CN110986224B - Air conditioner, control method thereof and storage medium - Google Patents
Air conditioner, control method thereof and storage medium Download PDFInfo
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- CN110986224B CN110986224B CN201911083363.5A CN201911083363A CN110986224B CN 110986224 B CN110986224 B CN 110986224B CN 201911083363 A CN201911083363 A CN 201911083363A CN 110986224 B CN110986224 B CN 110986224B
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- 238000000034 method Methods 0.000 title claims abstract description 37
- 238000001514 detection method Methods 0.000 claims description 11
- 230000008569 process Effects 0.000 claims description 8
- 239000003507 refrigerant Substances 0.000 abstract description 47
- 230000000694 effects Effects 0.000 abstract description 4
- 238000005057 refrigeration Methods 0.000 description 6
- 230000002159 abnormal effect Effects 0.000 description 5
- 230000008859 change Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 230000010412 perfusion Effects 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 238000004378 air conditioning Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000006467 substitution reaction Methods 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
- F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
- F24F5/0007—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater cooling apparatus specially adapted for use in air-conditioning
- F24F5/001—Compression cycle type
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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
- F24F11/62—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
- F24F11/83—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers
- F24F11/84—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers using valves
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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
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/88—Electrical aspects, e.g. circuits
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/24—Means for preventing or suppressing noise
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/24—Means for preventing or suppressing noise
- F24F2013/247—Active noise-suppression
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Signal Processing (AREA)
- Fuzzy Systems (AREA)
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- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Thermal Sciences (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention relates to the technical field of air conditioners and discloses an air conditioner, a control method of the air conditioner and a storage medium of the air conditioner. The air conditioner comprises a compressor, a condenser, an evaporator, a controller and a throttling device with adjustable throttling degree; the outlet end of the compressor is communicated with the inlet end of the compressor through a condenser, a throttling device and an evaporator in sequence; the controller is used for starting the compressor and adjusting the throttling degree of the throttling device to be a first throttling degree when the air conditioner is started, and adjusting the throttling degree of the throttling device to be a second throttling degree after the high-low pressure difference at the two sides of the throttling device reaches a preset stable state; wherein the second throttle level is higher than the first throttle level. According to the embodiment of the invention, the flow of the refrigerant is intelligently adjusted, so that the resistance of the refrigerant flowing from the high-pressure side to the low-pressure side during the startup and shutdown is reduced, the suction effect of the compressor is further reduced, the problem of high noise during the startup and shutdown is effectively solved, and the use experience of a user is improved.
Description
Technical Field
The invention relates to the technical field of air conditioners, in particular to an air conditioner, a control method of the air conditioner and a storage medium of the air conditioner.
Background
The throttling devices of the household frequency division air conditioner all use capillary tubes, the throttling degree is unchanged, at the moment of starting, the running frequency of the compressor is instantly increased to 50Hz, so that the low pressure is instantly reduced, the refrigerant is instantly evaporated, and the split abnormal sound is generated;
on the R290 refrigerant machine type, because the refrigerant is flammable and explosive, the national standard has strict requirements on the perfusion quantity, and the perfusion quantity of the R290 refrigerant of the machine type with the same refrigeration quantity is only half of that of the R32 refrigerant and 1/3 of the R22 refrigerant, the sound of refrigerant suction is more obvious when the machine is started;
because the fixed frequency machine can not adjust the frequency, the indoor refrigerating capacity can be controlled only by starting and stopping the compressor, so that the indoor temperature can be frequently started and stopped when reaching the temperature set by a user, the noise generated by instantaneous evaporation of a refrigerant frequently appears, the user experience is greatly influenced, and particularly, the comfort during sleep is high, and an effective solution is urgently needed.
Disclosure of Invention
The invention aims to provide an air conditioner, a control method thereof and a storage medium, which solve the problem of high noise of the conventional fixed-frequency air conditioner during startup and shutdown.
In order to achieve the purpose, the invention adopts the following technical scheme:
an air conditioner comprises a compressor, a condenser and an evaporator, and further comprises a controller and a throttling device with adjustable throttling degree;
the outlet end of the compressor is communicated with the inlet end of the compressor through the condenser, the throttling device and the evaporator in sequence;
the controller is used for starting the compressor and adjusting the throttling degree of the throttling device to be a first throttling degree when the air conditioner is started, and adjusting the throttling degree of the throttling device to be a second throttling degree after the high-low pressure difference at the two sides of the throttling device reaches a preset stable state; wherein the second throttle level is higher than the first throttle level.
Optionally, the controller is further configured to adjust the throttling degree of the throttling device to be a first throttling degree when the air conditioner is turned off, and close the compressor after the high-low pressure difference between the two sides of the throttling device reaches a preset stable state.
Optionally, the throttling device comprises a stop valve and a capillary tube connected in parallel;
the controller is specifically configured to control the shutoff valve to open to achieve the first throttle degree and control the shutoff valve to close to achieve the second throttle degree.
Optionally, the throttling device is an electronic expansion valve.
Optionally, the air conditioner further comprises an ambient temperature sensing unit for detecting an ambient temperature and an inner tube temperature sensing unit for detecting an inner tube temperature of the evaporator;
the controller is further used for judging whether the high-low pressure difference on the two sides of the throttling device reaches a preset stable state or not according to the environment temperature and the temperature of the inner pipe.
An air conditioner control method is applied to the air conditioner, and comprises the following steps: when a starting command is received, the compressor is started first, and the throttle degree of the throttling device is adjusted to the first throttle degree; and after the high-low pressure difference at the two sides of the throttling device reaches a preset stable state, adjusting the throttling degree of the throttling device to be the second throttling degree.
Optionally, the control method further includes a shutdown step: when a shutdown instruction is received, firstly adjusting the throttle degree of the throttling device to the first throttle degree; and after the high-low pressure difference at the two sides of the throttling device reaches a preset stable state, closing the compressor.
Optionally, in the starting-up step, the method for determining that the high-low pressure difference at both sides of the throttling device reaches the preset stable state includes:
in the working process of the compressor, the ambient temperature T is collected once every preset time intervalInner ringAnd the inner tube temperature T of the evaporatorInner pipe；
Judging whether the following conditions are met at the same time: t isInner pipe 0-TInner tube i＞A，△ti-△ti-k< B; if so, judging that the current high-low pressure difference reaches a preset stable state;
wherein, T isInner pipe 0Is a preset ambient temperature standard value; the T isInner tube iThe ith detection value of the temperature of the inner tube; the Δ ti= TInner ring i-TInner tube iI-k > 0; the T isInner ring iThe ith detection value of the ambient temperature; a is a preset first temperature value, and B is a preset second temperature value.
Optionally, in the shutdown step, the method for determining that the high-low pressure difference at both sides of the throttling device reaches the preset stable state includes:
in the working process of the compressor, the ambient temperature T is collected once every preset time intervalInner ringAnd the inner tube temperature T of the evaporatorInner pipe；
Judging whether the following conditions are met at present: delta ti-k -△ti< C; if so, judging that the current high-low pressure difference reaches a preset stable state;
wherein C is a preset third temperature value.
A storage medium storing a plurality of instructions adapted to be loaded by a processor to perform the steps of the air conditioner control method according to any one of the above.
Compared with the prior art, the embodiment of the invention has the following beneficial effects:
according to the embodiment of the invention, the flow of the refrigerant is intelligently adjusted, so that the resistance of the refrigerant flowing from the high-pressure side to the low-pressure side during the startup and shutdown is reduced, the suction effect of the compressor is further reduced, the problem of high noise during the startup and shutdown is effectively solved, and the use experience of a user is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.
Fig. 1 is a schematic structural diagram of an air conditioner according to an embodiment of the present invention.
Fig. 2 is a flowchart of a startup control method of an air conditioner according to an embodiment of the present invention.
Fig. 3 is a flowchart of a shutdown control method of an air conditioner according to an embodiment of the present invention.
Detailed Description
In order to make the objects, features and advantages of the present invention more obvious and understandable, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the embodiments described below are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example one
The embodiment of the invention provides a fixed-frequency air conditioner, which reduces the resistance of a refrigerant flowing from a high-pressure side to a low-pressure side during starting by intelligently adjusting the flow of the refrigerant, thereby reducing the suction effect of a compressor during starting of the air conditioner and reducing the noise of the refrigerant generated by instantaneous reduction of low pressure.
Referring to fig. 1, the constant frequency air conditioner according to the embodiment of the present invention includes: the air conditioner comprises a compressor 10, a four-way valve 20, an outdoor heat exchanger 30, a throttling device 40 with adjustable throttling degree, an indoor heat exchanger 50 and a controller.
A first port of the four-way valve 20 is communicated with an outlet end of the compressor 10, a second port of the four-way valve 20 is communicated with a first port of the outdoor heat exchanger 30, a third port of the four-way valve 20 is communicated with the first port of the outdoor heat exchanger 30, and a fourth port of the four-way valve 20 is communicated with an inlet end of the compressor 10; a second port of the outdoor heat exchanger 30 is communicated to a second port of the indoor heat exchanger 50 through a throttle device 40 with adjustable throttle degree.
In the air-conditioning refrigeration state, the first port and the second port of the four-way valve 20 are connected, the third port and the fourth port are connected, and at this time, the refrigerant flows in the four-way valve 20 according to the solid line direction, that is: the compressor 10 discharges a high-temperature and high-pressure refrigerant, and the refrigerant enters the outdoor heat exchanger 30 through the four-way valve 20; the refrigerant releases heat in the outdoor heat exchanger 30, becomes a low-temperature high-pressure refrigerant after releasing heat, and enters the throttling device 40; the refrigerant passing through the throttling device 40 is changed into a low-temperature low-pressure state, the low-temperature low-pressure refrigerant enters the indoor heat exchanger 50 to absorb heat, the refrigerant is changed into a high-temperature low-pressure refrigerant and then enters the compressor 10, and the refrigerant is compressed into a high-temperature high-pressure state by the compressor 10 and then is discharged. In this process, the outdoor heat exchanger 30 serves as a condenser for releasing heat in the refrigerant to the atmosphere; the indoor heat exchanger 50 serves as an evaporator so that the refrigerant absorbs heat from the atmospheric environment.
Under the air conditioner heating state, the first port and the third port of four-way valve 20 switch on, and the second port switches on with the fourth port, and the refrigerant flows according to the dotted line direction in four-way valve 20, promptly: the compressor 10 discharges a high-temperature and high-pressure refrigerant, the high-temperature and high-pressure refrigerant enters the indoor heat exchanger 50 through the four-way valve 20, the refrigerant releases heat in the indoor heat exchanger 50 and becomes a low-temperature and high-pressure refrigerant, the refrigerant enters the throttling device 40, the refrigerant passing through the throttling device 40 becomes a low-temperature and low-pressure state, the low-temperature and low-pressure refrigerant enters the outdoor heat exchanger 30 to absorb heat, the refrigerant becomes a high-temperature and low-pressure refrigerant and then enters the compressor 10, and the compressor 10 compresses the refrigerant into. In this process, the indoor heat exchanger 50 serves as a condenser for releasing heat in the refrigerant to the atmosphere; the outdoor heat exchanger 30 serves as an evaporator so that the refrigerant absorbs heat from the atmospheric environment.
And the controller is used for starting the compressor 10 when the air conditioner is started, adjusting the throttling degree of the throttling device 40 to be a first throttling degree, and adjusting the throttling degree of the throttling device 40 to be a second throttling degree after the high-low pressure difference between the condenser side (namely the high-pressure side) and the evaporator side (namely the low-pressure side) of the throttling device 40 reaches a preset stable state.
Wherein the second throttle level is higher than the first throttle level. Under the first throttling degree, the flow resistance of the refrigerant is small, the refrigerant pumped to the high-pressure side can flow back to the low-pressure side in time, and the high-low pressure difference cannot rise to the conventional refrigeration state, so that the air conditioner is in an abnormal sound prevention state; under the second throttling degree, the refrigerant flow resistance is large, and the high-low pressure difference can gradually rise to the conventional refrigeration state.
The controller is further configured to adjust the throttling degree of the throttling device 40 to a first throttling degree when the air conditioner is turned off, and to turn off the compressor 10 after a high-low pressure difference between a condenser side (i.e., a high-pressure side) and an evaporator side (i.e., a low-pressure side) of the throttling device 40 reaches a preset stable state. At this time, since the high-low pressure difference is small, the refrigerant flow noise of the high-low pressure balance caused by the stop of the compressor 10 is also reduced.
In this embodiment, the throttle device 40 with adjustable throttle shown in fig. 1 includes a stop valve 41 and a capillary tube 42, which are connected in parallel between the indoor heat exchanger 50 and the outdoor heat exchanger 30. At this time, the throttle degree of the capillary tube 42 is a fixed value, and the controller can adjust the throttle degree of the entire throttle device 40 by opening and closing the stop valve 41.
Specifically, the controller may control the stop valve 41 to open to achieve a first smaller throttle degree of the throttling device 40 (in this case, the stop valve 41 and the capillary tube 42 achieve throttling together), and control the stop valve 41 to close to achieve a second larger throttle degree of the throttling device 40 (in this case, the capillary tube achieves throttling alone).
