JPH0790147B2 - Filter replacement time determination device - Google Patents
Filter replacement time determination deviceInfo
- Publication number
- JPH0790147B2 JPH0790147B2 JP2001282A JP128290A JPH0790147B2 JP H0790147 B2 JPH0790147 B2 JP H0790147B2 JP 2001282 A JP2001282 A JP 2001282A JP 128290 A JP128290 A JP 128290A JP H0790147 B2 JPH0790147 B2 JP H0790147B2
- Authority
- JP
- Japan
- Prior art keywords
- gas
- filter
- amount
- anemometer
- determination device
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Description
【発明の詳細な説明】 ［産業上の利用分野］ 本発明は、脱臭フィルター等のフィルター劣化に応じて
最適なフィルター交換時期を表示するフィルター交換時
期判別装置に関する。Description: TECHNICAL FIELD The present invention relates to a filter replacement timing determination device that displays an optimum filter replacement timing according to filter deterioration of a deodorizing filter or the like.
［従来の技術］ 従来、脱臭フィルター等のフィルター交換を行なうにあ
たって、フィルターによる除去ガスの分子の量を工学的
に検出し、フィルターの劣化を定量的に判断する装置が
なかった。[Prior Art] Conventionally, when exchanging a filter such as a deodorizing filter, there has been no device for quantitatively determining deterioration of the filter by engineeringly detecting the amount of molecules of the gas removed by the filter.
このため、人の臭覚や経験に基づいて得られたフィルタ
ーの使用限界時間等により、そのフィルターの交換時期
を判断し、定期的にフィルター交換を行なっている。For this reason, the time to replace the filter is determined based on the user's sense of smell and the time limit of use of the filter obtained based on experience, and the filter is regularly replaced.
［発明が解決しようとする課題］ 従来の技術で述べた人の臭覚によってフィルター劣化の
判断を行なう場合、その判断にバラツキが生じるので、
使用されているフィルターの性能が不安定になるという
問題がある。[Problems to be Solved by the Invention] When the judgment of the filter deterioration is made according to the human sense of smell as described in the prior art, the judgment may vary.
There is a problem that the performance of the filter used becomes unstable.
また使用時間等から定期的にフィルター交換を行う場合
では、その使用状態によってフィルターの早期劣化が生
じても定められた時期までフィルター交換がされないま
ま放置されているという問題がある。Further, when the filter is regularly replaced from the time of use, there is a problem that the filter is left without being replaced until a predetermined time even if the filter deteriorates early depending on the usage state.
本発明は、これらの問題を解決するものであり、フィル
ターの劣化度合を定量的に把握し、最適なフィルター交
換時期を表示するフィルター交換時期判別装置を提供す
る。The present invention solves these problems, and provides a filter replacement time determination device that quantitatively grasps the degree of deterioration of a filter and displays the optimum filter replacement time.
［課題を解決するための手段］ 本発明のフィルター交換時期判別装置は、気体に含有し
た不用ガスを除去するフィルターの気体流入側に、不用
ガス分子濃度を検知する第１ガスセンサーを設け、同フ
ィルターの気体流出側には、前記同様の第２ガスセンサ
ー及び流通気体の速度を計測する風速計を設け、第１と
第２のガスセンサー風速計の各出力端子をコンピュータ
の入力端子へ接続し、コンピュータはフィルターの流通
面積と、風速計からの入力信号に基づく風速との積から
フィルターの処理風量を算出するとともに、前記処理風
量と前記両ガスセンサーからの入力信号に基づく濃度と
からフィルターに捕捉したガス量を積算して出力するよ
うに設定したものである。[Means for Solving the Problems] The filter replacement timing determination device of the present invention is provided with a first gas sensor for detecting the concentration of unnecessary gas molecules on the gas inflow side of the filter for removing the unnecessary gas contained in the gas. On the gas outflow side of the filter, a second gas sensor similar to the above and an anemometer for measuring the velocity of the flowing gas are provided, and the output terminals of the first and second gas sensor anemometers are connected to the input terminals of the computer. , The computer calculates the processing air volume of the filter from the product of the flow area of the filter and the wind speed based on the input signal from the anemometer, and the filter from the processing air volume and the concentration based on the input signals from both gas sensors. It is set so that the amount of captured gas is integrated and output.
また、フィルター交換時期の表示手段としては、コンピ
ュータに比較演算部を設け、フィルターが捕捉したガス
量と限界除去ガス量とを比較判断し、フィルターが捕捉
したガス量が限界除去ガス量以下の際、コンピュータか
ら表示器へ信号を出力するように構成する。Further, as a means for displaying the filter replacement time, a computer is provided with a comparison calculation unit to compare and judge the amount of gas captured by the filter and the limit removal gas amount, and when the amount of gas captured by the filter is equal to or less than the limit removal gas amount. , A signal is output from the computer to the display.
［作用］ 上記のフィルター交換時期判別装置は、送風機等でフィ
ルターに外気等を通過させると、第１、第２ガスセンサ
ーにより、フィルター通過前後の不用ガスの分子濃度が
検出され、風速計により流通気体の速度値が計測され、
この検出値と速度値がコンピュータに読み取られて処理
される。[Operation] When the outside air or the like is passed through the filter by a blower or the like, the filter replacement timing determination device detects the molecular concentration of the unwanted gas before and after passing through the filter by the first and second gas sensors, and distributes it by the anemometer. The velocity value of the gas is measured,
The detected value and the speed value are read by a computer and processed.
コンピュータによる処理は、流通前後のガス分子濃度の
差と風量とを積算してフィルターが捕捉した全ガス量を
算出し、この捕捉ガス量の算出値と、フィルターの劣化
が生じる限界除去ガス量との大小が比較判断される。そ
して算出値が限界除去ガス量以下になった際、フィルタ
ー交換時期を表示器で表示するようにコンピュータから
信号が送られる。The computer process calculates the total amount of gas captured by the filter by integrating the difference between the gas molecule concentration before and after the distribution and the air volume, and the calculated value of this captured gas volume, and the amount of the limit removal gas that causes deterioration of the filter. The size of is compared and judged. Then, when the calculated value becomes equal to or less than the limit removal gas amount, a signal is sent from the computer to display the filter replacement time on the display.
［実施例］ 以下、本発明のフィルター交換時期判別装置の一実施例
を図を使用して説明する。[Embodiment] An embodiment of the filter replacement timing determination device of the present invention will be described below with reference to the drawings.
フィルター交換時期判別装置は、外気に含有する臭気を
除去するため、外気取り入れ口に装着する脱臭フィルタ
ーの交換時期を判別するものである。この脱臭フィルタ
ー１は、外気の流通路２に設けられ、流通する外気を残
らずこのフィルター１に通過させるように流通路２に対
して気密に取付けられる。The filter replacement time determination device determines the replacement time of the deodorizing filter attached to the outside air intake in order to remove the odor contained in the outside air. The deodorizing filter 1 is provided in a flow passage 2 for the outside air, and is attached to the flow passage 2 in an airtight manner so that all the outside air flowing therethrough passes through the filter 1.
フィルター１を通過する前の外気流入側の流通路2aに
は、臭気ガスの分子濃度を検出する第１ガスセンサー３
が設けられ、フィルター１に対して逆側の外気流出側に
流通路2bには、流入側と同様の第２ガスセンサー４及び
フィルター１を通過する外気の速度を計測する風速計５
が設けられている。なお、ガスセンサーとしては半導体
ガスセンサーを用いるが、これに限定するものではな
い。The first gas sensor 3 for detecting the molecular concentration of the odorous gas is provided in the flow passage 2a on the outside air inflow side before passing through the filter 1.
Is provided, and an anemometer 5 for measuring the velocity of the outside air passing through the second gas sensor 4 and the filter 1 similar to the inflow side is provided in the flow passage 2b on the outside air outflow side opposite to the filter 1.
Is provided. A semiconductor gas sensor is used as the gas sensor, but the gas sensor is not limited to this.
そして、流出側には送風機６が取付けられ、外気が流通
路２内のフィルター１を介して取り入れられるようにな
っている。A blower 6 is attached to the outflow side so that the outside air can be taken in through the filter 1 in the flow passage 2.
