CN113203180A - Filter screen filth blockage judging method and air conditioner indoor unit - Google Patents
Filter screen filth blockage judging method and air conditioner indoor unit Download PDFInfo
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- CN113203180A CN113203180A CN202110423882.2A CN202110423882A CN113203180A CN 113203180 A CN113203180 A CN 113203180A CN 202110423882 A CN202110423882 A CN 202110423882A CN 113203180 A CN113203180 A CN 113203180A
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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
- F24F11/32—Responding to malfunctions or emergencies
- F24F11/39—Monitoring filter performance
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/50—Control or safety arrangements characterised by user interfaces or communication
- F24F11/61—Control or safety arrangements characterised by user interfaces or communication using timers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
- F24F11/74—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity
- F24F11/77—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity by controlling the speed of ventilators
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- 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
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- Air Conditioning Control Device (AREA)
Abstract
The invention discloses a method for judging filth blockage of a filter screen and an air conditioner indoor unit, wherein the method for judging filth blockage of the filter screen comprises the following steps: presetting a set filth blockage value of the filter screen, wherein the set filth blockage value is a filth blockage period of the filter screen under a standard operation condition; presetting various operation conditions and filth blockage coefficients; recording the operation time of each operation condition; calculating the sum of the products of the running time of each running condition and the corresponding filth blockage coefficient, and defining the sum as an actual filth blockage value; and comparing the actual filth blockage value with the set filth blockage value, and judging whether filth blockage exists. The air-conditioning indoor unit comprises a controller which is provided with a judging method. The standard filth blockage period of the filter screen is determined by setting a filth blockage value; a filth blockage coefficient is set according to the filth blockage influence degree of the filter screen under various operation conditions, so that the measurement of the actual filth blockage value on the filth blockage degree is more accurate; the dirty blockage coefficient is set according to the set dirty blockage value as a standard, so that the actual dirty blockage value and the set dirty blockage value have a unified standard, and the judgment is more accurate.
Description
Technical Field
The invention relates to the technical field of air conditioning, in particular to a method for judging filth blockage of a filter screen and an air conditioner indoor unit.
Background
With the improvement of living standard of people, electrical equipment such as air conditioners, purifiers and the like are widely applied and gradually become necessities of daily life of people. Generally, these electrical equipment all install the filter screen and filter the air, and along with electrical equipment's long-time operation, can adsorb a large amount of dust on the filter screen, cause harmful effects to people's health. Therefore, in order to avoid adverse effects on users, it is necessary to clean or replace the filter screen in time when the filter screen is dirty and clogged.
At present, the filth blockage of the filter screen is mostly judged by using a mode of detecting the time length or infrared rays or judging the pressure of an air duct or the power of a fan. Although the filter screen has the function of reminding people of paying attention to the problem of filth blockage of the filter screen, certain errors exist.
Disclosure of Invention
In order to solve the problem that filter screen filth blockage judgment in the prior art is inaccurate, the invention provides a filter screen filth blockage judgment method and an air conditioner indoor unit, which are used for accurately judging filter screen filth blockage conditions and improving the accuracy of filter screen filth blockage judgment.
In order to achieve the purpose, the invention adopts the following technical scheme:
the invention provides a method for judging filth blockage of a filter screen, which comprises the following steps:
presetting a set filth blockage value of the filter screen, wherein the set filth blockage value is a filth blockage period of the filter screen under a standard operation condition;
presetting various operation conditions and filth blockage coefficients thereof; the filth blockage coefficient is determined according to the filth blockage influence degree of each operating condition on the filter screen;
recording the operation time of each operation condition; calculating the sum of the products of the running time of each operating condition and the dirty blockage coefficient corresponding to the operating condition, and defining the sum as an actual dirty blockage value;
and comparing the actual filth blockage value with the set filth blockage value, and judging whether filth blockage exists.
In one embodiment, the operating condition includes two factors, respectively: pollution grade and fan rotating speed grade;
presetting a plurality of pollution levels and a plurality of fan rotating speed levels;
different combinations of each of the pollution levels and each of the fan speed levels define different ones of the operating conditions.
In one embodiment, each of the contamination levels is set according to a concentration range of one or more diameters of particulate matter.
In an embodiment, the method for determining that a filter screen is dirty and clogged further includes:
circularly acquiring the concentration of one or more diameters of particulate matters in the environment and the rotating speed of a fan, and determining the current pollution level and the current rotating speed level of the fan so as to determine the current operating condition;
judging whether the current operating condition is the same as the previous operating condition or not;
when the current operating condition is different from the previous operating condition, the current actual filth value is calculated.
In some embodiments, the method for determining that a filter screen is dirty and clogged further includes:
when the actual filth blockage value is larger than or equal to the set filth blockage value, judging that the filter screen is filth-blocked; otherwise, the blockage is not dirty.
In some embodiments, the method for determining that a filter screen is dirty and clogged further includes:
and when the filter screen is judged to be dirty and blocked, carrying out dirty and blocked alarm.
In some embodiments, the method for determining that a filter screen is dirty and clogged further includes:
presetting a filth blockage early warning value which is smaller than the preset filth blockage value; comparing the actual filth blockage value with the filth blockage early warning value;
and when the actual filth blockage value is smaller than the set filth blockage value and is larger than or equal to the filth blockage early warning value, carrying out filth blockage early warning.
In some embodiments, the method for determining that a filter screen is dirty and clogged further includes:
presetting a shutdown filth blockage value which is greater than the set filth blockage value; comparing the actual filth blockage value with the shut-down filth blockage value;
and when the actual filth blockage value is larger than or equal to the operation stopping filth blockage value, controlling the air conditioner to stop operating and giving a filth blockage alarm.
In some embodiments, the method for determining that a filter screen is dirty and clogged further includes:
and when the actual filth blockage value is cleared, the filth blockage early warning or the filth blockage warning and controlling the air conditioner to stop running and remove.
An indoor unit of an air conditioner comprises a controller; the controller is provided with the method for judging filth blockage of the filter screen.
Compared with the prior art, the technical scheme of the invention has the following technical effects:
according to the filter screen filth blockage judging method and the air conditioner indoor unit, the standard filth blockage period of the filter screen is determined by setting a filth blockage value; setting a filth blockage coefficient according to the influence degree of various operation conditions on filth blockage of the filter screen; recording the continuous running time under various running conditions; calculating the sum of the products of the running time of each running condition and the dirty blockage coefficient of the corresponding running condition, namely an actual dirty blockage value; the actual filth blockage value calculated by the method considers the difference of the influence degrees of various different running conditions on the filter screen, and the actual filth blockage value is calculated by the product sum of the filth blockage coefficient and the running time, so that the filth blockage degree of the filter screen is more accurately measured; the dirty blockage coefficient is set by taking a set dirty blockage value as a standard condition, so that the actual dirty blockage value calculated by the method and the set dirty blockage value have a unified standard, and the judgment on whether dirty blockage exists is more accurate; the accurate measurement of the filth blockage degree of the filter screen and the accurate judgment of whether the filth blockage occurs enable the air conditioner to operate healthily, save the maintenance cost of the air conditioner and improve the user experience.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a flowchart of a method for determining filter clogging according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected unless otherwise explicitly stated or limited. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art. In the foregoing description of embodiments, the particular features, structures, materials, or characteristics may be combined in any suitable manner in any one or more embodiments or examples.
The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
Referring to fig. 1, the method for determining filth blockage of a filter screen according to the present invention includes presetting a preset filth blockage value of the filter screen, which is a filth blockage period in a set standard operating condition, that is, the filter screen becomes a filth blockage state by a length of time of the preset filth blockage value in the set standard operating condition. The set dirty blockage value is obtained by an experiment of operating an air conditioner or an air purifier under a set standard operating condition until the filter screen is dirty blocked.
The method for judging the filth blockage of the filter screen also comprises the steps of setting a plurality of operating conditions and filth blockage coefficients corresponding to the set operating conditions, and generating a corresponding table of the operating conditions and the filth blockage coefficients; the dirty blocking coefficient can be set according to the influence degree of each operation condition on the dirty blocking of the filter screen relative to the standard operation condition.
When the air conditioner runs, circularly acquiring the running conditions of the air conditioner, and timing the running time of different running conditions; and obtaining the dirty blockage coefficient corresponding to each operation condition through the corresponding table of the operation condition and the dirty blockage coefficient.
And circularly calculating the sum of the running time of each operating condition and the product of the dirty blockage coefficients corresponding to each operating condition, and defining the sum as an actual dirty blockage value.
And comparing the actual filth blockage value with the set filth blockage value, and judging the filth blockage condition of the filter screen.
The invention also discloses an air-conditioning indoor unit, which comprises a controller; the controller is provided with the method for judging the filth blockage of the filter screen.
The invention relates to a filter screen filth blockage judging method and an air conditioner indoor unit comprising a controller configured with the judging method, wherein a filth blockage period of a filter screen under a set standard operation condition is determined by setting a filth blockage value; setting a filth blockage coefficient according to the influence degree of various operation conditions on filth blockage of the filter screen relative to the set standard operation conditions; recording the running time of various running conditions; calculating an actual filth blockage value; the actual filth blockage value calculated by the method considers the influence degree of various different operating conditions on the standard filth blockage period, so that the filth blockage degree of the filter screen is more accurately measured; the dirty blockage coefficient is set by taking a set dirty blockage value as a standard, so that the actual dirty blockage value calculated by the method and the set dirty blockage value have a unified standard, and the judgment on whether dirty blockage exists is more accurate; the accurate measurement of the filth blockage degree of the filter screen and the more accurate filth blockage judgment enable the air conditioner indoor unit to run healthily, save the maintenance cost and improve the user experience.
The method for judging filth blockage of a filter screen and the specific principle and working method of the air-conditioning indoor unit of the present invention are described in detail below by specific embodiments.
In one embodiment, referring to FIG. 1, the operational condition setting includes two factors, namely, a pollution level and a fan speed level. The contamination level is defined as the concentration level of a particle of one diameter. For example, multiple pollution levels can be set by setting multiple sections of the concentration of PM10 particulate matter or the concentration of PM2.5 particulate matter or the concentration of PM1.0 particulate matter or the concentration of PM0.5 particulate matter, and the data of the particulate matter concentration can be acquired by an environmental particulate matter detection device arranged on an indoor unit of an air conditioner or arranged indoors, or a network resource can be acquired by a network device arranged on the indoor unit of the air conditioner or arranged indoors to determine the concentration of particulate matter with a certain local diameter.
Different combinations of the pollution grades and the fan rotating speed grades are specified as different operation conditions, and dirty blockage coefficients are set corresponding to the operation conditions; the filth blockage coefficient can be obtained by a filth blockage experiment under the corresponding operation condition.
The operation condition of the embodiment is defined by two factor pollution grades and fan rotating speed grades which are most closely related to filter screen filth blockage, so that the coverage range of the operation condition is increased, the accuracy of a filth blockage coefficient is improved, and the accuracy of an actual filth blockage value is improved.
Of course, the pollution level can be set according to the concentration of particulate matters with various diameters, so that the setting of the operation condition is more detailed, the coverage is wider, and the calculation of the actual filth blockage value is more accurate.
In some embodiments, referring to fig. 1, the method for determining that a filter screen is dirty and clogged further includes: and judging that the filter screen is dirty and blocked when the actual dirty and blocked value is greater than or equal to the set dirty and blocked value, and otherwise, judging that the filter screen is not dirty and blocked.
In addition, when the filter screen is judged to be dirty and blocked, a dirty and blocked alarm is carried out to remind a user to clean the filter screen or replace the filter screen.
Whether the filter screen is dirty or not is judged by specifically comparing the actual dirty blocking value with the set dirty blocking value, the filter screen is simple and convenient to use on the premise that the accuracy of the actual dirty blocking value is high, and the judgment efficiency is improved.
In addition, the filth blockage alarm can remind a user to clean or replace the filter screen, so that the user can be protected and navigated for health and the user experience is improved.
In some embodiments, referring to fig. 1, the method for determining that a filter screen is dirty and clogged further includes: presetting a filth blockage early warning value, and comparing the actual filth blockage value with the filth blockage early warning value; and the filth blockage early warning value is smaller than the set filth blockage value and is used for early warning the early stage of filth blockage of the filter screen.
And when the actual filth blockage value is greater than or equal to the filth blockage early warning value and less than the set filth blockage value, performing filth blockage early warning.
This embodiment is less than the stifled early warning value of the filth of settlement through setting up, carries out the early warning before the filth stifled filter screen, makes the user prepare in advance and arrange to wash the filter screen or change the filter screen, and overall arrangement time reduces the filter screen filth and blocks up harm and user experience that causes the health good.
In some embodiments, referring to fig. 1, the method for determining that a filter screen is dirty and clogged further includes: presetting a shutdown filth blockage value, and comparing the actual filth blockage value with the shutdown filth blockage value.
The operation stopping filth blockage value is larger than the set filth blockage value and is used for limiting the maximum filter screen filth blockage degree of the air conditioner in operation.
When the actual filth blockage value is larger than the operation stop filth blockage value, the air conditioner indoor unit is controlled to stop operating, and the harm to a human body caused by serious filth blockage of the filter screen is avoided.
In some embodiments, referring to fig. 1, the method for determining that a filter screen is dirty and clogged further includes:
when the actual filth blockage value is cleared, filth blockage early warning or filth blockage alarming or air conditioner stop operation control is removed.
The method for judging filth blockage of the filter screen comprises the steps of cleaning or replacing the filter screen when the filth blockage occurs; the cleaned and replaced filter screen is cleaned again, the filth blockage period of the cleaned and replaced filter screen needs to be recalculated, so that the actual filth blockage value needs to be cleared, the air conditioner with the replaced filter screen or the cleaned filter screen can normally operate, the actual filth blockage value is prevented from being measured disorderly after the filter screen is cleaned or slid, and the filth blockage control precision of the filter screen in the life cycle of the indoor unit of the air conditioner is improved.
In one embodiment, referring to fig. 1, an indoor unit of an air conditioner includes a controller; the controller is configured with control logic of the filter screen judging method, and specifically comprises the following procedures.
The controller is internally provided with a set filth blockage value corresponding to the filter screen, and/or a filth blockage early warning value, and/or a running stoppage filth blockage value, a plurality of running conditions and filth blockage coefficients corresponding to the running conditions.
When the air conditioner is operated, firstly, the concentration of the particulate matters with single diameter or multiple diameters and the rotating speed of the fan are obtained and determined, and the pollution level and the rotating speed level of the fan are determined according to the concentration of the particulate matters and the rotating speed of the fan, so that the operation condition is determined, and timing is started.
Then, the dirty blocking coefficient of the current operating condition is represented by the corresponding table of each operating condition and the dirty blocking coefficient.
Then, circularly acquiring and determining the concentration of the particulate matters with single diameter or multiple diameters and the rotating speed of the fan, determining the operation condition according to the concentration of the particulate matters and the rotating speed of the fan, and judging whether the operation condition changes relative to the previous operation condition; and if the change occurs, stopping timing, saving the timing time as the running time and starting new timing. And calculating the sum of the products of the running time of each currently stored running condition and the corresponding filth blockage coefficient, namely the actual filth blockage value.
Comparing the actual filth blockage value obtained by calculation with a filth blockage early warning value, and if the actual filth blockage value is greater than or equal to the filth blockage early warning value, comparing the actual filth blockage value with a set filth blockage value; and if the actual filth blockage value is smaller than the filth blockage early warning value, returning to the process of circularly obtaining and determining the concentration of the particulate matters with single diameter or multiple diameters and the rotating speed of the fan.
And comparing the actual filth blockage value with the set filth blockage value, and when the actual filth blockage value is greater than the filth blockage early warning value and less than the set filth blockage value, performing filth blockage early warning to remind a user that the filter screen is about to be filth blocked, and preparing for cleaning or replacing the filter screen in time. And when the actual filth blockage value is larger than or equal to the set filth blockage value, performing filth blockage alarm and comparing the actual filth blockage value with the operation stopping filth blockage value.
And comparing the actual filth blockage value with the operation stopping filth blockage value, controlling the indoor unit of the air conditioner to stop operating when the actual filth blockage value is greater than or equal to the operation stopping filth blockage value, and keeping filth blockage alarm.
When the filth blockage early warning or the filth blockage alarming or the operation stop of the indoor unit of the air conditioner and the filth blockage alarming occur, if the filter screen is cleaned or replaced, the filth blockage early warning or the filth blockage alarming or the operation stop is removed, and the indoor unit of the air conditioner operates normally.
The early warning of filth blockage, the alarming of filth blockage and the removal of the shutdown can be realized by resetting the actual filth blockage value by the configuration controller.
In the foregoing description of embodiments, the particular features, structures, materials, or characteristics may be combined in any suitable manner in any one or more embodiments or examples.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. A method for judging filth blockage of a filter screen is characterized by comprising the following steps:
presetting a set filth blockage value of the filter screen, wherein the set filth blockage value is a filth blockage period of the filter screen under a standard operation condition;
presetting various operation conditions and filth blockage coefficients thereof; the filth blockage coefficient is determined according to the filth blockage influence degree of each operating condition on the filter screen;
recording the operation time of each operation condition; calculating the sum of the products of the running time of each operating condition and the dirty blockage coefficient corresponding to the operating condition, and defining the sum as an actual dirty blockage value;
and comparing the actual filth blockage value with the set filth blockage value, and judging whether filth blockage exists.
2. A method for determining clogging of a filter screen according to claim 1,
the operating conditions include two factors, respectively: pollution grade and fan rotating speed grade;
presetting a plurality of pollution levels and a plurality of fan rotating speed levels;
different combinations of each of the pollution levels and each of the fan speed levels define different ones of the operating conditions.
3. A method for determining clogging of a filter screen according to claim 2,
each of the contamination levels is set according to a concentration range of one or more diameters of particulate matter.
4. A method for determining clogging of a filter screen according to claim 3, further comprising:
circularly acquiring the concentration of one or more diameters of particulate matters in the environment and the rotating speed of a fan, and determining the current pollution level and the current rotating speed level of the fan so as to determine the current operating condition;
judging whether the current operating condition is the same as the previous operating condition or not;
when the current operating condition is different from the previous operating condition, the current actual filth value is calculated.
5. A method for judging filter screen filth blockage according to any one of claims 1 to 4, further comprising:
when the actual filth blockage value is larger than or equal to the set filth blockage value, judging that the filter screen is filth-blocked; otherwise, the blockage is not dirty.
6. The method for determining filter screen filth blockage according to claim 5, further comprising:
and when the filter screen is judged to be dirty and blocked, carrying out dirty and blocked alarm.
7. A method for determining clogging of a filter screen according to claim 6, further comprising:
presetting a filth blockage early warning value which is smaller than the preset filth blockage value; comparing the actual filth blockage value with the filth blockage early warning value;
and when the actual filth blockage value is smaller than the set filth blockage value and is larger than or equal to the filth blockage early warning value, carrying out filth blockage early warning.
8. A method for determining clogging of a filter screen according to claim 7, further comprising:
presetting a shutdown filth blockage value which is greater than the set filth blockage value; comparing the actual filth blockage value with the shut-down filth blockage value;
and when the actual filth blockage value is larger than or equal to the operation stopping filth blockage value, controlling the air conditioner to stop operating and giving a filth blockage alarm.
9. A method for determining clogging of a filter screen according to claim 8, further comprising:
and when the actual filth blockage value is cleared, the filth blockage early warning or the filth blockage warning and controlling the air conditioner to stop running and remove.
10. An indoor unit of an air conditioner, comprising a controller provided with the method for determining clogging of a filter screen according to any one of claims 1 to 9.
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| CN115751608A (en) * | 2022-11-11 | 2023-03-07 | 宁波奥克斯电气股份有限公司 | Filth blockage detection method and device for air conditioner indoor unit and air conditioner |
| CN115875799A (en) * | 2022-12-21 | 2023-03-31 | 宁波奥克斯电气股份有限公司 | Air conditioner filter screen filth blockage degree detection method and device and readable storage medium |
| CN115950048A (en) * | 2022-12-23 | 2023-04-11 | 宁波奥克斯电气股份有限公司 | Air conditioner filter screen filth blockage degree detection method and device and readable storage medium |
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