Air conditioner oil return control method and device, multi-split air conditioner and storage medium

Abstract

The invention discloses an air conditioner oil return control method and device, a multi-split air conditioner and a storage medium, and relates to the technical field of air conditioner control, and the air conditioner oil return control method comprises the steps that when the multi-split air conditioner operates, the oil return operation duration when the compressor frequency of an outdoor unit is lower than the oil return control frequency is recorded; and when the oil return operation duration meets the oil return condition, oil return operation control is conducted according to the current operation mode of the multi-split air conditioner. By means of the mode, oil return control is achieved through the clock, oil return time periods are screened, different operation modes are combined, the influence of noise in the oil return process on a user is reduced, and the use comfort of the user is improved.

Description

Technical Field

[0001] The present application relates to the field of air conditioning control technology, and in particular to an air conditioning oil return control method, device, multi-split air conditioner and storage medium. Background Art

[0002] The existing heat recovery system directly increases the frequency when returning oil in cooling and heating modes, and directly returns oil after mode switching in mixed mode. During the oil return operation, there is the sound of refrigerant on the one hand, and the noise caused by mode switching on the other hand. The existing valve opening adjustment and operating frequency adjustment affect the oil return effect, and at the same time, the oil return will still produce noise to the user experience, especially during sleep time, affecting the user's sleep quality.

[0003] The above contents are only used to assist in understanding the technical solution of the present application and do not constitute an admission that the above contents are prior art. Summary of the invention

[0004] The main purpose of the present application is to provide an air-conditioning oil return control method, device, multi-split air conditioner and storage medium, aiming to solve the technical problem that oil return through valve opening adjustment and operating frequency adjustment affects the oil return effect and generates noise.

[0005] To achieve the above purpose, the present application proposes an air conditioner oil return control method, the method comprising:

[0006] Applied to a multi-split air conditioner, the multi-split air conditioner includes an outdoor unit, multiple indoor units and a water tank, the outdoor unit is respectively connected to each indoor unit and the water tank, the method includes:

[0007] When the multi-split air conditioner is in operation, recording the oil return operation time during which the compressor frequency of the outdoor unit is lower than the oil return control frequency;

[0008] When the oil return operation time meets the oil return condition, the oil return operation control is performed according to the current operation mode of the multi-split air conditioner.

[0009] Optionally, when the oil return operation time meets the oil return condition, the step of performing oil return operation control according to the current operation mode of the multi-split air conditioner includes:

[0010] Determine the oil return time range of the currently operating indoor unit in each indoor unit and the operating mode of the multi-split air conditioner;

[0011] Determining whether the oil return condition is met according to the oil return time range;

[0012] The oil return operation control is performed according to the judgment result and the operation mode.

[0013] Optionally, the step of performing oil return operation control according to the judgment result and the operation mode includes:

[0014] When the multi-split air conditioner is in cooling mode, the oil return time range of each currently running indoor unit meets the oil return condition, and the oil return operation time of the currently running indoor unit is greater than the longest continuous time, the oil return operation is performed on the currently running indoor unit.

[0015] Optionally, the step of performing oil return operation control according to the judgment result and the operation mode includes:

[0016] When the multi-split air conditioner is in heating mode, when the oil return time range of each currently running indoor unit does not meet the oil return condition, determining the operation scene of the currently running indoor unit, the operation scene includes a bedroom operation scene and a living room operation scene;

[0017] When the operation scene of the currently running indoor unit is the living room operation scene, and the oil return operation duration of the currently running indoor unit is greater than the maximum continuous duration, performing an oil return operation on the currently running indoor unit;

[0018] When the operation scene of the currently running indoor unit is the bedroom operation scene and the oil return condition of the living room indoor unit corresponding to the currently running indoor unit is met at the current moment, the living room indoor unit corresponding to the currently running indoor unit is turned on to perform the oil return operation;

[0019] When the operation scene of the currently running indoor unit is the bedroom operation scene, the oil return condition of the living room indoor unit corresponding to the currently running indoor unit is not met at the current moment, and the oil return operation time of the currently running indoor unit is greater than the longest continuous time, the currently running indoor unit is turned off, and the oil return operation is performed through the living room indoor unit corresponding to the currently running indoor unit.

[0020] Optionally, the step of performing oil return operation control according to the judgment result and the operation mode includes:

[0021] When the multi-split air conditioner is in the hot water making mode and the oil return time range of each currently running indoor unit all meets the oil return condition, each indoor unit is switched to the cooling mode to perform the oil return operation;

[0022] When not all indoor units meet the oil return condition, and the living room indoor unit among the indoor units meets the oil return condition, adjusting the living room indoor unit to a cooling mode and performing an oil return operation;

[0023] When not all indoor units meet the oil return condition, the living room indoor unit among the indoor units does not meet the oil return condition, and the oil return operation time of the currently running indoor unit is greater than the longest continuous time, the currently running indoor unit is turned off, and the oil return operation is performed through the living room indoor unit corresponding to the currently running indoor unit.

[0024] Optionally, the step of performing oil return operation control according to the judgment result and the operation mode includes:

[0025] When the multi-split air conditioner is in cooling and hot water production mode, the oil return time range of the currently running indoor unit meets the oil return condition, and the oil return operation time of the currently running indoor unit is greater than the maximum continuous time, the oil return operation is performed on the currently running indoor unit.

[0026] Optionally, the step of performing oil return operation control according to the judgment result and the operation mode includes:

[0027] When the multi-split air conditioner is in heating and hot water mode, and the oil return time range of each currently running indoor unit meets the oil return condition, each indoor unit is switched to heating mode to perform the oil return operation;

[0028] When the oil return time range of each currently running indoor unit does not meet the oil return condition, determining the operation scene of the currently running indoor unit;

[0029] When the operation scene of the currently running indoor unit is the living room operation scene, and the oil return operation duration of the currently running indoor unit is greater than the maximum continuous duration, switching the currently running indoor unit to a heating mode to perform an oil return operation;

[0030] When the operation scene of the currently running indoor unit is the bedroom operation scene and the oil return condition of the living room indoor unit corresponding to the currently running indoor unit is met at the current moment, the living room indoor unit corresponding to the currently running indoor unit is turned on to perform a heating mode and perform an oil return operation;

[0031] When the operation scene of the currently running indoor unit is the bedroom operation scene, the oil return condition of the living room indoor unit corresponding to the currently running indoor unit is not met at the current moment, and the oil return operation time of the currently running indoor unit is greater than the maximum continuous time, the currently running indoor unit is turned off, and the oil return operation is performed through the living room indoor unit corresponding to the currently running indoor unit

[0032] In addition, to achieve the above purpose, the present application also proposes an air-conditioning oil return control device, the air-conditioning oil return control device comprising:

[0033] The duration recording module is used to record the oil return operation duration when the compressor frequency of the outdoor unit is lower than the oil return control frequency when the multi-split air conditioner is running;

[0034] The oil return control module is used to perform oil return operation control according to the current operation mode of the multi-split air conditioner when the oil return operation time meets the oil return condition.

[0035] In addition, to achieve the above-mentioned purpose, the present application also proposes a multi-split air conditioner, which includes: a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the computer program is configured to implement the steps of the air conditioner return oil control method as described above.

[0036] In addition, to achieve the above-mentioned purpose, the present application also proposes a storage medium, which is a computer-readable storage medium, and a computer program is stored on the storage medium. When the computer program is executed by the processor, the steps of the air conditioning oil return control method as described above are implemented.

[0037] In addition, to achieve the above-mentioned purpose, the present application also provides a computer program product, which includes a computer program, and when the computer program is executed by a processor, the steps of the air conditioner oil return control method as described above are implemented.

[0038] One or more technical solutions proposed in this application have at least the following technical effects:

[0039] The present application records the oil return operation time when the compressor frequency of the outdoor unit is lower than the oil return control frequency when the multi-split air conditioner is running; when the oil return operation time meets the oil return condition, the oil return operation control is performed according to the current operation mode of the multi-split air conditioner. In this way, the oil return control is implemented through clock oil return control, and the oil return time period is screened. In combination with different operation modes, the impact of the oil return process noise on the user is reduced, thereby improving the user's comfort. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0041] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0042] Figure 1 A flow chart of the first embodiment of the air conditioner oil return control method of the present application;

[0043] Figure 2 A schematic diagram of a simplified flow chart of an air-conditioning oil return control method provided in Embodiment 2 of the present application;

[0044] Figure 3 A flow chart of the second embodiment of the air conditioner oil return control method provided in this application;

[0045] Figure 4 This is a schematic diagram of the module structure of the air-conditioning oil return control device according to an embodiment of the present application;

[0046] Figure 5 Schematic diagram of the equipment structure of the hardware operating environment involved in the air-conditioning oil return control method in the embodiment of the present application.

[0047] The purpose, features and advantages of this application will be further described in conjunction with the embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0048] It should be understood that the specific embodiments described herein are only used to explain the technical solutions of the present application and are not used to limit the present application.

[0049] In order to better understand the technical solution of the present application, a detailed description will be given below in conjunction with the accompanying drawings and specific implementation methods.

[0050] The main solution of the embodiment of the present application is: when the multi-split air conditioner is running, the oil return operation time during which the compressor frequency of the outdoor unit is lower than the oil return control frequency is recorded; when the oil return operation time meets the oil return condition, the oil return operation control is performed according to the current operation mode of the multi-split air conditioner.

[0051] In this embodiment, for ease of description, the following description is made by taking identification of a multi-split air conditioner as the execution subject.

[0052] Due to the existing heat recovery system, when returning oil in cooling and heating modes, the frequency is directly increased to return oil, and when in mixed mode, the mode is directly switched and the oil is returned. When the oil is returned, there is the sound of the refrigerant on the one hand, and the noise caused by the mode switching on the other hand. The existing valve opening adjustment and operating frequency adjustment affect the oil return effect, and at the same time, the noise will still affect the user experience during the oil return, especially during the sleeping period, affecting the user's sleep quality.

[0053] The present application provides a solution, which uses clock oil return control to screen the oil return time period, and combines different operating modes to reduce the impact of oil return process noise on users and improve user comfort.

[0054] It should be noted that the execution subject of this embodiment can be a computing service device with data processing, network communication and program running functions, such as a tablet computer, a personal computer, a mobile phone, etc., or an electronic device capable of realizing the above functions, a multi-split air conditioner, etc. The following takes a multi-split air conditioner as an example to illustrate this embodiment and the following embodiments.

[0055] Based on this, the embodiment of the present application provides an air conditioner oil return control method, referring to Figure 1 , Figure 1 This is a flow chart of the first embodiment of the air conditioner oil return control method of the present application.

[0056] In this embodiment, the air conditioner oil return control method includes steps S10 to S20:

[0057] Step S10, when the multi-split air conditioner is running, recording the oil return operation time during which the compressor frequency of the outdoor unit is lower than the oil return control frequency;

[0058] It should be noted that if Figure 2 The figure shows a schematic diagram of the structure of a multi-split air conditioner, in which the outdoor unit includes a compressor and other parts, and the indoor part includes at least one indoor unit and a water tank, that is, a hot water module, and the water tank and each indoor unit are directly connected to the outdoor unit.

[0059] It should be understood that the heat recovery outdoor unit system has the following operating modes: cooling, heating, hot water, cooling + hot water, heating + hot water. Because the heat recovery system has multiple modes, especially the hybrid mode, there are different valve switching and frequency, valve opening and other adjustments during the oil return process, which is very easy to generate noise. The present invention sets up one-to-many different indoor unit usage scenarios (bedroom, living room, etc.) and couples the clock oil return control to optimize the oil return process noise and reduce the noise impact of the oil return process on the user's use process.

[0060] In the specific implementation, when the unit is installed, the installer sets the installation scene corresponding to the indoor unit according to the user's needs and the location of the indoor unit installation room. And according to the user's requirements, the clock oil return time is set.

[0061] It should be noted that the clock oil return: the oil return time period is set through the internal machine program, and one day is calculated as 24 hours. The start time T1 and the end time T2 of the oil return are set. If the current time is within the range of T1 to T2, it is the oil return time period, and the oil return action can be performed. When T1 is equal to T2, it means that the oil can be returned all day; when T2 is less than T1, it means that it spans days, that is, the oil can be returned from T1 on the first day to T2 on the second day.

[0062] It should be understood that the priority of the time period when the oil cannot be returned to the indoor units in different scenarios is: the time period when the oil cannot be returned to the indoor unit in the bedroom takes precedence over the time period when the oil can be returned to the indoor unit in the living room. If the unit must run the oil return program when it is not within the time period when the oil can be returned to the indoor unit, the oil return program will be started first with the indoor unit in the living room.

[0063] In the specific implementation, after the user starts the machine, the continuous operation time t1 of the operating frequency f lower than the set frequency f1 is recorded in real time, and then the continuous operation time t1 of the operating frequency f lower than the set value f1 and the set value t0 are judged. Among them, f: the set oil return control frequency. When the frequency is lower than this frequency, the low-frequency operation time is recorded (when the time reaches the set value, it is judged whether the oil can be returned). t1: the continuous operation time of the operating frequency lower than f. t0: the first continuous time set to judge the need for oil return during low-frequency operation. t 00 :The second continuous time for judging the need for oil return in low-frequency operation, i.e. the longest continuous time in the following text. If t1<t0, no oil return is performed and normal operation continues. If t1>t0, preparations for oil return are performed. First, the operation mode is confirmed, and the oil return operation control is confirmed according to different operation modes.

[0064] Step S20, when the oil return operation time meets the oil return condition, the oil return operation control is performed according to the current operation mode of the multi-split air conditioner.

[0065] It should be noted that after determining the oil return operation time, it is necessary to judge whether the oil return conditions are met, that is, to judge the oil return time, to judge whether the currently running indoor unit is within the oil return time range, and finally to perform specific oil return control in combination with the operating mode of the multi-split air conditioner.

[0066] This embodiment provides an air conditioner oil return control method, when the multi-split air conditioner is running, the oil return operation time when the compressor frequency of the outdoor unit is lower than the oil return control frequency is recorded; when the oil return operation time meets the oil return condition, the oil return operation control is performed according to the current operation mode of the multi-split air conditioner. In this way, the oil return control is realized through the clock oil return control, the oil return time period is screened, and the impact of the oil return process noise on the user is reduced in combination with the different operation modes, thereby improving the user's comfort.

[0067] Based on the first embodiment of the present application, in the second embodiment of the present application, the same or similar contents as those in the above-mentioned embodiment 1 can be referred to the above introduction, and will not be repeated in the following. Figure 3 , step S20 includes steps S201 to S203:

[0068] Step S201, determining the oil return time range of the currently operating indoor unit in each indoor unit and the operating mode of the multi-split air conditioner;

[0069] It should be noted that first, the currently operating indoor unit of each indoor unit, that is, the oil return time range of the indoor unit currently in operation, that is, the pre-set time period during which the oil return operation can be performed, and the operating mode of each indoor unit currently in operation are determined.

[0070] Step S202, judging whether the oil return condition is met according to the oil return time range;

[0071] It should be understood that after the oil return possible time range is determined, it is determined whether the current moment is satisfied based on the oil return possible time range, that is, whether the oil return condition is satisfied.

[0072] Step S203, performing oil return operation control according to the judgment result and the operation mode.

[0073] In a specific implementation, based on the judgment result, the oil return operation is controlled according to the current operation mode, so that smoother control can be achieved.

[0074] In a feasible implementation, in order to perform an oil return operation in cooling mode, step S203 includes: when the multi-split air conditioner is in cooling mode, the oil return time range of each currently running indoor unit meets the oil return condition, and the oil return operation time of the currently running indoor unit is greater than the longest continuous time, performing an oil return operation on the currently running indoor unit.