第１、第２ガスセンサー3,4と風速計５の各出力端子
は、アナログ−デジタル変換器７を介してマイクロコン
ピュータ８の入力端子に接続され、フィルター１の交換
時期を知らせる表示器９がマイクロコンピュータ８の出
力端子に接続されている。マイクロコンピュータ８は、
第１ガスセンサーにより検出された不用ガス分子濃度Ci
と第２ガスセンサーにより検出された不用ガス分子濃度
Coとの差を算出する。The output terminals of the first and second gas sensors 3 and 4 and the anemometer 5 are connected to the input terminals of the microcomputer 8 through the analog-digital converter 7, and the display 9 for notifying the replacement time of the filter 1 is provided. It is connected to the output terminal of the microcomputer 8. The microcomputer 8
Unnecessary gas molecule concentration C i detected by the first gas sensor
And unnecessary gas molecule concentration detected by the second gas sensor
Calculate the difference from C o .
また、マイクロコンピュータ８は外気がフィルター１を
通過する単位時間の処理風量Ｑを、風速計５の検出値と
流通面積との関係から算出し、さらにフィルター１によ
って捕捉された除去臭気ガス量（Ｊ）を下記演算式に基
づき算出するようになっている。Further, the microcomputer 8 calculates the treated air volume Q per unit time when the outside air passes through the filter 1 from the relationship between the detected value of the anemometer 5 and the distribution area, and further, the removed odorous gas amount (J ) Is calculated based on the following arithmetic expression.
Ｊ＝Σ＝（Ci−Oo）Ｑ ……式 マイクロコンピュータ８は、比較演算部を有していて、
除去臭気ガス量（Ｊ）とフィルターが劣化する限界除去
臭気ガス量（Ｍ）とを比較判断し、除去臭気ガス量
（Ｊ）が限界除去臭気ガス量（Ｍ）以下になった際（Ｊ
≦Ｍ）、表示器９に信号を出力するようになっている。
表示器９では、マイクロコンピュータ８からの信号を受
けてフィルター１の交換時期を表示する。表示方法とし
て、例えば色の付いた電球を点滅させる。J = Σ = (C i −O o ) Q ... Formula The microcomputer 8 has a comparison operation part,
When the removed odor gas amount (J) is compared with the limit removed odor gas amount (M) that deteriorates the filter, and when the removed odor gas amount (J) becomes equal to or less than the limit removed odor gas amount (M) (J
≦ M), a signal is output to the display 9.
The display 9 receives a signal from the microcomputer 8 and displays the replacement time of the filter 1. As a display method, for example, a colored light bulb is made to blink.
［発明の効果］ 本発明のフィルター交換時期判別装置によれば、不用ガ
スの分子濃度及び気体の流速をガスセンサー及び風速計
により定量的に検出して、コンピュータで処理すること
により、フィルターが捕捉した除去臭気ガス量が把握さ
れる。このため、不用ガス量を直接的に測定することが
でき、より精度良く最適なフィルターの交換時期がわか
り、フィルターの性能が保証されるとともに、まだ使用
できるフィルターを無駄に交換するようなことがなくな
る。[Effect of the Invention] According to the filter replacement timing determination device of the present invention, the filter captures by quantitatively detecting the molecular concentration of the unnecessary gas and the flow velocity of the gas by the gas sensor and the anemometer, and processing by the computer. The amount of removed odorous gas is grasped. Therefore, it is possible to directly measure the amount of unnecessary gas, know more accurately and optimally when to replace the filter, guarantee the filter performance, and replace the filter that is still usable in vain. Disappear.
図は本発明のフィルター交換時期判別装置の一実施例の
構成を示す説明図である。 1;フィルター、2;流通路、3;第１ガスセンサー 4;第２ガスセンサー、5;風速計、6;送風機 7;アナログ−デジタル変換器 8;マイクロコンピュータ、9;表示器FIG. 1 is an explanatory diagram showing the configuration of an embodiment of the filter replacement timing determination device of the present invention. 1; filter, 2; flow passage, 3; first gas sensor 4; second gas sensor, 5; anemometer, 6; blower 7; analog-digital converter 8; microcomputer, 9; indicator
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.6 識別記号 庁内整理番号 ＦＩ 技術表示箇所 Ｂ０１Ｄ 53/81 ＺＡＢ ─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. 6 Identification code Office reference number FI technical display location B01D 53/81 ZAB
Claims (2)
ターの気体流入側に、不用ガス分子濃度を検知する第１
ガスセンサーを設け、同フィルターの気体流出側には、
前記同様の第２ガスセンサー及び流通気体の速度を計測
する風速計を設け、第１と第２のガスセンサーと風速計
の各出力端子をコンピュータの入力端子へ接続し、コン
ピュータはフィルターの流通面積と、風速計からの入力
信号に基づく風速との積からフィルターの処理風量を算
出するとともに、前記処理風量と前記両ガスセンサーか
らの入力信号に基づく濃度とからフィルターに捕捉した
ガス量を積算して出力するように設定したことを特徴と
するフィルター交換時期判別装置。1. A first detector for detecting the concentration of unwanted gas molecules on the gas inflow side of a filter for removing the unwanted gas contained in the gas.
A gas sensor is provided, and on the gas outflow side of the filter,
A second gas sensor similar to the above and an anemometer for measuring the velocity of the flowing gas are provided, and the output terminals of the first and second gas sensors and the anemometer are connected to the input terminals of the computer. And, the processed air volume of the filter is calculated from the product of the wind speed based on the input signal from the anemometer, and the amount of gas captured by the filter is integrated from the processed air volume and the concentration based on the input signals from both gas sensors. A filter replacement time determination device characterized in that it is set to output as a filter.
ターが捕捉したガス量が限界除去ガス量以下の際に表示
器へ出力させるように構成した請求項１に記載のフィル
ター交換時期判別装置。2. The filter replacement timing discriminating device according to claim 1, wherein the computer is provided with a comparison operation unit, and when the amount of gas captured by the filter is less than or equal to the limit removal gas amount, it is output to the display.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001282A JPH0790147B2 (en) | 1990-01-08 | 1990-01-08 | Filter replacement time determination device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001282A JPH0790147B2 (en) | 1990-01-08 | 1990-01-08 | Filter replacement time determination device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03207425A JPH03207425A (en) | 1991-09-10 |
| JPH0790147B2 true JPH0790147B2 (en) | 1995-10-04 |
Family
ID=11497097
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001282A Expired - Fee Related JPH0790147B2 (en) | 1990-01-08 | 1990-01-08 | Filter replacement time determination device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0790147B2 (en) |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10106914A (en) * | 1996-09-30 | 1998-04-24 | Dainippon Screen Mfg Co Ltd | Life judging device of atmosphere treatment part for substrate treatment device |
| JPH11226341A (en) * | 1998-02-18 | 1999-08-24 | Ebara Corp | Method and apparatus for clarification of gas |
| JP3690262B2 (en) * | 2000-10-31 | 2005-08-31 | ダイキン工業株式会社 | Adsorption / desorption device |
| JP4942325B2 (en) * | 2005-10-27 | 2012-05-30 | 株式会社小松製作所 | Air purification device |
| CN105194777B (en) * | 2010-09-07 | 2018-06-29 | 耐斯特科技有限公司 | It is indicated for the remaining life of breathing mask cylinder and tank |
| EP2682162B1 (en) | 2011-02-28 | 2017-11-22 | Koken Ltd. | Air cleaner and method for predicting breakthrough time for same |
| DE202011108805U1 (en) | 2011-09-02 | 2012-09-03 | BLüCHER GMBH | wound dressing |
| CN105987820B (en) * | 2015-02-12 | 2019-06-04 | 苏州宝时得电动工具有限公司 | Air purifier purification device life-span prediction method and system |
| CN105029770B (en) * | 2015-07-31 | 2016-08-17 | 小米科技有限责任公司 | Intelligence mouth mask, the method for calculating pollutant adsorbance, intelligence mouth mask and device |
| CN105029769B (en) | 2015-07-31 | 2017-03-08 | 小米科技有限责任公司 | Intelligent mask, the method calculating pollutant adsorbance, intelligent mask and device |
| CN205090507U (en) | 2015-09-30 | 2016-03-16 | 飞利浦(中国)投资有限公司 | Air -purifying device |
| CN110573230B (en) | 2017-04-28 | 2022-09-06 | 3M创新有限公司 | Air filtration monitoring based on thermoelectric devices |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5524931A (en) * | 1978-08-08 | 1980-02-22 | Hitachi Metals Ltd | Tool steel for hot processing |
| JPS57195430U (en) * | 1981-06-05 | 1982-12-11 |
-
1990
- 1990-01-08 JP JP2001282A patent/JPH0790147B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH03207425A (en) | 1991-09-10 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| LAPS | Cancellation because of no payment of annual fees |