CN111336643B - Air conditioner and control method thereof - Google Patents
Air conditioner and control method thereof Download PDFInfo
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- CN111336643B CN111336643B CN201811550529.5A CN201811550529A CN111336643B CN 111336643 B CN111336643 B CN 111336643B CN 201811550529 A CN201811550529 A CN 201811550529A CN 111336643 B CN111336643 B CN 111336643B
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- 238000000034 method Methods 0.000 title claims abstract description 46
- 238000006243 chemical reaction Methods 0.000 claims description 22
- 238000001514 detection method Methods 0.000 claims description 5
- 238000010438 heat treatment Methods 0.000 abstract description 23
- 230000000694 effects Effects 0.000 abstract description 11
- 238000005057 refrigeration Methods 0.000 abstract description 5
- 239000003921 oil Substances 0.000 description 48
- 239000010687 lubricating oil Substances 0.000 description 23
- 238000001816 cooling Methods 0.000 description 16
- 238000010586 diagram Methods 0.000 description 4
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 239000003507 refrigerant Substances 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 235000003642 hunger Nutrition 0.000 description 1
- 230000037351 starvation Effects 0.000 description 1
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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
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
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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
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
- F24F11/86—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling compressors within refrigeration or heat pump circuits
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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
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
- F25B49/022—Compressor control arrangements
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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
- F24F2110/00—Control inputs relating to air properties
- F24F2110/10—Temperature
- F24F2110/12—Temperature of the outside air
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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
- F25B2600/00—Control issues
- F25B2600/02—Compressor control
- F25B2600/025—Compressor control by controlling speed
- F25B2600/0253—Compressor control by controlling speed with variable speed
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Signal Processing (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Human Computer Interaction (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention relates to an air conditioner and a control method thereof, wherein the control method of the air conditioner comprises the following steps: after the air conditioner is powered on for the first time, starting up and running, acquiring the outdoor environment temperature of the air conditioner; when the outdoor environment temperature is greater than or equal to a first preset temperature threshold value, controlling a compressor of the air conditioner to continuously perform frequency-up operation; and when the outdoor environment temperature is less than a first preset temperature threshold value, controlling the compressor to intermittently perform frequency-up operation. The invention controls the frequency raising mode of the compressor after starting according to the outdoor environment temperature, avoids limiting the operation capacity of the compressor and delaying the frequency raising time of the compressor, not only can ensure the normal oil return of the compressor, but also can greatly shorten the frequency raising time of the compressor when the outdoor temperature is higher, thereby achieving the purpose of quick refrigeration or heating, improving the refrigeration or heating effect of the air conditioner in a short time after starting and improving the use experience of users.
Description
Technical Field
The present invention relates to an air conditioner, and more particularly, to an air conditioner and a control method thereof.
Background
With the increasing living standard, the requirements of people on the quality of life are higher and higher, and the requirements are particularly obvious on household appliances. Taking an air conditioner as an example, in order to meet the requirement of a user for rapid cooling and heating, and thereby bring more comfortable use experience, the conventional air conditioner can generally enable a compressor to rapidly increase the frequency to a higher frequency for operation when just starting the air conditioner. When the compressor is operated, refrigerant in the compressor is rapidly discharged to circulate in the pipe system. In the circulation process, the lubricating oil is discharged out of the compressor along with the refrigerant and enters the pipeline, and the dynamic balance of the lubricating oil in the whole system can be maintained only if the discharged part of the lubricating oil smoothly returns to the compressor (namely, oil return), otherwise, the compressor is damaged due to oil shortage. Most of air conditioners in the market at present adopt an arrangement mode of combining an oil separator and an oil return capillary tube, and lubricating oil discharged from a compressor is separated out through the oil separator and then returns to the compressor through the oil return capillary tube. However, in the case of the inverter air conditioner, as the operating frequency of the compressor increases, the discharge speed/velocity of the lubricating oil becomes faster and faster, and when the discharge speed/velocity of the lubricating oil exceeds the maximum oil return speed/velocity of the oil return capillary tube, the oil shortage phenomenon is easily generated. Therefore, in order to ensure normal oil return, during the process of rapidly raising the frequency of the compressor to a high frequency, the compressor is usually forced to operate for a period of time at a certain fixed frequency (oil return frequency), and the frequency raising is continued after the oil return is stable.
Although normal oil return is guaranteed by the aid of the setting mode, the compressor is forced to continuously run for a period of time on oil return frequency, so that the frequency rising time of the compressor is too long in the process of quick refrigeration and heating during starting of the air conditioner, the speed of the compressor reaching the maximum working frequency is reduced, the time of quick refrigeration and heating after starting of the air conditioner is increased, the effect of quick refrigeration and heating of the air conditioner is influenced, and poor use experience is brought to users. That is to say, the existing air conditioner startup frequency-increasing control method has the problem of poor quick cooling and heating effects caused by long frequency-increasing time.
Disclosure of Invention
An object of the first and third aspects of the present invention is to overcome at least one of the drawbacks of the prior art, and to provide a control method capable of obtaining a good cooling and heating experience in a short time after the air conditioner is turned on.
Another object of the first and third aspects of the invention is to ensure a normal oil return of the compressor.
The second and fourth aspects of the present invention are directed to provide an air conditioner capable of improving the experience of cooling and heating in a short time after starting a machine on the premise of ensuring the normal oil return of a compressor during starting the machine.
According to a first aspect of the present invention, there is provided a control method of an air conditioner, comprising:
after the air conditioner is powered on for the first time, starting up and running, acquiring the outdoor environment temperature of the air conditioner;
when the outdoor environment temperature is greater than or equal to a first preset temperature threshold value, controlling a compressor of the air conditioner to continuously perform frequency-up operation; and when the outdoor environment temperature is smaller than the first preset temperature threshold value, controlling the compressor to intermittently perform frequency-up operation.
Optionally, after the compressor is continuously or intermittently in the up-conversion operation, the control method further includes:
and judging whether the running frequency of the compressor reaches a first preset frequency, and if so, controlling the compressor to stop increasing the frequency.
Optionally, when the outdoor environment temperature is greater than or equal to a first preset temperature threshold, the control method specifically includes:
and controlling the compressor to continuously perform frequency-up operation according to a first preset speed.
Optionally, when the outdoor environment temperature is less than the first preset temperature threshold, the control method specifically includes:
controlling the compressor to perform frequency-up operation according to a second preset speed;
judging whether the operating frequency of the compressor reaches a second preset frequency, if so, controlling the compressor to operate at the second preset frequency for a first preset time and then continue to operate at an increased frequency; wherein
The first preset frequency is greater than the second preset frequency.
According to a second aspect of the present invention, there is provided an air conditioner comprising:
the temperature detection device is configured to obtain the outdoor environment temperature of the air conditioner after the air conditioner is powered on for the first time and started to operate; and
a controller configured to control a compressor of the air conditioner to continuously perform an up-conversion operation when the outdoor ambient temperature is greater than or equal to a first preset temperature threshold value, and to control the compressor to intermittently perform the up-conversion operation when the outdoor ambient temperature is less than the first preset temperature threshold value.
According to a third aspect of the present invention, there is provided a control method of an air conditioner, comprising:
when the air conditioner is turned on after receiving a remote control turn-off signal after being turned off due to receiving the remote control turn-off signal, acquiring the duration of the turn-off of the air conditioner due to receiving the remote control turn-off signal; and
if the air conditioner receives a remote control shutdown signal and the shutdown duration is less than a second preset duration, controlling a compressor of the air conditioner to continuously perform frequency-up operation;
if the air conditioner receives a remote control shutdown signal and the duration of shutdown is more than or equal to the second preset time, then:
acquiring the outdoor environment temperature of the air conditioner;
when the outdoor environment temperature is greater than or equal to a first preset temperature threshold value, controlling the compressor to continuously perform frequency-increasing operation; and when the outdoor environment temperature is smaller than the first preset temperature threshold value, controlling the compressor to intermittently perform frequency-up operation.
Optionally, after the compressor is continuously or intermittently in the up-conversion operation, the control method further includes:
and judging whether the running frequency of the compressor reaches a third preset frequency, if so, controlling the compressor to stop increasing the frequency.
Optionally, when the air conditioner receives a remote shutdown signal and the duration of shutdown is less than the second preset time, or the duration of shutdown is greater than or equal to the second preset time and the outdoor ambient temperature is greater than or equal to the first preset temperature threshold, the control method specifically includes:
and controlling the compressor to continuously perform frequency-up operation according to a third preset speed.
Optionally, when the air conditioner receives a remote shutdown signal and the duration of shutdown is greater than or equal to the second preset duration and the outdoor ambient temperature is less than the first preset temperature threshold, the control method specifically includes:
controlling the compressor to perform frequency-up operation according to a fourth preset speed;
judging whether the running frequency of the compressor reaches a fourth preset frequency, if so, controlling the compressor to run at the fourth preset frequency for a third preset time and then continue to run at an increased frequency; wherein
The third preset frequency is greater than the fourth preset frequency.
According to a fourth aspect of the present invention, there is provided an air conditioner comprising:
the temperature detection device is configured to acquire the outdoor environment temperature of the air conditioner when the air conditioner is turned on after receiving a remote control turn-on signal after being turned off due to receiving the remote control turn-off signal; and
the controller is configured to control the compressor of the air conditioner to continuously perform frequency-increasing operation when the air conditioner receives a remote control shutdown signal and the duration of shutdown is less than a second preset time length, or the air conditioner receives the remote control shutdown signal and the duration of shutdown is greater than or equal to the second preset time length and the outdoor environment temperature is greater than or equal to a first preset temperature threshold value, and the compressor is controlled to perform frequency-increasing operation intermittently when the air conditioner receives the remote control shutdown signal and the duration of shutdown is greater than or equal to the second preset time length and the outdoor environment temperature is less than the first preset temperature threshold value.
The inventors of the present invention have realized that the oil return speed of the lubricating oil is not only related to the operating frequency of the compressor, but also to the ambient temperature. The viscosity of the lubricating oil is affected by the temperature of the environment. When the outdoor environment temperature is lower in winter, the viscosity of the lubricating oil is high, the lubricating oil is difficult to flow and difficult to return. However, when the ambient temperature is high, the lubricating oil has low viscosity and is easy to flow, so that oil is easy to return.
Therefore, in the air conditioner control method provided by the invention, after the air conditioner is started, the frequency raising mode after the compressor is started is controlled according to the temperature of the outdoor environment and/or the shutdown time of the air conditioner, so that the problems that the operation capacity of the compressor is limited and the frequency raising time of the compressor is prolonged by adopting the same mode that the compressor is operated for a period of time at a constant oil return frequency in different external environments are solved. Specifically, when the air conditioner is powered on and started for the first time, the frequency increasing mode after the compressor is started can be directly determined according to the outdoor environment temperature. If the outdoor environment temperature is high (for example, greater than or equal to the first preset temperature threshold), even if the compressor continuously performs frequency raising to the frequency during normal operation at a high frequency raising speed, the problem of unsmooth oil return cannot be caused, so that the mode of continuously performing frequency raising is adopted at the moment, the normal oil return of the compressor can be ensured, the frequency raising time of the compressor can be greatly shortened, the purpose of rapid cooling or heating is achieved, the cooling or heating effect of the air conditioner in a short time after starting the air conditioner is improved, and the use experience of a user is improved. If the outdoor environment temperature is low (for example, less than the first preset temperature threshold), the viscosity of the lubricating oil is high, and therefore, the compressor must be intermittently operated in an up-conversion mode to ensure normal oil return and smooth operation of the compressor.
When the air conditioner is turned on after being turned off due to the fact that the air conditioner receives the remote control turn-off signal, the control method firstly judges the turn-off duration time of the air conditioner before judging the outdoor environment temperature, if the turn-off duration time is short (for example, the turn-off duration time is less than a second preset time length), the temperature of the compressor is not reduced, oil return of the compressor is not influenced no matter the outdoor environment temperature is high or low, and therefore the compressor can be controlled to continuously increase the frequency to the frequency of normal operation at a high frequency increasing speed at the moment, and good refrigerating or heating effects are guaranteed. If the shutdown duration is long (for example, greater than or equal to a second preset duration), the frequency increasing mode of the compressor can be controlled according to the judgment mode that the air conditioner is powered on and started for the first time.
The above and other objects, advantages and features of the present invention will become more apparent to those skilled in the art from the following detailed description of specific embodiments thereof, taken in conjunction with the accompanying drawings.
Drawings
Some specific embodiments of the invention will be described in detail hereinafter, by way of illustration and not limitation, with reference to the accompanying drawings. The same reference numbers in the drawings identify the same or similar elements or components. Those skilled in the art will appreciate that the drawings are not necessarily drawn to scale. In the drawings:
fig. 1 is a schematic flowchart of a control method of an air conditioner according to an embodiment of the present invention;
fig. 2 is a schematic flowchart of a control method of an air conditioner according to a further embodiment of the present invention;
fig. 3 is a schematic structural block diagram of an air conditioner according to an embodiment of the present invention;
fig. 4 is a schematic flowchart of a control method of an air conditioner according to another embodiment of the present invention;
fig. 5 is a schematic flowchart of a control method of an air conditioner according to another further embodiment of the present invention;
fig. 6 is a schematic structural block diagram of an air conditioner according to another embodiment of the present invention.
Detailed Description
A first embodiment of the present invention provides a method for controlling an air conditioner, which is used to control a compressor to quickly increase a frequency when the air conditioner is powered on for the first time, so as to ensure normal oil return of the compressor and improve a cooling or heating effect of the air conditioner in a short time after the air conditioner is powered on.
Fig. 1 is a schematic flowchart of a control method of an air conditioner according to an embodiment of the present invention, in which the control method includes:
after the air conditioner is powered on for the first time, starting up and running, acquiring the outdoor environment temperature of the air conditioner; and
when the outdoor environment temperature is greater than or equal to a first preset temperature threshold value, controlling a compressor of the air conditioner to continuously perform frequency-up operation; and when the outdoor environment temperature is less than a first preset temperature threshold value, controlling the compressor to intermittently perform frequency-up operation.
According to the invention, after the air conditioner is powered on for the first time, the frequency increasing mode after the compressor is started is controlled according to the outdoor environment temperature, so that the problems that the operation capacity of the compressor is limited and the frequency increasing time of the compressor is prolonged by adopting the same mode of enabling the compressor to operate for a period of time at a constant oil return frequency under different external environments are solved. If the outdoor environment temperature is high (for example, greater than or equal to the first preset temperature threshold), even if the compressor continuously performs frequency raising to the frequency during normal operation at a high frequency raising speed, the problem of unsmooth oil return cannot be caused, so that the mode of continuously performing frequency raising is adopted at the moment, the normal oil return of the compressor can be ensured, the frequency raising time of the compressor can be greatly shortened, the purpose of rapid cooling or heating is achieved, the cooling or heating effect of the air conditioner in a short time after starting the air conditioner is improved, and the use experience of a user is improved. If the outdoor environment temperature is low (for example, less than the first preset temperature threshold), the viscosity of the lubricating oil is high, and therefore, the compressor must be intermittently operated in an up-conversion mode to ensure normal oil return and smooth operation of the compressor.
As will be understood by those skilled in the art, the first preset temperature threshold is a set value preset in a control system of the air conditioner, which is closely related to the kind of lubricating oil used by the air conditioner, the type of compressor, and the like. When the temperature is higher than a first preset temperature threshold, the viscosity of the lubricating oil is low, and the lubricating oil flows smoothly; when the temperature is lower than the first preset temperature threshold, the viscosity of the lubricating oil is high, and the lubricating oil flows unsmoothly. Therefore, the specific value of the first preset temperature threshold can be set according to the actual situation.
Fig. 2 is a schematic flowchart of a control method of an air conditioner according to a further embodiment of the present invention. In some embodiments, after the compressor is continuously or intermittently up-converted, the control method of the present invention further includes:
and judging whether the running frequency of the compressor reaches a first preset frequency, and if so, controlling the compressor to stop increasing the frequency.
It is understood that the first preset frequency is a normal operation frequency of the compressor of the air conditioner in the set mode, which is less than or equal to a maximum operation frequency of the compressor. When the compressor is raised to the first preset frequency, the compressor is maintained at the first preset frequency to continue running.
In some embodiments, when the outdoor environment temperature is greater than or equal to a first preset temperature threshold, the control method of the present invention specifically includes: and controlling the compressor to continuously perform the frequency-up operation according to a first preset speed. That is, when the outdoor ambient temperature is equal to or greater than the first preset temperature threshold, the compressor may be stably up-converted at a constant rate.
In some alternative embodiments, when the outdoor environment temperature is greater than or equal to the first preset temperature threshold value, the compressor can be controlled to continuously increase the frequency in stages according to a plurality of increasing frequency rates. Specifically, as the compressor is operated, the temperature of the compressor is gradually increased, and thus, the frequency-increasing speed thereof may be gradually increased.
In some embodiments, when the outdoor ambient temperature is less than the first preset temperature threshold, the control method of the present invention specifically includes:
controlling the compressor to perform frequency-up operation according to a second preset speed;
judging whether the running frequency of the compressor reaches a second preset frequency, if so, controlling the compressor to run at the second preset frequency for a first preset time and then continue to run at an increased frequency; wherein
The first predetermined frequency is greater than the second predetermined frequency.
Specifically, when the compressor is frequency-increased to a second preset frequency, the lubricating oil in the compressor is in or is about to be in an oil shortage state, so that the compressor is maintained at the frequency for a period of time to ensure that the compressor is operated in a frequency-increased mode after stable oil return. The second predetermined frequency is the first oil return frequency of the compressor, which is less than the normal operation frequency (i.e. the first predetermined frequency) of the compressor when the air conditioner is in the set mode.
Further, when the compressor continues to perform the frequency-increasing operation for a period of time and reaches the second oil return frequency, the phenomenon that the lubricating oil in the compressor is in or is about to be in an oil shortage state may still occur, and at this time, the compressor also needs to be controlled to maintain the second oil return frequency to operate for a period of time so as to ensure that the frequency-increasing operation is continued after the compressor performs stable oil return.
It will be appreciated that the first predetermined rate of continuous compressor up-conversion and the second predetermined rate of intermittent compressor up-conversion may be the same or different.
Under different setting modes, the outdoor environment temperature is different, and the values of the first preset frequency and the second preset frequency are also different. For example, in both the cooling and heating modes, the first predetermined frequency is different and the second predetermined frequency is different.
A second embodiment of the present invention provides an air conditioner, and fig. 3 is a schematic block diagram of an air conditioner according to an embodiment of the present invention. Referring to fig. 3, the air conditioner 2 includes a compressor 23, a temperature detecting device 21, and a controller 22. The temperature detection device 21 is configured to obtain the outdoor ambient temperature of the air conditioner after the air conditioner is powered on for the first time. The controller 22 is configured to control the compressor 23 of the air conditioner to continuously perform the up-conversion operation when the outdoor ambient temperature is equal to or greater than a first preset temperature threshold value, and to control the compressor 23 to intermittently perform the up-conversion operation when the outdoor ambient temperature is less than the first preset temperature threshold value. Therefore, normal oil return of the compressor 23 can be ensured, and the frequency rising time of the compressor 23 can be greatly shortened when the outdoor environment temperature is high, so that the purpose of rapid cooling or heating is achieved, the cooling or heating effect in a short time after the air conditioner 2 is started is improved, and the use experience of a user is improved.
Further, the controller 22 is further configured to control the compressor 23 to stop the frequency up-conversion after the operating frequency of the compressor 23 reaches the first preset frequency.
Further, the controller 22 is further configured to control the compressor 23 to continuously perform the up-conversion operation at the first preset rate when the outdoor ambient temperature is greater than or equal to the first preset temperature threshold.
Further, the controller 22 is configured to control the compressor to perform the up-conversion operation to a second preset frequency at a second preset rate when the outdoor ambient temperature is less than the first preset temperature threshold, and to continue the up-conversion operation after maintaining the second preset frequency for a first preset time, wherein the first preset frequency is greater than the second preset frequency.
The third embodiment of the present invention also provides a method for controlling an air conditioner, which is used to control a compressor to quickly increase the frequency when the air conditioner is turned on after receiving a remote control power-off signal and then receiving a remote control power-on signal after the air conditioner is turned off due to receiving a remote control power-off signal, so as to improve the cooling or heating effect of the air conditioner in a short time after the air conditioner is turned on while ensuring the normal oil return of the compressor.
Fig. 4 is a schematic flowchart of a control method of an air conditioner according to another embodiment of the present invention. In this embodiment, the control method of the present invention includes:
when the air conditioner is turned on after receiving a remote control turn-off signal after being turned off due to receiving the remote control turn-off signal, acquiring the duration of the turn-off of the air conditioner due to receiving the remote control turn-off signal; and
if the air conditioner receives the remote control shutdown signal and the shutdown duration is less than a second preset duration, controlling a compressor of the air conditioner to continuously perform frequency-up operation;
if the air conditioner receives the remote control shutdown signal and the shutdown duration is more than or equal to a second preset duration, then:
acquiring the outdoor environment temperature of the air conditioner;
when the outdoor environment temperature is greater than or equal to a first preset temperature threshold value, controlling the compressor to continuously perform frequency-increasing operation; and when the outdoor environment temperature is less than a first preset temperature threshold value, controlling the compressor to intermittently perform frequency-up operation.
When the air conditioner is turned on after being turned off due to the fact that the air conditioner receives the remote control turn-off signal, the control method firstly judges the turn-off duration time of the air conditioner before judging the outdoor environment temperature, if the turn-off duration time is short (for example, the turn-off duration time is less than a second preset time length), the temperature of the compressor is not reduced, oil return of the compressor is not influenced no matter the outdoor environment temperature is high or low, and therefore the compressor can be controlled to continuously increase the frequency to the frequency of normal operation at a high frequency increasing speed at the moment, and good refrigerating or heating effects are guaranteed. If the shutdown duration is long (for example, greater than or equal to a second preset duration), the frequency increasing mode of the compressor can be controlled according to the judgment mode that the air conditioner is powered on and started for the first time. That is, if the outdoor environment temperature is high (for example, greater than or equal to the first preset temperature threshold), even if the compressor continuously increases the frequency to the frequency during normal operation at a fast frequency increasing speed, the problem of unsmooth oil return is not caused, so that the adoption of the mode of continuously increasing the frequency can not only ensure the normal oil return of the compressor, but also greatly shorten the frequency increasing time of the compressor, thereby achieving the purpose of quick cooling or heating, improving the cooling or heating effect of the air conditioner in a short time after starting up, and improving the use experience of users. If the outdoor environment temperature is low (for example, less than the first preset temperature threshold), the viscosity of the lubricating oil is high, and therefore, the compressor must be intermittently operated in an up-conversion mode to ensure normal oil return and smooth operation of the compressor.
Fig. 5 is a schematic flowchart of a control method of an air conditioner according to another further embodiment of the present invention. In some embodiments, after the compressor is continuously or intermittently up-converted, the control method of the present invention further includes:
and judging whether the running frequency of the compressor reaches a third preset frequency, and if so, controlling the compressor to stop increasing the frequency.
It is understood that the third preset frequency is a normal operation frequency of the compressor of the air conditioner in the set mode, which is less than or equal to the maximum operation frequency of the compressor.
In some embodiments, when the duration of the shutdown is shorter than a second preset duration after the air conditioner receives the remote shutdown signal, or the duration of the shutdown is longer than or equal to the second preset duration after the air conditioner receives the remote shutdown signal and the outdoor environment temperature is longer than or equal to the first preset temperature threshold, the control method of the present invention specifically includes: and controlling the compressor to continuously perform the frequency-up operation according to a third preset speed. That is, when the air conditioner receives the remote shutdown signal and the duration of shutdown is less than the second preset duration, or the air conditioner receives the remote shutdown signal and the duration of shutdown is greater than or equal to the second preset duration and the outdoor ambient temperature is greater than or equal to the first preset temperature threshold, the compressor may stably increase the frequency at a constant rate.
In some alternative embodiments, when the duration of the shutdown of the air conditioner after receiving the remote shutdown signal is less than the second preset time period, or the duration of the shutdown of the air conditioner after receiving the remote shutdown signal is greater than or equal to the second preset time period and the outdoor ambient temperature is greater than or equal to the first preset temperature threshold, the compressor may be further controlled to continuously increase the frequency in stages according to a plurality of frequency increasing rates.
In some embodiments, when the air conditioner receives the remote control shutdown signal and the duration of shutdown is greater than or equal to a second preset duration and the outdoor environment temperature is less than a first preset temperature threshold, the control method of the present invention specifically includes:
controlling the compressor to perform frequency-up operation according to a fourth preset speed;
judging whether the running frequency of the compressor reaches a fourth preset frequency, if so, controlling the compressor to run at the fourth preset frequency for a third preset time and then continue to run at an increased frequency; wherein
The third predetermined frequency is greater than the fourth predetermined frequency.
Specifically, when the compressor is ramped up to a fourth preset frequency, the lubricating oil in the compressor is or will be in an oil starvation state, so that the compressor is maintained at the frequency for a period of time to ensure that the compressor is ramped up after stable oil return. The fourth preset frequency is the oil return frequency of the compressor, which is less than the normal operation frequency (i.e. the third preset frequency) of the compressor in the set mode of the air conditioner.
Further, when the compressor continues to perform the frequency-increasing operation for a period of time and reaches another oil return frequency, the phenomenon that the lubricating oil in the compressor is in or is about to be in an oil shortage state still may occur, and at this time, the compressor also needs to be controlled to maintain another oil return frequency to perform the operation for a period of time so as to ensure that the frequency-increasing operation is continued after the compressor performs stable oil return.
It will be appreciated that the third predetermined rate of continuous compressor up-conversion and the fourth predetermined rate of intermittent compressor up-conversion may be the same or different.
Under different setting modes, the outdoor environment temperature is different, and the values of the third preset frequency and the fourth preset frequency are also different. For example, in both the cooling and heating modes, the third preset frequency is different and the fourth preset frequency is also different.
A fourth embodiment of the present invention provides an air conditioner, and fig. 6 is a schematic block diagram of an air conditioner according to another embodiment of the present invention. Referring to fig. 6, the air conditioner 4 includes a compressor 43, a temperature detecting device 41, and a controller 42.
The temperature detection device 41 is configured to acquire the outdoor ambient temperature of the air conditioner 4 when the air conditioner is turned on upon receiving a remote turn-on signal after being turned off upon receiving the remote turn-off signal. The controller 42 is configured to control the compressor 43 of the air conditioner 4 to continuously perform the up-conversion operation when the duration of the shutdown of the air conditioner 4 when the remote control shutdown signal is received is less than the second preset time period, or the duration of the shutdown of the air conditioner 4 when the remote control shutdown signal is received is greater than or equal to the second preset time period and the outdoor ambient temperature is greater than or equal to the first preset temperature threshold value, and to control the compressor 43 to intermittently perform the up-conversion operation when the duration of the shutdown of the air conditioner 4 when the remote control shutdown signal is received is greater than or equal to the second preset time period and the outdoor ambient temperature is less than the first preset temperature threshold value.
Further, the controller 42 is further configured to control the compressor 43 to stop the frequency up-conversion when the operation frequency of the compressor 43 reaches the third preset frequency after the compressor 43 is continuously or intermittently frequency up-converted.
Further, the controller 42 is further configured to control the compressor 43 to continuously perform the up-conversion operation at the third preset rate when the duration of the shutdown of the air conditioner after receiving the remote shutdown signal is less than the second preset duration, or the duration of the shutdown of the air conditioner after receiving the remote shutdown signal is greater than or equal to the second preset duration and the outdoor ambient temperature is greater than or equal to the first preset temperature threshold.
Further, the controller 42 is further configured to control the compressor 43 to perform the frequency-up operation to a fourth preset frequency at a fourth preset rate when the air conditioner receives the remote shutdown signal and the shutdown duration is greater than or equal to the second preset duration and the outdoor environment temperature is less than the first preset temperature threshold, and to continue the frequency-up operation after maintaining the fourth preset frequency for a third preset duration, wherein the third preset frequency is greater than the fourth preset frequency.
Thus, it should be appreciated by those skilled in the art that while a number of exemplary embodiments of the invention have been illustrated and described in detail herein, many other variations or modifications consistent with the principles of the invention may be directly determined or derived from the disclosure of the present invention without departing from the spirit and scope of the invention. Accordingly, the scope of the invention should be understood and interpreted to cover all such other variations or modifications.
Claims (5)
1. A method of controlling an air conditioner, comprising:
when the air conditioner is turned on after receiving a remote control turn-off signal after being turned off due to receiving the remote control turn-off signal, acquiring the duration of the turn-off of the air conditioner due to receiving the remote control turn-off signal; and
if the air conditioner receives a remote control shutdown signal and the shutdown duration is less than a second preset duration, controlling a compressor of the air conditioner to continuously perform frequency-up operation;
if the air conditioner receives a remote control shutdown signal and the duration of shutdown is more than or equal to the second preset time, then:
acquiring the outdoor environment temperature of the air conditioner;
when the outdoor environment temperature is greater than or equal to a first preset temperature threshold value, controlling the compressor to continuously perform frequency-increasing operation; and when the outdoor environment temperature is smaller than the first preset temperature threshold value, controlling the compressor to intermittently perform frequency-up operation.
2. The control method according to claim 1,
after the compressor is continuously or intermittently in the up-conversion operation, the control method further includes:
and judging whether the running frequency of the compressor reaches a third preset frequency, if so, controlling the compressor to stop increasing the frequency.
3. The control method according to claim 1,
when the air conditioner receives a remote control shutdown signal and the duration of shutdown is less than the second preset duration, or the duration of shutdown is greater than or equal to the second preset duration and the outdoor environment temperature is greater than or equal to the first preset temperature threshold, the control method specifically includes:
and controlling the compressor to continuously perform frequency-up operation according to a third preset speed.
4. The control method according to claim 1,
when the air conditioner receives a remote control shutdown signal and the duration of shutdown is greater than or equal to the second preset duration and the outdoor environment temperature is less than the first preset temperature threshold, the control method specifically includes:
controlling the compressor to perform frequency-up operation according to a fourth preset speed;
judging whether the running frequency of the compressor reaches a fourth preset frequency, if so, controlling the compressor to run at the fourth preset frequency for a third preset time and then continue to run at an increased frequency; wherein
The third preset frequency is greater than the fourth preset frequency.
5. An air conditioner, comprising:
the temperature detection device is configured to acquire the outdoor environment temperature of the air conditioner when the air conditioner is turned on after receiving a remote control turn-on signal after being turned off due to receiving the remote control turn-off signal; and
the controller is configured to control the compressor of the air conditioner to continuously perform frequency-increasing operation when the air conditioner receives a remote control shutdown signal and the duration of shutdown is less than a second preset time length, or the air conditioner receives the remote control shutdown signal and the duration of shutdown is greater than or equal to the second preset time length and the outdoor environment temperature is greater than or equal to a first preset temperature threshold value, and the compressor is controlled to perform frequency-increasing operation intermittently when the air conditioner receives the remote control shutdown signal and the duration of shutdown is greater than or equal to the second preset time length and the outdoor environment temperature is less than the first preset temperature threshold value.
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| CN112762582B (en) * | 2020-12-31 | 2022-12-23 | 佛山市顺德区美的电子科技有限公司 | Control method of air conditioner and air conditioner |
| CN114963473B (en) * | 2022-04-13 | 2023-10-03 | 宁波奥克斯电气股份有限公司 | Air conditioner control method and air conditioner |
| CN115654671B (en) * | 2022-11-18 | 2024-07-16 | 青岛海尔空调器有限总公司 | Air conditioner control method and device and air conditioner |
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