Fujitsu General Limited

Hiroki Tomoda

Makoto Araki

Takefumi Inagaki

Motonobu Furukawa

Mitsuru Shiraishi

Masaki Fujino

Shuji Takeda

Akira Shimada

Masashi Katayama

Jyunya Tanaka

Naoya Morozumi

Yasuhiro Sakakibara

Toshihiko Fukuda

It provides at a low price a compressor capable of preventing a waste oil pipe from falling off and curbing leakage of lubricating oil and oscillation of the pipe. An L-shaped waste oil pipefor returning lubricating oilto a bottom of a motor chamberis connected to a waste oil passageof a main frameso as to put at least a part of the waste oil pipein elastic contact with an internal surface of an airtight container

Lubricating oil circulating device for compressor

In an air conditioner having a refrigerant circuit in which a compressor, a four-way switching valve, an outdoor-side heat exchanger, an expansion valve, and an indoor-side heat exchanger are connected in succession via pipes, the interior of an enclosed vessel of a compressor, which contains a refrigerant compressing section and an electric motor, is divided airtightly into a refrigerant discharge chamber and an electric motor chamber, two refrigerant flow path pipes are provided on the electric motor chamber side, and these refrigerant flow path pipes are appropriately switched to the refrigerant discharge side and the refrigerant suction side of the compressor via the four-way switching valve, whereby one compressor can be used as an internal high pressure type or an internal low pressure type.

Air conditioner

Growing community of inventors

Kawasaki, Japan

Hiroki Tomoda