CN106474839A - Obtain method, device and its air purifier of screen pack service efficiency value - Google Patents

Obtain method, device and its air purifier of screen pack service efficiency value Download PDF

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Publication number
CN106474839A
CN106474839A CN201510551117.3A CN201510551117A CN106474839A CN 106474839 A CN106474839 A CN 106474839A CN 201510551117 A CN201510551117 A CN 201510551117A CN 106474839 A CN106474839 A CN 106474839A
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CN
China
Prior art keywords
screen pack
value
service efficiency
sides
air
Prior art date
Application number
CN201510551117.3A
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Chinese (zh)
Inventor
李趫
李庆
高砚佳
Original Assignee
博世(上海)智能科技有限公司
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Application filed by 博世(上海)智能科技有限公司 filed Critical 博世(上海)智能科技有限公司
Priority to CN201510551117.3A priority Critical patent/CN106474839A/en
Publication of CN106474839A publication Critical patent/CN106474839A/en

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Abstract

The present invention provides a kind of method for obtaining the screen pack service efficiency value for air purifier, including:Measure the atmospheric pressure value of the screen pack both sides;Calculate the air pressure difference of the screen pack both sides;The service efficiency value of the screen pack is obtained according to the air pressure difference in default database.The present invention also provides a kind of corresponding device, including:Baroceptor, for measuring the atmospheric pressure value of the screen pack both sides;Database, for recording the corresponding relation of the air pressure difference of the screen pack both sides and the service efficiency value of the screen pack;Data processing module, the atmospheric pressure value for being measured according to the baroceptor calculate the air pressure value difference of the screen pack both sides, and obtain the corresponding screen pack service efficiency value of the air pressure difference of the screen pack both sides in the database.The method and device of the service efficiency value of screen pack is obtained by the present invention, can accurately be judged the use state of screen pack, be reached the purpose at utmost using filter screen of air purifier.

Description

Obtain method, device and its air purifier of screen pack service efficiency value

Technical field

The present invention relates to air purifier control field, in particular it relates to the mistake for air purifier The acquisition methods of the service efficiency value of filter screen, device and air purifier.

Background technology

Air purifier is the device for referring to adsorb, decompose or convert various air pollutants.Empty Gas purifier generally comprises the air sensing of screen pack, blower fan, processor and sensing air purity Device.The operation principle of air purifier is as follows:Air borne sensor sensing air purity is simultaneously transmitted corresponding Signal is to the processor of air purifier;Processor goes out to play optimum filtration according to the signal of change The rotation speed of fan of effect, and an automatically controlled signal control fan leaf is produced in corresponding rotational speed; Blower fan is rotated and for the air in air to blow to screen pack, air through filter screen filtration, by air In various pollutants remove or absorption after send the new air of cleaning.With the increase of working time, Contaminant particle on screen pack builds up, and therefore after work a period of time, needs to change Filter screen is to ensure the working effect of air purifier.

In prior art, the method for calculating screen pack use time is continuing for the simple screen pack that adds up Use time (i.e. history use time), when the lasting use time of screen pack is equal to or more than factory During the service life of the preset screen pack of business, it is necessary to change screen pack.

The side of the screen pack service life that the lasting use time according only to screen pack of prior art judges Method can not accurately judge that out the situation that screen pack is used, for example:The default service life of screen pack For 12 months, under the relatively low environment of air purity, using frequently, blower fan turns air purifier Speed is higher, and the service life of screen pack is often arrived 12 months in this case.Equally, in sky Under the higher environment of gas cleanliness factor, the life-span that screen pack is used may be more than 12 months.Therefore existing There is the method that screen pack service life is judged in technology maximally utilise screen pack, cause to make Filter screen filtration ability is become to waste, or the problem of screen pack satiety failure.

Content of the invention

In order to solve problem above, the invention provides a kind of screen pack obtained for air purifier Service efficiency value method, the effective use state of screen pack can be obtained by this method, most Big degree utilizes screen pack.This method includes:

Measure the atmospheric pressure value of the screen pack both sides;Calculate the air pressure difference of the screen pack both sides;

The service efficiency value of the screen pack is obtained according to the air pressure difference in default database.

Preferably, the use of the screen pack is obtained in default database according to the air pressure difference Efficiency value includes:

Judge whether the air pressure difference reaches preset value, when the air pressure difference reaches preset value, Screen pack service efficiency value is obtained in default database.

Preferably, the atmospheric pressure value of the screen pack both sides is measured;Calculate the air pressure of the screen pack both sides Before difference, further include:

The running time of the screen pack is obtained, judges that the running time of the screen pack is No reach preset value;When the running time of the screen pack reaches preset value, the mistake is measured The atmospheric pressure value of filter screen both sides, calculates the air pressure difference of the screen pack both sides.

Preferably, the running time of the screen pack is obtained, judges the actual work of the screen pack Make whether the time reaches preset value;When the running time of the screen pack reaches preset value, enter One step includes:

Air quality information of the measurement after the filter screen filtration, judges whether air quality closes Lattice;Be judged as underproof in the case of, measure the atmospheric pressure value of the screen pack both sides, calculate described The air pressure difference of screen pack both sides.

Preferably, when the screen pack service efficiency value meets or exceeds preset value, user is pointed out more Change the screen pack.

In terms of another according to embodiments of the present invention, additionally provide one kind and obtain for air cleaning The device of the screen pack service efficiency value of device, including:

Baroceptor, for measuring the atmospheric pressure value of the screen pack both sides;

Database, for recording the air pressure difference of the screen pack both sides with the screen pack using effect The corresponding relation of rate value;

Data processing module, the atmospheric pressure value for being measured according to the baroceptor calculate the filtration The air pressure value difference of net both sides, and obtain the air pressure difference pair of the screen pack both sides in the database The screen pack service efficiency value that answers.

Preferably, further include:

Screen pack work timer, for the running time of record filtering net;

Data judge module, for judging the reality of the screen pack of screen pack work timer record Whether the working time reaches preset value, and when the running time of screen pack reaches preset value, The data processing module calculates the screen pack both sides according to the atmospheric pressure value that the baroceptor is measured Air pressure value difference, and obtain the corresponding mistake of the air pressure difference of the screen pack both sides in the database Filter screen service efficiency value.

Preferably, further include:

Air mass sensor, for air quality information of the measurement after the filter screen filtration;

Data judge module, for judging the reality of the screen pack of screen pack work timer record Whether the working time reaches preset value, and when the running time of screen pack reaches preset value, Judge whether the air quality information that the air mass sensor is measured is qualified;When the sky When gas quality information is unqualified, the data processing module is according to the baroceptor (103) The atmospheric pressure value of measurement calculates the air pressure value difference of the screen pack both sides, and obtains institute in the database State the corresponding screen pack service efficiency value of air pressure difference of screen pack both sides.

Preferably, further include:Reminding module (106), for when the use of the screen pack When efficiency is higher than preset value, user is pointed out to change the screen pack.

In terms of another according to embodiments of the present invention, a kind of air purifier is additionally provided, including The above-described device obtained for the screen pack service efficiency value in air purifier.

By the service efficiency value for obtaining the screen pack for air purifier provided in an embodiment of the present invention Method, device and air purifier, according to measured air quality, screen pack working time And the air pressure difference of screen pack both sides, the service efficiency value of screen pack is obtained, and prompting is changed accordingly Filter screen.Thus reach at utmost using filter screen of air purifier, saved customer using cost.

Description of the drawings

In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be right Needed for embodiment or description of the prior art, accompanying drawing to be used is briefly described, it should be apparent that, Drawings in the following description are only some embodiments of the present invention, for those of ordinary skill in the art For, on the premise of not paying creative work, can also be obtained according to these accompanying drawings other attached Figure.

Fig. 1 be screen pack both sides draught head according to embodiments of the present invention with screen pack service efficiency value it Between corresponding relation schematic diagram;

Fig. 2 is the screen pack use effect judged for air purifier according to an embodiment of the invention The method flow diagram of rate value;

Fig. 3 is that judgement according to a different embodiment is made for the screen pack of air purifier Method flow diagram with efficiency value;

Fig. 4 is the screen pack use effect judged for air purifier according to an embodiment of the invention The apparatus structure schematic diagram of rate value;

Fig. 5 is that judgement according to a different embodiment is made for the screen pack of air purifier Apparatus structure schematic diagram with efficiency value;

Fig. 6 is that judgement according to a different embodiment is made for the screen pack of air purifier Apparatus structure schematic diagram with efficiency value.

Specific embodiment

By describing technology contents, structural feature, the purpose that realizes and the technology effect of the present invention in detail Really, below by way of specific embodiment and combine accompanying drawing and be described in further details.

Screen pack service efficiency value can be to cause as contaminant particle is accumulated inside measures filtration net Whether blocking has had influence on the using effect of filter screen.Due to contaminant particle accumulation on screen pack The blocking for causing, can cause the draught head of the air-flow by screen pack to produce significant change.For sky The service efficiency value (PE) of the screen pack of gas purifier between screen pack draught head (DP) corresponding Relation is as shown in Figure 1.Specifically, the relation of variable is represented with below equation:

PE=f (DP, L, F, E);Wherein:

L represents the structural parameters determined by filter screen structure;

F represents the flow parameter determined by the mean speed of fan;

E represents ambient parameter.

In addition, can also have other parameters for needing consideration according to specific application scenario.In air-flow Before filter screen filtration, and screen pack both sides air pressure difference DP after the filter screen filtration Bigger, the blocking that representative is caused due to contaminant particle is increasing, has had influence on the filtration of screen pack Effect, the service efficiency PE value in turn resulting in screen pack reduce.As shown in figure 1, through in the The draught head DP1 of the air-flow of the screen pack both sides of one working condition is less than in work two-state The mistake under the first working condition corresponding to draught head DP2, the DP1 of the air-flow of screen pack both sides Service efficiency value PE1 of filter screen be higher than in the second working condition under screen pack service efficiency value DP2.Therefore the draught head of the air-flow by screen pack both sides is measured, it is possible to obtain corresponding screen pack Service efficiency, and then the working condition of measures filtration net.

One embodiment with reference to disclosed in Fig. 2, is to judge to use for the screen pack of air purifier The method of efficiency value, the method are specifically included:

S1:The atmospheric pressure value of the screen pack both sides in measurement air purifier;And calculate the screen pack two The air pressure difference of side;Preferably, the atmospheric pressure value that can be obtained for measurement averages process and obtains Mean value.For example:By corresponding control system, adjust sample frequency data and rate mode is removed, real Existing handling averagely.Preferably, it is possible to achieve per 10 minutes, sampling once, was then done per 24 hours Once average.Preferably, atmospheric pressure value can be dynamic pressure value, or static pressure.

S2:According to the air pressure difference obtained by calculating, in default database, search and obtain correspondence Screen pack service efficiency value.Specifically, by contrasting air pressure of the air-flow through both sides before and after screen pack Difference, can obtain the atmospheric pressure lost caused due to the presence of filter screen.Default database purchase gas The service efficiency value of the corresponding screen pack of pressure difference.Screen pack service efficiency value can be with measures filtration net Whether the blocking that portion is caused due to particle accumulation has had influence on the service efficiency of filter screen;Under for example Table:

Air pressure difference (pa) Screen pack service efficiency value 25 98% 50 95% 120 80% 150 70% 200 50%

When the air pressure difference of screen pack both sides is increasing, corresponding screen pack service efficiency persistently drops Low.Alternatively, before corresponding screen pack service efficiency value is obtained according to air pressure difference, also judge Whether the air pressure difference of the screen pack both sides reaches preset value;I.e. when the air pressure of the screen pack both sides When difference reaches default value, corresponding screen pack service efficiency value is obtained in presetting database.Example If default air pressure difference is 200pa, when calculating screen pack both sides air pressure difference more than 200pa When, start to search and obtain corresponding screen pack service efficiency value in presetting database.

Fig. 3 is the another of the method for screen pack effective storage life in a kind of judgement air purifier of the present invention One embodiment.In order to accurately judge whether the screen pack for air purifier is close to service life, Before the service efficiency value for obtaining screen pack, the time used of screen pack is first judged and through filtering The air quality of net filtration, the method for the present embodiment are comprised the following steps:

S1’:Obtain the time used of screen pack;

S2’:Judge whether the running time of the screen pack reaches preset value;Judging In the case of reaching the preset value, alternatively, also include:

S3’:Obtain the air quality information through filter screen filtration;

S4’:Judge whether preset value is less than through the air quality of filter screen filtration;

S5’:When the air quality through filter screen filtration is less than preset value, according to calculated The air pressure difference of both sides before and after screen pack;

S6’:Alternatively, also judge whether the air pressure difference of the screen pack both sides reaches preset value;

S7’:When the air pressure difference of the screen pack both sides reaches default value, in default data The service efficiency value of corresponding screen pack is searched and is obtained in storehouse;Alternatively, this method also includes:

S8’:When the service efficiency value of screen pack is up to or over default service efficiency value, carry Show replacing screen pack.Now judge that the use state of screen pack has reached at full capacity, and be close to make Use the life-span.Therefore according to service efficiency value and the default threshold value result of the comparison of screen pack, work as filtration The service efficiency value of net is in up to or in the state of during default service efficiency value, is pointed out more Change filter screen.For example, it is assumed that screen pack air pressure difference set in advance (needs to change the reference of filter screen Air pressure difference) it is 200pa, and the pressure differential of brand-new filter screen is 10pa.In practical application, such as The filter screen draught head mean value of fruit measurement is 120pa, and its value is not then pointed out to change filter less than 200pa Net;If the filter screen pressure differential mean value of measurement is 220pa, more than reference value 200pa, therefore carry Show replacing filter screen.

Before screen pack service efficiency is obtained according to screen pack both sides air pressure difference, first determine whether to filter The time used of net and the air quality after filter screen filtration, more can accurately judge that The service condition of screen pack.

Fig. 3 is the dress of the acquisition for the screen pack service efficiency value of air purifier of the embodiment of the present invention Put, the device includes:

Baroceptor 101, for measuring the air pressure of the screen pack both sides;Specifically, screen pack Before be provided with the first baroceptor, to adopting through the air-flow gross pressure of filter screen filtration Sample, obtains the first atmospheric pressure value;The second baroceptor is provided with after screen pack, to through screen pack mistake Air-flow after filter carries out sampling and obtains the second atmospheric pressure value.Preferably, the first baroceptor and the second gas Pressure sensor is high-precision pressure sensor;Database 105, for storing the screen pack both sides Corresponding relation between the service efficiency value of air pressure difference and the screen pack;Data processing module 104, for the first air pressure obtained according to measured by the first baroceptor, the second baroceptor Value and the second atmospheric pressure value calculate the air pressure value difference of the screen pack both sides;And obtain in the database The corresponding screen pack service efficiency value of the air pressure difference of the screen pack both sides.

Alternatively, the device also includes:

Screen pack work timer 102, for the running time of record filtering net.Data judge Module 107, for judging the real work of the screen pack of the screen pack work record of timer 102 Whether the time reaches preset value, and when the running time of screen pack reaches preset value, described Data processing module 104 calculates the screen pack according to the atmospheric pressure value that the baroceptor 103 is measured The air pressure value difference of both sides, and the air pressure difference of the screen pack both sides is obtained in the database 105 Corresponding screen pack service efficiency value;

In order to more accurately judge the service condition of screen pack, can also add after filter screen filtration This factor of judgment of air quality, that is, obtain the dress of the screen pack service efficiency value for air purifier Putting also includes:Air mass sensor 103, the air mass sensor are generally arranged at screen pack Afterwards, the air quality information for measurement after the filter screen filtration.Data judge module 107 Judge the screen pack work timer 102 record screen pack running time whether reach pre- If value, and when the running time of screen pack reaches preset value, continue to judge the air matter Whether the air quality information that quantity sensor 103 is measured is qualified;When the air quality information For unqualified when, the air pressure that the data processing module 104 is measured according to the baroceptor 103 Value calculates the air pressure value difference of the screen pack both sides, and obtains the filtration in the database 105 The corresponding screen pack service efficiency value of air pressure difference of net both sides.

Alternatively, the device for obtaining the screen pack service efficiency value for air purifier also includes:Carry Show module 106, for when the service efficiency value of the screen pack is higher than preset value, pointing out user more Change the screen pack.

Fig. 5 and Fig. 6 are the screen pack of the embodiment of the present invention and centrifugal fan the combines field for using Scape.The second baroceptor being arranged on rear side of the first baroceptor and screen pack on front side of screen pack It is preferably disposed in the airflow path by effective screen area of screen pack.Wherein effective filtering net surface Product refers to, during filter screen filtration, be crossed the filtration mesh portions that air filtering can be passed through.Namely It is to play the filter screen part for effectively filtering left and right.Preferably, first gas pressure sensor is set Put to obtain best measurement effect in the geometric center of effective screen area.

As shown in fig. 6, specifically including:Screen pack 201, screen pack shell 202, centrifugal fan Flabellum 203, centrifugal fan housing 204.The flabellum 203 of centrifugal fan is located at screen pack 201 underface, in the effective area such as Fig. 6 of screen pack shown in dotted line position.Due to centrifugal wind The air inlet of machine is relatively small, in order to realize the effectively utilizes to area of filter net size, can be in mistake A boss is set up on filter screen shell 202 so that between screen pack 201 and screen pack housing 202 There is a gap, so that more screen area is effectively utilized.First air pressure Sensor be arranged on through the air-flow air inlet duct of the effective filtration area of screen pack in optional position, excellent Selection of land, as illustrated, the first baroceptor 205 can be arranged in the geometry of effective screen area In the heart, will be through the atmospheric pressure value of the air-flow of filter screen filtration for measurement;Second baroceptor In 206 air flow duct for being arranged on centrifugal fan air outlet, for measurement after filter screen filtration Atmospheric pressure value.

In sum, using the method for the service efficiency value of the acquisition screen pack of the embodiment of the present invention, dress Put, can efficiently and accurately judge use state and the life-span of screen pack, so as to the time when closing Prompting user changes screen pack, to ensure the normally and efficiently use of air purifier.

Obviously, those skilled in the art can carry out various changes and modification to embodiments of the invention Without departing from the spirit and scope of the present invention.So, if these modifications and modification belong to the present invention's Within the scope of claim and its equivalent technologies, then the present invention is also intended to comprising these changes and modification Including.

Claims (10)

1. a kind of method for obtaining the screen pack service efficiency value for air purifier, its feature exist In, including:
Measure the atmospheric pressure value of the screen pack both sides;Calculate the air pressure difference of the screen pack both sides;
The service efficiency value of the screen pack is obtained according to the air pressure difference in default database.
2. the screen pack service efficiency value obtained for air purifier according to claim 1 Method, it is characterised in that the filtration is obtained according to the air pressure difference in default database The service efficiency value of net includes:
Judge whether the air pressure difference reaches preset value, when the air pressure difference reaches preset value, Screen pack service efficiency value is obtained in default database.
3. the screen pack service efficiency value obtained for air purifier according to claim 2 Method, it is characterised in that the atmospheric pressure value of the measurement screen pack both sides;Calculate the screen pack two Before the air pressure difference of side, further include:
The running time of the screen pack is obtained, judges that the running time of the screen pack is No reach preset value;When the running time of the screen pack reaches preset value, the mistake is measured The atmospheric pressure value of filter screen both sides, calculates the air pressure difference of the screen pack both sides.
4. the screen pack service efficiency value obtained for air purifier according to claim 3 Method, it is characterised in that obtain the running time of the screen pack, judge the screen pack Running time whether reach preset value;Reach in the running time of the screen pack default During value, further include:
Air quality information of the measurement after the filter screen filtration, judges whether air quality closes Lattice;Be judged as underproof in the case of, measure the atmospheric pressure value of the screen pack both sides, calculate described The air pressure difference of screen pack both sides.
5. the acquisition according to Claims 1-4 any one is for the filtration of air purifier The method of net service efficiency value, it is characterised in that when the screen pack service efficiency value meets or exceeds During preset value, user is pointed out to change the screen pack.
6. a kind of device for obtaining the screen pack service efficiency value for air purifier, its feature exist In, including:
Baroceptor (103), for measuring the atmospheric pressure value of the screen pack both sides;
Database (105), for recording the air pressure difference of the screen pack both sides and the screen pack Service efficiency value corresponding relation;
Data processing module (104), for the air pressure measured according to the baroceptor (103) Value calculates the air pressure value difference of the screen pack both sides, and obtains in the database (105) described The corresponding screen pack service efficiency value of the air pressure difference of screen pack both sides.
7. the screen pack service efficiency value obtained for air purifier according to claim 6 Device, it is characterised in that further include:
Screen pack work timer (102), for the running time of record filtering net;
Data judge module (107), for judging screen pack work timer (102) record The running time of screen pack whether reach preset value, and the running time when screen pack When reaching preset value, data processing module (104) are surveyed according to the baroceptor (103) The atmospheric pressure value of amount calculates the air pressure value difference of the screen pack both sides, and in the database (105) Obtain the corresponding screen pack service efficiency value of air pressure difference of the screen pack both sides.
8. the screen pack service efficiency value obtained for air purifier according to claim 6 Device, it is characterised in that further include:
Air mass sensor (103), for air matter of the measurement after the filter screen filtration Amount information;
Data judge module (107), for judging screen pack work timer (102) record The running time of screen pack whether reach preset value, and the running time when screen pack When preset value is reached, the air quality that the air mass sensor (103) is measured is judged Whether information is qualified;When the air quality information is unqualified, the data processing module (104) the screen pack both sides are calculated according to the atmospheric pressure value that the baroceptor (103) is measured Air pressure value difference, and the air pressure difference pair of the screen pack both sides is obtained in the database (105) The screen pack service efficiency value that answers.
9. the acquisition according to claim 6 to 8 any one is for the filtration of air purifier The device of net service efficiency value, it is characterised in that further include:Reminding module (106), uses In when the service efficiency of the screen pack is higher than preset value, user is pointed out to change the screen pack.
10. a kind of air purifier, it is characterised in that be used for including the acquisition described in claim 9 The device of the screen pack service efficiency value in air purifier.
CN201510551117.3A 2015-09-01 2015-09-01 Obtain method, device and its air purifier of screen pack service efficiency value CN106474839A (en)

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CN107158814A (en) * 2017-05-16 2017-09-15 广东美的环境电器制造有限公司 The method and air purifier of a kind of strainer filtering efficient state prompting
CN107589057A (en) * 2017-09-19 2018-01-16 天钥光电(湖北)股份有限公司 A kind of air pressure detection method and air filter screen life detecting method
CN108361916A (en) * 2018-01-09 2018-08-03 深圳市飓风智云科技有限公司 The real-time air duct filter net jam deciding degree system and method for intelligence
WO2018214091A1 (en) * 2017-05-22 2018-11-29 邹剑寒 Air purifier
CN108361916B (en) * 2018-01-09 2020-06-19 深圳市飓风智云科技有限公司 Intelligent real-time air duct filter screen blockage degree judging system and method

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CN104330329A (en) * 2014-11-07 2015-02-04 广东好帮手电子科技股份有限公司 Method and device for monitoring loss degree of filter material of air purifier
CN104524896A (en) * 2014-12-29 2015-04-22 东莞市宇洁新材料有限公司 Indoor air purification device and method capable of detecting service life of particulate filter
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CN103574838A (en) * 2012-08-08 2014-02-12 北京动力源科技股份有限公司 Method and device for warning about filth blockage of filter net of fresh air conditioner of machine room
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Publication number Priority date Publication date Assignee Title
CN107158814A (en) * 2017-05-16 2017-09-15 广东美的环境电器制造有限公司 The method and air purifier of a kind of strainer filtering efficient state prompting
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CN108361916A (en) * 2018-01-09 2018-08-03 深圳市飓风智云科技有限公司 The real-time air duct filter net jam deciding degree system and method for intelligence
CN108361916B (en) * 2018-01-09 2020-06-19 深圳市飓风智云科技有限公司 Intelligent real-time air duct filter screen blockage degree judging system and method

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