JPH0531314A - Air cleaner - Google Patents
Air cleanerInfo
- Publication number
- JPH0531314A JPH0531314A JP3216238A JP21623891A JPH0531314A JP H0531314 A JPH0531314 A JP H0531314A JP 3216238 A JP3216238 A JP 3216238A JP 21623891 A JP21623891 A JP 21623891A JP H0531314 A JPH0531314 A JP H0531314A
- Authority
- JP
- Japan
- Prior art keywords
- output
- circuit
- sensor
- dust
- air purifier
- 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.)
- Granted
Links
- 239000000428 dust Substances 0.000 claims abstract description 50
- 238000001514 detection method Methods 0.000 claims abstract description 28
- 238000006243 chemical reaction Methods 0.000 claims abstract description 19
- 230000002159 abnormal effect Effects 0.000 claims abstract description 13
- 230000003321 amplification Effects 0.000 claims abstract 4
- 238000003199 nucleic acid amplification method Methods 0.000 claims abstract 4
- 230000010354 integration Effects 0.000 claims abstract 2
- 230000005540 biological transmission Effects 0.000 claims description 5
- 230000008054 signal transmission Effects 0.000 claims description 2
- 206010000369 Accident Diseases 0.000 abstract description 6
- 230000002265 prevention Effects 0.000 abstract description 3
- 238000009434 installation Methods 0.000 abstract description 2
- 239000000779 smoke Substances 0.000 description 10
- 238000010586 diagram Methods 0.000 description 9
- 230000005856 abnormality Effects 0.000 description 7
- 235000019504 cigarettes Nutrition 0.000 description 5
- 239000007789 gas Substances 0.000 description 4
- 238000003915 air pollution Methods 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- 230000003213 activating effect Effects 0.000 description 2
- 238000011109 contamination Methods 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 230000010355 oscillation Effects 0.000 description 2
- 229920003002 synthetic resin Polymers 0.000 description 2
- 239000000057 synthetic resin Substances 0.000 description 2
- 241000282412 Homo Species 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 230000003749 cleanliness Effects 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 150000002431 hydrogen Chemical class 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000000391 smoking effect Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 230000008685 targeting Effects 0.000 description 1
Landscapes
- Investigating Or Analysing Materials By Optical Means (AREA)
- Filtering Of Dispersed Particles In Gases (AREA)
- Fire Alarms (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、店舗、事務所等の非住
宅及び一般家庭において使用される空気清浄器に関し、
特に空気の汚れを検出するセンサの付加機能としての警
報出力に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air purifier used in non-residential homes such as stores and offices and general households.
In particular, the present invention relates to an alarm output as an additional function of a sensor that detects air pollution.
【０００２】[0002]
【従来の技術】従来の空気清浄器においては、室内の空
気の汚れを検出して吸気ファンの回転、停止を自動運転
制御する空気汚れセンサとして、タバコの煙に含まれる
水素等を、酸化スズ等の抵抗率変化で検出するガス式セ
ンサを用いてる為、電源を投入してからセンサが安定状
態となり機能を開始するまで約５分程度の時間を要し、
又煙が除去された段階においても、センサ素子の抵抗値
は元の状態に復帰するのに十分な時間を必要とする為、
センサの出力信号をマイクロコンピュ−タ等で処理する
為の複雑なプログラムを必要としていた。又、プログラ
ム処理は部屋の広さなど、一定の使用条件を前提とした
粉塵濃度の変化に基づく予測を加味した内容で行なった
ものが大半で、タバコの煙に代表される浮遊粉塵濃度の
変化に見合った運転制御とかけ離れており、空気清浄器
の使用実感（人の感じる清浄感）に合わないといった欠
点を有していた。2. Description of the Related Art In a conventional air purifier, hydrogen contained in cigarette smoke is used as an air pollution sensor for automatically controlling the rotation and stop of an intake fan by detecting dirt in the room air. Since a gas type sensor that detects changes in resistivity is used, it takes about 5 minutes from turning on the power until the sensor becomes stable and starts to function.
Also, even when the smoke is removed, the resistance value of the sensor element requires sufficient time to return to the original state,
A complicated program is required to process the output signal of the sensor with a microcomputer or the like. In addition, most of the program processing was performed with the content of prediction based on changes in dust concentration assuming certain usage conditions such as the size of the room, and changes in floating dust concentration represented by cigarette smoke. It has a defect that it is far from the operation control suitable for the above and does not match the actual feeling of use of the air purifier (the feeling of cleanliness felt by humans).
