CN114383253B - Air conditioner, control method and device thereof and computer readable storage medium - Google Patents
Air conditioner, control method and device thereof and computer readable storage medium Download PDFInfo
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- CN114383253B CN114383253B CN202011120915.8A CN202011120915A CN114383253B CN 114383253 B CN114383253 B CN 114383253B CN 202011120915 A CN202011120915 A CN 202011120915A CN 114383253 B CN114383253 B CN 114383253B
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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
- F24F11/62—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
- 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
- F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
- F24F11/74—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity
- F24F11/77—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity by controlling the speed of ventilators
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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
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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
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
Abstract
The invention discloses an air conditioner, a control method and a control device thereof, and a computer readable storage medium, wherein the control method of the air conditioner comprises the following steps: after the air conditioner is recovered through abnormal power failure, if a door opening and closing reset control signal is received, determining whether the electric auxiliary heat of the air conditioner is in a working state before power failure; when the air conditioner is determined to be in a working state before power failure, acquiring power failure time from power failure to receiving a door opening and closing reset control signal of the air conditioner; and when the power-down time is less than the first preset time, performing delay door closing control on the opening and closing door of the air conditioner. The invention improves the stability and the safety of the air conditioner.
Description
Technical Field
The present invention relates to the field of air conditioners, and in particular, to an air conditioner, a control method and apparatus thereof, and a computer readable storage medium.
Background
With the development of air conditioning industry, people have increasingly higher performance requirements on energy conservation and comfort of the air conditioner, and sometimes insufficient heating capacity of the air conditioner is caused, so that in order to adapt to high-power heating operation or improve the heating performance of the air conditioner, electric auxiliary heat is additionally arranged in some indoor air conditioning devices, and the electric auxiliary heat and a heat exchanger are utilized to jointly heat indoor air.
In the working process of the air conditioner, abnormal power failure may occur, if the switch door of the air conditioner is closed immediately, the temperature of the electric auxiliary heating surface is still very high at the moment, the temperature in the air conditioner is easily increased rapidly, and abnormal conditions such as deformation, loosening or action of the electric auxiliary heating protector may be caused.
Disclosure of Invention
The invention provides an air conditioner, a control method and a control device thereof, and a computer readable storage medium, aiming at improving the stability and the safety of the air conditioner.
In order to achieve the above object, the present invention provides a control method of an air conditioner, the control method of the air conditioner comprising the steps of:
after the air conditioner is recovered through abnormal power failure, if a door opening and closing reset control signal is received, determining whether the electric auxiliary heat of the air conditioner is in a working state before power failure;
when the air conditioner is determined to be in a working state before power failure, acquiring the power failure time from power failure to receiving the switch door reset control signal of the air conditioner; the method comprises the steps of,
and when the power-down time is less than a first preset time, performing delay door closing control on the opening and closing door of the air conditioner.
Optionally, the control method of the air conditioner further comprises the following steps:
And when the air conditioner is determined to be in a working state before power failure, directly closing a switch door of the air conditioner.
Optionally, the control method of the air conditioner further comprises the following steps:
and when the power-down time is longer than or equal to the first preset time, directly closing a switch door of the air conditioner.
Optionally, after the step of obtaining a power-down time period from power-down to power-down of the air conditioner when the electric auxiliary heat of the air conditioner is in a working state before power-down is determined, the control method of the air conditioner further includes:
and when the power-down time is less than the first preset time, a fan of the air conditioner is also controlled to radiate the electric auxiliary heat.
Optionally, the air conditioner includes an energy storage element, and when it is determined that the electric auxiliary heat is in a working state before power failure, the step of obtaining a power failure time period from power failure to receiving the switch door reset control signal of the air conditioner specifically includes:
detecting a voltage value of the energy storage element after discharging when receiving a door opening and closing reset control signal;
and calculating the power-down time from power down to receiving the switch door reset control signal according to the voltage value after the energy storage element discharges.
The invention also provides a control device of the air conditioner, which comprises a processor, a memory and a control program of the air conditioner stored on the memory and capable of running on the processor, wherein the control program of the air conditioner realizes the steps of the control method of the air conditioner when being executed by the processor.
Optionally, the control device of the air conditioner further comprises an integrated chip, a charge-discharge circuit and an energy storage element; the output end of the integrated chip is connected with the charge-discharge circuit; wherein, the liquid crystal display device comprises a liquid crystal display device,
the integrated chip is used for controlling the charge-discharge circuit to charge the energy storage element when the air conditioner is powered on and works, and controlling the charge-discharge circuit to discharge the energy storage element when the air conditioner is powered off.
Optionally, the charge-discharge circuit includes a unidirectional conduction element and a discharge resistor, an input end of the unidirectional conduction element is connected with an output end of the integrated chip, an output end of the unidirectional conduction element is connected with the energy storage element, and the discharge resistor is parallel connected with the unidirectional conduction element.
Optionally, the control device of the air conditioner further comprises a voltage detection circuit, wherein a detection end of the voltage detection circuit is connected with the energy storage element, and an output end of the voltage detection circuit is connected with a voltage feedback end of the integrated chip; wherein, the liquid crystal display device comprises a liquid crystal display device,
The voltage detection circuit is used for detecting the voltage value of the energy storage element after discharge; the method comprises the steps of,
the integrated chip is further used for calculating the power-down time from power down to receiving the switch door reset control signal according to the voltage value after the energy storage element discharges when the switch door reset control signal is received.
The invention also provides an air conditioner, which comprises a control device of the air conditioner;
alternatively, the steps of the control method of the air conditioner as described above are used.
Optionally, the electric auxiliary heat of the air conditioner is arranged at an air outlet of the air conditioner.
The invention also provides a computer readable storage medium, which is characterized in that the computer readable storage medium stores a control program of an air conditioner, and the control program of the air conditioner realizes the steps of the control method of the air conditioner when being executed by a processor.
According to the control method of the air conditioner, after the air conditioner is recovered through abnormal power failure, if the power-on/power-off reset control signal is received, whether the electric auxiliary heat of the air conditioner is in a working state before power failure is determined, and when the electric auxiliary heat of the air conditioner is in the working state before power failure is determined, the power-off time from power failure of the air conditioner to power failure of the air conditioner after the power-on/power-off reset control signal is received is obtained, so that the power-on/power-off of the air conditioner is controlled in a delayed mode when the power-off time is smaller than the first preset time, and complete heat dissipation of the electric auxiliary heat is ensured. The invention solves the problems that when the air conditioner is abnormally powered down and powered up again, the power is turned down in a short time, the switch door of the air conditioner is automatically closed, the temperature in the closed space is rapidly increased due to the fact that the electric auxiliary heat with very high surface temperature is sealed in the closed environment, the internal plastic parts deform and loose, or the electric auxiliary heat protector acts and the like, so that the air conditioner cannot stably run and is damaged in serious cases.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a flow chart of an embodiment of a control method of an air conditioner according to the present invention;
FIG. 2 is a flow chart of another embodiment of a control method of an air conditioner according to the present invention;
FIG. 3 is a flow chart of a control method of an air conditioner according to another embodiment of the present invention;
FIG. 4 is a flow chart illustrating a control method of an air conditioner according to another embodiment of the present invention;
FIG. 5 is a detailed flowchart of the step S200 in FIG. 1;
FIG. 6 is a schematic diagram of a functional module of an embodiment of a control device of an air conditioner according to the present invention;
fig. 7 is a schematic circuit diagram of a control device of an air conditioner according to an embodiment of the invention
Fig. 8 is a schematic diagram of a terminal structure of an operating environment of a control device of an air conditioner according to an embodiment of the present invention.
Reference numerals illustrate:
| reference numerals | Name of the name | Reference numerals | Name of the |
| 10 | Integrated chip | D1 | |
| 20 | Charging and discharging circuit | R1 | Discharge resistor |
| C1 | Energy storage element |
The achievement of the objects, functional features and advantages of the present invention will be further described with reference to the accompanying drawings, in conjunction with the embodiments.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The invention provides a control method of an air conditioner, which is applied to an air conditioner indoor unit (for example, a wall mounted unit), and the air conditioner can be a split floor type air conditioner, a split wall mounted air conditioner, a ceiling type air conditioner, a movable air conditioner and a window type air conditioner. When the air conditioner is a split floor type air conditioner, a split wall-mounted air conditioner or a ceiling type air conditioner, the air conditioner comprises an air conditioner outdoor unit and an air conditioner indoor unit. When the air conditioner is a split floor type air conditioner, the cross section of the air conditioner indoor unit 100 of the air conditioner may be circular, rectangular, or the like.
In some indoor air conditioning devices, electric auxiliary heat is added, and the electric auxiliary heat and a heat exchanger are utilized to heat indoor air together. The air conditioner is provided with an automatic switch door and has electric auxiliary heating, in the working process of the air conditioner, voltage instability, or loosening of a plug, or unexpected power failure caused by forced power failure of a user and the like can occur, then the air conditioner is powered on in a short time (the electric control board is powered off and reset in the power failure time period), and the switch door of the air conditioner can be automatically reset (closed). When the air conditioner works in a heating mode and is also started to be heated by electric auxiliary heat, namely, in the heating mode, the electric auxiliary heat is controlled to work at the same time, if the air conditioner is powered off accidentally at the moment, then the air conditioner is powered on in a short time (the electric control board is powered off and reset in the period of power failure), and the opening and closing door of the air conditioner can be reset (closed) automatically. If the time is shorter (for example, within a few seconds), the surface temperature of the electric auxiliary heat is still very high, and because the switch door of the air conditioner is automatically closed after being electrified, the inside of the air conditioner is isolated from the outside air, and the electric auxiliary heat with very high surface temperature is sealed in a closed environment, the temperature in the closed space is easily increased rapidly, and the abnormal conditions such as deformation, loosening and action of an internal plastic part or the electric auxiliary heat protector are possibly caused.
In order to solve the above problems, referring to fig. 1, in an embodiment of the present invention, the control method of the air conditioner includes the steps of:
step S100, after the air conditioner is recovered through abnormal power failure, if a door opening and closing reset control signal is received, determining whether the electric auxiliary heat of the air conditioner is in a working state before power failure;
it can be understood that in the running process of the air conditioner, the situation that the user forgets to turn off the air conditioner before going out, directly turns off the power supply main gate, directly pulls out the air conditioner plug and the like may exist, and the situations all affect the normal use of the air conditioner, for example, the user habit setting and important running data stored in the air conditioner are not stored in the memory, so that the user habit setting cannot be accurately known when the air conditioner is started next time. In addition, when the MCU of the air conditioner, for example, the power supply voltage of the singlechip is in an unstable state or is lower than a predefined working voltage range (the reasons for excessively low power supply voltage of the singlechip are many, for example, the bounce of voltage, the overload of load, the energy shortage of the energy storage element, etc.), the singlechip may be in an abnormal working state or even crash. For this reason, a power failure detection function and a low voltage reset function are generally provided, so that when the air conditioner fails, the value of each register in the singlechip memory becomes an initial value, that is, reset. When the power failure is detected, the operation parameters of the air conditioner set by a user before the power failure of the air conditioner are read; and writing the read operation parameters of the air conditioner into a nonvolatile memory for the next power-on of the air conditioner.
