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Patent Searching and Data


Title:
SCREW COMPRESSOR
Document Type and Number:
WIPO Patent Application WO/2018/185914
Kind Code:
A1
Abstract:
A screw compressor that minimizes re-scattering of refrigerator oil from an oil accumulation part due to a swirl flow, and that achieves high oil separation efficiency. This screw compressor comprises: an oil-separating part configured from an outer tube part into which gas and oil discharged by a compressor body part flows, and a tubular inner tube part provided coaxially with the outer tube part in the interior of the outer tube part; an oil-accumulating part provided under the oil-separating part; and a partition plate that is provided to the inner peripheral wall of the outer tube part, and that partitions the oil-separating part and the oil-accumulating part. The outer tube part has, in a position where the partition plate is provided, a first oil-returning hole that passes through the side surface of the outer tube part on the side adjacent to the compressor body part and that communicates with the oil-accumulating part. The partition plate has, in a position axially symmetric with the first oil-returning hole and halfway around the outer peripheral side of the partition plate, a second oil-returning hole that passes through the partition plate and that allows the oil-accumulating part and the oil-separating part to communicate. The partition plate is formed integrally with the outer tube part.

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Inventors:
KANDA MASAHIRO (JP)
SHIMOJI MIHOKO (JP)
NAGATA HIDEAKI (JP)
KAMIKAWA MASAAKI (JP)
Application Number:
JP2017/014385
Publication Date:
October 11, 2018
Filing Date:
April 06, 2017
Export Citation:
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Assignee:
MITSUBISHI ELECTRIC CORP (JP)
International Classes:
F04C29/02; F04B39/04; F04C18/16
Foreign References:
JP2014211101A2014-11-13
JP2009074756A2009-04-09
JP2010001837A2010-01-07
JP2015042846A2015-03-05
Other References:
See also references of EP 3608543A4
Attorney, Agent or Firm:
KISA PATENT & TRADEMARK FIRM (JP)
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