CN112815471A - Air conditioner self-cleaning control method and device, air conditioner and storage medium - Google Patents

Air conditioner self-cleaning control method and device, air conditioner and storage medium Download PDF

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Publication number
CN112815471A
CN112815471A CN202110215667.3A CN202110215667A CN112815471A CN 112815471 A CN112815471 A CN 112815471A CN 202110215667 A CN202110215667 A CN 202110215667A CN 112815471 A CN112815471 A CN 112815471A
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China
Prior art keywords
temperature
frequency
preset
compressor
current
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Chinese (zh)
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刘为爽
李家旭
郑锴
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Gree Electric Appliances Inc of Zhuhai
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Gree Electric Appliances Inc of Zhuhai
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Publication of CN112815471A publication Critical patent/CN112815471A/en
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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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/50—Control or safety arrangements characterised by user interfaces or communication
    • F24F11/61—Control or safety arrangements characterised by user interfaces or communication using timers
    • 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
    • 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
    • F24F11/67—Switching between heating and cooling modes
    • 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
    • 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
    • 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
    • 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
    • F24F11/87—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling absorption or discharge of heat in outdoor units
    • F24F11/871—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling absorption or discharge of heat in outdoor units by controlling outdoor fans
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2110/00—Control inputs relating to air properties
    • F24F2110/10—Temperature
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2140/00—Control inputs relating to system states
    • F24F2140/20—Heat-exchange fluid temperature
    • 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 application relates to an air conditioner self-cleaning method and device, an air conditioner and a storage medium. The method comprises the following steps: when a self-cleaning sterilization instruction is detected, controlling a compressor to reduce the frequency; when the compressor reduces the frequency to a preset frequency, the four-way valve is opened to execute a heating mode, and the outer fan is synchronously opened to the highest wind gear for running; after delaying the first preset time, adjusting the frequency of the compressor to a target frequency; and entering a self-cleaning sterilization pipe temperature control stage after the frequency of the compressor is adjusted to the target frequency. By adopting the method, the technical effect of normally starting the self-cleaning mode to carry out self-cleaning in a high-temperature area can be achieved.

Description

Air conditioner self-cleaning control method and device, air conditioner and storage medium
Technical Field
The application relates to the technical field of air conditioner self-cleaning, in particular to an air conditioner self-cleaning control method and device, an air conditioner and a storage medium.
Background
With the development of air conditioning technology, the self-cleaning technology can be widely applied to air conditioners at present, self-cleaning on the air conditioners is mainly cleaning of evaporators in the air conditioners, the evaporator self-cleaning function is achieved through the functions of quick refrigeration and quick heating, musty odor can be effectively removed, and part of bacteria can be killed.
Because the pressure is higher, the pressure difference is big, the load is heavier under the high temperature operating mode, open the automatically cleaning in-process, the cross valve is opened and is made the system pressure reduce in the twinkling of an eye, and the load change is great, leads to driving fault easily. Therefore, the self-cleaning technology of the existing air conditioner needs the air conditioner to enter the self-cleaning mode under the normal working condition. Therefore, in the case of high temperature areas, such as sauter, the air conditioner cannot normally use the self-cleaning function.
Disclosure of Invention
The invention provides an air conditioner self-cleaning method, an air conditioner self-cleaning device, an air conditioner and a storage medium, aiming at the problem that the self-cleaning function cannot be normally used in a high-temperature area.
A method of self-cleaning an air conditioner, the method comprising:
when a self-cleaning sterilization instruction is detected, controlling a compressor to reduce the frequency;
when the compressor reduces the frequency to a preset frequency, a four-way valve is started to execute a heating mode, and an external fan is synchronously started to run at the highest wind gear;
after delaying for a first preset time, adjusting the frequency of the compressor to a target frequency;
and entering a self-cleaning sterilization pipe temperature control stage after the frequency of the compressor is adjusted to the target frequency.
In one embodiment, the control method of the temperature control stage of the self-cleaning sterilizing tube comprises the following steps:
after the four-way valve is switched, detecting the temperature of an inner pipe of an evaporator of the internal machine and the internal environment temperature;
determining a current inner tube temperature threshold according to the inner environment temperature;
and when the inner pipe temperature is greater than or equal to the current inner pipe temperature threshold value, starting an inner fan and adjusting the frequency of the compressor and the rotating speed of the inner fan according to the current inner pipe temperature.
In one embodiment, the turning on the inner blower and adjusting the frequency of the compressor and the rotation speed of the inner blower according to the current inner tube temperature includes:
after the inner fan is started for a second preset time, adjusting the frequency of the compressor according to the current inner pipe temperature;
if the current inner pipe temperature is in a preset first target temperature interval, adjusting the rotating speed of the inner fan according to the current inner pipe temperature;
and in the adjusting process of the rotating speed of the inner fan, finishing the self-cleaning sterilization if the current sterilization finishing condition is met.
In one embodiment, the adjusting the frequency of the compressor according to the current inner tube temperature includes:
if the current inner tube temperature is lower than the lower limit temperature of the first target temperature interval, increasing the frequency of the compressor based on a preset first adjusting speed;
if the current inner tube temperature is higher than the upper limit temperature of the first target temperature interval, reducing the frequency of the compressor based on a preset second adjusting speed;
and if the current inner tube temperature is within the first target temperature interval and the preset maintaining time is maintained, maintaining the current frequency of the compressor.
In one embodiment, the adjusting the rotation speed of the inner fan according to the current inner pipe temperature includes:
if the current inner tube temperature is lower than the lower limit temperature of a preset second target temperature interval, reducing the rotating speed of the inner fan based on a preset third adjusting speed; the second target temperature interval is within the first target temperature interval;
if the current inner pipe temperature is higher than the upper limit temperature of the second target temperature interval, the rotating speed of the inner fan is increased based on a preset fourth adjusting speed;
and if the current inner pipe temperature is in the second target temperature interval, maintaining the current rotating speed of the inner fan.
In one embodiment, in the adjusting process of the rotation speed of the inner fan, if it is determined that the sterilization end condition is currently satisfied, the self-cleaning sterilization is ended, including:
in the adjusting process of the rotating speed of the inner fan, if the current inner pipe temperature reaches a preset second target temperature interval and is maintained in the second target temperature interval for a third preset time, finishing self-cleaning sterilization;
or
And in the adjusting process of the rotating speed of the inner fan, if the duration time of the current self-cleaning sterilization stage meets the fourth preset time, finishing the self-cleaning sterilization.