The air conditioner is provided with a memory, and the operation parameters in the operation process of the air conditioner can be stored through the memory; the voltage detection circuit can detect the power supply voltage and determine whether the running air conditioner is powered down according to whether the power supply voltage is greater than a power-down voltage threshold value; when the air conditioner is powered off, the MCU of the air conditioner resets, and whether the air conditioner is powered on again or not is detected; and after the air conditioner is powered on again, namely after the air conditioner is recovered through abnormal power failure, reading the operation parameters of the air conditioner when the power failure occurs, and determining the operation state of the air conditioner when the power failure occurs according to the operation parameters, thereby determining the working modes of the air conditioner, such as a refrigerating mode, a heating mode, a defrosting mode, a dehumidifying mode, a dedusting mode, a sterilizing mode and the like. And determining whether the door needs to be reset (closed) when the air conditioner is powered up again according to the running state of the air conditioner when the power is off. And after the abnormal power failure is recovered, the MCU of the air conditioner can be powered on and reset, and a power failure recovery signal is generated. In this way, when the switch door reset control signal is received, that is, when the switch door is in an open state, whether the electric auxiliary heat is in a working state or not is determined when power is off, specifically, the electric auxiliary heat can be determined by reading the operation parameters when power is off or by reading the historical data of the air conditioner, so as to determine whether the electric auxiliary heat works or not, the working time and the like.
Step 200, when the air conditioner is determined to be in a working state before power failure, acquiring power failure time from power failure of the air conditioner to receiving the switch door reset control signal;
in this embodiment, the power-down time of the air conditioner may be determined by an energy storage element, where the energy storage element may be a power supply element that supplies power to the MCU in the air conditioner when power is turned off, or may be a timer set in the air conditioner. Or a filter capacitor on a certain power supply circuit or a signal transmission circuit on an air conditioner electric control board, for example, a power supply circuit for controlling electric auxiliary heating operation.
The power supply element may be a battery, a capacitor, or the like, and may be a device having stored electric energy. The energy storage elements in the above applications have two states, namely, when the air conditioner is powered on, the stored electric energy starts to be stored, and when the air conditioner is powered off, the stored electric energy is consumed.
For example, when the energy storage element is a power supply element for supplying power to an MCU in the air conditioner, if the power supply signal is detected to be switched from mains supply to the power supply of the energy storage element in the running process of the air conditioner, the moment when the power supply signal is switched is recorded as the power-down moment; if the power supply signal is detected to be recovered to the mains supply power supply by the energy storage element, recording the recovery time of the power supply signal as the power-on time; according to the time interval between the power-down time and the power-up time, the power-down time from the power-down of the air conditioner to the power-down time when the switch door reset control signal is received can be confirmed.
Similarly, when the energy storage element is a filter capacitor in the power supply circuit for supplying electricity and auxiliary heat, the air conditioner operates in a heating mode, and when the working condition of electricity and auxiliary heat is started, the power supply circuit starts to supply power for the electricity and auxiliary heat when the electricity and auxiliary heat is started, the filter capacitor starts to charge until full, when the electricity is lost, the electric quantity of the filter capacitor can start to drop, and when the electricity is re-electrified, the filter capacitor can be charged again. If the fact that the electric energy of the filter capacitor starts to decline is detected, recording the moment when the filter capacitor starts to decline as the power-down moment; if the fact that the electric energy of the filter capacitor starts to be changed from falling to rising is detected, recording the moment when the electric energy is changed from falling to rising and is recovered as the power-on moment; according to the time interval between the power-down time and the power-up time, the power-down time from the power-down of the air conditioner to the power-down time when the switch door reset control signal is received can be confirmed.
And step 300, when the power-down time is less than the first preset time, performing delay door closing control on the opening and closing door of the air conditioner.
It can be understood that, in the time interval from power failure to receiving the reset control signal of the switch door, the switch door is in an open state, for example, may be fully opened or half opened, for example, when the switch door is arranged at an angle with the air inlet panel, the air conditioner stops running, that is, stops heating, at this time, outside air can enter the shell, the electric auxiliary heat can release heat outside the shell, the temperature of the electric auxiliary heat can be reduced from the temperature in working, the longer the power failure time is, the lower the residual temperature of the electric auxiliary heat is, and the heat dissipation speed of the electric auxiliary heat is different according to the difference of the indoor environment temperature. If the time interval from power down to re-power up is too short and the ambient temperature is high, the temperature of the electric auxiliary heat is still maintained too high. If the time interval from power down to re-power up is longer and the ambient temperature is lower, the temperature of the electrically assisted heat may have been restored to be comparable to the ambient temperature or to be comparable to the temperature within the housing. The first preset time period may be a time period required from when the power-assisted heat is released from power failure to when the temperature of the power-assisted heat is reduced to a temperature that does not cause deformation of a device made of plastic in the air conditioner. The setting of the first preset duration can also be determined according to the indoor environment temperature, the power during electric auxiliary heating operation, the working duration, the set temperature of the air conditioner during power failure, the opening degree of the switch door and the like, and according to the change of the parameters, the durations of different first preset durations are set. After the power-down time length is obtained, comparing the power-down time length with a first preset time length, if the power-down time length is smaller than the first preset time length, determining that the temperature of the electric auxiliary heat is still higher, not closing the switch door, controlling the switch door to maintain the current state, namely delaying the door closing, and in other embodiments, if the switch door is in an incomplete opening state, controlling the switch door to be completely opened, so that the contact area of outside air and the electric auxiliary heat is increased, and the heat dissipation efficiency of the electric auxiliary heat is improved. The delay time may be set to a first preset duration, that is, from determining that the power-down duration is less than the first preset duration, and then delay the first preset duration. For example, the power-down time of the air conditioner is 1min, the time required for executing the above-mentioned confirmation and judgment steps is 1s (when implemented by a software algorithm, the time can be ignored), the first preset time is 5min, and the delay of the opening and closing of the door is performed for the first preset time 5min, so that the total heat dissipation time of the electric auxiliary heat is 6min+1s at this time, which is longer than the heat dissipation time required by the electric auxiliary heat by 5min, and the electric auxiliary heat temperature can be ensured to be reduced to a safe temperature. The delay time can also be confirmed according to the difference value between the first preset time length and the power-down time length, for example, the first preset time length is 5min, the power-down time length of the air conditioner is 1min, and then the delay time can be set to be 4min. The delay time is specifically set according to the type, the working parameters, etc. of the air conditioner, and is not limited herein.
According to the control method of the air conditioner, after the air conditioner is recovered through abnormal power failure, if the power-on/power-off reset control signal is received, whether the electric auxiliary heat of the air conditioner is in a working state before power failure is determined, and when the electric auxiliary heat of the air conditioner is in the working state before power failure is determined, the power-off time from power failure of the air conditioner to power failure of the air conditioner after the power-on/power-off reset control signal is received is obtained, so that the power-on/power-off of the air conditioner is controlled in a delayed mode when the power-off time is smaller than the first preset time, and complete heat dissipation of the electric auxiliary heat is ensured. The invention solves the problems that when the air conditioner with the electric auxiliary heating function is powered off abnormally and powered on again in a heating mode and the electric auxiliary heating is in a working mode, the power is turned off in a short time, the switch door of the air conditioner is automatically closed, the temperature in the closed space is rapidly increased due to the fact that the temperature in the closed space is very high in the electric auxiliary heat sealing closed environment, the internal plastic part is deformed and loosened, or the electric auxiliary heating protector acts abnormally, and the air conditioner cannot stably run and is easily damaged in severe cases. The invention is beneficial to improving the stability and the safety of the air conditioner.
Referring to fig. 2, in an embodiment, the control method of the air conditioner further includes the steps of:
step 400, when it is determined that the electric auxiliary heat of the air conditioner is not in the working state before power failure, the switch door of the air conditioner is directly closed.
In this embodiment, the fact that the electric auxiliary heat is not in the working state may be that the air conditioner is operated in a non-heating mode, for example, in a cooling mode, a dehumidifying mode, or the like, and the electric auxiliary heat is not in operation at all in the cooling mode, the dehumidifying mode, or the like. Or when the user feels that the air is too hot or the temperature in the room is raised to the comfortable temperature, the electric auxiliary heat is not required to be started, or after the electric auxiliary heat is started, when the temperature in the room is raised to the comfortable temperature, the electric auxiliary heat is manually closed by the user, so that the electric auxiliary heat is heated only through the heat exchanger when power is lost. The above-mentioned condition all need not to dispel the heat to the electricity and assist, can directly close the switch door of falling the air conditioner to stop external cold air, dust, rainwater, harmful object such as mosquito get into the air conditioner in, ensure the safe operation of air conditioner, also can avoid the user to stretch into the casing of air conditioner with the hand in simultaneously for example child damages the spare part of air conditioner, perhaps avoid the spare part of air conditioner to damage the user health, improve the security of air conditioner and user. In some embodiments, the historical working condition of the electric auxiliary heat can be determined according to the historical data stored in the memory, and whether the switch door is closed in time is determined according to the historical working condition of the electric auxiliary heat, for example, the switch door can be directly closed when the electric auxiliary heat is not opened within 1h or longer before power failure, and if the electric auxiliary heat is in a working state 2min before power failure (within any time of a period of time when the electric auxiliary heat is not completely cooled), the switch door can be controlled to be delayed to be closed at the moment so as to ensure that the electric auxiliary heat is completely cooled.
Referring to fig. 3, in an embodiment, the control method of the air conditioner further includes the steps of:
and S500, when the power-down time is longer than or equal to the first preset time, directly closing a switch door of the air conditioner.
In this embodiment, after the power-down time period is obtained, the power-down time period is compared with the first preset time period, if the power-down time period is longer than or equal to the first preset time period, it can be determined that the temperature of the electric auxiliary heat is lower and has been reduced to the safe temperature range, and closing the switch door at this time also does not cause temperature rise in the air conditioner shell, or the rising temperature amplitude is small, and when other components of the air conditioner are not affected, the switch door can be controlled to directly close. For example, the power-down time of the air conditioner is 10min, and when the confirmation and judgment steps are executed, the time required by the confirmation and judgment steps is 1s (when the confirmation and judgment steps are implemented by adopting a software algorithm, the time can be ignored), which is far longer than 5min required by the first preset time, so that the switch door can be immediately closed without radiating electric auxiliary heat, the switch door of the air conditioner can be directly closed, so that external cold air, dust, rainwater, mosquitoes and other harmful substances are prevented from entering the air conditioner, the safe operation of the air conditioner is ensured, and meanwhile, a user such as a child can be prevented from extending hands into a shell of the air conditioner to damage parts of the air conditioner, or the parts of the air conditioner are prevented from damaging the body of the user, and the safety of the air conditioner and the user is improved.
