Mitsubishi Heavy Industries Limited

Mitsubishi Heavy Industries Thermal Systems, Ltd.

Chikako Sasakawa

Hajime Sato

Makoto Takeuchi

Takashi Watanabe

Hiroshi Yamazaki

Shunsuke Yakushiji

Shigeki Miura

Makoto Ogawa

Takahide Itoh

Hisao Mizuno

Yasuharu Maruiwa

Susumu Matsuda

Taichi Tateishi

Akihiro Noguchi

Yuichi Muroi

Toshiyuki Goto

Masanari Uno

Yukio Nagato

Ikuo Esaki

Hirofumi Shimaya

In a scroll compressor furnished with a fixed scroll and an orbiting scroll, and provided with steps on end plates of the fixed scroll and the orbiting scroll, formed such that the height thereof is high at a central side and low at an outer peripheral end side in a spiral direction of the walls, and with upper rims of the walls formed in a stepped shape corresponding to the steps, gaps are respectively provided between the end plates and upper rims of the walls, and a height of the gaps at room temperature is formed higher than a height under operating conditions. Moreover, the steps are provided at positions which exceeds a pitch angle of &pgr; (rad) along the spiral direction from the outer peripheral end. Furthermore, a concavity is formed in the end plate of the fixed scroll, and a discharge valve is provided in the concavity. Moreover, a plate which is freely movable in an orbit axis direction of the orbiting scroll is arranged, and a pressing device which presses the plate is provided. In addition, a shape of connecting wall faces which connect adjacent parts on one side face of the end plates, is determined by an envelope drawn by an orbit locus of a connecting rim which connects adjacent parts of the upper rims. Furthermore, there is provided a communication passage which communicates between two compression chambers which are developed by contact of the connecting rim and the connecting wall face.

Scroll compressor

Growing community of inventors

Tokai, Japan

Chikako Sasakawa