CN110873412A - Air conditioner and self-cleaning control method thereof - Google Patents

Air conditioner and self-cleaning control method thereof Download PDF

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Publication number
CN110873412A
CN110873412A CN201811007070.4A CN201811007070A CN110873412A CN 110873412 A CN110873412 A CN 110873412A CN 201811007070 A CN201811007070 A CN 201811007070A CN 110873412 A CN110873412 A CN 110873412A
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CN
China
Prior art keywords
air conditioner
heat exchanger
self
cleaning
volume expansion
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Pending
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CN201811007070.4A
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Chinese (zh)
Inventor
许文明
罗荣邦
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Qingdao Haier Air Conditioner Gen Corp Ltd
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Qingdao Haier Air Conditioner Gen Corp Ltd
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Priority to CN201811007070.4A priority Critical patent/CN110873412A/en
Publication of CN110873412A publication Critical patent/CN110873412A/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
    • F24F11/62—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
    • F24F2221/00—Details or features not otherwise provided for
    • F24F2221/22—Cleaning ducts or apparatus

Abstract

The invention discloses an air conditioner and a self-cleaning control method thereof, and belongs to the technical field of air conditioners. The control method comprises the following steps: controlling the air conditioner to execute at least one cold and hot expansion process in response to the air conditioner meeting the trigger condition of the self-cleaning mode, wherein the cold and hot expansion process comprises a refrigeration contraction process and a heating expansion process aiming at a heat exchanger to be cleaned; and controlling the air conditioner to execute a defrosting process in response to the air conditioner meeting a defrosting triggering condition. The control method for self-cleaning of the air conditioner provided by the invention can realize effective separation of the heat exchanger and the oil stain by utilizing the characteristic that the volume expansion rates of the heat exchanger and the oil stain are different when the heat exchanger and the oil stain are heated or cooled through executing at least one cold and hot expansion process, thereby improving the effect of the air conditioner on removing pollutants with strong adhesive force such as the oil stain and the like and effectively ensuring the self-cleaning efficiency of the air conditioner on pollutants with different properties.

Description

Air conditioner and self-cleaning control method thereof
Technical Field
The invention relates to the technical field of air conditioners, in particular to an air conditioner and a self-cleaning control method thereof.
Background
When the air conditioner operates in a cooling or heating mode, air in an external environment enters the inside of the machine body along the air inlet, and is blown into the external environment again through the air outlet after heat exchange of the heat exchange plate, in the process, impurities such as dust, large particles and the like mixed in the air can enter the indoor machine along with air inlet flow, although a dustproof filter screen arranged at the air inlet of the air conditioner can filter most of the dust and the particles, a small amount of tiny dust can not be completely blocked and filtered, and the dust can be gradually deposited and attached to the surface of the heat exchange plate along with long-term use of the air conditioner.
Generally, a cleaning method of an air conditioner in the prior art mainly includes two modes of manual cleaning and self cleaning of the air conditioner, wherein the self cleaning mode of the air conditioner is mainly divided into a frost condensation stage and a defrosting stage, wherein, taking an indoor unit of a split air conditioner as an example, in the frost condensation stage, the air conditioner firstly operates in a refrigeration mode, and increases refrigerant output quantity to an indoor heat exchanger, so that moisture in indoor air can be gradually condensed into a frost or ice layer on the outer surface of the heat exchanger, and in the process, the condensed frost layer can be combined with dust, so that the dust is peeled off from the outer surface of the heat exchanger; then, in the defrosting stage, the air conditioner operates in a heating mode to melt the frost layer condensed on the outer surface of the heat exchanger, and dust can be collected into the water receiving tray along with the melted water flow, so that the aim of self-cleaning the indoor unit of the air conditioner can be fulfilled; similarly, when the outdoor unit of the split air conditioner is cleaned, the self-cleaning operation is performed according to a reverse flow to that of the indoor unit, that is, the air conditioner operates the heating mode (the temperature of the outdoor unit is reduced, and the frost is condensed) and then operates the cooling mode (the temperature of the outdoor unit is increased, and the frost is melted).
For the air conditioner applied to some special scenes (such as a kitchen), the pollutants accumulated on the heat exchanger in the long-term use process not only contain dust, but also contain substances with strong adhesive force, such as oil stains, and the like, so that the pollutants on the heat exchanger are difficult to be completely removed only through the self-cleaning process of the condensation-defrosting.
Disclosure of Invention
The invention provides an air conditioner and a self-cleaning control method thereof, and aims to solve the problem that pollutants such as oil stains and the like are not easy to remove in the conventional self-cleaning process. The following presents a simplified summary in order to provide a basic understanding of some aspects of the disclosed embodiments. This summary is not an extensive overview and is intended to neither identify key/critical elements nor delineate the scope of such embodiments. Its sole purpose is to present some concepts in a simplified form as a prelude to the more detailed description that is presented later.
According to a first aspect of the present invention, there is provided a control method of self-cleaning of an air conditioner, the control method comprising:
controlling the air conditioner to execute at least one cold and hot expansion process in response to the air conditioner meeting the trigger condition of the self-cleaning mode, wherein the cold and hot expansion process comprises a refrigeration contraction process and a heating expansion process aiming at a heat exchanger to be cleaned;
and controlling the air conditioner to execute a defrosting process in response to the air conditioner meeting a defrosting triggering condition.
In an alternative embodiment, controlling the air conditioner to perform the cooling contraction process includes:
and controlling the air conditioner to operate the refrigeration mode according to the set operation parameters so as to reduce the temperature of the heat exchanger to be cleaned to be below the set frost condensation temperature.
In an alternative embodiment, the controlling the air conditioner to perform the thermal expansion process includes:
and controlling the air conditioner to operate the heating mode according to the set operation parameters so as to increase the temperature of the heat exchanger to be cleaned to be higher than the set heating temperature.
In an optional embodiment, the control method further comprises:
determining volume expansion parameters of a heat exchanger of the air conditioner and pollutants attached to the heat exchanger;
and setting the operation parameters of the refrigeration contraction process based on the volume expansion parameters of the heat exchanger and the pollutants.
In an optional embodiment, the control method further comprises:
determining volume expansion parameters of a heat exchanger of the air conditioner and pollutants attached to the heat exchanger;
and setting the operation parameters of the heating expansion process based on the volume expansion parameters of the heat exchanger and the pollutants.
According to the second aspect of the present invention, there is also provided an air conditioner comprising a machine body and a controller, wherein the controller is configured to:
controlling the air conditioner to execute at least one cold and hot expansion process in response to the air conditioner meeting the trigger condition of the self-cleaning mode, wherein the cold and hot expansion process comprises a refrigeration contraction process and a heating expansion process aiming at a heat exchanger to be cleaned;
and controlling the air conditioner to execute a defrosting process in response to the air conditioner meeting a defrosting triggering condition.
In an alternative embodiment, the controller is specifically configured to:
and controlling the air conditioner to operate the refrigeration mode according to the set operation parameters so as to reduce the temperature of the heat exchanger to be cleaned to be below the set frost condensation temperature.
In an alternative embodiment, the controller is specifically configured to:
and controlling the air conditioner to operate the heating mode according to the set operation parameters so as to increase the temperature of the heat exchanger to be cleaned to be higher than the set heating temperature.
In an alternative embodiment, the controller is further configured to:
determining volume expansion parameters of a heat exchanger of the air conditioner and pollutants attached to the heat exchanger;
and setting the operation parameters of the refrigeration contraction process based on the volume expansion parameters of the heat exchanger and the pollutants.
In an alternative embodiment, the controller is further configured to:
determining volume expansion parameters of a heat exchanger of the air conditioner and pollutants attached to the heat exchanger;
and setting the operation parameters of the heating expansion process based on the volume expansion parameters of the heat exchanger and the pollutants.
The invention adopts the technical scheme and has the beneficial effects that:
the control method for self-cleaning of the air conditioner provided by the invention can realize effective separation of the heat exchanger and the oil stain by utilizing the characteristic that the volume expansion rates of the heat exchanger and the oil stain are different when the heat exchanger and the oil stain are heated or cooled through executing at least one cold and hot expansion process, thereby improving the effect of the air conditioner on removing pollutants with strong adhesive force such as the oil stain and the like and effectively ensuring the self-cleaning efficiency of the air conditioner on pollutants with different properties.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the invention, as claimed.
