OILLESS COMPRESSOR - HITACHI INDUSTRY EQUIPMENT SYSTEMS CO LTD

Title:

OILLESS COMPRESSOR

Document Type and Number:

WIPO Patent Application WO/2016/136482

Kind Code:

A1

Abstract:

Size reduction of a compressor and cooling of an electric motor are effectively achieved. An oilless compressor, having: a compressor main body that has a rotor for compressing air, a rotor shaft for supporting the rotor, and a bearing for rotatably supporting the rotor shaft; an electric motor for producing drive force for driving the compressor main body; at least one gear for transmitting drive force to the rotor shaft; a lubricating oil pipe for conveying lubricating oil to the bearing and/or the gear; and an oil pump for pressure-feeding the lubricating oil; wherein the electric motor has, in the external peripheral direction of an armature, a cooling jacket for channeling the lubricating oil to an internal flow channel to cool the armature of the electric motor, and the lubricating oil circulates through the cooling jacket and the lubricating oil pipe.

Inventors:

KASAHARA MASAYUKI (JP)
TANAKA HIDEHARU (JP)

Application Number:

PCT/JP2016/054047

Publication Date:

September 01, 2016

Filing Date:

February 12, 2016

Export Citation:

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Assignee:

HITACHI INDUSTRY EQUIPMENT SYSTEMS CO LTD (JP)

International Classes:

F04C29/04; F04C18/16; F04C29/00

Foreign References:

JP2007113588A	2007-05-10
JP2009174491A	2009-08-06
US4693736A	1987-09-15

Other References: