JPH11287196A - Air blower with failure alarm - Google Patents

Air blower with failure alarm

Info

Publication number
JPH11287196A
JPH11287196A JP8842698A JP8842698A JPH11287196A JP H11287196 A JPH11287196 A JP H11287196A JP 8842698 A JP8842698 A JP 8842698A JP 8842698 A JP8842698 A JP 8842698A JP H11287196 A JPH11287196 A JP H11287196A
Authority
JP
Japan
Prior art keywords
relay
blower
motor
outside
contact
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
Application number
JP8842698A
Other languages
Japanese (ja)
Other versions
JP4324254B2 (en
Inventor
Koji Okada
幸司 岡田
Masayuki Fujio
正行 藤生
Wataru Koike
渡 小池
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP08842698A priority Critical patent/JP4324254B2/en
Publication of JPH11287196A publication Critical patent/JPH11287196A/en
Application granted granted Critical
Publication of JP4324254B2 publication Critical patent/JP4324254B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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  • Control Of Positive-Displacement Air Blowers (AREA)
  • Control Of Positive-Displacement Pumps (AREA)

Abstract

PROBLEM TO BE SOLVED: To simplify a device at a low cost by operating a relay arranged on an air blower main body interlocking with an over heating and excessive current protecting relay, or an over heating and excessive current protecting fuse, and outputting an alarm signal for informing failure to an outside. SOLUTION: When a relay for protecting over heating and excessive current, or a fuse 2 for protecting over heating and excessive current is operated and opened, voltage of a primary winding MCOIL of an electric motor is not applied, and voltage is also not applied on a coil of a relay 6 connected to the primary winding MCOIL in parallel. In a contact point of the relay 6, a side (b) is a closing condition, and a side (a) is an opening condition. In a coil of the relay 7 connected to a contact point (b) of the relay 6, voltage is applied from a power supply to a main power supply switch 8, from a common point of the relay 6 to a contact point (b), from a coil of the relay 7 to the main power supply switch 8, and to the power supply in order. Thereby, a side (a) is a closing condition in a contact point of the relay 7. An outside alarm contact point 9 is outputted to an outside, and abnormal condition of the electric motor is detected by a protecting circuit and an alarm device.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【０００１】[0001]

【発明の属する技術分野】本発明は、吸気用や排気用な
どに使用される汎用の送風機に係り、特に機器の冷却や
遠隔操作を必要とする時などに使用され、故障した場
合、外部へ故障を知らせる必要のある送風機において、
簡単かつ安価に警報信号を出すことの出来る送風機に関
する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a general-purpose blower used for intake and exhaust, and is used particularly when cooling or remote control of equipment is required. For blowers that need to be notified of failure,
The present invention relates to a blower that can easily and inexpensively issue an alarm signal.

【０００２】[0002]

【従来の技術】図１に、過熱、過電流保護リレーもしく
は過熱、過電流保護ヒューズが内部に設けられた送風機
駆動用電動機を備えた従来の送風機の一般的な構造を示
す。2. Description of the Related Art FIG. 1 shows a general structure of a conventional blower provided with an overheat / overcurrent protection relay or a blower driving motor in which an overheat / overcurrent protection fuse is provided.

【０００３】この図１において、１は送風機の電動機
（FAN MOTOR）、２は１の電動機に設けられた過熱、過
電流保護リレーもしくは過熱、過電流保護ヒューズなど
の電流遮断手段である。M COIL は電動機一次巻線を示
している。過熱、過電流保護リレーもしくは過熱、過電
流保護ヒューズ２の一端と電動機一次巻線 M COIL の一
端は接続され、それぞれ他端は電源に接続される。In FIG. 1, reference numeral 1 denotes a fan motor (FAN MOTOR), and reference numeral 2 denotes a current interrupting means such as an overheat / overcurrent protection relay or an overheat / overcurrent protection fuse provided in the 1 motor. M COIL indicates the primary winding of the motor. One end of the overheat / overcurrent protection relay or the overheat / overcurrent protection fuse 2 and one end of the motor primary winding M COIL are connected, and the other end is connected to a power supply.

【０００４】送風機の電動機１は、過負荷、過電流、拘
束運転などをした場合、電動機に過熱、過電流保護リレ
ーもしくは過熱、過電流保護ヒューズ２を設けることに
より、電動機の焼損を防いでいる。過熱、過電流保護リ
レーの信号は外部の保護回路へ入力され、送風機の電動
機１と電源の接続を遮断するなどの保護動作により、電
動機は焼損を防止される。図１の従来技術の場合、過
熱、過電流保護ヒューズ２で電動機は保護されるように
なっているが、外部に過熱、過電流保護ヒューズ２が動
作したことは知らされない。In the case of overload, overcurrent, restraint operation, etc., the blower motor 1 is provided with an overheat / overcurrent protection relay or overheat / overcurrent protection fuse 2 to prevent the motor from burning. . The signal of the overheat / overcurrent protection relay is input to an external protection circuit, and the motor is prevented from being burned out by a protection operation such as cutting off the connection between the motor 1 of the blower and the power supply. In the case of the prior art shown in FIG. 1, the motor is protected by the overheat / overcurrent protection fuse 2, but it is not notified to the outside that the overheat / overcurrent protection fuse 2 has been operated.

【０００５】また、図２に従来からの送風機の故障を外
部へ知らせる構造を示す。FIG. 2 shows a structure for notifying a failure of a conventional blower to the outside.

【０００６】この図２において、３は電磁開閉器やサー
マルリレーなどの保護機器、４は３の電磁開閉器やサー
マルリレーに連動して故障を外部へ知らせる機器であ
る。In FIG. 2, reference numeral 3 denotes a protection device such as an electromagnetic switch and a thermal relay, and reference numeral 4 denotes a device for notifying the failure to the outside in conjunction with the electromagnetic switch and the thermal relay.

【０００７】これらは送風機１の外部に、電動機の内部
に備わった過熱、過電流保護ヒューズ２とは別に、電磁
開閉器やサーマルリレーなどの保護機器３を送風機の外
部に設け、それらに連動させて故障を外部（警報装置な
ど）へ知らせるものである。[0007] Apart from the overheat and overcurrent protection fuses 2 provided inside the motor, protection devices 3 such as an electromagnetic switch and a thermal relay are provided outside the blower 1 outside the blower 1 and linked to them. To notify the failure to the outside (such as an alarm device).

【０００８】すなわち、送風機１の故障を外部へ知らせ
るために、故障を検出する目的の機器３や４を送風機１
の外部に接続することが従来より行われている。That is, in order to notify the failure of the blower 1 to the outside, the equipment 3 or 4 for detecting the failure is connected to the blower 1.
Has been conventionally connected to the outside.

【０００９】また、従来より、過負荷、過電流、拘束運
転などなんらかの理由で送風機１が駆動しないことを外
部へ知らせるために、送風機１に回転センサや制御回路
を用いて警報信号を出すことが知られている。Further, conventionally, in order to notify the outside that the blower 1 is not driven for some reason such as overload, overcurrent, restraint operation, etc., an alarm signal is issued to the blower 1 using a rotation sensor or a control circuit. Are known.

【００１０】[0010]

【発明が解決しようとする課題】上記従来の技術は、送
風機とその故障を検出する目的の機器を別々に接続して
設置なければならない。また、送風機に回転センサや、
抵抗、コンデンサ、トランジスタなどを用いた制御回路
を用いるので、複雑、高価なものとなる。In the above-mentioned conventional technique, the blower and the equipment for detecting the failure of the blower must be separately connected and installed. In addition, a rotation sensor,
Since a control circuit using a resistor, a capacitor, a transistor and the like is used, the circuit becomes complicated and expensive.

【００１１】[0011]

【課題を解決するための手段】本発明は、電動機により
駆動される送風機が、過負荷、過電流、拘束運転などな
んらかの理由で駆動しない場合、電動機に設けられた過
熱、過電流保護リレーもしくは過熱、過電流保護ヒュー
ズに連動して送風機本体に設けられた継電器を動作さ
せ、簡単、安価に外部へ故障を知らせるための警報信号
を出すことにより上記課題を解決するものである。SUMMARY OF THE INVENTION The present invention relates to an overheating, overcurrent protection relay or overheating provided in a motor when a blower driven by the motor is not driven for some reason such as overload, overcurrent, restraint operation or the like. In order to solve the above-mentioned problem, a relay provided in a blower main body is operated in conjunction with an overcurrent protection fuse, and an alarm signal for notifying a failure to the outside simply and inexpensively is issued.

【００１２】[0012]

【発明の実施の形態】図３、４、５は、本発明における
具体的実施例を説明するためのものである。FIGS. 3, 4 and 5 illustrate a specific embodiment of the present invention.

【００１３】この図３において、５は送風機本体、６は
２に連動した継電器でＣ接点リレー（そのコイルが励磁
されたときコモン点とａ接点間が閉じ、無励磁のときコ
モン点とｂ接点間が閉じる）を有している。７は２，６
に連動して外部へ警報信号を出すための継電器で６と同
様にＣ接点を有している。８は上記送風機の主電源スイ
ッチ、９は継電器７のコモン点とａ接点に接続され外部
へ故障警報信号を出力する警報接点、１０は手動である
いは外部信号に基づいて動作しこの動作により継電器
６、７を動作させて外部へ警報信号を出すように構成さ
れた保護機能の確認するための動作確認スイッチであ
る。In FIG. 3, 5 is a blower body, 6 is a relay linked to 2 and is a C contact relay (the common point and the a contact are closed when the coil is excited, and the common point and the b contact are closed when the coil is not excited. (Close between). 7 is 2,6
A relay for issuing an alarm signal to the outside in conjunction with. Reference numeral 8 denotes a main power switch of the blower, 9 denotes an alarm contact which is connected to a common point and a contact of the relay 7 and outputs a failure alarm signal to the outside, and 10 operates manually or based on an external signal. , 7 are operated to output a warning signal to the outside.

【００１４】図３では主電源スイッチ８がオフ状態であ
り、電動機の一次巻線M COIL には電圧が印加されてい
ない。これと並列接続された継電器６のコイルにも電圧
は印加されていないので、継電器６の接点はｂ側に閉
じ、ａ側が開いた状態になる。継電器７のコイルはその
一端が継電器６のｂ接点に接続されているが、主電源ス
イッチ８で電源オフ状態になっているため励磁されず、
継電器７の接点は従ってｂ側が閉じ、ａ側が開いた状態
になる。外部警報接点９は、この状態が電動機の正常状
態であることを示すものとして、外部に設けられた保護
回路や警報装置に出力する。In FIG. 3, the main power switch 8 is off, and no voltage is applied to the primary winding M COIL of the motor. Since no voltage is applied to the coil of the relay 6 connected in parallel with this, the contact of the relay 6 is closed on the b side and the a side is open. One end of the coil of the relay 7 is connected to the contact b of the relay 6, but is not excited because the power is turned off by the main power switch 8,
The contacts of the relay 7 are therefore closed on the b side and open on the a side. The external alarm contact 9 outputs to a protection circuit or an alarm device provided outside as an indication that this state is a normal state of the motor.

【００１５】図４は、図３の主電源スイッチ８を入れた
送風機の運転時における継電器６，７の動作を示す。こ
のとき、電源→主電源スイッチ８→動作確認スイッチ１
０→過熱、過電流保護リレーもしくは過熱、過電流保護
ヒューズ２→ M COIL →電源の経路で閉回路になるの
で、電動機の一次巻線 M COIL に電圧が印加される。こ
れと並列接続された継電器６はコイルが励磁され、その
接点はａ側が閉じ、ｂ側が開く。継電器７のコイルは継
電器６のｂ接点に接続されているので電源からの電圧は
継電器６で遮断されて印加されない。従って継電器７の
接点は図３のままで電動機の正常状態であることを示
す。従ってこの場合も、外部警報接点９は、この状態が
電動機の正常状態であることを示すものとして、外部に
設けられた保護回路や警報装置に出力する。FIG. 4 shows the operation of the relays 6 and 7 during operation of the blower with the main power switch 8 of FIG. 3 turned on. At this time, power supply → main power switch 8 → operation check switch 1
0 → overheating, overcurrent protection relay or overheating, overcurrent protection fuse 2 → M COIL → Because a closed circuit is established in the path of the power supply, a voltage is applied to the primary winding M COIL of the motor. The coil of the relay 6 connected in parallel with this is excited, and its contact is closed on the a side and opened on the b side. Since the coil of the relay 7 is connected to the contact b of the relay 6, the voltage from the power supply is cut off by the relay 6 and is not applied. Accordingly, the contacts of the relay 7 remain in FIG. 3 to indicate that the motor is in a normal state. Therefore, also in this case, the external alarm contact 9 outputs to a protection circuit or an alarm device provided outside as an indication that this state is a normal state of the electric motor.

【００１６】図５は送風機が過負荷、過電流、拘束運転
などなんらかの理由で駆動しない場合、電動機に設けら
れた過熱、過電流保護リレーもしくは過熱、過電流保護
ヒューズ２が動作し、この動作に連動して継電器６，７
が動作した状態を示す。FIG. 5 shows that when the blower is not driven for any reason, such as overload, overcurrent, restraint operation, etc., the overheat / overcurrent protection relay or overheat / overcurrent / overcurrent protection fuse 2 provided in the motor operates. In conjunction with relay 6,7
Indicates a state in which is operated.

【００１７】過熱、過電流保護リレーもしくは過熱、過
電流保護ヒューズ２が動作して開くと、電動機の一次巻
線 M COIL の電圧印加が無くなり、 M COILと並列接続
された継電器６のコイルへの電圧印加も無くなる。従っ
て継電器６の接点はｂ側が閉状態、ａ側が開状態とな
る。このため継電器６のｂ接点に接続された継電器７の
コイルは、電源→主電源スイッチ８→継電器６のコモン
点から接点ｂ→継電器７のコイル→主電源スイッチ８→
電源、の経路で電圧が印加され、継電器７の接点はａ側
が閉状態になる。外部警報接点９は、この状態を外部に
出力するので、外部で構成される保護回路や警報装置
は、電動機の異常状態であることを検知することが出来
る。When the overheat / overcurrent protection relay or the overheat / overcurrent protection fuse 2 operates and opens, the voltage application to the primary winding M COIL of the motor is stopped, and the coil of the relay 6 connected in parallel with M COIL is applied to the coil. Voltage application is also eliminated. Therefore, the contacts of the relay 6 are closed on the b side and open on the a side. For this reason, the coil of the relay 7 connected to the contact b of the relay 6 is: power supply → main power switch 8 → contact b from the common point of the relay 6 → coil of the relay 7 → main power switch 8 →
The voltage is applied through the path of the power supply, and the contact of the relay 7 is closed on the a side. Since the external alarm contact 9 outputs this state to the outside, an external protection circuit or alarm device can detect that the motor is in an abnormal state.

【００１８】この実施例には警報信号を確認するための
動作確認スイッチ１０が設けられている。外部へ警報信
号を出す機構の動作確認スイッチ１０は２の動作に代っ
て送風機の故障状態を実現するためのものであり、送風
機の運転中に手動などで遮断することにより継電器６，
７が図５と同様な動作をして、警報信号の確認ができる
ものである。なお動作確認スイッチ１０は実施例図では
電動機内に備わるようにしているが電動機外の送風機内
に備えても良い。勿論このような確認機能が不必要な場
合は動作確認スイッチ１０無しで済ますこともできる。
また動作確認スイッチ１０と過電流保護リレーもしくは
過熱、過電流保護ヒューズ２の接続順番は入れ換えても
差し支えない。In this embodiment, an operation check switch 10 for checking an alarm signal is provided. The operation check switch 10 of the mechanism for issuing an alarm signal to the outside is for realizing the failure state of the blower instead of the operation of 2, and the relay 6, 6 is turned off manually during the operation of the blower.
7 operates in the same manner as in FIG. 5 to confirm the alarm signal. The operation check switch 10 is provided in the electric motor in the embodiment, but may be provided in a blower outside the electric motor. Of course, if such a confirmation function is unnecessary, the operation confirmation switch 10 can be omitted.
The order of connecting the operation check switch 10 and the overcurrent protection relay or the overheat / overcurrent protection fuse 2 may be changed.

【００１９】上記図３，４，５において外部への警報接
点９はａ接点閉状態が異常状態である例を示したが、使
用状況によってはｂ接点が閉状態を異常とする場合も考
えられる。Although FIGS. 3, 4 and 5 show an example in which the closed contact a of the alarm contact 9 to the outside is abnormal, the closed contact of the contact b may be abnormal depending on the use condition. .

【００２０】また、警報接点９の外部接続として、ブザ
ー、ランプ、バックアップ機や、遠隔操作機への接続な
どが考えられる。As an external connection of the alarm contact 9, a buzzer, a lamp, a backup device, a connection to a remote control device, or the like can be considered.