It should be understood that, in the above embodiment, the step S100 and the step S200 may be performed simultaneously, or the step S100 may be performed before the step S200, or the step S200 may be performed before the step S100. That is, the running state of the air conditioner may be obtained first and then the power-down time of the air conditioner may be obtained, or the power-down time of the air conditioner may be obtained first and then the running state of the air conditioner may be obtained, or the running state of the air conditioner and the power-down time may be obtained simultaneously. For example, when the running state is a refrigeration state, the switch door of the air conditioner can be directly closed, and when the power-down time is far longer than the first preset time, the switch door of the air conditioner can also be directly closed. The air conditioner can be confirmed according to the environment temperature, the power-down frequency, the power-down time length of each time, and the like, for example, in the current indoor environment temperature is higher (summer), the air conditioner normally operates in a refrigerating mode, at the moment, the operating mode and the working state of the electric auxiliary heat can be obtained first, once the operating state of the air conditioner is confirmed to be refrigerating, the electric auxiliary heat cannot be started, the switch door can be directly closed, the working state of the electric auxiliary heat does not need to be confirmed, and the power-down time length of the air conditioner does not need to be obtained. Or, the air conditioner is unstable in power consumption environment, is in habitual power failure, and is long in power failure time, so that the power failure time can be obtained first, and once the power failure time reaches the first preset time, the switch door can be directly closed, and the working state of electric auxiliary heating is not required to be confirmed.
Referring to fig. 4, in an embodiment, after the step of obtaining a power-down time period from power-down to receiving the switch door reset control signal when it is determined that the electric auxiliary heat of the air conditioner is in a working state before power-down, the control method of the air conditioner further includes:
and S600, when the power-down time is less than a first preset time, controlling a fan of the air conditioner to radiate the electric auxiliary heat.
In order to further accelerate the heat dissipation efficiency of the electric auxiliary heat, the embodiment can further accelerate the temperature reduction of the electric auxiliary heat through the fan arranged in the air conditioner, and control the fan of the air conditioner to radiate the electric auxiliary heat, wherein the fan can be arranged at the air inlet, the air outlet or the air inlet or the air outlet at the air inlet. The number of fans, the rotating speed of the fans and the like can be set according to the power-down time length, for example, when the power-down time length of the air conditioner is determined to be shorter and the temperature of the electric auxiliary heat is still higher, two fans can be started simultaneously, the rotating speed of the fans is higher, when the power-down time length of the air conditioner is determined to be longer and the temperature of the electric auxiliary heat is reduced, one fan can be started simultaneously at the moment, the rotating speed of the fans is slower, and when the power-down time length or the heat dissipation time length is close to the first preset time length, the fans can be controlled to stop working so as to save electric energy and realize energy conservation and environmental protection.
It can be understood that the control method of the air conditioner can also be applied to the working condition of normal power failure of the air conditioner, for example, when a shutdown signal triggered by a user is received, whether the operation mode and the electric auxiliary heat of the air conditioner work or not is determined, and in the heating mode, the electric auxiliary heat is in the working state, and then the switch door is controlled to be closed in a delayed manner.
Referring to fig. 5, in an embodiment, the air conditioner includes an energy storage element, and step S200, when determining that the electric auxiliary heat is in a working state before power failure, obtaining a power failure duration from power failure to receiving the switch door reset control signal of the air conditioner specifically includes:
step S210, detecting a voltage value of an energy storage element of the air conditioner after discharging when a door opening and closing reset control signal is received;
and step 220, calculating the power-down time from power-down to the power-down time when the switch door reset control signal is received according to the voltage value after the energy storage element is discharged.
In this embodiment, it can be understood that the energy storage element is fully charged in a short time when the air conditioner is in normal operation, and once the air conditioner is powered down, the energy storage element starts to discharge, and when the air conditioner is powered up again, the discharge is stopped. And the voltage value after the discharge of the energy storage element and the discharge time are arranged in a reverse proportion, namely, the larger the voltage value after the discharge of the energy storage element is, the shorter the discharge time is, and the power-down time of the air conditioner is further shorter, otherwise, the smaller the voltage value after the discharge of the energy storage element is, the longer the discharge time is, and the power-down time of the air conditioner is further longer, so that the voltage value when the energy storage element is powered down, namely, the difference value between the voltage value when the energy storage element is full and the voltage value after the discharge is calculated, and the difference value is the discharge voltage value, so that the power-down time can be confirmed according to the functional relation between the discharge voltage value and the power-down time.
The invention also provides a control device of the air conditioner, which comprises a processor, a memory and a control program of the air conditioner stored on the memory and capable of running on the processor, wherein the control program of the air conditioner realizes the steps of the control method of the air conditioner when being executed by the processor.
Referring to fig. 6 and 7, in an embodiment, the control device of the air conditioner further includes an integrated chip 10, a charge-discharge circuit 20, and an energy storage element C1; the output end of the integrated chip 10 is connected with the charge-discharge circuit 20; wherein, the liquid crystal display device comprises a liquid crystal display device,
the integrated chip 10 is configured to control the charge-discharge circuit 20 to charge the energy storage element C1 when the power-assisted thermal power-on is performed; and, when the air conditioner is powered down, the charge-discharge circuit 20 is controlled to discharge the energy storage element C1.
In a further embodiment, the control device of the air conditioner further includes a voltage detection circuit, a detection end of the voltage detection circuit is connected with the energy storage element C1, and an output end of the voltage detection circuit is connected with a voltage feedback end of the integrated chip 10; wherein, the liquid crystal display device comprises a liquid crystal display device,
the voltage detection circuit is used for detecting a voltage value of the energy storage element C1 after discharge; the method comprises the steps of,
The integrated chip 10 is further configured to calculate a power-down time period from power-down to power-down when the switch door reset control signal is received according to the voltage value after the energy storage element C1 discharges when the switch door reset control signal is received.
In this embodiment, the integrated chip 10 may be an MCU inside the air conditioner, or may be a processor in a control device of the air conditioner, or may be a memory for storing operation data of the air conditioner, and in the integrated chip 10, an erasable memory module for storing operation parameters of the air conditioner when power is turned off is integrated. The voltage detection circuit is integrated in the integrated chip 10, for example, may be an AD sampling circuit for collecting the energy storage element C1, however, in other embodiments, the voltage detection circuit may also be a circuit formed by using a resistor or other elements, so as to detect the voltages across the energy storage element C1 in real time, and output the voltages to the integrated chip 10. The energy storage element C1 may be an electrolytic capacitor or a patch capacitor, and the capacitance of the energy storage element C1 may be set according to the requirement, specifically set to ensure that the energy storage element C1 can quickly complete charging during power-on operation, and complete resetting of the integrated chip 10, store operation data of an air conditioner, and enter a sleep state during discharging.
When the integrated chip 10 is connected to the voltage source VDD, the integrated chip 10 outputs the connected voltage source VDD to the energy storage element C1 through the charge-discharge circuit 20 to supply power to the energy storage element C1, or a power supply switch is provided in the charge-discharge circuit 20, the integrated chip 10 can control the power supply switch to be turned on, and the charge-discharge circuit 20 outputs the voltage source VDD to the energy storage element C1 to supply power to the energy storage element C1. When the air conditioner is powered down, the energy storage element C1 and the charge-discharge circuit 20 form a discharge loop and supply power to the integrated chip 10 so that the integrated chip 10 can store operation parameters; when the integrated chip 10 is an MCU inside the air conditioner, the integrated chip 10 performs power-down reset under the power supply of the energy storage element C1. In addition, at this time, the integrated chip 10 may enter a low power consumption mode, that is, a sleep mode, so that the current consumed by the integrated chip 10 is rapidly reduced, and the discharge time of the energy storage element C1 is ensured to be prolonged. When the air conditioner is powered up again, the energy storage element C1 stops supplying power, the integrated chip 10 is switched back to the normal mode, and is powered up for reset, and the energy storage element C1 is restored to be charged, so that the above operation is repeated. In this process, the integrated chip 10 can collect the voltage consumed by the energy storage element C1 in the process of self-powering-up after the energy storage capacitor is powered down in real time, and can calculate the difference value to be the discharge voltage value according to the voltage consumed by the energy storage element C1, that is, the difference value between the voltage value when the energy storage element C1 is powered down and the voltage value after the discharge, so that the power-down time of the air conditioner can be confirmed according to the functional relation between the discharge voltage value and the power-down time. Therefore, when the power is turned off, the electric auxiliary heat is in a working state, and the power-off time is smaller than the first preset time, the door opening and closing control is performed on the door opening and closing of the air conditioner, and the electric auxiliary heat is ensured to completely dissipate heat. The invention solves the problems that when the air conditioner is abnormally powered down and powered up again, the power is turned down in a short time, the switch door of the air conditioner is automatically closed, the temperature in the closed space is rapidly increased due to the fact that the electric auxiliary heat with very high surface temperature is sealed in the closed environment, the internal plastic parts deform and loose, or the electric auxiliary heat protector acts and the like, so that the air conditioner cannot stably run and is damaged in serious cases.
Referring to fig. 6 and 7, in an embodiment, the charge-discharge circuit 20 includes a unidirectional conduction element D1 and a discharge resistor R1, an input end of the unidirectional conduction element D1 is connected with an output end of the integrated chip 10, an output end of the unidirectional conduction element D1 is connected with the energy storage element C1, and the discharge resistor R1 is disposed in parallel with the unidirectional conduction element D1.
In this embodiment, the unidirectional conductive element D1 may be a diode, the conduction voltage drop of the diode is usually 0.7V, the voltage drop of the discharge resistor R1 during charging is greater than 0.7V, the diode and the discharge resistor R1 are arranged in parallel, and the integrated chip 10 is connected in parallel with the parallel circuit of the diode and the discharge resistor R1. When the integrated chip 10 is powered on, i.e. when the voltage source VDD is on, the resistance of the diode is much smaller than the discharge resistance R1, and the discharge resistance R1 is bypassed, and the current charges the energy storage element C1 through the diode. When the air conditioner is powered down, the energy storage element C1 starts to discharge, and the electric energy of the energy storage element C1 is turned off reversely due to the unidirectional conduction function of the diode, and at this time, the current output by the energy storage element C1 passes through the discharge resistor R1 and then flows to the chip to discharge, so as to supply power to the integrated chip 10. The discharging resistor R1 can also play a role in limiting current, protect the chip, and avoid damage to the chip due to overlarge current output to the integrated chip 10. In the embodiment, after the air conditioner is started, the energy storage element C1 is charged through the integrated chip 10 and the charging diode, when power is turned off, the integrated chip 10 records the current working mode of the air conditioner, when power is turned off and power is restored again, the residual voltage value of the energy storage element C1 is detected, the voltage value is high, the electric auxiliary heat is started before power is turned off, and a reset program is started after the fan is powered on to supply the electric auxiliary heat for cooling; the voltage value is high, the electric auxiliary heat is not started before power failure, and a reset program is directly started; the voltage value is low, and the reset program is directly started, namely the switch door is closed.
The invention also provides an air conditioner, which comprises the control device of the air conditioner.
The detailed structure of the control device of the air conditioner can refer to the above embodiment, and will not be described herein again; it can be understood that, because the control device of the air conditioner is used in the air conditioner of the present invention, the embodiments of the air conditioner of the present invention include all the technical schemes of all the embodiments of the control device of the air conditioner, and the achieved technical effects are identical, and are not repeated herein.
The control device of the air conditioner in the embodiment of the invention can be a PC, or can be control device equipment of a movable air conditioner with a display function, such as a smart phone, a tablet personal computer, an electronic book reader, an MP4 (Moving Picture Experts Group Audio Layer IV, dynamic image expert compression standard audio layer 3) player, a portable computer and the like. As shown in fig. 8, the control device of the air conditioner may include a processor 1001 (e.g., CPU), a communication bus 1002, a user interface 1003, a network interface 1004, and a memory 1005. Wherein the communication bus 1002 is used to enable connected communications between these components; the user interface 1003 may include a Display screen (Display), an input unit such as a Keyboard (Keyboard); the network interface 1004 may optionally include a standard wired interface, a wireless interface (e.g., WI-FI interface); the memory 1005 may be a high-speed RAM memory or a stable memory (non-volatile memory), such as a disk memory, and the memory 1005 may alternatively be a storage device independent of the processor 1001.
It will be appreciated by those skilled in the art that the control device structure of the air conditioner of the control device hardware operating environment of the air conditioner shown in fig. 8 is not limiting, and may include more or less components than those illustrated, or may be combined with certain components, or may be arranged with different components.
In the control device of the air conditioner shown in fig. 8, the network interface 1004 is mainly used for connecting to a cloud server, and performing data communication with the cloud server; the network interface 1004 is also used to connect to provide a tamper-proof platform that includes general purpose functional modules for providing various service functions. The user interface 1003 may connect to a client (user side) in data communication with the client; and the processor 1001 may be used to call a control program of the air conditioner stored in the memory 1005, as described above, for each step of a control method of the air conditioner.
In an embodiment, the air conditioner further includes:
the shell is provided with an air inlet and an air outlet;
the switch door is rotatably arranged at the air outlet to open and close the air outlet; the method comprises the steps of,
and the electric auxiliary heater is arranged at the air outlet.
In the embodiment of the invention, the air conditioner comprises a shell, a fan and a heat exchanger, wherein a heat exchange air channel is formed in the shell, and the fan and the heat exchanger are arranged in the heat exchange air channel. The housing generally includes an air inlet panel and an air outlet panel, for example, in a circular cabinet machine, the air inlet panel and the air outlet panel can be enclosed to form an annular housing, and the air inlet panel and the air outlet panel are arc-shaped. In this embodiment, the air inlet panel is connected to the air outlet panel, preferably detachably, for example, by means of a buckle or a screw, so as to facilitate opening the casing of the air conditioner. The air inlet panel is provided with an air inlet, the air outlet panel is provided with an air outlet grating or an air deflector and a switch door, the air deflector can also be used as the switch door, and the switch door can be driven by a driving component, such as a motor and the like, to drive a driven piece corresponding to the switch door to drive the switch door to move relative to the air outlet panel between a closing position for closing the air outlet and an opening position for opening the air outlet. When the air conditioner operates, the switch door can rotate to a position for opening the air outlet, the rotating angle of the switch door can be controlled according to needs, and air after heat exchange with the heat exchanger in the shell can be blown into a room through an air outlet channel in the switch door and a part of the air outlet between the switch door and the side wall of the air outlet. Through the air-out passageway in the switch door, can strengthen the wind-guiding effect of switch door, for example when the switch door rotates to different angular position, this switch door can wind the direction of setting for better. And, switch door when opening the air outlet, switch door, for example wind-guiding strip can separate the air outlet into a plurality of air-out areas for the air-out is softer.
The electric auxiliary heat of the air conditioner can be PTC electric auxiliary heat and an electric heating pipe. The PTC is a semiconductor heating ceramic, when the external temperature is reduced, the resistance value of the PTC is reduced, and the heating value is increased correspondingly. According to the principle, the air conditioner adopting the PTC electric auxiliary heating technology can automatically change the heating value according to the change of the room temperature and the air quantity of the indoor unit, so that the indoor temperature can be properly regulated, and the purpose of rapid and strong heating is achieved. The electric heating tube adopts a magnesium oxide powder which is formed by putting alloy resistance wires in a metal tubular element and filling the periphery of the resistance wires with good heat resistance, insulativity and thermal conductivity. The power of the air conditioner is constant and does not change with the external environment, and the air conditioner is widely applied to auxiliary heating of the air conditioner.
The air conditioner is internally provided with an electric auxiliary heat protector, the electric auxiliary heat protector can be an electric auxiliary heat temperature controller and a fuse on the electric auxiliary heat, and when the temperatures of the electric auxiliary heat temperature controller and the fuse reach the set temperature, the electric auxiliary heat power supply is cut off. Or when the fan system is abnormal or the fan is damaged, in order to prevent the electric auxiliary heat from being burned out, the power supply of the electric auxiliary heat can be cut off when the temperature rises to the set temperature; or when the filter is blocked or shielded, the air with small air quantity is discharged, so that the temperature in the air conditioner is increased, the electric auxiliary heating temperature controller and the fuse act, the power supply is cut off, the electric auxiliary heating dry combustion is prevented from shortening the service life of the electric auxiliary heating, and even a fire disaster can be caused when serious.
