Title:
FLUID ROTARY MACHINE
Document Type and Number:
WIPO Patent Application WO/2012/017820
Kind Code:
A1
Abstract:
Provided is a fluid rotary machine of which footprint can be decreased by achieving a reduced parts count and a simplified valve structure as well as by reducing externally coupled pipes used for suction and discharge of a fluid. The fluid rotary machine has four heads and is adapted such that double-headed pistons (7, 8) are disposed inside a cylinder (21) in a crisscross arrangement; the rotational balance between rotational parts including the double-headed pistons (7, 8) is achieved only by first and second balance weights (9, 10) that are inserted and incorporated into the both ends of a crankshaft (5) coupled eccentrically to a shaft (4); and the shaft (4) is rotated for the double-headed pistons (7, 8) to linearly reciprocate in the cylinder (21). The fluid rotary machine has rotary valves (23, 24) for switching between the suction and discharge operations of a fluid for each cylinder chamber (25), the rotary valves (23, 24) being incorporated into a case (3) to be coaxial and integrally rotatable with the shaft (4).
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| JPH11182448 | HYDRAULIC PUMP |
| WO/2012/022952 | RING CAM AND FLUID-WORKING MACHINE INCLUDING RING CAM |
Inventors:
ISHIDA NAOYA (JP)
SHIMAZU ISAO (JP)
KOMATSU FUMITO (JP)
SHIMAZU ISAO (JP)
KOMATSU FUMITO (JP)
Application Number:
PCT/JP2011/066384
Publication Date:
February 09, 2012
Filing Date:
July 19, 2011
Export Citation:
Assignee:
NIPPO SANGYO (JP)
YUGEN KAISHA K R & D (JP)
ISHIDA NAOYA (JP)
SHIMAZU ISAO (JP)
KOMATSU FUMITO (JP)
YUGEN KAISHA K R & D (JP)
ISHIDA NAOYA (JP)
SHIMAZU ISAO (JP)
KOMATSU FUMITO (JP)
International Classes:
F04B9/04; F03C1/053; F04B1/053; F04B27/053; F04B53/10
Foreign References:
| JPS56141079A | 1981-11-04 | |||
| JPH1182287A | 1999-03-26 | |||
| JP4553977B1 | 2010-09-29 |
Attorney, Agent or Firm:
WATANUKI, TAKAO (JP)
Takao Watanuki (JP)
Takao Watanuki (JP)
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Claims: