JPS59115929A - Clogging detector for air filter - Google Patents
Clogging detector for air filterInfo
- Publication number
- JPS59115929A JPS59115929A JP57223832A JP22383282A JPS59115929A JP S59115929 A JPS59115929 A JP S59115929A JP 57223832 A JP57223832 A JP 57223832A JP 22383282 A JP22383282 A JP 22383282A JP S59115929 A JPS59115929 A JP S59115929A
- Authority
- JP
- Japan
- Prior art keywords
- air
- air filter
- clogging
- pressure
- sensitive resistor
- 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.)
- Pending
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/28—Arrangement or mounting of filters
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Air Conditioning Control Device (AREA)
Abstract
Description
【発明の詳細な説明】
〔発明の利用分野〕
本発明は空気調和機用エアーフィルターの目詰りを検出
する方法に係り、検出器に風圧に応じて電気抵抗値が変
化する感圧抵抗体を利用することで、実用に好適なエア
ーフィルターの目詰り検出器に関するものである。[Detailed Description of the Invention] [Field of Application of the Invention] The present invention relates to a method for detecting clogging of an air filter for an air conditioner. The present invention relates to an air filter clogging detector that is suitable for practical use.
従来の空気調和機用エアーフィルターの目詰り検出器は
空気調和機に内蔵した送風機の運転時間を積算し、予め
定めた運転積算時間に達すると発光ダイオードなどによ
り空気調和機本体の前面パネルに表示している。エアー
フィルターの目詰りを送風機の実運転時間で予測し、１
」詰りを表示する方法である。最近空気調和機の運転制
御をマイクロコンピュータで行なう方式が多く、送風機
の運転時間を積算する方法は、送風機へ通電している商
用電源の周波数をカウントし、例えば１００時間になる
と目詰り表示の発光ダイオードを点灯させるようにして
いる。この従来の目詰り検出器は送風機の運転積算時間
を採用していたので、実際のフィルター目詰り状態を表
示するものではない。比較的清浄な空気で運転していて
１」詰りか無くても、１」詰り状態を表示するという欠
点のほかに、塵埃が多く１］詰りしていても設定時間に
ならないと１」詰り状態を表示しないことで、空気調和
機の運転効率が悪くなるという欠点があった。またマイ
クロコンピュータ−による制御にともない。Conventional air filter clogging detectors for air conditioners integrate the operating time of the blower built into the air conditioner, and when a predetermined cumulative operating time is reached, an indication is displayed on the front panel of the air conditioner using a light emitting diode, etc. are doing. Predict the clogging of the air filter based on the actual operating time of the blower, and
” is a way to indicate a blockage. Recently, many air conditioners are controlled by microcomputers, and the method of accumulating the operating time of the blower is to count the frequency of the commercial power supply that is energizing the blower, and when it reaches 100 hours, for example, a clogging indicator will be emitted. I am trying to turn on the diode. Since this conventional clogging detector uses the cumulative operation time of the blower, it does not indicate the actual state of filter clogging. In addition to the drawback that even if the air is operated with relatively clean air and there is no clogging, the 1) clogging status will be displayed, and even if there is a lot of dust and the air is clogged, the 1) clogging status will be displayed until the set time has elapsed. There was a drawback that the operation efficiency of the air conditioner deteriorated due to not displaying the information. In addition, it is controlled by a microcomputer.
周波数をカウントする方式であると停電毎あるいは主電
源を切る毎に運転積算時間はクリヤーされ目詰りしてい
るのに表示灯が点灯しないという欠点があった。If the frequency is counted, the accumulated operating time is cleared each time there is a power outage or the main power is turned off, and the indicator light does not light up even if the system is clogged.
本発明は、上記欠点を改善するためになされたものであ
る。本発明の目的はエアーフィルターの目詰りによる風
量変化を風圧の変化として直接検出てきるようにした目
詰り検出器を提供すること（とおる。The present invention has been made to improve the above-mentioned drawbacks. An object of the present invention is to provide a clogging detector that can directly detect changes in air volume due to clogging of an air filter as changes in air pressure.
本発明は、風量変化にともなう風圧変化で風船玉のよう
に成形した感圧抵抗体の電気抵抗値が変化することに着
目し、エアーフィルターの風下で空気調和機内部に前記
感圧抵抗体を袋状に構成したことである。The present invention focuses on the fact that the electrical resistance value of a pressure-sensitive resistor shaped like a balloon changes due to changes in wind pressure accompanying changes in air volume. It is constructed in a bag shape.
以下本発明の一実施例を第１図、第２図により説明する
。■は空気調和機のユニッ）・、２はユニット１に装着
したエアーフィルター、３は熱交換器４は送風用ファン
である。ファン４の回転にともない空気はエアーフィル
ター２を通過後、熱交換器ｌを通り、ユニット１の前面
下部より吐出される。５は目詰り検出器であり、フィル
ター２の風下に配設し、ユニット１に固定する。目詰り
検出器５の構成は第２図に示すようにリング状の絶縁材
６の外周に電極７ａ、７ｂを埋込みその外側に袋状に成
形した感圧抵抗体８を覆せ、電極のある部分は絶縁材で
成形したバンド９を設け、感圧抵抗体と電極７ａ、７ｂ
を固定する。リング状の絶縁材６はユニット１の一部で
フィルター２の風下でかつ開１］ ；ＮＢが風のくる方
向になるように固定する。１０は電極７ａ、７ｂからの
電気信号を取出すリード線である。以上のように構成し
た本実施例の作用を説明すると、感圧抵抗体８は伸縮性
のあるゴム材をベースにして、ゴム材にカーボンを分散
させ成Ｉホさせる。エアーフィルター２を通過した空気
の風量が多く、風圧が高いときは袋状に成形した感圧抵
抗体８が風船のようにふくらみ、内部に分散させたカー
ボンの連鎖が粗くなり電気抵抗値は増大する。逆にエア
ーフィルター２が目詰りを起こし風量が減少すると風圧
が下り、感圧抵抗体８で成形した風船はしぼんで、内部
に分散させたカーボンの連鎖が密になり、゛電気抵抗値
はＭ少するのて、風量上ンサの作用をなす。風量と電気
抵抗値の関係は第３図に示すようになる。第３図のＡ、
Ｂ、Ｃは送風用ファン４の回転数変化にともなう特性で
Ａは強風運転、Ｂは弱風運転、Ｃは微風運転を行なった
場合を示す。送風機の強弱、微は任意に可変できるよう
に操作するので、感圧抵抗体８からの電気信号の処理に
ついて次に述べる。感圧抵抗体８の電気信号１０ａ、１
０１）は第４図の回路図に示すように接続する。エアー
フィルター２が目詰りを生したとき、感圧抵抗体８の電
気抵抗値は強風運転のとき大きく弱風、微風の順に小さ
くなる。目詰りを生じると第４図に示す１００点の電位
が上るので各運転状態で設定値以上に上ったとき目詰り
を生じた信号を出せるようにした。コンパレータ１１の
基準電位を送風機の強弱運転切換スイッチ（図示せず）
と連動させる。強風運転のときはスイ・ンチＳ１を閉じ
動作レベルを高（する、弱風運転ではＳＩを開放しスイ
ッチＳ２を閉じることで動作レベルを強風運転より下げ
、また微風運転ではＳＩ 、Ｓ２ とも開放し動作レベ
ルを弱風運転より下げる。それぞれの動作レベルをこえ
たときマイクロコンピュータ１２へ信号を伝達し、ドラ
イバー１３を介して、目詰り表示灯１４を点灯させ、目
詰り状態にあることをユーザに知らせることができる。An embodiment of the present invention will be described below with reference to FIGS. 1 and 2. 2 is an air filter attached to the unit 1, 3 is a heat exchanger, and 4 is a fan for blowing air. As the fan 4 rotates, air passes through the air filter 2, passes through the heat exchanger 1, and is discharged from the lower front of the unit 1. Reference numeral 5 denotes a clogging detector, which is disposed downstream of the filter 2 and fixed to the unit 1. As shown in FIG. 2, the clogging detector 5 has a structure in which electrodes 7a and 7b are embedded in the outer periphery of a ring-shaped insulating material 6, and a bag-shaped pressure-sensitive resistor 8 is covered on the outside of the electrodes 7a and 7b. A band 9 formed of an insulating material is provided, and a pressure sensitive resistor and electrodes 7a and 7b are provided.