【００２１】上記、ブザー、ランプ、バックアップ機の
電源は、送風機の電動機１の電源と共用することが考え
られ、特にブザー、ランプを送風機に具備することによ
り接続の手間を省くことができる。The power supply of the buzzer, the lamp, and the backup device may be shared with the power supply of the electric motor 1 of the blower. In particular, by providing the buzzer and the lamp in the blower, it is possible to save labor for connection.

【００２２】以上のような継電器を送風機に設けること
で、従来のように、送風機とその故障を検出する目的の
機器を別々に接続する必要もなくなる。また、送風機に
回転センサや制御回路を用いることもなくなり、外部へ
故障を知らせるための警報信号を簡単、安価に出すこと
ができる。By providing the above-described relay in the blower, it is not necessary to separately connect the blower and a device for detecting a failure of the blower as in the related art. In addition, the rotation sensor and the control circuit are not used for the blower, and an alarm signal for notifying a failure to the outside can be easily and inexpensively issued.

【００２３】また、電動機外部のサーマルリレーの動作
でなく、電動機の内部の過熱、過電流保護リレーもしく
は過熱、過電流保護ヒューズ２の動作を利用し、警報接
点を出力できるので、従来、電動機外部のサーマルリレ
ーの動作レベルを実際の電動機内部の過電流保護リレー
などの動作レベルより必ず低くなるように設定する必要
があったが、本実施例によればこのようなわずらわしさ
もなくなる。In addition, since the operation of the overheat / overcurrent protection relay or the overheat / overcurrent protection fuse 2 inside the motor is used instead of the operation of the thermal relay outside the motor, an alarm contact can be output. It is necessary to set the operation level of the thermal relay to be always lower than the actual operation level of the overcurrent protection relay inside the electric motor. However, according to the present embodiment, such troublesomeness is eliminated.

【００２４】[0024]

【発明の効果】本発明によれば、送風機の電動機に設け
られた過熱、過電流保護リレーもしくは過熱、過電流保
護ヒューズに連動して継電器を動作させる機構を送風機
に具備したことにより、簡単、安価に外部へ故障を知ら
せるための警報信号を出すことができる。According to the present invention, the blower is provided with a mechanism for operating the relay in conjunction with the overheat / overcurrent protection relay or the overheat / overcurrent protection fuse provided in the motor of the blower. An alarm signal for notifying the failure to the outside can be issued at low cost.

【図面の簡単な説明】[Brief description of the drawings]

【図１】従来の送風機の一般的な構造を示す図である。FIG. 1 is a diagram showing a general structure of a conventional blower.

【図２】従来からの送風機の故障を外部へ知らせる一例
を示した図である。FIG. 2 is a diagram showing an example of notifying a failure of a conventional blower to the outside.

【図３】本発明における具体的実施例（停止時）を示す
図である。FIG. 3 is a diagram showing a specific embodiment (when stopped) of the present invention.

【図４】本発明における具体的実施例（正常運転時）を
示す図である。FIG. 4 is a diagram showing a specific example (during normal operation) of the present invention.

【図５】本発明における具体的実施例（警報信号出力
時）を示す図である。FIG. 5 is a diagram showing a specific embodiment of the present invention (when an alarm signal is output).

【符号の説明】[Explanation of symbols]

１…送風機の電動機、 ２…電動機１に設けられた過
熱、過電流保護リレーもしくは過熱、過電流保護ヒュー
ズ、 ３…電磁開閉器やサーマルリレーなどの保護機
器、 ４…３に連動して故障を外部へ知らせる機器、
５…送風機本体、 ６…２に連動した継電器、 ７…
２，６に連動して外部へ警報信号をだすための継電器、
８…送風機の主電源スイッチ、 ９…警報接点、 １
０…外部へ警報信号を出す機構の動作確認スイッチ。1 ... electric motor of blower, 2 ... overheating, overcurrent protection relay or overheating, overcurrent protection fuse provided in electric motor 1, 3 ... protection equipment such as electromagnetic switch and thermal relay, 4 ... failure in conjunction with 3 Equipment to notify outside,
5 ... Blower body, 6 ... Relay relay linked to 2, 7 ...
A relay for outputting an alarm signal in conjunction with 2, 6;
8: Main power switch of blower 9: Alarm contact 1
0: Operation check switch of the mechanism that outputs an alarm signal to the outside.

Claims (4)

【特許請求の範囲】[Claims] 【請求項１】電動機を備え該電動機により駆動される送
風機において、一端が前記電動機内で該電動機の一次巻
線の一端と直列接続れ過熱や過電流から該電動機を保護
する電流遮断手段と、前記送風機内に設けられ前記一次
巻線に並列に励磁コイルが接続された第１のＣ接点リレ
ーと、前記送風機内に設けられ前記第１のＣ接点リレー
のｂ接点に励磁コイルの一端が接続された第２のＣ接点
リレーとを備え、前記第１のＣ接点リレーのコモン点を
前記電流遮断手段の他端側に接続し、前記第２のＣ接点
リレーの励磁コイルの他端を前記一次巻線の他端側に接
続し、前記第２のＣ接点リレーのコモン点とａ接点を警
報警報信号として外部に出力するように構成したことを
特徴とする警報警報付送風機。1. A blower comprising a motor and driven by the motor, one end of which is connected in series with one end of a primary winding of the motor in the motor to protect the motor from overheating or overcurrent; One end of the exciting coil is connected to a first C-contact relay provided in the blower and having an exciting coil connected in parallel with the primary winding, and a contact b of the first C-contact relay provided in the blower. A second C-contact relay, the common point of the first C-contact relay is connected to the other end of the current interrupting means, and the other end of the exciting coil of the second C-contact relay is connected to the A blower with an alarm and a warning connected to the other end of the primary winding and configured to output the common point and the a contact of the second C-contact relay to the outside as a warning and alarm signal. 【請求項２】請求項１の発明において、前記第１のＣ接
点リレーのコモン点が前記電流遮断手段の他端側で接続
される接続点と前記一次巻線の一端との間に前記電流遮
断手段と直列に接続された接点を備えたことを特徴とす
る故障警報付送風機。2. The invention according to claim 1, wherein said current is provided between a connection point at which a common point of said first C-contact relay is connected to the other end of said current interrupting means and one end of said primary winding. A blower with a failure alarm, comprising a contact connected in series with the shut-off means. 【請求項３】電動機により駆動される送風機において、
前記送風機が運転中に、過熱、過電流が発生したとき、
前記電動機に設けられた過熱、過電流保護リレーもしく
はヒューズの作動に連動して継電器を動作させ、外部へ
故障警報信号を出す機構を前記送風機内に具備したこと
を特徴とする故障警報付送風機。3. A blower driven by an electric motor,
During the operation of the blower, when overheating, overcurrent occurs,
A blower with a fault alarm, wherein a mechanism for operating a relay in response to the operation of an overheat or overcurrent protection relay or a fuse provided in the motor and outputting a fault alarm signal to the outside is provided in the blower. 【請求項４】請求項３の発明において、外部へ故障警報
信号を出す機構の動作確認機能を具備することを特徴と
する故障警報付送風機。4. The blower with a fault alarm according to claim 3, further comprising an operation check function of a mechanism for outputting a fault alarm signal to the outside.
JP08842698A 1998-04-01 1998-04-01 Blower Expired - Lifetime JP4324254B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP08842698A JP4324254B2 (en) 1998-04-01 1998-04-01 Blower

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP08842698A JP4324254B2 (en) 1998-04-01 1998-04-01 Blower

Publications (2)

Publication Number Publication Date
JPH11287196A true JPH11287196A (en) 1999-10-19
JP4324254B2 JP4324254B2 (en) 2009-09-02

Family

ID=13942467

Family Applications (1)

Application Number Title Priority Date Filing Date
JP08842698A Expired - Lifetime JP4324254B2 (en) 1998-04-01 1998-04-01 Blower

Country Status (1)

Country Link
JP (1) JP4324254B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005334530A (en) * 2004-05-31 2005-12-08 Hitachi Industrial Equipment Systems Co Ltd Fire extinguishing pump controller
JP2022504471A (en) * 2018-10-08 2022-01-13 イリノイ トゥール ワークス インコーポレイティド Ionized air blower methods and equipment

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005334530A (en) * 2004-05-31 2005-12-08 Hitachi Industrial Equipment Systems Co Ltd Fire extinguishing pump controller
JP4523335B2 (en) * 2004-05-31 2010-08-11 株式会社日立産機システム Fire pump control device
JP2022504471A (en) * 2018-10-08 2022-01-13 イリノイ トゥール ワークス インコーポレイティド Ionized air blower methods and equipment

Also Published As

Publication number Publication date
JP4324254B2 (en) 2009-09-02

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