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Patent Searching and Data


Title:
CONSTANT FLOW RATE CONTROL DEVICE
Document Type and Number:
WIPO Patent Application WO/2010/013412
Kind Code:
A1
Abstract:
A constant flow control device is relatively inexpensive, simple, and compact in size, can be easily processed and assembled, has a reduced possibility of clogging even if the device controls a minute flow rate, does not require maintenance, can highly accurately perform predetermined flow rate control by suppressing a variation in a controlled flow rate due to temperature, and can simultaneously achieve high productivity, high reliability, and highly accurate constant flow rate control. A constant flow rate control device is constructed such that a single opening member (230) of a restricting element (200) has formed therein restricting holes (231-235) and such that fluid is caused to pass through, in sequence, the restricting holes through flow paths formed by pressure chamber forming flow paths (221A, 222A, 223A, 241A, 242A, 243A).  The construction causes pressure loss of the entire restricting element (200), through which the fluid passes, to be relatively large, and as a result, when the fluid is controlled to the flow rate same as that controlled by conventional constant flow rate control valves, the effective area of the restriction holes is greater than that of the conventional constant flow rate valves.

Inventors:
KOJIMA, Hiroki (1-6-8, Fukami-higashi, Yamato-sh, Kanagawa 12, 〒2420012, JP)
小島博樹 (〒12 神奈川県大和市深見東1丁目6番8号 富士精工株式会社内 Kanagawa, 〒2420012, JP)
NAKAMURA, Takanobu (1-6-8, Fukami-higashi, Yamato-sh, Kanagawa 12, 〒2420012, JP)
中村貴信 (〒12 神奈川県大和市深見東1丁目6番8号 富士精工株式会社内 Kanagawa, 〒2420012, JP)
Application Number:
JP2009/003450
Publication Date:
February 04, 2010
Filing Date:
July 22, 2009
Export Citation:
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Assignee:
FUJI BELLOWS CO., LTD. (1-6-8, Fukami-higashi Yamato-sh, Kanagawa 12, 〒2420012, JP)
富士精工株式会社 (〒12 神奈川県大和市深見東1丁目6番8号 Kanagawa, 〒2420012, JP)
KOJIMA, Hiroki (1-6-8, Fukami-higashi, Yamato-sh, Kanagawa 12, 〒2420012, JP)
小島博樹 (〒12 神奈川県大和市深見東1丁目6番8号 富士精工株式会社内 Kanagawa, 〒2420012, JP)
NAKAMURA, Takanobu (1-6-8, Fukami-higashi, Yamato-sh, Kanagawa 12, 〒2420012, JP)
International Classes:
F16K17/30; F16K47/04
Foreign References:
US4241757A
JPS50103722A
JP2001330195A
JPS639797A
JPH0763277A
JPH0599354A
JP2007069377A
Other References:
See also references of EP 2317189A1
Attorney, Agent or Firm:
HAYASHI, Nobuyuki et al. (7th Floor, Wenping Toranomon Building 1-1-23 Toranomon, Minato-k, Tokyo 01, 〒1050001, JP)
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