CN115751608A - Filth blockage detection method and device for air conditioner indoor unit and air conditioner - Google Patents
Filth blockage detection method and device for air conditioner indoor unit and air conditioner Download PDFInfo
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Abstract
The invention discloses a filth blockage detection method and device for an air conditioner indoor unit and an air conditioner, and relates to the technical field of air conditioners, wherein the method comprises the following steps: acquiring the diameter of the particulate matter of the air at the air inlet of the indoor unit detected after the air conditioner is started every time and the running time of the air conditioner started every time; determining the equivalent accumulated running time of the air conditioner based on the particle diameter and the starting-up time; detecting the air quantity attenuation rate and the particulate matter concentration attenuation rate between the outer side and the inner side of a filter screen at an air inlet of an indoor unit; judging whether the equivalent accumulated operation time length, the air volume attenuation rate and the particulate matter concentration attenuation rate are all in a preset filth blockage interval, and if so, determining that a filter screen at an air inlet of the indoor unit is filth-blocked. The filth blockage judging mode provided by the invention can reflect the real filth blockage situation of the filter screen, and improves the accuracy and rationality of filth blockage judgment.
Description
Technical Field
The invention relates to the technical field of air conditioners, in particular to a filth blockage detection method and device for an air conditioner indoor unit and an air conditioner.
Background
The indoor unit of the air conditioner is usually provided with a filter screen, and in the running process of the air conditioner, the filter screen and the evaporator of the indoor unit are easy to be dirty and blocked, so that the air intake of the air conditioner is reduced, and then the problems of condensation, water dripping and the like are easy to occur, therefore, whether the dirty and blocked judgment of the filter screen of the indoor unit is necessary or not is judged. The existing filth blockage judging technology generally judges whether a filter screen needs to be cleaned based on the accumulated running time of an air conditioner, but the accumulated running time cannot reflect the real filth blockage situation of the filter screen, so that the filth blockage judging accuracy of an air conditioner internal unit is low.
Disclosure of Invention
In order to solve the problems, the invention provides a filth blockage detection method and device for an air conditioner internal unit and an air conditioner, which take the influence of indoor air quality on filth blockage of a filter screen when the air conditioner is stopped into consideration and improve the accuracy and rationality of filth blockage judgment.
According to an embodiment of the present invention, on the one hand, a filth blockage detection method for an air conditioner indoor unit is provided, which includes: acquiring the diameter of the particulate matter of the air at the air inlet of the indoor unit detected after the air conditioner is started every time and the running time of the air conditioner started every time; determining an equivalent cumulative operating time of the air conditioner based on the particle diameter and the starting-up time; detecting the air quantity attenuation rate and the particulate matter concentration attenuation rate between the outer side and the inner side of the filter screen at the air inlet of the indoor unit; and judging whether the equivalent accumulated operation time length, the air volume attenuation rate and the particulate matter concentration attenuation rate are all in a preset filth blockage interval, and if so, determining that a filter screen at an air inlet of the indoor unit is filth-blocked.
By adopting the technical scheme, the equivalent accumulated operation time of the air conditioner is determined according to the particle diameter of the air at the air inlet detected after the air conditioner is started at every time, the influence of indoor air quality on the filthy blockage of the filter screen when the air conditioner is stopped is fully considered, the real filthy blockage condition of the filter screen can be indirectly reflected, the filthy blockage of the filter screen is determined when the equivalent accumulated operation time, the air volume attenuation rate and the particle concentration attenuation rate of the air conditioner simultaneously meet the preset filthy blockage interval, and the accuracy and the rationality of filthy blockage judgment are improved.
Preferably, the step of determining an equivalent cumulative operating time period of the air conditioner based on the particle diameter and the on-time period includes: determining a corresponding time correction coefficient based on the diameter of the particulate matter detected after each startup; wherein the time correction factor is positively correlated with the particulate matter diameter; calculating the equivalent accumulated running time length based on the starting running time length and the time correction coefficient; wherein, the calculation formula of the equivalent accumulated running time length is as follows: t = T 1 *t 1 +T 2 *t 2 +…+T n *t n T is the equivalent accumulated running time length T n The time length of the startup operation for the nth startup n And a time correction coefficient corresponding to the particle diameter of the air at the air inlet after the nth startup, wherein n is the current accumulated startup time.
By adopting the technical scheme, the equivalent accumulated running time length is determined according to the accumulated value of the product of the starting time length at each time and the time correction coefficient corresponding to the particle diameter of the air at the air inlet when the air conditioner is started, and the larger the particle diameter is, the larger the corresponding time correction coefficient is, the influence of the air quality of the air conditioner in the shutdown time on the filth blockage of the filter screen is considered, and the rationality of judging the filth blockage of the filter screen is improved.
Preferably, the step of determining the corresponding time correction factor based on the diameter of the particulate matter detected after each power-on includes: if the diameter of the particulate matter detected after starting up is smaller than or equal to a first preset PM value, determining a time correction coefficient corresponding to the diameter of the particulate matter as a first coefficient; if the diameter of the particulate matter detected after starting is larger than the first preset PM value and smaller than or equal to a second preset PM value, determining a time correction coefficient corresponding to the diameter of the particulate matter as a second coefficient; if the diameter of the particulate matter detected after the startup is larger than the second preset PM value and smaller than or equal to a third preset PM value, determining a time correction coefficient corresponding to the diameter of the particulate matter as a third coefficient; wherein the first coefficient < the second coefficient < the third coefficient.
By adopting the technical scheme, the time correction coefficient corresponding to the particle diameter is determined according to the detected interval of the particle diameter after the machine is started every time, and the larger the particle diameter is, the larger the time correction coefficient corresponding to the particle diameter is, the influence of the particle diameter on the equivalent accumulated running time length is considered, and the accuracy of determining the equivalent accumulated running time length is improved.
Preferably, the lateral surface and the medial surface of filter screen all are provided with the amount of wind inductor, detect the step of the amount of wind decay rate between the outside and the inboard of the filter screen of indoor set air intake department includes: detecting the outside air quantity and the inside air quantity of a filter screen at an air inlet of the indoor unit based on an air quantity sensor, and calculating the air quantity attenuation rate based on the outside air quantity and the inside air quantity; wherein the calculation formula of the air volume attenuation rate is Δ V = (V1-V2)/V1, Δ V is the air volume attenuation rate, V1 is the outside air volume, and V2 is the inside air volume.
By adopting the technical scheme, the air quantity sensors are arranged on the outer side surface and the inner side surface of the filter screen, so that the air quantity change conditions inside and outside the air inlet of the indoor unit can be accurately detected, and the detection accuracy of the air quantity attenuation rate is improved.
Preferably, the lateral surface and the medial surface of filter screen all are provided with the particulate matter concentration inductor, detect the particulate matter concentration decay rate's between the outside and the inboard of the filter screen of indoor set air intake department step includes: detecting the concentration of outside particles and the concentration of inside particles of a filter screen at an air inlet of the indoor unit based on the particle concentration sensor, and calculating the particle concentration attenuation rate based on the concentration of the outside particles and the concentration of the inside particles; wherein the calculation formula of the particle concentration attenuation rate is Δ C = (C1-C2)/C1, Δ C is the particle concentration attenuation rate, C1 is the outside particle concentration, and C2 is the inside particle concentration.
By adopting the technical scheme, the particulate matter concentration sensor is arranged on the outer side face and the inner side face of the filter screen, the change condition of the particulate matter concentration inside and outside the air inlet of the indoor unit can be accurately detected, and the accuracy of detecting the attenuation rate of the particulate matter concentration is improved.
Preferably, the step of judging whether the equivalent accumulated operating time, the air volume attenuation rate and the particulate matter concentration attenuation rate are all in a preset filth blockage interval, and if yes, determining that filth blockage occurs on a filter screen at an air inlet of the indoor unit comprises the following steps: judging whether the equivalent accumulated operation time length, the air volume attenuation rate and the particulate matter concentration attenuation rate simultaneously satisfy T & gtT Is provided with 、△V＞V Is provided with And Δ C > C Is provided with If yes, determining that a filter screen at an air inlet of the indoor unit is dirty and blocked; wherein T is the equivalent accumulated running time length, T Is provided with Is a preset time length threshold value, and Delta V is the air volume attenuation rate and V Is provided with Is a preset air quantity attenuation threshold value, and Delta C is the attenuation rate of the concentration of the particulate matter C Is provided with A preset concentration decay threshold.
By adopting the technical scheme, T is more than T Is provided with 、△V＞V Is provided with And Δ C > C Is provided with The filter screen is determined to be dirty and blocked, the real situation that the single parameter cannot accurately reflect the dirty and blocked filter screen can be avoided, and the accuracy of judging the dirty and blocked filter screen is improved.
Preferably, the filth blockage detection method for the air conditioner indoor unit further includes: when the filter screen at the air inlet of the indoor unit is determined to be dirty and blocked, sending a dirty and blocked prompt; and when the filter screen at the air inlet of the indoor unit is cleaned, controlling the accumulated starting-up times and the equivalent accumulated running time length to be reset.
By adopting the technical scheme, the filth blockage reminding device sends out a filth blockage reminding when the filter screen is filth blocked so as to remind a user to clean the filter screen in time, so that the normal operation of the air conditioner is prevented from being influenced, and the next filth blockage judgment is started by resetting the accumulated starting times and the equivalent accumulated operation time after the filter screen is cleaned so as to realize the regular reminding of the user to clean the filter screen.
According to an embodiment of the present invention, there is provided a humidification control device of an air conditioner, including: the acquisition module is used for acquiring the diameter of the particulate matters of the air at the air inlet of the indoor unit detected after the air conditioner is started up every time and the running time of the air conditioner started up every time; the determining module is used for determining the equivalent accumulated running time of the air conditioner based on the particle diameter and the starting-up time; the detection module is used for detecting the air quantity attenuation rate and the particulate matter concentration attenuation rate between the outer side and the inner side of the filter screen at the air inlet of the indoor unit; and the judging module is used for judging whether the equivalent accumulated running time length, the air volume attenuation rate and the particulate matter concentration attenuation rate are all in a preset filth blockage interval, and if so, determining that a filter screen at an air inlet of the indoor unit is filth blocked.
According to an embodiment of the present invention, in another aspect, an air conditioner is provided, which includes an indoor unit, and a computer-readable storage medium and a processor storing a computer program, where an air volume sensor and a particulate matter concentration sensor are respectively disposed on an outer side surface and an inner side surface of a filter screen at an air inlet of the indoor unit, and when the computer program is read and executed by the processor, the method according to any one of the first aspect is implemented.
According to an embodiment of the present invention, in another aspect, a computer-readable storage medium is provided, which stores a computer program, which when read and executed by a processor, implements the method according to any one of the first aspect.
The invention has the following beneficial effects: the equivalent accumulated operation time of the air conditioner is determined according to the particle diameter of the air at the air inlet detected after the air conditioner is started up every time, the influence of indoor air quality on filth blockage of the filter screen when the air conditioner is stopped is fully considered, the real filth blockage situation of the filter screen can be indirectly reflected, and filth blockage of the filter screen is determined when the equivalent accumulated operation time, the air volume attenuation rate and the particle concentration attenuation rate of the air conditioner simultaneously meet the preset filth blockage interval, so that the accuracy and the rationality of filth blockage judgment are improved.
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In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It should be apparent that the drawings in the following description are merely exemplary, and that other embodiments can be derived from the drawings provided by those of ordinary skill in the art without inventive effort.
The structures, ratios, sizes, and the like shown in the present specification are only used for matching with the contents disclosed in the specification, so as to be understood and read by those skilled in the art, and are not used to limit the conditions that the present invention can be implemented, so that the present invention has no technical significance, and any structural modifications, changes in the ratio relationship, or adjustments of the sizes, without affecting the effects and the achievable by the present invention, should still fall within the range that the technical contents disclosed in the present invention can cover.
Fig. 1 is a flow chart of a filth blockage detection method for an air conditioner indoor unit provided by the invention;
FIG. 2 is a front view of an air conditioner according to the present invention;
FIG. 3 is a schematic diagram of an internal structure of an air conditioner according to the present invention;
fig. 4 is a schematic structural diagram of a filth blockage detection device of an air conditioner indoor unit provided by the invention.
Detailed Description
The present invention is described in terms of particular embodiments, other advantages and features of the invention will become apparent to those skilled in the art from the following disclosure, and it is to be understood that the described embodiments are merely exemplary of the invention and that it is not intended to limit the invention to the particular embodiments disclosed. 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 order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.
The embodiment provides a filth blockage detection method for an air conditioner indoor unit, which can be applied to an air conditioner, and as shown in a flow chart of the filth blockage detection method for the air conditioner indoor unit shown in fig. 1, the method mainly includes the following steps S102 to S108:
step S102: and acquiring the diameter of the particulate matter of the air at the air inlet of the indoor unit detected after the air conditioner is started every time and the running time of the air conditioner started every time.
Referring to the front view of the air conditioner shown in fig. 2 and the schematic diagram of the internal structure of the air conditioner shown in fig. 3, as shown in fig. 2, an air volume sensor and a particulate matter concentration sensor are disposed on the outer side 20 of the filter screen at the air inlet of the indoor unit of the air conditioner (i.e., the air inlet outside the air conditioner), and as shown in fig. 3, an air volume sensor and a particulate matter concentration sensor are disposed on the inner side 30 of the filter screen at the air inlet of the indoor unit of the air conditioner (i.e., the inside of the air conditioner and the back of the filter screen).
After the air conditioner is started every time, the current air particulate diameter P (namely a PM (particulate matter) value) at the air inlet of the indoor unit is detected based on the particulate matter concentration sensor on the outer side of the filter screen, the starting time of the air conditioner every time is recorded based on the timer, and the timer is controlled to be reset and store the current particulate matter diameter P and the starting time when the air conditioner is shut down.
Step S104: and determining the equivalent accumulated running time of the air conditioner based on the particle diameter and the starting-up time.
The inventor researches and discovers that the air conditioner can aggravate filth blockage due to more dust in poor indoor environment quality after being shut down, the accumulated running time cannot reflect the real filth blockage condition of the filter screen, the air quality at the air inlet of the indoor unit before starting can be indirectly reflected by detecting the diameter of air particles at the air inlet of the indoor unit when starting, and the diameter of the particles around the filter screen at the air inlet can be larger due to poor air quality at the air inlet of the indoor unit before starting. Accumulating the starting-up time length when the particle diameter is larger, or multiplying the starting-up time length when the particle diameter is larger by a larger coefficient, and accumulating the products of the starting-up time length and the coefficient each time to obtain the equivalent accumulated running time length of the air conditioner.
Step S106: and detecting the air quantity attenuation rate and the particulate matter concentration attenuation rate between the outer side and the inner side of the filter screen at the air inlet of the indoor unit.
Detecting the air quantity inside and outside the filter screen in real time based on an air quantity sensor outside the filter screen at the air inlet of the indoor unit and an air quantity sensor inside the filter screen, and calculating the air quantity attenuation rate between the inside and the outside of the air inlet (namely between the inside and the outside of the air conditioner); based on a filter screen outer side particulate matter concentration sensor at an air inlet of the indoor unit and a filter screen inner side particulate matter concentration sensor, the particulate matter concentrations of the inner side and the outer side of the filter screen are detected in real time, and the particulate matter concentration attenuation rate between the inside and the outside of the air inlet is calculated.
