JPH0214281U - - Google Patents

Description

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は本考案に成るクロスフローフアンの例
の要部断面図、第２図は該例に使用する駆動用電
動機の回転子を構成する、ヨーク組立体の断面図
ａと正面図ｂ、第３図は同じく回転子ヨーク単体
の背面図ａ、断面図ｂ及び正面図ｃ、第４図は同
、外周多極着磁の円板状磁石の断面図ａと正面図
ｂ、第５図は従来技術に成るクロスフローフアン
の例の要部断面図、第６図は同永久磁石の断面図
ａと正面図ｂである。 符号の説明、１……多翼羽根車、１―１……羽
根車軸、１―２……側板、１―３……翼片、２…
…ケーシング、３……回転子、３―１……回転子
ヨーク、４……固定子、４―１……固定子ヨーク
、４―１１……円筒部、５……ヨーク組立体、５
―１……回転子ヨーク、５―１１……ポール部、
５―１２……円板状底面、５―１３……翼片植設
溝、５―１４……軸嵌着孔、６……非磁性体スペ
ーサ、７……永久磁石、７′……円板状永久磁石
、８……羽根車側軸受、９……電動機側軸受。 FIG. 1 is a cross-sectional view of a main part of an example of a cross flow fan according to the present invention, and FIG. 2 is a cross-sectional view a and a front view b of a yoke assembly that constitutes the rotor of a drive motor used in the example. Figure 3 is a rear view a, cross-sectional view b, and front view c of the rotor yoke alone, and Figure 4 is a cross-sectional view a and front view b of a disc-shaped magnet with multi-pole magnetization on the outer periphery. 6 is a cross-sectional view of a main part of an example of a cross-flow fan according to the prior art, and FIG. 6 is a cross-sectional view a and a front view b of the same permanent magnet. Explanation of symbols, 1... Multi-blade impeller, 1-1... Impeller shaft, 1-2... Side plate, 1-3... Blade piece, 2...
...Casing, 3...Rotor, 3-1...Rotor yoke, 4...Stator, 4-1...Stator yoke, 4-11...Cylindrical portion, 5...Yoke assembly, 5
-1...Rotor yoke, 5-11...Pole part,
5-12... Disc-shaped bottom surface, 5-13... Wing piece installation groove, 5-14... Shaft fitting hole, 6... Non-magnetic spacer, 7... Permanent magnet, 7'... Circle Plate permanent magnet, 8...impeller side bearing, 9...motor side bearing.

Claims (1)

【実用新案登録請求の範囲】 (1) 電動機と該電動機の回転子軸に固着された
多翼羽根車と、少なくも該多翼羽根車を覆うごと
く配設されるケーシングとを備えたクロスフロー
フアンにおいて、 前記電動機は、ヨークに永久磁石を固着したヨ
ーク組立体を回転子とする外部回転子型直流ブラ
シレス電機で、該回転子ヨークは、円板状底面と
その外周縁と一体で前記永久磁石の磁極の数と同
数に分割して形成された擬似円筒状のポール部と
より成り、前記永久磁石はその外周面に多極着磁
され、該着磁された外周面が前記分割されたポー
ル部の内面に圧接し、且つ磁極の中心が前記ポー
ル部の中心と一致するごとく、然も前記円板状底
面に非磁性体より成るスペーサを介して固着され
て回転子側ヨーク組立体を形成し、又前記円板状
底面が多翼羽根車の一方端の側板を兼ねているこ
とを特徴とするクロスフローフアン。 (2) 多翼羽根車と一体の回転子を支承する軸受
は、一方が固定子内周面に、もう一方が前記多翼
羽根車の反対側で前記ケーシングに装着されてい
ること、を特徴とする実用新案登録請求の範囲第
１項記載のクロスフローフアン。[Claims for Utility Model Registration] (1) A cross-flow system comprising an electric motor, a multi-blade impeller fixed to the rotor shaft of the motor, and a casing disposed to at least cover the multi-blade impeller. In the fan, the electric motor is an external rotor type DC brushless electric machine whose rotor is a yoke assembly in which a permanent magnet is fixed to the yoke, and the rotor yoke is integral with a disk-shaped bottom surface and its outer periphery. It consists of a pseudo cylindrical pole part formed by dividing it into the same number as the number of magnetic poles of the magnet, the permanent magnet is magnetized with multiple poles on its outer peripheral surface, and the magnetized outer peripheral surface is divided into the divided pole parts. The rotor-side yoke assembly is pressed into contact with the inner surface of the pole part and is fixed to the disc-shaped bottom via a spacer made of a non-magnetic material so that the center of the magnetic pole coincides with the center of the pole part. A cross flow fan characterized in that the disc-shaped bottom surface also serves as a side plate at one end of a multi-blade impeller. (2) The bearing that supports the rotor integrated with the multi-blade impeller is characterized in that one side of the bearing is mounted on the inner circumferential surface of the stator and the other side is mounted on the casing on the opposite side of the multi-blade impeller. A cross flow fan according to claim 1 of the utility model registration claim.