CN114076385B - Air conditioner and automatic cleaning method for air conditioner outdoor unit - Google Patents
Air conditioner and automatic cleaning method for air conditioner outdoor unit Download PDFInfo
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- CN114076385B CN114076385B CN202010798033.0A CN202010798033A CN114076385B CN 114076385 B CN114076385 B CN 114076385B CN 202010798033 A CN202010798033 A CN 202010798033A CN 114076385 B CN114076385 B CN 114076385B
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- 238000004140 cleaning Methods 0.000 title claims abstract description 118
- 238000000034 method Methods 0.000 title claims abstract description 33
- 239000003507 refrigerant Substances 0.000 claims abstract description 52
- 238000010438 heat treatment Methods 0.000 claims description 25
- 238000005057 refrigeration Methods 0.000 claims description 21
- 238000010257 thawing Methods 0.000 claims description 17
- 238000007791 dehumidification Methods 0.000 claims description 14
- 239000003638 chemical reducing agent Substances 0.000 claims description 3
- 238000007599 discharging Methods 0.000 claims description 3
- 230000001186 cumulative effect Effects 0.000 description 20
- 238000001816 cooling Methods 0.000 description 14
- 239000007791 liquid phase Substances 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 230000005494 condensation Effects 0.000 description 4
- 238000009833 condensation Methods 0.000 description 4
- 238000001704 evaporation Methods 0.000 description 4
- 230000008020 evaporation Effects 0.000 description 4
- 238000004378 air conditioning Methods 0.000 description 3
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 230000001143 conditioned effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/50—Control or safety arrangements characterised by user interfaces or communication
- F24F11/54—Control or safety arrangements characterised by user interfaces or communication using one central controller connected to several sub-controllers
-
- 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
-
- 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
- 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 invention discloses an air conditioner and an automatic cleaning method for an air conditioner outdoor unit, wherein the air conditioner comprises a refrigerant circulation loop, a compressor, an outdoor heat exchanger, an indoor heat exchanger, a four-way valve, an indoor environment temperature sensor, an indoor coil temperature sensor, an indoor unit, an outdoor unit and a controller, and the controller is configured to acquire the air conditioner cleaning time information after the air conditioner receives a starting signal and determine the accumulated unclean time of the air conditioner based on the air conditioner cleaning time information; and the outdoor unit is used for automatically cleaning through the controller based on the accumulated unclean time of the air conditioner and a preset time threshold value, and the air conditioner cleaning time information comprises the accumulated unclean time of the air conditioner stored at the last starting period of the indoor unit, the last shutdown time of the indoor unit and the current starting time of the indoor unit, so that the automatic cleaning of the outdoor unit of the air conditioner is realized, and the experience of a user is improved.
Description
Technical Field
The application relates to the technical field of air conditioners, in particular to an air conditioner and an automatic cleaning method for an air conditioner outdoor unit.
Background
The outdoor condenser of the home air conditioner becomes very dirty after long-term non-use due to long-term exposure of the outdoor unit to the atmosphere, and many users do not know the outdoor cleaning function or can clean the condenser through the outdoor cleaning. Therefore, when outdoor cleaning is not performed for a long time, the refrigerating efficiency and the heating efficiency of the whole machine can be seriously affected due to the filth blockage of the outdoor condenser.
The current air-conditioning products in industry all have indoor and outdoor cleaning functions, and the functions are provided with independent remote control keys or APP keys, and are accessed by a main control key of a user, so that even if the functions are publicized as automatic cleaning, the functions are actually accessed through manual keys, and the automatic cleaning cannot be really realized.
Therefore, how to realize the automatic cleaning of the outdoor unit of the air conditioner is a technical problem to be solved in the art.
Disclosure of Invention
The invention provides an air conditioner, which is used for solving the technical problems that the air conditioner cleaning in the prior art needs manual key press and can not realize the complete automatic cleaning of an outdoor unit of the air conditioner, and comprises the following steps:
a refrigerant circulation loop for circulating the refrigerant in a loop formed by the compressor, the condenser, the expansion valve, the evaporator, the four-way valve and the pressure reducer;
the compressor is used for compressing the low-temperature low-pressure refrigerant gas into high-temperature high-pressure refrigerant gas and discharging the high-temperature high-pressure refrigerant gas to the condenser;
an outdoor heat exchanger and an indoor heat exchanger, wherein one of the heat exchangers works as a condenser and the other heat exchanger works as an evaporator;
the four-way valve is used for controlling the flow direction of the refrigerant in the refrigerant loop so as to switch the outdoor heat exchanger and the indoor heat exchanger between a condenser and an evaporator;
an indoor environment temperature sensor for detecting an indoor environment temperature;
an indoor coil temperature sensor for detecting an indoor coil temperature;
the indoor unit is used for storing the air conditioner cleaning time information and sending the air conditioner cleaning information to the controller;
the controller is configured to acquire the air conditioner cleaning time information after the air conditioner receives a starting signal, and determine the accumulated unclean time of the air conditioner based on the air conditioner cleaning time information;
automatically cleaning the outdoor unit based on the accumulated unclean time of the air conditioner and a preset time threshold;
the outdoor unit is used for automatically cleaning through the controller;
the air conditioner cleaning time information comprises the accumulated unclean time of the air conditioner, the last shutdown time of the indoor unit and the current startup time of the indoor unit, which are stored at the end of the last startup period of the indoor unit.
In some embodiments, the controller is specifically configured to:
when the accumulated unclean time of the air conditioner is greater than or equal to the preset time threshold, automatically cleaning the outdoor unit, and resetting the accumulated unclean time of the air conditioner.
In some embodiments, the controller is specifically configured to:
when the accumulated unclean time of the air conditioner is cleared or the accumulated unclean time of the air conditioner is smaller than the preset time threshold, entering a set mode and determining the accumulated unclean time of the air conditioner at the next moment;
the air conditioner accumulated unclean time at the next moment is determined based on the air conditioner accumulated unclean time, the outer fan running time and the air supply mode running time.
In some embodiments, the controller is specifically configured to:
when the set mode is heating and the air conditioner finishes automatic cleaning, the compressor is stopped for a preset stop time and then is switched to a set mode for operation;
when the set mode is refrigeration or dehumidification and the air conditioner finishes automatic cleaning, the set mode is directly changed into the set mode operation;
and stopping the compressor and converting to a set mode operation when the set mode is air supply and the air conditioner finishes automatic cleaning.
In some embodiments, the controller is further configured to:
and when the set mode is not refrigeration, heating, dehumidification or air supply, automatically defrosting and resetting the accumulated unclean time of the air conditioner.
In some embodiments, the controller is further configured to:
when the controller receives a shutdown signal, the accumulated unclean time of the air conditioner at the next moment is stored in the indoor unit, and the running time of the external fan and the running time of the air supply mode are cleared.
Correspondingly, the invention also provides an automatic cleaning method of the air conditioner outdoor unit, which is applied to the air conditioner comprising a refrigerant circulation loop, a compressor, an outdoor heat exchanger, an indoor heat exchanger, a four-way valve, an indoor environment temperature sensor, an indoor coil temperature sensor, an indoor unit, a controller and an outdoor unit, and comprises the following steps:
determining air conditioner accumulated unclean time based on air conditioner cleaning time information, wherein the air conditioner cleaning time information comprises the air conditioner accumulated unclean time stored at the last starting period of the indoor unit, the last shutdown time of the indoor unit and the current starting time of the indoor unit;
and automatically cleaning the outdoor unit based on the accumulated unclean time of the air conditioner and a preset time threshold.
In some embodiments, the outdoor unit is automatically cleaned based on the accumulated unclean time of the air conditioner and a preset time threshold, which specifically includes:
when the accumulated unclean time of the air conditioner is greater than or equal to the preset time threshold, automatically cleaning the outdoor unit, clearing the accumulated unclean time of the air conditioner, entering a set mode, and determining the accumulated unclean time of the air conditioner at the next moment, wherein the accumulated unclean time of the air conditioner at the next moment is determined based on the accumulated unclean time of the air conditioner, the running time of the external fan and the running time of the air supply mode;
and when the accumulated unclean time of the air conditioner is smaller than the preset time threshold, directly entering a set mode and determining the accumulated unclean time of the air conditioner at the next moment.
In some embodiments, the setting mode is entered, specifically:
when the set mode is heating and the air conditioner finishes automatic cleaning, the compressor is stopped for a preset stop time and then is switched to a set mode for operation;
when the set mode is refrigeration or dehumidification and the air conditioner finishes automatic cleaning, the set mode is directly changed into the set mode operation;
and stopping the compressor and converting to a set mode operation when the set mode is air supply and the air conditioner finishes automatic cleaning.
In some embodiments, the method further comprises:
and when the set mode is not refrigeration, heating, dehumidification or air supply, automatically defrosting and resetting the accumulated unclean time of the air conditioner.
Compared with the prior art, the invention has the following beneficial effects:
the invention discloses an air conditioner and an automatic cleaning method for an air conditioner outdoor unit, wherein the air conditioner comprises a refrigerant circulation loop, a compressor, an outdoor heat exchanger, an indoor heat exchanger, a four-way valve, an indoor environment temperature sensor, an indoor coil temperature sensor, an indoor unit, an outdoor unit and a controller, and the controller is configured to acquire the air conditioner cleaning time information after the air conditioner receives a starting signal and determine the accumulated unclean time of the air conditioner based on the air conditioner cleaning time information; and the outdoor unit is used for automatically cleaning through the controller based on the accumulated unclean time of the air conditioner and a preset time threshold value, and the air conditioner cleaning time information comprises the accumulated unclean time of the air conditioner stored at the last starting period of the indoor unit, the last shutdown time of the indoor unit and the current starting time of the indoor unit, so that the automatic cleaning of the outdoor unit of the air conditioner is realized, and the experience of a user is improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the description of the embodiments will be briefly introduced below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a perspective view showing an external appearance of an air conditioner of an embodiment;
fig. 2 is a circuit diagram showing an outline of the structure of the air conditioner of the embodiment;
fig. 3 is a block diagram showing an outline of a structure of a control system of an air conditioner;
fig. 4 shows a schematic structural diagram of an air conditioner according to an embodiment of the present invention;
fig. 5 is a schematic flow chart of an automatic cleaning method for an outdoor unit of an air conditioner according to an embodiment of the present invention;
fig. 6 is a schematic diagram showing an automatic cleaning judgment timing logic of an outdoor unit of an air conditioner according to an embodiment of the present invention.
Detailed Description
The following description of the embodiments of the present application 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, of the embodiments of the present application. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.
In the description of the present application, it should be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate description of the present application and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present application.
The terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present application, unless otherwise indicated, the meaning of "a plurality" is two or more.
In the description of the present application, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art in a specific context.
The air conditioner in this application performs a refrigeration cycle of the air conditioner by using a compressor, a condenser, an expansion valve, and an evaporator. The refrigeration cycle includes a series of processes involving compression, condensation, expansion, and evaporation, and supplies a refrigerant to the air that has been conditioned and heat exchanged.
The compressor compresses a refrigerant gas in a high-temperature and high-pressure state and discharges the compressed refrigerant gas. The discharged refrigerant gas flows into the condenser. The condenser condenses the compressed refrigerant into a liquid phase, and heat is released to the surrounding environment through the condensation process.
The expansion valve expands the liquid-phase refrigerant in a high-temperature and high-pressure state condensed in the condenser into a low-pressure liquid-phase refrigerant. The evaporator evaporates the refrigerant expanded in the expansion valve and returns the refrigerant gas in a low-temperature and low-pressure state to the compressor. The evaporator may achieve a cooling effect by exchanging heat with a material to be cooled using latent heat of evaporation of a refrigerant. The air conditioner may adjust the temperature of the indoor space throughout the cycle.
An outdoor unit of an air conditioner refers to a portion of a refrigeration cycle including a compressor and an outdoor heat exchanger, an indoor unit of the air conditioner includes an indoor heat exchanger, and an expansion valve may be provided in the indoor unit or the outdoor unit.
The indoor heat exchanger and the outdoor heat exchanger function as a condenser or an evaporator. When the indoor heat exchanger is used as a condenser, the air conditioner is used as a heater of a heating mode, and when the indoor heat exchanger is used as an evaporator, the air conditioner is used as a cooler of a cooling mode.
The air conditioner 1 shown in fig. 1 includes: the indoor unit 3 is, for example, an indoor unit (shown in the figure), and the indoor unit is usually mounted on an indoor wall surface WL or the like. For another example, an indoor unit (not shown) is also an indoor unit mode.
The outdoor unit 2 is usually installed outdoors and is used for heat exchange in an indoor environment. In fig. 1, the outdoor unit 2 is located outdoors on the opposite side of the indoor unit 3 across the wall surface WL, and the outdoor unit 2 is indicated by a broken line.
Fig. 2 shows a circuit configuration of an air conditioner 1, and the air conditioner 1 includes a refrigerant circuit 10, and is capable of performing a vapor compression refrigeration cycle by circulating a refrigerant in the refrigerant circuit 10. The indoor unit 3 and the outdoor unit 2 are connected to each other by a connection pipe 4 to form a refrigerant circuit 10 through which a refrigerant circulates.
As shown in fig. 3, the air conditioner 1 includes a control unit 50 for controlling operations of the respective components in the air conditioner so that the respective components of the air conditioner 1 operate to realize respective predetermined functions of the air conditioner. A remote controller 5 is attached to the air conditioner 1, and the remote controller 5 has a function of communicating with the control unit 50 using, for example, infrared rays or other communication means. The remote controller 5 is used for various controls of the air conditioner by a user, and interaction between the user and the air conditioner is realized.
For further description of the solution of the present application, fig. 4 is a schematic structural diagram of an air conditioner of the present application.
The application protects an air conditioner, as shown in fig. 4, specifically:
and the refrigerant circulation loop enables the refrigerant to circulate in a loop formed by the compressor, the condenser, the expansion valve, the evaporator, the four-way valve and the pressure reducer.
In a preferred embodiment of the present application, the air conditioner performs a refrigeration cycle of the air conditioner by using a compressor, a condenser, an expansion valve, and an evaporator. The refrigeration cycle includes a series of processes involving compression, condensation, expansion, and evaporation, and supplies a refrigerant to the air that has been conditioned and heat exchanged.
And the compressor is used for compressing the low-temperature low-pressure refrigerant gas into the high-temperature high-pressure refrigerant gas and discharging the high-temperature high-pressure refrigerant gas to the condenser.
In a preferred embodiment of the present application, the compressor compresses refrigerant gas in a high temperature and high pressure state and discharges the compressed refrigerant gas. The discharged refrigerant gas flows into the condenser. The condenser condenses the compressed refrigerant into a liquid phase, and heat is released to the surrounding environment through the condensation process.
An outdoor heat exchanger and an indoor heat exchanger, one of which is operated as a condenser and the other is operated as an evaporator.
In a preferred embodiment of the present application, the outdoor unit of the air conditioner includes a portion of the refrigeration cycle including a compressor and an outdoor heat exchanger, the indoor unit of the air conditioner includes an indoor heat exchanger, and the expansion valve may be provided in the indoor unit or the outdoor unit.
The expansion valve expands the liquid-phase refrigerant in a high-temperature and high-pressure state condensed in the condenser into a low-pressure liquid-phase refrigerant. The evaporator evaporates the refrigerant expanded in the expansion valve and returns the refrigerant gas in a low-temperature and low-pressure state to the compressor. The evaporator may achieve a cooling effect by exchanging heat with a material to be cooled using latent heat of evaporation of a refrigerant. The air conditioner may adjust the temperature of the indoor space throughout the cycle.
The indoor heat exchanger and the outdoor heat exchanger function as a condenser or an evaporator. When the indoor heat exchanger is used as a condenser, the air conditioner is used as a heater of a heating mode, and when the indoor heat exchanger is used as an evaporator, the air conditioner is used as a cooler of a cooling mode.
And the four-way valve is used for controlling the flow direction of the refrigerant in the refrigerant loop so as to switch between the outdoor heat exchanger and the indoor heat exchanger as a condenser and an evaporator.
And the indoor environment temperature sensor is used for detecting the indoor environment temperature.
And the indoor coil temperature sensor is used for detecting the indoor coil temperature.
The indoor unit 101 is configured to store air-conditioning cleaning time information and send the air-conditioning cleaning information to the controller.
The controller 102 is configured to acquire the air conditioner cleaning time information after the air conditioner receives a startup signal, and determine the accumulated unclean time of the air conditioner based on the air conditioner cleaning time information;
and automatically cleaning the outdoor unit based on the accumulated unclean time of the air conditioner and a preset time threshold.
And an outdoor unit 103 for performing an automatic cleaning by the controller.
The air conditioner cleaning time information comprises the accumulated unclean time of the air conditioner, the last shutdown time of the indoor unit and the current startup time of the indoor unit, which are stored at the end of the last startup period of the indoor unit.
In the preferred embodiment of the application, the air conditioner cleaning time information is stored in the indoor unit, and after the air conditioner is started, the indoor unit sends the air conditioner cleaning information to the controller, preferably, the air conditioner cleaning time information can be stored in the EEPROM of the indoor unit, so that the air conditioner is in a shutdown or startup state, the air conditioner cleaning time information can be stored in the indoor unit, after the controller receives an air conditioner startup signal, the air conditioner cleaning time information sent by the indoor unit is received, the air conditioner cleaning time information comprises the accumulated unclean time of the air conditioner stored at the end of the last startup period of the indoor unit, the last shutdown time of the indoor unit and the current startup time of the indoor unit, the time of the air conditioner in the shutdown state can be obtained through the last shutdown time of the indoor unit and the current startup time of the indoor unit, the accumulated unclean time of the air conditioner stored at the end of the last startup period of the air conditioner can be obtained through summation, and then the accumulated unclean time of the air conditioner can be compared with a preset time threshold value, whether the outdoor unit needs to be automatically cleaned or not, the preset time can be controlled according to the preset time, the preset time can be adjusted according to the preset time, the preset time can be used for the actual environment, and the air conditioner can be adjusted according to the preset time, and the practical environment.
In a preferred embodiment of the present application, the process of automatically cleaning the outdoor unit is specifically: the whole machine is heated for a certain time or judges whether the temperature of the outer disc is lower than a certain limit value, the compressor is operated at a fixed frequency, the outdoor evaporator frosts, the whole machine is stopped for 3min for protection, the whole machine is cooled for a certain time or judges whether the temperature of the outer disc reaches a certain limit value, the indoor fan is operated with breeze, and the compressor is operated at a fixed frequency, so that the outdoor evaporator is dried.
In the preferred embodiment of the application, for obtaining the last shutdown time of the indoor unit and the current startup time of the indoor unit, the indoor unit can communicate with the cloud end through other intelligent modules such as an NB module or a wifi module to obtain the current startup time, wherein the wifi module is required to be completed by a network distribution, the NB module is not required, an operator base station signal can be directly used, a user can select the indoor unit according to actual conditions, the indoor unit can write the last shutdown time into an EEPROM of the indoor unit when receiving the shutdown signal in the last startup period in the same way, and the time precision can be in a unit of day, for example 200601 represents 2020, 6 months and 1 day, and can be written into the EEPROM of the indoor unit according to one-byte data per 2 bits.
In order to accurately perform automatic cleaning on the outdoor unit, in some embodiments of the present application, the controller is specifically configured to:
when the accumulated unclean time of the air conditioner is greater than or equal to the preset time threshold, automatically cleaning the outdoor unit, and resetting the accumulated unclean time of the air conditioner.
In a preferred embodiment of the present application, after receiving the air conditioner accumulated unclean time, the controller compares the air conditioner accumulated unclean time with a preset threshold time, and when the air conditioner accumulated unclean time is greater than or equal to the preset time threshold, the outdoor unit completes automatic cleaning under the control of the controller, and simultaneously the controller clears the air conditioner accumulated unclean time in the indoor unit.
It should be noted that, the solution of the above preferred embodiment is only one specific implementation solution provided in the present application, and other methods for automatically cleaning the outdoor unit based on the accumulated unclean time of the air conditioner all belong to the protection scope of the present application.
In order to accurately perform automatic cleaning on the outdoor unit, in some embodiments of the present application, the controller is specifically further configured to:
when the accumulated unclean time of the air conditioner is cleared or the accumulated unclean time of the air conditioner is smaller than the preset time threshold, entering a set mode and determining the accumulated unclean time of the air conditioner at the next moment;
the air conditioner accumulated unclean time at the next moment is determined based on the air conditioner accumulated unclean time, the outer fan running time and the air supply mode running time.
In the preferred embodiment of the application, after receiving the air conditioner accumulated unclean time, the controller compares the air conditioner accumulated unclean time with a preset threshold time, when the air conditioner accumulated unclean time is cleared or the air conditioner accumulated unclean time is smaller than the preset time threshold, the outdoor unit is not required to be cleaned automatically, the air conditioner enters a set mode, the set mode is an operation mode which is set in advance by the air conditioner and comprises modes of heating, refrigerating, dehumidifying, air supplying and the like, a specific set mode is selected, a user can control the air conditioner through the remote controller, after entering the set mode, the controller needs to determine the air conditioner accumulated unclean time at the next moment of the air conditioner, the air conditioner accumulated unclean time at the next moment is obtained by summing the air conditioner accumulated unclean time, the outer fan operation time and the air supplying mode operation time, the accumulated unclean time of the air conditioner is outdoor unclean time accumulated before entering a set mode, when the air conditioner enters the set mode after the accumulated unclean time is cleared, the accumulated unclean time of the air conditioner is recorded as zero, and as the external fan does not operate when the air conditioner enters an air supply mode to operate, the air supply mode operation and the external fan operation are respectively timed, and it is required to be noted that for the external fan operation time, if a direct current fan is used, the timing can be performed according to a feedback signal, if an alternating current fan is used, the starting time is approximately considered as the fan operation time, meanwhile, the general outdoor condenser is more dirty when the external fan is operated than when the external fan is stopped, and preferably, the processing of the external fan operation time when the accumulated air conditioner is in the outdoor unclean time is multiplied by a coefficient k on the basis of the operation time; here, it can also be considered that the outdoor wind speeds of different gears have different degrees of influence on the outdoor dirt blocking condition, so the k value can be processed by taking different values according to different outdoor wind speed intervals: k1, k2, k3, etc., which are specifically determined by experimental results, are all within the scope of the present application.
It should be noted that, the solution of the above preferred embodiment is only one specific implementation solution provided in the present application, and other methods for determining the cumulative unclean time of the air conditioner at the next time after entering the setting mode all belong to the protection scope of the present application.
In order to correctly switch the setting mode and protect the air conditioner, in some embodiments of the present application, the controller is specifically configured to:
when the set mode is heating and the air conditioner finishes automatic cleaning, the compressor is stopped for a preset stop time and then is switched to a set mode for operation;
when the set mode is refrigeration or dehumidification and the air conditioner finishes automatic cleaning, the set mode is directly changed into the set mode operation;
and stopping the compressor and converting to a set mode operation when the set mode is air supply and the air conditioner finishes automatic cleaning.
In a preferred embodiment of the present application, when the air conditioner completes automatic cleaning, the set mode entered is heating, and since the air conditioner is in a cooling state before the air conditioner is in a cooling state when the air conditioner completes automatic cleaning outdoors, in order to protect the air conditioner for prolonging the service life, the compressor needs to be stopped for a preset stop time, the preset stop time can be set according to practical situations, preferably, the preset stop time can be set to 3min, and then the air conditioner is changed into a heating mode operation, when the air conditioner completes automatic cleaning, the set mode entered is cooling or dehumidifying, and when the air conditioner is in a cooling state before the air conditioner completes automatic cleaning outdoors, the air conditioner can be directly changed into the set mode operation at this time, and when the set mode entered is air supply after the air conditioner completes automatic cleaning outdoors, the compressor needs to be stopped at a fixed frequency at this time, and then the air conditioner is changed into the set mode operation.
It should be noted that, the solution of the above preferred embodiment is only one specific implementation solution proposed in the present application, and other methods for automatically cleaning from outside the air conditioner to enter the set mode are all within the protection scope of the present application.
To accurately determine the cumulative unclean time of the air conditioner, in some embodiments of the application, the controller is further configured to:
and when the set mode is not refrigeration, heating, dehumidification or air supply, automatically defrosting and resetting the accumulated unclean time of the air conditioner.
In the preferred embodiment of the present application, the setting mode of the air conditioner is composed of refrigeration, heating, dehumidification, air supply and defrosting, and when the setting mode is not refrigeration, heating, dehumidification or air supply, the air conditioner automatically enters the defrosting mode, and the process of automatically defrosting the air conditioner is equivalent to the process of automatically cleaning the outdoor unit of the air conditioner, so that the accumulated unclean time of the air conditioner of the indoor unit needs to be cleared after the automatic defrosting is performed.
It should be noted that, the solution of the above preferred embodiment is only one specific implementation solution provided in the present application, and other methods for automatically defrosting and resetting the accumulated unclean time of the air conditioner all belong to the protection scope of the present application.
To accurately determine the cumulative unclean time of the air conditioner, in some embodiments of the application, the controller is further configured to:
when the controller receives a shutdown signal, the accumulated unclean time of the air conditioner at the next moment is stored in the indoor unit, and the running time of the external fan and the running time of the air supply mode are cleared.
In the preferred embodiment of the present application, when the controller receives the shutdown signal, since the running time of the external fan and the running time of the air supply mode are included in the cumulative unclean time of the air conditioner at the next moment, the running time of the external fan and the running time of the air supply mode are cleared at this moment, and then the cumulative unclean time of the air conditioner at the next moment only needs to be stored in the indoor unit for use when the indoor unit is started next time, preferably, the shutdown time at this moment can also be stored in the indoor unit, which belongs to the protection scope of the present application.
The invention discloses an air conditioner, which comprises a refrigerant circulation loop, a compressor, an outdoor heat exchanger, an indoor heat exchanger, a four-way valve, an indoor environment temperature sensor, an indoor coil temperature sensor, an indoor unit, an outdoor unit and a controller, wherein the controller is configured to acquire cleaning time information of the air conditioner after the air conditioner receives a starting signal, and determine accumulated unclean time of the air conditioner based on the cleaning time information of the air conditioner; and the outdoor unit is used for automatically cleaning through the controller based on the accumulated unclean time of the air conditioner and a preset time threshold value, and the air conditioner cleaning time information comprises the accumulated unclean time of the air conditioner stored at the last starting period of the indoor unit, the last shutdown time of the indoor unit and the current starting time of the indoor unit, so that the automatic cleaning of the outdoor unit of the air conditioner is realized, and the experience of a user is improved.
Based on the above air conditioner, the present application further provides an automatic cleaning method for an outdoor unit of an air conditioner, as shown in fig. 5, applied to an air conditioner including a refrigerant circulation loop, a compressor, an outdoor heat exchanger, an indoor heat exchanger, a four-way valve, an indoor environment temperature sensor, an indoor coil temperature sensor, an indoor unit, a controller and an outdoor unit, the method includes:
step S201, determining air conditioner accumulated unclean time based on air conditioner cleaning time information, wherein the air conditioner cleaning time information comprises the air conditioner accumulated unclean time stored at the end of a last startup period of an indoor unit, the last shutdown time of the indoor unit and the current startup time of the indoor unit;
in the preferred embodiment of the present application, the air conditioner cleaning time information includes an air conditioner cumulative unclean time stored at the end of a last startup period by the indoor unit, a last shutdown time of the indoor unit, and a current startup time of the indoor unit, and the air conditioner cumulative unclean time can be obtained by adding the three, as shown in fig. 6, where t_notclean (i-1) is an air conditioner outdoor unclean time stored at the end of the last startup period, t (i-1) is a last shutdown time, t (i) is a current startup time, and t_notclean (i) is a current air conditioner cumulative unclean time, so that: t_notclean (i) =t_notclean (i-1) +t (i) -t (i-1).
Step S201, automatically cleaning the outdoor unit based on the accumulated unclean time of the air conditioner and a preset time threshold.
In a preferred embodiment of the present application, after determining the air conditioner cumulative unclean time, it is determined whether the outdoor unit needs to be automatically cleaned by comparing the air conditioner cumulative unclean time with a preset time threshold.
In order to accurately perform automatic cleaning on the outdoor unit, in some embodiments of the present application, the automatic cleaning on the outdoor unit is performed based on the accumulated unclean time of the air conditioner and a preset time threshold, specifically:
when the accumulated unclean time of the air conditioner is greater than or equal to the preset time threshold, automatically cleaning the outdoor unit, clearing the accumulated unclean time of the air conditioner, entering a set mode, and determining the accumulated unclean time of the air conditioner at the next moment, wherein the accumulated unclean time of the air conditioner at the next moment is determined based on the accumulated unclean time of the air conditioner, the running time of the external fan and the running time of the air supply mode;
and when the accumulated unclean time of the air conditioner is smaller than the preset time threshold, directly entering a set mode and determining the accumulated unclean time of the air conditioner at the next moment.
In the preferred embodiment of the application, the accumulated unclean time of the air conditioner is compared with the preset threshold time, when the accumulated unclean time of the air conditioner is greater than or equal to the preset time threshold, the outdoor unit automatically cleans under the control of the controller, meanwhile, the controller clears the accumulated unclean time of the air conditioner in the indoor unit, after the outdoor unit automatically cleans under the control of the controller, the air conditioner enters a set mode, the set mode is an operation mode which is set in advance by the air conditioner, the modes comprise heating, refrigerating, dehumidifying, air supplying and the like, the selection of the specific set mode is controlled by a remote controller, after entering the set mode, the controller needs to determine the accumulated unclean time of the air conditioner at the next moment of the air conditioner, the accumulated unclean time of the air conditioner at the next moment is obtained by summing the accumulated unclean time of the air conditioner, the running time of the external fan and the running time of the air supply mode, wherein the accumulated unclean time of the air conditioner is the accumulated outdoor unclean time before entering the set mode, when the air conditioner enters the set mode after being cleared from the accumulated unclean time, the accumulated unclean time of the air conditioner is recorded as zero, and the running of the external fan can not be operated when the air conditioner enters the air supply mode, so that the running of the air supply mode and the running of the external fan are respectively timed, the air supply mode and the running of the external fan are required to be more dirty when the external fan is operated than when the external fan is stopped, and preferably, the processing of the running time of the external fan is required to be multiplied by a coefficient k on the basis of the running time when the accumulated air conditioner is used for the outdoor unclean time; here, it can also be considered that the outdoor wind speeds of different gears have different degrees of influence on the outdoor dirt blocking condition, so the k value can be processed by taking different values according to different outdoor wind speed intervals: k1, k2, k3, etc. may be specifically determined according to the experimental results, where when the cumulative unclean time of the air conditioner is less than the preset time threshold, the air conditioner does not need to automatically clean the outdoor unit at this time, directly enters the setting mode and determines the cumulative unclean time of the air conditioner at the next time, and the process of determining the cumulative unclean time of the air conditioner at the next time is the same as the process of determining the cumulative unclean time of the air conditioner at the next time when the cumulative unclean time of the air conditioner is greater than or equal to the preset time threshold, and as shown in fig. 6, t_notclean (i) is the cumulative unclean time of the air conditioner calculated last time before the current startup time, t_modefaan (i+1) is the cumulative time of the air supply mode of the whole machine after the current startup time, t_fanwork (i+1) is the actual running time of the external fan, and k is the coefficient selected in the embodiment, so t_notclean (i+1) is the cumulative unclean time of the next time of the air conditioner at the next time, so that t_notclean is not shown.
t_notClean(i+1)＝(t_fanWork(i+1)*k)+t_modeFan(i+1)+t_notClean(i)；
Note that, when the cumulative unclean time of the air conditioner is equal to or greater than the preset time threshold, t_notclean (i) =0.
It should be noted that, the solution of the above preferred embodiment is only one specific implementation solution provided in the present application, and other methods for automatically cleaning the outdoor unit based on the accumulated unclean time of the air conditioner and the preset time threshold value all belong to the protection scope of the present application.
In order to correctly switch modes and protect the circuit, in some embodiments of the present application, a set mode is entered, specifically:
when the set mode is heating and the air conditioner finishes automatic cleaning, the compressor is stopped for a preset stop time and then is switched to a set mode for operation;
when the set mode is refrigeration or dehumidification and the air conditioner finishes automatic cleaning, the set mode is directly changed into the set mode operation;
and stopping the compressor and converting to a set mode operation when the set mode is air supply and the air conditioner finishes automatic cleaning.
In a preferred embodiment of the present application, when the air conditioner completes automatic cleaning, the set mode entered is heating, and since the air conditioner is in a cooling state before the air conditioner is in a cooling state when the air conditioner completes automatic cleaning outdoors, in order to protect the air conditioner for prolonging the service life, the compressor needs to be stopped for a preset stop time, the preset stop time can be set according to practical situations, preferably, the preset stop time can be set to 3min, and then the air conditioner is changed into a heating mode operation, when the air conditioner completes automatic cleaning, the set mode entered is cooling or dehumidifying, and when the air conditioner is in a cooling state before the air conditioner completes automatic cleaning outdoors, the air conditioner can be directly changed into the set mode operation at this time, and when the set mode entered is air supply after the air conditioner completes automatic cleaning outdoors, the compressor needs to be stopped at a fixed frequency at this time, and then the air conditioner is changed into the set mode operation.
It should be noted that, the solution of the above preferred embodiment is only one specific implementation solution proposed in the present application, and other methods for automatically cleaning from outside the air conditioner to enter the set mode are all within the protection scope of the present application.
To accurately determine the cumulative unclean time of the air conditioner, in some embodiments of the application, the controller is further configured to:
and when the set mode is not refrigeration, heating, dehumidification or air supply, automatically defrosting and resetting the accumulated unclean time of the air conditioner.
In the preferred embodiment of the present application, the setting mode of the air conditioner is composed of cooling, heating, dehumidifying, air supplying and defrosting, when the setting mode is not cooling, heating, dehumidifying or air supplying, the air conditioner automatically enters the defrosting mode, and since the process of automatically defrosting the air conditioner is equivalent to the process of automatically cleaning the outdoor unit of the air conditioner, the accumulated unclean time of the air conditioner of the indoor unit needs to be cleared after the automatic defrosting is completed, as shown in fig. 6, after the defrosting is completed, the accumulated unclean time t_notclean (i+2), the running time t_fanwork (i+3) of the external fan and the running time t_modeFan (i+3) of the air supplying mode are cleared and re-timed.
It should be noted that, the solution of the above preferred embodiment is only one specific implementation solution provided in the present application, and other methods for automatically defrosting and resetting the accumulated unclean time of the air conditioner all belong to the protection scope of the present application.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present application, and are not limiting thereof; although the present application has been described in detail with reference to the foregoing embodiments, one of ordinary skill in the art will appreciate that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not drive the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.
Claims (10)
1. An air conditioner, comprising:
a refrigerant circulation loop for circulating the refrigerant in a loop formed by the compressor, the condenser, the expansion valve, the evaporator, the four-way valve and the pressure reducer;
the compressor is used for compressing the low-temperature low-pressure refrigerant gas into high-temperature high-pressure refrigerant gas and discharging the high-temperature high-pressure refrigerant gas to the condenser;
an outdoor heat exchanger and an indoor heat exchanger, wherein one of the heat exchangers works as a condenser and the other heat exchanger works as an evaporator;
the four-way valve is used for controlling the flow direction of the refrigerant in the refrigerant loop so as to switch the outdoor heat exchanger and the indoor heat exchanger between a condenser and an evaporator;
an indoor environment temperature sensor for detecting an indoor environment temperature;
an indoor coil temperature sensor for detecting an indoor coil temperature;
the indoor unit is used for storing the air conditioner cleaning time information and sending the air conditioner cleaning information to the controller;
the controller is configured to acquire the air conditioner cleaning time information after the air conditioner receives a starting signal, and determine the accumulated unclean time of the air conditioner based on the air conditioner cleaning time information;
automatically cleaning the outdoor unit based on the accumulated unclean time of the air conditioner and a preset time threshold;
the outdoor unit is used for automatically cleaning through the controller;
the air conditioner cleaning time information comprises the accumulated unclean time of the air conditioner, the last shutdown time of the indoor unit and the current startup time of the indoor unit, which are stored at the end of the last startup period of the indoor unit;
after the air conditioner enters a set mode, determining the air conditioner accumulated unclean time at the next moment of the air conditioner, wherein the air conditioner accumulated unclean time at the next moment is obtained by summing the air conditioner accumulated unclean time, the outer fan running time and the air supply mode running time, multiplying the outer fan running time by a coefficient k on the basis of the running time when the air conditioner is accumulated to the outdoor unclean time, and determining the corresponding coefficient k according to different outdoor wind speed intervals.
2. The air conditioner of claim 1, wherein the controller is specifically configured to:
when the accumulated unclean time of the air conditioner is greater than or equal to the preset time threshold, automatically cleaning the outdoor unit, and resetting the accumulated unclean time of the air conditioner.
3. The air conditioner of claim 2, wherein the controller is specifically configured to:
when the accumulated unclean time of the air conditioner is cleared or the accumulated unclean time of the air conditioner is smaller than the preset time threshold, entering a set mode and determining the accumulated unclean time of the air conditioner at the next moment;
the air conditioner accumulated unclean time at the next moment is determined based on the air conditioner accumulated unclean time, the outer fan running time and the air supply mode running time.
4. The air conditioner of claim 3, wherein the controller is specifically configured to:
when the set mode is heating and the air conditioner finishes automatic cleaning, the compressor is stopped for a preset stop time and then is switched to a set mode for operation;
when the set mode is refrigeration or dehumidification and the air conditioner finishes automatic cleaning, the set mode is directly changed into the set mode operation;
and stopping the compressor and converting to a set mode operation when the set mode is air supply and the air conditioner finishes automatic cleaning.
5. The air conditioner of claim 1, wherein the controller is further configured to:
and when the set mode is not refrigeration, heating, dehumidification or air supply, automatically defrosting and resetting the accumulated unclean time of the air conditioner.
6. The air conditioner of claim 1, wherein the controller is further configured to:
when the controller receives a shutdown signal, the accumulated unclean time of the air conditioner at the next moment is stored in the indoor unit, and the running time of the external fan and the running time of the air supply mode are cleared.
7. An automatic cleaning method for an air conditioner outdoor unit is characterized by being applied to an air conditioner comprising a refrigerant circulation loop, a compressor, an outdoor heat exchanger, an indoor heat exchanger, a four-way valve, an indoor environment temperature sensor, an indoor coil temperature sensor, an indoor unit, a controller and an outdoor unit, and comprises the following steps:
determining air conditioner accumulated unclean time based on air conditioner cleaning time information, wherein the air conditioner cleaning time information comprises the air conditioner accumulated unclean time stored at the last starting period of the indoor unit, the last shutdown time of the indoor unit and the current starting time of the indoor unit;
automatically cleaning the outdoor unit based on the accumulated unclean time of the air conditioner and a preset time threshold;
after the air conditioner enters a set mode, determining the air conditioner accumulated unclean time at the next moment of the air conditioner, wherein the air conditioner accumulated unclean time at the next moment is obtained by summing the air conditioner accumulated unclean time, the outer fan running time and the air supply mode running time, multiplying the outer fan running time by a coefficient k on the basis of the running time when the air conditioner is accumulated to the outdoor unclean time, and determining the corresponding coefficient k according to different outdoor wind speed intervals.
8. The method of claim 7, wherein automatically cleaning the outdoor unit based on the accumulated unclean time of the air conditioner and a preset time threshold, specifically:
when the accumulated unclean time of the air conditioner is greater than or equal to the preset time threshold, automatically cleaning the outdoor unit, clearing the accumulated unclean time of the air conditioner, entering a set mode, and determining the accumulated unclean time of the air conditioner at the next moment, wherein the accumulated unclean time of the air conditioner at the next moment is determined based on the accumulated unclean time of the air conditioner, the running time of the external fan and the running time of the air supply mode;
and when the accumulated unclean time of the air conditioner is smaller than the preset time threshold, directly entering a set mode and determining the accumulated unclean time of the air conditioner at the next moment.
9. The method according to claim 8, wherein the entering of the set mode is in particular:
when the set mode is heating and the air conditioner finishes automatic cleaning, the compressor is stopped for a preset stop time and then is switched to a set mode for operation;
when the set mode is refrigeration or dehumidification and the air conditioner finishes automatic cleaning, the set mode is directly changed into the set mode operation;
and stopping the compressor and converting to a set mode operation when the set mode is air supply and the air conditioner finishes automatic cleaning.
10. The method of claim 9, wherein the method further comprises:
and when the set mode is not refrigeration, heating, dehumidification or air supply, automatically defrosting and resetting the accumulated unclean time of the air conditioner.
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Address after: No.1, Hisense Road, Nancun Town, Pingdu City, Qingdao City, Shandong Province 266700 Applicant after: Hisense Air Conditioning Co.,Ltd. Address before: No.1, Hisense Road, Nancun Town, Pingdu City, Qingdao City, Shandong Province 266700 Applicant before: HISENSE (SHANDONG) AIR-CONDITIONING Co.,Ltd. |
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