Step S108: and judging whether the equivalent accumulated operation time, the air volume attenuation rate and the particulate matter concentration attenuation rate are all in a preset filth blockage interval, and if so, determining that the filth blockage occurs on the filter screen at the air inlet of the indoor unit.
The preset filth blockage interval comprises a filth blockage value range corresponding to equivalent accumulated running time after the filth blockage is generated by the filter screen, a filth blockage value range corresponding to the air volume attenuation rate and a filth blockage value range corresponding to the particulate matter concentration attenuation rate, and the filth blockage judgment accuracy is improved by determining that the filth blockage occurs to the filter screen when the equivalent accumulated running time, the air volume attenuation rate and the particulate matter concentration attenuation rate simultaneously meet the preset filth blockage interval.
According to the filth blockage detection method for the air conditioner internal unit, the equivalent accumulated running time of the air conditioner is determined according to the particle diameter of the air at the air inlet detected after the air conditioner is started every time, the influence of indoor air quality on filth blockage of the filter screen when the air conditioner is stopped is fully considered, the real filth blockage condition of the filter screen can be indirectly reflected, and the filth blockage of the filter screen is determined when the equivalent accumulated running time, the air volume attenuation rate and the particle concentration attenuation rate of the air conditioner simultaneously meet the preset filth blockage interval, so that the accuracy and the rationality of filth blockage judgment are improved.
In one embodiment, in order to accurately calculate the equivalent cumulative operating time period of the air conditioner, the embodiment provides an implementation manner for determining the equivalent cumulative operating time period of the air conditioner based on the particle diameter and the startup time period, which may be specifically performed with reference to the following steps (1) to (2):
step (1): the corresponding time correction factor is determined based on the particle diameter detected after each power-on.
The time correction coefficient is in positive correlation with the diameter of the particles, and the value range of the time correction coefficient is 0-1. The larger the particle diameter is, the larger the influence of the air quality of the air conditioner before the air conditioner is started on the filth blockage of the filter screen is, and the time correction coefficient of the starting time is set to be a larger value so as to enhance the influence of the particle diameter on the starting operation time when the air quality is poor.
In a specific embodiment, if the diameter of the particulate matter detected after startup is less than or equal to a first preset PM value P1, determining a time correction coefficient corresponding to the diameter of the particulate matter as a first coefficient; the first coefficient may have a value in the range of 0.1 to 0.3.
If the diameter of the particulate matter detected after starting the machine is larger than the first preset PM value P1 and smaller than or equal to a second preset PM value P2, determining a time correction coefficient corresponding to the diameter of the particulate matter as a second coefficient; the second coefficient may have a value in the range of 0.4 to 0.6.
If the diameter of the particulate matter detected after the startup is larger than the second preset PM value P2 and smaller than or equal to a third preset PM value P3, determining a time correction coefficient corresponding to the diameter of the particulate matter as a third coefficient; the third coefficient may have a value in the range of 0.7 to 0.9. Wherein the first coefficient < the second coefficient < the third coefficient.
The inventor has found that the longer the cumulative operating time of the air conditioner is, the more serious the filth blockage is, and if the air conditioner is stored in poor air quality for a long time and is not used frequently, the filth blockage is easy to occur. According to the embodiment, the time correction coefficient corresponding to the particle diameter is determined according to the interval where the particle diameter is detected after each startup, and the larger the particle diameter is, the larger the time correction coefficient corresponding to the particle diameter is, the influence of the particle diameter on the equivalent accumulated operation time length is considered, and the accuracy of determining the equivalent accumulated operation time length is improved.
Step (2): and calculating the equivalent accumulated running time length based on the starting running time length and the time correction coefficient.
The calculation formula of the equivalent accumulated running time is as follows: t = T 1 *t 1 +T 2 *t 2 +…+T n *t n T is the equivalent cumulative operating time length, T 1 The starting-up running time length t for the 1 st starting-up 1 Time correction factor corresponding to the particle diameter of air at the air inlet after 1 st start-up, and, correspondingly, T n The starting-up running time length t for the nth starting-up n And a time correction coefficient corresponding to the particle diameter of the air at the air inlet after the nth startup, wherein n is the current accumulated startup times.
The equivalent accumulated operation duration is determined through the accumulated value of the product of the time correction coefficient corresponding to the particle diameter of the air at the air inlet when the air conditioner is started up according to the starting-up duration at each time, compared with the simple timing of the accumulated operation duration of the air conditioner in the prior art, the filth blockage influence of the air quality of the air conditioner during the shutdown time on the filter screen is considered, and the rationality of filth blockage judgment of the filter screen is improved.
In an embodiment, the present embodiment provides a specific implementation manner of detecting an air volume attenuation rate between an outer side and an inner side of a filter screen at an air inlet of an indoor unit:
detecting the outside air quantity and the inside air quantity of a filter screen at an air inlet of the indoor unit based on an air quantity sensor, and calculating an air quantity attenuation rate based on the outside air quantity and the inside air quantity; wherein, the calculation formula of the air volume attenuation rate is Δ V = (V1-V2)/V1, Δ V is the air volume attenuation rate, V1 is the outside air volume, and V2 is the inside air volume.
In a specific embodiment, in order to avoid that the air volume attenuation rate takes a negative value, the air volume attenuation rate may be: Δ V = | (V1-V2)/V1 |.
The air quantity sensors are arranged on the outer side face and the inner side face of the filter screen, so that the air quantity change conditions inside and outside the air inlet of the indoor unit can be accurately detected, and the detection accuracy of the air quantity attenuation rate is improved.
In one embodiment, the present embodiment provides a specific implementation manner of detecting the attenuation rate of the particulate matter concentration between the outside and the inside of the filter screen at the air inlet of the indoor unit:
detecting the concentration of outside particles and the concentration of inside particles of a filter screen at an air inlet of an indoor unit based on a particle concentration sensor, and calculating the particle concentration attenuation rate based on the concentration of the outside particles and the concentration of the inside particles; the calculation formula of the particle concentration attenuation rate is Δ C = (C1-C2)/C1, Δ C is the particle concentration attenuation rate, C1 is the outside particle concentration, and C2 is the inside particle concentration.
In a specific embodiment, in order to avoid that the particle concentration decay rate takes a negative value, the particle concentration decay rate may be: Δ C = | (C1-C2)/C1 |.
The particle concentration sensors are arranged on the outer side face and the inner side face of the filter screen, so that the change condition of the particle concentration inside and outside the air inlet of the indoor unit can be accurately detected, and the detection accuracy of the particle concentration attenuation rate is improved.
In an embodiment, the present embodiment provides a specific implementation method for determining whether a filter screen at an air inlet of an indoor unit is dirty or not: judging whether the equivalent accumulated operation time length, the air quantity attenuation rate and the particulate matter concentration attenuation rate simultaneously satisfy T & gt T Is provided with 、△V＞V Is provided with And Δ C > C Is provided with If yes, determining that the filter screen at the air inlet of the indoor unit is dirty and blocked; wherein T is equivalent accumulated running time length, T Is provided with Is a preset time length threshold value, and delta V is an air volume attenuation rate, V Is provided with The wind quantity attenuation threshold is preset, the Delta C is the attenuation rate of the concentration of the particulate matter, C Is provided with Is a preset concentration decay threshold.
If the equivalent accumulated operation time length, the air quantity attenuation rate and the particulate matter concentration attenuation rate simultaneously satisfy T & gtT Is provided with 、△V＞V Is provided with And Δ C > C Is provided with Determining that the filter screen needs to be cleaned in time when dirty and blockage occurs; by satisfying T > T at the same time Is provided with 、△V＞V Is provided with And Δ C > C Is provided with The filter screen is determined to be dirty and blocked, the real situation that the single parameter cannot accurately reflect the dirty and blocked filter screen can be avoided, and the judgment of the dirty and blocked filter screen is improvedThe accuracy of (3).
In an embodiment, the method for detecting filth blockage of an air conditioner indoor unit according to this embodiment further includes: when the filter screen at the air inlet of the indoor unit is determined to be dirty and blocked, a dirty and blocked prompt is sent out; and after the filter screen at the air inlet of the indoor unit is cleaned, controlling the accumulated starting times and the equivalent accumulated running time length to be reset.
The filth blockage reminding can comprise any one or more of sound reminding, light reminding and display reminding, the filth blockage reminding is sent when the filter screen is filth blocked so as to remind a user to clean the filter screen in time, the influence on the normal operation of the air conditioner is avoided, and the accumulated starting time and the equivalent accumulated operation time are reset after the filter screen is cleaned so as to start the next filth blockage judgment and regularly remind the user to clean the filter screen.
According to the filth blockage detection method for the air conditioner indoor unit, whether the air conditioner indoor unit is filth blocked or not is sensed through detecting the concentrations of the particles on the inner side and the outer side of the filter screen, the concentration difference of the particles, the air volume difference between the inner side and the outer side of the filter screen and the equivalent accumulated running time of the air conditioner, so that a user is reminded to clean the indoor unit regularly.
Corresponding to the filth blockage detection method for the air conditioner indoor unit provided by the embodiment, the embodiment of the invention provides an example of detecting filth blockage of the air conditioner indoor unit by applying the filth blockage detection method for the air conditioner indoor unit, and the method can be specifically executed by referring to the following steps:
step 1, an air quantity sensor and a particulate matter concentration sensor are arranged at the air inlet and on the back of the filter screen (namely the outer side and the inner side of the filter screen) and used for detecting the air quantity and the particulate matter concentration of the outer side and the inner side of the filter screen.
And 2, after the air conditioner is started to operate every time, detecting the diameter P of the indoor current air particulate matter based on a particulate matter concentration sensor at the air inlet, acquiring a first preset PM value P1, a second preset PM value P2 and a third preset PM value P3, wherein P1 is more than P2 and less than P3, recording the starting time of the time, and calculating the equivalent accumulated operation time T of the air conditioner.
And determining the starting time length or the time correction coefficient corresponding to the air particulate matter diameter P according to the air particulate matter diameter P detected by starting each time.
When P is less than or equal to P1, determining the time correction coefficient as a first coefficient of 0.1-0.3;
when P1 is more than P and less than or equal to P2, determining the time correction coefficient as a second coefficient of 0.4-0.6;
and when P2 is more than P and less than or equal to P3, determining the time correction coefficient to be 0.7-0.9 of the third coefficient.
Calculating equivalent cumulative operation time T = T 1 *t 1 +T 2 *t 2 +…+T n *t n T is the equivalent cumulative operating time length, T n The starting-up running time length t for the nth starting-up n And a time correction coefficient corresponding to the particle diameter of the air at the air inlet after the nth startup, wherein n is the current accumulated startup time.
After the filter screen is cleaned, the equivalent accumulated running time T is cleared, and the other conditions T cannot be cleared.
And 3, detecting the air quantity at the air inlet and the back of the filter screen, and recording the air quantity as V1 and V2 respectively. Calculating the air volume attenuation rate delta V = (V1-V2)/V1.
And 4, detecting the concentrations of the particles at the air inlet and the back of the filter screen, and recording the concentrations as C1 and C2 respectively. The concentration decay rate Δ C = (C1-C2)/C1 was calculated.
Step 5, setting a filth blockage judgment parameter of the air conditioner filter screen, and presetting a time length threshold value T Is provided with (namely the time length which can cause the filter screen to generate filth blockage), and presetting an air volume attenuation threshold value V Is provided with (namely the air volume attenuation rate when the filter screen is dirty and blocked) and the preset concentration attenuation threshold C Is provided with (i.e., the concentration decay rate when the filter screen is clogged). And judging that the filter screen of the air conditioner is dirty and blocked when all conditions are met.
①T＞T Is provided with
②△V＞V Is provided with
③△C＞C Is provided with 。
Corresponding to the filth blockage detection method for the air conditioner indoor unit provided by the embodiment, the embodiment of the invention provides a filth blockage detection device for the air conditioner indoor unit, which can be applied to an air conditioner, and the device is shown in a structural schematic diagram of the filth blockage detection device for the air conditioner indoor unit shown in fig. 4 and comprises the following modules:
the obtaining module 41 is configured to obtain a diameter of a particulate matter of air at an air inlet of an indoor unit detected after the air conditioner is started up each time and a time length of each startup operation.
And the determining module 42 is used for determining the equivalent accumulated running time of the air conditioner based on the particle diameter and the starting-up time.
And the detection module 43 is used for detecting the air quantity attenuation rate and the particulate matter concentration attenuation rate between the outer side and the inner side of the filter screen at the air inlet of the indoor unit.
And the judging module 44 is used for judging whether the equivalent accumulated operation time length, the air volume attenuation rate and the particulate matter concentration attenuation rate are all in a preset filth blockage interval, and if so, determining that a filter screen at an air inlet of the indoor unit is filth-blocked.
The dirty stifled detection device of air conditioner internal unit that this embodiment provided, through the particulate matter diameter according to the air of air inlet department air that detects after the air conditioner is started up at every turn, the equivalent accumulative running duration of air conditioner, fully considered the influence that the indoor air quality was dirty stifled to the filter screen when the air conditioner shut down, can indirectly reflect the real dirty stifled condition of filter screen, through the equivalent accumulative running duration, the amount of wind decay rate and the particulate matter concentration decay rate at the air conditioner confirm that the filter screen takes place dirty stifled when satisfying preset dirty stifled interval simultaneously, the rate of accuracy and the rationality of dirty stifled judgement have been promoted.
In one embodiment, the determining module 42 is configured to determine a corresponding time correction factor based on the diameter of the particulate matter detected after each power-on; wherein the time correction factor is positively correlated with the particle diameter; calculating equivalent accumulated running time length based on the starting running time length and the time correction coefficient; the calculation formula of the equivalent accumulated running time is as follows: t = T 1 *t 1 +T 2 *t 2 +…+T n *t n T is the equivalent cumulative operating time length, T n The time length of the startup operation for the nth startup n And a time correction coefficient corresponding to the particle diameter of the air at the air inlet after the nth startup, wherein n is the current accumulated startup time.
In one embodiment, the determining module 42 is configured to determine the time correction coefficient corresponding to the particulate matter diameter as a first coefficient if the detected particulate matter diameter after startup is smaller than or equal to a first preset PM value; if the diameter of the particulate matter detected after starting is larger than the first preset PM value and smaller than or equal to the second preset PM value, determining a time correction coefficient corresponding to the diameter of the particulate matter as a second coefficient; if the diameter of the particulate matter detected after the startup is larger than the second preset PM value and smaller than or equal to a third preset PM value, determining a time correction coefficient corresponding to the diameter of the particulate matter as a third coefficient; wherein the first coefficient < the second coefficient < the third coefficient.
In one embodiment, the detecting module 43 is configured to detect an outside air volume and an inside air volume of a filter screen at an air inlet of an indoor unit based on an air volume sensor, and calculate an air volume attenuation rate based on the outside air volume and the inside air volume; wherein, the calculation formula of the air volume attenuation rate is Δ V = (V1-V2)/V1, Δ V is the air volume attenuation rate, V1 is the outside air volume, and V2 is the inside air volume.
In one embodiment, the detecting module 43 is configured to detect an outside particulate matter concentration and an inside particulate matter concentration of a filter screen at an air inlet of the indoor unit based on the particulate matter concentration sensor, and calculate a particulate matter concentration attenuation rate based on the outside particulate matter concentration and the inside particulate matter concentration; the calculation formula of the particle concentration attenuation rate is Δ C = (C1-C2)/C1, Δ C is the particle concentration attenuation rate, C1 is the outside particle concentration, and C2 is the inside particle concentration.
In one embodiment, the determining module 44 is configured to determine whether the equivalent accumulated operating time, the air volume attenuation rate and the particulate matter concentration attenuation rate satisfy T > T simultaneously Is provided with 、△V＞V Is provided with And Δ C > C Is provided with If yes, determining that a filter screen at an air inlet of the indoor unit is dirty and blocked; wherein T is equivalent accumulated running time length, T Is provided with Is a preset time length threshold value, and delta V is an air volume attenuation rate, V Is provided with The air quantity attenuation threshold is preset, and deltaC is the attenuation rate of particulate matter concentration, C Is provided with Is a preset concentration decay threshold.
In one embodiment, the apparatus further comprises:
the reminding module is used for sending out a filth blockage reminding when a filth blockage of a filter screen at an air inlet of the indoor unit is determined;
and the zero clearing module is used for controlling zero clearing of the accumulated starting times and the equivalent accumulated running time after the filter screen at the air inlet of the indoor unit is cleaned.
According to the filth blockage detection device for the air conditioner indoor unit, whether the air conditioner indoor unit is filth blocked or not is sensed through detecting the particle concentration on the inner side and the outer side of the filter screen, the particle concentration difference, the air volume difference between the inner side and the outer side of the filter screen and the equivalent accumulated running time of the air conditioner, so that a user is reminded of cleaning the indoor unit regularly.
Corresponding to the filth blockage detection method for the air conditioner indoor unit provided by the embodiment, the embodiment provides an air conditioner which comprises an indoor unit, a computer readable storage medium and a processor, wherein the computer readable storage medium is used for storing a computer program, an air volume sensor and a particulate matter concentration sensor are arranged on the outer side surface and the inner side surface of a filter screen at an air inlet of the indoor unit, and the computer program is read by the processor and run to realize the filth blockage detection method for the air conditioner indoor unit provided by the embodiment.
The present embodiment further provides a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the computer program implements the processes of the above-mentioned method for detecting filth blockage of an internal unit of an air conditioner, and can achieve the same technical effects, and in order to avoid repetition, the detailed description is omitted here. The computer-readable storage medium may be a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk.
Of course, those skilled in the art will understand that all or part of the processes in the methods of the above embodiments may be implemented by instructing the control device to perform operations through a computer, and the programs may be stored in a computer-readable storage medium, and when executed, the programs may include the processes of the above method embodiments, where the storage medium may be a memory, a magnetic disk, an optical disk, and the like.
Although the present invention is disclosed above, the present invention is not limited thereto. Various changes and modifications may be effected therein by one skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.
Finally, it should also be noted that, 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 necessarily 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, article, 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, article, or apparatus. Without further limitation, an element defined by the phrase "comprising a … …" does not exclude the presence of another identical element in a process, method, article, or apparatus that comprises the element.
The embodiments in the present description 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. The dirty blockage detection device of the air conditioner indoor unit and the air conditioner disclosed by the embodiment correspond to the dirty blockage detection method of the air conditioner indoor unit disclosed by the embodiment, so that the description is simple, and relevant parts can be referred to the description of the method part.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Although the present invention is disclosed above, the present invention is not limited thereto. Various changes and modifications may be effected therein by one skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (10)
1. A filth blockage detection method for an air conditioner indoor unit is characterized by comprising the following steps:
acquiring the diameter of the particulate matter of the air at the air inlet of the indoor unit detected after the air conditioner is started every time and the running time of the air conditioner started every time;
determining an equivalent cumulative operating time of the air conditioner based on the particle diameter and the starting-up time;
detecting the air quantity attenuation rate and the particulate matter concentration attenuation rate between the outer side and the inner side of the filter screen at the air inlet of the indoor unit;
and judging whether the equivalent accumulated operation time length, the air volume attenuation rate and the particulate matter concentration attenuation rate are all in a preset filth blockage interval, and if so, determining that a filter screen at an air inlet of the indoor unit is filth-blocked.
2. A filth blockage detection method for an indoor unit of an air conditioner according to claim 1, wherein the step of determining an equivalent cumulative operation time period of the air conditioner based on the particle diameter and the on-time period comprises:
determining a corresponding time correction coefficient based on the diameter of the particulate matter detected after each startup; wherein the time correction factor is positively correlated with the particle diameter;
calculating the equivalent accumulated running time length based on the starting running time length and the time correction coefficient; wherein, the calculation formula of the equivalent accumulated running time length is as follows: t = T 1 *t 1 +T 2 *t 2 +…+T n *t n T is the equivalent accumulated running time length T n The starting-up running time length t for the nth starting-up n Corresponding to the particle diameter of air at the air inlet after the nth startAnd (4) a time correction coefficient, wherein n is the current accumulated starting-up times.
3. A filth blockage detection method for an indoor unit of an air conditioner as claimed in claim 2, wherein the step of determining a corresponding time correction factor based on the diameter of particulate matter detected after each power-on comprises:
if the diameter of the particulate matter detected after starting up is smaller than or equal to a first preset PM value, determining a time correction coefficient corresponding to the diameter of the particulate matter as a first coefficient;
if the diameter of the particulate matter detected after starting is larger than the first preset PM value and smaller than or equal to a second preset PM value, determining a time correction coefficient corresponding to the diameter of the particulate matter as a second coefficient;
if the diameter of the particulate matter detected after the startup is larger than the second preset PM value and smaller than or equal to a third preset PM value, determining a time correction coefficient corresponding to the diameter of the particulate matter as a third coefficient; wherein the first coefficient < the second coefficient < the third coefficient.
4. A filth blockage detection method for an indoor unit of an air conditioner as claimed in claim 1, wherein air volume sensors are disposed on the outer side and the inner side of the filter screen, and the step of detecting the air volume attenuation rate between the outer side and the inner side of the filter screen at the air inlet of the indoor unit comprises:
detecting the outside air quantity and the inside air quantity of a filter screen at an air inlet of the indoor unit based on an air quantity sensor, and calculating the air quantity attenuation rate based on the outside air quantity and the inside air quantity; wherein the calculation formula of the air volume attenuation rate is Δ V = (V1-V2)/V1, Δ V is the air volume attenuation rate, V1 is the outside air volume, and V2 is the inside air volume.
5. A filth blockage detection method for an indoor unit of an air conditioner as claimed in claim 1, wherein the outside and inside of the filter screen are provided with particulate matter concentration sensors, and the step of detecting the attenuation rate of the particulate matter concentration between the outside and the inside of the filter screen at the air inlet of the indoor unit comprises:
detecting the concentration of outside particles and the concentration of inside particles of a filter screen at an air inlet of the indoor unit based on the particle concentration sensor, and calculating the particle concentration attenuation rate based on the concentration of the outside particles and the concentration of the inside particles; wherein the calculation formula of the particle concentration attenuation rate is Δ C = (C1-C2)/C1, Δ C is the particle concentration attenuation rate, C1 is the outside particle concentration, and C2 is the inside particle concentration.
6. A filth blockage detection method for an indoor unit of an air conditioner as claimed in claim 1, wherein the step of judging whether the equivalent accumulated operation time length, the air volume attenuation rate and the particulate matter concentration attenuation rate are all in a preset filth blockage interval, and if so, determining that a filth blockage occurs to a filter screen at an air inlet of the indoor unit comprises the following steps:
judging whether the equivalent accumulated operation time length, the air volume attenuation rate and the particulate matter concentration attenuation rate simultaneously satisfy the condition that T is larger than T Is provided with 、△V＞V Is provided with And Δ C > C Is provided with If yes, determining that the filter screen at the air inlet of the indoor unit is dirty and blocked; wherein T is the equivalent accumulated running time length T Is provided with Is a preset time length threshold value, and DeltaV is the air volume attenuation rate, V Is provided with In order to preset the air quantity attenuation threshold value,
Δ C is the attenuation rate of the concentration of the particulate matter, C Is provided with Is a preset concentration decay threshold.
7. A filth blockage detection method for an indoor unit of an air conditioner according to claim 2, further comprising:
when the filter screen at the air inlet of the indoor unit is determined to be dirty and blocked, sending a dirty and blocked prompt;
and when the filter screen at the air inlet of the indoor unit is cleaned, controlling the accumulated starting-up times and the equivalent accumulated running time length to be reset.
8. A filth blockage detection device of an air conditioner indoor unit is characterized by comprising:
the acquisition module is used for acquiring the diameter of the particulate matters of the air at the air inlet of the indoor unit detected after the air conditioner is started up every time and the running time of the air conditioner started up every time;
the determining module is used for determining the equivalent accumulated running time of the air conditioner based on the particle diameter and the starting-up time;
the detection module is used for detecting the air quantity attenuation rate and the particulate matter concentration attenuation rate between the outer side and the inner side of the filter screen at the air inlet of the indoor unit;
and the judging module is used for judging whether the equivalent accumulated running time length, the air volume attenuation rate and the particulate matter concentration attenuation rate are all in a preset filth blockage interval, and if so, determining that a filter screen at an air inlet of the indoor unit is filth blocked.
9. An air conditioner, characterized in that, comprising an indoor unit, a computer readable storage medium and a processor storing a computer program, wherein, an air quantity sensor and a particulate matter concentration sensor are arranged on the outer side surface and the inner side surface of a filter screen at the air inlet of the indoor unit, and the computer program is read and run by the processor to realize the method of any one of claims 1 to 7.
10. A computer-readable storage medium, characterized in that it stores a computer program which, when read and executed by a processor, implements the method of any one of claims 1-7.
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