【０００３】[0003]
【発明が解決しようとする課題】空気清浄器に用いられ
ている空気汚れセンサは、煙粉塵の代用として、煙から
発生するガス（水素、アンモニア等）に即応するガスセ
ンサを用いておりセンサが安定して出力を行うまでに上
述のように約５分要し、空気の汚れを感じて空気清浄器
の電源をいれても直ちに自動運転モ−ドで動作出来ず、
強制的にファンを回す必要があった。またセンサが一度
ガスを感知したのち、元の抵抗値に復帰するのに長い時
間を必要とし、従って粉塵量に見合うファン回転を行な
うためにセンサ出力のサチュレ−ションを検知しタイマ
運転を行う複雑なプログラム処理が必要不可欠であっ
た。又、タバコの火の消し忘れ等火災の大きな原因の一
つである寝タバコによる火災発生に際し、空気清浄器の
運転により煙発生の検知が遅れ、煙感知器を設けていた
のにもかかわらず、大きな火災事故につながる原因とな
るという上記種々の問題点が生じていた。本発明は、上
記種々の問題点に鑑みてなされたものであり、警報を出
力することにより、大きな火災事故につながることの無
い空気清浄器を提供することを目的としている。The air pollution sensor used in the air purifier uses a gas sensor that immediately responds to gas (hydrogen, ammonia, etc.) generated from smoke as a substitute for smoke dust, and the sensor is stable. As described above, it takes about 5 minutes to output, and even if the air cleaner is turned on and the air purifier is turned on, it cannot immediately operate in the automatic operation mode.
It was necessary to forcibly turn the fan. In addition, it takes a long time for the sensor to detect the gas once and then to return to the original resistance value. Therefore, in order to rotate the fan corresponding to the dust amount, the saturation of the sensor output is detected and the timer operation is complicated. Various program processing was indispensable. Also, when a sleeping cigarette fire that is one of the major causes of fire, such as forgetting to turn off the cigarette's fire, the detection of smoke generation was delayed due to the operation of the air purifier, despite the fact that the smoke detector was installed. However, the above-mentioned various problems that cause a large fire accident have occurred. The present invention has been made in view of the various problems described above, and an object thereof is to provide an air purifier that does not lead to a large fire accident by outputting an alarm.
【０００４】[0004]
【課題を解決するための手段】上記問題点を解決するた
めに提案される請求項１の本発明は、空気の汚れを検出
するセンサとして、発光器から発する光が浮遊粉塵に当
たって拡散反射する散乱光を受光器に集光して検知する
光電式粉塵センサを有する空気清浄器において、前記光
電式粉塵センサ内で、前記受光器の受光電流をＩ／Ｖ変
換、増幅、検波、積分及びＤＣ増幅し、得た電圧値を、
Ａ／Ｄ変換回路を介して、空気清浄器のファン駆動用モ
−タの回転制御を行なう信号処理回路に、入力し、異常
な粉塵濃度を検出した時点には警報音を発生する出力装
置を設けたものである。請求項２の本発明は、温度セン
サにより検出された温度出力信号をＡ／Ｄ変換回路を介
して信号処理回路に入力し、粉塵量に相当する電圧値を
Ａ／Ｄ変換回路を介して入力された値と比較し、その結
果において、警報を発生する出力回路を起動する、温度
検知回路を備えたことを特徴とする請求項１項記載のも
のである。請求項３の本発明は、焦電式人体検知センサ
により検出された電圧信号をＡ／Ｄ変換回路を介して信
号処理回路に入力し、粉塵量に相当する電圧値をＡ／Ｄ
変換回路を介して入力された値と比較し、その結果にお
いて警報を発生する出力回路を起動する、人体検知回路
を備えたことを特徴とする請求項１項記載のものであ
る。請求項４の本発明は、異常な粉塵濃度を検出した時
点にて発生する出力が、移報接点であることを特徴とす
る請求項１〜３項のいずれかに記載のものである。請求
項５の本発明は、上記の出力が、多重伝送信号であるこ
とを特徴とする請求項１〜３項のいずれかに記載のもの
である。請求項６の本発明は、上記の出力が、ワイアレ
ス信号伝送による電波信号であることを特徴とする請求
項１〜３項のいずれかに記載のものである。SUMMARY OF THE INVENTION The present invention as claimed in claim 1 which is proposed to solve the above-mentioned problems, is a sensor for detecting dirt in the air. In an air purifier having a photoelectric dust sensor that collects and detects light on a light receiver, in the photoelectric dust sensor, the received current of the light receiver is I / V converted, amplified, detected, integrated, and DC amplified. And the obtained voltage value is
An output device that outputs an alarm sound when an abnormal dust concentration is detected by inputting it to a signal processing circuit that controls the rotation of a fan driving motor of an air purifier via an A / D conversion circuit. It is provided. According to the second aspect of the present invention, the temperature output signal detected by the temperature sensor is input to the signal processing circuit via the A / D conversion circuit, and the voltage value corresponding to the dust amount is input via the A / D conversion circuit. The temperature detecting circuit according to claim 1, further comprising a temperature detecting circuit for activating an output circuit for generating an alarm according to a result of comparison with the measured value. According to a third aspect of the present invention, the voltage signal detected by the pyroelectric human body detection sensor is input to the signal processing circuit via the A / D conversion circuit, and the voltage value corresponding to the dust amount is A / D.
4. The human body detection circuit according to claim 1, further comprising a human body detection circuit for comparing with a value input through the conversion circuit and activating an output circuit for generating an alarm according to the result. The present invention according to claim 4 is the one according to any one of claims 1 to 3, wherein the output generated at the time of detecting the abnormal dust concentration is a transfer contact. The present invention according to claim 5 is the one according to any one of claims 1 to 3, wherein the output is a multiplex transmission signal. The present invention according to claim 6 is the one according to any one of claims 1 to 3, wherein the output is a radio signal by wireless signal transmission.
【０００５】[0005]
【作用】請求項１の本発明によれば、検知した浮遊粉塵
濃度に見合うファンの回転制御を行う信号処理回路に、
火災による煙濃度レベルの入力が入った際、警報出力を
行うよう、警報ブザ−等の出力機能を持たせてあるの
で、火災の発生がすぐ分かる。請求項２の本発明では、
警報を発する判定基準として、部屋の温度の急激な変化
を同時に検出し、前記、煙濃度レベルの検知信号と同時
に発生した時のみを火災と断定してもよい。この事によ
り、従来、単に粉塵の検出のみ行っていた空気清浄器の
空気汚れセンサを、火災事故の検知も行う機能を付加す
ることが可能となり、特に喫煙者の割合の多い老人が空
気清浄器を自動運転モ−ドで喫煙し不用意に寝タバコに
至って火災事故につながるのを未然に防止することが可
能な機器を、ロ−コストにて提供することができる。請
求項３の本発明では、人体検知回路を備えたことによ
り、人の不在、睡眠状態の検出と、異常な浮遊粉塵濃度
の発生とを同時に検出したときのみ、火災と断定でき
る。請求項４の本発明では、異常な粉塵濃度を検出した
時点にて発生する出力が、移報接点であるので、離れた
場所においても異常の発生を知ることができる。請求項
５の本発明では、上記の出力が多重伝送信号であるの
で、火災検知システムを構成した場合、空気清浄器に内
蔵されたセンサユニットの利用によりローコスト化が可
能となる。請求項６の本発明では、上記出力がワイヤレ
ス信号としているので、火災検知システムを構成した場
合、配線工事が不要となる。According to the present invention of claim 1, in the signal processing circuit for controlling the rotation of the fan corresponding to the detected suspended dust concentration,
Since an output function such as an alarm buzzer is provided so that an alarm is output when a smoke concentration level due to a fire is input, the occurrence of a fire can be immediately known. According to the present invention of claim 2,
As a criterion for issuing an alarm, a rapid change in room temperature may be detected at the same time, and a fire may be determined only when the smoke concentration level detection signal is generated at the same time. This makes it possible to add a function to detect a fire accident to the air dirt sensor of an air purifier that has traditionally only detected dust, and especially for elderly people who have a large percentage of smokers. It is possible to provide, at a low cost, a device capable of preventing the occurrence of a fire accident by smoking in an automatic driving mode and inadvertently leading to sleeping cigarettes. According to the third aspect of the present invention, by providing the human body detection circuit, it is possible to determine the fire only when the absence of a person and the detection of the sleeping state and the occurrence of the abnormal airborne dust concentration are simultaneously detected. According to the present invention of claim 4, since the output generated at the time of detecting the abnormal dust concentration is the transfer contact, it is possible to know the occurrence of the abnormality even at a distant place. According to the present invention of claim 5, since the output is a multiplex transmission signal, the cost can be reduced by using the sensor unit incorporated in the air purifier when the fire detection system is configured. According to the present invention of claim 6, since the output is a wireless signal, no wiring work is required when a fire detection system is configured.
【０００６】[0006]
【実施例】以下に、本発明の第１実施例を図面に基づい
て記述する。空気の汚れを検出するセンサとして、粉塵
の発生量に見合うアナログ量を出力する光電式粉塵セン
サを用い、センサの検出範囲の幅を、ビル管理法に定め
る
浮遊粉塵濃度レベル（＝０．１５mg／ｍ3）
から火災発生を断定する浮遊粉塵濃度レベル（＝１５mg
／ｍ3相当）まで設けるものとする。図１は本発明によ
る空気清浄器全体の分解斜視図である。光電式粉塵セン
サＡは、空気の吸い込み口１４の反対側より空気清浄器
本体Ｂのファン７２の吸気気流の一部をバイパス通路７
７にてバイパスする。この空気清浄器Ｂは、きょう体７
１の中にファン７２を備え、きょう体７１の前面から導
入した空気をきょう体７１の上面に設けた吹き出し口７
６から送出するように構成されている。きょう体７１の
前面には前面カバ−７３が着脱自在に装着され、きょう
体７１と前面カバ−７３との間には、フィルタホルダ７
４に保持された一対のフィルタ７５ａ、７５ｂが配設さ
れる。フィルタ７５ａは大きな塵が中に入るのを防止す
る為に設けられ、フィルタ７５ｂは浮遊微粒子や匂いの
一部を除去する為に設けられている。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described below with reference to the drawings. A photoelectric dust sensor that outputs an analog amount commensurate with the amount of dust generated is used as a sensor for detecting dirt on the air, and the width of the sensor detection range is set to the suspended dust concentration level (= 0.15 mg / m 3) assert the fire from floating dust concentration level (= 15 mg
/ M 3 equivalent). FIG. 1 is an exploded perspective view of the entire air purifier according to the present invention. In the photoelectric dust sensor A, a part of the intake airflow of the fan 72 of the air purifier body B from the side opposite to the air suction port 14 is partially bypassed.
Bypass at 7. This air purifier B is a case 7
1 has a fan 72, and blows air introduced from the front of the casing 71 on the upper surface of the casing 71.
It is configured to send out from 6. A front cover 73 is detachably attached to the front surface of the casing 71, and the filter holder 7 is provided between the casing 71 and the front cover 73.
A pair of filters 75a and 75b held by the No. 4 is provided. The filter 75a is provided to prevent a large amount of dust from entering the inside, and the filter 75b is provided to remove a part of suspended particulates and odor.
【０００７】図２は本発明の回路構成図である。図３に
て示す光電式粉塵センサＡのアナログ出力はＡ／Ｄ変換
回路８１を介してデジタル信号に変換され、信号処理回
路８２に入り処理されて、ファンモ−タ駆動出力回路８
３にて、検知された浮遊粉塵量に見合った回転スピ−ド
にて、ファンモ−タ８４を回転させる。この場合、信号
処理のプログラムに基づき、火災発生時の浮遊粉塵濃度
レベルの信号を一定時間以上検知したときは、直ちにフ
ァンモ−タ８４の回転を中止し、警報出力回路８５を介
して音出力装置８６あるいは表示出力装置８７を起動す
る。FIG. 2 is a circuit diagram of the present invention. The analog output of the photoelectric dust sensor A shown in FIG. 3 is converted into a digital signal through the A / D conversion circuit 81, and is processed in the signal processing circuit 82 to be processed by the fan motor drive output circuit 8
At 3, the fan motor 84 is rotated at a rotation speed corresponding to the detected amount of suspended dust. In this case, based on the signal processing program, when the signal of the floating dust concentration level at the time of fire occurrence is detected for a certain time or longer, the rotation of the fan motor 84 is immediately stopped and the sound output device is output via the alarm output circuit 85. 86 or the display output device 87 is activated.
【０００８】図３に本発明に用いる光電式粉塵センサの
内部平面図、図４に側面断面図及び図５に回路構成図を
示す。図３に示すように、発光ダイオ−ドよりなる発光
素子ＥＤ（発光器）およびホトダイオ−ドよりなる受光
素子ＬＤ（受光器）が直方体状ケ−ス１の中に配設され
る。ケ−ス１は、合成樹脂よりなり互いに対向する２面
が開口した矩形枠状のボディ１０と、ボディ１０の両開
口面をそれぞれ覆う金属製の第１のカバ−２０及び合成
樹脂製の第２のカバ−３０により構成される。ボディ１
０には壁面１１によって囲まれた検知室１２が形成され
ている。第１のカバ−２０及び第２のカバ−３０にはそ
れぞれ流通口２１、３１が形成され両流通口２１、３１
は開口面に直交する方向の一直線上に位置する。以上の
ような構造によって、両流通口２１、３１の間に検知室
１２を通る流路を形成することができ、発光素子ＥＤの
照射領域と受光素子ＬＤの受光領域との重複部分である
検知空間の中での浮遊微粒子を検知することができるの
である。FIG. 3 is an internal plan view of the photoelectric dust sensor used in the present invention, FIG. 4 is a side sectional view, and FIG. 5 is a circuit configuration diagram. As shown in FIG. 3, a light emitting device ED (light emitting device) made of a light emitting diode and a light receiving device LD (light receiving device) made of a photo diode are arranged in a rectangular parallelepiped case 1. The case 1 is made of a synthetic resin and has a rectangular frame-shaped body 10 having two opposite surfaces opened, a metal first cover 20 for covering both opening surfaces of the body 10, and a synthetic resin first case. It is composed of two covers 30. Body 1
A detection chamber 12 surrounded by a wall surface 11 is formed at 0. The first cover 20 and the second cover 30 are respectively provided with flow ports 21 and 31, and both flow ports 21 and 31 are provided.
Is located on a straight line in a direction orthogonal to the opening surface. With the structure as described above, a flow path that passes through the detection chamber 12 can be formed between the both flow ports 21 and 31, and the detection is an overlapping portion of the irradiation region of the light emitting element ED and the light receiving region of the light receiving element LD. It is possible to detect suspended particles in the space.
【０００９】ところで、発光素子ＥＤは、図５に示すよ
うに、発振回路５１及び駆動回路５２により、ほぼ一定
周期で間欠的に点灯するように駆動される。一方、受光
素子ＬＤの受光量に対応した電流出力の受光信号は、演
算増幅回路を用いて構成された入力インピ−ダンスが非
常に高く、帰還抵抗の非常に高い（１００ΜΩ程度）電
流−電圧変換回路６１を通して受光量に対応する電圧出
力に変換される。その後、電圧出力に変換された、受光
信号は、帯域フィルタ６２を通りさらに、ピ−クカット
回路６３によりクリッピングされノイズ成分が除去され
る。このようにして、受光信号からノイズ成分を除去し
た後に、受光信号をサンプルホ−ルド回路６４に入力
し、発振回路５１の出力に基づいて発光素子ＥＤの点灯
タイミングに同期するように受光信号を取り込み、次の
受光信号が入力されるまでの間、受光信号の電圧値を保
持する。そして、サンプルホ−ルド回路６４の出力と、
基準電圧発生回路６６より出力された基準電圧との差分
を取って補正を行う差動増幅回路６７を備え、差動増幅
回路６７の出力を、直流増幅回路６８ににより増幅する
ことにより、受光信号に対応した連続出力が得られるよ
うに構成してある。基準電圧発生回路６６は、電源電圧
を分圧する第１基準電圧発生部６６ａと、第１基準電圧
発生回路６６ａより出力された第１の基準電圧に基づい
て第２の基準電圧を出力する、第２基準電圧発生回路６
６ｂとからなる。差動増幅回路６７には第２の基準電圧
が入力され、また、直流増幅回路６８には第１の基準電
圧が入力される。上記各回路へは、直流電圧を定電圧化
する電源回路５５により給電される。By the way, as shown in FIG. 5, the light emitting element ED is driven by an oscillation circuit 51 and a drive circuit 52 so as to intermittently light up at a substantially constant period. On the other hand, the received light signal of the current output corresponding to the amount of light received by the light receiving element LD has a very high input impedance formed by using an operational amplifier circuit and a very high feedback resistance (about 100 MΩ) current-voltage conversion. It is converted into a voltage output corresponding to the amount of received light through the circuit 61. After that, the received light signal converted into the voltage output passes through the bandpass filter 62 and is further clipped by the peak cut circuit 63 to remove the noise component. In this way, after removing the noise component from the received light signal, the received light signal is input to the sample hold circuit 64, and the received light signal is output based on the output of the oscillation circuit 51 so as to be synchronized with the lighting timing of the light emitting element ED. The voltage value of the light receiving signal is held until the next light receiving signal is input. Then, the output of the sample hold circuit 64,
A light receiving signal is provided by including a differential amplifier circuit 67 that corrects by taking the difference from the reference voltage output from the reference voltage generating circuit 66, and amplifying the output of the differential amplifier circuit 67 by the DC amplifier circuit 68. It is configured so that a continuous output corresponding to can be obtained. The reference voltage generation circuit 66 outputs a second reference voltage based on the first reference voltage generation unit 66a that divides the power supply voltage and the first reference voltage output from the first reference voltage generation circuit 66a. 2 Reference voltage generation circuit 6
6b and. The second reference voltage is input to the differential amplifier circuit 67, and the first reference voltage is input to the DC amplifier circuit 68. Power is supplied to each of the above circuits by a power supply circuit 55 that converts the DC voltage into a constant voltage.
【００１０】第２実施例として、前述の第１実施例に付
加した形で、火災の発生の断定をより確実に行う方策と
して、粉塵の発生を検知する区域全体の温度を検知する
温度センサ８８と、その出力をディジタル値に変換する
Ａ／Ｄ変換回路８９を図６に示すように設け、信号処理
回路８２に入力する。信号処理プログラムとしては、火
災発生時の浮遊粉塵濃度レベルの信号と、急激な温度変
化信号が同時に発生した時点のみをとらえて温度検知回
路１００が警報出力回路８５を起動し警報出力する。温
度の検出は空気清浄器に内蔵されたファンにより吸引さ
れた空気にて行う様、前述のバイパス通路にサ−ミスタ
などの温度センサを設けて行う。As a second embodiment, a temperature sensor 88 for detecting the temperature of the whole area for detecting the generation of dust is added to the above-described first embodiment as a measure for more reliably determining the occurrence of fire. Then, an A / D conversion circuit 89 for converting its output into a digital value is provided as shown in FIG. 6, and is input to the signal processing circuit 82. As the signal processing program, the temperature detection circuit 100 activates the alarm output circuit 85 and outputs an alarm by capturing only the time when the signal of the floating dust concentration level at the time of fire occurrence and the sudden temperature change signal are simultaneously generated. A temperature sensor such as a thermistor is provided in the bypass passage so that the temperature is detected by the air sucked by the fan incorporated in the air purifier.
【００１１】又、第３実施例として、図７に示すように
焦電式の人体検知センサ１０１を設け、部屋全体を検知
エリアとし、人体の微小な動きにて発生する電圧出力を
増幅し、Ａ／Ｄ変換回路８９に入力し、信号処理プログ
ラムとしては、火災発生時の煙濃度レベルの浮遊粉塵量
と、人体の動きの全く無い状態が、一定時間継続した時
点のみをとらえて人体検知回路１０２が警報出力回路８
５を起動し警報出力しても良い。Further, as a third embodiment, as shown in FIG. 7, a pyroelectric type human body detection sensor 101 is provided, the entire room is used as a detection area, and the voltage output generated by a minute movement of the human body is amplified. The signal is input to the A / D conversion circuit 89, and the signal processing program includes a human body detection circuit that captures only the time when the amount of floating dust at the smoke concentration level when a fire occurs and the state where there is no movement of the human body continues for a certain time 102 is the alarm output circuit 8
5 may be activated to output an alarm.
【００１２】前述、第１〜第３の実施例においては警報
装置として、空気清浄器に内蔵された警報音出力及び表
示装置を用いたが、第４の実施例として、図８に示すよ
うに移報接点を有する接点出力回路９０のみの警報出力
としても良い。接点出力により、異常警報を使用したい
人、あるいは離れた場所にいて、異常の発生を知りたい
時に同様の効果がロ−コストにて期待出来るのである。Although the alarm sound output and display device built in the air purifier is used as the alarm device in the above-described first to third embodiments, as shown in FIG. 8 as the fourth embodiment. The alarm output may be provided only by the contact output circuit 90 having a transfer contact. With the contact output, the same effect can be expected at low cost when a person who wants to use the abnormality alarm or at a remote place wants to know the occurrence of the abnormality.
【００１３】又、第５、第６実施例として、システム的
に省配線式あるいは、ワイアレス式等、異常監視システ
ムに適合する信号発信器を内蔵し、該信号発信器を介し
て異常状態を伝達する、ワイアレス信号発生装置９２
（図１０参照）あるいは多重伝送信号発生装置９１（図
９参照）を構成することにより住環境に欠かせないセン
サ装置をより多くの用途に省配線式システム的な利用が
可能となり、ト−タルシステムとしてのロ−コスト化が
更に期待できるのである。In addition, as the fifth and sixth embodiments, a signal transmitter suitable for an abnormality monitoring system such as a wire-saving type or a wireless type is built in, and an abnormal state is transmitted through the signal oscillator. Yes, wireless signal generator 92
(See FIG. 10) Or by configuring the multiplex transmission signal generator 91 (see FIG. 9), the sensor device indispensable to the living environment can be used for more purposes like a wire-saving system, and the total can be used. The low cost of the system can be further expected.
【００１４】[0014]
【発明の効果】上述のように、請求項１の構成によれ
ば、空気清浄器の空気の汚れセンサとして、光電式粉塵
センサを用い、空気の汚れ具合に応じたファン駆動制御
を行うと共に、異常な粉塵濃度の検出により、警報を発
する機能を一体化したので、防災用センサの設置に伴う
費用の軽減が可能となる。又、防災用センサとしては、
簡易火災警報器の類に該当する機器の設置場所は一般
に、天井が主であるが、形状も大きく室内の美観を損ね
るといった問題点が解決できる。請求項２の構成によれ
ば、急激な温度の変化と異常な粉塵濃度の検出を同時に
検出した時のみを火災と断定することにより、灰皿のタ
バコの火の消し忘れ等、火災の発生以外の異常な浮遊粉
塵濃度の時点における、誤報の防止につながるという利
点がある。請求項３の構成によれば、人の不在あるいは
睡眠状態の検出と、異状な浮遊粉塵濃度の発生を同時に
検出した時のみ火災と断定することにより、誤報の防止
と同時に、不用意の寝タバコなどによる人身事故につな
がる火災発生の防止が可能となる。請求項４の構成によ
れば、異常の発生を知りたい使用条件においてのみ、必
要に応じた警報音発生装置あるいは、表示装置を設置す
ることが可能で空気清浄器本体のコストを大きく上げる
ことなく付加機能が達成でき、また離れた場所において
も、異常の発生を知ることも可能となる利点もある。請
求項５の構成によれば、空気清浄器の設置のみで、同時
に火災の発生をシステム的に検知が可能となり、火災検
知システム全体において固有のセンサの設置個数の削減
が実現し、空気清浄器に内蔵されたセンサユニットの効
果的な利用によりシステム全体としてのロ−コスト化が
可能となる利点がある。請求項６の構成によれば、請求
項４の構成による利点の実現と同時に、異常の発生を知
るところのシステムの配線工事が不要となり、配線の露
出に伴う室内の美観の低下もなく、可搬式の空気清浄器
を本体にした、システム化も可能となり、個人を対象、
あるいは既設住宅を前提としたシステムの実現が可能と
なる利点がある。As described above, according to the first aspect of the present invention, the photoelectric dust sensor is used as the air contamination sensor of the air purifier, and the fan drive control is performed according to the degree of contamination of the air. Since the function that issues an alarm when an abnormal dust concentration is detected is integrated, it is possible to reduce the cost associated with installing a disaster prevention sensor. Also, as a disaster prevention sensor,
Generally, the main place of installation of devices corresponding to simple fire alarms is on the ceiling, but the problem is that the shape is large and the aesthetics of the room are impaired. According to the configuration of claim 2, it is determined that a fire occurs only when a rapid temperature change and an abnormal dust concentration are detected at the same time. There is an advantage that false alarms can be prevented at the time of abnormal airborne dust concentration. According to the configuration of claim 3, it is determined that a fire occurs only when the absence or sleep state of a person is detected and the occurrence of an abnormal airborne dust concentration is detected at the same time. It is possible to prevent fires that could lead to personal injury. According to the configuration of claim 4, it is possible to install the alarm sound generating device or the display device as needed only under the use condition in which it is desired to know the occurrence of the abnormality, and without significantly increasing the cost of the air purifier body. There is also an advantage that the additional function can be achieved, and the occurrence of the abnormality can be known even at a remote place. According to the configuration of claim 5, it is possible to simultaneously systematically detect the occurrence of a fire only by installing the air purifier, and it is possible to reduce the number of unique sensors installed in the entire fire detection system. There is an advantage that the low cost of the entire system can be realized by effectively using the sensor unit built in the. According to the configuration of claim 6, at the same time as realizing the advantage of the configuration of claim 4, the wiring work of the system for knowing the occurrence of an abnormality is unnecessary, and the appearance of the room is not deteriorated due to the exposure of the wiring. With a portable air purifier as the main body, systemization is also possible, targeting individuals,
Alternatively, there is an advantage that it is possible to realize a system based on existing houses.
【図１】本発明の空気清浄器全体の分解斜視図である。FIG. 1 is an exploded perspective view of the entire air purifier of the present invention.
【図２】本発明の第１実施例の回路構成図である。FIG. 2 is a circuit configuration diagram of a first embodiment of the present invention.
【図３】本発明に用いる光電式粉塵センサのカバ−を外
した状態の正面図である。FIG. 3 is a front view of the photoelectric dust sensor used in the present invention with the cover removed.
【図４】本発明に用いる光電式粉塵センサの縦断面図で
ある。FIG. 4 is a vertical sectional view of a photoelectric dust sensor used in the present invention.
【図５】本発明に用いる光電式粉塵センサの回路ブロッ
ク図である。FIG. 5 is a circuit block diagram of a photoelectric dust sensor used in the present invention.
【図６】本発明の第２の実施例の回路構成図である。FIG. 6 is a circuit configuration diagram of a second embodiment of the present invention.
【図７】本発明の第３の実施例の回路構成図である。FIG. 7 is a circuit configuration diagram of a third embodiment of the present invention.
【図８】本発明の第４実施例の回路構成図である。FIG. 8 is a circuit configuration diagram of a fourth embodiment of the present invention.
【図９】本発明の第５実施例の回路構成図である。FIG. 9 is a circuit configuration diagram of a fifth embodiment of the present invention.
【図１０】本発明の第６実施例の回路構成図である。FIG. 10 is a circuit configuration diagram of a sixth embodiment of the present invention.
Ａ・・・光電式粉塵センサ Ｂ・・・空気清浄器 ＥＤ・・・発光素子（発光器） ＬＤ・・・受光素子（受光器） ７１・・・きょう体 ７２・・・ファン ７３・・・前面カバー ７４・・・フィルタホルダ ７５ａ、７５ｂ・・・フィルタ ７６・・・吹出口 ８１・・・Ａ／Ｄ変換回路 ８２・・・信号処理回路 ８３・・・ファンモータ駆動出力回路 ８４・・・ファンモータ ８５・・・警報出力回路 ８６・・・音出力装置 ８７・・・表示出力装置 ８８・・・温度センサ ８９・・・Ａ／Ｄ変換回路 ９０・・・接点出力回路 ９１・・・多重伝送信号発生装置 ９２・・・ワイヤレス信号発生装置 １００・・・温度検知回路 １０１・・・焦電式人体検知センサ １０２・・・人体検知回路 A: Photoelectric dust sensor B: Air purifier ED: Light emitting element (light emitter) LD: Light receiving element (light receiver) 71 ... Today's body 72 ... fan 73 ... Front cover 74 ... Filter holder 75a, 75b ... Filter 76 ... Outlet 81 ... A / D conversion circuit 82 ... Signal processing circuit 83 ... Fan motor drive output circuit 84: Fan motor 85: Alarm output circuit 86 ... Sound output device 87. Display output device 88 ... Temperature sensor 89 ... A / D conversion circuit 90 ... Contact output circuit 91 ... Multiple transmission signal generator 92 ... Wireless signal generator 100 ... Temperature detection circuit 101 ... Pyroelectric human body detection sensor 102 ... Human body detection circuit
Claims (6)
光器から発する光が浮遊粉塵に当たって拡散反射する散
乱光を受光器に集光して検知する光電式粉塵センサを有
する空気清浄器において、前記光電式粉塵センサ内で、
前記受光器の受光電流をＩ／Ｖ変換、増幅、検波、積分
及びＤＣ増幅し、得た電圧値を、Ａ／Ｄ変換回路を介し
て、空気清浄器のファン駆動用モ−タの回転制御を行な
う信号処理回路に、入力し、異常な粉塵濃度を検出した
時点には警報音を発生する出力装置を設けたことを特徴
とする空気清浄器。1. An air purifier having a photoelectric dust sensor as a sensor for detecting dirt on air, which detects scattered light diffused and reflected by light emitted from a light-emitting device on a light-receiving device. In the photoelectric dust sensor,
I / V conversion, amplification, detection, integration and DC amplification of the received light of the light receiver, and the obtained voltage value is controlled to rotate the fan drive motor of the air purifier through the A / D conversion circuit. An air purifier characterized by being provided with an output device for generating an alarm sound when an abnormal dust concentration is detected and input to a signal processing circuit for performing the above.
号をＡ／Ｄ変換回路を介して信号処理回路に入力し、粉
塵量に相当する電圧値をＡ／Ｄ変換回路を介して入力さ
れた値と比較し、その結果において、警報を発生する出
力回路を起動する温度検知回路を備えたことを特徴とす
る請求項１項記載の空気清浄器。2. A value obtained by inputting a temperature output signal detected by a temperature sensor into a signal processing circuit via an A / D conversion circuit, and by inputting a voltage value corresponding to the amount of dust through the A / D conversion circuit. The air purifier according to claim 1, further comprising a temperature detection circuit that activates an output circuit that generates an alarm in comparison with the above.
電圧信号をＡ／Ｄ変換回路を介して信号処理回路に入力
し、粉塵量に相当する電圧値をＡ／Ｄ変換回路を介して
入力された値と比較し、その結果において警報を発生す
る出力回路を起動する人体検知回路を備えたことを特徴
とする請求項１項記載の空気清浄器。3. A voltage signal detected by a pyroelectric human body detection sensor is input to a signal processing circuit via an A / D conversion circuit, and a voltage value corresponding to the amount of dust is input via an A / D conversion circuit. The air purifier according to claim 1, further comprising a human body detection circuit that activates an output circuit that compares the measured value with an output value and outputs an alarm as a result.
する出力が、移報接点であることを特徴とする請求項１
〜３項のいずれかに記載の空気清浄器。4. An output generated when an abnormal dust concentration is detected is a transfer contact.
An air purifier according to any one of items 1 to 3.
を特徴とする請求項１〜３項のいずれかに記載の空気清
浄器。5. The air purifier according to claim 1, wherein the output is a multiplex transmission signal.
る電波信号であることを特徴とする請求項１〜３項のい
ずれかに記載の空気清浄器。6. The air purifier according to claim 1, wherein the output is a radio wave signal by wireless signal transmission.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3216238A JP3030476B2 (en) | 1991-07-31 | 1991-07-31 | air purifier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3216238A JP3030476B2 (en) | 1991-07-31 | 1991-07-31 | air purifier |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0531314A true JPH0531314A (en) | 1993-02-09 |
| JP3030476B2 JP3030476B2 (en) | 2000-04-10 |
Family
ID=16685443
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3216238A Expired - Lifetime JP3030476B2 (en) | 1991-07-31 | 1991-07-31 | air purifier |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3030476B2 (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0989755A (en) * | 1995-09-20 | 1997-04-04 | Nec Corp | Detection apparatus for particles |
| US6228155B1 (en) * | 1999-08-24 | 2001-05-08 | Kuo Cheng Tai | Automatic detection and warning device of filtering net in air conditioner |
| JP2002186816A (en) * | 2000-12-19 | 2002-07-02 | Ricoh Elemex Corp | Air cleaner |
| JP2006323577A (en) * | 2005-05-18 | 2006-11-30 | Daiken Trade & Ind Co Ltd | Alarm-installation structure |
| CN104914023A (en) * | 2015-05-14 | 2015-09-16 | 常熟市德虞矿山机电有限公司 | Dust environment simulation device |
| CN117746566A (en) * | 2024-02-18 | 2024-03-22 | 莱芜上业机械设备有限公司 | Smoke alarm device |
-
1991
- 1991-07-31 JP JP3216238A patent/JP3030476B2/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0989755A (en) * | 1995-09-20 | 1997-04-04 | Nec Corp | Detection apparatus for particles |
| US6228155B1 (en) * | 1999-08-24 | 2001-05-08 | Kuo Cheng Tai | Automatic detection and warning device of filtering net in air conditioner |
| JP2002186816A (en) * | 2000-12-19 | 2002-07-02 | Ricoh Elemex Corp | Air cleaner |
| JP2006323577A (en) * | 2005-05-18 | 2006-11-30 | Daiken Trade & Ind Co Ltd | Alarm-installation structure |
| CN104914023A (en) * | 2015-05-14 | 2015-09-16 | 常熟市德虞矿山机电有限公司 | Dust environment simulation device |
| CN117746566A (en) * | 2024-02-18 | 2024-03-22 | 莱芜上业机械设备有限公司 | Smoke alarm device |
| CN117746566B (en) * | 2024-02-18 | 2024-05-07 | 莱芜上业机械设备有限公司 | Smoke alarm device |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3030476B2 (en) | 2000-04-10 |
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