped at this time, it will cause a large impact force, resulting in severe vibration of the connecting pipeline between the compressor and the indoor fan of the air conditioner, reducing the service life of the pipeline. At the same time, the vibration will generate a large amount of noise, affecting the user experience. Summary of the Invention

[0004] To overcome the problems existing in the related art, the present disclosure provides a method, device, storage medium, and air conditioner for controlling the shutdown of a compressor.

[0005] According to a first aspect of an embodiment of the present disclosure, a method for controlling the shutdown of a compressor is provided, including:

[0006] In response to receiving a shutdown instruction, obtaining the outer ring temperature and operating frequency of the compressor of the air conditioner; determining the target frequency corresponding to the outer ring temperature; when the operating frequency is greater than or equal to the target frequency, reducing the operating frequency to the target frequency at multiple preset frequency reduction rates; and controlling the shutdown of the compressor based on the reduced operating frequency.

[0007] Optionally, the determining the target frequency corresponding to the outer ring temperature includes: determining the target temperature range in which the outer ring temperature is located from multiple preset temperature ranges; and determining the target frequency corresponding to the target temperature range through a preset frequency correspondence relationship, where the preset frequency correspondence relationship includes the frequencies of the compressor corresponding to different preset temperature ranges.

[0008] Optionally, the reducing the operating frequency to the target frequency at multiple preset frequency reduction rates includes: repeatedly executing a frequency reduction step until the operating frequency is reduced to the target frequency; the frequency reduction step includes: determining the target frequency reduction rate corresponding to the operating frequency from multiple preset frequency reduction rates; reducing the operating frequency at the target frequency reduction rate; and using the reduced operating frequency as the new operating frequency.

[0009] Optionally, determining the target frequency reduction rate corresponding to the operating frequency from the multiple preset frequency reduction rates includes: determining the target frequency range in which the operating frequency is located from the multiple preset frequency ranges; determining the target frequency reduction rate corresponding to the target frequency range from the multiple preset frequency reduction rates through a preset rate correspondence; the preset rate correspondence includes the preset frequency reduction rates corresponding to different preset frequency ranges.

[0010] Optionally, the method further includes: adjusting the opening degree value of the expansion valve of the air conditioner to a specified opening degree value.

[0011] Optionally, controlling the compressor to stop based on the reduced operating frequency includes: when controlling the compressor to operate at the reduced operating frequency for a preset duration, obtaining the rotor position of the compressor; when the rotor position reaches a specified position, controlling the compressor to stop.

[0012] Optionally, the method further includes: when the operating frequency is less than the target frequency, controlling the compressor to operate at the operating frequency for a preset duration; when the operating duration of controlling the compressor to operate at the operating frequency reaches the preset duration, obtaining the rotor position of the compressor; when the rotor position reaches a specified position, controlling the compressor to stop.

[0013] Optionally, responding to receiving a stop instruction and obtaining the outer ring temperature and operating frequency of the compressor of the air conditioner includes: responding to receiving a stop instruction, determining the stop condition corresponding to the stop instruction; when the stop condition is a specified stop condition, obtaining the outer ring temperature and operating frequency of the compressor.

[0014] Optionally, the specified stop condition includes: a stop triggered by a user; or, the indoor temperature reaches a preset temperature threshold; or, the air conditioner fails and the failure is a non-specified type of failure, and the specified type of failure is a control failure of the compressor.

[0015] Optionally, the method further includes: when the stop condition is a non-specified stop condition, controlling the compressor to stop.

[0016] According to a second aspect of the embodiments of the present disclosure, there is provided a device for controlling a compressor to stop, including:

[0017] An obtaining module, configured to respond to receiving a stop instruction and obtain the outer ring temperature and operating frequency of the compressor of the air conditioner;

[0018] A determining module, configured to determine the target frequency corresponding to the outer ring temperature;

[0019] A control module, configured to, when the operating frequency is greater than or equal to the target frequency, reduce the operating frequency to the target frequency at a plurality of preset frequency reduction rates;

[0020] A shutdown module, configured to control the compressor to shut down based on the reduced operating frequency.

[0021] Optionally, the determination module is configured to determine the target temperature range in which the outer ring temperature is located from a plurality of preset temperature ranges; and determine the target frequency corresponding to the target temperature range through a preset frequency correspondence, where the preset frequency correspondence includes the frequencies of the compressor corresponding to different preset temperature ranges.

[0022] Optionally, the control module is configured to repeatedly execute the frequency reduction step until the operating frequency is reduced to the target frequency; the frequency reduction step includes: determining the target frequency reduction rate corresponding to the operating frequency from a plurality of preset frequency reduction rates; reducing the operating frequency at the target frequency reduction rate; and using the reduced operating frequency as the new operating frequency.

[0023] Optionally, the control module is configured to determine the target frequency range in which the operating frequency is located from a plurality of preset frequency ranges; and determine the target frequency reduction rate corresponding to the target frequency range through a preset rate correspondence, where the preset rate correspondence includes the preset frequency reduction rates corresponding to different preset frequency ranges.