[0075] It should be noted that the cooling mode first performs the oil return clock judgment to determine whether the currently running indoor unit is within the oil return time range. If it is within the oil return time range, the oil return control is directly operated, otherwise it will continue to operate in the current mode first and continue to record the operating time lower than f1. When t1>t00, the oil return operation control is forced, otherwise it will continue to operate in the current mode.

[0076] In a feasible implementation manner, in order to perform an oil return operation in the heating mode, step S203 includes: when the multi-split air conditioner is in the heating mode, when the oil return time range of each currently operating indoor unit does not meet the oil return condition, determining the operating scene of the currently operating indoor unit, the operating scene including the bedroom operating scene and the living room operating scene; when the operating scene of the currently operating indoor unit is the living room operating scene, and the oil return operation length of the currently operating indoor unit is greater than the longest continuous time, performing the oil return operation on the currently operating indoor unit; when the operating scene of the currently operating indoor unit is the bedroom operating scene, and the oil return condition of the living room indoor unit corresponding to the currently operating indoor unit is met at the current moment, turning on the living room indoor unit corresponding to the currently operating indoor unit for the oil return operation; when the operating scene of the currently operating indoor unit is the bedroom operating scene, the oil return condition of the living room indoor unit corresponding to the currently operating indoor unit is not met at the current moment, and the oil return operation length of the currently operating indoor unit is greater than the longest continuous time, turning off the currently operating indoor unit, and performing the oil return operation through the living room indoor unit corresponding to the currently operating indoor unit.

[0077] It should be understood that the oil return clock is used to determine whether the currently running indoor unit is within the oil return time range. If it is within the oil return time range, the oil return control is directly executed. Otherwise, the use scenario of the indoor unit currently running is determined. If it is a living room indoor unit, it is preferred to continue to run in the current mode and continue to record the running time when the frequency f is lower than f1. When t1>t 00 , the oil return operation control is forced, otherwise it continues to operate in the current mode.

[0078] In the specific implementation, if the use scenario of the running indoor unit is the bedroom, it is determined whether it is within the oil return time range of the living room indoor unit. If so, the currently running indoor unit is turned off, the living room indoor unit is turned on, and the oil return operation control is performed. After the oil return operation is completed, the bedroom indoor unit that was running before the oil return is turned on and the living room indoor unit is turned off. Otherwise, the current mode of the current indoor unit is continued to run first, and the running time below f1 is continued to be recorded. When t1>t 00 When the current running indoor unit is turned off, the living room indoor unit is turned on for oil return operation control. After the oil return operation is completed, the bedroom indoor unit that was running before the oil return is turned on again, and the living room indoor unit is turned off. Otherwise, the current mode continues to operate.

[0079] In a feasible implementation manner, in order to perform an oil return operation in a hot water making mode, step S203 includes: when the multi-split air conditioner is in a hot water making mode and the oil return time range of each currently running indoor unit all meets the oil return condition, switching each indoor unit to a cooling mode to perform an oil return operation; when not all indoor units meet the oil return condition, and the living room indoor unit among the indoor units meets the oil return condition, adjusting the living room indoor unit to a cooling mode and performing an oil return operation; when not all indoor units meet the oil return condition, the living room indoor unit among the indoor units does not meet the oil return condition, and the oil return operation time of the currently running indoor unit is greater than the longest continuous time, shutting down the currently running indoor unit, and performing an oil return operation through the living room indoor unit corresponding to the currently running indoor unit.

[0080] It should be noted that the oil return clock is used to determine whether all indoor units can return oil. If so, the cooling mode is switched directly, and all indoor units are turned on to operate the oil return control. Otherwise, it is determined whether the indoor unit in the living room can return oil. If so, the operation mode is switched to the indoor unit in the living room to start cooling and operate the oil return control. After the oil return is completed, it is switched back to the hot water mode. If the indoor unit in the living room is also not within the oil return clock range, it will continue to operate in the current mode first, and continue to record the operating time when the frequency f is lower than f1. When t1>t 00 When the machine is in the state of cooling, it will be forced to switch to the living room indoor cooling mode for oil return operation control, otherwise it will continue to operate in the current mode.

[0081] In a feasible implementation manner, in order to perform an oil return operation in the cooling plus hot water mode, step S203 includes: when the multi-split air conditioner is in the cooling plus hot water mode, the oil return time range of the currently running indoor unit meets the oil return condition, and the oil return operation time of the currently running indoor unit is greater than the maximum continuous time, performing an oil return operation on the currently running indoor unit.

[0082] It should be understood that the oil return clock is used to determine whether the currently running indoor unit is within the oil return time range. If it is within the oil return time range, the cooling mode is switched to perform the oil return control. Otherwise, the current mode is preferred to continue to run, and the running time below f1 is continued to be recorded. When t1>t 00 , the oil return operation control is forced, otherwise it continues to operate in the current mode.

[0083] In a feasible implementation manner, in order to perform an oil return operation in the heating plus hot water production mode, step S203 includes: when the multi-split air conditioner is in the heating plus hot water production mode, the oil return time range of each currently running indoor unit meets the oil return condition, and each indoor unit is switched to the heating mode to perform the oil return operation; when the oil return time range of each currently running indoor unit does not meet the oil return condition, the operation scene of the currently running indoor unit is determined; when the operation scene of the currently running indoor unit is the living room operation scene, and the oil return operation time of the currently running indoor unit is greater than the longest continuous time, the currently running indoor unit is switched to the heating mode; The oil return operation is performed in the heating mode; when the operation scene of the currently running indoor unit is the bedroom operation scene, and the oil return condition of the living room indoor unit corresponding to the currently running indoor unit is met at the current moment, the living room indoor unit corresponding to the currently running indoor unit is turned on to perform the heating mode, and the oil return operation is performed; when the operation scene of the currently running indoor unit is the bedroom operation scene, the oil return condition of the living room indoor unit corresponding to the currently running indoor unit is not met at the current moment, and the oil return operation time of the currently running indoor unit is greater than the longest continuous time, the currently running indoor unit is turned off, and the oil return operation is performed through the living room indoor unit corresponding to the currently running indoor unit.

[0084] In the specific implementation, the oil return clock is judged to determine whether the currently running indoor unit is within the oil return time range. In the oil return time period, it switches to the heating mode and runs the oil return control. Otherwise, the use scenario of the running indoor unit is judged. If it is the living room indoor unit, it will continue to run in the current mode and continue to record the running time when the frequency f is lower than f1. When t1>t 00 When , it is forced to switch to the living room indoor heating mode and perform oil return operation control, otherwise it continues to operate in the current mode.

[0085] It should be noted that if the use scenario of the running indoor unit is the bedroom, it is determined whether it is within the oil return time range of the living room indoor unit. If so, the currently running indoor unit is turned off, the living room indoor unit is switched to heat, and the oil return control is run. After the oil return operation is completed, the bedroom indoor unit that was running before the oil return is turned on and the living room indoor unit is turned off. Otherwise, the current mode of the current indoor unit is continued to run first, and the running time below f1 is continued to be recorded. When t1>t 00 When the current running indoor unit is turned off, the indoor unit in the living room is switched to the oil return operation control. After the oil return operation is completed, the bedroom indoor unit that was running before the oil return is turned on again, and the living room indoor unit is turned off. Otherwise, the current mode continues to operate.

[0086] This embodiment determines the oil return time range of the currently running indoor unit in each indoor unit and the operation mode of the multi-split air conditioner; judges whether the oil return condition is met according to the oil return time range; and performs oil return operation control according to the judgment result and the operation mode. In this way, through clock oil return control, indoor unit usage scene priority control, and coupling control between the two, it is possible to reduce the impact of oil return process noise on users and improve user comfort.

[0087] It should be noted that the above examples are only used to understand the present application and do not constitute a limitation on the air-conditioning oil return control method of the present application. More simple transformations based on this technical concept are all within the protection scope of the present application.

[0088] This application also provides an air conditioning oil return control device, please refer to Figure 4 , the air conditioning oil return control device comprises:

[0089] The duration recording module 10 is used to record the oil return operation duration when the compressor frequency of the outdoor unit is lower than the oil return control frequency when the multi-split air conditioner is running.

[0090] The oil return control module 20 is used to perform oil return operation control according to the current operation mode of the multi-split air conditioner when the oil return operation time meets the oil return condition.

[0091] In this embodiment, when the multi-split air conditioner is running, the oil return operation time during which the compressor frequency of the outdoor unit is lower than the oil return control frequency is recorded; when the oil return operation time meets the oil return condition, the oil return operation control is performed according to the current operation mode of the multi-split air conditioner. In this way, the oil return control is implemented through clock oil return control, and the oil return time period is screened. In combination with different operation modes, the impact of the oil return process noise on the user is reduced, thereby improving the user's comfort.

[0092] In one embodiment, the oil return control module 20 is also used to determine the oil return time range of the currently operating indoor unit in each indoor unit and the operating mode of the multi-split air conditioner; judge whether the oil return condition is met according to the oil return time range; and perform oil return operation control according to the judgment result and the operating mode.

[0093] In one embodiment, the oil return control module 20 is also used to perform an oil return operation on the currently running indoor unit when the multi-split air conditioner is in cooling mode, the oil return time range of each currently running indoor unit meets the oil return condition, and the oil return operation time of the currently running indoor unit is greater than the longest continuous time.

[0094] In one embodiment, the oil return control module 20 is further used to determine the operation scene of the currently operating indoor unit when the multi-split air conditioner is in the heating mode and the oil return time range of each currently operating indoor unit does not meet the oil return condition, and the operation scene includes a bedroom operation scene and a living room operation scene; when the operation scene of the currently operating indoor unit is the living room operation scene and the oil return operation length of the currently operating indoor unit is greater than the longest continuous time, perform an oil return operation on the currently operating indoor unit; when the operation scene of the currently operating indoor unit is the bedroom operation scene and the oil return condition of the living room indoor unit corresponding to the currently operating indoor unit is met at the current moment, turn on the living room indoor unit corresponding to the currently operating indoor unit for the oil return operation; when the operation scene of the currently operating indoor unit is the bedroom operation scene and the oil return condition of the living room indoor unit corresponding to the currently operating indoor unit is not met at the current moment and the oil return operation length of the currently operating indoor unit is greater than the longest continuous time, turn off the currently operating indoor unit and perform the oil return operation through the living room indoor unit corresponding to the currently operating indoor unit.

[0095] In one embodiment, the oil return control module 20 is also used to switch each indoor unit to the cooling mode to perform the oil return operation when the multi-split air conditioner is in the hot water making mode and the oil return time range of each currently running indoor unit all meets the oil return condition; when not all indoor units meet the oil return condition, and the living room indoor unit among the indoor units meets the oil return condition, adjust the living room indoor unit to the cooling mode and perform the oil return operation; when not all indoor units meet the oil return condition, the living room indoor unit among the indoor units does not meet the oil return condition, and the oil return operation time of the currently running indoor unit is greater than the longest continuous time, shut down the currently running indoor unit, and perform the oil return operation through the living room indoor unit corresponding to the currently running indoor unit.

[0096] In one embodiment, the oil return control module 20 is also used to perform an oil return operation on the currently running indoor unit when the multi-split air conditioner is in cooling and hot water production mode, the oil return time range of the currently running indoor unit meets the oil return condition, and the oil return operation time of the currently running indoor unit is greater than the maximum continuous time.

[0097] In one embodiment, the oil return control module 20 is further used to switch each indoor unit to the heating mode to perform the oil return operation when the multi-split air conditioner is in the heating and hot water production mode and the oil return time range of each currently running indoor unit meets the oil return condition; when the oil return time range of each currently running indoor unit does not meet the oil return condition, determine the operation scene of the currently running indoor unit; when the operation scene of the currently running indoor unit is the living room operation scene and the oil return operation time of the currently running indoor unit is greater than the longest continuous time, switch the currently running indoor unit to the heating mode to perform the oil return operation ; When the operation scene of the currently running indoor unit is the bedroom operation scene, and the oil return condition of the living room indoor unit corresponding to the currently running indoor unit is met at the current moment, the living room indoor unit corresponding to the currently running indoor unit is turned on to perform heating mode, and the oil return operation is performed; when the operation scene of the currently running indoor unit is the bedroom operation scene, the oil return condition of the living room indoor unit corresponding to the currently running indoor unit is not met at the current moment, and the oil return operation time of the currently running indoor unit is greater than the longest continuous time, the currently running indoor unit is turned off, and the oil return operation is performed through the living room indoor unit corresponding to the currently running indoor unit.

[0098] The air-conditioning oil return control device provided by the present application adopts the air-conditioning oil return control method in the above embodiment, which can solve the technical problem that oil return through valve opening adjustment and operation frequency adjustment affects the oil return effect and generates noise. Compared with the prior art, the beneficial effects of the air-conditioning oil return control device provided by the present application are the same as the beneficial effects of the air-conditioning oil return control method provided by the above embodiment, and the other technical features of the air-conditioning oil return control device are the same as the features disclosed in the above embodiment method, which will not be repeated here.

[0099] The present application provides a multi-split air conditioner, which includes: at least one processor; and a memory communicatively connected to the at least one processor; wherein the memory stores instructions executable by the at least one processor, and the instructions are executed by the at least one processor so that the at least one processor can execute the air conditioner oil return control method in the above-mentioned embodiment one.

[0100] Reference below Figure 5, which shows a schematic diagram of the structure of a multi-split air conditioner suitable for implementing the embodiment of the present application. The multi-split air conditioner in the embodiment of the present application may include but is not limited to mobile terminals such as mobile phones, laptop computers, digital broadcast receivers, PDAs (Personal Digital Assistants), PADs (Portable Application Descriptions), PMPs (Portable Media Players), vehicle-mounted terminals (such as vehicle-mounted navigation terminals), etc., and fixed terminals such as digital TVs, desktop computers, etc. Figure 5 The multi-split air conditioner shown is merely an example and should not bring any limitation to the functions and scope of use of the embodiments of the present application.

[0101] like Figure 5 As shown, the multi-split air conditioner may include a processing device 1001 (e.g., a central processing unit, a graphics processor, etc.), which can perform various appropriate actions and processes according to a program stored in a read-only memory (ROM: Read Only Memory) 1002 or a program loaded from a storage device 1003 to a random access memory (RAM: Random Access Memory) 1004. In RAM1004, various programs and data required for the operation of the multi-split air conditioner are also stored. The processing device 1001, ROM1002, and RAM1004 are connected to each other through a bus 1005. An input / output (I / O) interface 1006 is also connected to the bus. Generally, the following systems can be connected to the I / O interface 1006: an input device 1007 including, for example, a touch screen, a touch pad, a keyboard, a mouse, an image sensor, a microphone, an accelerometer, a gyroscope, etc.; an output device 1008 including, for example, a liquid crystal display (LCD: Liquid Crystal Display), a speaker, a vibrator, etc.; a storage device 1003 including, for example, a magnetic tape, a hard disk, etc.; and a communication device 1009. The communication device 1009 can allow the multi-split air conditioner to communicate with other devices wirelessly or by wire to exchange data. Although the figure shows a multi-split air conditioner with various systems, it should be understood that it is not required to implement or have all the systems shown. More or fewer systems can be implemented or provided instead.

[0102] In particular, according to the embodiments disclosed in the present application, the process described above with reference to the flowchart can be implemented as a computer software program. For example, the embodiments disclosed in the present application include a computer program product, which includes a computer program carried on a computer-readable medium, and the computer program includes a program code for executing the method shown in the flowchart. In such an embodiment, the computer program can be downloaded and installed from a network through a communication device, or installed from a storage device 1003, or installed from a ROM 1002. When the computer program is executed by the processing device 1001, the above-mentioned functions defined in the method of the embodiment disclosed in the present application are executed.

[0103] The multi-split air conditioner provided by the present application adopts the air conditioner oil return control method in the above embodiment, which can solve the technical problem that oil return through valve opening adjustment and operation frequency adjustment affects the oil return effect and generates noise. Compared with the prior art, the beneficial effects of the multi-split air conditioner provided by the present application are the same as the beneficial effects of the air conditioner oil return control method provided by the above embodiment, and other technical features in the multi-split air conditioner are the same as the features disclosed in the method of the previous embodiment, which will not be repeated here.

[0104] It should be understood that the various parts disclosed in this application can be implemented by hardware, software, firmware or a combination thereof. In the description of the above embodiments, specific features, structures, materials or characteristics can be combined in any one or more embodiments or examples in a suitable manner.

[0105] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

[0106] The present application provides a computer-readable storage medium having computer-readable program instructions (ie, computer programs) stored thereon, and the computer-readable program instructions are used to execute the air-conditioning oil return control method in the above-mentioned embodiment.

[0107] The computer-readable storage medium provided in the present application may be, for example, a USB flash drive, but is not limited to electrical, magnetic, optical, electromagnetic, infrared, or semiconductor systems, systems or devices, or any combination of the above. More specific examples of computer-readable storage media may include, but are not limited to: an electrical connection with one or more wires, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the above. In this embodiment, the computer-readable storage medium may be any tangible medium containing or storing a program that can be used by or in combination with an instruction execution system, system or device. The program code contained on the computer-readable storage medium may be transmitted using any appropriate medium, including but not limited to: wires, optical cables, RF (Radio Frequency), etc., or any suitable combination of the above.

[0108] The computer-readable storage medium may be included in the multi-split air conditioner; or may exist independently without being assembled into the multi-split air conditioner.

[0109] The computer-readable storage medium carries one or more programs. When the one or more programs are executed by a multi-split air conditioner, the multi-split air conditioner: when the multi-split air conditioner is running, records the oil return operation time when the compressor frequency of the outdoor unit is lower than the oil return control frequency; when the oil return operation time meets the oil return condition, performs oil return operation control according to the current operation mode of the multi-split air conditioner.

[0110] Computer program code for performing the operations of the present application may be written in one or more programming languages ​​or a combination thereof, including object-oriented programming languages ​​such as Java, Smalltalk, C++, and conventional procedural programming languages ​​such as "C" or similar programming languages. The program code may be executed entirely on the user's computer, partially on the user's computer, as a separate software package, partially on the user's computer and partially on a remote computer, or entirely on a remote computer or server. In the case of a remote computer, the remote computer may be connected to the user's computer through any type of network, including a local area network (LAN) or a wide area network (WAN), or may be connected to an external computer (e.g., via the Internet using an Internet service provider).

[0111] The flow chart and block diagram in the accompanying drawings illustrate the possible architecture, function and operation of the system, method and computer program product according to various embodiments of the present application. In this regard, each square box in the flow chart or block diagram can represent a module, a program segment or a part of a code, and the module, the program segment or a part of the code contains one or more executable instructions for realizing the specified logical function. It should also be noted that in some alternative implementations, the functions marked in the square box can also occur in a sequence different from that marked in the accompanying drawings. For example, two square boxes represented in succession can actually be executed substantially in parallel, and they can sometimes be executed in the opposite order, depending on the functions involved. It should also be noted that each square box in the block diagram and / or flow chart, and the combination of the square boxes in the block diagram and / or flow chart can be implemented with a dedicated hardware-based system that performs a specified function or operation, or can be implemented with a combination of dedicated hardware and computer instructions.

[0112] The modules involved in the embodiments described in this application may be implemented by software or hardware, wherein the name of the module does not constitute a limitation on the unit itself in some cases.

[0113] The readable storage medium provided in the present application is a computer-readable storage medium, which stores computer-readable program instructions (i.e., computer programs) for executing the above-mentioned air-conditioning oil return control method, and can solve the technical problem that oil return through valve opening adjustment and operating frequency adjustment affects the oil return effect and generates noise. Compared with the prior art, the beneficial effects of the computer-readable storage medium provided in the present application are the same as the beneficial effects of the air-conditioning oil return control method provided in the above-mentioned embodiment, and will not be repeated here.

[0114] The present application also provides a computer program product, including a computer program, which implements the steps of the air-conditioning oil return control method as described above when executed by a processor.

[0115] The computer program product provided by the present application can solve the technical problem that oil return through valve opening adjustment and operating frequency adjustment affects the oil return effect and generates noise. Compared with the prior art, the beneficial effects of the computer program product provided by the present application are the same as the beneficial effects of the air conditioner oil return control method provided by the above embodiment, which will not be repeated here.

[0116] The above descriptions are only some embodiments of the present application, and are not intended to limit the patent scope of the present application. All equivalent structural changes made using the contents of the present application specification and drawings under the technical concept of the present application, or direct / indirect applications in other related technical fields are included in the patent protection scope of the present application.

Claims

1. An air conditioner oil return control method, characterized in that: The method is applied to a multi-split air conditioner, which includes an outdoor unit, multiple indoor units and a water tank, wherein the outdoor unit is connected to each indoor unit and the water tank respectively, and the method includes: When the multi-split air conditioner is in operation, recording the oil return operation time during which the compressor frequency of the outdoor unit is lower than the oil return control frequency; When the oil return operation time meets the oil return condition, the oil return operation control is performed according to the current operation mode of the multi-split air conditioner.

2. The method according to claim 1, characterized in that When the oil return operation time meets the oil return condition, the step of performing oil return operation control according to the current operation mode of the multi-split air conditioner includes: Determine the oil return time range of the currently operating indoor unit in each indoor unit and the operating mode of the multi-split air conditioner; Determining whether the oil return condition is met according to the oil return time range; The oil return operation control is performed according to the judgment result and the operation mode.

3. The method according to claim 2, characterized in that The step of performing oil return operation control according to the judgment result and the operation mode comprises: When the multi-split air conditioner is in cooling mode, the oil return time range of each currently running indoor unit meets the oil return condition, and the oil return operation time of the currently running indoor unit is greater than the longest continuous time, the oil return operation is performed on the currently running indoor unit.

4. The method according to claim 2, characterized in that The step of performing oil return operation control according to the judgment result and the operation mode comprises: When the multi-split air conditioner is in heating mode, when the oil return time range of each currently running indoor unit does not meet the oil return condition, determining the operation scene of the currently running indoor unit, the operation scene includes a bedroom operation scene and a living room operation scene; When the operation scene of the currently running indoor unit is the living room operation scene, and the oil return operation duration of the currently running indoor unit is greater than the maximum continuous duration, performing an oil return operation on the currently running indoor unit; When the operation scene of the currently running indoor unit is the bedroom operation scene and the oil return condition of the living room indoor unit corresponding to the currently running indoor unit is met at the current moment, the living room indoor unit corresponding to the currently running indoor unit is turned on to perform the oil return operation; When the operation scene of the currently running indoor unit is the bedroom operation scene, the oil return condition of the living room indoor unit corresponding to the currently running indoor unit is not met at the current moment, and the oil return operation time of the currently running indoor unit is greater than the longest continuous time, the currently running indoor unit is turned off, and the oil return operation is performed through the living room indoor unit corresponding to the currently running indoor unit.

5. The method according to claim 2, characterized in that The step of performing oil return operation control according to the judgment result and the operation mode comprises: When the multi-split air conditioner is in the hot water making mode and the oil return time range of each currently running indoor unit all meets the oil return condition, each indoor unit is switched to the cooling mode to perform the oil return operation; When not all indoor units meet the oil return condition, and the living room indoor unit among the indoor units meets the oil return condition, adjusting the living room indoor unit to a cooling mode and performing an oil return operation; When not all indoor units meet the oil return condition, the living room indoor unit among the indoor units does not meet the oil return condition, and the oil return operation time of the currently running indoor unit is greater than the longest continuous time, the currently running indoor unit is turned off, and the oil return operation is performed through the living room indoor unit corresponding to the currently running indoor unit.

6. The method according to claim 2, characterized in that The step of performing oil return operation control according to the judgment result and the operation mode comprises: When the multi-split air conditioner is in cooling and hot water production mode, the oil return time range of the currently running indoor unit meets the oil return condition, and the oil return operation time of the currently running indoor unit is greater than the maximum continuous time, the oil return operation is performed on the currently running indoor unit.

7. The method according to claim 2, characterized in that The step of performing oil return operation control according to the judgment result and the operation mode comprises: When the multi-split air conditioner is in heating and hot water mode, and the oil return time range of each currently running indoor unit meets the oil return condition, each indoor unit is switched to heating mode to perform the oil return operation; When the oil return time range of each currently running indoor unit does not meet the oil return condition, determining the operation scene of the currently running indoor unit; When the operation scene of the currently running indoor unit is the living room operation scene, and the oil return operation duration of the currently running indoor unit is greater than the maximum continuous duration, switching the currently running indoor unit to a heating mode to perform an oil return operation; When the operation scene of the currently running indoor unit is the bedroom operation scene and the oil return condition of the living room indoor unit corresponding to the currently running indoor unit is met at the current moment, the living room indoor unit corresponding to the currently running indoor unit is turned on to perform a heating mode and perform an oil return operation; When the operation scene of the currently running indoor unit is the bedroom operation scene, the oil return condition of the living room indoor unit corresponding to the currently running indoor unit is not met at the current moment, and the oil return operation time of the currently running indoor unit is greater than the longest continuous time, the currently running indoor unit is turned off, and the oil return operation is performed through the living room indoor unit corresponding to the currently running indoor unit.

8. An air conditioner oil return control device, characterized in that: The device comprises: The duration recording module is used to record the oil return operation duration when the compressor frequency of the outdoor unit is lower than the oil return control frequency when the multi-split air conditioner is running; The oil return control module is used to perform oil return operation control according to the current operation mode of the multi-split air conditioner when the oil return operation time meets the oil return condition.

9. A multi-split air conditioner, characterized in that: The multi-split air conditioner includes: a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the computer program is configured to implement the steps of the air conditioner oil return control method according to any one of claims 1 to 7.

10. A storage medium, characterized in that: The storage medium is a computer-readable storage medium, and a computer program is stored on the storage medium. When the computer program is executed by a processor, the steps of the air-conditioning oil return control method according to any one of claims 1 to 7 are implemented.

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