In one embodiment, the determining the current inner tube temperature threshold according to the inner environment temperature includes:
when the internal environment temperature is less than or equal to a preset first internal environment temperature threshold value, taking the preset first internal pipe temperature threshold value as a current internal pipe temperature threshold value;
when the internal environment temperature is greater than the first internal environment temperature threshold and less than or equal to a preset second internal environment temperature threshold, taking the preset second internal tube temperature threshold as the current internal tube temperature threshold;
and when the internal environment temperature is greater than the second internal environment temperature threshold, taking a preset third internal pipe temperature threshold as the current internal pipe temperature threshold.
In one embodiment, when the compressor reduces the frequency to the preset frequency, the four-way valve is turned on after a fifth preset time delay to execute a heating mode, and the external fan is synchronously turned on to the highest wind gear for operation.
In one embodiment, before the four-way valve is turned on, the method further comprises the following steps: and controlling the outer fan to reduce the rotating speed.
An air conditioner self-cleaning apparatus, the apparatus comprising:
the detection module is used for controlling the compressor to reduce the frequency when detecting the self-cleaning sterilization instruction;
the starting control module is used for starting the four-way valve to execute a heating mode and synchronously starting the external fan to run to the highest wind gear when the frequency of the compressor is reduced to the preset frequency;
the adjusting module is used for adjusting the frequency of the compressor to a target frequency after delaying for a first preset time;
a sterilization control module for entering a self-cleaning sterilization pipe temperature control stage after the frequency of the compressor is adjusted to a target frequency
An air conditioner comprising a memory and a processor, wherein the memory stores a computer program, and the processor implements the steps of the air conditioner self-cleaning method when executing the computer program.
A computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, implements the steps of the air conditioner self-cleaning method of any one of the above.
According to the air conditioner self-cleaning method, the air conditioner self-cleaning device, the air conditioner and the storage medium, when a self-cleaning sterilization instruction is detected, the compressor is controlled to reduce the frequency, and when the frequency of the compressor is reduced to the preset frequency, the four-way valve is opened to execute the heating mode, so that the abnormal driving fault of the compressor caused by the overlarge pressure difference due to the overlow external environment temperature is avoided, and the self-cleaning can be stably driven even in a high-temperature area. Meanwhile, after the four-way valve is opened, the outer fan is synchronously opened to the highest wind level for running, partial pressure can be reduced, and therefore the reliable starting of the compressor is further guaranteed.
Drawings
FIG. 1 is a schematic flow chart of a self-cleaning method of an air conditioner according to an embodiment;
FIG. 2 is a flow chart illustrating a control method of a temperature control stage of a self-cleaning sterilization pipe according to an embodiment;
FIG. 3 is a schematic flow chart illustrating a control method of the temperature control stage of the self-cleaning sterilizing tube in another embodiment;
FIG. 4 is a block diagram of an embodiment of a self-cleaning device of an air conditioner;
fig. 5 is an internal structure view of an air conditioner in one embodiment.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.
In one embodiment, as shown in fig. 1, there is provided a self-cleaning method for an air conditioner, which is described by taking a processor or a controller of the air conditioner as an example, and includes the following steps:
and S102, controlling the compressor to reduce the frequency when the self-cleaning sterilization instruction is detected.
The self-cleaning sterilization instruction refers to a received instruction for instructing to start a self-cleaning sterilization mode of the air conditioner. The compressor down-conversion means to reduce the frequency of a compressor of an air conditioner, which is a device that performs a function of compressing a driving refrigerant in a refrigerant circuit of the air conditioner.
Specifically, in a high-temperature area, when a user of the air conditioner needs the air conditioner to perform self-cleaning sterilization, a self-cleaning sterilization instruction is sent to the air conditioner through a remote controller or a wire controller and the like. And then, when the air conditioner detects that a self-cleaning sterilization instruction issued by a user exists, starting a self-cleaning mode, exiting the frosting process of the air conditioner and starting entering a self-cleaning defrosting sterilization stage. The processor of the air conditioner firstly controls the compressor to immediately reduce the frequency to the preset frequency.
In this embodiment, the compressor down-conversion value is preferably a preset frequency Fd, where the preset frequency Fd refers to a low-frequency staying point frequency of the compressor. The optimum value range of the preset frequency Fd is 15HZ to 20HZ, which causes the driving problem due to unstable control of the compressor caused by too low frequency, and causes the driving problem due to too large load variation caused by too high frequency.
And step S104, when the frequency of the compressor is reduced to the preset frequency, the four-way valve is opened to execute a heating mode, and the external fan is synchronously opened to the highest wind gear for running.
The preset frequency is the preset frequency Fd. The four-way valve, a term for a hydraulic valve, is a control valve with four oil ports. The four-way valve is an indispensable component in refrigeration equipment, and the working principle of the four-way valve is that when a solenoid valve coil is in a power-off state, a pilot slide valve moves left under the drive of a right compression spring, high-pressure gas enters a right piston cavity after entering a capillary tube, on the other hand, gas in the left piston cavity is discharged, and due to the fact that pressure difference exists between two ends of a piston, the piston and a main slide valve move left, an exhaust pipe is communicated with an outdoor machine connecting pipe, the other two connecting pipes are communicated, and a refrigeration cycle is formed. When the solenoid valve coil is in the power-on state, the pilot slide valve overcomes the tension of the compression spring and moves to the right under the action of the magnetic force generated by the solenoid coil, high-pressure gas enters the left end piston cavity after entering the capillary tube, on the other hand, the gas in the right end piston cavity is discharged, and because of the pressure difference existing at the two ends of the piston, the piston and the main slide valve move to the right, so that the exhaust pipe is communicated with the indoor machine connecting pipe, and the other two connecting pipes are communicated to form a heating cycle.
Specifically, when the compressor is controlled to reduce the frequency to the preset frequency Fd, the time point when the frequency is reduced to Fd is taken as a mark, after a period of time tS (fifth preset time) is stabilized, the four-way valve is powered on to start the four-way valve, and the started four-way valve executes a heating mode, and the heating mode is ended after the time tS is maintained. Because the pressure is higher under the high-temperature working condition, the pressure difference is large, the compression ratio is large, the load is severely changed due to the heavier load, the system pressure is instantly reduced due to the instant opening of the four-way valve, and the load change is larger. Therefore, the phenomenon that the compressor is extremely unstable due to severe load change in the starting process of the four-way valve under a high-temperature working condition in a starting state is avoided by executing the heating mode, so that the abnormal driving fault of the compressor is avoided. Meanwhile, the problem of start-stop stress strain caused by start-stop machine can be avoided. And when the four-way valve is opened, the outer fan is opened to the highest wind level. Partial pressure is reduced through the highest wind shield, and the reliable starting of the compressor is guaranteed. The t time of the period of time tS depends on the size of the model, and can be set according to the actual model. And uniform time is preferably adopted for synchronizing the embodiment because the synchronization is to ensure that the system pressure is stable. the t range is preferably 5S-15S, and the optimal time is 10S.
