JPH04302933A - Ventilator - Google Patents
VentilatorInfo
- Publication number
- JPH04302933A JPH04302933A JP6715191A JP6715191A JPH04302933A JP H04302933 A JPH04302933 A JP H04302933A JP 6715191 A JP6715191 A JP 6715191A JP 6715191 A JP6715191 A JP 6715191A JP H04302933 A JPH04302933 A JP H04302933A
- Authority
- JP
- Japan
- Prior art keywords
- motor
- ventilation fan
- ventilator
- rotating
- supplied
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000009423 ventilation Methods 0.000 claims description 32
- 238000001514 detection method Methods 0.000 claims description 13
- 238000010411 cooking Methods 0.000 abstract 1
- 239000003990 capacitor Substances 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
Landscapes
- Ventilation (AREA)
Abstract
Description
【０００１】0001
【産業上の利用分野】本発明は各種電子機器、各種電気
機器等の空冷装置に適用して好適な換気扇装置に関する
。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ventilation fan device suitable for use in air cooling devices for various electronic devices, various electric devices, and the like.
【０００２】0002
【従来の技術】各種電子機器、各種電気機器においては
、内部の空冷のために換気扇装置が設けられているが、
これら機器が長時間、例えば、昼夜に亘って使用されて
いる場合、換気扇装置が故障、寿命等により動作しなく
成ると、これら機器が内部温度の上昇によって、正常に
動作しなく成ったり、動作不能に成ったりする。[Prior Art] Various electronic devices and various electric devices are equipped with ventilation fan devices for internal air cooling.
If these devices are used for long periods of time, for example, day and night, and if the ventilation fan system malfunctions or stops working due to end of life, these devices may stop working properly or stop working due to the rise in internal temperature. It becomes impossible.
【０００３】ところが、かかる換気扇装置はこれらの機
器のケース内の裏面側に設けられているので、換気扇装
置が動作しなく成ったことに気が付かない場合が多い。
そこで、従来は、例えば、実開昭６３−７００８１号公
報に開示されているように、換気扇及びその近傍の固定
部間にセンサを設けて、その換気扇の回転停止を検出す
るようにしたものもあるが、センサを換気扇及びその近
傍の固定部間にわざわざ取り付けるので装置の価格の上
昇に繋がるばかりでなく、センサの信頼性にも問題があ
る。However, since such ventilation fan devices are installed on the back side inside the case of these devices, it is often not noticed that the ventilation fan device has stopped operating. Therefore, in the past, as disclosed in Utility Model Application Publication No. 63-70081, a sensor was installed between the ventilation fan and a fixed part in its vicinity to detect the stoppage of rotation of the ventilation fan. However, since the sensor is purposely installed between the ventilation fan and the fixed parts in its vicinity, this not only leads to an increase in the price of the device, but also poses a problem in the reliability of the sensor.
【０００４】0004
【発明が解決しようとする課題】かかる点に鑑み、本発
明は、構成簡単、廉価にして、換気扇が回転していない
ことを確実に知ることのできる換気扇装置を提案しよう
とするものである。SUMMARY OF THE INVENTION In view of the above-mentioned problems, the present invention aims to propose a ventilation fan device which is simple in structure and inexpensive, and which can reliably know that the ventilation fan is not rotating.
【０００５】[0005]
【課題を解決するための手段】本発明は、換気扇１と、
その換気扇１を回転駆動する直流モータ２とを有する換
気扇装置において、直流モータ２に流れるパルス電流の
検出信号が供給される直流モータ２の回転の有無を検出
する検出回路３、４、５と、その検出回路３、４、５の
検出出力が供給されて、換気扇１が回転していないこと
を報知する報知手段８とを有するものである。[Means for Solving the Problems] The present invention provides a ventilation fan 1,
In a ventilation fan device having a DC motor 2 that rotationally drives the ventilation fan 1, detection circuits 3, 4, and 5 detect whether or not the DC motor 2 is rotating, to which a detection signal of a pulse current flowing through the DC motor 2 is supplied; It has a notification means 8 to which the detection outputs of the detection circuits 3, 4, and 5 are supplied to notify that the ventilation fan 1 is not rotating.
【０００６】[0006]
【作用】かかる本発明によれば、直流モータ２が回転し
なく成ると、それが検出回路３、４、５によって検出さ
れ、報知手段８によって、換気扇１が回転しなく成った
ことが報知される。[Operation] According to the present invention, when the DC motor 2 stops rotating, this is detected by the detection circuits 3, 4, and 5, and the notification means 8 notifies that the ventilation fan 1 has stopped rotating. Ru.
【０００７】[0007]
【実施例】以下に、図１（Ａ）を参照して、本発明の実
施例を詳細に説明しよう。１は換気扇、２はその換気扇
１を回転駆動する直流モータである。これら換気扇１及
びモータ２は一体化されて、各種電子機器、各種電気機
器のケース内の背面部又はその近傍に取り付けられてい
る。電源＋Ｂ（１２Ｖ）及び接地間に、モータ２及びモ
ータ２に流れる電流を検出するための抵抗器（数Ω程度
の抵抗値の低い抵抗器で、接地側に接続されている）３
の直列回路を接続し、図１（Ｂ）に示す抵抗器３の両端
の電圧、即ち、モータ２に流れるパルス電流の検出電圧
（振幅が例えば２００ｍＶのパルス電圧）ｂが増幅器４
に供給されて、後述するリトリガブル単安定マルチバイ
ブレータ５が動作し得る振幅、即ち、例えば、４Ｖに増
幅される。尚、直流モータ２に流れる電流がパルス状で
あるのは、整流子の存在によるものである。[Embodiment] Hereinafter, an embodiment of the present invention will be described in detail with reference to FIG. 1(A). 1 is a ventilation fan, and 2 is a DC motor that rotationally drives the ventilation fan 1. These ventilation fan 1 and motor 2 are integrated and attached to the back of or near the case of various electronic devices and various electric devices. A resistor for detecting the motor 2 and the current flowing through the motor 2 between the power supply +B (12V) and the ground (a resistor with a low resistance of about several ohms, connected to the ground side) 3
The voltage across the resistor 3 shown in FIG.
The voltage is amplified to an amplitude at which a retriggerable monostable multivibrator 5 (described later) can operate, that is, for example, 4V. Note that the reason why the current flowing through the DC motor 2 is pulse-like is due to the presence of a commutator.
【０００８】５はリトリガブル単安定マルチバイブレー
タ（ＩＣ）で、６、７はその時定数回路を構成するそれ
ぞれ外付けのコンデンサ及び抵抗器で、電源＋Ｂ２（５
Ｖ）がこれらコンデンサ６及び抵抗器７の各一端に接続
されている。この単安定マルチバイブレータ５は、これ
に供給されるパルス電圧ｃのモータ２が正常に回転して
いるときの周期より多少長い単安定時間を有する。そし
て、図１（Ｃ）に示す増幅器４からのパルス電圧ｃが単
安定マルチバイブレータ５に供給される。5 is a retriggerable monostable multivibrator (IC), 6 and 7 are external capacitors and resistors that constitute the time constant circuit, and the power supply +B2 (5
V) is connected to one end of each of the capacitor 6 and resistor 7. This monostable multivibrator 5 has a monostable time that is somewhat longer than the cycle of the pulse voltage c supplied to it when the motor 2 is normally rotating. Then, the pulse voltage c from the amplifier 4 shown in FIG. 1(C) is supplied to the monostable multivibrator 5.
【０００９】発光ダイオード（ＬＥＤ）８のアノードが
電源＋Ｂ２に接続され、そのカソードが抵抗器９を通じ
て、単安定マルチバイブレータ５の反転出力端子に接続
される。このＬＥＤ８は、各種電子機器、各種電気機器
ケースの前面、即ち、操作面、パネル面に設ける。尚、
ＬＥＤ８の代わりに、白熱ランプ、液晶表示装置等の発
光表示装置、ベル、ブザー等の音響装置を使用すること
もできる。The anode of a light emitting diode (LED) 8 is connected to the power supply +B2, and its cathode is connected to the inverting output terminal of the monostable multivibrator 5 through a resistor 9. This LED 8 is provided on the front surface of various electronic devices and various electrical device cases, that is, on the operation surface and panel surface. still,
Instead of the LED 8, an incandescent lamp, a light emitting display device such as a liquid crystal display device, or an acoustic device such as a bell or a buzzer can also be used.
【００１０】次に、この実施例の動作を説明しよう。モ
ータ２が正常に回転しているときは、パルス電圧ｃが単
安定マルチバイブレータ５に供給されるので、その反転
出力端子の電圧ｄは、図１（Ｄ）に示す如く、低電圧に
成るので、ＬＥＤ８は点灯する。又、モータ２が回転を
停止したり、又は、その回転数が低下したときは、単安
定マルチバイブレータ５のその反転出力端子の電圧ｄは
、図１（Ｄ）に示す如く、高電圧に成るので、ＬＥＤ８
は消灯して、モータ２が回転していないこと、即ち、換
気扇１が回転していないことが報知される。かくして、
換気扇装置が動作していないことが報知されれば、その
換気扇の取り付けられた機器の動作を停止させ、他の機
器と交換することに成る。Next, the operation of this embodiment will be explained. When the motor 2 is rotating normally, the pulse voltage c is supplied to the monostable multivibrator 5, so the voltage d at its inverted output terminal becomes a low voltage as shown in Fig. 1(D). , LED8 lights up. Further, when the motor 2 stops rotating or its rotation speed decreases, the voltage d at the inverted output terminal of the monostable multivibrator 5 becomes a high voltage as shown in FIG. 1(D). Therefore, LED8
is turned off to notify that the motor 2 is not rotating, that is, the ventilation fan 1 is not rotating. Thus,
If it is reported that the ventilation fan device is not operating, the equipment to which the ventilation fan is attached will be stopped and replaced with another equipment.
【００１１】尚、リトリガブル単安定マルチバイブレー
タ５の代わりに、積分回路及びそのその積分出力のレベ
ルを基準レベルと比較する比較器から成る回路等を採用
することもできる。[0011] Instead of the retriggerable monostable multivibrator 5, it is also possible to employ a circuit consisting of an integrating circuit and a comparator for comparing the level of its integrated output with a reference level.
【００１２】0012
【発明の効果】上述せる本発明によれば、換気扇と、そ
の換気扇を回転駆動する直流モータとを有する換気扇装
置において、直流モータに流れるパルス電流の検出信号
が供給される直流モータの回転の有無を検出する検出回
路と、その検出回路の検出出力が供給されて、換気扇が
回転していないことを報知する報知手段とを有するので
、構成簡単、廉価にして、換気扇が回転していないこと
を確実に知ることができる。According to the present invention described above, in a ventilation fan device having a ventilation fan and a DC motor that rotationally drives the ventilation fan, it is possible to detect whether or not the DC motor is rotating, to which a detection signal of a pulse current flowing through the DC motor is supplied. Since it has a detection circuit that detects the current and a notification means that is supplied with the detection output of the detection circuit and notifies that the ventilation fan is not rotating, the structure is simple and inexpensive, and the system can detect that the ventilation fan is not rotating. You can know for sure.
【図１】（Ａ） 実施例を示す回路図（Ｂ）〜（Ｄ）
タイミングチャート[Figure 1] (A) Circuit diagrams showing examples (B) to (D)
Timing chart
１ 換気扇
２ 直流モータ
３ モータ２に流れる電流を検出するための抵抗器４
増幅器
５ リトリガブル単安定マルチバイブレータ８ 発
光ダイオード（ＬＥＤ）1 Ventilation fan 2 DC motor 3 Resistor 4 for detecting the current flowing through the motor 2
Amplifier 5 Retriggerable monostable multivibrator 8 Light emitting diode (LED)
Claims (1)
流モータとを有する換気扇装置において、上記直流モー
タに流れるパルス電流の検出信号が供給される上記直流
モータの回転の有無を検出する検出回路と、該検出回路
の検出出力が供給されて、上記換気扇が回転していない
ことを報知する報知手段とを有することを特徴とする換
気扇装置。1. A ventilation fan device comprising a ventilation fan and a DC motor that rotationally drives the ventilation fan, comprising: a detection circuit that detects whether or not the DC motor is rotating, to which a detection signal of a pulse current flowing through the DC motor is supplied; . A ventilation fan device comprising: notification means to which the detection output of the detection circuit is supplied to notify that the ventilation fan is not rotating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6715191A JPH04302933A (en) | 1991-03-29 | 1991-03-29 | Ventilator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6715191A JPH04302933A (en) | 1991-03-29 | 1991-03-29 | Ventilator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04302933A true JPH04302933A (en) | 1992-10-26 |
Family
ID=13336621
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6715191A Pending JPH04302933A (en) | 1991-03-29 | 1991-03-29 | Ventilator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04302933A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3411631B1 (en) | 2016-02-03 | 2020-01-22 | Intell Properties B.V. | Cooker hood and power supply arrangement thereof |
-
1991
- 1991-03-29 JP JP6715191A patent/JPH04302933A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3411631B1 (en) | 2016-02-03 | 2020-01-22 | Intell Properties B.V. | Cooker hood and power supply arrangement thereof |
| EP3411631B2 (en) † | 2016-02-03 | 2023-07-12 | Intell Properties B.V. | Cooker hood and power supply arrangement thereof |
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