Title:
多気筒ロータリ式圧縮機と冷凍サイクル装置
Document Type and Number:
Japanese Patent JP5422658
Kind Code:
B2
Abstract:
Disclosed is a multi-cylinder rotary compressor (R) in which cylinders (6A, 6B) are provided with an intervening partition plate (2) interposed therebetween, blade rear chambers (10a, 10b) communicate through a blade groove with cylinder chambers (Sa, Sb) which introduce low-pressure gas, and a spring member (14) is provided in a first blade rear chamber in such a way that compressive action is regularly performed in a cylinder chamber by applying rear pressure to a blade (11a). A second blade rear chamber has a hermetically sealed construction and a compressive action is performed in a cylinder chamber by introducing high-pressure gas thereto. A pressure changeover mechanism (K) which introduces low-pressure gas and performs closed-cylinder operation is provided above an oil reservoir section (15). The expression L < C / 4Fmax (1) is established in respect of a conduit of length L [m] from the pressure changeover mechanism to the blade rear chamber, in which the maximum rotation speed of the compressor is Fmax [Hz] and the speed of sound in the high-pressure gas discharged therefrom is C [m/s]. A multi-cylinder rotary compressor is provided in which generation of abnormal increases in vibratory force on the conduits produced by resonance and abnormal increases in pressure fluctuation in the blade rear chamber are prevented, and in which improved reliability and high compression performance are obtained. Further provided is a refrigeration cycle device which is provided with said compressor and which achieves improved refrigeration cycle efficiency.
Inventors:
Takuya Hirayama
Application Number:
JP2011531977A
Publication Date:
February 19, 2014
Filing Date:
September 17, 2010
Export Citation:
Assignee:
Toshiba Carrier Co., Ltd.
International Classes:
F04C18/356; F04C23/00; F04C29/06; F25B1/04
Domestic Patent References:
| JP2006022766A | 2006-01-26 | |||
| JP2005009483A | 2005-01-13 |
Attorney, Agent or Firm:
Suzue International Patent Office
Kurata Masatoshi
Takakura Shigeo
Satoshi Kono
Makoto Nakamura
Yoshihiro Fukuhara
Takashi Mine
Toshio Shirane
Sadao Muramatsu
Nobuhisa Nogawa
Kocho Chojiro
Naoki Kono
Katsu Sunagawa
Morisezo Iseki
Tatsushi Sato
Takashi Okada
Mihoko Horiuchi
Takenori Masanori
Kurata Masatoshi
Takakura Shigeo
Satoshi Kono
Makoto Nakamura
Yoshihiro Fukuhara
Takashi Mine
Toshio Shirane
Sadao Muramatsu
Nobuhisa Nogawa
Kocho Chojiro
Naoki Kono
Katsu Sunagawa
Morisezo Iseki
Tatsushi Sato
Takashi Okada
Mihoko Horiuchi
Takenori Masanori