JPH0692948B2 - Contamination detection device for air conditioner - Google Patents
Contamination detection device for air conditionerInfo
- Publication number
- JPH0692948B2 JPH0692948B2 JP59214510A JP21451084A JPH0692948B2 JP H0692948 B2 JPH0692948 B2 JP H0692948B2 JP 59214510 A JP59214510 A JP 59214510A JP 21451084 A JP21451084 A JP 21451084A JP H0692948 B2 JPH0692948 B2 JP H0692948B2
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- Prior art keywords
- sensitivity
- air conditioner
- smoke
- smoking
- air
- Prior art date
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/0004—Gaseous mixtures, e.g. polluted air
- G01N33/0006—Calibrating gas analysers
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/02—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance
- G01N27/04—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance
- G01N27/12—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance of a solid body in dependence upon absorption of a fluid; of a solid body in dependence upon reaction with a fluid, for detecting components in the fluid
- G01N27/122—Circuits particularly adapted therefor, e.g. linearising circuits
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Immunology (AREA)
- Engineering & Computer Science (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- Pathology (AREA)
- General Physics & Mathematics (AREA)
- Physics & Mathematics (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Combustion & Propulsion (AREA)
- Food Science & Technology (AREA)
- Medicinal Chemistry (AREA)
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
Description
【発明の詳細な説明】 産業上の利用分野 本発明は、喫煙などにより室内空気が汚れたことを検出
する空気調和機用汚れ検出装置に関する。Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dirt detector for an air conditioner that detects that indoor air has become dirty due to smoking or the like.
従来の技術 従来より、煙を検知するセンサとして光学式センサやガ
スセンサが利用されているが、特に室内におけるタバコ
の煙を検知し、換気扇や空気清浄機を動作させる汚れ検
出装置にあっては、その煙の濃度の変化（例えば８畳間
でタバコ２本喫煙による変化）が小さく、また季節や地
域環境（工場地帯、住宅街、山村など）の違いで清浄空
気中のセンサの出力が変わることから、感度調節手段が
設けられ、使用環境や使用者の感覚に応じて調節できる
ようになっている。この感度調節は、実際に喫煙を行な
って、換気扇等を動作させたい汚れの状態で行なうよう
にしていた。2. Description of the Related Art Conventionally, an optical sensor or a gas sensor is used as a sensor for detecting smoke, but in particular, in a dirt detection device that detects smoke in a room and operates a ventilation fan or an air cleaner, The change in the smoke density (for example, a change between two tatami mats by smoking two cigarettes) is small, and the sensor output in clean air changes depending on the season and local environment (factory zone, residential area, mountain village, etc.). Therefore, the sensitivity adjusting means is provided so that the sensitivity can be adjusted according to the use environment and the sense of the user. This sensitivity adjustment is performed by actually smoking and then in a dirty state where the ventilation fan or the like is desired to operate.
発明が解決しようとする問題点 従来の汚れ検出装置は、特にそれを設置した時やメンテ
ナンス時に感度調節を行なう必要がある場合には、必ず
準備した基準ガスにより行なうか、実際に喫煙をして室
内空気を汚れた状態にして行なう必要がある。このため
喫煙により行なう場合は特に感度調節に時間を要し、あ
るいはまた喫煙を行なう人がいない場合は、その時点で
は感度調節が行なえないという問題点があった。Problems to be Solved by the Invention In the conventional dirt detection device, when it is necessary to adjust the sensitivity, especially when installing it or performing maintenance, be sure to use the prepared reference gas or actually smoke. It is necessary to clean the room air. Therefore, when smoking is performed, it takes a long time to adjust the sensitivity, or when there is no smoker, there is a problem that the sensitivity cannot be adjusted at that time.
問題点を解決するための手段 本発明は従来の問題点を解決するために、換気扇等への
汚れ検出出力とは別に、室内空気が清浄な状態における
感度の調節状態を表示する表示手段を設けるものであ
る。Means for Solving the Problems In order to solve the conventional problems, the present invention is provided with a display means for displaying the adjustment state of the sensitivity when the indoor air is clean, in addition to the dirt detection output to the ventilation fan and the like. It is a thing.
作用 本発明のこの表示手段の表示の変化により、清浄な空気
中で感度調節を行なうことにより、喫煙時の室内空気の
汚れた状態での感度調節を行なうこととほぼ同等の結果
が得られ、感度調節を容易に行なうことができる。By the change of the display of the display means of the present invention, by performing the sensitivity adjustment in clean air, almost the same result as the sensitivity adjustment in the dirty state of the indoor air during smoking is obtained, The sensitivity can be easily adjusted.
実施例 本発明に基づく空気調和機用汚れ検出装置を添付図面に
示す一実施例により詳細に説明する。Embodiment A dirt detecting device for an air conditioner according to the present invention will be described in detail with reference to an embodiment shown in the accompanying drawings.
第１図は本発明の空気調和機用汚れ検出装置の構成図で
ある。図において１は直流電源であり、直流電源電圧Vc
cを発生し、以下の回路等に供電する。２は煙センサ
（ここでは半導体式のガスセンサ）、21はヒータ、22は
センサ部の電極であり、この２つの電極間の直流抵抗Rs
が煙の濃度（主として可燃性ガス成分の濃度）により変
化する。３は抵抗、４は感度調節用の可変抵抗器、５は
ノイズ吸収用のコンデンサである。また抵抗３、可変抵
抗器４、コンデンサ５により感度調節手段Ａを構成し、
煙センサ２のセンサ抵抗Rsとより、検出電圧Vsを出力す
る。FIG. 1 is a configuration diagram of a dirt detection device for an air conditioner of the present invention. In the figure, 1 is a DC power supply, and DC power supply voltage Vc
Generate c and supply power to the circuits below. 2 is a smoke sensor (here, a semiconductor gas sensor), 21 is a heater, 22 is an electrode of the sensor section, and DC resistance Rs between these two electrodes
Changes depending on the smoke concentration (mainly the concentration of combustible gas components). Reference numeral 3 is a resistor, 4 is a variable resistor for adjusting sensitivity, and 5 is a capacitor for absorbing noise. Further, the resistance 3, the variable resistor 4, and the capacitor 5 constitute the sensitivity adjusting means A,
The detection voltage Vs is output from the sensor resistance Rs of the smoke sensor 2.
６はサーミスタ、7,8,9,10は抵抗、11はコンパレータ、
12,13は抵抗、14はノイズ吸収用のコンデンサであり、
これらにより第２の比較手段Ｂを構成する。この第２の
比較手段Ｂにおいてサーミスタ６は煙センサ２の温度に
対する影響を補正するためのものである。コンパレータ
11の一方の入力端子は、図面の記号Vdで示す空気の汚れ
検出用の第２の設定値である設定電圧が入力され、検出
電圧Vsがこの第２の設定値である設定電圧Vdより高くな
ると、コンパレータ11の出力端子がローレベルからハイ
レベルとなり、空気が汚れたことを示す。この出力端子
より汚れ検出出力を発して、外部の換気扇や空気清浄機
（図示せず）等の空気調和機をオンさせるものである。
このように第２の設定値でえる設定電圧Vdは、後述する
操作で調節された感度調節手段Ａを介して出力される煙
センサ２の検出電圧Vsと比較され、空気調和機の作動が
必要になると判断される基準値であり、第２の比較手段
Ｂは検出電圧Vsと設定電圧Vdを比較し、空気調和機を作
動させるための汚れ検出信号を発するものである。6 is a thermistor, 7,8,9,10 are resistors, 11 is a comparator,
12, 13 are resistors, 14 is a noise absorbing capacitor,
These constitute the second comparing means B. In the second comparing means B, the thermistor 6 is for correcting the influence of the smoke sensor 2 on the temperature. comparator
One of the 11 input terminals is input with a set voltage which is a second set value for air pollution detection indicated by symbol Vd in the drawing, and the detected voltage Vs is higher than the second set value Vd which is the second set value. Then, the output terminal of the comparator 11 changes from low level to high level, which indicates that the air is dirty. A dirt detection output is emitted from this output terminal to turn on an air conditioner such as an external ventilation fan or an air cleaner (not shown).
Thus, the set voltage Vd obtained by the second set value is compared with the detected voltage Vs of the smoke sensor 2 output via the sensitivity adjusting means A adjusted by the operation described later, and the operation of the air conditioner is required. The second comparison means B compares the detection voltage Vs with the set voltage Vd, and issues a dirt detection signal for operating the air conditioner.
なお抵抗12,13はこのコンパレータ11の動作に若干のヒ
ステリシスを与えるもので、出力端子がローからハイ、
及びハイからローになる時のセンサ抵抗Rsに若干の差を
持たせる働きをするが、以後の説明ではこのヒステリシ
ス効果については無視する。The resistors 12 and 13 give some hysteresis to the operation of the comparator 11, and the output terminal is changed from low to high.
Also, the sensor resistance Rs when it goes from high to low has a slight difference, but this hysteresis effect will be ignored in the following description.
15はコンパレータであり、第２の比較手段Ｂの一部と共
用して与えられる感度調節手段Ａの感度調節用の第１の
設定値である設定電圧Veと検出電圧Vsを入力とする。Reference numeral 15 denotes a comparator, which receives a set voltage Ve and a detected voltage Vs, which are a first set value for sensitivity adjustment of the sensitivity adjustment unit A provided in common with a part of the second comparison unit B.
16は抵抗、17は表示素子であり、コンパレータ15の出力
がハイのとき表示素子17が点灯するもので、コンパレー
タ15と共に表示手段Ｃを構成する。Reference numeral 16 is a resistor, and 17 is a display element. The display element 17 is turned on when the output of the comparator 15 is high, and constitutes the display means C together with the comparator 15.
またサーミスタ６、抵抗7,8,9,10およびコンパレータ15
により第１の比較手段を構成する。The thermistor 6, resistors 7,8,9,10 and comparator 15
This constitutes the first comparison means.
次に動作を説明する。Next, the operation will be described.
第１図における煙センサ２は、喫煙による煙の濃度に対
してそのセンサ抵抗Rsが変化する。今、適当な広さの室
内におけるタバコの喫煙本数をＮ本とすると、センサ抵
抗Rsは第２図に示す曲線L1,L2,L3,のように変化する。
曲線L1,L2,L3の違いは喫煙をしない場合の清浄な空気の
清浄度の違いによるものであり、地域的な空気の清浄度
や季節による違い、更に絶対湿度の影響も若干受けるな
どによる。The smoke sensor 2 in FIG. 1 has a sensor resistance Rs that changes depending on the smoke concentration caused by smoking. Now, assuming that the number of cigarettes smoked in a room having an appropriate size is N, the sensor resistance Rs changes like curves L1, L2, L3 shown in FIG.
The difference between the curves L1, L2, and L3 is due to the difference in cleanliness of clean air when not smoking, due to regional cleanliness of air, seasonal differences, and slight influence of absolute humidity.
ここで曲線L2において喫煙本数N2（例えば８畳間で２
本）に対するセンサ抵抗Rd2は喫煙しない時のセンサ抵
抗Rs2よりも小さくなり、その比率はRd2／Rs2の値は曲
線L1やL3の場合のRd1／Rs1，Rd3／Rs3とほぼ同一の値と
なる。即ち喫煙前と喫煙後のそれぞれのセンサ抵抗の比
率は喫煙前の抵抗値の値にかかわらずほぼ同一となる。Here, on the curve L2, the number N 2 of cigarettes to be smoked (eg, 2
Sensor resistance Rd 2 for this) is smaller than the sensor resistance Rs 2 when not smoking, and the ratio of Rd 2 / Rs 2 is Rd 1 / Rs 1 , Rd 3 / Rs 3 for curves L1 and L3. And the value is almost the same. That is, the ratios of the sensor resistances before smoking and after smoking are almost the same regardless of the resistance value before smoking.
そこで検出電圧Vsは第３図に示すように、可変抵抗器４
を一定の値（第２図の曲線L2に対応するように調整した
値）とすると、曲線L1,L2,L3に対応して、それぞれV
s1，Vs2，Vs3ととなる。この状態で、コンパレータ11に
入力すると、曲線Vs2では、喫煙本数Ｎ＝N2でVs2＝Vdと
なり汚れ検出出力Voを発するが、曲線Vs1，Vs2ではそれ
ぞれ喫煙本数ＮががN1，N3のとき汚れ検出出力Voを発し
てしまう。Therefore, the detection voltage Vs is, as shown in FIG.
Is a constant value (value adjusted so as to correspond to the curve L2 in FIG. 2), V respectively corresponds to the curves L1, L2, and L3.
It becomes s 1 , Vs 2 , and Vs 3 . In this state, when input to the comparator 11, in the curve Vs 2 , the smoking number N = N 2 and Vs 2 = Vd, and the dirt detection output Vo is emitted, but in the curves Vs 1 and Vs 2 , the smoking number N is N 1 respectively. , N 3 emits the dirt detection output Vo.
しかしながら可変抵抗器４を調節して、曲線Vs1及びVs3
をそれぞれVs2とほぼ同様な特性に合わせれば即ち喫煙
本数Ｎ＝０本の時の検出電圧を曲線Vs2と同一の値Vs2＝
Vdに合わせれば、汚れ検出出力Voを発する時の喫煙本数
ＮがＮ＝N2にほぼ一致することになる。However, by adjusting the variable resistor 4, the curves Vs 1 and Vs 3
Together we almost same characteristics as Vs 2 respectively i.e. smoked N = same values as the curve Vs 2 a detection voltage when the 0 present Vs 2 =
According to Vd, the number N of smoking cigarettes when the dirt detection output Vo is emitted substantially matches N = N 2 .
第１の比較的手段を構成するコンパレータ15は可変抵抗
器４を調節した時、検出電圧Vsが感度調節手段Ａの感度
調節用の第１の設定値である設定電圧Veと等しいか否か
を比較するので、コンパレータ15の出力は、検出電圧Vs
と設定電圧Veとの大小関係が逆転することによって変化
し、そのコンパレータ15の出力の変化に伴って表示素子
17の点灯／消灯状態が変化する。表示素子17の点灯／消
灯状態を確認することにより、喫煙しない状態で常に検
出電圧Vsを設定電圧Veに一致させることができる。この
調整後は、それ以降に喫煙した場合、喫煙本数Ｎ＝N2で
汚れ検出出力が発せられる。もちろん部屋の広さが異な
れば喫煙本数Ｎは異なるがほぼ同等の煙の濃度で動作す
ることになる。The comparator 15 constituting the first comparative means determines whether the detection voltage Vs is equal to the set voltage Ve which is the first set value for sensitivity adjustment of the sensitivity adjusting means A when the variable resistor 4 is adjusted. Because of the comparison, the output of the comparator 15 is the detection voltage Vs
Changes when the magnitude relationship between the output voltage and the set voltage Ve is reversed and the output of the comparator 15 changes
The on / off status of 17 changes. By checking whether the display element 17 is turned on or off, the detection voltage Vs can be always matched with the set voltage Ve without smoking. After this adjustment, when smoking after that, the stain detection output is issued with the number of smoking N = N 2 . Of course, if the size of the room is different, the number N of smoking will be different, but the operation will be performed with substantially the same smoke concentration.
