Title:
RECIPROCATING COMPRESSOR
Document Type and Number:
WIPO Patent Application WO/2022/180974
Kind Code:
A1
Abstract:
A reciprocating compressor comprising: a crankshaft having a rotation axis offset with respect to the central axis of a cylinder; a piston that defines a compression chamber together with the cylinder and reciprocates in the cylinder; and a connecting rod that has one side pivotably coupled to the crankshaft and the other side fixed to the piston and is caused to swing by the rotational motion of the crankshaft. The piston has: a top surface that constitutes a wall surface of the compression chamber; a sliding surface that slides on the inner peripheral surface of the cylinder within a range defined according to the range of the swing angle of the connecting rod; and a first non-sliding surface having such a shape as to join the top surface and the sliding surface to each other and avoid contact with the inner peripheral surface of the cylinder. At least a part of the first non-sliding surface is positioned closer to the inner peripheral surface of the cylinder than the first virtual extended curved plane obtained by virtually extending the sliding surface toward the top surface side.
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Inventors:
NAGATA SHUHEI (JP)
NARISAWA NOBUYUKI (JP)
NARISAWA NOBUYUKI (JP)
Application Number:
PCT/JP2021/044090
Publication Date:
September 01, 2022
Filing Date:
December 01, 2021
Export Citation:
Assignee:
HITACHI INDUSTRY EQUIPMENT SYSTEMS CO LTD (JP)
International Classes:
F04B39/00
Foreign References:
| JPH11325245A | 1999-11-26 | |||
| JP2014126001A | 2014-07-07 | |||
| JP2016537559A | 2016-12-01 | |||
| JP2007187116A | 2007-07-26 | |||
| JP2004316578A | 2004-11-11 | |||
| US20110005489A1 | 2011-01-13 | |||
| JP3206366U | 2016-09-15 |
Attorney, Agent or Firm:
KAICHI IP (JP)
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