Patent Number: 6,167,719

Title: Compressor for refrigeration cycle

Abstract: In a compressor of a refrigeration cycle using an HC-based refrigerant and a lubricant having specific gravity greater than that of the HC-based refrigerant and having no or no or less mutual solubility with the HC-based refrigerant, an oil reservoir is formed on a bottom of the compressor, the oil reservoir is provided at its portion with a recess, a suction port of a lubricant suction pipe for supplying the lubricant to a compressor mechanism is provided in the recess. With this feature, it is possible to sufficiently supply the lubricant to the compressor even when the lubricant has no or less mutual solubility, so that even if the amount of the lubricant is reduced, the lubricant can be sufficiently sucked from an inlet port of a lubricant pumping pipe and supplied to the compressor mechanism.

Inventors: Yakumaru; Yuichi (Shiga, JP), Watanabe; Yukio (Kyoto, JP), Fujitaka; Akira (Shiga, JP), Numoto; Hironao (Shiga, JP), Sato; Shigehiro (Shiga, JP), Haneda; Kanji (Shiga, JP), Kobayashi; Yoshinori (Shiga, JP)

Assignee: Matsushita Electric Industrial Co., Ltd.

International Classification: F04C 29/02 (20060101); F04C 23/00 (20060101); F25B 31/02 (20060101); F25B 31/00 (20060101); F04C 18/02 (20060101); F25B 043/00 ()

Expiration Date: 01/02/2018