このように第１の設定値である設定電圧Veは、空気中の
煙濃度が所定値以下の低濃度条件における、感度調節手
段Ａを介して出力される煙センサ２の検出信号である検
出電圧Vsを合わせる基準となる値であり、コンパレータ
15を含む第１の比較手段は煙の低濃度条件下において検
出電圧Vsと設定電圧Veを合わせる手段であり、第１の比
較手段を用いることにより、感度調節手段Ａの感度調節
が、煙の低濃度条件下において可能となる。As described above, the set voltage Ve which is the first set value is the detection voltage which is the detection signal of the smoke sensor 2 output through the sensitivity adjusting means A under the low concentration condition where the smoke concentration in the air is equal to or lower than the predetermined value. This is the reference value for matching Vs, and the comparator
The first comparison means including 15 is a means for adjusting the detection voltage Vs and the set voltage Ve under a low smoke concentration condition. By using the first comparison means, the sensitivity adjustment of the sensitivity adjustment means A It becomes possible under low concentration conditions.
なお喫煙前の検出電圧Vsを設定電圧Veに調整すること
は、汚れ検出出力Voを発する時の煙の濃度（例えば８畳
間でタバコ２本分）を一義的に決めることを意味してお
り、使用者の感覚と必ずしも一致しないが、目安を与え
ることが可能である。例えば喫煙しない状態でより高感
度に調整したい時は、可変抵抗器４を調整し表示素子17
が消灯状態から点灯状態なった時、及び汚れ検出出力Vo
が発せられる時のそれぞれの可変抵抗器４の回転位置の
間の適当な位置に調節すれば達成しうる。In addition, adjusting the detection voltage Vs before smoking to the set voltage Ve means uniquely determining the density of smoke (for example, two cigarettes in 8 tatami mats) when the dirt detection output Vo is emitted. , It does not always match the user's feeling, but it is possible to give a guide. For example, if you want to adjust the sensitivity with higher sensitivity without smoking, adjust the variable resistor 4 and display element 17
When is turned on from off, and dirt detection output Vo
This can be achieved by adjusting to an appropriate position between the rotational positions of the respective variable resistors 4 when the is emitted.
第４図は本発明の他の実施例であり、表示手段Ｃを改善
し、感度調節時により自由に感度を設定できるようにし
たものである。図において、15H,15M,15Lはそれぞれコ
ンバレータ、16H,16M,16Lはそれぞれ抵抗、17H,17M,17L
はそれぞれ表示素子である。VeH,VeM,VeLはそれぞれ設
定電圧であり、第１図における設定電圧Veを１通りでな
く、それぞれ異なる３通りで与えるもので、例えばVeM
が第１図のVeと等しくし、VeH＞VeM＞VeLの関係とす
る。この構成において、例えば喫煙しない状態で表示素
子17Lが消灯から点灯する位置に可変抵抗器４を調節す
れば、最も低感度の設定となり、表示素子17M更に17Hを
用いた場合はそれぞれより高感度側に調節できることに
なる。FIG. 4 shows another embodiment of the present invention, in which the display means C is improved so that the sensitivity can be freely set during sensitivity adjustment. In the figure, 15H, 15M, and 15L are converters, 16H, 16M, and 16L are resistors, and 17H, 17M, and 17L, respectively.
Are display elements, respectively. VeH, VeM, VeL are set voltages respectively, and the set voltage Ve in FIG. 1 is given not in one way but in three different ways. For example, VeM
Is equal to Ve in FIG. 1 and VeH>VeM> VeL. In this configuration, for example, if the variable resistor 4 is adjusted to a position where the display element 17L lights up from the off state while not smoking, the sensitivity becomes the lowest, and when the display elements 17M and 17H are used, the higher sensitivity side is set. Can be adjusted to.
