Daikin Industries, Ltd.

Arthur D. Little, Inc.

Shigeki Hagiwara

Yoshitaka Shibamoto

Hiromichi Ueno

Ronald J Forni

John E McCullough

Hiroyuki Taniwa

Hiroyuki Kuroiwa

Robert M Lucas

Takekazu Obitani

Kenji Matsuba

Katsumi Sakitani

Richard J Whitehead

Shuichi Jomura

A first bypass valve ( ) that sets discharge capacity to 60% is provided in a first scroll of an asymmetrical spiral-type scroll compressor. Also, a second bypass valve ( ) that makes suction side and discharge side communicated with each other so that set load of the compressor becomes 50% is provided outside a scroll of the first scroll ( ). In this way, by closing the first and second bypass valves ( ), effective load of the compressor is set to 100%. Also, by opening the first bypass valve ( ) and concurrently closing the second bypass valve ( ), the effective load of the compressor is set to 60%. Further, by opening both the first and second bypass valves ( ), the effective load of the compressor is set to 30%.

Multi-stage capacity-controlled scroll compressor

Scroll type fluid machine

Horizontal type scroll compressor having inlet ports at an upper level

A scroll type fluid machinery which is provided with: a first scroll and a second scroll which moves with respect to the first scroll, where the base of the first scroll is provided with suction bores perforating through the base from the rear surface thereof to the front surface, and open at the outer peripheral portion of the front surface of the base, so that fluid released into an internal space of the body casing passes through the suction bores, and into the suction sides of compression volumes formed between spiral members of the scrolls, whereby suction pressure in the compression volumes is maximized and volumetric efficiency is improved.

Scroll apparatus with reduced inlet pressure drop

A thermal isolation arrangement for use in a co-rotating scroll refrigerant compressor includes various thermal insulation elements adapted to minimize heat transfer between hot rotating members of the scroll fluid device and the return refrigerant to be compressed, and between hot lubricant in the compressor and the return refrigerant. The thermal isolation elements of the present invention may be used individually or collectively to minimize the preheating of the inlet refrigerant so as to maintain the density of the return refrigerant being compressed to thereby increase the total efficiency of the scroll fluid device.

Thermal isolation arrangement for scroll fluid device

Growing community of inventors

Osaka, Japan

Shigeki Hagiwara