JPH0190297U

JPH0190297U -

Info

Publication number: JPH0190297U
Application number: JP1987186698U
Authority: JP
Priority date: 1987-12-07
Filing date: 1987-12-07
Publication date: 1989-06-14

Description

[Brief explanation of the drawing]

第１図〜第９図はこの考案の一実施例における
説明図であつて、第１図はこの考案の一実施例に
おけるフアン駆動用電動機の制御回路図、第２図
は上記電動機の連結されたクロスフローフアンに
おけるフアンロータの右側板側の構造を示す断面
図、第３図は上記フアンロータの右側板側の分解
斜視図、第４図は上記フアンロータの左側板側の
取付構造を示す断面図、第５図は上記右側板側の
取付けの説明図、第６図は上記電動機における回
転子及び固定子の断面模式図、第７図は固定子の
励磁を説明するためのコイルへの通電制御のタイ
ムチヤート、第８図は回転子の回転位置と固定子
の各極における励磁状態との関係の説明図、第９
図ａ，ｂ，ｃ，ｄはそれぞれ第１図の制御回路に
おいて処理されていく信号波形の模式図、第１０
図及び第１１図はそれぞれ従来装置の断面図であ
る。４……回転子、５……固定子、２０……永久磁
石、２９……コイル、３０……制御回路、３３…
…回転速度検出用信号線、３４……ＯＮ作動信号
線（通電制御用配線）、Ｈ１，Ｈ２，Ｈ３……ホ
ール素子（回転位置検出手段）。 1 to 9 are explanatory diagrams of one embodiment of this invention, in which FIG. 1 is a control circuit diagram of a fan drive motor in one embodiment of this invention, and FIG. 2 is a diagram showing the connection of the motor. FIG. 3 is an exploded perspective view of the right side of the fan rotor, and FIG. 4 is a sectional view of the mounting structure of the left side of the fan rotor. FIG. 5 is an explanatory diagram of the installation on the right side plate, FIG. 6 is a schematic cross-sectional view of the rotor and stator in the motor, and FIG. Time chart, Figure 8 is an explanatory diagram of the relationship between the rotational position of the rotor and the excitation state at each pole of the stator, Figure 9
Figures a, b, c, and d are schematic diagrams of signal waveforms processed in the control circuit of Figure 1, respectively.
1 and 11 are sectional views of conventional devices, respectively. 4... Rotor, 5... Stator, 20... Permanent magnet, 29... Coil, 30... Control circuit, 33...
...Rotational speed detection signal line, 34...ON operation signal line (current supply control wiring), H1, H2, H3...Hall element (rotational position detection means).

Claims

[Scope of utility model registration request]

A rotor 4 to which a permanent magnet 20 is attached, a stator 5 disposed facing the permanent magnet 20, and rotational position detection means H1, H2, which outputs a signal corresponding to the rotational position of the rotor 4. H3 and periodically control the energization of the coil 29 wound around the stator 5 in accordance with the output signals from the rotational position detection means H1, H2, H3. The electric motor has a control circuit 30 that performs
An electric motor characterized in that a signal line 33 for detecting rotational speed is provided, which is connected to a wiring 34 for controlling energization to the coil 29.