公开(公告)号：AU2002224094B2

公开(公告)日：2005-12-01

申请号：AU2002224094

申请日：2001-11-26

Applicant: MATSUSHITA REFRIGERATION COMPANY

Inventor： OTA TOSHIHIKO ,  KAKUTANI MASAHIRO ,  OSAKA MASAHIKO ,  KUBOTA AKIHIKO ,  AWASHIMA HIROKI ,  KOJIMA TAKESHI ,  NOGUCHI KAZUHITO ,  MOTEGI MANABU ,  NISHIHARA HIDETOSHI

IPC: F04B39/00 ,  F04B39/10 ,  F04B039/00

Abstract: This invention relates to a hermetic compressor used on a refrigerant cycle such as a refrigerator, and discloses a low noise compressor designed to attenuate a resonance sound in a compression chamber and intake pressure pulsing more operatively at a position adjacent to their sources, which intake pressure pulsing occurs at an intake valve port. In the compressor, a resonance space 38 is provided adjacent to the intake valve port 29 that is closer in distance to a noise source. As a result, noise can be reduced more operatively than muffling functions of an intake muffler 31 do. In addition, although acoustic characteristics of the intake muffler 31 amplify noises having specific frequencies, such noises can be attenuated before being amplified.

公开(公告)号：AU5425800A

公开(公告)日：2001-01-02

申请号：AU5425800

申请日：2000-06-14

Applicant: MATSUSHITA REFRIGERATION COMPANY

Inventor： NAKAZATO MAIKO ,  KUBOTA AKIHIKO ,  MOTEGI MANABU ,  OSAKA MASAHIKO

IPC: F04B39/00 ,  F04B39/02 ,  F04C29/02

Abstract: The present invention is contemplated to provide a hermetic motor-driven compressor which is capable of decreasing both the resonance sound due to an oil feed pipe and the resonance sound due to a crankshaft generated when the oil feed pipe is rotated while being dipped in the refrigerating machine oil. Within a hermetically sealed enclosure, a compression component and a motor drive component are supported through an elastic means, and the compression component comprises a crankshaft adapted to be rotatively driven by the motor drive component through an eccentric portion and provided with a journal, a balance weight disposed at the eccentric portion and a coaxial oil feed pipe disposed in the balance weight so as to revolve coaxially with the journal, so that the stirring of the refrigerating machine oil can be suppressed.