JP2584162C

JP2584162C -

Info

Publication number: JP2584162C
Authority: JP
Original assignee: 松下精工株式会社
Publication date: 1999-09-06

Description

【発明の詳細な説明】【０００１】【産業上の利用分野】本発明は、室内で発生するたばこ等の煙に応じて、換気扇を自動的に運転させ
る換気扇の自動運転装置に関するものである。【０００２】【従来の技術】近年、室内の換気を目的とした換気扇は、室内の環境の変化に対応し、たとえ
ば、室内で発生するたばこの煙等に応じて自動運転する等の自動運転装置付きの
ものが主流になりつつある。【０００３】従来のこの種の換気扇の自動運転装置は、一般に図３に示すように、室内１０
１の天井面１０２に設置され、一側面に吐出口１０３と下面に吸い込み口１０４
とを有した換気扇１０５の吸い込み口１０４近傍に、室内１０１の煙濃度を検知
する煙センサ１０６を設け、この煙センサ１０６の検知信号が基準値以上になる
と換気扇１０５を運転させ、室内１０１の汚れた空気を吸い込み口１０４から吸
い込んで吐出口１０３から室外（図示せず）へ排出し、煙センサ１０６の検知信
号が基準値以下になると換気扇１０５を停止させていた。【０００４】【発明が解決しようとする課題】このような従来の換気扇の白動運転装置では、換気扇１０５を設置する室内１０１が広かったり、換気扇１０５の設置位置が高かったりして、煙センサ１０６
と煙発生源との距離が遠く離れ、煙が煙センサ１０６まで到達せずに使用者付近
と煙センサ１０６付近との空気の煙濃度にむらができる場合には、使用者付近で
は空気が汚れているにもかかわらず、換気扇１０５が停止したままになり、使用
者の存在する雰囲気に対応した換気ができないという課題があった。【０００５】本発明は上記課題を解決するもので、換気扇を設置する室内が広かったり、換
気扇の設置位置が高かったりして、煙センサと煙発生源との距離が遠く離れ、煙
が煙センサまで到達せずに使用者付近と煙センサ付近との空気の煙濃度にむらが
できるのを防止し、使用者の存在する雰囲気に対応した換気ができる換気扇の自
動運転装置を提供することを目的としている。【０００６】【課題を解決するための手段】本発明は上記目的を達成するために、室内の煙濃度を検知する煙センサと、こ
の煙センサの検知信号にもとづいて、換気扇を運転または停止させる第１の運転
手段と、前記換気扇が一定時間停止したままの状態が続いた場合に前記換気扇運
転する第２の運転手段とを備え、この第２の運転手段で所定時間前記換気扇を運
転することで、室内気の煙濃度が均一になるようにした構成としたものである。【０００７】【作用】本発明は上記した構成により、室内で発生した煙が煙センサまで到達せず、使
用者付近と煙センサ付近との空気の煙濃度にむらができ、換気扇が一定時間停止
したままになると、第２の運転手段が換気扇を所定時間運転させ、使用者付近の
汚れた空気を煙センサ付近へ導くとともに、室内気の煙濃度を均一にし、汚れた
空気を確実に室外へ排出することができる。【０００８】【実施例】以下、本発明の一実施例について、図１および図２を参照しながら説明する。【０００９】図１に示すように、室内１の天井面２に設置され、一側面に吐出口３と下面に
吸い込み口４とを有した換気扇５の吸い込み口４近傍には、室内１の煙濃度を検
知する煙センサ６が設けてある。そして、煙センサ６の検知信号を第１の運転手
段７に入力している。第１の運転手段７では、煙センサ６の検知信号にもとづい
て換気扇５の運転、停止を行う。一方、換気扇５を設置する室内１が広かったり
、換気扇５の設置位置が高かったりして、煙センサ６と煙発生源との距離が遠く
離れ、煙が煙センサ６まで到達せずに使用者付近と煙センサ６付近との空気の煙
濃度にむらができ換気扇５が一定時間停止したままの状態が続いた場合には、使
用者付近の汚れた空気を煙センサ６付近へ導くとともに、室内気の煙濃度を均一
にすることのできる一定時間だけ換気扇５を運転させる第２の運転手段８が備え
られている。なお、第１の運転手段７および第２の運転手段８をマイクロコンピ
ュータ９で実現している。【００１０】上記構成における換気扇の自動運転装置の動作を図１および図２を参照しなが
ら説明する。【００１１】まず、ステップ２１でマイクロコンピュータ９に室内１の煙濃度「Ａｐｐｍ」
を入力し、つぎに、ステップ２２で煙濃度「Ａｐｐｍ」を、あらかじめマイクロ
コンピュータ９に記憶しておいた基準煙濃度「Ｂｐｐｍ」と比較する。つぎに、
ステップ２３で煙濃度「Ａｐｐｍ」は基準煙濃度「Ｂｐｐｍ」以上と判断した場
合は、ステップ２４へ進み換気扇５を運転し、ステップ２１へ戻る。また、ステ
ップ２３で煙濃度「Ａｐｐｍ」は基準煙濃度「Ｂｐｐｍ」以下と判断した場合に
は、ステップ２５へ進み換気扇５を停止し、つぎにステップ２６で換気扇５の停
止時間「Ａｓｅｃ」を計測し、つぎに、ステップ２７で停止時間「Ａｓｅｃ」を
あらかじめマイクロコンピュータ９に記憶しておいた基準停止時間「Ｂｓｅｃ」
と比較する。つぎに、ステップ２８で停止時間「Ａｓｅｃ」は基準停止時間「Ｂ
ｓｅｃ」を経過していないと判断した場合は、ステップ２１へ戻る。また、ステ
ップ２８で停止時間「Ａｓｅｃ」は基準停止時間「Ｂｓｅｃ」を経過していると
判断した場合には、換気扇５を所定時間運転し、ステップ２１へ戻る。【００１２】このように、本発明の換気扇の自動運転装置によれば、室内１で発生した煙が
煙センサ６まで到達せずに、使用者付近と煙センサ６付近との空気の煙濃度にむ
らができ、換気扇５が一定時間停止したままになると、換気扇５を所定時間運転
し、使用者付近の汚れた空気を煙センサ６付近へ導くとともに、室内気の煙濃度
を均一にし、汚れた空気を確実に室外へ排出することができる。【００１３】【発明の効果】以上の実施例の説明から明らかなように本発明によれば、換気扇を設置する室
内が広かったり、換気扇の設置位置が高かったりして、煙センサと煙発生源との
距離が遠く離れ、煙が煙センサまで到達せずに使用者付近と煙センサ付近との空
気の煙濃度にむらができるのを防止し、使用者に対応した換気ができる換気扇の
自動運転装置を提供できる。Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic operation device of a ventilation fan for automatically operating a ventilation fan in response to smoke such as tobacco generated indoors. 2. Description of the Related Art In recent years, a ventilation fan intended for indoor ventilation responds to changes in the indoor environment and, for example, automatically operates in response to tobacco smoke or the like generated indoors. Those with are becoming mainstream. A conventional automatic operation device for a ventilation fan of this type generally includes a room 10 as shown in FIG.
1 is installed on a ceiling surface 102, and a discharge port 103 is provided on one side and a suction port 104 is provided on a lower surface.
A smoke sensor 106 for detecting the smoke density in the room 101 is provided in the vicinity of the suction port 104 of the ventilation fan 105 having the following. When the detection signal of the smoke sensor 106 exceeds a reference value, the ventilation fan 105 is operated, and The sucked air is sucked from the suction port 104 and discharged from the discharge port 103 to the outside (not shown). When the detection signal of the smoke sensor 106 becomes equal to or less than the reference value, the ventilation fan 105 is stopped. [0004] In such a conventional whitening operation device for a ventilation fan, a smoke sensor is installed because the room 101 in which the ventilation fan 105 is installed is wide or the installation position of the ventilation fan 105 is high. 106
If the smoke is far from the smoke source, and the smoke does not reach the smoke sensor 106 and the smoke density of the air near the user and near the smoke sensor 106 becomes uneven, the air becomes dirty near the user. However, there is a problem that the ventilation fan 105 remains stopped, and ventilation corresponding to the atmosphere where the user exists cannot be performed. The present invention has been made to solve the above-mentioned problem, and the room where a ventilation fan is installed is wide, or the installation position of the ventilation fan is high, so that the distance between the smoke sensor and the smoke generation source is far away, and the smoke is removed from the smoke sensor. The purpose of the present invention is to provide an automatic operation device of a ventilation fan that can prevent unevenness in the smoke density of air between the vicinity of a user and a smoke sensor without reaching the space, and can perform ventilation corresponding to the atmosphere where the user exists. And [0006] In order to achieve the above object, the present invention provides a smoke sensor for detecting indoor smoke density , and operates or stops a ventilation fan based on a detection signal of the smoke sensor. a first operating unit, the ventilating fan comprises a second operating means for pre-Symbol ventilation Ogiun <br/> rolling when continued remains stopped a predetermined time, predetermined by the second driving means Run the ventilation fan for hours
By turning, the smoke density of the room air is made uniform . According to the present invention, the smoke generated in the room does not reach the smoke sensor, the air smoke density in the vicinity of the user and in the vicinity of the smoke sensor becomes uneven, and the ventilation fan stops for a certain period of time. When it is kept on, the second operating means operates the ventilation fan for a predetermined time, guides the dirty air near the user to the vicinity of the smoke sensor, makes the smoke concentration of the indoor air uniform, and reliably removes the dirty air to the outside. Can be discharged. An embodiment of the present invention will be described below with reference to FIGS. 1 and 2. As shown in FIG. 1, near the suction port 4 of the ventilation fan 5 which is installed on the ceiling surface 2 of the room 1 and has a discharge port 3 on one side and a suction port 4 on the lower surface, the smoke in the room 1 A smoke sensor 6 for detecting the density is provided. Then, the detection signal of the smoke sensor 6 is input to the first operating means 7. The first operating means 7 operates and stops the ventilation fan 5 based on the detection signal of the smoke sensor 6. On the other hand, the room 1 where the ventilation fan 5 is installed is wide, or the installation position of the ventilation fan 5 is high, so that the distance between the smoke sensor 6 and the smoke generation source is far away, and the user does not reach the smoke sensor 6 without the smoke reaching the smoke sensor 6. When the smoke density of the air between the vicinity and the vicinity of the smoke sensor 6 becomes uneven and the state in which the ventilation fan 5 is stopped for a certain period of time continues, the dirty air near the user is guided to the vicinity of the smoke sensor 6 and the indoor space. A second operating means 8 for operating the ventilation fan 5 for a certain period of time to make the concentration of smoke in the air uniform is provided. The first operating means 7 and the second operating means 8 are realized by a microcomputer 9. The operation of the automatic operation device of the ventilation fan having the above configuration will be described with reference to FIGS. 1 and 2. First, in step 21, the microcomputer 9 sends the smoke concentration “Appm” of the room 1 to the microcomputer 9.