[0024] Optionally, the device further includes:

[0025] An opening value adjustment module, configured to adjust the opening value of the expansion valve of the air conditioner to a specified opening value.

[0026] Optionally, the shutdown module is configured to, when the compressor is controlled to operate at the reduced operating frequency for a preset duration, obtain the rotor position of the compressor; and control the compressor to shut down when the rotor position reaches a specified position.

[0027] Optionally, the shutdown module is further configured to, when the operating frequency is less than the target frequency, control the compressor to operate at the operating frequency for a preset duration; obtain the rotor position of the compressor when the operating duration of the compressor operating at the operating frequency reaches the preset duration; and control the compressor to shut down when the rotor position reaches a specified position.

[0028] Optionally, the acquisition module is configured to, in response to receiving a shutdown instruction, determine the shutdown condition corresponding to the shutdown instruction; and obtain the outer ring temperature and the operating frequency of the compressor when the shutdown condition is a specified shutdown condition.

[0029] Optionally, the specified shutdown condition includes: shutdown triggered by the user; or, the indoor temperature reaches a preset temperature threshold; or, the air conditioner fails and the failure is a non-specified type of failure, and the specified type of failure is a control failure of the compressor.

[0030] Optionally, the shutdown module is further configured to control the compressor to shut down when the shutdown condition is a non-specified shutdown condition.

[0031] According to a third aspect of the embodiments of the present disclosure, there is provided a device for controlling the shutdown of a compressor, including:

[0032] A processor;

[0033] A memory for storing instructions executable by the processor;

[0034] Wherein, the processor is configured to execute the method for controlling the shutdown of the compressor described in the first aspect above.

[0035] According to a fourth aspect of the embodiments of the present disclosure, there is provided a computer-readable storage medium, on which computer program instructions are stored, and when the program instructions are executed by a processor, the steps of the method for controlling the shutdown of the compressor provided in the first aspect of the present disclosure are implemented.

[0036] According to a fifth aspect of the embodiments of the present disclosure, there is provided an air conditioner, including the device for controlling the shutdown of the compressor described in the third aspect above.

[0037] The technical solutions provided by the embodiments of the present disclosure may include the following beneficial effects:

[0038] The present disclosure can, in response to receiving a shutdown instruction, obtain the outer ring temperature and operating frequency of the compressor of the air conditioner; determine the target frequency corresponding to the outer ring temperature; when the operating frequency is greater than or equal to the target frequency, reduce the operating frequency to the target frequency at multiple preset frequency reduction rates; based on the reduced operating frequency, control the compressor to shut down. In this way, it is possible to flexibly determine the target frequency according to the outdoor ambient temperature at which the compressor is working, and dynamically control the operating frequency of the compressor to be reduced to the target frequency at multiple preset frequency reduction rates, and then control the compressor to shut down, reducing the impact force when the compressor shuts down, reducing the vibration of the pipeline in the air conditioner during shutdown, extending the service life of the pipeline, reducing the noise generated during shutdown, and improving the user experience.

[0039] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit the present disclosure. Description of the Drawings

[0040] The accompanying drawings here are incorporated into the specification and form a part of this specification, showing embodiments consistent with the present disclosure, and are used together with the specification to explain the principles of the present disclosure.

[0041] Figure 1 is a flowchart of a method for controlling compressor shutdown according to an exemplary embodiment.

[0042] Figure 2 is a flowchart of another method for controlling compressor shutdown according to an exemplary embodiment.

[0043] Figure 3 is a block diagram of a device for controlling compressor shutdown according to an exemplary embodiment.

[0044] Figure 4 is a block diagram of another device for controlling compressor shutdown according to an exemplary embodiment.

[0045] Figure 5 is a block diagram of another device for controlling compressor shutdown according to an exemplary embodiment.

[0046] Figure 6 is a block diagram of an air conditioner according to an exemplary embodiment. Detailed Description of Specific Embodiments

[0047] Here, the exemplary embodiments will be described in detail, and the examples are shown in the accompanying drawings. When the following description refers to the accompanying drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present disclosure. On the contrary, they are merely examples of devices and methods consistent with some aspects of the present disclosure as detailed in the appended claims.

[0048] In the related art, in the case where it is necessary to control the compressor to shut down, the operating frequency of the compressor can be reduced to a fixed frequency, and after the operating frequency of the compressor is reduced to the fixed frequency, the compressor is controlled to stop running. However, since the stability of the compressor during shutdown at the fixed frequency may vary at different ambient temperatures, therefore, shutting down the compressor by reducing its operating frequency to the fixed frequency still causes a relatively large impact on the air conditioner pipeline during shutdown.

[0049] To solve the above problems, the present disclosure provides a method, a device, a storage medium, and an air conditioner for controlling the shutdown of a compressor. This method can flexibly determine a target frequency based on the outer ring temperature of the compressor (i.e., the outdoor ambient temperature where the outdoor fan of the air conditioner where the compressor is located), and dynamically control the operating frequency of the compressor to decrease from a high-load state to a low-load state at multiple preset frequency reduction rates, and then control the compressor to shut down. By using this method, the impact force during compressor shutdown can be reduced, the vibration of the pipeline in the air conditioner during shutdown can be alleviated, the service life of the pipeline can be extended, the noise generated during shutdown can be reduced, and thus the user experience can be improved.

[0050] The following describes the present disclosure in conjunction with specific embodiments.

[0051] Figure 1 is a flowchart of a method for controlling the shutdown of a compressor shown according to an exemplary embodiment. As Figure 1 shown, the execution subject of this method can be an air conditioner, and this method can include:

[0052] In step S11, in response to receiving a shutdown instruction, obtain the outer ring temperature and operating frequency of the compressor of the air conditioner.

[0053] Among them, the shutdown instruction is used to indicate stopping the compressor in the air conditioner. The operating frequency can be the current operating frequency of the compressor, and the outer ring temperature can be obtained through a temperature sensor on the outdoor fan of the air conditioner.

[0054] In some embodiments, in response to receiving a shutdown instruction, the shutdown condition corresponding to the shutdown instruction can be determined; in the case where the shutdown condition is a specified shutdown condition, obtain the outer ring temperature and operating frequency of the compressor.

[0055] Among them, the shutdown condition can characterize the scenario that triggers the shutdown instruction. For example, the shutdown condition can include the following conditions:

[0056] 1. Shutdown triggered by the user.

[0057] Exemplarily, the shutdown triggered by the user can be that the user sends a shutdown instruction to the air conditioner through a device such as a remote control that can control the air conditioner, and the air conditioner controls the compressor to shut down in response to the shutdown instruction.

[0058] 2. The indoor temperature reaches a preset temperature threshold.

[0059] Exemplarily, the temperature sensor in the air conditioner detects that the indoor ambient temperature reaches the preset temperature threshold, triggers the shutdown instruction, and controls the compressor to shut down. Among them, the preset temperature threshold can be the desired temperature preset by the user. When the indoor ambient temperature reaches this desired temperature, it is necessary to stop refrigeration or heating.

[0060] 3. The air conditioner has a fault, and the fault is a specified type of fault.

[0061] Among them, the specified type of fault is a control fault of the compressor (i.e., a fault that cannot control the operation of the compressor).

[0062] 4. The air conditioner has a fault, and the fault is a non-specified type of fault.

[0063] Among them, the non-specified type of fault can be, for example, a fault such as a filter clogging or a fan falling off.

[0064] Correspondingly, the specified shutdown condition can include: shutdown triggered by the user; or, the indoor temperature reaches a preset temperature threshold; or, the air conditioner has a fault and the fault is a non-specified type of fault.

[0065] In step S12, determine the target frequency corresponding to the outer ring temperature.

[0066] In some embodiments, the target temperature range in which the outer ring temperature is located can be determined from multiple preset temperature ranges; through a preset frequency correspondence relationship, the target frequency corresponding to the target temperature range is determined, and the preset frequency correspondence relationship includes the frequencies of the compressor corresponding to different preset temperature ranges.

[0067] Exemplarily, the correspondence relationship between the outer ring temperature and the target frequency can be determined through a temperature range - frequency correspondence table. For example, the outer ring temperature T is divided into 3 preset temperature ranges, and different target frequencies F correspond to the preset temperature range in which the outer ring temperature T is located 目 , as shown in the following table:

[0068] Outer ring temperature T <![CDATA[T≤T2]]> <![CDATA[T2 < T < T1]]> <![CDATA[T≥T1]]> <![CDATA[Target frequency F 目 > <![CDATA[F 目3 > <![CDATA[F 目2 > <![CDATA[F 目1 >

[0069] Table 1

[0070] Referring to Table 1 above, when the outer ring temperature T of the compressor is ≤ T2, the target frequency F 目 is F 目3 ; when the outer ring temperature T2 < T < T1, the target frequency F 目 is F 目2 ; when the outer ring temperature T ≥ T1, the target frequency F 目 is F 目1 . In this way, the influence of the outer ring temperature on the compressor frequency can be considered, so that the obtained target frequency is more in line with the current working environment, and thus a more accurate target frequency can be obtained.

[0071] In step S13, when the operating frequency is greater than or equal to the target frequency, the operating frequency is reduced to the target frequency at multiple preset frequency reduction rates.

[0072] In a possible implementation, the multiple preset frequency reduction rates can respectively correspond to different preset frequency ranges. It is possible to determine the preset frequency range in which the operating frequency is located, and reduce the operating frequency according to the preset frequency reduction rate corresponding to the preset frequency range in which the operating frequency is located. As the operating frequency decreases, the preset frequency range in which the operating frequency is located may change. At this time, the operating frequency can be continuously reduced according to the preset frequency reduction rate corresponding to the changed preset frequency range, and so on, until it is reduced to the target frequency.

[0073] In step S14, based on the reduced operating frequency, control the compressor to stop.

[0074] Exemplarily, it is possible to control the compressor to operate at the reduced operating frequency for a specified duration, and when the compressor operates at the reduced operating frequency for the specified duration, control the compressor to stop.

[0075] Adopting the above solution, it is possible to flexibly determine the target frequency according to the outer ring temperature, control the operating frequency of the compressor to decrease from the high load state to the low load state at multiple preset frequency reduction rates, reduce the impact force when the compressor stops, reduce the vibration of the pipeline in the air conditioner when stopping, extend the service life of the pipeline, reduce the noise generated when stopping, and thus improve the user experience.

[0076] In some embodiments, the above step S13 may include:

[0077] Loop and execute the frequency reduction step until the operating frequency is reduced to the target frequency.

[0078] The above frequency reduction step includes:

[0079] Determine the target frequency reduction rate corresponding to the operating frequency from multiple preset frequency reduction rates.

[0080] In a possible implementation, it is possible to determine the target frequency range in which the operating frequency is located from multiple preset frequency ranges; determine the target frequency reduction rate corresponding to the target frequency range from multiple preset frequency reduction rates through a preset rate correspondence relationship; the preset rate correspondence relationship includes the preset frequency reduction rates corresponding to different preset frequency ranges.

[0081] Exemplarily, it is possible to determine the correspondence relationship between the operating frequency and the target frequency reduction rate through a frequency range and frequency reduction rate correspondence table. For example, the operating frequency is divided into 3 preset frequency ranges. Among them, the 3 preset frequency ranges are F 目 <F≤F2, F2<F≤F1, and F>F1. The preset frequency range in which the operating frequency is located corresponds to different target frequency reduction rates S, as shown in the following table:

[0082] Operating frequency F <![CDATA[F 目 <F ≤ F2]]> <![CDATA[F2<F≤F1]]> <![CDATA[F > F1]]> Target frequency reduction rate S <![CDATA[S3]]> <![CDATA[S2]]> <![CDATA[S1]]>

[0083] Table 2

[0084] Referring to Table 2 above, when the obtained operating frequency F > F1, the target frequency reduction rate S is the first target frequency reduction rate S1; when the operating frequency F2 < F ≤ F1, the target frequency reduction rate S is the second target frequency reduction rate S2; when the operating frequency F 目 < F ≤ F2, the target frequency reduction rate S is the third target frequency reduction rate S3. Among them, F1 is the preset first operating frequency, F2 is the preset second operating frequency, and F 目 is the target frequency. In this embodiment, it can be set that S3 > S2 > S1, thereby accelerating the rate of frequency decrease, increasing the speed of compressor shutdown, reducing the user's waiting time for shutdown, and further improving the user experience.

[0085] Reduce the operating frequency according to the target frequency reduction rate, and use the reduced operating frequency as the new operating frequency.

[0086] Exemplarily, taking Table 2 above as an example, when the operating frequency F is greater than the first operating frequency F1, the operating frequency F is decreased at the first target frequency reduction rate S1, and the decreased operating frequency is used as the new operating frequency. Then continue to determine the preset frequency range corresponding to the new operating frequency. When the new operating frequency F is greater than the second operating frequency F2 and less than or equal to the first operating frequency F1, the new operating frequency F is decreased at the second target frequency reduction rate S2, and the decreased operating frequency is still used as the new operating frequency, and so on, until the operating frequency is reduced to the target frequency F 目 . This can increase the speed of frequency decrease while maintaining a smooth decrease in frequency, reduce the waiting time required for shutdown, and thus improve the user experience.

[0087] In some embodiments, the opening value of the expansion valve of the air conditioner can also be adjusted to a specified opening value. This can quickly release the indoor and outdoor pressure difference, maintain the stable operation of the compressor, cooperate with the compressor to accelerate the completion of the frequency decrease step, reduce the shutdown vibration and shutdown time of the compressor, and further improve the user experience.

[0088] Exemplarily, the expansion valve can include an electronic expansion valve, and the specified opening value can be the maximum opening value of the expansion valve. For example, the expansion valve is adjusted from the current opening value to the maximum opening value.

[0089] In some embodiments, the above step S14 may include: obtaining the rotor position of the compressor when the compressor is controlled to operate at the reduced operating frequency for a preset duration; and controlling the compressor to stop when the rotor position reaches a specified position. In this way, by controlling the compressor to operate at the reduced operating frequency for a preset duration, the inertia caused by the change in the compressor frequency can be reduced, enabling the compressor to achieve smooth shutdown. For example, the preset duration can be set to 5 seconds. It should be noted that the preset duration here is for illustrative purposes only, and the present disclosure is not limited thereto.

[0090] In addition, the compressor performs functions such as suction, compression, and exhaust through the rotation of the rotor in the cylinder, and the rotor position may include the angle of rotation of the rotor. Exemplarily, when the rotor rotates to a preset angle, the compressor is controlled to stop. The preset angle can be determined according to factors such as the compressor model and the design of the refrigeration system pipeline. Stopping the rotor when it rotates to the preset angle can achieve the minimum shutdown vibration. For example, the rotor angle θ for the minimum shutdown vibration of compressor model A can be obtained through experimental testing and other methods, and θ is used as the preset angle and stored in the air conditioner memory.

[0091] In some other embodiments, when the operating frequency is less than the target frequency, the following steps may also be performed:

[0092] S1. Control the compressor to operate at the operating frequency for a preset duration.

[0093] S2. When the operating duration of controlling the compressor to operate at the operating frequency reaches the preset duration, obtain the rotor position of the compressor.

[0094] S3. Control the compressor to stop when the rotor position reaches a specified position.

[0095] Among them, if the operating frequency of the compressor is less than the target shutdown frequency, it means that the operating frequency of the compressor is relatively low at this time, and the compressor is operating in the low-load area, and the pressure borne by the air conditioner refrigeration cycle system is not high. Therefore, there is no need to reduce the operating frequency, and the compressor can be controlled to stop when the rotor position reaches a specified position.

[0096] In some other embodiments, the compressor may also be controlled to stop when the shutdown condition is a non-specified shutdown condition.

[0097] Among them, the non-specified shutdown condition may include that the air conditioner has a fault and the fault is a specified type of fault. In this way, when the air conditioner detects that the compressor has a specified type of fault, the compressor cannot be effectively controlled. Therefore, the compressor can be immediately stopped in the current operating state to avoid generating other faults.

[0098] Figure 2It is a flowchart of another method for controlling the shutdown of a compressor shown according to an exemplary embodiment, as Figure 2 shown. The method includes:

[0099] S201. Receive a shutdown instruction.

[0100] Among them, the shutdown instruction is used to indicate stopping the compressor in the air conditioner.

[0101] S202. Determine whether the shutdown condition corresponding to the shutdown instruction is a specified shutdown condition.

[0102] Among them, the specified shutdown condition may include: shutdown triggered by the user; or, the indoor temperature reaches a preset temperature threshold; or, the air conditioner fails and the failure is a non-specified type of failure.

[0103] If it is determined that the shutdown condition corresponding to the shutdown instruction is a specified shutdown condition, steps S204 to S208 are executed.

[0104] If it is determined that the shutdown condition corresponding to the shutdown instruction is a non-specified shutdown condition, step S203 is executed.

[0105] S203. Control the compressor to shut down.

[0106] S204. Adjust the opening value of the expansion valve of the air conditioner to a specified opening value.

[0107] Among them, the specified opening value may be the maximum opening value of the expansion valve.

[0108] S205. Obtain the outer ring temperature and operating frequency of the compressor.

[0109] S206. Determine the target temperature range where the outer ring temperature is located from multiple preset temperature ranges.

[0110] S207. Determine the target frequency corresponding to the target temperature range through a preset frequency correspondence.

[0111] Exemplarily, the correspondence between the outer ring temperature and the target frequency can be determined through a temperature range - frequency correspondence table.

[0112] S208. Determine whether the operating frequency is greater than or equal to the target frequency.

[0113] If it is determined that the operating frequency is greater than or equal to the target frequency, steps S210 to S214 are executed.

[0114] If it is determined that the operating frequency is less than the target frequency, steps S209 and S214 are executed.

[0115] S209. When the running duration of controlling the compressor to run at the running frequency reaches the preset duration, obtain the rotor position of the compressor.

[0116] Among them, the rotor position may include the angle of rotation of the rotor.

[0117] S210. Determine the target frequency range where the running frequency is located from multiple preset frequency ranges.

[0118] S211. From multiple preset frequency reduction rates, determine the target frequency reduction rate corresponding to the target frequency range through a preset rate correspondence.

[0119] Exemplarily, the correspondence between the running frequency and the target frequency reduction rate can be determined through a frequency range - frequency reduction rate correspondence table.

[0120] S212. Loop and execute the frequency reduction step until the running frequency is reduced to the target frequency.

[0121] Among them, the frequency reduction step may include determining the target frequency reduction rate corresponding to the running frequency from multiple preset frequency reduction rates, reducing the running frequency according to the target frequency reduction rate, and using the reduced running frequency as the new running frequency.

[0122] S213. When controlling the compressor to run at the reduced running frequency for a preset duration, obtain the rotor position of the compressor.

[0123] S214. When the rotor position reaches the specified position, control the compressor to stop.

[0124] Exemplarily, when the rotor rotates to the preset angle, control the compressor to stop.

[0125] Adopting the above - mentioned solution, the target frequency can be flexibly determined according to the outer - ring temperature, the running frequency of the compressor can be controlled to decrease from the high - load state to the low - load state according to multiple preset frequency reduction rates, the impact force during compressor shutdown can be reduced, the vibration of the pipeline in the air conditioner during shutdown can be alleviated, the service life of the pipeline can be extended, the noise generated during shutdown can be reduced, at the same time, the shutdown speed of the compressor can be increased, the waiting time for the user to wait for shutdown can be reduced, and the user experience can be improved.

[0126] It should be noted that for the specific implementation manners of the above - mentioned steps in the embodiments, reference can be made to the descriptions of the relevant steps in the foregoing embodiments, and details are not described herein again.

[0127] In addition, for the above method embodiments, for the sake of simple description, they are all expressed as a series of action combinations. However, those skilled in the art should be aware that the present invention is not limited by the described action sequence. For example, for the above step S204 and steps S205 to S207, they are not limited to the step sequence shown in the current embodiment. It is also possible to execute steps S205 to S207 first and then execute step S204, or execute step S204 and steps S205 to S207 simultaneously. Secondly, those skilled in the art should also be aware that the embodiments described in the specification are all preferred embodiments, and the actions and modules involved are not necessarily essential to the present invention.

[0128] Figure 3 is a block diagram of a device for controlling a compressor to stop according to an exemplary embodiment. Referring to Figure 3 , the device includes:

[0129] An acquisition module 301, configured to acquire the outer ring temperature and operating frequency of the compressor of the air conditioner in response to receiving a stop instruction;

[0130] A determination module 302, configured to determine the target frequency corresponding to the outer ring temperature;

[0131] A control module 303, configured to, when the operating frequency is greater than or equal to the target frequency, reduce the operating frequency to the target frequency at a plurality of preset frequency reduction rates;

[0132] A stop module 304, configured to control the compressor to stop based on the reduced operating frequency.

[0133] Optionally, the determination module 302 is configured to determine the target temperature range in which the outer ring temperature is located from a plurality of preset temperature ranges; and determine the target frequency corresponding to the target temperature range through a preset frequency correspondence relationship, where the preset frequency correspondence relationship includes the frequencies of the compressor corresponding to different preset temperature ranges.

[0134] Optionally, the control module 303 is configured to repeatedly execute the frequency reduction step until the operating frequency is reduced to the target frequency; the frequency reduction step includes: determining the target frequency reduction rate corresponding to the operating frequency from a plurality of preset frequency reduction rates; reducing the operating frequency at the target frequency reduction rate; and using the reduced operating frequency as the new operating frequency.

[0135] Optionally, the control module 303 is configured to determine the target frequency range in which the operating frequency is located from a plurality of preset frequency ranges; and determine the target frequency reduction rate corresponding to the target frequency range through a preset rate correspondence relationship from a plurality of preset frequency reduction rates; the preset rate correspondence relationship includes the preset frequency reduction rates corresponding to different preset frequency ranges.

[0136] Optionally, as Figure 4 shown, the device further includes:

[0137] An opening degree value adjustment module 305, configured to adjust the opening degree value of the expansion valve of the air conditioner to a specified opening degree value.

[0138] Optionally, the shutdown module 304 is configured to, when controlling the compressor to operate at a reduced operating frequency for a preset duration, obtain the rotor position of the compressor; and when the rotor position reaches a specified position, control the compressor to shut down.

[0139] Optionally, the shutdown module 304 is further configured to, when the operating frequency is less than the target frequency, control the compressor to operate at the operating frequency for a preset duration; when the operating duration of controlling the compressor to operate at the operating frequency reaches the preset duration, obtain the rotor position of the compressor; and when the rotor position reaches a specified position, control the compressor to shut down.

[0140] Optionally, the obtaining module 301 is configured to, in response to receiving a shutdown instruction, determine the shutdown working condition corresponding to the shutdown instruction; and when the shutdown working condition is a specified shutdown working condition, obtain the outer ring temperature and the operating frequency of the compressor.

[0141] Optionally, the specified shutdown working condition includes: shutdown triggered by a user; or, the indoor temperature reaches a preset temperature threshold; or, the air conditioner fails and the failure is a non-specified type of failure, and the specified type of failure is a control failure of the compressor.

[0142] Optionally, the shutdown module 304 is further configured to, when the shutdown working condition is a non-specified shutdown working condition, control the compressor to shut down.

[0143] By using the above device, the target frequency can be flexibly determined according to the outer ring temperature, the operating frequency of the compressor can be controlled to decrease from a high load state to a low load state at multiple preset frequency reduction rates, the impact force during compressor shutdown can be reduced, the vibration of the pipeline in the air conditioner during shutdown can be alleviated, the service life of the pipeline can be extended, the noise generated during shutdown can be reduced, at the same time, the shutdown speed of the compressor can be increased, the waiting time of the user for shutdown can be reduced, and the user experience can be improved.

[0144] Regarding the device in the above embodiments, the specific manners in which each module performs operations have been described in detail in the embodiments related to the method, and will not be elaborated here.

[0145] The present disclosure further provides a computer-readable storage medium, on which computer program instructions are stored, and when the program instructions are executed by a processor, the steps of the method for controlling compressor shutdown provided by the present disclosure are implemented.

[0146] Figure 5 is a block diagram of an apparatus 500 for compressor shutdown control shown in accordance with an exemplary embodiment. Referring to Figure 5 , the apparatus 500 may include one or more of the following components: a processing component 502, a memory 504, a power component 506, a multimedia component 508, an audio component 510, an input / output interface 512, a sensor component 514, and a communication component 516.