And step S106, after delaying the first preset time, adjusting the frequency of the compressor to the target frequency.
The first preset time is the delayed opening time delta T1 of the compressor and is set according to actual conditions. The target frequency is the initial operating frequency Fc of the compressor, and the preferred initial operating frequency Fc of the compressor of this embodiment is 50HZ (i.e. oil return frequency), and then the adjustment is performed in the self-cleaning sterilization temperature control stage.
Specifically, after the outer fan is adjusted to the highest wind gear, the compressor is started after a first preset time DeltaT 1 is delayed to adjust the frequency of the compressor to the target frequency Fc.
And S108, entering a self-cleaning sterilization pipe temperature control stage after the frequency of the compressor is adjusted to the target frequency.
The tube temperature control stage can be understood as a stage for controlling the frequency of the compressor and the rotating speed of the inner fan according to the temperature of the inner tube of the evaporator.
Specifically, after the frequency of the compressor is adjusted to the target frequency Fc, the self-cleaning sterilization pipe temperature control stage can be entered.
According to the self-cleaning method of the air conditioner, when a self-cleaning sterilization instruction is detected, the compressor is controlled to reduce the frequency and the outer fan reduces the rotating speed, and when the frequency of the compressor is reduced to the preset frequency, the four-way valve is opened to execute a heating mode, so that the abnormal driving fault of the compressor caused by the overlarge pressure difference due to the overlow external environment temperature is avoided, and the self-cleaning can be stably driven even in a high-temperature area. Meanwhile, after the four-way valve is opened, the outer fan is synchronously opened to the highest wind level for running, partial pressure can be reduced, and therefore the reliable starting of the compressor is further guaranteed.
In one embodiment, before the four-way valve is turned on, the method further comprises the following steps: and controlling the outer fan to reduce the rotating speed.
Specifically, the reduction of the rotation speed of the outer fan means the reduction of the rotation speed of the outer fan of the air conditioner. The processor of the air conditioner can control the rotating speed of the outer fan to be reduced while controlling the compressor to immediately reduce the frequency to the preset frequency. The rotation speed is preferably reduced to the preset rotation speed R in the embodiment. The preset rotation speed R is preferably between the intermediate gear, i.e. the intermediate value before the maximum and minimum motor rotation speed, representing half of the maximum output air volume. In this embodiment, since the pressure is generally not low when the external loop temperature (external environment temperature) is high, the problem that the subsequent four-way valve is abnormally reversed due to the low pressure before the four-way valve is opened is generally avoided. However, in this embodiment, the compressor is frequency-reduced before the four-way valve is turned on, and when the rotating speed of the external machine is high, the heat exchange amount of the external side is increased, so that the condensing temperature is low, that is, the pressure is reduced, and therefore, the subsequent reversing abnormality of the four-way valve may be caused. Therefore, in the embodiment, before the four-way valve is opened, the outer fan is reduced to the preset R rotating speed to avoid the problem that the subsequent four-way valve is abnormally reversed due to too low pressure before the four-way valve is opened, so that the subsequent four-way valve is normally reversed.
In one embodiment, as shown in fig. 2, a method for controlling a temperature control stage of a self-cleaning sterilizing tube is provided, which includes:
and step S202, detecting the temperature of the inner tube of the internal machine evaporator and the internal environment temperature after the four-way valve is switched.
Specifically, a four-way valve reversing mark position is detectedAnd the four-way valve can be determined to be reversed. And when the four-way valve is reversed, starting to enter a stage of judging the opening time of the inner fan. Firstly, the tube temperature of the internal evaporator is detected to obtain tInner pipe. And, detecting the internal ambient temperature to obtain tInner ring. Then, the inner fan is according to tInner pipeAnd adjusting the starting time. The inner tube temperature refers to the temperature of the evaporator tube of the inner machine, and the inner environment temperature may also be referred to as the inner ambient temperature.
And step S204, determining the current inner tube temperature threshold according to the inner environment temperature.
Wherein, the inner pipe temperature threshold is the evaporator preset pipe temperature. The current inner tube temperature threshold is based on the inner ambient temperature tInner ringThe determined internal tube temperature threshold at the current time point corresponds to different internal tube temperature thresholds, for example, the internal tube temperature threshold may be 45 ℃, 52 ℃ or 38 ℃.
Specifically, when t is detectedInner pipeAnd tInner ringThen according to tInner ringDetermines the current internal tube temperature threshold. It is understood that the inner tube temperature threshold is a function of the inner ambient temperature, i.e. tInner ringIs divided into different tInner ringCorresponding to different internal tube temperature thresholds.
And S206, when the temperature of the inner pipe is greater than or equal to the current inner pipe temperature threshold value, starting the inner fan and adjusting the frequency of the compressor and the rotating speed of the inner fan according to the current inner pipe temperature.
Specifically, after the current inner tube temperature threshold is determined according to the detected inner environment temperature, the detected inner tube temperature t is detectedInner pipeAnd comparing with the current inner tube temperature threshold value. At certain detected internal tube temperature tInner pipeWhen the current inner tube temperature is greater than the current inner tube temperature threshold value, namely the current inner tube temperature tInner pipeAnd when the temperature of the inner pipe is higher than the temperature of the inner pipe corresponding to the internal environment temperature, starting the inner fan. And after the inner fan is started, the frequency of the compressor and the rotating speed of the inner fan are further adjusted according to the current inner pipe temperature.
In the embodiment, the traditional control is not fine enough, so that the pressure of the system is increased quickly, the system is easy to enter the descending limit or protection, and the target temperature cannot be reached in the self-cleaning sterilization process. And this embodiment is opened through fan in the inner tube temperature decision to assurance evaporimeter that can be accurate reaches the target temperature. Meanwhile, the frequency and the rotating speed are controlled according to the inner pipe temperature threshold determined by the inner environment temperature, and accurate temperature control can be achieved according to the environment temperature.
In one embodiment, step S206 includes: after the inner fan is started for a second preset time, adjusting the frequency of the compressor according to the current inner pipe temperature; if the current inner pipe temperature is in a preset first target temperature interval, adjusting the rotating speed of the inner fan according to the current inner pipe temperature; and in the process of adjusting the rotating speed of the internal fan, finishing self-cleaning if the current sterilization finishing condition is met.
The second preset time is a preset duration maintained after the internal fan is turned on, and may be configured according to an actual situation, and 120S is preferred in this embodiment. The first target temperature range is a temperature range in which the temperature of the inner pipe is disposed, and the first target temperature range is preferably [53 ℃, 59 ℃).
Specifically, after the inner fan is turned on for 120S, the process starts to enter a pipe temperature rough adjustment stage. And judging the running range of the frequency of the compressor according to the temperature of the inner pipe, namely adjusting the frequency of the compressor according to the current temperature of the inner pipe. And in the process of adjusting the frequency of the compressor, if the current inner pipe temperature is in a first target temperature interval, namely the current inner pipe temperature is greater than or equal to 53 ℃, and after the first target temperature interval maintains a fixed preset maintaining time (the preset maintaining time is preferably 20S), starting to enter the stage of adjusting the rotating speed of the inner fan. The rotation speed of the inner fan is adjusted according to the current inner pipe temperature. And when the current sterilization finishing condition is determined to be met in the adjusting process of the rotating speed of the internal fan, the self-cleaning sterilization mode can be quitted, and the sterilization is finished.
In one embodiment, adjusting the frequency of the compressor based on the current inner tube temperature comprises: if the current inner tube temperature is lower than the lower limit temperature of the first target temperature interval, increasing the frequency of the compressor based on a preset first adjusting speed; if the current inner tube temperature is higher than the upper limit temperature of the first target temperature interval, reducing the frequency of the compressor based on a preset second adjusting speed; and if the current inner tube temperature is in the first target temperature interval and the preset maintaining time is maintained, maintaining the current frequency of the compressor.
Wherein the first regulation speed and the second regulation speed are speeds configured to regulate a frequency of the compressor. The first modulation rate is a preset rate at which the compressor frequency is increased and the second modulation rate is a configured rate at which the compressor frequency is decreased. In this embodiment, the first adjustment speed is preferably 1Hz/1S, and the second adjustment speed is preferably 2 Hz/1S.
Specifically, if the current inner tube temperature is less than the lower limit temperature of the first target temperature interval, since the first target temperature interval is [53 ℃, 59 ℃ ], the lower limit temperature less than the first target temperature interval means that the frequency is increased at a first adjustment speed of 1HZ/1S when the current inner tube temperature is less than 53 ℃. And if the current inner tube temperature is higher than the upper limit temperature of the first target temperature interval, namely the inner tube temperature is higher than 59 ℃, the frequency of the compressor is reduced at a second adjusting speed of 2 HZ/1S. And if the current inner tube temperature is in the first target temperature interval, namely just 59 ℃ or more and the current inner tube temperature is not less than 53 ℃, if the temperature can be maintained for 20S (preset maintaining time), the current frequency of the compressor is maintained. I.e. without adjusting the frequency of the compressor.
It should be noted that, when raising the compressor frequency and lowering the compressor frequency, in order to ensure the normal operation of the compressor, the raising frequency cannot be higher than the upper limit Fmax of the compressor operation frequency at the highest, and the lowering frequency cannot be lower than the lower limit Fmin of the compressor operation frequency at the lowest.
In this embodiment, since the refrigerant flow rate of the compressor frequency control system has the greatest influence on the tube temperature, the frequency of the compressor is roughly adjusted by the tube temperature, that is, the tube temperature is controlled within plus or minus 3 ℃ of 56 ℃, so that the temperature of the evaporator can be ensured to reach the target value range.
In one embodiment, adjusting the rotation speed of the inner fan according to the current inner pipe temperature includes: if the current inner pipe temperature is lower than the lower limit temperature of the preset second target temperature interval, reducing the rotating speed of the inner fan based on a preset third adjusting speed; if the current inner tube temperature is higher than the upper limit temperature of the second target temperature interval, the rotating speed of the inner fan is increased based on a preset fourth adjusting speed; and if the current inner pipe temperature is in the second target temperature interval, maintaining the current rotating speed of the inner fan.
The second target temperature interval is an interval in which a temperature capable of killing most of bacteria is preset, and since 56 ℃ is a temperature capable of killing most of bacteria, the second target temperature interval in this embodiment is [55 ℃, 57 ℃). The third regulation speed and the fourth regulation speed are speeds for presetting and regulating the rotating speed of the inner fan, the third regulation speed is a speed for increasing the rotating speed of the inner fan, and the fourth regulation speed is a speed for reducing the rotating speed of the inner fan. In the present embodiment, both the third adjustment speed and the fourth adjustment speed are preferably 30 r/5S.
Specifically, if the current inner tube temperature is lower than the lower limit temperature of the second target temperature interval, since the second target temperature interval is [55 ℃, 57 ℃), the lower limit temperature lower than the second target temperature interval means that the rotation speed of the inner fan is reduced at the third adjustment speed of 30r/5S when the current inner tube temperature is less than 55 ℃. And if the current inner pipe temperature is higher than the upper limit temperature of the second target temperature interval, namely the inner pipe temperature is higher than 57 ℃, the rotating speed of the inner fan is increased at a fourth adjusting speed of 30 r/5S. And if the current inner pipe temperature is in a second target temperature interval, namely just 57 ℃ or more and the current inner pipe temperature is not less than 55 ℃, directly maintaining the current rotating speed of the inner fan. I.e. without adjusting the rotational speed of the inner fan.
It should be noted that when the rotating speed of the inner fan is increased and the rotating speed of the inner fan is reduced, in order to ensure the normal operation of the inner fan, the maximum increasing rotating speed cannot be higher than the upper limit Rmax of the rotating speed of the inner fan, and the minimum reducing rotating speed cannot be lower than the lower limit Rmin of the rotating speed of the inner fan.
In the embodiment, because the influence of the rotating speed of the inner fan on the tube temperature of the evaporator is small, the direct current fan can be finely adjusted, so that the inner fan is used for fine adjustment, namely the tube temperature is controlled within plus or minus 1 ℃ of 56 ℃, the system pressure exceeding under the high-temperature working condition can be effectively avoided, the purpose of refining the tube temperature of the inner fan is achieved, and the purpose of precise temperature control and sterilization is achieved.
In one embodiment, step S204 includes: when the internal environment temperature is less than or equal to a preset first internal environment temperature threshold value, taking the preset first internal pipe temperature threshold value as a current internal pipe temperature threshold value; when the internal environment temperature is greater than the first internal environment temperature threshold and less than or equal to a preset second internal environment temperature threshold, taking the preset second internal tube temperature threshold as the current internal tube temperature threshold; and when the internal environment temperature is greater than the second internal environment temperature threshold, taking a preset third internal pipe temperature threshold as the current internal pipe temperature threshold.
Wherein the first inner ring temperature threshold and the second inner ring temperature threshold are preset inner ring temperature thresholds, preferably 25 ℃ and 35 ℃. Since the higher and lower internal ambient temperature, the first internal tube temperature threshold may be 52 ℃, the second internal tube temperature threshold 45 ℃ and the third internal tube temperature threshold 38 ℃ assuming internal tube temperature thresholds including 45 ℃, 52 ℃ and 38 ℃. The second inner tube temperature threshold and the third inner tube temperature threshold may be the same, for example, the second inner tube temperature threshold is 45 ℃.
Specifically, when determining the current inner tube temperature threshold, a first inner loop temperature threshold of 25 ℃ is first obtained. Then, t to be detectedInner ringAnd compared with the first inner ring temperature threshold of 25 ℃. When t isInner ringWhen the temperature is less than or equal to 25 ℃, the current inner tube temperature threshold value is 52 ℃. And 25 ℃ is < tInner ringWhen the temperature is less than or equal to 35 ℃, the current inner tube temperature threshold value is 45 ℃. And 35 ℃ is less than tInner ringWhen the current inner tube temperature threshold is 38 ℃. In addition, according to the model, the temperature can be no less than 25 ℃ < tInner ringNot more than 35 ℃ or not more than 35 ℃ and tInner ringThe current internal tube temperature threshold is 45 ℃.
In the embodiment, the inner tube temperature threshold is determined in different regions through the inner ring temperature, and then the time points of the fan starting and the frequency and rotating speed control are judged according to the inner tube temperature threshold, so that the high-pressure protection caused by the temperature lag of the high-temperature region can be effectively avoided, the high temperature of the low-temperature region is ensured, and the sterilization purpose is achieved.
In one embodiment, in the adjusting process of the rotating speed of the internal air blower, if it is determined that the sterilization end condition is currently satisfied, the self-cleaning is ended, including: in the adjusting process of the rotating speed of the inner fan, if the current inner pipe temperature reaches a preset second target temperature interval and is maintained in the second target temperature interval for a third preset time, finishing self-cleaning sterilization; or in the adjusting process of the rotating speed of the inner fan, if the duration time of the current self-cleaning sterilization stage meets the fourth preset time, the self-cleaning sterilization is finished.
Wherein the third preset time is a preset maintaining time, preferably 1 min. The fourth preset time is also one of the preset conditions for finishing the self-cleaning sterilization, and the fourth preset time is preferably 10 min.
Specifically, in the adjusting process of the rotation speed of the internal fan, if the current internal pipe temperature reaches a preset second target temperature interval [55 ℃, 57 ℃) and the temperature is maintained in the interval for 1min, or the self-cleaning sterilization phase is entered and the self-cleaning sterilization phase lasts for 10min, it indicates that the sterilization end condition is met, and it can be understood that the sterilization effect is reached at present and the sterilization is completed, so the self-cleaning sterilization mode is closed and the self-cleaning sterilization is ended.
In the embodiment, the sterilization temperature and the sterilization time are used as sterilization ending conditions, so that the self-cleaning sterilization mode can be automatically quitted after the sterilization is ended to finish the self-cleaning sterilization.
In one embodiment, as shown in fig. 3, a flow chart of a control method of a temperature control stage of a self-cleaning sterilizing tube is provided, the control method of the temperature control stage of the self-cleaning sterilizing tube is explained in detail based on fig. 3,
specifically, when entering the stage of controlling the temperature energy of the defrosting and sterilizing pipe, after the four-way valve is switched, the temperature t of the inner pipe of the evaporator of the inner machine is detectedInner pipeAnd internal ambient temperature tInner ring. Further according to tInner ringDividing the current inner ring temperature threshold t according to the relation between the current inner ring temperature threshold t and the first inner ring temperature threshold 25 ℃ and the second inner ring temperature threshold 35 DEG CInner pipe 2. I.e. when t isInner ringT is less than or equal to 25 DEG CInner pipe 2The temperature is 52 ℃; when 25 ℃ is less than tInner ring≤35℃，tInner pipe 245 ℃ and tInner ringAt > 35 ℃ tInner pipe 2＝38℃。
Then, when the temperature t of the inner tube of the evaporator isInner pipeNot less than the current inner ring temperature threshold tInner pipe 2When the fan is started, the inner fan is started. And enter according to tInner pipeAnd performing coarse adjustment on the frequency of the compressor. I.e. when t isInner pipeWhen the temperature is less than 53 ℃, the frequency F of the compressor is increased every 1HZ/1S, and the frequency F of the compressor is ensured to be less than or equal to the upper limit Fmax of the operating frequency, namely F is less than or equal to Fmax. When t isInner pipeWhen the temperature is higher than 59 ℃, the frequency F of the compressor is reduced every 2HZ/1S, and the frequency F of the compressor is ensured to be more than or equal to the lower limit Fmin of the operating frequency, namely F is more than or equal to Fmin. When the temperature is not lower than 59 DEG CInner pipeWhen the temperature is more than or equal to 53 ℃, if 20S can be maintained, the current frequency is maintained and the operation enters into the operation according to tInner pipeFine adjusting the rotation speed of the inner fan.
I.e. when t isInner pipeWhen the temperature is lower than 55 ℃, the rotating speed R of the inner fan is reduced every 30R/5S, and the rotating speed R of the inner fan is ensured to be larger than or equal to the lower rotating speed limit Rmin, namely R is larger than or equal to Rmin. When t isInner pipeWhen the temperature is higher than 57 ℃, the rotating speed R of the inner fan is increased every 30R/5S, and the rotating speed R of the inner fan is ensured to be less than or equal to the upper rotating speed limit, namely R is less than or equal to Rmax. When the temperature is 57 ℃ or moreInner pipeWhen the temperature is more than or equal to 55 ℃, the current rotating speed frequency is directly maintained. Subsequently, if t is more than or equal to 57 DEG CInner pipeAnd if the temperature can be maintained for 1min at more than or equal to 55 ℃, or the sterilization stage is maintained for 10min, the self-cleaning mode is exited.
The temperature thresholds of the arrangement in the present embodiment, i.e., the temperatures of 25 ℃, 35 ℃, 45 ℃, 52 ℃, 55 ℃, 57 ℃, and 59 ℃ are fixed after the arrangement. Can vary downwards depending on the actual situation, but can no longer be high. Since this temperature corresponds to the high pressure of the refrigerant corresponding to the saturation temperature. If the temperature is configured to be higher, the system pressure exceeds the standard and exceeds 4.45mpa, and the system design requirement is not met. Also, 56 ℃ is already capable of killing most common bacteria, so this embodiment preferably uses this set of temperatures.
It should be understood that although the various steps in the flow charts of fig. 1-3 are shown in order as indicated by the arrows, the steps are not necessarily performed in order as indicated by the arrows. The steps are not performed in the exact order shown and described, and may be performed in other orders, unless explicitly stated otherwise. Moreover, at least some of the steps in fig. 1-3 may include multiple steps or multiple stages, which are not necessarily performed at the same time, but may be performed at different times, which are not necessarily performed in sequence, but may be performed in turn or alternately with other steps or at least some of the other steps.
In one embodiment, as shown in fig. 4, there is provided an air conditioner self-cleaning device, including: a detection module 402, an opening control module 404, a regulation module 406, and a sterilization control module 408, wherein:
a detection module 402, configured to control the compressor to reduce the frequency when detecting the self-cleaning sterilization instruction;
the starting control module 404 is configured to start the four-way valve to execute a heating mode when the frequency of the compressor is reduced to a preset frequency, and synchronously start the external fan to operate at a highest wind level;
the adjusting module 406 is configured to adjust the frequency of the compressor to a target frequency after delaying for a first preset time;
and the sterilization control module 408 is used for entering a self-cleaning sterilization pipe temperature control stage after the frequency of the compressor is adjusted to the target frequency.
In one embodiment, the sterilization control module 408 is further configured to detect the temperature of the inner tube of the internal evaporator and the internal ambient temperature after the four-way valve is switched; determining a current inner tube temperature threshold according to the inner environment temperature; and when the temperature of the inner pipe is greater than or equal to the current inner pipe temperature threshold value, the inner fan is started, and the frequency of the compressor and the rotating speed of the inner fan are adjusted according to the current inner pipe temperature.
In one embodiment, the sterilization control module 408 is further configured to adjust the frequency of the compressor according to the current temperature of the inner tube after the inner fan is turned on for a second preset time; if the current inner pipe temperature is in a preset first target temperature interval, adjusting the rotating speed of the inner fan according to the current inner pipe temperature; and in the process of adjusting the rotating speed of the internal fan, finishing self-cleaning if the current sterilization finishing condition is met.
In one embodiment, the sterilization control module 408 is further configured to increase the frequency of the compressor based on a preset first adjustment speed if the current inner tube temperature is less than the lower limit temperature of the first target temperature interval; if the current inner tube temperature is higher than the upper limit temperature of the first target temperature interval, reducing the frequency of the compressor based on a preset second adjusting speed; and if the current inner tube temperature is in the first target temperature interval and the preset maintaining time is maintained, maintaining the current frequency of the compressor.
In one embodiment, the sterilization control module 408 is further configured to decrease the rotation speed of the inner blower based on a preset third adjustment speed if the current inner tube temperature is lower than the lower limit temperature of the preset second target temperature interval; if the current inner tube temperature is higher than the upper limit temperature of the second target temperature interval, the rotating speed of the inner fan is increased based on a preset fourth adjusting speed; and if the current inner pipe temperature is in the second target temperature interval, maintaining the current rotating speed of the inner fan.
In one embodiment, the sterilization control module 408 is further configured to, during the adjustment process of the rotation speed of the inner fan, terminate the self-cleaning sterilization if the current inner tube temperature reaches a preset second target temperature interval and is maintained in the second target temperature interval for a third preset time; or in the adjusting process of the rotating speed of the inner fan, if the duration time of the current self-cleaning sterilization stage meets the fourth preset time, the self-cleaning sterilization is finished.
In one embodiment, the sterilization control module 408 is further configured to use the preset first internal tube temperature threshold as the current internal tube temperature threshold when the internal ambient temperature is less than or equal to the preset first internal ambient temperature threshold; when the internal environment temperature is greater than the first internal environment temperature threshold and less than or equal to a preset second internal environment temperature threshold, taking the preset second internal tube temperature threshold as the current internal tube temperature threshold; and when the internal environment temperature is greater than the second internal environment temperature threshold, taking a preset third internal pipe temperature threshold as the current internal pipe temperature threshold.
In one embodiment, the turn-on control module 404 is further configured to turn on the four-way valve to perform a heating mode after a fifth preset time period, and synchronously turn on the external fan to the highest wind range when the compressor is down to the preset frequency.
In one embodiment, the detection module 402 is further configured to control the speed of the external fan to be reduced before the four-way valve is turned on.
For the specific definition of the air conditioner self-cleaning device, reference may be made to the above definition of the air conditioner self-cleaning method, which is not described herein again. The modules in the air conditioner self-cleaning device can be wholly or partially realized by software, hardware and a combination thereof. The modules can be embedded in a hardware form or independent of a processor in the air conditioner, and can also be stored in a memory in the air conditioner in a software form, so that the processor can call and execute operations corresponding to the modules.
In one embodiment, an air conditioner is provided, the internal structure of which may be as shown in fig. 5. The air conditioner comprises a processor, a memory, a communication interface, a display screen and an input device which are connected through a system bus. Wherein, the processor of the air conditioner is used for providing calculation and control capability. The memory of the air conditioner comprises a nonvolatile storage medium and an internal memory. The non-volatile storage medium stores an operating system and a computer program. The internal memory provides an environment for the operation of an operating system and computer programs in the non-volatile storage medium. The communication interface of the air conditioner is used for carrying out wired or wireless communication with an external terminal, and the wireless communication can be realized through WIFI, an operator network, NFC (near field communication) or other technologies. The computer program is executed by a processor to implement an air conditioner self-cleaning method. The display screen of the air conditioner can be a liquid crystal display screen or an electronic ink display screen, and the input device of the air conditioner can be a touch layer covered on the display screen, a key, a track ball or a touch pad arranged on the shell of the air conditioner, an external keyboard, a touch pad or a mouse and the like.
It will be understood by those skilled in the art that the configuration shown in fig. 5 is a block diagram of only a portion of the configuration associated with the present application, and does not constitute a limitation on the air conditioner to which the present application is applied, and a particular air conditioner may include more or less components than those shown in the drawings, or combine certain components, or have a different arrangement of components.
