Air compressor with improved cooling performance

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 9982665
SERIAL NO

14461412

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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In an air compressor, inner blades of a cooling fan are formed into a centrifugal type, and outer blades are formed into an axial flow type. Exterior air is sucked through a ventilating window by the outer blades, and an air stream (CA1) is generated. A part of the generated air stream flows towards a stator coil, like an air stream (CA2). By a negative pressure generated by the inner blades, the air in the vicinity of the stator coil is sucked to the inner blades, like an air stream (CA3). The sucked air flows out from a motor-side opening towards a non-motor-side opening by a negative pressure generated by the outer blades, is sucked to the outer blades like an air stream (CA4) and flows out together with the air stream (CA1).

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Patent Owner(s)

  • HITACHI KOKI CO LTD.

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Ichihashi, Naoto Ibaraki, JP 24 71

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