Electric drive unit

Details Electric drive unit Electric drive unit

2008-03-18

2008-03-18

Le, Dang (Department: 2834)

Electrical generator or motor structure

Dynamoelectric

Rotary

C310S064000, C417S423140

Reexamination Certificate

active

07345386

ABSTRACT:
An electric drive unit includes an electric motor for driving a fan. The motor has an electronic control module. An impeller wheel for producing a working air flow is mounted by bearings on an axle of the electric motor. The hub of the impeller wheel has at least one preferably two walls enclosing a cooling space or cooling space portions. At least one cooling surface of a cooling body is in contact with components of the electronic control module and projects into the cooling space. A gap formed between the hub of the impeller wheel and a carrier section communicates with an inner hub space. Holes (43, 322) communicating with the hub inner space are provided in at least one component of the electric drive unit. When the impeller wheel rotes a convection cooling air flow is established between the gap and the holes.

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patent: 4122529 (1993-01-01), None
patent: 4418000 (1995-11-01), None
patent: 1063752 (2000-12-01), None
patent: 1079502 (2001-02-01), None

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