In one embodiment, an air conditioner is provided, comprising a memory and a processor, the memory having a computer program stored therein, the processor implementing the following steps when executing the computer program:
when a self-cleaning sterilization instruction is detected, controlling a compressor to reduce the frequency;
when the compressor reduces the frequency to a preset frequency, the four-way valve is opened to execute a heating mode, and the outer fan is synchronously opened to the highest wind gear for running;
after delaying the first preset time, adjusting the frequency of the compressor to a target frequency;
and entering a self-cleaning sterilization pipe temperature control stage after the frequency of the compressor is adjusted to the target frequency.
In one embodiment, the processor, when executing the computer program, further performs the steps of: after the four-way valve is switched, detecting the temperature of an inner pipe of an evaporator of the internal machine and the internal environment temperature; determining a current inner tube temperature threshold according to the inner environment temperature; and when the temperature of the inner pipe is greater than or equal to the current inner pipe temperature threshold value, the inner fan is started, and the frequency of the compressor and the rotating speed of the inner fan are adjusted according to the current inner pipe temperature.
In one embodiment, the processor, when executing the computer program, further performs the steps of: after the inner fan is started for a second preset time, adjusting the frequency of the compressor according to the current inner pipe temperature; if the current inner pipe temperature is in a preset first target temperature interval, adjusting the rotating speed of the inner fan according to the current inner pipe temperature; and in the process of adjusting the rotating speed of the internal fan, finishing self-cleaning if the current sterilization finishing condition is met.
In one embodiment, the processor, when executing the computer program, further performs the steps of: if the current inner tube temperature is lower than the lower limit temperature of the first target temperature interval, increasing the frequency of the compressor based on a preset first adjusting speed; if the current inner tube temperature is higher than the upper limit temperature of the first target temperature interval, reducing the frequency of the compressor based on a preset second adjusting speed; and if the current inner tube temperature is in the first target temperature interval and the preset maintaining time is maintained, maintaining the current frequency of the compressor.
In one embodiment, the processor, when executing the computer program, further performs the steps of: if the current inner pipe temperature is lower than the lower limit temperature of the preset second target temperature interval, reducing the rotating speed of the inner fan based on a preset third adjusting speed; if the current inner tube temperature is higher than the upper limit temperature of the second target temperature interval, the rotating speed of the inner fan is increased based on a preset fourth adjusting speed; and if the current inner pipe temperature is in the second target temperature interval, maintaining the current rotating speed of the inner fan.
In one embodiment, the processor, when executing the computer program, further performs the steps of: in the adjusting process of the rotating speed of the inner fan, if the current inner pipe temperature reaches a preset second target temperature interval and is maintained in the second target temperature interval for a third preset time, finishing self-cleaning sterilization; or in the adjusting process of the rotating speed of the inner fan, if the duration time of the current self-cleaning sterilization stage meets the fourth preset time, the self-cleaning sterilization is finished.
In one embodiment, the processor, when executing the computer program, further performs the steps of: when the internal environment temperature is less than or equal to a preset first internal environment temperature threshold value, taking the preset first internal pipe temperature threshold value as a current internal pipe temperature threshold value; when the internal environment temperature is greater than the first internal environment temperature threshold and less than or equal to a preset second internal environment temperature threshold, taking the preset second internal tube temperature threshold as the current internal tube temperature threshold; and when the internal environment temperature is greater than the second internal environment temperature threshold, taking a preset third internal pipe temperature threshold as the current internal pipe temperature threshold.
In one embodiment, the processor, when executing the computer program, further performs the steps of: and when the compressor reduces the frequency to the preset frequency, the four-way valve is started to execute a heating mode after the fifth preset time is stabilized, and the outer fan is synchronously started to run at the highest wind gear.
In one embodiment, the processor, when executing the computer program, further performs the steps of: before the four-way valve is opened, the outer fan is controlled to reduce the rotating speed.
In one embodiment, a computer-readable storage medium is provided, having a computer program stored thereon, which when executed by a processor, performs the steps of:
when a self-cleaning sterilization instruction is detected, controlling a compressor to reduce the frequency;
when the compressor reduces the frequency to a preset frequency, the four-way valve is opened to execute a heating mode, and the outer fan is synchronously opened to the highest wind gear for running;
after delaying the first preset time, adjusting the frequency of the compressor to a target frequency;
and entering a self-cleaning sterilization pipe temperature control stage after the frequency of the compressor is adjusted to the target frequency.
In one embodiment, the computer program when executed by the processor further performs the steps of: after the four-way valve is switched, detecting the temperature of an inner pipe of an evaporator of the internal machine and the internal environment temperature; determining a current inner tube temperature threshold according to the inner environment temperature; and when the temperature of the inner pipe is greater than or equal to the current inner pipe temperature threshold value, the inner fan is started, and the frequency of the compressor and the rotating speed of the inner fan are adjusted according to the current inner pipe temperature.
In one embodiment, the computer program when executed by the processor further performs the steps of: after the inner fan is started for a second preset time, adjusting the frequency of the compressor according to the current inner pipe temperature; if the current inner pipe temperature is in a preset first target temperature interval, adjusting the rotating speed of the inner fan according to the current inner pipe temperature; and in the process of adjusting the rotating speed of the internal fan, finishing self-cleaning if the current sterilization finishing condition is met.
In one embodiment, the computer program when executed by the processor further performs the steps of: if the current inner tube temperature is lower than the lower limit temperature of the first target temperature interval, increasing the frequency of the compressor based on a preset first adjusting speed; if the current inner tube temperature is higher than the upper limit temperature of the first target temperature interval, reducing the frequency of the compressor based on a preset second adjusting speed; and if the current inner tube temperature is in the first target temperature interval and the preset maintaining time is maintained, maintaining the current frequency of the compressor.
In one embodiment, the computer program when executed by the processor further performs the steps of: if the current inner pipe temperature is lower than the lower limit temperature of the preset second target temperature interval, reducing the rotating speed of the inner fan based on a preset third adjusting speed; if the current inner tube temperature is higher than the upper limit temperature of the second target temperature interval, the rotating speed of the inner fan is increased based on a preset fourth adjusting speed; and if the current inner pipe temperature is in the second target temperature interval, maintaining the current rotating speed of the inner fan.
In one embodiment, the computer program when executed by the processor further performs the steps of: in the adjusting process of the rotating speed of the inner fan, if the current inner pipe temperature reaches a preset second target temperature interval and is maintained in the second target temperature interval for a third preset time, finishing self-cleaning sterilization; or in the adjusting process of the rotating speed of the inner fan, if the duration time of the current self-cleaning sterilization stage meets the fourth preset time, the self-cleaning sterilization is finished.
In one embodiment, the computer program when executed by the processor further performs the steps of: when the internal environment temperature is less than or equal to a preset first internal environment temperature threshold value, taking the preset first internal pipe temperature threshold value as a current internal pipe temperature threshold value; when the internal environment temperature is greater than the first internal environment temperature threshold and less than or equal to a preset second internal environment temperature threshold, taking the preset second internal tube temperature threshold as the current internal tube temperature threshold; and when the internal environment temperature is greater than the second internal environment temperature threshold, taking a preset third internal pipe temperature threshold as the current internal pipe temperature threshold.
In one embodiment, the computer program when executed by the processor further performs the steps of: and when the compressor reduces the frequency to the preset frequency, the four-way valve is started to execute a heating mode after the fifth preset time is stabilized, and the outer fan is synchronously started to run at the highest wind gear.
In one embodiment, the computer program when executed by the processor further performs the steps of: before the four-way valve is opened, the outer fan is controlled to reduce the rotating speed.
It will be understood by those skilled in the art that all or part of the processes of the methods of the embodiments described above can be implemented by hardware instructions of a computer program, which can be stored in a non-volatile computer-readable storage medium, and when executed, can include the processes of the embodiments of the methods described above. Any reference to memory, storage, database or other medium used in the embodiments provided herein can include at least one of non-volatile and volatile memory. Non-volatile Memory may include Read-Only Memory (ROM), magnetic tape, floppy disk, flash Memory, optical storage, or the like. Volatile Memory can include Random Access Memory (RAM) or external cache Memory. By way of illustration and not limitation, RAM can take many forms, such as Static Random Access Memory (SRAM) or Dynamic Random Access Memory (DRAM), among others.
The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims (12)

1. A method of self-cleaning an air conditioner, the method comprising:
when a self-cleaning sterilization instruction is detected, controlling a compressor to reduce the frequency;
when the compressor reduces the frequency to a preset frequency, a four-way valve is started to execute a heating mode, and an external fan is synchronously started to run at the highest wind gear;
after delaying for a first preset time, adjusting the frequency of the compressor to a target frequency;
and entering a self-cleaning sterilization pipe temperature control stage after the frequency of the compressor is adjusted to the target frequency.
2. The method of claim 1, wherein the method for controlling the temperature control stage of the self-cleaning sterilizing tube comprises:
after the four-way valve is switched, detecting the temperature of an inner pipe of an evaporator of the internal machine and the internal environment temperature;
determining a current inner tube temperature threshold according to the inner environment temperature;
and when the inner pipe temperature is greater than or equal to the current inner pipe temperature threshold value, starting an inner fan and adjusting the frequency of the compressor and the rotating speed of the inner fan according to the current inner pipe temperature.
3. The method of claim 2, wherein the turning on the inner fan and adjusting the frequency of the compressor and the speed of the inner fan based on the current inner tube temperature comprises:
after the inner fan is started for a second preset time, adjusting the frequency of the compressor according to the current inner pipe temperature;
if the current inner pipe temperature is in a preset first target temperature interval, adjusting the rotating speed of the inner fan according to the current inner pipe temperature;
and in the adjusting process of the rotating speed of the inner fan, finishing the self-cleaning sterilization if the current sterilization finishing condition is met.
4. The method of claim 3, wherein said adjusting the frequency of the compressor based on the current inner tube temperature comprises:
if the current inner tube temperature is lower than the lower limit temperature of the first target temperature interval, increasing the frequency of the compressor based on a preset first adjusting speed;
if the current inner tube temperature is higher than the upper limit temperature of the first target temperature interval, reducing the frequency of the compressor based on a preset second adjusting speed;
and if the current inner tube temperature is within the first target temperature interval and the preset maintaining time is maintained, maintaining the current frequency of the compressor.
5. The method of claim 3, wherein the adjusting the speed of the inner fan based on the current inner tube temperature comprises:
if the current inner tube temperature is lower than the lower limit temperature of a preset second target temperature interval, reducing the rotating speed of the inner fan based on a preset third adjusting speed; the second target temperature interval is within the first target temperature interval;
if the current inner pipe temperature is higher than the upper limit temperature of the second target temperature interval, the rotating speed of the inner fan is increased based on a preset fourth adjusting speed;
and if the current inner pipe temperature is in the second target temperature interval, maintaining the current rotating speed of the inner fan.
6. The method of claim 3, wherein in the adjusting of the rotation speed of the inner fan, if it is determined that the sterilization end condition is currently satisfied, ending the self-cleaning sterilization, comprising:
in the adjusting process of the rotating speed of the inner fan, if the current inner pipe temperature reaches a preset second target temperature interval and is maintained in the second target temperature interval for a third preset time, finishing self-cleaning sterilization;
or
And in the adjusting process of the rotating speed of the inner fan, if the duration time of the current self-cleaning sterilization stage meets the fourth preset time, finishing the self-cleaning sterilization.
7. The method of claim 2, wherein said determining a current inner tube temperature threshold from said inner ambient temperature comprises:
when the internal environment temperature is less than or equal to a preset first internal environment temperature threshold value, taking the preset first internal pipe temperature threshold value as a current internal pipe temperature threshold value;
when the internal environment temperature is greater than the first internal environment temperature threshold and less than or equal to a preset second internal environment temperature threshold, taking the preset second internal tube temperature threshold as the current internal tube temperature threshold;
and when the internal environment temperature is greater than the second internal environment temperature threshold, taking a preset third internal pipe temperature threshold as the current internal pipe temperature threshold.
8. The method of claim 1, wherein when the compressor is down-converted to a predetermined frequency, the four-way valve is turned on to perform a heating mode after a fifth predetermined time of stabilization, and the external fan is synchronously turned on to a highest wind speed for operation.
9. The method of claim 1, wherein prior to turning on the four-way valve, further comprising: and controlling the outer fan to reduce the rotating speed.
10. An air conditioner self-cleaning device, characterized in that the device comprises:
the detection module is used for controlling the compressor to reduce the frequency when detecting the self-cleaning sterilization instruction;
the starting control module is used for starting the four-way valve to execute a heating mode and synchronously starting the external fan to run to the highest wind gear when the frequency of the compressor is reduced to the preset frequency;
the adjusting module is used for adjusting the frequency of the compressor to a target frequency after delaying for a first preset time;
and the sterilization control module is used for entering a self-cleaning sterilization pipe temperature control stage after the frequency of the compressor is adjusted to the target frequency.
11. An air conditioner comprising a memory and a processor, the memory storing a computer program, characterized in that the processor, when executing the computer program, implements the steps of the method of any one of claims 1 to 9.
12. A computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, carries out the steps of the method of any one of claims 1 to 9.
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