CN111256274B - Steam self-cleaning method and device and air conditioner - Google Patents
Steam self-cleaning method and device and air conditioner Download PDFInfo
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- CN111256274B CN111256274B CN201811457306.4A CN201811457306A CN111256274B CN 111256274 B CN111256274 B CN 111256274B CN 201811457306 A CN201811457306 A CN 201811457306A CN 111256274 B CN111256274 B CN 111256274B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28G—CLEANING OF INTERNAL OR EXTERNAL SURFACES OF HEAT-EXCHANGE OR HEAT-TRANSFER CONDUITS, e.g. WATER TUBES OR BOILERS
- F28G15/00—Details
- F28G15/003—Control arrangements
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28G—CLEANING OF INTERNAL OR EXTERNAL SURFACES OF HEAT-EXCHANGE OR HEAT-TRANSFER CONDUITS, e.g. WATER TUBES OR BOILERS
- F28G9/00—Cleaning by flushing or washing, e.g. with chemical solvents
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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
- F24F2221/00—Details or features not otherwise provided for
- F24F2221/22—Cleaning ducts or apparatus
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
Abstract
The invention discloses a steam self-cleaning method, and belongs to the technical field of self-cleaning of air conditioners. The method is used for cleaning a heat exchanger of an air conditioner, the air conditioner further comprises a steam generator and a spray head, and the method comprises the following steps: acquiring the time interval between the current cleaning and the last cleaning; and controlling the scanning step length of the spray head on the surface of the heat exchanger and the stay time of each scanning point according to the time interval. By adopting the alternative embodiment, the step length of the spray head in the surface scanning of the heat exchanger and the stay time of each scanning point are controlled according to the time interval between the self-cleaning and the last self-cleaning, so that the heat exchanger can be ensured to have more thorough cleaning effect, and the condition that the heat exchanger is not cleaned for a long time and the cleaning mode is consistent to cause incomplete cleaning is avoided. The invention also discloses a steam self-cleaning device and an air conditioner.
Description
Technical Field
The invention relates to the technical field of self-cleaning of air conditioners, in particular to a steam self-cleaning method and device and an air conditioner.
Background
Because the current air quality is poor, the filth blocking situation of the air conditioner heat exchanger is more and more serious, and the pollutants are mostly small particles and greasy dirt, and are difficult to clean.
At present, the main stream method of self-cleaning of the air conditioner is that frosting and defrosting are realized by a cold expansion stripping method, but the adhesion force of tiny particles is very large, and the cleaning capability is limited only by virtue of cold expansion, so that the thorough cleaning effect cannot be achieved.
Disclosure of Invention
The embodiment of the invention provides a steam self-cleaning method and device and an air conditioner. 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 an embodiment of the present invention, there is provided a steam self-cleaning method for cleaning a heat exchanger of an air conditioner, the air conditioner further comprising a steam generator and a spray head.
In some alternative embodiments, the method comprises the steps of: acquiring the time interval between the current cleaning and the last cleaning; and controlling the scanning step length of the spray head on the surface of the heat exchanger and the stay time of each scanning point according to the time interval.
By adopting the alternative embodiment, the scanning process of steam self-cleaning is controlled according to the time interval between the self-cleaning and the last self-cleaning, so that the cleaning effect of the heat exchanger can be ensured to be more thorough, and the condition that the heat exchanger is not cleaned for a long time and the cleaning mode is consistent to cause incomplete cleaning is avoided.
Optionally, the method further comprises the steps of: when the time interval meets a first time condition, controlling the scanning step length of the spray head on the surface of the heat exchanger to be a first step length, and controlling the stay time of the spray head at each scanning point to be a first time length.
With this alternative embodiment, the heat exchanger is cleaned with a larger step size and a shorter dwell time for the case where the time since the last cleaning is shorter.
Optionally, the first time condition is that the time interval is less than or equal to 6 months.
Optionally, the first time condition is obtained according to big data analysis, and is less than or equal to 1/3 of the average time interval of the region.
Optionally, the first step length is 2-3 cm, and the first duration is 1-2S.
Optionally, the method further comprises the steps of: when the time interval meets a second time condition, controlling the scanning step length of the spray head on the surface of the heat exchanger to be a second step length, and controlling the stay time of the spray head at each scanning point to be a second time length.
With this alternative embodiment, the heat exchanger is cleaned with a smaller step size and a longer dwell time for longer cleaning times from the last time.
Optionally, the second time condition is that the time interval is greater than 6 months.
Optionally, the second time condition is obtained from big data analysis to be greater than 1/3 of the average time interval of the region.
Optionally, the second step length is 1-2 cm, and the second duration is 2-4S.
Optionally, the method further comprises the steps of: obtaining the pollution degree of the heat exchanger; and according to the pollution degree, adjusting the scanning step length of the spray head on the surface of the heat exchanger and the stay time of each scanning point.
By adopting the alternative embodiment, the step length of the spray head in the surface scanning of the heat exchanger and the stay time of each scanning point are adjusted according to the actual pollution degree of the heat exchanger, so that the cleaning effect of the heat exchanger can be ensured to be more thorough.
Optionally, the method further comprises the steps of: obtaining the pollution degree of the heat exchanger; and adjusting the time interval according to the pollution degree.
By adopting the alternative embodiment, the time interval is corrected according to the pollution degree of the heat exchanger, so that the scanning step length of the spray head on the surface of the heat exchanger and the stay time of each scanning point can be controlled more accurately, and the cleaning effect of the heat exchanger is ensured to be more thorough.
Optionally, the method further comprises: acquiring the position of pollutants on the heat exchanger; and controlling the position of the spray head according to the position of the pollutant.
By adopting the alternative embodiment, the positions of the pollutants are positioned, the positions without the pollutants are cleaned rapidly, the positions with the pollutants are cleaned with emphasis, and the cleaning efficiency and the cleaning effect can be improved.
Optionally, the method further comprises the steps of: and controlling the pressure of steam injected to the heat exchanger according to the time interval.
By adopting the alternative embodiment, the steam pressure in the steam self-cleaning process is controlled according to the time interval between the self-cleaning and the last self-cleaning, so that the cleaning effect of the heat exchanger can be ensured to be more thorough, and the condition that the heat exchanger is not cleaned for a long time and the cleaning mode is consistent to cause incomplete cleaning is avoided.
Optionally, the method further comprises: and when the time interval meets a first time condition, controlling the pressure of steam injected to the heat exchanger to be a first pressure.
With this alternative embodiment, the heat exchanger is cleaned with a smaller steam pressure for a shorter time from the last cleaning.
Optionally, the first pressure is 30% to 60% of the maximum steam pressure.
Optionally, the method further comprises: and when the time interval meets a second time condition, controlling the pressure of steam injected to the heat exchanger to be a second pressure.
With this alternative embodiment, the heat exchanger is cleaned with a greater vapor pressure for longer times from the last cleaning.
Optionally, the second pressure is 60% to 100% of the maximum steam pressure.
According to a second aspect of an embodiment of the present invention, there is provided a steam self-cleaning device for cleaning a heat exchanger of an air conditioner, the device including a steam generating device, a shower head, and a driving device for carrying the shower head and moving in front of the heat exchanger, further including: the first unit is used for acquiring the time interval between the current cleaning and the last cleaning; and the second unit is used for controlling the scanning step length of the spray head on the surface of the heat exchanger and the stay time of each scanning point according to the time interval.
By adopting the alternative embodiment, the device controls the steam self-cleaning scanning process according to the time interval between the self-cleaning and the last self-cleaning, so that the cleaning effect of the heat exchanger can be ensured to be more thorough, and the condition that the heat exchanger is not cleaned for a long time and the cleaning mode is consistent to cause incomplete cleaning is avoided.
Optionally, the second unit further stores a first time condition, and when the time interval meets the first time condition, the second unit controls the step length of scanning the nozzle on the surface of the heat exchanger to be a first step length, and controls the stay time of the nozzle at each scanning point to be a first time length.
With this alternative embodiment, the heat exchanger is cleaned with a larger step size and a shorter dwell time for the case where the time since the last cleaning is shorter.
Optionally, the first time condition is that the time interval is less than or equal to 6 months.
Optionally, the first time condition is obtained according to big data analysis, and is less than or equal to 1/3 of the average time interval of the region.
Optionally, the first step length is 2-3 cm, and the first duration is 1-2S.
Optionally, the second unit further stores a second time condition, and when the time interval meets the second time condition, the second unit controls the step length of scanning the nozzle on the surface of the heat exchanger to be a second step length, and controls the stay time of the nozzle at each scanning point to be a second time length.
With this alternative embodiment, the heat exchanger is cleaned with a smaller step size and a longer dwell time for longer cleaning times from the last time.
Optionally, the second time condition is that the time interval is greater than 6 months.
Optionally, the second time condition is obtained from big data analysis to be greater than 1/3 of the average time interval of the region.
Optionally, the second step length is 1-2 cm, and the second duration is 2-4S.
Optionally, the device further comprises a first scanning unit and a third unit, wherein the first scanning unit is used for acquiring the pollution degree of the heat exchanger, and the third unit adjusts the step length of the spray head in the surface scanning of the heat exchanger and the stay time of each scanning point according to the pollution degree.
By adopting the alternative embodiment, the step length of the spray head in the surface scanning of the heat exchanger and the stay time of each scanning point are adjusted according to the actual pollution degree of the heat exchanger, so that the cleaning effect of the heat exchanger can be ensured to be more thorough.
Optionally, the device further comprises a second scanning unit and a fourth unit, wherein the second scanning unit is used for acquiring the position of the pollutant on the heat exchanger, and the fourth unit is used for controlling the position of the spray head according to the position of the pollutant.
By adopting the alternative embodiment, the device positions the pollutant, the position without the pollutant is cleaned rapidly, the position with the pollutant is cleaned with focus, and the cleaning efficiency and the cleaning effect can be improved.
Optionally, the second unit is further configured to control the pressure of steam injected to the heat exchanger according to the time interval.
By adopting the alternative embodiment, the steam pressure in the steam self-cleaning process is controlled according to the time interval between the self-cleaning and the last self-cleaning, so that the cleaning effect of the heat exchanger can be ensured to be more thorough, and the condition that the heat exchanger is not cleaned for a long time and the cleaning mode is consistent to cause incomplete cleaning is avoided.
Optionally, the second unit is further configured to control the pressure of the steam injected into the heat exchanger to be the first pressure when the time interval satisfies a first time condition.
With this alternative embodiment, the device cleans the heat exchanger with a smaller vapor pressure for a shorter time from the last cleaning.
Optionally, the first pressure is 30% to 60% of the maximum steam pressure.
Optionally, the second unit is further configured to control the pressure of the steam injected into the heat exchanger to be a second pressure when the time interval satisfies a second time condition.
With this alternative embodiment, the device cleans the heat exchanger with a greater vapor pressure for longer times from the last cleaning.
Optionally, the second pressure is 60% to 100% of the maximum steam pressure.
According to a third aspect of embodiments of the present invention, there is provided an air conditioner, the air conditioner including a heat exchanger, and further including the steam self-cleaning device according to any one of the foregoing optional embodiments.
By adopting the alternative embodiment, the air conditioner controls the steam self-cleaning process according to the time interval between the current self-cleaning and the last self-cleaning, so that the cleaning effect of the heat exchanger can be ensured to be more thorough, and the condition that the heat exchanger is not cleaned for a long time and the cleaning mode is consistent to cause incomplete cleaning is avoided.
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
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention.
FIG. 1 is a schematic flow diagram illustrating a steam self-cleaning method according to an exemplary embodiment;
FIG. 2 is a schematic flow diagram of a steam self-cleaning method according to another example embodiment;
FIG. 3 is a block diagram of a steam self-cleaning device, according to an example embodiment;
FIG. 4 is a block diagram of a steam self-cleaning device, according to another example embodiment;
FIG. 5 is a block diagram of a steam self-cleaning device, according to another example embodiment;
fig. 6 is a block diagram illustrating a steam self-cleaning device according to another exemplary embodiment.
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 involve structural, logical, electrical, process, and other changes. The embodiments represent only 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. 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 necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, 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 one … …" does not exclude the presence of other like elements in a process, method or apparatus comprising such elements. Various embodiments are described herein in a progressive manner, each embodiment focusing on differences from other embodiments, and identical and similar parts between the various embodiments are sufficient to be seen with each other. The method, product and the like disclosed in the examples are relatively simple to describe because they correspond to the method parts disclosed in the examples, and the relevant points are only referred to the description of the method parts.
Fig. 1 shows an alternative embodiment of a steam self-cleaning method.
In this alternative embodiment, the method is used for cleaning a heat exchanger of an air conditioner, the air conditioner further comprising a steam generator and a spray head, the method comprising the steps of: step 11, obtaining the time interval between the current cleaning and the last cleaning; and step 12, controlling the scanning step length of the spray head on the surface of the heat exchanger and the stay time of each scanning point according to the time interval.
Optionally, the spray head is arranged in front of the heat exchanger. Optionally, the spray head moves in front of the heat exchanger under the drive of the drive device. Optionally, the drive means is moveable unidirectionally along the heat exchanger surface. Optionally, the drive means moves along the plane of the heat exchanger surface.
Optionally, the pressure and temperature of the steam generated by the steam generator are controllable.
By adopting the alternative embodiment, the scanning process of steam self-cleaning is controlled according to the time interval between the self-cleaning and the last self-cleaning, so that the cleaning effect of the heat exchanger can be ensured to be more thorough, and the condition that the heat exchanger is not cleaned for a long time and the cleaning mode is consistent to cause incomplete cleaning is avoided.
For example, the controller of the air conditioner records the time of each steam self-cleaning process, further obtains the time interval between the current cleaning and the last cleaning, and controls the step length of the spray head in the surface scanning of the heat exchanger and the stay time of each scanning point according to the time interval.
Optionally, the method further comprises the steps of: when the time interval meets a first time condition, controlling the scanning step length of the spray head on the surface of the heat exchanger to be a first step length, and controlling the stay time of the spray head at each scanning point to be a first time length.
With this alternative embodiment, the heat exchanger is cleaned with a larger step size and a shorter dwell time for the case where the time since the last cleaning is shorter.
Optionally, the first time condition is that the time interval is less than or equal to 6 months.
Optionally, the first time condition is obtained according to big data analysis, and is less than or equal to 1/3 of the average time interval of the region.
Optionally, the first time condition is obtained according to big data analysis of the usage habit of the user. And the average time interval of cleaning the air conditioner for the user corresponding to the air conditioner is less than or equal to 1/3. Specifically, the use environment of the air conditioner is a direct factor affecting the pollution level of the air conditioner, and when there are many impurities floating in the application environment of the air conditioner, for example: in application environments such as small-sized workshops or kitchens, the air conditioner is easy to pollute, and a user can start cleaning by himself in order to improve the operation efficiency of the air conditioner. And analyzing the using habit of the user according to the big data to determine that the first time condition is more in line with the habit of the user, so that the cleaning timeliness is improved, and the user experience is further improved.
Optionally, the first step length is 2-3 cm, and the first duration is 1-2S.
For example, the controller of the air conditioner records the time of the last steam self-cleaning process, subtracts the time of the current steam self-cleaning process, obtains a time interval, for example, the time interval of the two cleaning processes is 2 months, and if the first time condition is met, the first time condition corresponds to the condition that the interval of the two cleaning processes is shorter, and because the time interval is shorter, the pollution degree of the default heat exchanger is lower, and the heat exchanger is cleaned by adopting a larger step length and a shorter residence time.
Optionally, the method further comprises the steps of: when the time interval meets a second time condition, controlling the scanning step length of the spray head on the surface of the heat exchanger to be a second step length, and controlling the stay time of the spray head at each scanning point to be a second time length.
With this alternative embodiment, the heat exchanger is cleaned with a smaller step size and a longer dwell time for longer cleaning times from the last time.
Optionally, the second time condition is that the time interval is greater than 6 months.
Optionally, the second time condition is obtained from big data analysis to be greater than 1/3 of the average time interval of the region.
Optionally, the second time condition is obtained by analyzing the usage habit of the user according to big data. Is greater than 1/3 of the average time interval for cleaning the air conditioner by the corresponding user of the air conditioner. Specifically, the use environment of the air conditioner is a direct factor affecting the pollution level of the air conditioner, and when there are many impurities floating in the application environment of the air conditioner, for example: in application environments such as small-sized workshops or kitchens, the air conditioner is easy to pollute, and a user can start cleaning by himself in order to improve the operation efficiency of the air conditioner. And the second time condition is determined to be more accordant with the habit of the user according to the using habit of the big data analysis user, so that the cleaning timeliness is improved, and the user experience is further improved.
Optionally, the second step length is 1-2 cm, and the second duration is 2-4S.
For example, the controller of the air conditioner records the time of the last steam self-cleaning process, subtracts the time of the current steam self-cleaning process, obtains a time interval, for example, the time interval of the two cleaning processes is 12 months, and if a second time condition is met, the second time condition corresponds to the condition that the interval of the two cleaning processes is longer, and because the time interval is longer, the default heat exchanger has higher pollution degree, and the heat exchanger is cleaned by adopting smaller step length and longer residence time.
Optionally, the method further comprises the steps of: obtaining the pollution degree of the heat exchanger; and according to the pollution degree, adjusting the scanning step length of the spray head on the surface of the heat exchanger and the stay time of each scanning point.
By adopting the alternative embodiment, the step length of the spray head in the surface scanning of the heat exchanger and the stay time of each scanning point are adjusted according to the actual pollution degree of the heat exchanger, so that the cleaning effect of the heat exchanger can be ensured to be more thorough.
For example, the air conditioner further comprises an optical distance meter, the optical distance meter is used for scanning the surface of the heat exchanger, and the optical distance meter obtains different optical paths after reflection due to different thickness of the attached pollutants, so that the attached pollutant amount can be obtained according to the distance of the optical paths, and further the pollution degree of the heat exchanger is obtained. And then, the controller adjusts the scanning step length of the spray head on the surface of the heat exchanger and the stay time of each scanning point according to the pollution degree of the heat exchanger, so that the heat exchanger is cleaned, and the cleaning effect is ensured.
For another example, the air conditioner further comprises an infrared scanner, the infrared scanner is used for scanning the surface of the heat exchanger, and the infrared scanner obtains different temperature distribution of a heat map after reflection due to different thickness of the attached pollutants, and the attached pollutant amount can be obtained according to the temperature distribution, so that the pollution degree of the heat exchanger is obtained. And then, the controller adjusts the scanning step length of the spray head on the surface of the heat exchanger and the stay time of each scanning point according to the pollution degree of the heat exchanger, so that the heat exchanger is cleaned, and the cleaning effect is ensured.
Optionally, the method further comprises the steps of: obtaining the pollution degree of the heat exchanger; and adjusting the time interval according to the pollution degree.
By adopting the alternative embodiment, the time interval is corrected according to the pollution degree of the heat exchanger, so that the scanning step length of the spray head on the surface of the heat exchanger and the stay time of each scanning point can be controlled more accurately, and the cleaning effect of the heat exchanger is ensured to be more thorough.
Optionally, the method further comprises: acquiring the position of pollutants on the heat exchanger; and controlling the position of the spray head according to the position of the pollutant.
By adopting the alternative embodiment, the positions of the pollutants are positioned, the positions without the pollutants are cleaned rapidly, the positions with the pollutants are cleaned with emphasis, and the cleaning efficiency and the cleaning effect can be improved.
For example, the air conditioner further comprises an optical distance meter, the optical distance meter is used for obtaining the optical path of each position on the heat exchanger in an optical distance measuring mode, and the optical path obtained by the optical distance meter is different after reflection due to different thickness of the attached pollutants, so that the position of the pollutants can be obtained according to the distance of the optical path. Then, the controller controls the position of the spray head according to the position of the pollutant, the position with less pollutant is cleaned rapidly, and the position with more pollutant is cleaned with emphasis.
For another example, the air conditioner further comprises an infrared scanner, the infrared scanner is used for scanning the surface of the heat exchanger, and the temperature distribution of the heat map obtained by the infrared scanner after reflection is different due to different thickness of the attached pollutants, so that the position distribution of the pollutants can be obtained according to the temperature distribution. Then, the controller controls the position of the spray head according to the position of the pollutant, the position with less pollutant is cleaned rapidly, and the position with more pollutant is cleaned with emphasis.
Fig. 2 shows another alternative embodiment of the steam self-cleaning method.
In this alternative embodiment, the method includes: step 21, obtaining the time interval between the current cleaning and the last cleaning; step 22, controlling the scanning step length of the spray head on the surface of the heat exchanger and the stay time of each scanning point according to the time interval; and step 23, controlling the pressure of steam sprayed to the heat exchanger according to the time interval.
By adopting the alternative embodiment, the steam pressure in the steam self-cleaning process is controlled according to the time interval between the self-cleaning and the last self-cleaning, so that the cleaning effect of the heat exchanger can be ensured to be more thorough, and the condition that the heat exchanger is not cleaned for a long time and the cleaning mode is consistent to cause incomplete cleaning is avoided.
For example, the controller of the air conditioner records the time of each steam self-cleaning process, further obtains the time interval between the current cleaning and the last cleaning, and controls the steam pressure sprayed to the heat exchanger according to the time interval.
Optionally, the method further comprises: and when the time interval meets a first time condition, controlling the pressure of steam injected to the heat exchanger to be a first pressure.
With this alternative embodiment, the heat exchanger is cleaned with a smaller steam pressure for a shorter time from the last cleaning.
Optionally, the first pressure is 30% to 60% of the maximum steam pressure.
For example, the controller of the air conditioner records the time of the last steam self-cleaning process, subtracts the time of the current steam self-cleaning process, obtains a time interval, for example, the time interval of two cleaning processes is 2 months, if a first time condition is met, wherein the first time condition corresponds to the condition that the interval of two cleaning processes is shorter, the pollution degree of the default heat exchanger is lower due to the shorter time interval, and controls the steam pressure to be the first pressure, wherein the pressure of the first pressure is lower for cleaning the heat exchanger with lower pollution degree.
Optionally, the method further comprises: and when the time interval meets a second time condition, controlling the pressure of steam injected to the heat exchanger to be a second pressure.
With this alternative embodiment, the heat exchanger is cleaned with a greater vapor pressure for longer times from the last cleaning.
Optionally, the second pressure is 60% to 100% of the maximum steam pressure.
For example, the controller of the air conditioner records the time of the last steam self-cleaning process, subtracts the time of the current steam self-cleaning process, obtains a time interval, for example, the time interval of the two cleaning processes is 12 months, and if a second time condition is satisfied, the second time condition corresponds to the situation that the interval of the two cleaning processes is longer, because the time interval is longer, the pollution degree of the default heat exchanger is higher, the steam pressure is controlled to be the second pressure, wherein the pressure of the second pressure is higher, and the controller is used for cleaning the heat exchanger with higher pollution degree.
Optionally, the method further comprises the steps of: and adjusting the steam pressure according to the pollution degree.
By adopting the alternative embodiment, the steam pressure is adjusted according to the actual pollution degree of the heat exchanger, so that the cleaning effect of the heat exchanger can be ensured to be more thorough.
Alternatively, the pressure of the steam injected into the heat exchanger is adjusted by controlling the pressure of the steam generated by the steam generator.
Optionally, a control valve is arranged at the inlet of the nozzle, the inlet flow of the nozzle is adjustable, and when the pressure of steam sprayed to the heat exchanger by the nozzle is adjusted, the steam flowing through the nozzle in unit time is reduced or increased by controlling the control valve at the inlet of the nozzle, so that the steam pressure is reduced or increased.
Optionally, a control valve is arranged at the outlet of the spray head, the outlet flow of the spray head is adjustable, and when the pressure of steam sprayed to the heat exchanger by the spray head is adjusted, the pressure of the steam sprayed to the heat exchanger is reduced or increased by controlling the control valve at the outlet of the spray head.
Fig. 3 shows an alternative embodiment of the steam self-cleaning device.
In this alternative embodiment, the device is used for cleaning an air conditioner heat exchanger, the device comprises a steam generating device 20, a spray head 30 and a driving device 60, the driving device 60 is used for carrying the spray head 30 and moving in front of the heat exchanger, and the device further comprises: a first unit 41, configured to obtain a time interval between the current cleaning and the last cleaning; a second unit 42, configured to control, according to the time interval, a step size of scanning the surface of the heat exchanger and a duration of stay of the nozzle 30 at each scanning point.
Optionally, the drive means is moveable unidirectionally along the heat exchanger surface. Optionally, the drive 60 is movable along the plane of the heat exchanger surface.
The spray head 30 is mounted on the driving device 60, so that the step length of scanning the spray head 30 on the surface of the heat exchanger is the step length of moving the driving device 60, and the stay time of the spray head 30 at each scanning point is the stay time of the driving device 60 at each scanning point.
Optionally, the pressure and temperature of the steam generated by the steam generator are controllable.
By adopting the alternative embodiment, the device controls the steam self-cleaning scanning process according to the time interval between the self-cleaning and the last self-cleaning, so that the cleaning effect of the heat exchanger can be ensured to be more thorough, and the condition that the heat exchanger is not cleaned for a long time and the cleaning mode is consistent to cause incomplete cleaning is avoided.
Optionally, the second unit 42 further stores a first time condition, and when the time interval meets the first time condition, the second unit 42 controls a step length of scanning the nozzle 30 on the surface of the heat exchanger to be a first step length, and controls a stay time of the nozzle 30 at each scanning point to be a first time length.
With this alternative embodiment, the heat exchanger is cleaned with a larger step size and a shorter dwell time for the case where the time since the last cleaning is shorter.
Optionally, the first time condition is that the time interval is less than or equal to 6 months.
Optionally, the first time condition is obtained according to big data analysis, and is less than or equal to 1/3 of the average time interval of the region.
Optionally, the first time condition is obtained according to big data analysis of the usage habit of the user. And the average time interval of cleaning the air conditioner for the user corresponding to the air conditioner is less than or equal to 1/3. Optionally, the first step length is 2-3 cm, and the first duration is 1-2S.
Optionally, the second unit 42 further stores a second time condition, and when the time interval meets the second time condition, the second unit 42 controls a step length of scanning the nozzle 30 on the surface of the heat exchanger to be a second step length, and controls a stay time of the nozzle 30 at each scanning point to be a second time length.
With this alternative embodiment, the heat exchanger is cleaned with a smaller step size and a longer dwell time for longer cleaning times from the last time.
Optionally, the second time condition is that the time interval is greater than 6 months.
Optionally, the second time condition is obtained from big data analysis to be greater than 1/3 of the average time interval of the region.
Optionally, the second step length is 1-2 cm, and the second duration is 2-4S.
Optionally, the second time condition is obtained by analyzing the usage habit of the user according to big data. Is greater than 1/3 of the average time interval for cleaning the air conditioner by the corresponding user of the air conditioner.
Fig. 4 shows another alternative embodiment of the steam self-cleaning device.
In this alternative embodiment, the apparatus further comprises a first scanning unit 51, and the first scanning unit 51 is configured to obtain the contamination level of the heat exchanger. Optionally, the device further comprises a third unit 43, and the third unit 43 is used for adjusting the step length of the scanning of the spray head 30 on the surface of the heat exchanger and the stay time of each scanning point according to the pollution degree.
With the alternative embodiment, the device adjusts the step length of the spray head 30 in the scanning of the surface of the heat exchanger and the stay time of each scanning point according to the actual pollution degree of the heat exchanger, so that the cleaning effect of the heat exchanger can be ensured to be more thorough.
For example, the device further comprises an optical distance meter, the surface of the heat exchanger is scanned by the optical distance meter, and the optical distance meter obtains different optical paths after reflection due to different thickness of the attached pollutants, so that the attached pollutant amount can be obtained according to the distance of the optical paths, and further the pollution degree of the heat exchanger is obtained. Then, the third unit 43 adjusts the step length of the spray head 30 in scanning the surface of the heat exchanger and the stay time of each scanning point according to the pollution degree of the heat exchanger, so as to clean the heat exchanger and ensure the cleaning effect.
For another example, the device further comprises an infrared scanner, the infrared scanner is used for scanning the surface of the heat exchanger, and the infrared scanner obtains different temperature distribution of the heat map after reflection due to different thickness of the attached pollutants, and the attached pollutant amount can be obtained according to the temperature distribution, so that the pollution degree of the heat exchanger is obtained. Then, the third unit 43 adjusts the step length of the spray head 30 in scanning the surface of the heat exchanger and the stay time of each scanning point according to the pollution degree of the heat exchanger, so as to clean the heat exchanger and ensure the cleaning effect.
Optionally, the apparatus further comprises a fifth unit for adjusting the time interval according to the contamination level.
By adopting the alternative embodiment, the time interval is corrected according to the pollution degree of the heat exchanger, so that the scanning step length of the spray head 30 on the surface of the heat exchanger and the stay time of each scanning point can be controlled more accurately, and the cleaning effect of the heat exchanger is ensured to be more thorough.
Fig. 5 shows another alternative embodiment of the steam self-cleaning device.
In this alternative embodiment, the apparatus further comprises a second scanning unit 52, said second scanning unit 52 being adapted to obtain the location of the contaminants on the heat exchanger. Optionally, the apparatus further comprises a fourth unit 44, the fourth unit 44 controlling the position of the spray head 30 according to the position of the contaminant.
By adopting the alternative embodiment, the device can accurately position the pollutant, has few positioning steps, high measurement efficiency, quick cleaning of the pollutant-free position and important cleaning of the pollutant-free position.
For example, the device further comprises an optical distance meter, the optical distance meter is used for obtaining the optical path of each position on the heat exchanger in an optical distance measuring mode, and the optical path obtained by the optical distance meter is different after reflection due to different thickness of the attached pollutants, so that the position of the pollutants can be obtained according to the distance of the optical path. Then, the fourth unit 44 controls the position of the spray head 30 according to the position of the contaminant, and the position with less contaminant is cleaned quickly and the position with more contaminant is cleaned with emphasis.
For another example, the device further comprises an infrared scanner, the infrared scanner is used for scanning the surface of the heat exchanger, the temperature distribution of the heat map obtained by the infrared scanner after reflection is different due to different thickness of the attached pollutants, and the position distribution of the pollutants can be obtained according to the temperature distribution. Then, the fourth unit 44 controls the position of the spray head 30 according to the position of the contaminant, and the position with less contaminant is cleaned quickly and the position with more contaminant is cleaned with emphasis.
Fig. 6 shows another alternative embodiment of the steam self-cleaning device.
In this alternative embodiment, the second unit 42 is also adapted to control the pressure of the steam injected into the heat exchanger in accordance with the time interval.
By adopting the alternative embodiment, the device controls the steam pressure in the steam self-cleaning process according to the time interval between the current self-cleaning and the last self-cleaning, so that the cleaning effect of the heat exchanger can be ensured to be more thorough, and the condition that the cleaning is not thorough due to the fact that the heat exchanger is not cleaned for a long time and the cleaning mode is consistent is avoided.
For example, the first unit 41 records the time of each steam self-cleaning process, and further obtains the time interval between the current cleaning and the last cleaning. The second unit 42 controls the pressure of the steam injected to the heat exchanger according to the time interval.
Optionally, the second unit 42 controls the pressure of steam injected to the heat exchanger to a first pressure when the time interval satisfies a first time condition.
With this alternative embodiment, the device cleans the heat exchanger with a smaller vapor pressure for a shorter time from the last cleaning.
Optionally, the first pressure is 30% to 60% of the maximum steam pressure.
For example, the first unit 41 records the time of the last steam self-cleaning process, subtracts the time of the current steam self-cleaning process, obtains a time interval, for example, the time interval of two cleaning processes is 2 months, and if the first time condition is satisfied, the first time condition corresponds to the case that the interval of two cleaning processes is shorter, and the default heat exchanger pollution degree is lower due to the shorter time interval, the second unit 42 controls the steam pressure to be the first pressure, wherein the pressure of the first pressure is lower, and the second unit is used for cleaning the heat exchanger with lower pollution degree.
Optionally, the second unit 42 controls the pressure of steam injected to the heat exchanger to a second pressure when the time interval satisfies a second time condition.
With this alternative embodiment, the device cleans the heat exchanger with a greater vapor pressure for longer times from the last cleaning.
Optionally, the second pressure is 60% to 100% of the maximum steam pressure.
For example, the first unit 41 records the time of the last steam self-cleaning process, subtracts the time of the current steam self-cleaning process, obtains a time interval, for example, the time interval of two cleaning processes is 12 months, and if a second time condition is satisfied, the second time condition corresponds to the case that the interval of two cleaning processes is longer, and the default heat exchanger pollution degree is higher due to the longer time interval, the second unit 42 controls the steam pressure to be a second pressure, wherein the pressure of the second pressure is higher, and the second unit is used for cleaning the heat exchanger with higher pollution degree.
Alternatively, the second unit 42 adjusts the pressure of the steam injected to the heat exchanger by controlling the pressure of the steam generated by the steam generator.
Optionally, a control valve is disposed at the inlet of the nozzle 30, the inlet flow rate of the nozzle 30 is adjustable, and the second unit 42 reduces or increases the amount of steam flowing through the nozzle 30 in a unit time by controlling the control valve at the inlet of the nozzle 30 when adjusting the pressure of steam injected into the heat exchanger by the nozzle 30, so as to reduce or increase the pressure of steam.
Optionally, a control valve is disposed at the outlet of the nozzle 30, the outlet flow rate of the nozzle 30 is adjustable, and the second unit 42 reduces or increases the steam pressure injected into the heat exchanger by controlling the control valve at the outlet of the nozzle 30 when adjusting the steam pressure injected into the heat exchanger by the nozzle 30.
In some alternative embodiments, an air conditioner is provided that includes a heat exchanger, and further includes the vapor self-cleaning apparatus described above.
Those of skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the solution. Those skilled in the art may implement the described functionality using different approaches for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention. It will be clear to those skilled in the art that, for convenience and brevity of description, specific working procedures of the above-described systems, apparatuses and units may refer to corresponding procedures in the foregoing method embodiments, and are not repeated herein.
In the embodiments disclosed herein, it should be understood that the disclosed methods, products (including but not limited to devices, apparatuses, etc.) may be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative, e.g., the division of the units is merely a logical function division, and there may be additional divisions when actually implemented, e.g., multiple units or components may be combined or integrated into another system, or some features may be omitted or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be an indirect coupling or communication connection via some interfaces, devices or units, which may be in electrical, mechanical or other form. The units described as separate units may or may not be physically separate, and units shown as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment. In addition, each functional unit in the embodiments of the present invention may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit.
It should be appreciated that the flow charts and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of systems, methods and computer program products according to various embodiments of the present invention. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). It should also be noted that, in some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. It will also be noted that each block of the block diagrams and/or flowchart illustration, and combinations of blocks in the block diagrams and/or flowchart illustration, can be implemented by special purpose hardware-based systems which perform the specified functions or acts, or combinations of special purpose hardware and computer instructions. The invention is not limited to the flow and structure that has been described above and shown in the drawings, and various modifications and changes can be made without departing from the scope thereof. The scope of the invention is limited only by the appended claims.
Claims (6)
1. A steam self-cleaning method for cleaning a heat exchanger of an air conditioner, the air conditioner further comprising a steam generator and a spray head, characterized by comprising the steps of:
acquiring the time interval between the current cleaning and the last cleaning;
obtaining the pollution degree of the heat exchanger;
adjusting the time interval according to the pollution degree;
according to the adjusted time interval, controlling the scanning step length of the spray head on the surface of the heat exchanger and the stay time of each scanning point; when the adjusted time interval meets a first time condition, controlling the step length of the spray head in the surface scanning of the heat exchanger to be a first step length, and controlling the stay time of the spray head at each scanning point to be a first time length; when the adjusted time interval meets a second time condition, controlling the step length of the spray head in the surface scanning of the heat exchanger to be a second step length, and controlling the stay time of the spray head at each scanning point to be a second time length; the first time condition and the second time condition are obtained by analyzing the using habit of the user according to big data; the first step size is larger than the second step size; the first time period is less than the second time period.
2. The method of claim 1, wherein the step of determining the position of the substrate comprises,
the first time condition is less than or equal to 1/3 of the average time interval of the air conditioner cleaning by the corresponding user of the air conditioner.
3. The method of claim 1, wherein the step of determining the position of the substrate comprises,
the second time condition is greater than 1/3 of the average time interval of the air conditioner cleaning by the corresponding user of the air conditioner.
4. The utility model provides a steam self-cleaning device for clean air conditioner heat exchanger, its characterized in that includes steam generation device, shower nozzle and drive arrangement, drive arrangement is used for bearing the shower nozzle and at the heat exchanger place ahead removal still includes:
the first unit is used for acquiring the time interval between the current cleaning and the last cleaning;
the first scanning unit is used for acquiring the pollution degree of the heat exchanger;
a fifth unit for adjusting the time interval according to the pollution level;
the second unit is used for controlling the scanning step length of the spray head on the surface of the heat exchanger and the stay time of each scanning point according to the adjusted time interval; when the adjusted time interval meets a first time condition, controlling the step length of the spray head in the surface scanning of the heat exchanger to be a first step length, and controlling the stay time of the spray head at each scanning point to be a first time length; when the adjusted time interval meets a second time condition, controlling the step length of the spray head in the surface scanning of the heat exchanger to be a second step length, and controlling the stay time of the spray head at each scanning point to be a second time length; the first time condition and the second time condition are obtained by analyzing the using habit of the user according to big data; the first step size is larger than the second step size; the first time period is less than the second time period.
5. The apparatus of claim 4, further comprising a second scanning unit for acquiring a location of a contaminant on the heat exchanger and a fourth unit for controlling a location of the spray head based on the location of the contaminant.
6. An air conditioner comprising a heat exchanger, further comprising the steam self-cleaning device according to claim 4 or 5.
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