従って、どの感度で調節するかは使用者が適宜選択する
ことができるものである。なお調節後、表示素子17H,17
M,17Lはその時の室内空気の清浄度を示すモニタ表示機
能を持つようになり、点灯後が多ければ清浄度が低下し
ていることを示し、有効に理由することができる。Therefore, the user can appropriately select which sensitivity is to be adjusted. After adjustment, display elements 17H, 17
The M and 17L now have a monitor display function that shows the cleanliness of the indoor air at that time, and if there are many lights after lighting, it indicates that the cleanliness has decreased, and this can be an effective reason.
この第４図の実施例のように感度設定を選択する他の手
段として、第１図の構成で設定電圧Veを３通り選べるよ
うに切替スイッチを設けることによりコンパレータ15、
表示素子17等は１組で実現できる。また表示手段Ｃは設
定電圧Vdを基準としたA/Dコンバータとその出力を表示
する表示装置との組合せなどでも構成が可能である。As another means for selecting the sensitivity setting as in the embodiment of FIG. 4, a comparator 15 is provided by providing a changeover switch so that the setting voltage Ve can be selected in three ways in the configuration of FIG.
The display element 17 etc. can be realized by one set. The display means C can also be configured by a combination of an A / D converter based on the set voltage Vd and a display device that displays its output.
なお第１図の感度調節用の可変抵抗器４は、煙センサ２
のセンサ抵抗Rsのバラツキをも吸収できるように選んで
いるが、バラツキが少なければ切替スイッチによる構成
も可能である。The variable resistor 4 for adjusting the sensitivity shown in FIG.
The sensor resistance Rs is selected so that it can absorb the variation, but if the variation is small, a configuration using a changeover switch is also possible.
以上本発明の空気調和機用汚れ検出装置を実施例に基づ
いて説明したが、実際に喫煙した状態での感度調節は、
従来と同様に可能であることは明らかである。また煙セ
ンサ２として半導体式ガスセンサ以外であってもほぼ同
等の構成が可能である。The air conditioner stain detection device of the present invention has been described above based on the embodiment, but the sensitivity adjustment in the actual smoking state is as follows.
Obviously, it is possible as before. Further, even if the smoke sensor 2 is other than the semiconductor gas sensor, it is possible to have substantially the same configuration.
更に、本空気調和機用汚れ検出装置は、空気調和機の一
機能としてその空気調和機に一体として構成されるか、
もしくは空気調和機とは物に独立して設けられるもので
あっても、何れの場合にも適用可能である。Furthermore, the dirt detection device for an air conditioner is integrally configured with the air conditioner as a function of the air conditioner,
Alternatively, even if it is provided independently of the air conditioner, it is applicable to any case.
発明の効果 本発明の空気調和機用汚れ検出装置は、空気調和用の換
気扇（特に全熱交換式のものは熱ロスが微少である点が
優れている）や空気洗浄後を制御して、特に喫煙によっ
て汚れ室内空気を清浄に維持するためのものであり、感
度調節用の表示手段を具備することで、清浄な状態であ
っても感度調節を可能とする。この結果、この装置の設
置あるいはメンテナンス時や、通常の使用状態にあって
も、実際に喫煙することなくその設置ないし使用環境に
応じた感度調節ができ、極めて便利であり、その効果は
大なるものがある。Advantageous Effects of the Invention The air conditioner dirt detection device of the present invention controls the ventilation fan for air conditioning (especially the total heat exchange type is excellent in that heat loss is small) and after air cleaning, In particular, it is for keeping indoor air clean by smoking, and by providing a display unit for sensitivity adjustment, sensitivity adjustment is possible even in a clean state. As a result, the sensitivity can be adjusted according to the installation or use environment without actually smoking during installation or maintenance of this device, or during normal use, which is extremely convenient and its effect is great. There is something.
第１図は本発明の一実施例における空気調和機用汚れ検
出装置の構成図、第２図及び第３図は第１図の動作説明
図、第４図は本発明の他の実施例における構成図であ
る。 １……直流電源、２……煙センサ、４……可変抵抗器、
11……コンパレータ（第２のコンパレータ）、15……コ
ンパレータ（第１のコンパレータ）、17……表示素子、
Ａ……感度調節手段、Ｂ……第２の比較手段、Ｃ……表
示手段、Vd……第２の設定電圧、Ve……第１の設定電
圧、Vo……汚れ検出出力。FIG. 1 is a block diagram of a dirt detecting device for an air conditioner in one embodiment of the present invention, FIGS. 2 and 3 are operation explanatory views of FIG. 1, and FIG. 4 is another embodiment of the present invention. It is a block diagram. 1 ... DC power supply, 2 ... smoke sensor, 4 ... variable resistor,
11 ... Comparator (second comparator), 15 ... Comparator (first comparator), 17 ... Display element,
A ... Sensitivity adjusting means, B ... second comparing means, C ... display means, Vd ... second setting voltage, Ve ... first setting voltage, Vo ... dirt detection output.
Claims (1)
その煙センサよりの検出信号の値を変更し得る感度調節
手段と、前記感度調節手段の感度調節用の第１の設定値
と前記感度調節手段によって変更可能な前記煙センサの
検出信号とを比較し、かつ比較対象である２値の大小関
係が逆転した際に出力が変化する第１の比較手段と、そ
の第１の比較手段の出力変化に伴い表示が変化する表示
手段と、汚れ検出用の第２の設定値と前記感度調節手段
によって調節された前記煙センサの検出信号とを比較
し、かつ空気中の煙の濃度が所定以上の高濃度であるこ
とを検出し、空気調和機へ汚れ検出出力を発する第２の
比較手段とを有する空気調和機用汚れ検出装置。1. A smoke sensor for detecting the concentration of smoke in the air,
Comparing the sensitivity adjustment means capable of changing the value of the detection signal from the smoke sensor with the first set value for sensitivity adjustment of the sensitivity adjustment means and the detection signal of the smoke sensor changeable by the sensitivity adjustment means In addition, the first comparison means, the output of which changes when the magnitude relationship of the two binary values to be compared is reversed, the display means of which the display changes according to the output change of the first comparison means, and the dirt detection Of the smoke sensor adjusted by the sensitivity adjusting means and detecting that the density of smoke in the air is higher than a predetermined value, and sends it to the air conditioner. A dirt detecting device for an air conditioner, comprising: a second comparing means for outputting a dirt detecting output.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59214510A JPH0692948B2 (en) | 1984-10-12 | 1984-10-12 | Contamination detection device for air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59214510A JPH0692948B2 (en) | 1984-10-12 | 1984-10-12 | Contamination detection device for air conditioner |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6191552A JPS6191552A (en) | 1986-05-09 |
| JPH0692948B2 true JPH0692948B2 (en) | 1994-11-16 |
Family
ID=16656909
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP59214510A Expired - Lifetime JPH0692948B2 (en) | 1984-10-12 | 1984-10-12 | Contamination detection device for air conditioner |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0692948B2 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0267951A (en) * | 1988-09-02 | 1990-03-07 | Nippon Mining Co Ltd | Apparatus for detecting finishing point of drying of dry cleaning solvent |
| JP4591791B2 (en) | 2008-01-29 | 2010-12-01 | ブラザー工業株式会社 | Humidity detection device and image forming apparatus provided with the humidity detection device |
| GB0813749D0 (en) * | 2008-07-28 | 2008-09-03 | Meso Ltd | Device for measuring air quality |
| JP5991246B2 (en) | 2013-03-25 | 2016-09-14 | ブラザー工業株式会社 | SENSOR DEVICE, IMAGE FORMING DEVICE PROVIDED WITH SAME DEVICE, AND HUMIDITY DETECTION METHOD |
-
1984
- 1984-10-12 JP JP59214510A patent/JPH0692948B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6191552A (en) | 1986-05-09 |
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| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |