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31. 发明专利

ITMI920098D0 未知
公开(公告)号：ITMI920098D0
公开(公告)日：1992-01-21
申请号：ITMI920098
申请日：1992-01-21
申请人： BOSCH GMBH ROBERT
发明人： SCHEIDEL WOLFGANG , AGNON REUBEN
IPC分类号： F04D29/32 , F04D29/66 , F04D19/00
摘要： A fan wheel has a cup shaped hub having an outer cup wall with a plurality of vanes and a cup bottom connectable with a shaft of a drive and provided at its inner side with a plurality of ribs defining a plurality of fields therebetween. The cup bottom in the region of the fields has a plurality of depressions extending from its inner side and having a width approximately 70% of a thickness of the cup bottom.

34. 发明专利

FR2542941B1 未知
公开(公告)号：FR2542941B1
公开(公告)日：1986-05-16
申请号：FR8316559
申请日：1983-10-18
申请人： BOSCH GMBH ROBERT
发明人： AGNON REUBEN , ZIERMANN HERMANN
IPC分类号： H02K9/28 , H02K5/20
摘要： An electric motor is proposed which is used especially for driving a fan wheel which is seated on a motor shaft. The electric motor is provided with a supply line which opens in the region of an essentially closed motor housing and carries cooling air into the motor housing, the motor housing having a through-opening for cooling air on its one housing wall which is arranged at right angles to the motor rotation axis. Furthermore, the electric motor has a commutating device which is arranged between the said housing wall and the fan wheel. The housing wall has at least one through-opening for the cooling air which is directed onto components belonging to the commutating device. The supply line for the cooling air opens into a chamber which has the through-opening and is arranged in front of the housing wall, seen in the flow direction of the cooling air. In consequence, the cooling air flow is directed onto the components belonging to the commutating device, so that an adequate motor life is achieved even under rugged operating conditions.

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