Electrical generator or motor structure – Dynamoelectric – Rotary
Patent
1988-03-07
1989-05-02
Skudy, R.
Electrical generator or motor structure
Dynamoelectric
Rotary
310 62, 310 89, 277 56, 384135, H02K 510
Patent
active
048271667
ABSTRACT:
A water-resistant fan motor has a water spray deflector which includes a closed central portion fan blade and a closed, convex, coaxial deflector between the fan blade and the motor housing. This convex deflector establishes a first small gap between the periphery of the rotatable convex deflector and a portion of the housing substantially at the outer diameter thereof. A second small gap between a portion of the rotor and a portion of the housing is unaligned with the first small gap and an enlarged cavity is in series between the first and second small gaps. This construction establishes a labyrinth for any water spray, and hence inhibits any water spray entering the interior of the motor housing. The foregoing abstract is merely a resume of one general application, is not a complete discussion of all principles of operation or applications and is not to be construed as a limitation on the scope of the claimed subject matter.
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patent: 3885176 (1975-05-01), Cunningham
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patent: 4287662 (1981-09-01), Otto
patent: 4358303 (1982-11-01), Rakow
patent: 4535262 (1985-08-01), Newburg
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