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Title:
COMPRESSOR
Document Type and Number:
WIPO Patent Application WO/2019/176476
Kind Code:
A1
Abstract:
Provided is a compressor in which the amount of oil flowing out into an intake chamber can be reduced. A compressor 1 is provided with a drive shaft (6), a pressure supply passage (7), and a discharge passage (8). The discharge passage (8) includes an in-shaft passage (81) that is formed inside the drive shaft (6) and that has one end connected to a crank chamber (30), a center bore inner space (82) that is connected to the other end of the in-shaft passage (81) and that is formed, in a center bore (22), between the other-end-side end surface of the drive shaft (6) and a valve plate (4), and a gas return passage (84) that includes an orifice (83) and that connects the center bore inner space (82) to an intake chamber (53). In a passage forming member (10) forming a part of the discharge passage (8), the gas return passage (84) is formed inside a protrusion (12) that protrudes, in the center bore inner space (82), toward the drive shaft (6) from the valve plate (4). The inner diameter of the in-shaft passage (81) is larger than the inner diameter of the gas return passage (84). A gap is formed between the drive shaft (6) and the protrusion (12).

Inventors:
TAGUCHI, Yukihiko (20 Kotobuki-cho Isesaki-sh, Gunma 02, 〒3728502, JP)
Application Number:
JP2019/006178
Publication Date:
September 19, 2019
Filing Date:
February 12, 2019
Export Citation:
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Assignee:
SANDEN AUTOMOTIVE COMPONENTS CORPORATION (20 Kotobuki-cho, Isesaki-shi Gunma, 02, 〒3728502, JP)
International Classes:
F04B27/12; F04B39/02; F04B39/04
Foreign References:
JP2008106679A2008-05-08
JP2007198250A2007-08-09
JP2010285898A2010-12-24
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