Then, in step 22, the smoke density “Appm” is compared with the reference smoke density “Bppm” stored in the microcomputer 9 in advance. Next,
If it is determined in step 23 that the smoke concentration “Appm” is equal to or higher than the reference smoke concentration “Bppm”, the process proceeds to step 24 to operate the ventilation fan 5 and returns to step 21. If it is determined in step 23 that the smoke concentration "Appm" is equal to or less than the reference smoke concentration "Bppm", the process proceeds to step 25, in which the ventilation fan 5 is stopped. Then, in step 26, the stop time "Asec" of the ventilation fan 5 is measured. Then, in step 27, the stop time "Asec" is stored in the microcomputer 9 in advance, and the reference stop time "Bsec" is stored.
Compare with Next, in step 28, the stop time “Asec” is changed to the reference stop time “B
If it is determined that “sec” has not elapsed, the process returns to step 21. If it is determined in step 28 that the stop time “Asec” has passed the reference stop time “Bsec”, the ventilation fan 5 is operated for a predetermined time, and the process returns to step 21. As described above, according to the automatic operation device of the ventilation fan of the present invention, the smoke generated in the room 1 does not reach the smoke sensor 6 and the smoke density of the air near the user and the smoke sensor 6 is reduced. When the ventilation fan 5 is stopped for a certain period of time, the ventilation fan 5 is operated for a predetermined period of time to guide the dirty air near the user to the vicinity of the smoke sensor 6 and to make the smoke concentration of the indoor air uniform, thereby making the room dirty. The air can be reliably discharged outside the room. As is apparent from the above description of the embodiment, according to the present invention, the room where the ventilation fan is installed is wide, or the installation position of the ventilation fan is high, so that the smoke sensor and the smoke generation source The automatic operation of a ventilation fan that prevents the smoke from reaching the smoke sensor and creating uneven air density between the user and the vicinity of the smoke sensor, and provides ventilation suitable for the user Equipment can be provided.

【図面の簡単な説明】【図１】本発明の一実施例の換気扇の自動運転装置のブロック図【図２】同プログラムのフローチャート【図３】従来の換気扇の自動運転装置の構成図【符号の説明】５換気扇６煙センサ７第１の運転手段８第２の運転手段[Brief description of the drawings] FIG. 1 is a block diagram of an automatic operation device for a ventilation fan according to an embodiment of the present invention. FIG. 2 Flow chart of the program FIG. 3 Configuration diagram of conventional automatic ventilation fan operation device [Explanation of symbols] 5 Ventilation fan 6 Smoke sensor 7 First operating means 8 Second driving means

Claims

Claims: 1. A smoke sensor for detecting indoor smoke density, first operating means for operating or stopping a ventilation fan based on a detection signal of the smoke sensor, and the ventilation fan for a predetermined time. A second operating means for operating the ventilation fan when the state of stopping is continued, and by operating the ventilation fan for a predetermined time with the second operating means,
Automatic operation device of ventilation fan which made the smoke density of air uniform .