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1. (WO2018037917) SCROLL COMPRESSOR

Pub. No.:    WO/2018/037917    International Application No.:    PCT/JP2017/028855
Publication Date: Fri Mar 02 00:59:59 CET 2018 International Filing Date: Thu Aug 10 01:59:59 CEST 2017
IPC: F04C 18/02
Applicants: SANDEN HOLDINGS CORPORATION
サンデンホールディングス株式会社
Inventors: TESHIMA Atsuo
手島 淳夫
KOWADA Yoshio
小和田 芳夫
HONDA Hiroshi
本田 宏
MAEMURA Yoshinobu
前村 好信
KABURAGI Misako
冠城 美早子
Title: SCROLL COMPRESSOR
Abstract:
[Problem] To suppress pressure in a back pressure chamber to a pressure level that prevents excessive increase of a frictional force generated between a movable scroll and a fixed scroll even in a compression operation state where the pressure in the back pressure chamber becomes relatively high. [Solution] Provided is a scroll compressor 100 that includes: a housing 10 that has an intake chamber H1 and a discharge chamber H2 for fluid; a scroll unit 1 that, by means of revolving movement of a movable scroll 3 which meshes with a fixed scroll 2, compresses the fluid having flowed into a hermetically sealed space between both scrolls 2, 3 through the intake chamber H1 and discharges the fluid through the discharge chamber H2; a back pressure chamber H3 that is formed between the housing 10 and an end surface of the movable scroll 3 on the side opposite to the fixed scroll 2 side; a pressure supply passage L3 that connects the discharge chamber H2 and the back pressure chamber H3; and a pressure release passage L4 that connects the back pressure chamber H3 and the intake chamber H1, wherein the throttling area of an orifice 50 that is provided in the pressure release passage L4 and that narrows a flow passage area of the pressure release passage L4 autonomously changes in accordance with pressure in the back pressure chamber H3.