CN103940630B - Failure detection method of HEPA filter of air purifier - Google Patents
Failure detection method of HEPA filter of air purifier Download PDFInfo
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- CN103940630B CN103940630B CN201410160211.1A CN201410160211A CN103940630B CN 103940630 B CN103940630 B CN 103940630B CN 201410160211 A CN201410160211 A CN 201410160211A CN 103940630 B CN103940630 B CN 103940630B
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Abstract
The invention provides a failure detection method of an HEPA filter of an air purifier. The failure detection method comprises the following steps that after a new HEPA filter is used, a speed driving signal H is sent to a motor of the air purifier, and the speed V1 of the motor is detected; the speed driving signal H is sent to the motor at any moment, the speed Vn of the motor at the moment is detected, and when Vn >= K1*V1, it is determined that the HEPA filter fails, wherein K1 is a failure coefficient. The failure detection method can be used for detecting whether the HEPA filter really fails or not in real time, accurately remind users whether the HEPA filter needs to be replaced, and enable the purifier to be suitable for different environments.
Description
Technical field
The present invention relates to filter detection technique field, particularly to the HEPA of a kind of air purifier
The failure detection side of (high efficiency particulate air filter, high efficiency particle air filter) filter
Method.
Background technology
At present, when air purifier changes HEPA filter, when mainly running according to depurator is accumulative
Between judge whether HEPA filter lost efficacy, once run the time reach set replacing construction, just sentence
Disconnected HEPA filter had lost efficacy, and prompting user changes.This judgment mode using the set time is deposited
In following drawback:
If using environment fine, pollute few, when running between reach the replacing construction of HEPA, HEPA
Filter did not the most lose efficacy, and at this moment reminded user's replacing can cause the wasting of resources.
If using environment excessively poor, then HEPA can shift to an earlier date in the replacing construction inefficacy set, but only
Changing device does not reminds user to change, and so within the ensuing time, depurator does not has the effect of purification.
Summary of the invention
It is an object of the invention to provide the failure detection side of the HEPA filter of a kind of air purifier
Method, to solve the current HEPA inaccurate problem of inefficacy criterion.
In order to solve problems with, this invention takes techniques below scheme:
A kind of abatement detecting method of the HEPA filter of air purifier, it comprises the following steps:
After the HEPA filter more renewed, send a speed to the motor of air purifier and drive signal H, and
Speed V1 of detection motor；Drive signal H to motor transmission speed at any time, and detect motor and exist
Speed Vn in this moment, as Vn >=K1*V1, i.e. judges HEPA filter failure, therein
K1 is invalid coefficient.
A kind of abatement detecting method of the HEPA filter of air purifier, it comprises the following steps:
After the filter more renewed, send a speed to the motor of air purifier and drive signal H1, make motor work
Make in speed V；Make motor work in speed V at any time, and detect what this moment sent to motor
Speed drives signal Hn, as Hn≤K2*H1, i.e. judges HEPA filter failure, therein
K2 is invalid coefficient.
Preferably, described speed drives signal to be voltage signal or pwm signal.
Analyzing and understand, the present invention can detect HEPA filter in real time and the most really lose efficacy, and accurately points out use
Family, the need of changing HEPA filter, can make depurator be applicable to different environment.
Detailed description of the invention
Below in conjunction with detailed description of the invention, the present invention is described in further details.
Before specifically introducing the specific embodiment of the invention, the principle first describing the present invention is as follows:
In air purifier, before HEPA filter failure, the windage of HEPA filter is little, turbine
Intake big, motor load weight.When HEPA filter failure, the windage of HEPA filter is very
Greatly, the intake of turbine is the least, causes the load reduction of motor.Therefore, by judging the load of motor
The characteristic that size shows, can accurately judge whether HEPA filter lost efficacy.
Based on above-mentioned principle, the first scheme that the present invention provides is:
After the HEPA filter that air purifier more renews, drive signal H to motor one speed, if
Speed V1 determining motor is new HEPA filter benchmark.
Give motor one speed at any time and drive signal H, and detect speed Vn of motor.Work as Vn
During >=K1*V1, (K1 is invalid coefficient), it is judged that for HEPA filter failure, prompting user changes
HEPA filter.
Visible, the speed constant to motor drives signal (such as: voltage signal or pwm signal etc.), when
HEPA filter is new, and windage is little, and turbine intake is big, and motor load weight, rotating speed is slow.Work as HEPA
During filter failure, windage is big, and intake is little, load reduction, and the rotating speed of motor accelerates.By judging
The size of the feedback speed signal of motor, it can be determined that whether HEPA filter lost efficacy.
Based on above-mentioned principle, the alternative plan that the present invention provides is:
After the HEPA filter that air purifier more renews, drive signal H1 to motor one speed, make
Motor works in speed V, drives signal on the basis of now setting speed drives signal H1.
Make motor work in speed V at any time, and the speed detecting now motor drives signal Hn.
As Hn≤K2*H1, (K2 is invalid coefficient), i.e. may determine that HEPA filter failure, prompting
User changes HEPA filter.
Visible, control motor and be in constant feedback speed signal, before HEPA filter failure, negative
Load-carrying, needs to drive signal (such as: voltage signal or pwm signal etc.) big to the speed of motor.?
