CN104833050B - Detection means, the method for air regulator and its screen pack laying dust degree - Google Patents
Detection means, the method for air regulator and its screen pack laying dust degree Download PDFInfo
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- CN104833050B CN104833050B CN201510208632.1A CN201510208632A CN104833050B CN 104833050 B CN104833050 B CN 104833050B CN 201510208632 A CN201510208632 A CN 201510208632A CN 104833050 B CN104833050 B CN 104833050B
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- 239000000428 dust Substances 0.000 title claims abstract description 131
- 238000000034 method Methods 0.000 title claims abstract description 61
- 238000001514 detection method Methods 0.000 title claims abstract description 35
- 230000008021 deposition Effects 0.000 claims description 86
- 230000001960 triggered effect Effects 0.000 claims description 22
- 238000009825 accumulation Methods 0.000 claims description 19
- 238000001914 filtration Methods 0.000 description 5
- 239000012528 membrane Substances 0.000 description 4
- 230000035945 sensitivity Effects 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 239000004973 liquid crystal related substance Substances 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
-
- 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
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- Mechanical Engineering (AREA)
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- Physics & Mathematics (AREA)
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- Mathematical Physics (AREA)
- Signal Processing (AREA)
- Filtering Of Dispersed Particles In Gases (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention discloses a kind of detection means of screen pack laying dust degree, including：Rotating speed acquisition module, for obtaining air regulator in the process of running, trigger the current running speed of blast switch；Difference calculating module, for calculating the difference of default operation threshold values and the current running speed；Laying dust degree determining module, for determining screen pack laying dust degree.The invention also discloses a kind of detection method of screen pack laying dust degree, and a kind of air regulator for including the filter screen detection device.The present invention automatically detects the screen pack laying dust degree of air regulator, facilitates user to understand and change in time by the use of blast switch.
Description
Technical Field
The invention relates to the field of air conditioners, in particular to an air conditioner and a device and a method for detecting the dust deposition degree of a filter screen of the air conditioner.
Background
With the development of air filtration technology, more and more devices adopt filter screens to purify air, such as air conditioners and air purifiers, and various grades of filter screens such as coarse filtration, medium filtration and high filtration are widely adopted to filter various fibers and particles in air. After the equipment runs for a period of time, more and more accumulated dust can block the filter screen, so that the filter screen loses the filtering function.
The existing method for detecting the dust deposition degree of the filter screen comprises the following steps: firstly, detecting the dust concentration in the use environment of the air conditioner, then recording the operation time under different dust concentrations and converting the operation time into the accumulated operation time, and finally obtaining the dust deposition degree of the filter screen according to the accumulated operation time.
Although the detection method has simple logic, the accumulated running time and the dust deposition degree of the filter screen do not have direct quantitative correspondence, so the method cannot accurately reflect the dust deposition condition of the filter screen.
Disclosure of Invention
The invention mainly aims to provide an air conditioner and a device and a method for detecting the dust deposition degree of a filter screen of the air conditioner, and aims to solve the problem of inaccurate detection of the dust deposition degree of the filter screen.
In order to achieve the above object, the present invention provides a device for detecting dust deposition degree of a filter screen, comprising:
the device comprises a rotating speed acquisition module, a difference value calculation module and a dust accumulation degree determination module; wherein,
the rotating speed acquisition module is used for acquiring the current operating rotating speed of the air pressure switch triggered by the air conditioner in the operating process;
the difference value calculating module is used for calculating the difference value between a preset operation threshold value and the current operation rotating speed;
and the dust deposition degree determining module is used for determining the dust deposition degree of the filter screen according to the difference value between the preset operation threshold value and the current operation rotating speed.
Preferably, the preset operation speed threshold is the fan speed TS1 of triggering the wind pressure switch, which is obtained when the air conditioner is operated for the first time.
Preferably, the fan speed TS1 for triggering the wind pressure switch, obtained when the air conditioner is operated for the first time, includes:
the method comprises the following steps that after leaving a factory, the air conditioner is operated for the first time, the rotating speed of a fan triggering a wind pressure switch is scanned according to a preset rotating speed interval to obtain the rotating speed of the fan triggering the wind pressure switch; or,
and the air conditioner scans the acquired fan rotating speed of the triggering wind pressure switch according to a preset rotating speed interval when the filter screen is cleaned or replaced and runs for the first time.
Preferably, the rotation speed obtaining module is configured to: and controlling the fan to scan the rotating speed according to a preset rotating speed interval to obtain the fan rotating speed TS2 for triggering the wind pressure switch.
Preferably, the device for detecting the dust deposition degree of the filter screen further comprises:
and the reminding module is used for reminding the user according to the determined dust accumulation degree of the filter screen.
In addition, in order to achieve the above object, the present invention further provides an air conditioner, comprising a filter screen, a fan, a wind pressure switch and a filter screen dust deposition degree detection device, wherein the wind pressure switch is arranged at two sides of the filter screen or one end of the wind pressure switch is arranged at one side of the filter screen and the other end of the wind pressure switch is arranged in the outside air, and the filter screen dust deposition degree detection device is used for detecting the difference value between the current fan rotation speed and the preset threshold rotation speed and determining the filter screen dust deposition degree according to the difference value; the dust accumulation degree detection device is the dust accumulation degree detection device.
In addition, in order to achieve the above object, the present invention further provides a method for detecting a dust deposition degree of a filter screen, wherein the method for detecting the dust deposition degree of the filter screen comprises the following steps:
s1, acquiring the current running rotating speed of the fan when the wind pressure switch is triggered in the running process of the air conditioner;
s2, calculating the difference between a preset running speed threshold and the current running speed;
and S3, determining the dust deposition degree of the filter screen according to the difference value between the preset operation threshold value and the current operation rotating speed.
Preferably, the preset operation speed threshold is a fan speed TS1 of triggering the wind pressure switch, which is obtained when the air conditioner is operated for the first time.
Preferably, the fan speed TS1 for triggering the wind pressure switch, obtained when the air conditioner is operated for the first time, includes:
the method comprises the following steps that after leaving a factory, the air conditioner is operated for the first time, the rotating speed of a fan triggering a wind pressure switch is scanned according to a preset rotating speed interval to obtain the rotating speed of the fan triggering the wind pressure switch; or,
and the air conditioner scans the acquired fan rotating speed of the triggering wind pressure switch according to a preset rotating speed interval when the filter screen is cleaned or replaced and runs for the first time.
Preferably, during the operation of the air conditioner, the fan is controlled to operate according to a preset rotating speed, and the rotating speed TS2 of the fan triggering the wind pressure switch is obtained.
Preferably, the method further comprises the following steps after determining the dust deposition degree of the filter screen according to the comparison result:
and S4, reminding the user according to the determined dust laying degree of the filter screen.
The air conditioner has the beneficial effect that through the arrangement of the air pressure switch, the air conditioner can reflect the dust deposition degree of the filter screen more accurately by calculating the difference value between the preset operation threshold value and the current operation rotating speed.
In addition, after the dust deposition degree of the filter screen is determined and reflected, the dust deposition state of the current filter screen can be reminded to a user, so that the user can better know the dust deposition degree of the filter screen in the current state and make a judgment in time in the using process, and the method is more convenient and quicker.
Drawings
FIG. 1 is a schematic view of an air conditioner according to the present invention;
FIG. 2 is a schematic functional block diagram of a first embodiment of a device for detecting dust deposition on a filter screen according to the present invention;
FIG. 3 is a functional block diagram of a second embodiment of the apparatus for detecting dust deposition on a filter screen according to the present invention;
FIG. 4 is a schematic flow chart illustrating a method for detecting a degree of dust deposition on a filter screen according to a first embodiment of the present invention;
FIG. 5 is a schematic flow chart illustrating a method for detecting a degree of dust deposition on a filter according to a second embodiment of the present invention;
fig. 6 is a flowchart illustrating a specific implementation process of a second embodiment of the method for detecting a dust deposition degree on a filter screen according to the present invention.
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The invention relates to a detection scheme of dust accumulation degree of a filter screen, which is mainly applied to an air conditioner, wherein the air conditioner can comprise an air conditioner, an air purifier and the like. The detection scheme realizes automatic detection of the dust laying degree of the filter screen.
Referring to fig. 1, fig. 1 is a structure of an air conditioner. The air conditioner includes a filter screen 500, a fan 300, a wind pressure switch 400 and a detecting device 100 for detecting the dust deposition degree of the filter screen. This wind pressure switch 400 includes both ends, and first end and second end can correspond the setting in the both sides of filter screen 500, perhaps first end setting is in one side of filter screen 500, and the second end setting is in the outside air. The filter screen dust deposition degree detection device 100 is configured to detect a current rotation speed of the fan 300, obtain a difference between the detected rotation speed of the fan and a preset rotation speed threshold, and determine the dust deposition degree of the filter screen 500 according to the difference. Fig. 1 shows a part of the structure of the air conditioner of the present invention, but the structure of the air conditioner is not limited, and for example, the air conditioner may further include a heat exchanger or the like.