[0147] The processing component 502 generally controls the overall operation of the apparatus 500, such as operations associated with display, telephone calls, data communications, camera operations, and recording operations. The processing component 502 may include one or more processors 520 to execute instructions to complete all or part of the steps of the method for compressor shutdown control described above. In addition, the processing component 502 may include one or more modules to facilitate interaction between the processing component 502 and other components. For example, the processing component 502 may include a multimedia module to facilitate interaction between the multimedia component 508 and the processing component 502.

[0148] The memory 504 is configured to store various types of data to support the operation of the apparatus 500. Examples of such data include instructions for any application or method operating on the apparatus 500, contact data, phone book data, messages, pictures, videos, and the like. The memory 504 may be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, a magnetic disk, or an optical disk.

[0149] The power component 506 provides power to the various components of the apparatus 500. The power component 506 may include a power management system, one or more power supplies, and other components associated with generating, managing, and distributing power for the apparatus 500.

[0150] The multimedia component 508 includes a screen that provides an output interface between the device 500 and the user. In some embodiments, the screen may include a liquid crystal display (LCD) and a touch panel (TP). If the screen includes a touch panel, the screen can be implemented as a touch screen to receive input signals from the user. The touch panel includes one or more touch sensors to sense touches, swipes, and gestures on the touch panel. The touch sensors can sense not only the boundaries of the touch or swipe actions but also detect the duration and pressure associated with the touch or swipe operation. In some embodiments, the multimedia component 508 includes a front camera and / or a rear camera. When the device 500 is in an operating mode, such as a shooting mode or a video mode, the front camera and / or the rear camera can receive external multimedia data. Each of the front camera and the rear camera can be a fixed optical lens system or have a focal length and optical zoom capabilities.

[0151] The audio component 510 is configured to output and / or input audio signals. For example, the audio component 510 includes a microphone (MIC) that is configured to receive external audio signals when the device 500 is in an operating mode, such as a call mode, a recording mode, and a voice recognition mode. The received audio signals can be further stored in the memory 504 or transmitted via the communication component 516. In some embodiments, the audio component 510 further includes a speaker for outputting audio signals.

[0152] The input / output interface 512 provides an interface between the processing component 502 and a peripheral interface module, which can be a keyboard, a click wheel, buttons, etc. These buttons can include but are not limited to: a home button, a volume button, a power button, and a lock button.

[0153] The sensor component 514 includes one or more sensors for providing an assessment of the various aspects of the state of the device 500. For example, the sensor component 514 can detect the on / off state of the device 500, the relative positioning of components, such as the display and the keypad of the device 500. The sensor component 514 can also detect a change in the position of the device 500 or a component of the device 500, the presence or absence of user contact with the device 500, the orientation or acceleration / deceleration of the device 500, and the temperature change of the device 500. The sensor component 514 can include a proximity sensor configured to detect the presence of nearby objects without any physical contact. The sensor component 514 can also include a light sensor, such as a CMOS or a CCD image sensor, for use in imaging applications. In some embodiments, the sensor component 514 can further include an acceleration sensor, a gyroscope sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.

[0154] The communication component 516 is configured to facilitate communication between the device 500 and other devices in a wired or wireless manner. The device 500 can access a communication standard-based wireless network, such as WiFi, 2G, or 3G, or a combination thereof. In an exemplary embodiment, the communication component 516 receives a broadcast signal or broadcast-related information from an external broadcast management system via a broadcast channel. In an exemplary embodiment, the communication component 516 further includes a Near Field Communication (NFC) module to facilitate short-range communication. For example, the NFC module can be implemented based on Radio Frequency Identification (RFID) technology, Infrared Data Association (IrDA) technology, Ultra Wideband (UWB) technology, Bluetooth (BT) technology, and other technologies.

[0155] In an exemplary embodiment, the device 500 can be implemented by one or more Application Specific Integrated Circuits (ASICs), Digital Signal Processors (DSPs), Digital Signal Processing Devices (DSPDs), Programmable Logic Devices (PLDs), Field Programmable Gate Arrays (FPGAs), controllers, microcontrollers, microprocessors, or other electronic components for performing the method of compressor shutdown control described above.

[0156] In an exemplary embodiment, a non-transitory computer-readable storage medium including instructions is also provided, such as a memory 504 including instructions, and the above instructions can be executed by a processor 520 of the device 500 to complete the method of compressor shutdown control described above. For example, the non-transitory computer-readable storage medium can be a ROM, Random Access Memory (RAM), CD-ROM, magnetic tape, floppy disk, and optical data storage device, etc.

[0157] In another exemplary embodiment, a computer program product is also provided, and the computer program product includes a computer program executable by a programmable device, and the computer program has a code portion for performing the method of compressor shutdown control described above when executed by the programmable device.

[0158] Figure 6 is a block diagram of an air conditioner 600 shown according to an exemplary embodiment, as Figure 6 shown, and the air conditioner includes the device 500 for compressor shutdown control shown above Figure 5 shown.

[0159] Those skilled in the art will readily conceive of other embodiments of the present disclosure after considering the specification and practicing the present disclosure. The present disclosure is intended to cover any variations, uses, or adaptations of the present disclosure, which follow the general principles of the present disclosure and include known common knowledge or conventional technical means in the technical field not disclosed in the present disclosure. The specification and embodiments are only regarded as exemplary, and the true scope and spirit of the present disclosure are pointed out by the following claims.

[0160] It should be understood that the present disclosure is not limited to the exact structures described above and shown in the drawings, and various modifications and changes can be made without departing from its scope. The scope of the present disclosure is limited only by the appended claims.

Claims

1. A method for controlling the shutdown of a compressor, characterized in that, The method includes: In response to receiving a shutdown instruction, obtaining the outer ring temperature and operating frequency of the compressor of the air conditioner; Determining the target frequency corresponding to the outer ring temperature; When the operating frequency is greater than or equal to the target frequency, reducing the operating frequency to the target frequency at multiple preset frequency reduction rates; Based on the reduced operating frequency, controlling the compressor to stop; 2. The method according to claim 1, characterized in that, The determining the target frequency corresponding to the outer ring temperature includes: Determining the target temperature range where the outer ring temperature is located from multiple preset temperature ranges; Determining the target frequency corresponding to the target temperature range through a preset frequency correspondence relationship, where the preset frequency correspondence relationship includes the frequencies of the compressor corresponding to different preset temperature ranges; 3. The method according to claim 1, wherein The reducing the operating frequency to the target frequency at multiple preset frequency reduction rates includes: Repeatedly executing the frequency reduction step until the operating frequency is reduced to the target frequency; the frequency reduction step includes: Determining the target frequency reduction rate corresponding to the operating frequency from multiple preset frequency reduction rates; Reducing the operating frequency at the target frequency reduction rate; Taking the reduced operating frequency as the new operating frequency; 4. The method according to claim 3, wherein The determining the target frequency reduction rate corresponding to the operating frequency from multiple preset frequency reduction rates includes: Determining the target frequency range where the operating frequency is located from multiple preset frequency ranges; Determining the target frequency reduction rate corresponding to the target frequency range from multiple preset frequency reduction rates through a preset rate correspondence relationship; the preset rate correspondence relationship includes the preset frequency reduction rates corresponding to different preset frequency ranges; 5. The method according to claim 1, wherein The method further includes: Adjusting the opening degree value of the expansion valve of the air conditioner to a specified opening degree value; 6. The method according to claim 1, characterized in that, The controlling the compressor to stop based on the reduced operating frequency includes: When controlling the compressor to operate at the reduced operating frequency for a preset duration, obtaining the rotor position of the compressor; When the rotor position reaches a specified position, controlling the compressor to stop; 7. The method according to claim 1, wherein The method further includes: When the operating frequency is less than the target frequency, controlling the compressor to operate at the operating frequency for a preset duration; When the operating duration of controlling the compressor to operate at the operating frequency reaches the preset duration, obtaining the rotor position of the compressor; When the rotor position reaches a specified position, controlling the compressor to stop; 8. The method according to any one of claims 1-7, characterized in that, The responding to receiving a shutdown instruction and obtaining the outer ring temperature and operating frequency of the compressor of the air conditioner includes: In response to receiving a shutdown instruction, determining the shutdown condition corresponding to the shutdown instruction; When the shutdown condition is a specified shutdown condition, obtaining the outer ring temperature and operating frequency of the compressor; 9. The method according to claim 8, characterized in that, The specified shutdown condition includes: Shutdown triggered by the user; or, The indoor temperature reaches a preset temperature threshold; or, The air conditioner fails and the failure is a non-specified type of failure, and the specified type of failure is a control failure of the compressor; 10. The method according to claim 8, wherein The method further includes: When the shutdown condition is a non-specified shutdown condition, controlling the compressor to stop; 11. A device for compressor shutdown control, characterized in that, The device includes: An acquisition module, configured to acquire the outer ring temperature and the operating frequency of the compressor of the air conditioner in response to receiving a shutdown instruction; A determination module, configured to determine a target frequency corresponding to the outer ring temperature; A control module, configured to, when the operating frequency is greater than or equal to the target frequency, reduce the operating frequency to the target frequency at a plurality of preset frequency reduction rates; A shutdown module, configured to control the compressor to shut down based on the reduced operating frequency.

12. A device for compressor shutdown control, characterized in that, Comprising: A processor; A memory for storing instructions executable by the processor; Wherein, the processor is configured to execute the method for controlling the shutdown of the compressor according to any one of claims 1 to 10.

13. A computer-readable storage medium having computer program instructions stored thereon, characterized in that, When the program instructions are executed by the processor, the steps of the method according to any one of claims 1 to 10 are implemented.

14. An air conditioner, characterized in that, Comprising the device for controlling the shutdown of the compressor according to claim 12 above.

Images