After HEPA filter failure, load is light, needs to drive signal (such as: voltage signal to the speed of motor
Or pwm signal etc.) little.By judging to the driving signal magnitude of motor, it can be determined that HEPA mistake
Whether filter lost efficacy.
Invalid coefficient above can be obtained by test of many times, the most repeatedly compares new HEPA and filters
Device, the coherent signal of HEPA filter of inefficacy, the relevant letter of HEPA filter that then will lose efficacy
Number value is divided by the correlated signal values of new HEPA filter, then averages, and the speed of motor is driven
Dynamic signal, feedback speed signal can be obtained by the central controller of air purifier.
To sum up, the present invention can accurately judge whether HEPA filter lost efficacy by following two mode:
Driving signal to the constant speed of motor, the rate signal of Negotiation speed feedback signal and setting is sentenced
Whether disconnected HEPA filter lost efficacy.
Controlling motor and be in constant feedback speed signal, Negotiation speed drives signal to drive with the speed of setting
Dynamic signal judges whether HEPA filter lost efficacy.
As known by the technical knowledge, the present invention can be by other essence without departing from its spirit or essential feature
Embodiment realize.Therefore, embodiment disclosed above, for each side, is all to lift
Example illustrates, is not only.All within the scope of the present invention or within being equal to the scope of the present invention
Change and be all included in the invention.
Claims (4)
1. the abatement detecting method of the HEPA filter of an air purifier, it is characterised in that bag
Include following steps:
After the HEPA filter more renewed, send a speed to the motor of air purifier and drive signal
H, and detect speed V1 of motor；
Drive signal H to motor transmission speed at any time, and detect the motor speed in this moment
Vn, as Vn >=K1*V1, i.e. judges that HEPA filter failure, K1 therein are invalid coefficient.
Abatement detecting method the most according to claim 1, it is characterised in that described speed drives letter
Number it is voltage signal or pwm signal.
3. the abatement detecting method of the HEPA filter of an air purifier, it is characterised in that bag
Include following steps:
After the filter more renewed, send a speed to the motor of air purifier and drive signal H1, make
Motor works in speed V；
Make motor work in speed V at any time, and detect the speed that this moment sends to motor and drive
Signal Hn, as Hn≤K2*H1, i.e. judges HEPA filter failure, and K2 therein was for losing efficacy
Coefficient.
Abatement detecting method the most according to claim 3, it is characterised in that described speed drives letter
Number it is voltage signal or pwm signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410160211.1A CN103940630B (en) | 2014-04-22 | 2014-04-22 | Failure detection method of HEPA filter of air purifier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410160211.1A CN103940630B (en) | 2014-04-22 | 2014-04-22 | Failure detection method of HEPA filter of air purifier |
Publications (2)
| Publication Number | Publication Date |
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| CN103940630A CN103940630A (en) | 2014-07-23 |
| CN103940630B true CN103940630B (en) | 2017-01-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410160211.1A Active CN103940630B (en) | 2014-04-22 | 2014-04-22 | Failure detection method of HEPA filter of air purifier |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108079701B (en) * | 2016-11-21 | 2020-11-06 | 苏州三星电子有限公司 | Method and system for detecting dust deposition degree of filter screen |
| CN107328024A (en) * | 2017-07-07 | 2017-11-07 | 深圳市鑫开源电子有限公司 | Screen pack stopping state detection method and air cleaning facility |
| CN113898984B (en) * | 2020-07-06 | 2024-03-26 | 佛山市顺德区美的洗涤电器制造有限公司 | Range hood, control method thereof and computer readable storage medium |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1667393A (en) * | 2004-03-08 | 2005-09-14 | 明基电通股份有限公司 | Method for detecting neatness of a strainer |
| CN201047868Y (en) * | 2007-06-05 | 2008-04-16 | 上海利康消毒高科技有限公司 | Air purifier filter screen obstruction and fan fault detection circuit |
| CN101318092A (en) * | 2008-04-10 | 2008-12-10 | 上海威乐汽车空调器有限公司 | Method for detecting filter stoppage of automobile air conditioner |
| WO2013016845A1 (en) * | 2011-08-04 | 2013-02-07 | Telefonaktiebolaget L M Ericsson (Publ) | Method and device for detecting clogging of a filter |
| CN102938023A (en) * | 2012-11-15 | 2013-02-20 | 创天昱科技(深圳)有限公司 | Effective utilization time integrating method and device for filter screen in air purifier |
-
2014
- 2014-04-22 CN CN201410160211.1A patent/CN103940630B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1667393A (en) * | 2004-03-08 | 2005-09-14 | 明基电通股份有限公司 | Method for detecting neatness of a strainer |
| CN201047868Y (en) * | 2007-06-05 | 2008-04-16 | 上海利康消毒高科技有限公司 | Air purifier filter screen obstruction and fan fault detection circuit |
| CN101318092A (en) * | 2008-04-10 | 2008-12-10 | 上海威乐汽车空调器有限公司 | Method for detecting filter stoppage of automobile air conditioner |
| WO2013016845A1 (en) * | 2011-08-04 | 2013-02-07 | Telefonaktiebolaget L M Ericsson (Publ) | Method and device for detecting clogging of a filter |
| CN102938023A (en) * | 2012-11-15 | 2013-02-20 | 创天昱科技(深圳)有限公司 | Effective utilization time integrating method and device for filter screen in air purifier |
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| CN103940630A (en) | 2014-07-23 |
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