Method for balancing an electrically driven air blower unit

US5738503A · kind A · utility

Assignee

• Robert Bosch GmbH · DE

Inventors

• Otfried Schmidt-Marloh · Bühl, DE
• Claudius Muschelknautz · Achern, DE
• Johann Bohnert · Sasbach, DE
• Guenter Bauer · Sulzbach-Rosenberg, DE
• Juergen Herp · Laufenburg (Baden), DE
• Kay Kroeger · Ottersweier, DE
• Josef Wehberg · Laufenburg (Baden), DE
• Gerd Knoepfel · Laufenburg (Baden), DE
• Jochen Goehre · Karlsruhe, DE
• Henning Schroeder · Berlin, DE
• Hans Kobschaetzky · Renchen, DE

Key dates

• Filing date: Jan 24, 1996
• Grant date: Apr 14, 1998
• Expiry date: Jan 24, 2016

Classification

• Technology area (CPC H): Electricity
• CPC primary: H02K15/165
• WIPO field: Electrical machinery, apparatus, energy
• WIPO sector: Electrical engineering

Abstract

A method of balancing an electronically driven air blower unit comprising a radial blower with a high-speed electronically commutated d.c. motor which drives the blower and which is of external rotor design, utilizing a balancing device into which the completely mounted air blower unit (1) can be inserted, without housing lid, and with which electrical contact (101, 102, 103; 201, 202, 203) can be made. The balancing device is provided with a control device for the motor (3, 4, 5) of the air blower unit and with a device (9) for bridging the motor electronics (10) of the air blower unit (1) itself. In order to drive the part to balanced of the air blower unit, its electromechanical transducer (3, 4, 5) is used, which for this purpose is actuated by the control device provided in the balancing device. The balancing process is essentially carried out in two compensation planes which are spaced axially from one another and are parallel with one another. This takes place on the one hand in a first compensation plane in the plane of the radial blower with possible erosion of material, and on the other hand in the second compensation plane, which lies opposite in the region of the end si…