When the air conditioner is in a heating mode, a user can select to automatically start or stop the electric auxiliary heat when the air conditioner indoor unit with the electric auxiliary heat for auxiliary electric heating is operated. For example, in the heating mode, when the user feels that the air outlet temperature is insufficient or the room is cold, the auxiliary electric heating is manually turned on, so that the air outlet temperature is increased and the temperature increasing speed in the room is increased; when the user feels that the air outlet is too hot or the temperature in the room has risen to a comfortable temperature, the auxiliary electric heating is manually turned off, and heating is performed only through the heat exchanger. The air conditioner can delay door closing control of the switch door of the air conditioner after the air conditioner is recovered through abnormal power failure and when the air conditioner is determined that the electric auxiliary heat is in a working state before power failure and the power failure time from power failure to receiving the switch door reset control signal is smaller than the first preset time, so that the electric auxiliary heat is ensured to be completely dissipated, and the stability and the safety of the air conditioner are improved.
The present invention also proposes a computer-readable storage medium having stored thereon a control program of an air conditioner, which when executed by a processor, implements the steps of the control method of an air conditioner as described above.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or system. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or system that comprises the element.
The foregoing embodiment numbers of the present invention are merely for the purpose of description, and do not represent the advantages or disadvantages of the embodiments.
From the above description of the embodiments, it will be clear to those skilled in the art that the above-described embodiment method may be implemented by means of software plus a necessary general hardware platform, but of course may also be implemented by means of hardware, but in many cases the former is a preferred embodiment. Based on such understanding, the technical solution of the present invention may be embodied essentially or in a part contributing to the prior art in the form of a software product stored in a storage medium (e.g. ROM/RAM, magnetic disk, optical disk) as described above, comprising instructions for causing a terminal device (which may be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.) to perform the method according to the embodiments of the present invention.
The foregoing description is only of the optional embodiments of the present invention, and is not intended to limit the scope of the invention, and all the equivalent structural changes made by the description of the present invention and the accompanying drawings or the direct/indirect application in other related technical fields are included in the scope of the invention.
Claims (12)
1. The control method of the air conditioner is characterized by comprising the following steps of:
after the air conditioner is recovered through abnormal power failure, if a door opening and closing reset control signal is received, determining whether the electric auxiliary heat of the air conditioner is in a working state before power failure;
when the air conditioner is determined to be in a working state before power failure, acquiring the power failure time from power failure to receiving the switch door reset control signal of the air conditioner; the method comprises the steps of,
and when the power-down time is less than a first preset time, performing delay door closing control on the opening and closing door of the air conditioner.
2. The control method of an air conditioner according to claim 1, wherein the control method of an air conditioner further comprises the steps of:
and when the air conditioner is determined to be in a working state before power failure, directly closing a switch door of the air conditioner.
3. The control method of an air conditioner according to claim 1, wherein the control method of an air conditioner further comprises the steps of:
and when the power-down time is longer than or equal to the first preset time, directly closing a switch door of the air conditioner.
4. The control method of an air conditioner according to claim 1, wherein after the step of obtaining a power-down time period from power-down to power-down of the air conditioner when it is determined that the electric auxiliary heat of the air conditioner is in an operating state before power-down, the control method of the air conditioner further comprises:
and when the power-down time is less than the first preset time, a fan of the air conditioner is also controlled to radiate the electric auxiliary heat.
5. The method for controlling an air conditioner according to any one of claims 1 to 4, wherein the air conditioner includes an energy storage element, and the step of obtaining a power-down time period from power-down to receiving the switch door reset control signal when it is determined that the electric auxiliary heat is in a working state before power-down specifically includes:
detecting a voltage value of the energy storage element after discharging when receiving a door opening and closing reset control signal;
And calculating the power-down time from power down to receiving the switch door reset control signal according to the voltage value after the energy storage element discharges.
6. A control device of an air conditioner, characterized in that the control device of an air conditioner comprises a processor, a memory and a control program of an air conditioner stored on the memory and operable on the processor, wherein the control program of an air conditioner, when executed by the processor, realizes the steps of the control method of an air conditioner according to any one of claims 1 to 5.
7. The control device of the air conditioner according to claim 6, wherein the control device of the air conditioner further comprises an integrated chip, a charge-discharge circuit and an energy storage element; the output end of the integrated chip is connected with the charge-discharge circuit; wherein, the liquid crystal display device comprises a liquid crystal display device,
the integrated chip is used for controlling the charge-discharge circuit to charge the energy storage element when the air conditioner is powered on and works, and controlling the charge-discharge circuit to discharge the energy storage element when the air conditioner is powered off.
8. The air conditioner control device according to claim 7, wherein the charge-discharge circuit includes a unidirectional conduction element and a discharge resistor, an input end of the unidirectional conduction element is connected to an output end of the integrated chip, an output end of the unidirectional conduction element is connected to the energy storage element, and the discharge resistor is disposed in parallel with the unidirectional conduction element.
9. The control device of an air conditioner according to claim 7, further comprising a voltage detection circuit, wherein a detection end of the voltage detection circuit is connected to the energy storage element, and an output end of the voltage detection circuit is connected to a voltage feedback end of the integrated chip; wherein, the liquid crystal display device comprises a liquid crystal display device,
the voltage detection circuit is used for detecting the voltage value of the energy storage element after discharge; the method comprises the steps of,
the integrated chip is further used for calculating the power-down time from power down to receiving the switch door reset control signal according to the voltage value after the energy storage element discharges when the switch door reset control signal is received.
10. An air conditioner comprising the control device of the air conditioner according to any one of claims 6 to 9;
alternatively, the steps of the control method of an air conditioner according to any one of claims 1 to 5 are used.
11. The air conditioner of claim 10, wherein the electric auxiliary heat of the air conditioner is provided at an air outlet of the air conditioner.
12. A computer-readable storage medium, wherein a control program of an air conditioner is stored on the computer-readable storage medium, which when executed by a processor, implements the steps of the control method of an air conditioner according to any one of claims 1 to 5.
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