Title:
DISPLACEMENT TYPE MACHINERY
Document Type and Number:
WIPO Patent Application WO/2001/071188
Kind Code:
A1
Abstract:
Displacement type machinery, wherein a second reciprocating mass (26) performing a reciprocating motion in the direction at right angle to the reciprocating motion direction of a first reciprocating mass (A) is added to the first reciprocating mass (A) forming a compression mechanism and a resultant force of these reciprocating motion inertia forces is converted into a load which is constant in size and has a direction rotated together with a driving shaft (2) so as to keep a balance with a centrifugal force of an eccentric mass (2b) fixed to the driving shaft (2), and also a third reciprocating mass (27) reciprocating in the same direction as the second reciprocating mass (26) is added to another position in axial direction so as to also keep a balance with a moment, whereby, because the compression mechanism itself is of a multiple cylinder type and, in addition, reduces a variation in driving torque as a mechanism suitable for two-stage compression, an unbalance caused by an inertia force can be reduced so as to reduce vibration.
Inventors:
HAYASE ISAO (JP)
TAKAO KUNIHIKO (JP)
TSUCHIYA TAKESHI (JP)
TAKAO KUNIHIKO (JP)
TSUCHIYA TAKESHI (JP)
Application Number:
PCT/JP2000/001649
Publication Date:
September 27, 2001
Filing Date:
March 17, 2000
Export Citation:
Assignee:
HITACHI LTD (JP)
HAYASE ISAO (JP)
TAKAO KUNIHIKO (JP)
TSUCHIYA TAKESHI (JP)
HAYASE ISAO (JP)
TAKAO KUNIHIKO (JP)
TSUCHIYA TAKESHI (JP)
International Classes:
F04B25/00; F04B39/00; (IPC1-7): F04B35/00
Foreign References:
| JPS433258B1 | ||||
| JPS4311852B1 |
Attorney, Agent or Firm:
Sakuta, Yasuo (Ltd. 5-1, Marunouchi 1-chome Chiyoda-ku Tokyo, JP)
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