JPS6214196U

JPS6214196U -

Info

Publication number: JPS6214196U
Application number: JP10414485U
Authority: JP
Priority date: 1985-07-10
Filing date: 1985-07-10
Publication date: 1987-01-28

Description

[Brief explanation of the drawing]

第１図は本考案の一実施例の回路構成図、第２
図は本考案の判別動作説明図でａは正方向回転時
の、ｂは逆方向回転時のＰ信号、Ｑ信号のタイム
チヤート、第３図ａは従来のモータフアンの正面
図、ｂはそのＸ―Ｘ断面図、第４図は従来技術の
問題点説明用の斜視図である。＜符号の説明＞、１……ベンチユリ・ケース、
２……モータ支持足、３……モータケース、４…
…固定子、６……回転体、７……回転子、８……
回転ハブ、９……軸、１０……フアンブレード、
１３……スリーブ、１４ａ，１４ｂ……軸受、１
５……回転検出装置、１６……マグネツト、１７
，１８……磁極位置検出器、２０……機器箱体、
２１，２２，２３……モータフアン、３１，３２
……カウンタ、３３……クロツク信号発生器。 Figure 1 is a circuit configuration diagram of an embodiment of the present invention;
The figure is an explanatory diagram of the discrimination operation of the present invention, where a is a time chart of the P signal and Q signal when rotating in the forward direction, b is a time chart of the P signal and Q signal when rotating in the reverse direction, Figure 3 a is a front view of a conventional motor fan, and b is its The XX sectional view and FIG. 4 are perspective views for explaining the problems of the prior art. <Explanation of symbols>, 1... Bench lily case,
2...Motor support leg, 3...Motor case, 4...
...Stator, 6 ...Rotating body, 7...Rotor, 8...
Rotating hub, 9...axis, 10...fan blade,
13... Sleeve, 14a, 14b... Bearing, 1
5... Rotation detection device, 16... Magnet, 17
, 18... Magnetic pole position detector, 20... Equipment box,
21, 22, 23... Motor fan, 31, 32
...Counter, 33...Clock signal generator.

Claims

[Scope of utility model registration request]

The motor is supported through a plurality of support legs on the inner diameter of a wind tunnel formed by a bench lily case, and a plurality of fan blades integral with the motor rotor are disposed within the wind tunnel and the motor is mounted from one side of the wind tunnel. In an air-cooling motor fan configured to discharge sucked air from the other side, a magnet is fixed to the outer periphery of any one of the fan blades, and the magnetic flux of the rotatably moving magnet is detected to generate a voltage signal P.
A first magnetic pole position detector that outputs a voltage signal Q and a second magnetic pole position detector that outputs a voltage signal Q are placed at positions facing the above-mentioned magnet with an air gap in between, and at a small interval in the circumferential direction. A phase detecting means is arranged at a position apart from the motor and detects a phase difference between the time when the P signal is generated and the time when the Q signal is generated, and based on the magnitude of this phase difference, it is determined whether the motor rotation is normal or reverse. This air cooling motor fan is characterized by the following features: