Title:
FLOW RATE CONTROL VALVE
Document Type and Number:
WIPO Patent Application WO/2006/112236
Kind Code:
A1
Abstract:
A flow rate control valve where flow path resistance is reduced to facilitate a flow of fluid, that cab stabilize the flow of the fluid, where valve opening can be varied at high-speed to an accurate degree of valve opening, where response of valve opening and closing can be improved, and whose life can be extended. In the flow rate control valve, a flow path entry port (16), a valve body (21), a linear conversion mechanism, and a flow path exit port (17) are arranged on a straight line. The linear conversion mechanism has a ball screw nut (27) for transmitting rotational drive of a servomotor (31), a ball screw (23) for converting the rotational drive into linear drive, and a ball screw main shaft (26) where splines for transmitting the linear drive are formed. The valve body (21) parallelly moves in the direction of the center axis of the flow path entry port (16) and the flow path exit port (17) and is integral with the ball screw main shaft (26).
Inventors:
ITOH KAZUTOSHI (JP)
YANAGAWA MASASHI (JP)
YANAGAWA MASASHI (JP)
Application Number:
PCT/JP2006/306141
Publication Date:
October 26, 2006
Filing Date:
March 27, 2006
Export Citation:
Assignee:
CKD CORP (JP)
ITOH KAZUTOSHI (JP)
YANAGAWA MASASHI (JP)
ITOH KAZUTOSHI (JP)
YANAGAWA MASASHI (JP)
International Classes:
F16K31/04; F16K1/04; F16K51/02
Foreign References:
| JPH11325264A | 1999-11-26 | |||
| JP2002139165A | 2002-05-17 | |||
| JPH07301345A | 1995-11-14 | |||
| JPS59501377A | 1984-08-02 | |||
| JPS59212579A | 1984-12-01 | |||
| JPH0512864U | 1993-02-19 | |||
| JPH02292583A | 1990-12-04 | |||
| JP2006046415A | 2006-02-16 | |||
| US2527851A | 1950-10-31 | |||
| US2266485A | 1941-12-16 | |||
| JP2004116673A | 2004-04-15 |
Attorney, Agent or Firm:
Cosmos, Patent Office (2-22 Nishiki 2-chome, Naka-k, Nagoya-shi Aichi03, JP)
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