In addition to the throttling means 40 composed of the stop valve 41 and the capillary tube 42 shown in fig. 1, an electronic expansion valve may be used as the throttling means 40, the electronic expansion valve may actively control the throttling degree, and the effect of eliminating the abnormal noise may be achieved by controlling the opening degree of the electronic expansion valve in the above manner.
In addition, the air conditioner of the embodiment further comprises an ambient temperature sensing unit for collecting ambient temperature and an inner tube temperature sensing unit for collecting the temperature of the inner tube of the evaporator. And the controller is also used for judging whether the high-low pressure difference between the high-pressure side and the low-pressure side of the throttling device 40 reaches a preset stable state or not according to the ambient temperature and the temperature of the inner pipe so as to realize intelligent and accurate control.
Example two
Based on the air conditioner provided by the first embodiment, the first embodiment provides a control method, which includes a power-on control step and a power-off control step, and the problem of abnormal sound during power on and power off is solved respectively.
Referring to fig. 2, in the present embodiment, the boot-up control step specifically includes:
And 102, judging whether the high-low pressure difference between the high-pressure side and the low-pressure side of the throttling device 40 reaches a preset stable state, if so, continuing to execute the next step.
And 103, adjusting the throttling degree of the throttling device 40 to a second throttling degree.
Wherein the second throttle level is higher than the first throttle level. Under the first throttling degree, the flow resistance of the refrigerant is small, the refrigerant pumped to the high-pressure side can flow back to the low-pressure side in time, and the high-low pressure difference cannot rise to the conventional refrigeration state, so that the air conditioner is in an abnormal sound prevention state; under the second throttle degree, the refrigerant flow resistance is large, and the high-low pressure difference can gradually rise to a conventional refrigeration state or a heating state.
In the above-mentioned startup control step, the method for determining whether the high-low pressure difference between the high-pressure side and the low-pressure side of the throttling device 40 reaches the preset stable state includes:
in the working process of the compressor 10, the ambient temperature T is collected once every preset time intervalInner ringAnd the inner tube temperature T of the evaporatorInner pipe；
Judging whether the following conditions are met at the same time: t isInner pipe 0-TInner tube i＞A，△ti-△ti-k< B; and if so, judging that the current high-low pressure difference reaches a preset stable state.
Wherein, TInner pipe 0The preset ambient temperature standard value can be set as a detection value of the ambient temperature at the starting moment of the air conditioner; t isInner tube iThe ith detection value of the temperature of the inner tube; delta ti= TInner ring i-TInner tube i，i-k＞0；TInner ring iThe ith detection value of the ambient temperature; a is a preset first temperatureThe value (which may be 3 ℃) is a predetermined second temperature value (which may be 1 ℃).
Referring to fig. 3, in the present embodiment, the shutdown control step specifically includes:
In the shutdown control step, the method for determining whether the high-low pressure difference between the high-pressure side and the low-pressure side of the throttling device 40 reaches the preset stable state includes:
in the working process of the compressor 10, the ambient temperature T is collected once every preset time intervalInner ringAnd the inner tube temperature T of the evaporatorInner pipe；
Judging whether the current condition is met: delta ti-k -△ti< C; and if so, judging that the current high-low pressure difference reaches a preset stable state.
Wherein C is a preset third temperature value (which may be 3 ℃).
It should be noted that, in the method for determining whether the temperature of the inner tube reaches the preset stable state, in addition to the manner of using the temperature of the inner tube and the ambient temperature as two determination indexes, the method can be simplified to use only the temperature of the inner tube as a determination index, and when the temperature of the inner tube does not change or the change amplitude reaches a certain threshold, the method determines to enter the preset stable state, so as to reduce the computation amount.
EXAMPLE III
It will be understood by those skilled in the art that all or part of the steps in the method of the second embodiment may be implemented by instructions or by controlling related hardware, and the instructions may be stored in a computer readable storage medium and loaded and executed by a processor.
To this end, embodiments of the present invention further provide a storage medium, in which a plurality of instructions are stored, and the instructions can be loaded by a processor to execute the steps in the air conditioner control method according to one embodiment of the present invention.
Wherein the storage medium may include: read Only Memory (ROM), Random Access Memory (RAM), magnetic or optical disks, and the like.
