CN110285544B - Oil return control method, device and system of temperature adjusting equipment and air conditioner - Google Patents
Oil return control method, device and system of temperature adjusting equipment and air conditioner Download PDFInfo
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- CN110285544B CN110285544B CN201910604680.0A CN201910604680A CN110285544B CN 110285544 B CN110285544 B CN 110285544B CN 201910604680 A CN201910604680 A CN 201910604680A CN 110285544 B CN110285544 B CN 110285544B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/50—Control or safety arrangements characterised by user interfaces or communication
- F24F11/61—Control or safety arrangements characterised by user interfaces or communication using timers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/65—Electronic processing for selecting an operating mode
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B31/00—Compressor arrangements
- F25B31/002—Lubrication
- F25B31/004—Lubrication oil recirculating arrangements
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Abstract
The application relates to an oil return control method, device and system of temperature adjusting equipment and an air conditioner, and the method, device and system are used for acquiring temperature information of a future preset time period; when the condition of advance oil return is met according to the temperature information of a future preset time period and a preset oil return frequency reduction critical temperature, the oil return time length is determined according to the temperature information of the future preset time period and a preset compressor oil return time length model; and determining oil return time according to the oil return time length and the temperature information of a future preset time period, and controlling a compressor of the temperature regulating equipment to start oil return at the oil return time according to the oil return time. When the condition that oil needs to be returned in advance is judged by combining the air temperature information of the future preset time period and the preset oil return frequency reduction critical temperature, the oil return time is determined in advance according to the air temperature information of the future preset time period and the preset oil return time length model of the compressor, so that the oil return of the compressor is completed before the air temperature is increased to the preset oil return frequency reduction critical temperature, the oil return of the compressor at the highest frequency is ensured, the protection frequency reduction is avoided, and the oil return efficiency is improved.
Description
Technical Field
The application relates to the technical field of temperature adjusting equipment control, in particular to an oil return control method, device and system of temperature adjusting equipment and an air conditioner.
Background
Temperature regulation equipment sets up the oil return mode, mainly brings the compressor or oil content back to through the refrigerant with the lubricating oil in the system's pipeline, prevents that the compressor from burning out, during the oil return, can bring the noise for the indoor set side because of the refrigerant flow, influences people's rest or official working, and the fluctuation of time group ability also can bring uncomfortable sense for the user when the oil return moreover.
The traditional temperature adjusting equipment mostly adopts timing oil return control, the oil return program is simple and reliable, but the oil return under the mode is not accurate enough because the working environments of units are different and outdoor working conditions are variable, in addition, aiming at overhigh environment temperature of a high-temperature refrigeration area, the frequency of a compressor has to be reduced because of overhigh system pressure during oil return, sometimes the compressor needs to be continuously reduced for several times to meet the safe operation condition, but the oil return efficiency of the compressor after frequency reduction, particularly under the conditions of high drop and long-distance installation, is difficult to return oil, and therefore the oil return efficiency of the traditional oil return method is low.
Disclosure of Invention
Therefore, in order to solve the technical problem of low oil return efficiency of the conventional oil return method, it is necessary to provide an oil return control method, device and system for return temperature adjusting equipment and an air conditioner, which can improve the oil return efficiency.
An oil return control method of a temperature regulation device comprises the following steps:
acquiring temperature information of a future preset time period;
when the condition of advance oil return is met according to the temperature information of a future preset time period and a preset oil return frequency reduction critical temperature, the oil return time length is determined according to the temperature information of the future preset time period and a preset compressor oil return time length model;
and determining oil return time according to the oil return time length and the temperature information of a future preset time period, and controlling a compressor of the temperature regulating equipment to start oil return at the oil return time according to the oil return time.
In one embodiment, the determining that an advance oil return condition is met according to the air temperature information of the future preset time period and a preset oil return frequency reduction critical temperature includes:
and when the temperature higher than the preset oil return frequency reduction critical temperature is determined according to the temperature information of the future preset time period, the condition of oil return in advance is met.
In one embodiment, the determining the oil return time length according to the air temperature information of the future preset time period and a preset compressor oil return time length model includes:
obtaining the average value and the duration of the air temperature above the preset oil return frequency reduction critical temperature in the future preset time period according to the air temperature information of the future preset time period;
and determining the oil return time length according to the average value and the duration of the air temperatures above the preset oil return frequency reduction critical temperature in the future preset time period and a preset compressor oil return time length model.
In one embodiment, the preset compressor oil return time duration model specifically includes:
tH＝(△T-T0)*t*(1+C)*k+tb
wherein tH is an oil return duration, T0 is a preset oil return frequency reduction critical temperature, △ T is an average value of temperatures above the preset oil return frequency reduction critical temperature in a future preset time period, T is a duration of temperatures above the preset oil return frequency reduction critical temperature in the future preset time period, k is a correction coefficient, C is a ratio of the capacity of the silent mode internal machine to the installed total capacity of the internal machine, and tb is a standard oil return mode maintaining duration.
In one embodiment, the determining an oil return time according to the oil return time length and the air temperature information of the future preset time period, and controlling a compressor of the temperature regulation device to start oil return at the oil return time according to the oil return time includes:
determining the moment corresponding to the preset oil return frequency reduction critical temperature according to the air temperature information of the future preset time period;
and determining oil return time according to the oil return time and the time corresponding to the preset oil return frequency reduction critical temperature, and controlling a compressor of the temperature regulating equipment to start oil return at the oil return time according to the oil return time.
In one embodiment, after obtaining the temperature information of the future preset time period, the method includes:
and when the condition that the advance oil return condition is not met is determined according to the air temperature information of the future preset time period and the preset oil return frequency reduction critical temperature, controlling the oil return of the compressor of the temperature regulating equipment according to preset oil return control parameters.
In one embodiment, before obtaining the temperature information of the future preset time period, the method includes:
acquiring historical oil return frequency reduction critical temperature;
and obtaining the average value of the oil return frequency reduction critical temperature according to the historical oil return frequency reduction critical temperature, and using the average value as the preset oil return frequency reduction critical temperature.
An oil return control device of a temperature adjusting device, characterized in that the device comprises:
the temperature information acquisition module is used for acquiring temperature information of a future preset time period;
the oil return duration determining module is used for determining the oil return duration according to a preset compressor oil return duration model when the condition of oil return in advance is met according to the air temperature information of the future preset time period and the preset oil return frequency reduction critical temperature;
and the oil return control module is used for determining oil return time according to the oil return time length and the air temperature information of the future preset time period, and controlling a compressor of the temperature regulating equipment to start oil return at the oil return time according to the oil return time.
A computer-readable storage medium, on which a computer program is stored which, when executed by a processor, carries out the steps of:
acquiring temperature information of a future preset time period;
when the condition of meeting the oil return condition in advance is determined according to the air temperature information of the future preset time period and the preset oil return frequency reduction critical temperature, the oil return time length is determined according to the air temperature information of the future preset time period and a preset compressor oil return time length model;
and determining oil return time according to the oil return time length and the temperature information of the future preset time period, and controlling a compressor of the temperature regulating equipment to start oil return at the oil return time according to the oil return time.
An oil return control system of temperature adjusting equipment comprises a controller and a communication device, wherein the communication device is connected with the controller,
the communication device is used for receiving temperature information of a future preset time period and sending the temperature information to the controller;
the controller is used for performing multi-split air conditioning oil return control according to the method.
An air conditioner comprises the oil return control system of the temperature adjusting device.
According to the oil return control method, the oil return control device, the oil return control system and the air conditioner of the temperature adjusting equipment, the temperature information of a future preset time period is obtained; when the condition of advance oil return is met according to the temperature information of a future preset time period and a preset oil return frequency reduction critical temperature, the oil return time length is determined according to the temperature information of the future preset time period and a preset compressor oil return time length model; and determining oil return time according to the oil return time length and the temperature information of a future preset time period, and controlling a compressor of the temperature regulating equipment to start oil return at the oil return time according to the oil return time. When the condition that advanced oil return is needed is judged by combining the air temperature information of the future preset time period and the preset oil return frequency reduction critical temperature, the oil return time length and the oil return time are determined according to the air temperature information of the future preset time period and the preset oil return time length model of the compressor, so that the oil return of the compressor is completed before the air temperature is increased to the preset oil return frequency reduction critical temperature, the oil return of the compressor at the highest frequency is ensured, the protection frequency reduction is avoided, and the oil return efficiency is improved.
Drawings
FIG. 1 is a flow chart of an oil return control method of a temperature regulation device in one embodiment;
FIG. 2 is a flow chart of an oil return control method of a temperature regulation device in another embodiment;
FIG. 3 is a schematic diagram of the change law of the daily temperature;
FIG. 4 is a flowchart of an oil return control method of a temperature adjustment device in yet another embodiment;
FIG. 5 is a flowchart of an oil return control method of the temperature adjustment device in yet another embodiment;
FIG. 6 is a block diagram of an oil return control apparatus of a temperature adjusting device in one embodiment;
fig. 7 is a block diagram of an oil return control system of the temperature adjusting device in one embodiment.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.
In one embodiment, as shown in fig. 1, an oil return control method for a temperature adjustment device is provided, which is described by taking the method as an example applied to a controller, and includes the following steps:
step S110: and acquiring temperature information of a future preset time period.
Specifically, considering that the temperature change rule in one day, the temperature is low at night, the temperature starts to rise in the morning, the temperature rises to the highest at about 14 noon or afternoon, then the temperature starts to fall, and the time period from night to morning is the lowest, so the weather prediction technology can be fused, and whether high-temperature weather with difficult oil return occurs in the second day or not is judged at night, so the temperature information of the future preset time period includes the temperature information of the day in the second day, and in the embodiment, the future preset time period is 24 hours in the future. Furthermore, the communication device arranged in the unit of the temperature regulation equipment can directionally receive the transmitted weather data information and transmit the temperature information, namely the parameter with the temperature as the main component, to the controller. Further, the weather data information may be weather data information predicted by a weather bureau.
Step S120: and when the condition of meeting the oil return condition in advance is determined according to the air temperature information of the future preset time period and the preset oil return frequency reduction critical temperature, determining the oil return time length according to the air temperature information of the future preset time period and the preset compressor oil return time length model.
Specifically, in the present embodiment, the advance oil return condition is satisfied when it is determined that a temperature greater than the preset oil return down-conversion critical temperature occurs according to the air temperature information of the future preset time period. The method comprises the steps of judging whether high-temperature weather with difficult oil return occurs in the next day, wherein the preset oil return frequency reduction critical temperature means that compressor oil return cannot be maintained for a long time when the air temperature reaches the temperature, and frequency reduction occurs.
Step S130: and determining oil return time according to the oil return time length and the temperature information of a future preset time period, and controlling a compressor of the temperature regulating equipment to start oil return at the oil return time according to the oil return time.
Specifically, after the oil return time is determined, the oil return time can be determined by combining the corresponding relationship of the air temperature time in the air temperature information of the future preset time period, so that full-frequency oil return is realized before the temperature of the compressor is increased to the preset oil return frequency reduction critical temperature in the daytime, and the oil return efficiency is high.
According to the oil return control method of the temperature adjusting equipment, when the advance oil return is needed to be carried out by combining the air temperature information of the future preset time period and the preset oil return frequency reduction critical temperature, the oil return time length and the oil return time are determined according to the air temperature information of the future preset time period and the preset oil return time length model of the compressor, so that the oil return of the compressor is completed before the air temperature is increased to the preset oil return frequency reduction critical temperature, the oil return of the compressor with the highest frequency is ensured, the protection frequency reduction is avoided, and the oil return efficiency is improved.
In one embodiment, as shown in FIG. 2, step S120 includes step S122 and step S124.
Step S122: and obtaining the average value and the duration of the air temperature above the preset oil return frequency reduction critical temperature in the future preset time period according to the air temperature information of the future preset time period.
Specifically, the daily air temperature change rule is as shown in fig. 3, T0 is a preset oil return frequency reduction critical temperature, when the air temperature reaches the temperature, the full-frequency oil return of the unit cannot be maintained for a long time, and frequency reduction occurs, an average value △ T of the air temperatures above the preset oil return frequency reduction critical temperature in the future preset time period is obtained according to the air temperature information of the future preset time period, namely the average value of the air temperatures between the time T1 and the time T2 in the schematic diagram, the time T1 corresponds to the time when the temperature first rises to the preset oil return frequency reduction critical temperature in the future preset time period, and the duration T of the air temperatures above the preset frequency reduction critical temperature in the future preset time period is obtained according to the air temperature information of the future preset time period, namely the time from the time T1 to the time T2 in.
Step S124: and determining the oil return time according to the average value and the duration of the air temperatures above the preset oil return frequency reduction critical temperature in the future preset time period and a preset compressor oil return time model.
Specifically, in this implementation, the preset compressor oil return time duration model specifically is:
tH＝(△T-T0)*t*(1+C)*k+tb
wherein tH is an oil return duration, T0 is a preset oil return frequency reduction critical temperature, △ T is an average value of temperatures above the preset oil return frequency reduction critical temperature in a future preset time period, T is a duration of temperatures above the preset oil return frequency reduction critical temperature in the future preset time period, k is a correction coefficient, C is a ratio of the capacity of the silent mode internal machine to the installed total capacity of the internal machine, and tb is a standard oil return mode maintaining duration.
Specifically, the oil return is not good too early and too late, more oil needs to be returned in advance when the oil carrying amount of the unit is different and the high-temperature duration is longer under different working conditions, the model is created as a preset compressor oil return duration model, the temperature information comprises the temperature corresponding to each moment of the preset future duration, the daily temperature change rule is as shown in 3, T0 refers to the oil return frequency reduction critical temperature, the temperature cannot be maintained for a long time when reaching the full frequency of the unit and the oil return is low in temperature, C △ T refers to the average value of the temperatures above T0, namely the average value of the temperatures from the time T1 to the time T2 in the diagram, C refers to the high-temperature duration, namely the time duration from the time T1 to the time T2 in the diagram, h, C refers to the proportion of the capacity of the silent mode indoor unit to the total capacity of the installed unit, k is a correction coefficient, a constant, tb is determined through experiments, the time duration of the standard oil return mode is maintained, and further, the oil return time of the indoor unit is set to the silent mode more the night, the night oil return time of the indoor unit is combined with the longer the oil return mode.
In one embodiment, as shown in FIG. 4, step S130 includes step S132 and step S134.
Step S132: and determining the moment corresponding to the preset oil return frequency reduction critical temperature according to the air temperature information of the future preset time period. Specifically, the time T1 corresponding to the temperature T0 can be determined according to the air temperature information of the future preset time period.
Step S134: and determining oil return time according to the oil return time and the time corresponding to the preset oil return frequency reduction critical temperature, and controlling a compressor of the temperature regulating equipment to start oil return at the oil return time according to the oil return time.
Specifically, the corresponding time obtained by corresponding to the time corresponding to the preset oil return frequency reduction critical temperature and advancing the oil return time is the oil return time, that is, for example, the oil return time is 40 minutes, and when the environmental temperature rises to the preset oil return frequency reduction critical temperature at point 9, the oil return is started at point 8 and 20 at least, and the oil return is completed at point 9, so that the unit can maintain no oil return for a longer time.
In one embodiment, step S110 is followed by controlling the oil return of the compressor of the temperature adjustment device according to a preset oil return control parameter when it is determined that the advance oil return condition is not met according to the air temperature information of the future preset time period and the preset oil return down-conversion critical temperature.
Specifically, determining that the advance oil return condition is not met according to the air temperature information of the future preset time period and the preset oil return frequency reduction critical temperature comprises the following steps: when the temperature which is higher than the preset oil return frequency reduction critical temperature is determined not to appear according to the temperature information of the future preset time period, the condition of oil return in advance is not met, namely the oil return of the compressor is normally controlled according to the preset oil return control parameter, and the control is how to control in the past and how to control at present.
In one embodiment, before step S110, the method further comprises: acquiring historical oil return frequency reduction critical temperature; and obtaining the average value of the oil return frequency reduction critical temperature according to the historical oil return frequency reduction critical temperature as the preset oil return frequency reduction critical temperature.
Specifically, the historical oil return frequency reduction critical environment temperature is obtained through data recording, and the average value of the oil return frequency reduction critical temperature is obtained through calculation of the big data platform and serves as the preset oil return frequency reduction critical temperature.
In a detailed embodiment, as shown in fig. 5, weather information of a unit in the future 24 hours is acquired through a unit communication device, a unit oil return frequency reduction critical environment temperature is obtained through data recording and analysis, whether high-temperature weather with difficult oil return, which is greater than the oil return frequency reduction critical environment temperature T0, appears in the daytime in the next day is judged, according to big data and historical data, the unit cannot maintain the highest-frequency oil return at the ring temperature of T0, and if protection frequency reduction occurs, T0 is used as one of judgment conditions, and oil needs to be returned at full frequency before the air temperature rises to T0 (corresponding to time T1); the oil return is not good too early or too late, and the oil carrying amount of the unit is different and the high temperature is continuous under different working conditions
And if the time is longer, more oil needs to be returned in advance, creating a model of (△ T-T0) T (1+ C) k + tb, if high-temperature weather with difficult oil return occurs in the next day, determining the oil return duration according to the model, namely starting oil return at least at the time of (T1-tH), and if no high-temperature weather with more than T0 occurs in the next day, not returning oil in advance and normally controlling the oil return of the compressor.
According to the oil return control of the temperature adjusting equipment, the oil return is carried out in advance by combining the weather prediction technology according to the daily change rule of the air temperature, the highest-frequency oil return of the unit compressor is ensured, the protection and frequency reduction are avoided, the oil return efficiency is improved, and particularly the multi-split oil return problem under the high-drop and long-distance installation environment is solved.
It should be understood that although the various steps in the flowcharts of fig. 1-2, 4 are shown in order as indicated by the arrows, the steps are not necessarily performed in order as indicated by the arrows. The steps are not performed in the exact order shown and described, and may be performed in other orders, unless explicitly stated otherwise. Moreover, at least some of the steps in fig. 1-2, 4 may include multiple sub-steps or multiple stages, which are not necessarily performed at the same time, but may be performed at different times, which are not necessarily performed in sequence, but may be performed in turn or alternately with other steps or at least some of the sub-steps or stages of other steps.
In one embodiment, as shown in fig. 6, an oil return control apparatus of a thermostat is provided, and the apparatus includes a temperature information obtaining module 110, an oil return time period determining module 120, and an oil return control module 130.
The temperature information obtaining module 110 is configured to obtain temperature information of a future preset time period; the oil return duration determining module 120 is configured to determine an oil return duration according to a preset compressor oil return duration model when it is determined that the advance oil return condition is met according to the air temperature information of the future preset time period and the preset oil return frequency reduction critical temperature; the oil return control module 130 is configured to determine an oil return time according to the oil return time length and the temperature information in the future preset time period, and control the compressor of the temperature adjustment device to start oil return at the oil return time according to the oil return time.
In one embodiment, the oil return duration determining module comprises a related parameter determining unit and an oil return duration determining unit, wherein the related parameter determining unit is used for obtaining an average value and a duration of air temperatures above an oil return down-conversion critical temperature preset in a future preset time period according to air temperature information of the future preset time period; the oil return duration determining unit is used for determining the oil return duration according to the average value and the duration of the air temperatures above the oil return down-conversion critical temperature preset in the future preset time period and a preset compressor oil return duration model.
In one embodiment, the oil return control module includes a frequency reduction critical temperature time determination unit and an oil return time determination unit, and the frequency reduction critical temperature time determination unit is configured to determine, according to air temperature information of a future preset time period, a time corresponding to a preset oil return frequency reduction critical temperature; the oil return time determining unit is used for determining oil return time according to the oil return time length and the time corresponding to the preset oil return frequency reduction critical temperature, and controlling the compressor of the temperature adjusting device to start oil return at the oil return time according to the oil return time.
In one embodiment, the air temperature information obtaining module further comprises a normal oil return control module, and the normal oil return control module is configured to control oil return of a compressor of the temperature adjusting device according to a preset oil return control parameter when it is determined that the advance oil return condition is not met according to the air temperature information of the future preset time period and the preset oil return down-conversion critical temperature.
In one embodiment, the air temperature information acquisition module comprises a historical parameter acquisition module and a preset oil return frequency reduction critical temperature module, and the historical parameter acquisition module is used for acquiring a historical oil return frequency reduction critical temperature; the preset oil return frequency reduction critical temperature module is used for obtaining an average value of oil return frequency reduction critical temperatures according to historical oil return frequency reduction critical temperatures and using the average value as the preset oil return frequency reduction critical temperature.
According to the oil return control device of the temperature adjusting equipment, when the advance oil return is needed to be carried out according to the air temperature information of the future preset time period and the preset oil return frequency reduction critical temperature, the oil return time length and the oil return time are determined according to the air temperature information of the future preset time period and the preset oil return time length model of the compressor, so that the oil return of the compressor is completed before the air temperature is increased to the preset oil return frequency reduction critical temperature, the oil return of the compressor with the highest frequency is ensured, the protection frequency reduction cannot occur, and the oil return efficiency is improved.
For specific limitations of the oil return control device of the temperature adjusting device, reference may be made to the above limitations of the oil return control method of the temperature adjusting device, and details are not described here. All or part of each module in the oil return control device of the temperature adjusting equipment can be realized by software, hardware and a combination thereof. The modules can be embedded in a hardware form or independent from a processor in the computer device, and can also be stored in a memory in the computer device in a software form, so that the processor can call and execute operations corresponding to the modules.
In one embodiment, a computer-readable storage medium is provided, having a computer program stored thereon, which when executed by a processor, performs the steps of: acquiring temperature information of a future preset time period; when the condition of advance oil return is met according to the temperature information of a future preset time period and a preset oil return frequency reduction critical temperature, the oil return time length is determined according to the temperature information of the future preset time period and a preset compressor oil return time length model; and determining oil return time according to the oil return time length and the temperature information of a future preset time period, and controlling a compressor of the temperature regulating equipment to start oil return at the oil return time according to the oil return time.
In one embodiment, the computer program when executed by the processor further performs the steps of: obtaining the average value and the duration of the air temperature above the preset oil return frequency reduction critical temperature in the future preset time period according to the air temperature information of the future preset time period; and determining the oil return time according to the average value and the duration of the air temperatures above the preset oil return frequency reduction critical temperature in the future preset time period and a preset compressor oil return time model.
In one embodiment, the computer program when executed by the processor further performs the steps of: determining the moment corresponding to the preset oil return frequency reduction critical temperature according to the air temperature information of the future preset time period; and determining oil return time according to the oil return time and the time corresponding to the preset oil return frequency reduction critical temperature, and controlling a compressor of the temperature regulating equipment to start oil return at the oil return time according to the oil return time.
In one embodiment, the computer program when executed by the processor further performs the steps of: and when the condition that the advance oil return condition is not met is determined according to the air temperature information of the future preset time period and the preset oil return frequency reduction critical temperature, controlling the oil return of the compressor of the temperature regulating equipment according to the preset oil return control parameter.
In one embodiment, the computer program when executed by the processor further performs the steps of: acquiring historical oil return frequency reduction critical temperature; and obtaining the average value of the oil return frequency reduction critical temperature according to the historical oil return frequency reduction critical temperature, and taking the average value as the preset oil return frequency reduction critical temperature.
It will be understood by those of ordinary skill in the art that all or a portion of the processes of the methods of the embodiments described above may be implemented by a computer program that may be stored in a non-volatile computer-readable storage medium, which, when executed, may include the processes of the embodiments of the methods described above, wherein any reference to memory, storage, database, or other medium used in the embodiments provided herein may include non-volatile and/or volatile memory.
In one embodiment, as shown in fig. 7, an oil return control system of a temperature adjustment device includes a controller 210 and a communication device 220, wherein the communication device 220 is connected to the controller 210, and the communication device 220 is configured to receive air temperature information of a future preset time period and send the air temperature information to the controller 210; the controller 210 is configured to obtain temperature information of a future preset time period; when the condition of advance oil return is met according to the temperature information of a future preset time period and a preset oil return frequency reduction critical temperature, the oil return time length is determined according to the temperature information of the future preset time period and a preset compressor oil return time length model; and determining oil return time according to the oil return time length and the temperature information of the future preset time period, and controlling a compressor of the temperature regulating equipment to start oil return at the oil return time according to the oil return time.
Specifically, the specific definition of the oil return control system of the temperature adjusting device may refer to the above definition of the oil return control method of the temperature adjusting device, and is not described herein again.
According to the oil return control system of the temperature adjusting equipment, when the advance oil return is needed to be carried out according to the air temperature information of the future preset time period and the preset oil return frequency reduction critical temperature, the oil return time length and the oil return time are determined according to the air temperature information of the future preset time period and the preset oil return time length model of the compressor, so that the oil return of the compressor is completed before the air temperature is increased to the preset oil return frequency reduction critical temperature, the oil return of the compressor with the highest frequency is ensured, the protection frequency reduction cannot occur, and the oil return efficiency is improved.
An air conditioner comprises the oil return control system of the temperature adjusting device. For specific limitations of the air conditioner, reference may be made to the above limitations of the oil return control method of the temperature adjustment device, and details are not described here.
According to the air conditioner, when the condition that the oil return needs to be carried out in advance is judged by combining the air temperature information of the future preset time period and the preset oil return frequency reduction critical temperature, the oil return time length and the oil return time are determined according to the air temperature information of the future preset time period and the preset oil return time length model of the compressor, so that the oil return of the compressor is completed before the air temperature is increased to the preset oil return frequency reduction critical temperature, the oil return of the compressor can be ensured to be at the highest frequency, the protection frequency reduction cannot occur, and.
The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (11)
1. An oil return control method of a temperature adjustment device, the method comprising:
acquiring temperature information of a future preset time period;
when the condition of meeting the oil return condition in advance is determined according to the air temperature information of the future preset time period and the preset oil return frequency reduction critical temperature, obtaining the average value and the duration of the air temperature above the preset oil return frequency reduction critical temperature in the future preset time period according to the air temperature information of the future preset time period; determining oil return time according to the average value and the duration of the air temperatures above the preset oil return frequency reduction critical temperature in the future preset time period and a preset compressor oil return time model;
and determining oil return time according to the oil return time length and the temperature information of the future preset time period, and controlling a compressor of the temperature regulating equipment to start oil return at the oil return time according to the oil return time.
2. The method according to claim 1, wherein the determining that an advance oil return condition is met according to the air temperature information of the future preset time period and the preset oil return frequency reduction critical temperature comprises:
and when the temperature higher than the preset oil return frequency reduction critical temperature is determined according to the temperature information of the future preset time period, the condition of oil return in advance is met.
3. The method of claim 1, wherein the predetermined oil return down-conversion threshold temperature is a compressor oil return down-conversion of the temperature regulating device that occurs when air temperature reaches the predetermined oil return down-conversion threshold temperature.
4. The method according to claim 1, wherein the preset compressor oil return duration model is specifically:
tH＝(△T-T0)*t*(1+C)*k+tb
wherein tH is an oil return duration, T0 is a preset oil return frequency reduction critical temperature, △ T is an average value of temperatures above the preset oil return frequency reduction critical temperature in a future preset time period, T is a duration of temperatures above the preset oil return frequency reduction critical temperature in the future preset time period, k is a correction coefficient, C is a ratio of the capacity of the silent mode internal machine to the installed total capacity of the internal machine, and tb is a standard oil return mode maintaining duration.
5. The method of claim 1, wherein the determining an oil return time according to the oil return time length and the air temperature information of the future preset time period, and controlling a compressor of the temperature regulation device to start oil return at the oil return time according to the oil return time comprises:
determining the moment corresponding to the preset oil return frequency reduction critical temperature according to the air temperature information of the future preset time period;
and determining oil return time according to the oil return time and the time corresponding to the preset oil return frequency reduction critical temperature, and controlling a compressor of the temperature regulating equipment to start oil return at the oil return time according to the oil return time.
6. The method according to claim 1, wherein said obtaining temperature information for a future preset time period comprises:
and when the condition that the advance oil return condition is not met is determined according to the air temperature information of the future preset time period and the preset oil return frequency reduction critical temperature, controlling the oil return of the compressor of the temperature regulating equipment according to preset oil return control parameters.
7. The method according to claim 1, wherein before obtaining the temperature information for the future preset time period, the method comprises:
acquiring historical oil return frequency reduction critical temperature;
and obtaining the average value of the oil return frequency reduction critical temperature according to the historical oil return frequency reduction critical temperature, and using the average value as the preset oil return frequency reduction critical temperature.
8. An oil return control device of a temperature adjusting apparatus, characterized in that the device comprises:
the temperature information acquisition module is used for acquiring temperature information of a future preset time period;
the oil return duration determining module is used for obtaining the average value and the duration of the air temperature above the preset oil return frequency reduction critical temperature in the future preset time period according to the air temperature information of the future preset time period when the condition that the oil return condition in advance is met is determined according to the air temperature information of the future preset time period and the preset oil return frequency reduction critical temperature; determining oil return time according to the average value and the duration of the air temperatures above the preset oil return frequency reduction critical temperature in the future preset time period and a preset compressor oil return time model;
and the oil return control module is used for determining oil return time according to the oil return time length and the air temperature information of the future preset time period, and controlling a compressor of the temperature regulating equipment to start oil return at the oil return time according to the oil return time.
9. A computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, carries out the steps of the method according to any one of claims 1 to 7.
10. An oil return control system of a temperature adjusting device is characterized by comprising a controller and a communication device, wherein the communication device is connected with the controller,
the communication device is used for receiving temperature information of a future preset time period and sending the temperature information to the controller;
the controller is used for performing multi-split oil return control according to the method of any one of claims 1 to 7.
11. An air conditioner characterized by comprising the oil return control system of the temperature adjusting device according to claim 10.
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| CN110986430B (en) * | 2019-12-31 | 2020-11-10 | 珠海格力电器股份有限公司 | Effective oil return control method and device and air conditioning unit |
| CN113108419B (en) * | 2021-03-15 | 2022-06-17 | 珠海格力电器股份有限公司 | Control method of multi-split air conditioning system |
| CN113654196B (en) * | 2021-07-15 | 2023-03-24 | 青岛海尔空调器有限总公司 | Method for controlling self-cleaning in indoor heat exchanger |
| CN114923273B (en) * | 2022-05-06 | 2023-11-07 | 青岛海信日立空调系统有限公司 | Air conditioning system and control method thereof |
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| US20180340713A1 (en) * | 2018-06-22 | 2018-11-29 | Jack Dowdy, III | Power saver apparatus for refrigeration |
| CN109114844B (en) * | 2018-08-13 | 2020-02-14 | 珠海格力电器股份有限公司 | Oil return control method of air conditioner compressor unit |
| CN109539649B (en) * | 2018-12-04 | 2020-01-24 | 珠海格力电器股份有限公司 | Unit oil return control method and system and multi-split air conditioner |
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