Drawings
Fig. 1 is a first flowchart illustrating a self-cleaning control method of an air conditioner according to an exemplary embodiment of the present invention;
FIG. 2 is a second flowchart illustrating a self-cleaning control method of an air conditioner according to another exemplary embodiment of the present invention;
fig. 3 is a third flowchart illustrating a control method of self-cleaning of an air conditioner according to another exemplary embodiment of the present invention;
fig. 4 is a fourth flowchart illustrating a control method of self-cleaning of an air conditioner according to another exemplary embodiment of the present invention;
fig. 5 is a flowchart illustrating a control method of self-cleaning of an air conditioner according to another exemplary embodiment of the present invention.
Detailed Description
The following description and the drawings sufficiently illustrate specific embodiments of the invention to enable those skilled in the art to practice them. Other embodiments may incorporate structural, logical, electrical, process, and other changes. The examples merely typify possible variations. Individual components and functions are optional unless explicitly required, and the sequence of operations may vary. Portions and features of some embodiments may be included in or substituted for those of others. The scope of embodiments of the invention encompasses the full ambit of the claims, as well as all available equivalents of the claims. Embodiments may be referred to herein, individually or collectively, by the term "invention" merely for convenience and without intending to voluntarily limit the scope of this application to any single invention or inventive concept if more than one is in fact disclosed. Herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method or apparatus that comprises the element. The embodiments are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. As for the methods, products and the like disclosed by the embodiments, the description is simple because the methods correspond to the method parts disclosed by the embodiments, and the related parts can be referred to the method parts for description.
The air conditioner comprises an indoor heat exchanger, an outdoor heat exchanger, a throttling device and a compressor, wherein the indoor heat exchanger, the outdoor heat exchanger, the throttling device and the compressor are connected through refrigerant pipelines to form a refrigerant circulation loop, and refrigerant flows along the set flow directions of different operation modes through the refrigerant circulation loop, so that the functions of heating, refrigerating, self-cleaning and the like are realized.
In an embodiment, the operation modes of the air conditioner comprise a refrigeration mode, a heating mode and a self-cleaning mode, wherein the refrigeration mode is generally applied to a high-temperature working condition in summer and used for reducing the indoor environment temperature; the heating mode is generally applied to the low-temperature working condition in winter and is used for increasing the indoor environment temperature; the self-cleaning mode is generally a user's self-selection function mode or self-starting function, and can automatically clean the heat exchanger under the condition that dust and dirt are accumulated on the heat exchanger.
When the air conditioner operates in a refrigeration mode, the set refrigerant flow direction is that high-temperature refrigerant discharged by the compressor firstly flows through the outdoor heat exchanger to exchange heat with the outdoor environment, then flows into the indoor heat exchanger to exchange heat with the indoor environment, and finally the refrigerant flows back to the compressor to be compressed again; in the process, the refrigerant flowing through the outdoor heat exchanger emits heat to the outdoor environment, the refrigerant flowing through the indoor heat exchanger absorbs heat from the indoor environment, and the indoor heat can be continuously discharged to the outdoor environment through the circulating flow of the refrigerant in the refrigerant circulating loop, so that the refrigeration purpose of reducing the temperature of the indoor environment can be achieved.
The set refrigerant flow direction during the heating mode refers to that the high-temperature refrigerant discharged by the compressor firstly flows through the indoor heat exchanger to exchange heat with the outdoor environment, then flows into the outdoor heat exchanger to exchange heat with the indoor environment, and finally flows back to the compressor to be compressed again; in the process, the refrigerant flowing through the indoor heat exchanger emits heat to the indoor environment, the refrigerant flowing through the outdoor heat exchanger absorbs heat from the outdoor environment, and the outdoor heat can be continuously released to the indoor environment through the circulating flow of the refrigerant in the refrigerant circulating loop, so that the heating purpose of improving the temperature of the indoor environment can be achieved.
Generally, since the indoor heat exchanger is a heat exchanger directly used for changing an indoor temperature environment, the degree of cleanliness of the indoor heat exchanger may directly affect the use experience of a user. Therefore, the main application of the self-cleaning mode of the air conditioner of the present invention is an indoor heat exchanger. Of course, the self-cleaning mode of the air conditioner of the present invention may also be used to clean the outdoor heat exchanger, so in a specific embodiment, when the air conditioner of the present invention performs a cleaning process, only one of the indoor heat exchanger and the outdoor heat exchanger may be cleaned, or both of the indoor heat exchanger and the outdoor heat exchanger may be cleaned. It should be understood that if the existing air conditioner uses the same or similar control method as the present invention to perform the self-cleaning operation of the indoor and outdoor heat exchangers, it should be also included in the protection scope of the present invention.
Taking the self-cleaning process of the indoor heat exchanger as an example, the self-cleaning mode of the air conditioner operation comprises one or more self-cleaning processes; optionally, the self-cleaning process includes, but is not limited to, a cold-hot expansion process and a frost formation process; the cold and hot expansion process can be subdivided into two sub-processes of a refrigeration contraction process and a heating expansion process, and the frost formation and defrosting process can be subdivided into two sub-processes of a frost formation process and a defrosting stage.
Optionally, the air conditioner of the present invention may combine multiple self-cleaning processes to perform a cleaning operation on the heat exchanger in the process of performing the self-cleaning mode once according to the actual cleaning requirement, for example, in the process of performing the self-cleaning mode once, a cold-hot expansion process and a frost condensation and defrosting process are sequentially and respectively performed; alternatively, one of the self-cleaning processes may be combined with one or more sub-processes of one or more other self-cleaning processes to perform a cleaning operation on the heat exchanger, such as combining a cold-hot expansion process with a frost-forming process or a defrosting process in a frost-forming and defrosting process during a single self-cleaning mode; alternatively, one or more sub-processes of one of the self-cleaning processes may be combined with one or more sub-processes of the other one or more self-cleaning processes to perform a cleaning operation on the heat exchanger, such as a cooling contraction process or a heating expansion process of a cooling-heating expansion process and a defrosting process of a defrosting process in a single self-cleaning mode. One or more flow combinations in the self-cleaning flows can be preset in the air conditioner, and then the air conditioner can select the adaptive flow combination according to the actual cleaning requirement so as to utilize the cleaning flow defined by the flow combination to clean the heat exchanger for dust removal.
Specifically, for the cold and hot expansion process, taking an indoor heat exchanger as an example, the working process mainly includes two stages which are sequentially performed: a cooling contraction stage defined by a cold-hot expansion process and a heating expansion stage defined by a heating expansion process. The invention utilizes the characteristic that the volume expansion rates of the heat exchanger and the oil stain attached to the heat exchanger are different when the heat exchanger is heated or cooled, and the heat-cold expansion process is executed for one time or multiple times, so that the volume change of the heat exchanger and the oil stain under different cold and hot states can generate a gap between the heat exchanger and the oil stain, the adhesive force of the oil stain on the heat exchanger is reduced, and the effective separation of the heat exchanger and the oil stain is realized.
The invention reduces the temperature of the indoor heat exchanger by adjusting the operation parameters of the compressor, the fan, the throttling device and other components under the condition of controlling the flow direction of the refrigerant limited by the air conditioner in the refrigeration mode in the refrigeration contraction stage, because the oil stain is attached to the indoor heat exchanger and can transfer heat between the two, the temperature of the oil stain per se is also reduced along with the indoor heat exchanger, and because the volume expansion rates of the heat exchanger and the oil stain attached to the heat exchanger are different when the temperature is reduced, the contraction volumes of the heat exchanger and the oil stain are different under the condition of the same temperature variation, so that the oil stain is peeled off from the attachment position of the heat exchanger; after the stage of switching to the heating expansion, the air conditioner is controlled to convey the refrigerant to the indoor heat exchanger in the refrigerant flow direction limited by the heating mode, the temperature of the indoor heat exchanger is raised through adjusting the operation parameters of components such as a compressor, a fan, a throttling device and the like, the temperature of the oil stain per se is also raised along with the indoor heat exchanger, and meanwhile, due to the fact that the volume expansion rates of the indoor heat exchanger and the throttling device are different, under the condition of the same temperature variation amount in the temperature raising process, the volumes of the heat expansion of the indoor heat exchanger and the oil stain are different, the oil stain begins to expand from the contraction attachment position of the heat exchanger in the previous refrigeration contraction stage to increase the volume, the attachment viscosity between the indoor heat exchanger and the oil stain is reduced again, and the oil.
Before the air conditioner leaves a factory, different pollutant samples (such as different types of pollutant samples divided by regions or using areas of the air conditioner) on a heat exchanger used by a user can be collected, the volume expansion rates of the different pollutant samples are measured and calculated in an experiment mode and the like, and parameters and the like corresponding to the optimal stripping effect of the pollutants and the indoor heat exchanger in the switching change process of different refrigerating temperatures and heating temperatures between the two are further measured and calculated according to one or more materials of the indoor heat exchanger; the parameters are prestored in components such as an electric control board, an MCU and the like of the air conditioner, so that when the air conditioner needs to clean the indoor heat exchanger in a self-cleaning mode defined by a cold and hot expansion process, the parameters can be called, and thus data such as running parameters and the like needed to be set when the self-cleaning mode is executed are determined.
For the flow of frost formation and defrosting, the indoor heat exchanger is taken as an example, and the working flow mainly comprises two stages which are sequentially carried out: the defrosting process comprises an indoor heat exchanger defrosting stage defined by a defrosting process and an indoor heat exchanger defrosting stage modern by a defrosting process. In the defrosting stage of the indoor heat exchanger, ice can be condensed and frosted on the indoor heat exchanger of the indoor unit; in the defrosting stage of the indoor heat exchanger, the condensed frost of the indoor heat exchanger in the previous defrosting stage is melted, impurities such as dust and the like can be separated from the indoor heat exchanger along with the melted condensed water, and the cleaning treatment of the indoor heat exchanger is completed.
Specifically, in the operation process of the air conditioner in the refrigeration mode, if the power of the compressor is improved and the output quantity of the refrigerant is increased, the low-temperature refrigerant quantity input into the indoor unit can be increased, the redundant refrigerant cold quantity can reduce the internal temperature of the indoor unit, and when the internal temperature of the indoor unit is lower than the frost condensation critical temperature value (such as 0 ℃), water vapor in air flowing through the indoor unit can be gradually condensed into frost in the indoor unit.
In the heating mode operation process of the air conditioner, the high-temperature refrigerant firstly flows through the indoor heat exchanger, so that the cold energy of the high-temperature refrigerant can increase the internal temperature of the indoor unit, and when the internal temperature of the indoor unit is higher than the frost condensation critical temperature value (such as 0 ℃), the frost condensed in the indoor unit can be gradually melted and dripped, so that the frost can be separated from the indoor heat exchanger. The control method of the invention is that under the condition that the flow direction of the refrigerant limited by the heating mode of the air conditioner is controlled at the defrosting stage of the indoor heat exchanger, the defrosting operation of the indoor heat exchanger is realized by adjusting the operation parameters of components such as a compressor, a fan, a throttling device and the like.
Similarly, when the outdoor heat exchanger is self-cleaned, when the air conditioner flows in the refrigerant flow direction defined by the heating mode, the refrigerant flowing out of the indoor heat exchanger is a medium-temperature refrigerant and the refrigerant flowing into the outdoor heat exchanger after being throttled by the throttling device is a low-temperature refrigerant, so that the low-temperature refrigerant can reduce the temperature of the outdoor heat exchanger, and when the temperature inside the outdoor unit is lower than the frost condensation critical temperature value (such as 0 ℃), water vapor in the air flowing through the outdoor unit can be gradually condensed into frost inside the outdoor unit. Therefore, the ice and the frost of the outdoor heat exchanger are realized while the ice and the frost of the indoor heat exchanger are melted.
And then, the indoor heat exchanger finishes melting ice and defrosting in the defrosting stage of the indoor heat exchanger, self-cleaning of the indoor heat exchanger is finished, the air conditioner enters the defrosting stage of the outdoor heat exchanger, at the moment, the air conditioner is controlled to flow in the direction of the refrigerant flow defined by the refrigeration mode again, the flow direction of the high-temperature refrigerant discharged by the compressor is changed, and the high-temperature refrigerant flows through the outdoor heat exchanger, so that the ice and defrosting of the outdoor heat exchanger can be realized by utilizing the heat of the high-temperature refrigerant, and the self-cleaning process of the outdoor heat exchanger.
In the self-cleaning process, each stage can be performed according to a preset time length, for example, the defrosting stage of the indoor heat exchanger can be preset to 10min, and the defrosting stage of the indoor heat exchanger can be preset to 12min, so that the air conditioner can start timing after the air conditioner enters the defrosting stage of the indoor heat exchanger in the self-cleaning mode, when the time reaches 10min, the air conditioner enters the defrosting stage of the indoor heat exchanger, the defrosting stage of the indoor heat exchanger lasts for 12min, it can be determined that the self-cleaning of the indoor unit is finished, and the air conditioner exits the self-cleaning mode.
In the process that the air conditioner is switched to the flow direction limited by the cooling mode or the heating mode, the opening/closing and the rotating speed of the fans of the indoor unit and the outdoor unit also need to be correspondingly controlled, for example, the indoor fan in the frost condensation stage of the indoor heat exchanger is generally closed or operated at a low speed, and the outdoor fan is opened for operation; and in the defrosting stage of the indoor heat exchanger, the indoor fan is started to operate, and outdoor air is closed or operated at a low speed. Therefore, the indoor unit and the outdoor unit are respectively timed in the self-cleaning process, and when the preset time is reached, the components such as a fan of the air conditioner and the like are controlled to carry out corresponding state switching.
For the air conditioner applied to some special scenes (such as a kitchen), the pollutants accumulated on the heat exchanger in the long-term use process not only contain dust, but also contain substances with strong adhesive force, such as oil stains, and the like, so that the pollutants on the heat exchanger are difficult to be completely removed only through the self-cleaning process of the condensation-defrosting.
Therefore, the invention provides one or more air conditioners and a self-cleaning control method thereof, aiming at solving the technical problem that pollutants such as oil stains with strong adhesive force are not easy to remove.
Fig. 1 is a first flowchart illustrating a control method for self-cleaning of an air conditioner according to an exemplary embodiment of the present invention.
As shown in fig. 1, the present invention provides a control method for self-cleaning of an air conditioner, which mainly comprises the following steps:
s101, responding to the condition that the air conditioner meets the trigger condition of a self-cleaning mode, controlling the air conditioner to execute at least one cold and hot expansion process, wherein the cold and hot expansion process comprises a refrigeration contraction process and a heating expansion process aiming at a heat exchanger to be cleaned;
optionally, the triggering condition of the self-cleaning mode is that the accumulated running time of the air conditioner reaches a set accumulated time threshold; or, the self-cleaning triggering condition is that a control instruction for starting self-cleaning input by a user is received; the present invention is not limited thereto.
If the heat exchanger to be cleaned is an indoor heat exchanger, the cold and hot expansion process comprises a refrigeration contraction process and a heating expansion process aiming at the indoor heat exchanger at least once.
Optionally, the number of times that the cold-hot expansion process is executed in a single self-cleaning process may be determined according to an accumulated interval duration between a current self-cleaning process of the air conditioner and a previous self-cleaning process defined by the cold-hot expansion process.
For example, the air conditioner is preset with a correlation between an accumulated interval duration and the number of times of executing the cold and hot expansion process in a single self-cleaning process, and in the correlation, the accumulated interval duration is positively correlated with the number of times of executing the cold and hot expansion process in the single self-cleaning process.
That is, the longer the accumulated interval duration is, the more oil stains accumulated in the air conditioner day by day may be, so that when at least part of the current self-cleaning process is selected as a cold-thermal expansion process, the more times the cold-thermal expansion process is executed, and the heat exchanger and the oil stains are repeatedly subjected to cold-thermal expansion change by increasing the execution times, so as to improve the stripping effect between the heat exchanger and the oil stains; the shorter the accumulated interval duration is, the less the oil contamination on the air conditioner may be, so that when at least part of the current self-cleaning process is selected as a cold-thermal expansion process, the less the number of times of execution of the cold-thermal expansion process is, and the overall duration of the self-cleaning process is shortened without affecting the oil contamination removal effect.
Optionally, the number of times the cold-hot expansion process is performed in a single self-cleaning process is 3.
The flow for controlling the air conditioner to execute the refrigeration contraction comprises the following steps: controlling the air conditioner to operate a refrigeration mode according to set operation parameters so as to reduce the temperature of the heat exchanger to be cleaned to be below a set refrigeration contraction temperature; optionally, the refrigeration contraction temperature is a frost condensation temperature set at a frost condensation stage of a frost condensation and defrosting process of the air conditioner, that is, the temperature of the heat exchanger to be cleaned is reduced to be below the frost condensation temperature by controlling the air conditioner to operate a refrigeration mode according to set operation parameters.
Here, if the air conditioner does not preset a frost condensation and defrosting process, the frost condensation temperature may be prestored in the air conditioner as one temperature data and associated with the cooling contraction process; in this way, during the cooling contraction flow of the air conditioner, the temperature data can be used as the target temperature of the indoor heat exchanger, and the temperature of the indoor heat exchanger can be reduced to be lower than or equal to the target temperature by adjusting components such as a compressor, a throttling device and a fan of the air conditioner based on the target temperature.
The process of controlling the air conditioner to execute the heating expansion comprises the following steps: controlling the air conditioner to operate a heating mode according to set operation parameters so as to reduce the temperature of the heat exchanger to be cleaned to be above a set heating expansion temperature; optionally, the heating expansion temperature is a defrosting temperature set in a defrosting stage of a defrosting process of the air conditioner, that is, the temperature of the heat exchanger to be cleaned is reduced to be higher than the defrosting temperature by controlling the air conditioner to operate a heating mode according to set operation parameters.
Here, if the air conditioner does not preset a frost condensation and defrosting process, the defrosting temperature may be prestored in the air conditioner as one temperature data and associated with the heating expansion process; in this way, in the heating and expansion flow performed by the air conditioner, the temperature data can be used as the target temperature of the indoor heat exchanger, and the temperature of the indoor heat exchanger in the heating and expansion flow can be reduced to the target temperature or higher by adjusting components such as a compressor, a throttle device, and a fan of the air conditioner based on the target temperature.
Optionally, the heating expansion temperature set in the heating expansion process is 50 ℃.
And S102, responding to the condition that the air conditioner meets a defrosting triggering condition, and controlling the air conditioner to execute a defrosting process.
Alternatively, when it is determined in step S101 that the trigger condition of the self-cleaning mode of the air conditioner is satisfied, after performing at least one cold-hot expansion process, the air conditioner may be directly switched back to the operation mode before performing the self-cleaning mode, such as the normal cooling mode, without performing the defrosting process defined in step S102. Here, during the process of performing at least one cold and hot expansion, the air conditioner can generate condensed water or frost on the surface of the indoor heat exchanger during the refrigeration contraction phase, so that after oil stains are stripped from the heat exchanger, the condensed water formed by naturally melting the condensed water or frost layer can be utilized, and when the oil stains flow under the action of gravity, the oil stains and other pollutants are flushed away, so that the oil stains and the heat exchanger are finally separated, and the oil stains are collected into a water pan and other components of the air conditioner along with the condensed water and are finally discharged into the outdoor environment.
In this embodiment, the defrosting process executed by the air conditioner in step S102 is to control the air conditioner to defrost the air conditioner through the defrosting process disclosed in the foregoing, that is, to control the air conditioner to convey the refrigerant to the indoor heat exchanger in the refrigerant flow direction defined by the heating mode, and the heat of the high-temperature refrigerant can be used to further remove the condensed water and the frost and the like generated in the refrigeration contraction stage of the cold and hot expansion process, so as to speed up the whole process of self-cleaning and reduce the residues of the condensed water and the frost.
Optionally, the control method of the present invention further includes: determining volume expansion parameters of a heat exchanger of the air conditioner and pollutants attached to the heat exchanger; and setting the operation parameters of the refrigeration contraction process based on the volume expansion parameters of the heat exchanger and the pollutants.
Specifically, information such as volume expansion parameters and operation parameters can be prestored in components such as an electric control board and an MCU of the air conditioner, so that when the air conditioner needs to clean the indoor heat exchanger in a self-cleaning mode defined by a cold and hot expansion process, the parameters can be called, and data such as the operation parameters needed to be set when the self-cleaning mode is executed can be determined; if the air conditioner is preset with the correlation between the operation parameters of refrigeration and contraction and the volume expansion parameters, after the volume expansion parameters are determined, the correlation can be further followed to determine the corresponding operation parameters.
Here, since the areas where different users are located and the use environments of their air conditioners are different, the components of contaminants such as oil stains attached to the heat exchangers are also different; therefore, in order to improve the cleaning effect of the self-cleaning process, the incidence relation between the volume expansion parameters of various different pollutants and the difference factors such as the area where the user is located and the use environment of the air conditioner can be established in the modes of big data acquisition, summarization and classification, and the like, for example, the volume expansion parameters of the air conditioner pollutants of the user in the south China can be set as A through user data analysis; the volume expansion parameter of the air conditioning pollutants of the users in east China is set as B through the same user data analysis mode, and the like. Therefore, after the air conditioner is installed in the home of the user, the air conditioner can acquire the area where the air conditioner is located through modes of networking query, manual input of the user and the like, and further determine the volume expansion parameter of the applicable pollutant according to the incidence relation.
For example, the volume expansion parameter of the contaminant corresponding to the air conditioner installed in the bedroom may be set to C, and the volume expansion parameter of the contaminant corresponding to the air conditioner installed in the kitchen may be set to D, by analyzing the user data. Thus, after determining the use environment (bedroom, kitchen, etc.) where the air conditioner is located, the volume expansion parameter of the pollutant corresponding to the air conditioner in the use environment can be further determined.
Or, the parameter information, the association relationship, and the like of the embodiments are pre-stored in a network server that is configured by an air conditioner manufacturer as a user, and the air conditioner of the user can communicate with the network server through a data channel such as a wifi network of a home, so that the air conditioner can also send a query instruction and the like to the network server, where the instruction carries an identifier such as an area where the air conditioner is located or a use environment, and the network server responds to the query instruction, calls a corresponding volume expansion parameter according to the identifier carried by the query instruction, and feeds the volume expansion parameter and/or a corresponding operation parameter back to the air conditioner of the user, so that the air conditioner can determine the operation parameter of the refrigeration contraction process according to the volume expansion parameter; or directly controlling the refrigeration contraction process according to the feedback operation parameters.
Here, as for the volume expansion parameter of the heat exchanger, since the air conditioners of different models can also determine the material of the heat exchanger used in the production process, the volume expansion parameter of the heat exchanger can be pre-stored in the air conditioner as a preset parameter.
Optionally, the control method of the present invention further includes: determining volume expansion parameters of a heat exchanger of the air conditioner and pollutants attached to the heat exchanger; and setting the operation parameters of the heating expansion process based on the volume expansion parameters of the heat exchanger and the pollutants.
In this embodiment, the specific implementation manner of this step may refer to the content of setting the operation parameters of the refrigeration contraction process disclosed in the foregoing, which is not described herein again.
Fig. 2 is a second flowchart illustrating a self-cleaning control method of an air conditioner according to another exemplary embodiment of the present invention.
As shown in fig. 2, the present invention provides another control method for self-cleaning of an air conditioner, which mainly comprises the following steps:
s201, in response to the fact that the air conditioner meets a trigger condition of a self-cleaning mode, controlling the air conditioner to execute at least one cold and hot expansion process, wherein the cold and hot expansion process comprises a refrigeration contraction process and a heating expansion process aiming at a heat exchanger to be cleaned;
in this embodiment, the specific implementation manner of step S201 may refer to step S101 in the foregoing, which is not described herein again.
And S202, controlling the air conditioner to execute a ventilation defrosting process in response to the fact that the air conditioner meets the exit condition of the cold and hot expansion process.
Alternatively, when it is determined in step S201 that the trigger condition of the self-cleaning mode of the air conditioner is satisfied, after performing at least one cold-hot expansion process, the air conditioner may be directly switched back to the operation mode before performing the self-cleaning mode, such as the conventional cooling mode, without performing the ventilation defrosting process defined in step S202. Here, during the process of performing at least one cold and hot expansion, the air conditioner can generate condensed water or frost on the surface of the indoor heat exchanger during the refrigeration contraction phase, so that after oil stains are stripped from the heat exchanger, the condensed water formed by naturally melting the condensed water or frost layer can be utilized, and when the oil stains flow under the action of gravity, the oil stains and other pollutants are flushed away, so that the oil stains and the heat exchanger are finally separated, and the oil stains are collected into a water pan and other components of the air conditioner along with the condensed water and are finally discharged into the outdoor environment.
In this embodiment, the flow of ventilating and defrosting executed by the air conditioner in step S202 is to control the compressor of the air conditioner to stop, that is, stop to continue to convey the refrigerant to the compressor; meanwhile, the corresponding inner fan of the indoor unit is controlled to operate at a set wind speed, so that condensed water, frost and the like generated in the refrigeration contraction stage of the cold and hot expansion process are further removed by utilizing the temperature of the indoor environment, the integral process of self-cleaning is accelerated, and the residues of the condensed water and the frost are reduced.
Optionally, in the ventilation and defrosting process, the inner fan operates at a wind speed corresponding to a set high wind speed.
Optionally, the control method of the present invention further includes: determining volume expansion parameters of a heat exchanger of the air conditioner and pollutants attached to the heat exchanger; and setting the operation parameters of the refrigeration contraction process based on the volume expansion parameters of the heat exchanger and the pollutants.
Specifically, information such as volume expansion parameters and operation parameters can be prestored in components such as an electric control board and an MCU of the air conditioner, so that when the air conditioner needs to clean the indoor heat exchanger in a self-cleaning mode defined by a cold and hot expansion process, the parameters can be called, and data such as the operation parameters needed to be set when the self-cleaning mode is executed can be determined; if the air conditioner is preset with the correlation between the operation parameters of refrigeration and contraction and the volume expansion parameters, after the volume expansion parameters are determined, the correlation can be further followed to determine the corresponding operation parameters.
Here, since the areas where different users are located and the use environments of their air conditioners are different, the components of contaminants such as oil stains attached to the heat exchangers are also different; therefore, in order to improve the cleaning effect of the self-cleaning process, the incidence relation between the volume expansion parameters of various different pollutants and the difference factors such as the area where the user is located and the use environment of the air conditioner can be established in the modes of big data acquisition, summarization and classification, and the like, for example, the volume expansion parameters of the air conditioner pollutants of the user in the south China can be set as A through user data analysis; the volume expansion parameter of the air conditioning pollutants of the users in east China is set as B through the same user data analysis mode, and the like. Therefore, after the air conditioner is installed in the home of the user, the air conditioner can acquire the area where the air conditioner is located through modes of networking query, manual input of the user and the like, and further determine the volume expansion parameter of the applicable pollutant according to the incidence relation.
For example, the volume expansion parameter of the contaminant corresponding to the air conditioner installed in the bedroom may be set to C, and the volume expansion parameter of the contaminant corresponding to the air conditioner installed in the kitchen may be set to D, by analyzing the user data. Thus, after determining the use environment (bedroom, kitchen, etc.) where the air conditioner is located, the volume expansion parameter of the pollutant corresponding to the air conditioner in the use environment can be further determined.
Or, the parameter information, the association relationship, and the like of the embodiments are pre-stored in a network server that is configured by an air conditioner manufacturer as a user, and the air conditioner of the user can communicate with the network server through a data channel such as a wifi network of a home, so that the air conditioner can also send a query instruction and the like to the network server, where the instruction carries an identifier such as an area where the air conditioner is located or a use environment, and the network server responds to the query instruction, calls a volume expansion parameter of a response according to the identifier carried by the query instruction, and feeds the volume expansion parameter and/or a corresponding operation parameter back to the air conditioner of the user, so that the air conditioner can determine the operation parameter of a refrigeration contraction process according to the volume expansion parameter; or directly controlling the refrigeration contraction process according to the feedback operation parameters.
Here, as for the volume expansion parameter of the heat exchanger, since the air conditioners of different models can also determine the material of the heat exchanger used in the production process, the volume expansion parameter of the heat exchanger can be pre-stored in the air conditioner as a preset parameter.
Optionally, the control method of the present invention further includes: determining volume expansion parameters of a heat exchanger of the air conditioner and pollutants attached to the heat exchanger; and setting the operation parameters of the heating expansion process based on the volume expansion parameters of the heat exchanger and the pollutants.
In this embodiment, the specific implementation manner of this step may refer to the content of setting the operation parameters of the refrigeration contraction process disclosed in the foregoing, which is not described herein again.
Fig. 3 is a third flowchart illustrating a control method for self-cleaning of an air conditioner according to another exemplary embodiment of the present invention.
As shown in fig. 3, the present invention provides another control method for self-cleaning of an air conditioner, which mainly comprises the following steps:
s301, responding to the condition that the air conditioner meets the trigger condition of the self-cleaning mode, controlling the air conditioner to execute at least one cold and hot expansion process, wherein the cold and hot expansion process comprises a refrigeration contraction process and a heating expansion process aiming at a heat exchanger to be cleaned;
in this embodiment, the specific implementation manner of step S301 may refer to step S101 in the foregoing, which is not described herein again.
And S302, responding to the condition that the air conditioner meets the exit of the cold and hot expansion process, and controlling the air conditioner to sequentially execute a frost condensation-defrosting process defined by a self-cleaning mode.
Alternatively, when it is determined in step S301 that the trigger condition of the self-cleaning mode of the air conditioner is satisfied, after performing at least one cold-hot expansion process, the air conditioner may be directly switched back to the operation mode before performing the self-cleaning mode, such as the conventional cooling mode, without performing the frost condensation-defrosting process defined in step S302. After the oil stain is stripped from the heat exchanger, the condensed water formed by naturally melting a condensed water or frost layer can be utilized to flush away pollutants such as the oil stain and the like under the action of gravity so as to finally realize the separation of the oil stain and the heat exchanger, and the oil stain is collected into components such as a water pan of an air conditioner along with the condensed water and finally discharged into the outdoor environment.
In the present embodiment, the specific implementation manner of the frost condensation-defrosting process performed by the air conditioner in step S302 may refer to the content disclosed in the foregoing; here, the air conditioner performs a frost-defrosting process again after performing the cold-hot expansion process at least once, so as to clean contaminants such as dust and oil dirt again by using frost condensation, thereby improving a cleaning effect of the heat exchanger.
Optionally, the control method of the present invention further includes: determining volume expansion parameters of a heat exchanger of the air conditioner and pollutants attached to the heat exchanger; and setting the operation parameters of the refrigeration contraction process based on the volume expansion parameters of the heat exchanger and the pollutants.
Specifically, information such as volume expansion parameters and operation parameters can be prestored in components such as an electric control board and an MCU of the air conditioner, so that when the air conditioner needs to clean the indoor heat exchanger in a self-cleaning mode defined by a cold and hot expansion process, the parameters can be called, and data such as the operation parameters needed to be set when the self-cleaning mode is executed can be determined; if the air conditioner is preset with the correlation between the operation parameters of refrigeration and contraction and the volume expansion parameters, after the volume expansion parameters are determined, the correlation can be further followed to determine the corresponding operation parameters.
Here, since the areas where different users are located and the use environments of their air conditioners are different, the components of contaminants such as oil stains attached to the heat exchangers are also different; therefore, in order to improve the cleaning effect of the self-cleaning process, the incidence relation between the volume expansion parameters of various different pollutants and the difference factors such as the area where the user is located and the use environment of the air conditioner can be established in the modes of big data acquisition, summarization and classification, and the like, for example, the volume expansion parameters of the air conditioner pollutants of the user in the south China can be set as A through user data analysis; the volume expansion parameter of the air conditioning pollutants of the users in east China is set as B through the same user data analysis mode, and the like. Therefore, after the air conditioner is installed in the home of the user, the air conditioner can acquire the area where the air conditioner is located through modes of networking query, manual input of the user and the like, and further determine the volume expansion parameter of the applicable pollutant according to the incidence relation.
For example, the volume expansion parameter of the contaminant corresponding to the air conditioner installed in the bedroom may be set to C, and the volume expansion parameter of the contaminant corresponding to the air conditioner installed in the kitchen may be set to D, by analyzing the user data. Thus, after determining the use environment (bedroom, kitchen, etc.) where the air conditioner is located, the volume expansion parameter of the pollutant corresponding to the air conditioner in the use environment can be further determined.
Or, the parameter information, the association relationship, and the like of the embodiments are pre-stored in a network server that is configured by an air conditioner manufacturer as a user, and the air conditioner of the user can communicate with the network server through a data channel such as a wifi network of a home, so that the air conditioner can also send a query instruction and the like to the network server, where the instruction carries an identifier such as an area where the air conditioner is located or a use environment, and the network server responds to the query instruction, calls a volume expansion parameter of a response according to the identifier carried by the query instruction, and feeds the volume expansion parameter and/or a corresponding operation parameter back to the air conditioner of the user, so that the air conditioner can determine the operation parameter of a refrigeration contraction process according to the volume expansion parameter; or directly controlling the refrigeration contraction process according to the feedback operation parameters.
Here, as for the volume expansion parameter of the heat exchanger, since the air conditioners of different models can also determine the material of the heat exchanger used in the production process, the volume expansion parameter of the heat exchanger can be pre-stored in the air conditioner as a preset parameter.
Optionally, the control method of the present invention further includes: determining volume expansion parameters of a heat exchanger of the air conditioner and pollutants attached to the heat exchanger; and setting the operation parameters of the heating expansion process based on the volume expansion parameters of the heat exchanger and the pollutants.
In this embodiment, the specific implementation manner of this step may refer to the content of setting the operation parameters of the refrigeration contraction process disclosed in the foregoing, which is not described herein again.
Fig. 4 is a fourth flowchart illustrating a control method of self-cleaning of an air conditioner according to another exemplary embodiment of the present invention.
As shown in fig. 4, the present invention provides another control method for self-cleaning of an air conditioner, which mainly comprises the following steps:
s401, responding to the condition that the air conditioner meets the trigger condition of the self-cleaning mode, and controlling the air conditioner to execute at least one cold and hot expansion process, wherein the cold and hot expansion process comprises a refrigeration contraction process and a heating expansion process aiming at a heat exchanger to be cleaned;
in this embodiment, the specific implementation manner of step S401 may refer to step S101 in the foregoing, which is not described herein again.
In this embodiment, the air conditioner is further provided with an electric heating device, and the electric heating device not only can increase the temperature of the air outlet flow under the working condition of heating in winter, but also can transfer the generated heat to the indoor heat exchanger. Therefore, in the heating expansion process in step S401, in addition to increasing the temperature of the indoor heat exchanger by using the high-temperature refrigerant, the heating expansion process further includes controlling the electric heating device to heat the heat exchanger, so as to increase the temperature increase rate of the indoor heat exchanger in the heating expansion process, shorten the time for thermal expansion, and improve the separation effect between the heat exchanger and the contaminants.
S402, responding to the condition that the air conditioner meets the exit condition of the cold and hot expansion process, and controlling the air conditioner to execute a ventilation defrosting process.
In this embodiment, the specific implementation manner of step S402 may refer to step S202 in the foregoing, which is not described herein again.
Optionally, the control method of the present invention further includes: determining volume expansion parameters of a heat exchanger of the air conditioner and pollutants attached to the heat exchanger; and setting the operation parameters of the refrigeration contraction process based on the volume expansion parameters of the heat exchanger and the pollutants.
Specifically, information such as volume expansion parameters and operation parameters can be prestored in components such as an electric control board and an MCU of the air conditioner, so that when the air conditioner needs to clean the indoor heat exchanger in a self-cleaning mode defined by a cold and hot expansion process, the parameters can be called, and data such as the operation parameters needed to be set when the self-cleaning mode is executed can be determined; if the air conditioner is preset with the correlation between the operation parameters of refrigeration and contraction and the volume expansion parameters, after the volume expansion parameters are determined, the correlation can be further followed to determine the corresponding operation parameters.
Here, since the areas where different users are located and the use environments of their air conditioners are different, the components of contaminants such as oil stains attached to the heat exchangers are also different; therefore, in order to improve the cleaning effect of the self-cleaning process, the incidence relation between the volume expansion parameters of various different pollutants and the difference factors such as the area where the user is located and the use environment of the air conditioner can be established in the modes of big data acquisition, summarization and classification, and the like, for example, the volume expansion parameters of the air conditioner pollutants of the user in the south China can be set as A through user data analysis; the volume expansion parameter of the air conditioning pollutants of the users in east China is set as B through the same user data analysis mode, and the like. Therefore, after the air conditioner is installed in the home of the user, the air conditioner can acquire the area where the air conditioner is located through modes of networking query, manual input of the user and the like, and further determine the volume expansion parameter of the applicable pollutant according to the incidence relation.
For example, the volume expansion parameter of the contaminant corresponding to the air conditioner installed in the bedroom may be set to C, and the volume expansion parameter of the contaminant corresponding to the air conditioner installed in the kitchen may be set to D, by analyzing the user data. Thus, after determining the use environment (bedroom, kitchen, etc.) where the air conditioner is located, the volume expansion parameter of the pollutant corresponding to the air conditioner in the use environment can be further determined.
Or, the parameter information, the association relationship, and the like of the embodiments are pre-stored in a network server that is configured by an air conditioner manufacturer as a user, and the air conditioner of the user can communicate with the network server through a data channel such as a wifi network of a home, so that the air conditioner can also send a query instruction and the like to the network server, where the instruction carries an identifier such as an area where the air conditioner is located or a use environment, and the network server responds to the query instruction, calls a volume expansion parameter of a response according to the identifier carried by the query instruction, and feeds the volume expansion parameter and/or a corresponding operation parameter back to the air conditioner of the user, so that the air conditioner can determine the operation parameter of a refrigeration contraction process according to the volume expansion parameter; or directly controlling the refrigeration contraction process according to the feedback operation parameters.
Here, as for the volume expansion parameter of the heat exchanger, since the air conditioners of different models can also determine the material of the heat exchanger used in the production process, the volume expansion parameter of the heat exchanger can be pre-stored in the air conditioner as a preset parameter.
Optionally, the control method of the present invention further includes: determining volume expansion parameters of a heat exchanger of the air conditioner and pollutants attached to the heat exchanger; and setting the operation parameters of the heating expansion process based on the volume expansion parameters of the heat exchanger and the pollutants.
In this embodiment, the specific implementation manner of this step may refer to the content of setting the operation parameters of the refrigeration contraction process disclosed in the foregoing, which is not described herein again.
Fig. 5 is a flowchart illustrating a control method of self-cleaning of an air conditioner according to another exemplary embodiment of the present invention.
As shown in fig. 5, the present invention provides another control method for self-cleaning of an air conditioner, which mainly comprises the following steps:
s501, responding to the condition that the air conditioner meets the trigger condition of the self-cleaning mode, and controlling the air conditioner to execute at least one cold and hot expansion process, wherein the cold and hot expansion process comprises a refrigeration contraction process and a heating expansion process aiming at a heat exchanger to be cleaned; the heating expansion process comprises the steps of controlling an electric heating device to heat a heat exchanger;
in this embodiment, the specific implementation manner of step S501 may refer to step S401 in the foregoing, which is not described herein again.
And S502, responding to the condition that the air conditioner meets the exit of the cold and hot expansion process, and controlling the air conditioner to sequentially execute a frost condensation-defrosting process defined by a self-cleaning mode.
In this embodiment, the specific implementation manner of step S502 may refer to step S302 in the foregoing, which is not described herein again.
Optionally, the control method of the present invention further includes: determining volume expansion parameters of a heat exchanger of the air conditioner and pollutants attached to the heat exchanger; and setting the operation parameters of the refrigeration contraction process based on the volume expansion parameters of the heat exchanger and the pollutants.
Specifically, information such as volume expansion parameters and operation parameters can be prestored in components such as an electric control board and an MCU of the air conditioner, so that when the air conditioner needs to clean the indoor heat exchanger in a self-cleaning mode defined by a cold and hot expansion process, the parameters can be called, and data such as the operation parameters needed to be set when the self-cleaning mode is executed can be determined; if the air conditioner is preset with the correlation between the operation parameters of refrigeration and contraction and the volume expansion parameters, after the volume expansion parameters are determined, the correlation can be further followed to determine the corresponding operation parameters.
Here, since the areas where different users are located and the use environments of their air conditioners are different, the components of contaminants such as oil stains attached to the heat exchangers are also different; therefore, in order to improve the cleaning effect of the self-cleaning process, the incidence relation between the volume expansion parameters of various different pollutants and the difference factors such as the area where the user is located and the use environment of the air conditioner can be established in the modes of big data acquisition, summarization and classification, and the like, for example, the volume expansion parameters of the air conditioner pollutants of the user in the south China can be set as A through user data analysis; the volume expansion parameter of the air conditioning pollutants of the users in east China is set as B through the same user data analysis mode, and the like. Therefore, after the air conditioner is installed in the home of the user, the air conditioner can acquire the area where the air conditioner is located through modes of networking query, manual input of the user and the like, and further determine the volume expansion parameter of the applicable pollutant according to the incidence relation.
For example, the volume expansion parameter of the contaminant corresponding to the air conditioner installed in the bedroom may be set to C, and the volume expansion parameter of the contaminant corresponding to the air conditioner installed in the kitchen may be set to D, by analyzing the user data. Thus, after determining the use environment (bedroom, kitchen, etc.) where the air conditioner is located, the volume expansion parameter of the pollutant corresponding to the air conditioner in the use environment can be further determined.
Or, the parameter information, the association relationship, and the like of the embodiments are pre-stored in a network server that is configured by an air conditioner manufacturer as a user, and the air conditioner of the user can communicate with the network server through a data channel such as a wifi network of a home, so that the air conditioner can also send a query instruction and the like to the network server, where the instruction carries an identifier such as an area where the air conditioner is located or a use environment, and the network server responds to the query instruction, calls a volume expansion parameter of a response according to the identifier carried by the query instruction, and feeds the volume expansion parameter and/or a corresponding operation parameter back to the air conditioner of the user, so that the air conditioner can determine the operation parameter of a refrigeration contraction process according to the volume expansion parameter; or directly controlling the refrigeration contraction process according to the feedback operation parameters.
Here, as for the volume expansion parameter of the heat exchanger, since the air conditioners of different models can also determine the material of the heat exchanger used in the production process, the volume expansion parameter of the heat exchanger can be pre-stored in the air conditioner as a preset parameter.
Optionally, the control method of the present invention further includes: determining volume expansion parameters of a heat exchanger of the air conditioner and pollutants attached to the heat exchanger; and setting the operation parameters of the heating expansion process based on the volume expansion parameters of the heat exchanger and the pollutants.
In this embodiment, the specific implementation manner of this step may refer to the content of setting the operation parameters of the refrigeration contraction process disclosed in the foregoing, which is not described herein again.
In an alternative embodiment, the air conditioning garment generally includes a body and a controller that may be used to control the control flow disclosed in the embodiment of fig. 1 above.
Specifically, the controller is configured to:
controlling the air conditioner to execute at least one cold and hot expansion process in response to the air conditioner meeting the trigger condition of the self-cleaning mode, wherein the cold and hot expansion process comprises a refrigeration contraction process and a heating expansion process aiming at a heat exchanger to be cleaned;
and controlling the air conditioner to execute a defrosting process in response to the air conditioner meeting a defrosting triggering condition.
Optionally, the controller is specifically configured to:
and controlling the air conditioner to operate the refrigeration mode according to the set operation parameters so as to reduce the temperature of the heat exchanger to be cleaned to be below the set frost condensation temperature.
Optionally, the controller is specifically configured to:
and controlling the air conditioner to operate the heating mode according to the set operation parameters so as to increase the temperature of the heat exchanger to be cleaned to be higher than the set heating temperature.
Optionally, the controller is further configured to:
determining volume expansion parameters of a heat exchanger of the air conditioner and pollutants attached to the heat exchanger;
and setting the operation parameters of the refrigeration contraction process based on the volume expansion parameters of the heat exchanger and the pollutants.
Optionally, the controller is further configured to:
determining volume expansion parameters of a heat exchanger of the air conditioner and pollutants attached to the heat exchanger;
and setting the operation parameters of the heating expansion process based on the volume expansion parameters of the heat exchanger and the pollutants.
The specific manner in which the controller controls the above process can refer to the foregoing embodiments, and is not described herein again.
In an alternative embodiment, the air conditioning garment generally includes a body and a controller that may be used to control the control flow disclosed in the embodiment of fig. 2 above.
Specifically, the controller is configured to:
controlling the air conditioner to execute at least one cold and hot expansion process in response to the air conditioner meeting the trigger condition of the self-cleaning mode, wherein the cold and hot expansion process comprises a refrigeration contraction process and a heating expansion process aiming at a heat exchanger to be cleaned;
and controlling the air conditioner to execute a ventilation defrosting process in response to the air conditioner meeting the exit condition of the cold and hot expansion process.
Optionally, the controller is specifically configured to:
and controlling the air conditioner to operate the refrigeration mode according to the set operation parameters so as to reduce the temperature of the heat exchanger to be cleaned to be below the set frost condensation temperature.
Optionally, the controller is specifically configured to:
and controlling the air conditioner to operate the heating mode according to the set operation parameters so as to increase the temperature of the heat exchanger to be cleaned to be higher than the set heating temperature.
Optionally, the controller is further configured to:
determining volume expansion parameters of a heat exchanger of the air conditioner and pollutants attached to the heat exchanger;
and setting the operation parameters of the refrigeration contraction process based on the volume expansion parameters of the heat exchanger and the pollutants.
Optionally, the controller is further configured to:
determining volume expansion parameters of a heat exchanger of the air conditioner and pollutants attached to the heat exchanger;
and setting the operation parameters of the heating expansion process based on the volume expansion parameters of the heat exchanger and the pollutants.
The specific manner in which the controller controls the above process can refer to the foregoing embodiments, and is not described herein again.
In an alternative embodiment, the air conditioning garment generally includes a body and a controller that may be used to control the control flow disclosed in the embodiment of fig. 3 above.
Specifically, the controller is configured to:
controlling the air conditioner to execute at least one cold and hot expansion process in response to the air conditioner meeting the trigger condition of the self-cleaning mode, wherein the cold and hot expansion process comprises a refrigeration contraction process and a heating expansion process aiming at a heat exchanger to be cleaned;
and controlling the air conditioner to sequentially execute a frost condensation-defrosting process defined by the self-cleaning mode in response to the air conditioner meeting the exit condition of the cold and hot expansion process.
Optionally, the controller is specifically configured to:
and controlling the air conditioner to operate the refrigeration mode according to the set operation parameters so as to reduce the temperature of the heat exchanger to be cleaned to be below the set frost condensation temperature.
Optionally, the controller is specifically configured to:
and controlling the air conditioner to operate the heating mode according to the set operation parameters so as to increase the temperature of the heat exchanger to be cleaned to be higher than the set heating temperature.
Optionally, the controller is further configured to:
determining volume expansion parameters of a heat exchanger of the air conditioner and pollutants attached to the heat exchanger;
and setting the operation parameters of the refrigeration contraction process based on the volume expansion parameters of the heat exchanger and the pollutants.
Optionally, the controller is further configured to:
determining volume expansion parameters of a heat exchanger of the air conditioner and pollutants attached to the heat exchanger;
and setting the operation parameters of the heating expansion process based on the volume expansion parameters of the heat exchanger and the pollutants.
The specific manner in which the controller controls the above process can refer to the foregoing embodiments, and is not described herein again.
In yet another alternative embodiment, the air conditioning garment generally includes a body and a controller that may be used to control the control flow disclosed in the embodiment of fig. 4 above.
Specifically, the controller is configured to:
controlling the air conditioner to execute at least one cold and hot expansion process in response to the air conditioner meeting the trigger condition of the self-cleaning mode, wherein the cold and hot expansion process comprises a refrigeration contraction process and a heating expansion process aiming at a heat exchanger to be cleaned; the heating expansion process comprises the steps of controlling an electric heating device to heat a heat exchanger;
and controlling the air conditioner to execute a ventilation defrosting process in response to the air conditioner meeting the exit condition of the cold and hot expansion process.
Optionally, the controller is specifically configured to:
and controlling the air conditioner to operate the refrigeration mode according to the set operation parameters so as to reduce the temperature of the heat exchanger to be cleaned to be below the set frost condensation temperature.
Optionally, the controller is specifically configured to:
and controlling the air conditioner to operate the heating mode according to the set operation parameters so as to increase the temperature of the heat exchanger to be cleaned to be higher than the set heating temperature.
Optionally, the controller is further configured to:
determining volume expansion parameters of a heat exchanger of the air conditioner and pollutants attached to the heat exchanger;
and setting the operation parameters of the refrigeration contraction process based on the volume expansion parameters of the heat exchanger and the pollutants.
Optionally, the controller is further configured to:
determining volume expansion parameters of a heat exchanger of the air conditioner and pollutants attached to the heat exchanger;
and setting the operation parameters of the heating expansion process based on the volume expansion parameters of the heat exchanger and the pollutants.
The specific manner in which the controller controls the above process can refer to the foregoing embodiments, and is not described herein again.
In yet another alternative embodiment, the air conditioning garment generally includes a body and a controller that may be used to control the control flow disclosed in the embodiment of fig. 5 above.
Specifically, the controller is configured to:
controlling the air conditioner to execute at least one cold and hot expansion process in response to the air conditioner meeting the trigger condition of the self-cleaning mode, wherein the cold and hot expansion process comprises a refrigeration contraction process and a heating expansion process aiming at a heat exchanger to be cleaned; the heating expansion process comprises the steps of controlling an electric heating device to heat a heat exchanger;
and controlling the air conditioner to sequentially execute a frost condensation-defrosting process defined by the self-cleaning mode in response to the air conditioner meeting the exit condition of the cold and hot expansion process.
Optionally, the controller is specifically configured to:
and controlling the air conditioner to operate the refrigeration mode according to the set operation parameters so as to reduce the temperature of the heat exchanger to be cleaned to be below the set frost condensation temperature.
Optionally, the controller is specifically configured to:
and controlling the air conditioner to operate the heating mode according to the set operation parameters so as to increase the temperature of the heat exchanger to be cleaned to be higher than the set heating temperature.
Optionally, the controller is further configured to:
determining volume expansion parameters of a heat exchanger of the air conditioner and pollutants attached to the heat exchanger;
and setting the operation parameters of the refrigeration contraction process based on the volume expansion parameters of the heat exchanger and the pollutants.
Optionally, the controller is further configured to:
determining volume expansion parameters of a heat exchanger of the air conditioner and pollutants attached to the heat exchanger;
and setting the operation parameters of the heating expansion process based on the volume expansion parameters of the heat exchanger and the pollutants.
The specific manner in which the controller controls the above process can refer to the foregoing embodiments, and is not described herein again.
It is to be understood that the present invention is not limited to the procedures and structures described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the invention is limited only by the appended claims.

Claims (10)

1. A control method for self-cleaning of an air conditioner is characterized by comprising the following steps:
controlling the air conditioner to execute at least one cold and hot expansion process in response to the air conditioner meeting a trigger condition of a self-cleaning mode, wherein the cold and hot expansion process comprises a refrigeration contraction process and a heating expansion process aiming at a heat exchanger to be cleaned;
and controlling the air conditioner to execute a defrosting process in response to the air conditioner meeting a defrosting triggering condition.
2. The control method according to claim 1, wherein the controlling the air conditioner to perform the cooling contraction process includes:
and controlling the air conditioner to operate a refrigeration mode according to set operation parameters so as to reduce the temperature of the heat exchanger to be cleaned to be below the set frost condensation temperature.
3. The control method according to claim 1 or 2, wherein the controlling the air conditioner to perform the heating expansion process includes:
and controlling the air conditioner to operate a heating mode according to set operation parameters so as to increase the temperature of the heat exchanger to be cleaned to be higher than a set heating temperature.
4. The control method according to claim 1, characterized by further comprising:
determining a volume expansion parameter of the heat exchanger of the air conditioner and contaminants attached to the heat exchanger;
setting an operating parameter of the refrigeration contraction process based on the heat exchanger and the volumetric expansion parameter of the contaminant.
5. The control method according to claim 1, characterized by further comprising:
determining a volume expansion parameter of the heat exchanger of the air conditioner and contaminants attached to the heat exchanger;
and setting the operation parameters of the heating expansion process based on the volume expansion parameters of the heat exchanger and the pollutants.
6. An air conditioner, characterized in that, the air conditioner includes an organism and a controller, wherein, the controller is used for:
controlling the air conditioner to execute at least one cold and hot expansion process in response to the air conditioner meeting a trigger condition of a self-cleaning mode, wherein the cold and hot expansion process comprises a refrigeration contraction process and a heating expansion process aiming at a heat exchanger to be cleaned;
and controlling the air conditioner to execute a defrosting process in response to the air conditioner meeting a defrosting triggering condition.
7. The air conditioner of claim 6, wherein the controller is specifically configured to:
and controlling the air conditioner to operate a refrigeration mode according to set operation parameters so as to reduce the temperature of the heat exchanger to be cleaned to be below the set frost condensation temperature.
8. The air conditioner according to claim 6 or 7, wherein the controller is specifically configured to:
and controlling the air conditioner to operate a heating mode according to set operation parameters so as to increase the temperature of the heat exchanger to be cleaned to be higher than a set heating temperature.
9. The control method of claim 6, wherein the controller is further configured to:
determining a volume expansion parameter of the heat exchanger of the air conditioner and contaminants attached to the heat exchanger;
setting an operating parameter of the refrigeration contraction process based on the heat exchanger and the volumetric expansion parameter of the contaminant.
10. The control method of claim 6, wherein the controller is further configured to:
determining a volume expansion parameter of the heat exchanger of the air conditioner and contaminants attached to the heat exchanger;
and setting the operation parameters of the heating expansion process based on the volume expansion parameters of the heat exchanger and the pollutants.
CN201811007070.4A 2018-08-31 2018-08-31 Air conditioner and self-cleaning control method thereof Pending CN110873412A (en)

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Application Number Priority Date Filing Date Title
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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000320876A (en) * 1999-05-11 2000-11-24 Mitsubishi Electric Corp Air conditioner
CN107166670A (en) * 2017-06-14 2017-09-15 青岛海尔空调器有限总公司 A kind of self-cleaning control method and device of air conditioner
CN108800389A (en) * 2018-07-23 2018-11-13 东营市国睿节能科技有限公司 A kind of seawater air conditioning systems system and method for automatic desludging

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000320876A (en) * 1999-05-11 2000-11-24 Mitsubishi Electric Corp Air conditioner
CN107166670A (en) * 2017-06-14 2017-09-15 青岛海尔空调器有限总公司 A kind of self-cleaning control method and device of air conditioner
CN108800389A (en) * 2018-07-23 2018-11-13 东营市国睿节能科技有限公司 A kind of seawater air conditioning systems system and method for automatic desludging

Non-Patent Citations (1)

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M.C.施克罗勃..布罗赫罗夫: "《蒸汽轮机发电厂的水处理和水工况》", 30 April 1996 *

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Application publication date: 20200310