to be fixed. The ring-shaped insulating material 6 is a part of the unit 1 and is fixed on the lee side of the filter 2 so that the NB is in the direction of the wind. 10 is a lead wire for taking out electrical signals from the electrodes 7a and 7b. To explain the operation of this embodiment configured as above, the pressure sensitive resistor 8 is made of a stretchable rubber material and is formed by dispersing carbon in the rubber material. When the volume of air passing through the air filter 2 is large and the wind pressure is high, the bag-shaped pressure-sensitive resistor 8 swells like a balloon, and the chains of carbon dispersed inside become coarser, increasing the electrical resistance value. do. Conversely, when the air filter 2 becomes clogged and the air volume decreases, the wind pressure decreases, the balloon formed by the pressure-sensitive resistor 8 deflates, and the chains of carbon dispersed inside become denser, and the electrical resistance value becomes M. After a while, it acts as an airflow sensor. The relationship between air volume and electrical resistance value is shown in Figure 3. A in Figure 3,
B and C are characteristics associated with changes in the rotational speed of the blower fan 4, and A shows the case of strong wind operation, B shows weak wind operation, and C shows the case of gentle wind operation. Since the blower is operated so as to be able to change the strength or weakness as desired, the processing of the electric signal from the pressure sensitive resistor 8 will be described next. Electrical signals 10a, 1 of pressure sensitive resistor 8
01) are connected as shown in the circuit diagram of FIG. When the air filter 2 becomes clogged, the electrical resistance value of the pressure-sensitive resistor 8 increases during strong wind operation and decreases in the order of weak wind and light wind. When clogging occurs, the potential at 100 points shown in FIG. 4 rises, so when the potential rises above a set value in each operating state, a signal indicating that clogging has occurred can be output. The reference potential of the comparator 11 is set to the blower strength/weak operation selector switch (not shown).
Link with. When operating in strong winds, switch S1 is closed and the operating level is set to a high level. During operating in weak winds, SI is opened and switch S2 is closed to lower the operating level than in strong winds, and in light winds, both SI and S2 are opened. The operation level is lowered below the weak wind operation.When each operation level is exceeded, a signal is transmitted to the microcomputer 12, and the clogging indicator light 14 is turned on via the driver 13 to notify the user that there is a clogging condition. I can let you know.
〔発明の効果」
本発明によれば空気調和機用エアーフィルターの風下に
感圧抵抗体を袋状に成形した風量センサを設け、感圧抵
抗体の電気抵抗値の変化を検出してエアーフィルターの
目詰り状態を表示灯で報知できるように構成したので、
エアーフィルターの目詰り状態を直接検出てき、適正な
報知ができる効果がある。感圧抵抗体はリング状の絶縁
抵抗体に埋込んだ一対の電極に覆せるように構成したの
で、着脱が可能で、送風機が変っても感圧抵抗体のみ交
換できるように構成したこと５さらに送風機の強弱切換
スイッチに連動させて１」詰り報知の動作レヘルを変え
るようにしたので、動作基準レベルを設定する抵抗値を
変えることで微調節が可能となり実用性ならびに量産上
の効果が大である。[Effects of the Invention] According to the present invention, an air flow sensor made of a pressure-sensitive resistor formed into a bag shape is provided on the leeward side of an air filter for an air conditioner, and a change in the electrical resistance value of the pressure-sensitive resistor is detected to detect the change in the air filter. The system is configured so that the clogging status can be notified using an indicator light.
It has the effect of directly detecting the clogging condition of the air filter and providing appropriate notification. The pressure-sensitive resistor was constructed so that it could be covered by a pair of electrodes embedded in a ring-shaped insulated resistor, so it was removable and the pressure-sensitive resistor could be replaced even if the blower was changed.5. Furthermore, the operating level of the 1" blockage alarm is changed in conjunction with the blower's strength changeover switch, so fine adjustment can be made by changing the resistance value that sets the operating reference level, which is highly effective in terms of practicality and mass production. It is.
第１図は空気調和機の縦断面図、第２図は本発明による
エアーフィルターの目詰り検出器を示す縦断面図、第３
図は感圧抵抗体の特性図、第４図は［」詰り検出信号を
処理する回路図である。
２・・・エアーフィルター、５・・目詰り検出器、６・
・・リング状絶縁材、７ａ、７ｂ・・電極、８・・感圧
抵抗体、９・・・バンド、１０・・・リード線。
代理人弁理士 薄 １）利〆λ）
手続補正書（方式）
事件の表示
昭和５７年特許願第 ２２３８３２ 号発明の名 称
エアーフィルターの目詰り検出器補正をする者
・＋ｉｐ＋とのＩ朋 特許出願人
名 Ｉ″、、 （５１０）株式金目 日 立 製
作 所代 理 人
補正 の 内 容 １．明細書第１頁第２行目「フィル
ターの目詰り検出器」とあるのを「エアーフィルターの
目詰り検出器」と補正する。Fig. 1 is a longitudinal sectional view of an air conditioner, Fig. 2 is a longitudinal sectional view showing an air filter clogging detector according to the present invention, and Fig. 3 is a longitudinal sectional view of an air conditioner.
The figure is a characteristic diagram of the pressure sensitive resistor, and FIG. 4 is a circuit diagram for processing a clogging detection signal. 2... Air filter, 5... Clogging detector, 6...
...Ring-shaped insulating material, 7a, 7b...Electrode, 8...Pressure sensitive resistor, 9...Band, 10...Lead wire. Representative Patent Attorney Susuki 1) Procedural Amendment (formality) Case Description 1982 Patent Application No. 223832 Name of the invention
Person who corrects air filter clogging detector / +ip+ Patent applicant name I'',, (510) Stock money Made by Hitachi
Contents of amendment by the production agent 1. In the second line of page 1 of the specification, the phrase "filter clogging detector" is corrected to read "air filter clogging detector."
Claims (1)
目詰りした状態を表示ランプなどで報知させる装置にお
いて、エアーフィルターの空気ｉｌｊ ｌ側に感圧抵抗
体を袋状に成形した風量センサーを設け、該風量センサ
ーの電気抵抗変化を検出してエアーフィルターの１」詰
り状態を報知することを特徴とするエアーフィルターの
目詰り検出器。 ２、 絶縁材料をリング状に成形し、リング外周の２箇
所に電極を設けるとともに、袋状に成形した感圧抵抗体
の開口部をリング外周に設けた電極（７ａ、７ｂ）に密
着させるように固定した特許請求の範囲第１項記載のエ
アーフィルターの目詰り検出器。 ３、感店抵抗体（８）の抵抗値を検出し、抵抗変化を電
圧の変化に変換して動作レベルを設定する回路において
、空気調和機本体の風量切換スーイッチと連動させて、
動作レベルをシフトさせる特許請求の範囲第１項記載の
エアーフィルターの目詰り検出器。[Claims] 1. Detecting clogging of an air filter for an air conditioner,
In a device that notifies a clogged state using an indicator lamp or the like, an air volume sensor made of a pressure-sensitive resistor shaped like a bag is installed on the air side of the air filter, and changes in the electrical resistance of the air volume sensor are detected and the air filter is 1. An air filter clogging detector characterized by notifying a clogging state. 2. Molding the insulating material into a ring shape and providing electrodes at two locations around the ring's periphery, as well as making sure that the openings of the bag-shaped pressure-sensitive resistor are in close contact with the electrodes (7a, 7b) provided on the ring's outer periphery. An air filter clogging detector according to claim 1, which is fixed to a clogging detector for an air filter according to claim 1. 3. In the circuit that detects the resistance value of the sensor resistor (8), converts the change in resistance into a change in voltage, and sets the operating level, in conjunction with the air volume switch on the air conditioner body,
The air filter clogging detector according to claim 1, which shifts the operating level.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57223832A JPS59115929A (en) | 1982-12-22 | 1982-12-22 | Clogging detector for air filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57223832A JPS59115929A (en) | 1982-12-22 | 1982-12-22 | Clogging detector for air filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS59115929A true JPS59115929A (en) | 1984-07-04 |
Family
ID=16804411
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP57223832A Pending JPS59115929A (en) | 1982-12-22 | 1982-12-22 | Clogging detector for air filter |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59115929A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6196239U (en) * | 1984-11-27 | 1986-06-20 | ||
| CN101603723A (en) * | 2008-06-13 | 2009-12-16 | 乐金电子(天津)电器有限公司 | The clean prompting method of indoor machine filter screen of embedded type air conditioner |
| JP2010220943A (en) * | 2009-03-25 | 2010-10-07 | Minoru Kajiwara | Desktop bookrest and device for fixing book in vehicle using the desktop bookrest |
| CN108679777A (en) * | 2018-04-17 | 2018-10-19 | 奥克斯空调股份有限公司 | A kind of method that air-conditioning cleaning function automatically controls |
| CN113731621A (en) * | 2021-09-06 | 2021-12-03 | 神华准格尔能源有限责任公司 | Jigger floating rod fault processing method and equipment and jigger system |
-
1982
- 1982-12-22 JP JP57223832A patent/JPS59115929A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6196239U (en) * | 1984-11-27 | 1986-06-20 | ||
| CN101603723A (en) * | 2008-06-13 | 2009-12-16 | 乐金电子(天津)电器有限公司 | The clean prompting method of indoor machine filter screen of embedded type air conditioner |
| JP2010220943A (en) * | 2009-03-25 | 2010-10-07 | Minoru Kajiwara | Desktop bookrest and device for fixing book in vehicle using the desktop bookrest |
| CN108679777A (en) * | 2018-04-17 | 2018-10-19 | 奥克斯空调股份有限公司 | A kind of method that air-conditioning cleaning function automatically controls |
| CN113731621A (en) * | 2021-09-06 | 2021-12-03 | 神华准格尔能源有限责任公司 | Jigger floating rod fault processing method and equipment and jigger system |
| CN113731621B (en) * | 2021-09-06 | 2024-02-27 | 神华准格尔能源有限责任公司 | Method and equipment for processing faults of float rod of jigger and jigger system |
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