The wind pressure switch 400 has two detection ports, namely a positive pressure detection port and a negative pressure detection port, and the cavity thereof is divided into a positive pressure cavity and a negative pressure cavity, and the two cavities are isolated by a skin membrane. If the first end and the second end of the wind pressure switch 400 are disposed on two sides of the filter screen 500, when there is a pressure source, the positive pressure chamber and the negative pressure chamber will generate a force in the same direction, and push the membrane of the wind pressure switch 400 to move, thereby triggering the wind pressure switch 400. If the first end of the wind pressure switch 400 is disposed at one side of the filter screen 500 and the second end of the wind pressure switch 400 is disposed in the outside air, the pressure of one of the positive pressure detection port or the negative pressure detection port is 0 Pa. When a pressure source exists, the positive pressure cavity generates a force in one direction to push the membrane of the wind pressure switch 400 to move so as to trigger the wind pressure switch 400; or a force in one direction is generated from the negative pressure chamber to push the membrane of the wind pressure switch 400 to move, so that the wind pressure switch 400 is triggered.
In this embodiment, the dust deposition degree of the filter screen 500 is automatically detected by calculating the difference between the preset operation threshold and the current fan operation speed for triggering the wind pressure switch 400.
Referring to fig. 2, fig. 2 is a functional module of a first embodiment of a device for detecting dust deposition on a filter screen according to the present invention. The device 100 for detecting the dust deposition degree of the filter screen comprises a rotating speed acquisition module 11, a difference value calculation module 12 and a dust deposition degree determination module 13; wherein,
the rotating speed obtaining module 11 is configured to obtain a current operating rotating speed of the air conditioner in the operating process of the air conditioner, where the current operating rotating speed triggers the wind pressure switch 400;
the difference value calculating module 12 is configured to calculate a difference value between a preset rotation speed threshold and the current operation rotation speed;
and the dust deposition degree determining module 13 is configured to determine the dust deposition degree of the filter screen according to a difference between a preset rotation speed threshold and the current operation rotation speed.
Because the dust deposition degree of the filter screen 500 is increased after the air conditioner is operated, and the change of the dust deposition degree of the filter screen 500 causes the pressure difference at two sides of the filter screen 500 to change, the wind pressure switch 400 is arranged in the air conditioner instead of the pressure difference sensor in the embodiment of the invention and is used for detecting the dust deposition degree. Specifically, the present invention detects or sets in advance a fan rotation speed threshold value that triggers the wind pressure switch when the filter screen 500 of the air conditioner is clean. In the operation process of the air conditioner, the current fan rotating speed for triggering the wind pressure switch 400 is obtained, the detected current fan rotating speed is compared with a fan rotating speed threshold value detected or set in advance, and whether dust is accumulated on the filter screen 500 or not and the dust accumulation degree are determined according to the comparison result.
In the embodiment, the current fan rotating speed of the air pressure switch 400 triggered in the operation process of the air conditioner is obtained and compared with the fan rotating speed threshold value, so that the net-passing dust accumulation degree can be accurately determined. In addition, the embodiment of the invention replaces the pressure difference sensor with the wind pressure switch 400 to detect the dust deposition degree, is simple and reliable, and saves the cost.
Further, the preset rotation speed threshold in the above embodiment may be the rotation speed TS1 of the fan 300 triggering the wind pressure switch 400, which is obtained when the air conditioner is operated for the first time.
Specifically, in one example, the preset rotation speed threshold may be pre-stored in the air conditioner at the time of factory shipment. That is, before the air conditioner leaves the factory, the air conditioner is tested, the fan 300 of the air conditioner is controlled to scan and operate in a specified rotating speed interval, and the rotating speed of the fan when the wind pressure switch 400 is triggered is stored in the air conditioner, so that the subsequent dust accumulation degree can be called when being judged. For example, when the air conditioner is first operated, a fan rotational speed threshold value that triggers the wind pressure switch 400 is invoked from a specified position of the air conditioner.
In another example, the preset rotation speed threshold may be that when the air conditioner operates for the first time, the fan 300 of the air conditioner is controlled to scan and operate in a preset rotation speed interval, and then the fan rotation speed triggering the wind pressure switch 400 is obtained, so as to be used for subsequent dust deposition degree judgment.
Further, the fan speed threshold TS1 may include:
the method comprises the steps that after leaving a factory, the air conditioner is operated for the first time, rotating speed scanning is carried out according to a preset rotating speed interval, and the obtained rotating speed of a fan triggering a wind pressure switch 400 is obtained; or,
the air conditioner scans the rotation speed of the fan triggering the wind pressure switch 400 according to the preset rotation speed interval when the filter screen 500 is cleaned or replaced and then runs for the first time.
When the air conditioner is operated for the first time after leaving a factory, the fan rotating speed threshold TS1 can be obtained according to the control of a user; or automatically detecting that the air conditioner is firstly operated after leaving the factory, and acquiring a fan rotating speed threshold TS 1. Similarly, when the filter screen is cleaned or replaced for the first time, the air conditioner can also acquire a fan rotating speed threshold TS1 according to the control of a user; or when the air conditioner is firstly transported after being cleaned or replaced, the fan rotating speed threshold TS1 is obtained. The method specifically comprises the following steps: in an example, when the filter screen 500 of the air conditioner is not cleaned, the rotation speed of the fan 300 triggering the wind pressure switch 400 of the air conditioner becomes slower as the filter screen 500 becomes dirty, and after the filter screen 500 is cleaned or replaced, the rotation speed of the fan 300 triggering the wind pressure switch 400 of the air conditioner suddenly increases, so that it can be determined that the user has cleaned or replaced the filter screen 500, and at this time, the new rotation speed value triggering the wind pressure switch 400 is automatically set to the initial value TS1, and is stored in the storage module in place of the original initial value TS 1. In another example, when the triggered rotation speed of the wind pressure switch 400 returns to the vicinity of the initial value, the user is considered to have cleaned or replaced the filter screen 500, and the new value of the rotation speed of the triggered wind pressure switch 400 is automatically set to the initial value TS1 and stored in the storage module instead of the original initial value TS 1.
Further, the rotation speed obtaining module 11 is specifically configured to: and controlling the fan to scan the rotating speed according to a preset rotating speed interval to obtain the fan rotating speed TS2 for triggering the wind pressure switch.
In this embodiment, during the operation of the air conditioner, the fan 300 is controlled to scan and operate in a preset rotation speed interval, and the rotation speed scanning interval is consistent with the rotation speed scanning interval corresponding to the fan rotation speed threshold. Meanwhile, the fan rotation speed TS2 for triggering the wind pressure switch 400 is obtained. Specifically, the fan 300 is controlled to perform scanning operation in a rotation speed interval T1-Tn, and when the fan operates at a rotation speed T4 and the wind pressure switch 400 is triggered, the rotation speed T4 is used as the fan rotation speed TS2 obtained by the detection. It is understood that the scanning operation may be performed every fixed time after the power is turned on, or may be performed every time the power is turned on, or may be performed only after the power is turned on, without being limited thereto.
The difference calculating module 12 is configured to calculate a rotation speed difference Δ TS between a rotation speed TS1 of the fan 300 and a rotation speed TS2 of the fan 300. The dust deposition degree determining module 13 is configured to compare the obtained Δ TS with preset rotation speed difference parameters Ta and Tb and a maximum rotation speed value Tn, and determine whether a filter screen deposits dust and a dust deposition degree according to a comparison result. The method comprises the following specific steps:
if delta TS is less than or equal to Ta, the filter screen 500 is smooth;
if Ta < delta TS < Tb, the dust is accumulated on the filter screen 500 for the first level;
if the delta TS is larger than or equal to Tb, the dust accumulation of the filter screen is carried out for the second stage;
in particular, in the present embodiment, in order to determine whether or not the filter screen is dust-deposited and the dust-deposition degree, the following specific embodiments are further provided, specifically:
if the wind pressure switch 400 cannot be triggered after the fan scans and operates in the rotating speed interval T1-Tn, the dust accumulation of the filter screen 500 is serious;
if the rotation speed of the fan 300 changes abruptly or returns to the vicinity of the initial value TS1, the filter screen 500 is cleaned or replaced.
In this embodiment, after the initial value TS1 has been stored, in the later operation of the equipment, unless the filter screen 500 is cleaned again or replaced, the filter screen 500 becomes more dirty, so the trigger rotation speed of the wind pressure switch 400 is only lower and lower than the initial value TS 1. Therefore, in the later operation process, the fan 300 can be controlled to scan and operate in the rotating speed interval T1-TS 1 at intervals, and the current rotating speed TS2 of the fan 300 when the wind pressure switch 400 is triggered is obtained. At this time, if the scanning value suddenly returns to the vicinity of the initial value TS1, the filter screen 500 is cleaned or replaced by default. If the wind pressure switch 400 cannot be triggered in the scanning process from T1 to TS1, scanning is carried out according to the rotating speeds TS1 to Tn, if the rotating speed for triggering the wind pressure switch 400 is obtained in the range, the filter screen 500 is acquiescently cleaned or replaced, and the rotating speed value obtained through scanning is used as a new initial value TS1 to replace the original initial value TS 1. If the wind pressure switch 400 cannot be triggered by scanning according to the rotating speed interval TS 1-Tn, it is determined that the wind pressure switch 400 cannot be turned on, and the filter screen 500 is heavily dusted.
By adopting the mode to scan, the scanning time can be saved in the later operation process, the resources are saved, the waste is prevented, and the scanning speed can be effectively accelerated.
Further, because the wind pressure switch 400 is set at different positions, the rotation speeds of the fan 300 required for triggering the wind pressure switch 400 are not necessarily the same; also, according to different models of products to which the wind pressure switch 400 is applied in the air conditioner, the sensitivity of the wind pressure switch 400 used may be set according to the product model. Therefore, TS1, TS2, Δ TS, Ta, Tb, and T1 to Tn of the above-mentioned settings can be set with corresponding values according to different setting positions of the wind pressure switch 400 and different sensitivities of the wind pressure switch 400, that is, Ta, Tb, and Tn can be set in more detail according to actual use situations, for example, more parameters Ta, Tb, Tc, Td and the like are divided to form more divided areas, which is not limited to this.
The beneficial effect of this embodiment does, through this filter screen laying dust degree detection device 100 can be automatic the detection trigger wind pressure switch 400's fan rotational speed to through the difference of current fan rotational speed and preset rotational speed threshold value, compare with preset reference value, divide according to the comparative result, can be more intelligent accurate know filter screen 500 laying dust degree and whether wash or change, need not artifical the detection, convenient and fast.
Referring to fig. 3, fig. 3 is a functional module diagram of a second embodiment of the filter screen dust deposition degree detection apparatus according to the present invention. The device 100 for detecting the dust deposition degree of the filter screen comprises a rotating speed acquisition module 11, a difference value calculation module 12, a dust deposition degree determination module 13 and a reminding module 14; wherein,
the reminding module 14 respectively reminds the dust deposition degrees of the filter screens of different grades correspondingly:
if the delta TS is less than or equal to Ta, the reminding module 14 is used for reminding smoothness;
if Ta < [ delta ] TS < Tb, the reminding module 14 reminds that the dust is at the first level;
if the delta TS is larger than or equal to Tb, the reminding module 14 reminds that the dust is accumulated for two stages and simultaneously reminds replacement;
if the wind pressure switch 400 cannot be triggered after the fan scans and operates in the rotating speed interval T1-Tn, the reminding mode 14 reminds that the dust accumulation is serious and the replacement is reminded at the same time;
if the rotating speed of the fan 300 changes suddenly or returns to the vicinity of the initial value TS1, the filter screen 500 is cleaned or replaced, and the reminding module 14 cancels the reminding.
The reminding module 14 includes a display unit and/or an information sending unit, but is not limited thereto; the display unit can be an LED lamp and a liquid crystal display screen, but is not limited to the LED lamp and the liquid crystal display screen; the transmission mode of the information transmission unit may include wifi, bluetooth, infrared, radio frequency, zigbee, etc., but is not limited thereto. In practical application, a user can select one or more reminding modes according to needs.
The beneficial effect of this embodiment is that, through reminding the use of module 14, can make corresponding warning to the filter screen laying dust degree of different grades respectively to can use multiple warning mode. More convenient and fast and be difficult to neglect, this kind of mode can make the user more convenient understanding filter screen laying dust degree, in time wash or change.
Referring to fig. 4, fig. 4 is a schematic flow chart of a method for detecting a dust deposition degree of a filter screen according to a first embodiment of the present invention. The method for detecting the dust deposition degree of the filter screen comprises the following steps:
step S1, in the operation process of the air conditioner, acquiring the current operation rotating speed of the fan 300 when the wind pressure switch 400 is triggered;
step S2, calculating the difference between a preset running speed threshold and the current running speed;
and step S3, configured to determine the dust deposition degree of the filter screen 500 according to the difference between the preset operation threshold and the current operation rotation speed.
In the operation process of the air conditioner, along with the increase of the operation time, the dust deposition degree of the filter screen 500 is also increased, and the change of the dust deposition degree of the filter screen 500 causes the pressure difference between the two sides of the filter screen 500 to change, in this embodiment, the dust deposition degree of the filter screen is detected by using the wind pressure switch 400. Specifically, the fan rotation speed threshold of the wind pressure switch 400 is triggered by detecting or setting in advance that no dust is accumulated on the filter screen of the air conditioner. In the operation process of the air conditioner, along with the change of the dust deposition degree of the filter screen, different current fan rotating speeds of the triggered wind pressure switch 400 can be obtained, the detected current fan rotating speed is compared with a fan rotating speed threshold value detected or set in advance, and the dust deposition degree of the filter screen 500 can be obtained according to the comparison result.
In this embodiment, the dust deposition degree of the filter screen 500 can be accurately determined according to the comparison result by obtaining the current fan rotation speed of the air conditioner during the operation process, which triggers the wind pressure switch 400, and comparing the current fan rotation speed with the fan rotation speed threshold.
Further, the preset operation speed threshold is a fan speed TS1 which is obtained when the air conditioner operates for the first time and triggers the wind pressure switch.
The preset rotation speed threshold may be pre-stored in the air conditioner at the time of factory shipment. Specifically, before the air conditioner leaves the factory, the fan 300 of the air conditioner is controlled to scan and operate in a specified rotation speed interval, and the obtained fan rotation speed for triggering the wind pressure switch 400 is stored in the air conditioner so as to be called when the subsequent dust deposition degree is judged.
The preset rotation speed threshold value can also be used for controlling the fan 300 of the air conditioner to scan and operate in a preset rotation speed interval when a user uses the fan for the first time after leaving a factory, and the acquired fan rotation speed triggering the wind pressure switch 400 is stored in the air conditioner so as to be used for judging the subsequent dust deposition degree.
Further, the fan rotating speed TS1 for triggering the wind pressure switch, which is obtained when the air conditioner operates for the first time, includes:
the method comprises the following steps that after leaving a factory, the air conditioner is operated for the first time, the rotating speed of a fan triggering a wind pressure switch is scanned according to a preset rotating speed interval to obtain the rotating speed of the fan triggering the wind pressure switch; or,
and the air conditioner scans the acquired fan rotating speed of the triggering wind pressure switch according to a preset rotating speed interval when the filter screen is cleaned or replaced and runs for the first time.
When the triggering rotation speed of the wind pressure switch 400 changes suddenly or returns to the vicinity of the initial value, the user is considered to have cleaned or replaced the filter screen 500, the new rotation speed value of the triggering wind pressure switch 400 is automatically set as the initial value TS1, and the original initial value TS1 is replaced and stored in the storage module.
Further, during the operation of the air conditioner, the fan is controlled to operate according to a preset rotating speed, and the rotating speed TS2 of the fan triggering the wind pressure switch is obtained.
In the operation process of the air conditioner, the fan 300 is controlled to scan and operate in a preset rotating speed interval, and the rotating speed scanning interval is the rotating speed scanning interval for obtaining the fan rotating speed threshold. The acquired blower rotation speed for triggering the wind pressure switch 400 at this time is TS 2. And calculating a rotating speed difference value delta TS between the rotating speed TS1 and the rotating speed TS 2. And comparing the obtained delta TS with preset rotation speed difference parameters Ta and Tb and a highest rotation speed value Tn, and determining whether the filter screen is dust-deposited and the dust-deposition degree according to the comparison result. The method comprises the following specific steps:
if delta TS is less than or equal to Ta, the filter screen 500 is smooth;
if Ta < delta TS < Tb, the dust is accumulated on the filter screen 500 for the first level;
if the delta TS is larger than or equal to Tb, the dust accumulation of the filter screen is carried out for the second stage;
in particular, in the present embodiment, in order to determine whether or not the filter screen is dust-deposited and the dust-deposition degree, the following specific embodiments are further provided, specifically:
if the fan scans and operates in the rotating speed interval T1-Tn, the wind pressure switch 400 still cannot be triggered, and the dust accumulation of the filter screen 500 is serious;
if the rotation speed of the fan 300 changes abruptly or returns to the vicinity of the initial value TS1, the filter screen 500 is cleaned or replaced.
By adopting the mode to scan, the scanning time can be saved in the later operation process, the resources are saved, the waste is prevented, and the scanning speed can be effectively accelerated.
The scanning mode in this embodiment also has a preferable scheme that, after the fan rotation speed TS1 for triggering the wind pressure switch during the first operation is obtained, T1 to TS1 are used as the rotation speed interval for scanning during the later operation. And if the rotating speed for triggering the wind pressure switch is suddenly increased and is within the range of T1-TS 1, the filter screen is considered to be cleaned or replaced. If T1-TS 1 is used as a rotating speed interval for scanning, the wind pressure switch cannot be triggered, TS 1-Tn is selected to be used as a rotating speed interval for scanning, and if the rotating speed of a fan triggering the wind pressure switch is obtained, the filter screen is considered to be cleaned or replaced. If the wind pressure switch cannot be triggered by using the T1-TS 1 as a rotating speed interval for scanning, and the wind pressure switch cannot be triggered by selecting the TS 1-Tn as a rotating speed interval for scanning, the dust accumulation of the filter screen is considered to be serious, and the wind pressure switch cannot be turned on. After the cleaning or the replacement of the filter screen is confirmed, the rotation speed value obtained by scanning is used as a new initial value TS1 to replace the original initial value TS 1.
Since the positions of the wind pressure switches 400 may be different and different models of products may use wind pressure switches with different sensitivities, the required fan rotation speeds for triggering the wind pressure switches may be different. Therefore, the TS1, TS2, Δ TS, Ta, Tb, and T1 to Tn set as described above may set corresponding values or divide corresponding reference intervals according to different setting positions of the wind pressure switch 400 and different sensitivities of the wind pressure switch 400, but are not limited thereto.
The method has the advantages that the difference value between the current fan rotating speed and the preset rotating speed threshold value is compared with the preset reference value, and the difference value is divided according to the comparison result, so that the dust deposition degree of the filter screen 500 and whether the filter screen is cleaned or replaced can be more intelligently and accurately known, manual detection is not needed, and the method is convenient and fast. Meanwhile, a more efficient detection method is provided, energy can be saved, and unnecessary waste is prevented.
Referring to fig. 5, fig. 5 is a schematic flow chart of a method for detecting a dust deposition degree of a filter screen according to a second embodiment of the present invention. In this embodiment, after the step S3, the method further includes:
and step S4, reminding the user according to the determined dust laying degree of the filter screen.
The reminder may be sent a message and illuminate an LED or lcd, etc., without limitation. The reminding mode can be specifically as follows:
if the delta TS is less than or equal to Ta, reminding smooth;
if Ta < [ delta ] TS < Tb, reminding the dust accumulation as the first level;
if the delta TS is larger than or equal to Tb, reminding that the dust is accumulated and simultaneously reminding replacement;
if the fan scans and operates in the rotating speed interval T1-Tn, the wind pressure switch 400 still cannot be triggered to remind that the dust deposition is serious and the replacement is reminded;
if the rotation speed of the fan 300 changes suddenly or returns to the vicinity of the initial value TS1, the filter screen 500 is cleaned or replaced, and the reminder is removed. By the method, the problem that the detection result of the dust deposition degree of the filter screen is inaccurate can be solved, corresponding reminding can be respectively made on the dust deposition degrees of the filter screens of different grades after the dust deposition degree of the filter screen is determined, and a user can know the dust deposition degree of the filter screen more timely and conveniently to clean or replace the filter screen by using various reminding modes.
Referring to fig. 6, a flow chart of a specific implementation process of the first embodiment of the method for detecting the dust deposition degree of the filter screen of the present invention includes the following steps:
s100, operating the air conditioner for the first time;
step S110, obtaining the rotating speed TS1 of the fan 300 of which the first operating time triggers the wind pressure switch 400;
step S120, the air conditioner continuously operates;
step S130, acquiring the rotating speed TS2 of the fan 300 triggering the wind pressure switch 400 in the current running state;
step S140, calculating a difference value delta TS between the rotating speeds TS1 and TS 2;
step S150, judging whether delta TS is less than or equal to Ta, if so, performing step S160, and otherwise, performing step S170;
step S160, normal operation of equipment;
step S170, judging whether Ta < delta TS < Tb, if yes, performing step S180, and if not, performing step S190;
step S180, sending prompt information or lightening a certain color LED or panel for display;
s190, judging whether the delta TS is larger than or equal to Tb, if so, performing S200, and otherwise, performing S210;
s200, prompting replacement;
step S210, judging whether the running speed of the fan is suddenly changed or returns to the vicinity of an initial value, if so, performing step S220, and if not, performing step S200;
and step S220, storing the new value as an initial value, and clearing the reminding or panel mark.
By the method, the dust deposition degree of the filter screen 500 can be detected more accurately, the dust deposition degree of the filter screen 500 can be detected automatically by combining the device in the air conditioner and the method, and the dust deposition degree of the filter screen can be reminded to a user by sending prompt information or lightening a certain color LED or a panel for display and the like, so that the method is more intelligent, rapid, accurate and timely and is convenient for the user to use.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (11)
1. The utility model provides a detection apparatus for filter screen laying dust degree, a serial communication port, detection apparatus for filter screen laying dust degree includes the wind pressure switch, wind pressure switch one end sets up in filter screen one side, and the other end setting is at filter screen opposite side or sets up in the outside air, detection apparatus for filter screen laying dust degree includes: the device comprises a rotating speed acquisition module, a difference value calculation module and a dust accumulation degree determination module; wherein,
the rotating speed acquisition module is used for acquiring the current rotating speed of the fan when the air conditioner triggers the wind pressure switch in the operation process;
the difference value calculating module is used for calculating the difference value between a preset rotating speed threshold value and the current fan rotating speed;
and the dust accumulation degree determining module is used for determining the dust accumulation degree of the filter screen according to the difference value between the preset rotating speed threshold value and the current fan rotating speed.
2. The apparatus for detecting the degree of dust deposition on a filter screen according to claim 1, wherein the preset operation speed threshold is a fan speed TS1 for triggering a wind pressure switch, which is obtained when the air conditioner is operated for the first time.
3. The apparatus for detecting the dust deposition degree on a filter screen according to claim 2, wherein the fan speed TS1 for triggering the wind pressure switch when the air conditioner is operated for the first time comprises:
the method comprises the following steps that after leaving a factory, the air conditioner is operated for the first time, the rotating speed of a fan triggering a wind pressure switch is scanned according to a preset rotating speed interval to obtain the rotating speed of the fan triggering the wind pressure switch; or,
and the air conditioner scans the acquired fan rotating speed of the triggering wind pressure switch according to a preset rotating speed interval when the filter screen is cleaned or replaced and runs for the first time.
4. The apparatus for detecting the dust deposition degree of a filter screen according to claim 1, wherein the rotation speed obtaining module is configured to:
and controlling the fan to scan the rotating speed according to a preset rotating speed interval to obtain the fan rotating speed TS2 for triggering the wind pressure switch.
5. The apparatus for detecting the degree of deposition on a filter screen according to any one of claims 1 to 4, wherein the apparatus for detecting the degree of deposition on a filter screen further comprises:
and the reminding module is used for reminding the user according to the determined dust accumulation degree of the filter screen.
6. An air conditioner comprises a filter screen and a fan, and is characterized by further comprising a wind pressure switch and a filter screen dust deposition degree detection device, wherein one end of the wind pressure switch is arranged on one side of the filter screen, the other end of the wind pressure switch is arranged on the other side of the filter screen or is arranged in the outside air, and the filter screen dust deposition degree detection device is used for detecting the difference value between the current fan rotating speed and the preset threshold rotating speed and determining the filter screen dust deposition degree according to the difference value; the filter screen dust deposition degree detection device is the filter screen dust deposition degree detection device of any one of claims 1 to 5.
7. A method for detecting a degree of dust deposition on a filter screen, which is applied to the air conditioner according to claim 6, the method comprising the steps of:
s1, acquiring the current running rotating speed of the fan when the wind pressure switch is triggered in the running process of the air conditioner;
s2, calculating the difference between a preset rotating speed threshold and the current operating rotating speed;
and S3, determining the dust deposition degree of the filter screen according to the difference value between the preset rotating speed threshold and the current operating rotating speed.
8. The method as claimed in claim 7, wherein the preset threshold value is a fan speed TS1 of triggering a wind pressure switch when the air conditioner is first operated.
9. The method for detecting the dust deposition degree of the filter screen according to claim 8, wherein the fan speed TS1 for triggering the wind pressure switch when the air conditioner is operated for the first time comprises:
the method comprises the following steps that after leaving a factory, the air conditioner is operated for the first time, the rotating speed of a fan triggering a wind pressure switch is scanned according to a preset rotating speed interval to obtain the rotating speed of the fan triggering the wind pressure switch; or,
and the air conditioner scans the acquired fan rotating speed of the triggering wind pressure switch according to a preset rotating speed interval when the filter screen is cleaned or replaced and runs for the first time.
10. The method for detecting the degree of dust deposition on a filter screen according to claim 7, wherein the fan is controlled to operate at a predetermined speed during the operation of the air conditioner, so as to obtain a fan speed TS2 for triggering the wind pressure switch.
11. The method for detecting the dust deposition degree of the filter screen according to any one of claims 7 to 10, wherein the method further comprises the following steps after the dust deposition degree of the filter screen is determined according to the comparison result:
and S4, reminding the user according to the determined dust laying degree of the filter screen.
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| CN108079701B (en) * | 2016-11-21 | 2020-11-06 | 苏州三星电子有限公司 | Method and system for detecting dust accumulation degree of filter screen |
| CN106940073A (en) * | 2017-03-31 | 2017-07-11 | 中科华瑞（北京）汽车环保科技有限公司 | A kind of maintaining method of in-car air cleaning facility and its application |
| WO2019136610A1 (en) * | 2018-01-09 | 2019-07-18 | 深圳市飓风智云科技有限公司 | System and method for determining blockage degree of intelligent real-time air flue filter screen |
| CN111248812B (en) * | 2018-12-03 | 2022-04-19 | 添可智能科技有限公司 | Dust collector filter screen replacement reminding method and system and dust collector |
| CN109579218B (en) * | 2019-01-17 | 2020-02-07 | 奥克斯空调股份有限公司 | Method and device for detecting and processing dust deposition of air conditioner and air conditioner |
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| CN111102684B (en) * | 2020-01-14 | 2021-03-02 | 珠海格力电器股份有限公司 | Cleaning method and device of air conditioner, storage medium and air conditioner |
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