To provide a multi-cylinder type rotary compressor improvable in compressing performance ensuring the smooth motion of blades in the multi-cylinder type rotary compressor provided with a compression mechanism part for always performing compressing operation, and a compression mechanism part capable of performing cylinder cut off operation.
A motor part 3 and the first and second compression mechanism parts 2A, 2B are stored in a sealed casing 1. The respective compression mechanism parts are provided with cylinders 8A, 8B provided with cylinder chambers 14a, 14b storing eccentric rollers 13a, 13b; blades 15a, 15b with the tip edges abutting on the peripheral surfaces of the rollers to bisect the cylinder chambers; discharge passages 50A, 50B for guiding compressed gas to be discharged into the sealed casing; and discharge valve devices 70A, 70B. The second compression mechanism part separates the blades from the peripheral surface of the roller to allow cylinder cut off operation when load is small, and the first compression mechanism part always performs compressing operation. The respective compression mechanism parts are differentiated in at least one of the size of clearance between the respective components, the discharge passages and the discharge valve devices.
| JP2007262906 | TWO-STAGE TYPE VACUUM PUMP |
| JP2012072679 | COMPRESSOR |
| WO/2013/165485 | DUAL PUMP AND MOTOR WITH CONTROL DEVICE |
TAKASHIMA KAZU
TOMINAGA TAKESHI
ONODA IZUMI
KITAICHI SHOICHIRO
| JP2001153076A | 2001-06-05 | |||
| JPH0681786A | 1994-03-22 | |||
| JP2002005057A | 2002-01-09 | |||
| JPH01247786A | 1989-10-03 | |||
| JPH10103223A | 1998-04-21 | |||
| JPH10103273A | 1998-04-21 |
Satoshi Kono
Makoto Nakamura
Kurata Masatoshi
Sadao Muramatsu
Ryo Hashimoto
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