The above-mentioned embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. An air conditioner comprises a compressor, a condenser and an evaporator, and is characterized by further comprising a controller and a throttling device with adjustable throttling degree;
the outlet end of the compressor is communicated with the inlet end of the compressor through the condenser, the throttling device and the evaporator in sequence;
the controller is used for starting the compressor and adjusting the throttling degree of the throttling device to be a first throttling degree when the air conditioner is started, and adjusting the throttling degree of the throttling device to be a second throttling degree after the high-low pressure difference at the two sides of the throttling device reaches a preset stable state; wherein the second throttle level is higher than the first throttle level;
the method for judging whether the high-low pressure difference on the two sides of the throttling device reaches the preset stable state comprises the following steps:
judging whether the following conditions are met at the same time: t isInner pipe 0-TInner tube i＞A，△ti-△ti-k< B; if so, judging that the current high-low pressure difference reaches a preset stable state;
wherein, T isInner pipe 0Is a preset ambient temperature standard value; the T isInner tube iThe ith detection value of the temperature of the inner pipe of the evaporator is obtained; the Δ ti= TInner ring i-TInner tube iI-k > 0; the T isInner ring iIs the ith detection value of the ambient temperature,. DELTA.ti-kIs TInner ring i-k-TInner tube i-k，TInner ring i-kIs the i-k times of detection of the ambient temperature, TInner tube i-kThe i-k detection value of the temperature of the inner tube of the evaporator is obtained; a is a preset first temperature value, and B is a preset second temperature value.
2. The air conditioner according to claim 1, wherein the controller is further configured to adjust the throttling degree of the throttling device to a first throttling degree when the air conditioner is turned off, and to turn off the compressor after a high-low pressure difference between two sides of the throttling device reaches a preset stable state.
3. The air conditioner according to claim 1, wherein the throttling means comprises a shut valve and a capillary tube connected in parallel;
the controller is specifically configured to control the shutoff valve to open to achieve the first throttle degree and control the shutoff valve to close to achieve the second throttle degree.
4. The air conditioner of claim 1, wherein the throttling device is an electronic expansion valve.
5. The air conditioner according to claim 2, further comprising an ambient temperature sensing unit for detecting an ambient temperature and an inner tube temperature sensing unit for detecting an inner tube temperature of the evaporator;
the controller is further used for judging whether the high-low pressure difference on the two sides of the throttling device reaches a preset stable state or not according to the environment temperature and the temperature of the inner pipe.
6. An air conditioner control method applied to the air conditioner of claim 1, the control method comprising the step of: when a starting command is received, the compressor is started first, and the throttle degree of the throttling device is adjusted to the first throttle degree; and after the high-low pressure difference at the two sides of the throttling device reaches a preset stable state, adjusting the throttling degree of the throttling device to be the second throttling degree.
7. The control method according to claim 6, characterized by further comprising a shutdown step of: when a shutdown instruction is received, firstly adjusting the throttle degree of the throttling device to the first throttle degree; and after the high-low pressure difference at the two sides of the throttling device reaches a preset stable state, closing the compressor.
8. The air conditioner control method according to claim 7, wherein in the starting-up step, the method for judging whether the high-low pressure difference on both sides of the throttling device reaches the preset stable state comprises the following steps:
in the working process of the compressor, the ambient temperature T is collected once every preset time intervalInner ringAnd the inner tube temperature T of the evaporatorInner pipe；
Judging whether the following conditions are met at the same time: t isInner pipe 0-TInner tube i＞A，△ti-△ti-k< B; if so, judging that the current high-low pressure difference reaches a preset stable state;
wherein, T isInner pipe 0Is a preset ambient temperature standard value; the T isInner tube iThe ith detection value of the temperature of the inner tube; the Δ ti= TInner ring i-TInner tube iI-k > 0; the T isInner ring iThe ith detection value of the ambient temperature; a is a preset first temperature value, and B is a preset second temperature value.
9. An air conditioner control method according to claim 8, wherein in the shutdown step, the method for judging whether the high-low pressure difference on both sides of the throttling device reaches the preset stable state is as follows:
in the working process of the compressor, the ambient temperature T is collected once every preset time intervalInner ringAnd the inner tube temperature T of the evaporatorInner pipe；
Judging whether the following conditions are met at present: delta ti-k -△ti< C; if so, judging that the current high-low pressure difference reaches a preset stable state;
wherein C is a preset third temperature value.
10. A storage medium storing a plurality of instructions, the instructions being adapted to be loaded by a processor to perform the steps of the air conditioner control method according to any one of claims 6 to 9.
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| CN201911083363.5A CN110986224B (en) | 2019-11-07 | 2019-11-07 | Air conditioner, control method thereof and storage medium |
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| CN201911083363.5A CN110986224B (en) | 2019-11-07 | 2019-11-07 | Air conditioner, control method thereof and storage medium |
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| CN110986224B true CN110986224B (en) | 2021-05-14 |
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