JPS5858894A - Rotating speed controller for fan motor - Google Patents
Rotating speed controller for fan motorInfo
- Publication number
- JPS5858894A JPS5858894A JP56157539A JP15753981A JPS5858894A JP S5858894 A JPS5858894 A JP S5858894A JP 56157539 A JP56157539 A JP 56157539A JP 15753981 A JP15753981 A JP 15753981A JP S5858894 A JPS5858894 A JP S5858894A
- Authority
- JP
- Japan
- Prior art keywords
- fan motor
- output
- pulse
- circuit
- inputted
- 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
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P25/00—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details
- H02P25/02—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details characterised by the kind of motor
- H02P25/10—Commutator motors, e.g. repulsion motors
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Control Of Ac Motors In General (AREA)
Abstract
Description
【発明の詳細な説明】
本発明は電子機器等に強制空冷用として使用されている
ファンモータの回転数制御回路に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a rotation speed control circuit for a fan motor used for forced air cooling in electronic equipment and the like.
従来、この種のファンモータに使用されているイノダク
７ヨノモータの回転数制御回路として広く採用されてい
るのはサイリスタあるいはトライアック（双方向性サイ
リスク）等（以下総称してサイリスクという）を使用し
た位相制御方式であるが、サイリスタの点弧時の電圧。Conventionally, a phase control circuit using a thyristor or triac (bidirectional thyrisk), etc. (hereinafter collectively referred to as thyrisk) has been widely used as the rotation speed control circuit for the Inodak 7 Yonomotor used in this type of fan motor. The control method is the voltage when the thyristor is turned on.
電流の立ち」ユリ速度が早いため、モータの鉄芯。The iron core of the motor because of the high speed of the current.
コイルなどから騒音を発生したりあるいは電気ノイズ全
発生するという欠点があった。特に電子計碧機等のよう
に低レベル高速度の電気信号を扱っている装置に使用し
ているファンモータでは、電気ノイズの発生を極度に嫌
うためサイリスタを使用した位相制御による回転数制呻
方或は採用することができなかった。It has the drawback that noise is generated from the coils, etc., or that all electrical noise is generated. In particular, fan motors used in devices that handle low-level, high-speed electrical signals, such as electronic meters, are extremely sensitive to electrical noise, so the rotational speed is controlled by phase control using thyristors. However, it was not possible to hire one.
本発明の目的は、ファンモータへの供給電力を制御する
サイリスクを、交流波形がＯＶを交差する点で点弧させ
ることによって電気的ノイズの発生を防ぐと共に、上記
サイリスタの点弧を制御することりこよりファンモータ
への供給電力を特定の時間間隔で１サイクルあるいは数
ザイクル間引いて電力制御を行うことＶこよって。An object of the present invention is to prevent the generation of electrical noise by firing the thyristor that controls the power supplied to the fan motor at the point where the AC waveform intersects OV, and to control the firing of the thyristor. Therefore, power control is performed by thinning out the power supplied to the fan motor by one cycle or several cycles at specific time intervals.
上記欠点を解決し、騒音あるいは電気的ノイスの発生を
防止できるファンモータの回転数制御回路を提供するこ
とにある。It is an object of the present invention to provide a fan motor rotation speed control circuit which can solve the above-mentioned drawbacks and prevent the generation of noise or electrical noise.
次に本発明の実施例について図面を参照し−こ説明する
。Next, embodiments of the present invention will be described with reference to the drawings.
第１図に本発明の一実施例によるファンモータの回転数
制御回路を示し、第２図に第１図の各部の電圧波形のタ
イミング図を示す。FIG. 1 shows a fan motor rotation speed control circuit according to an embodiment of the present invention, and FIG. 2 shows a timing chart of voltage waveforms at various parts in FIG. 1.
第１図において、交流電源入力端子ＩＮの両端から絶縁
トランス１全通して得られた交流波形（第２図の１１）
は、入力電圧がＯＶＶこなった時に幅の狭いパルスを発
生するゼロクロスパノ［ス発生回路２に入り、第２図の
２１の如きパルス列に変換され、２人力の論理積ゲート
６及び方形波発振回路４の同期入力端子４１に入る。こ
こで、４は自走型の方形波発振回路であって、第２図の
４２の如き出力特性を有する。即ち。In Fig. 1, an AC waveform (11 in Fig. 2) obtained from both ends of the AC power supply input terminal IN through the insulation transformer 1 is shown.
enters the zero-cross span generation circuit 2, which generates a narrow pulse when the input voltage exceeds OVV, and is converted into a pulse train as shown in 21 in Figure 2. It enters the synchronization input terminal 41 of the circuit 4. Here, 4 is a free-running square wave oscillation circuit, and has output characteristics as shown in 42 in FIG. That is.
ロウレベル時間Ｔ１に一定で、・・イレベル時間Ｔ２は
外部制御入力端子４３に加えられる電圧に依存し、かつ
出力の立ち下りのタイミングは方形波発振回路４の出力
４２は前記２人力論理積ゲート６のもう一方の入力に入
力される。The low level time T1 is constant, the low level time T2 depends on the voltage applied to the external control input terminal 43, and the timing of the fall of the output is determined by the output 42 of the square wave oscillation circuit 4. is input to the other input of
その結果、２人力論理積ゲート６の出力３１ハ。As a result, the output of the two-manual AND gate 6 is 31c.
第２図の３１の如く、特定の間隔で間引きされたパルス
列となり、トライアックトリガ増幅器５で増幅され、ト
ライアックトリガトランス６を経て、トライアツク７全
点弧する。As shown at 31 in FIG. 2, the pulse train is thinned out at specific intervals, is amplified by the triac trigger amplifier 5, passes through the triac trigger transformer 6, and all the triacs 7 are fired.
従って、ファンモータ８Ｖこ印加される電圧は。Therefore, the voltage applied to the fan motor is 8V.
第２図８の如き１間引きされた交流となる。本実施例で
は、方形波発振回路４の出力を、第２図４２においてロ
ウレベル時間Ｔ１がゼロクロスパルス１個分を包含する
時間に設定しであるため、第２図８１１′ｉ：おいてフ
ァンモータ８に印加される電圧のうち間引かれる時間Ｔ
６は交流 周期分に固定されている。この時間Ｔ３の区
間ではファンモータ８は慣性で回転しているわけである
から１時間Ｔ６をあまり長くしすぎると慣性運動中に回
転数が低下しすぎ、ファンモータ８が脈動的動作をする
ために、好ましくないと言える。The result is an alternating current that is decimated by one as shown in FIG. 28. In this embodiment, the output of the square wave oscillation circuit 4 is set to a time period in which the low level time T1 includes one zero-cross pulse in FIG. The time T during which the voltage applied to 8 is thinned out
6 is fixed to the AC cycle. During this period of time T3, the fan motor 8 is rotating due to inertia, so if the 1 hour T6 is made too long, the rotation speed will drop too much during inertial movement, causing the fan motor 8 to operate in a pulsating manner. It can be said that it is not desirable.
以上説明した動作により２発振回路４の外部制御入力端
子４６ヲ操作することにより、ファンモータ８に電圧が
印加される時間Ｔ４が可変となり、ファンモータ８の入
力電力は７４／（Ｔ５１Ｔ４）に比例して変化するため
、結果としてファノ七−タ８の回転数が制御される。By operating the external control input terminal 46 of the dual oscillation circuit 4 according to the operation described above, the time T4 during which voltage is applied to the fan motor 8 can be varied, and the input power of the fan motor 8 is proportional to 74/(T51T4). As a result, the rotation speed of the fan rotor 8 is controlled.
以上説明したように本発明によれば、騒１′？あるいは
電気的ノイズの発生を防止できるファンモータの回転数
制御回路が得られる。As explained above, according to the present invention, the noise 1'? Alternatively, a fan motor rotation speed control circuit that can prevent the generation of electrical noise can be obtained.
第１図は本発明の一実施例によるファンモータの回転数
制御回路の回路図、第２図は第１図における各部の電圧
波形のタイミング図でちる。
１・・・絶縁トランス。
２・・・ゼロクロスパルス発生回路。
６・・・２人力論理積ゲート。
５・・・トライアックトリガ増幅器。
ＩＮ・・・交流電源入力端子。
７・・・トライアック、８・・・ファンモータ。
６・・・トライアノ、クトリガトランス。
４・・・方形波発振回路。
４６・・・方形波発振回路４の外部制御入力端子。
−４１；・・方形波発振回路４の同期入力端子。
Ｔ１・・・方形波発振回路４のロウレベル時間。
Ｔ２・・・方形波発振回路４のノ・イレベル時間、
”Ｔ６・・・ファンモータ８に電源電圧の印加されない
時間。
Ｔ４・・・ファンモータ８に電源電圧の印加きれる時間
。FIG. 1 is a circuit diagram of a fan motor rotation speed control circuit according to an embodiment of the present invention, and FIG. 2 is a timing chart of voltage waveforms at various parts in FIG. 1...Isolation transformer. 2...Zero cross pulse generation circuit. 6...2-person logical product gate. 5...Triac trigger amplifier. IN: AC power input terminal. 7...Triac, 8...Fan motor. 6...Triano, Cutrigatrans. 4... Square wave oscillation circuit. 46...External control input terminal of the square wave oscillation circuit 4. -41;...Synchronization input terminal of square wave oscillation circuit 4. T1: Low level time of square wave oscillation circuit 4. T2...no-no level time of square wave oscillation circuit 4,
"T6: Time during which no power supply voltage is applied to the fan motor 8. T4: Time during which power supply voltage is no longer applied to the fan motor 8.
Claims (1)
を発生するゼロクロスパルス発生回路と。 発振パルスの間隔を外部制御可能な方形彼発（ｋ回路と
、前記ゼロクロスパルス発生回路の出力信号と＠記方形
波発振回路の発振出力信号との論理積信号を出力する回
路と、該論理積信号を基に、ファンモータと前記交流電
源との間ＶＣ挿入接続されたサイリスタを点弧する点弧
回路とを有し、前記方形波発振回路の発振パルスの間隔
を変化させることによって、前記ファンセータの回転数
を変化させることを特徴とするファンモータの回転数制
御回路。[Claims] 1. A zero-crossing pulse generation circuit that generates a pulse at the point where the AC power supply voltage crosses zero volts. a square wave oscillator (k circuit) whose oscillation pulse intervals can be externally controlled; and an ignition circuit that ignites a thyristor connected by a VC between the fan motor and the AC power source based on the signal, and by changing the interval of oscillation pulses of the square wave oscillation circuit. A fan motor rotation speed control circuit characterized by changing the rotation speed of a sweater.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56157539A JPS5858894A (en) | 1981-10-05 | 1981-10-05 | Rotating speed controller for fan motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56157539A JPS5858894A (en) | 1981-10-05 | 1981-10-05 | Rotating speed controller for fan motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5858894A true JPS5858894A (en) | 1983-04-07 |
Family
ID=15651884
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP56157539A Pending JPS5858894A (en) | 1981-10-05 | 1981-10-05 | Rotating speed controller for fan motor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5858894A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61164492A (en) * | 1985-01-16 | 1986-07-25 | Matsushita Electric Ind Co Ltd | Controller for motor |
| US5470816A (en) * | 1993-07-08 | 1995-11-28 | Nippon Paper Industries Co., Ltd. | Thermal recording sheet |
| NL9400887A (en) * | 1994-05-31 | 1996-01-02 | Daalderop Bv | Device for controlling a heating apparatus |
| US5494882A (en) * | 1993-04-27 | 1996-02-27 | Nippon Paper Industries Co., Ltd. | Thermal recording material |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5049619A (en) * | 1973-09-06 | 1975-05-02 |
-
1981
- 1981-10-05 JP JP56157539A patent/JPS5858894A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5049619A (en) * | 1973-09-06 | 1975-05-02 |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61164492A (en) * | 1985-01-16 | 1986-07-25 | Matsushita Electric Ind Co Ltd | Controller for motor |
| US5494882A (en) * | 1993-04-27 | 1996-02-27 | Nippon Paper Industries Co., Ltd. | Thermal recording material |
| US5470816A (en) * | 1993-07-08 | 1995-11-28 | Nippon Paper Industries Co., Ltd. | Thermal recording sheet |
| US5612279A (en) * | 1993-07-08 | 1997-03-18 | Nippon Paper Industries, Ltd. | Optical recording sheet |
| NL9400887A (en) * | 1994-05-31 | 1996-01-02 | Daalderop Bv | Device for controlling a heating apparatus |
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