Title:
ガス供給装置
Document Type and Number:
Japanese Patent JP6591177
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To prevent gas leakage from an air valve 10 and to suppress disturbance of a gas flow.MEANS FOR SOLVING THE PROBLEM: A gas supply device is composed of an air valve 10 and a Venturi mixer 20. The Venturi mixer has a nozzle 21 and a throat 22 for mixing a material gas G and air a from the air valve. An auxiliary valve 40 is disposed on an air intake port 13 opened to the atmospheric air of the air valve, and the auxiliary valve is opened and closed in accordance with opening/closing of the air valve. By opening and closing the auxiliary valve in conjunction with the air valve, the air intake port is closed by the auxiliary valve even when the air valve is closed in a state that a positive pressure is applied, thus a gas taken into the air valve can be suppressed from being released from the air intake port to the atmospheric air. Connection of a pipe 24 prevents turbulence of a gas as screw connection. An air intake cylinder 50 extended upward is disposed at an atmospheric air-side port of the auxiliary valve, so that the gas, which is heavier than the air, is accumulated in the air intake cylinder and prevented from being released to the atmospheric air.SELECTED DRAWING: Figure 1
Inventors:
Kazuya Kato
Nakamura Kanta
Shoichi Iida
Tsukii Houki
Seiichi Hirano
Toru Kuwasawa
Nakamura Kanta
Shoichi Iida
Tsukii Houki
Seiichi Hirano
Toru Kuwasawa
Application Number:
JP2015041405A
Publication Date:
October 16, 2019
Filing Date:
March 03, 2015
Export Citation:
Assignee:
Takeyo Gas Co., Ltd.
Keiyo Gas Co., Ltd.
Hadano Gas Co., Ltd.
Matsumoto Gas Co., Ltd.
i .t .o Co., Ltd.
Ishii Iron Works Co., Ltd.
Keiyo Gas Co., Ltd.
Hadano Gas Co., Ltd.
Matsumoto Gas Co., Ltd.
i .t .o Co., Ltd.
Ishii Iron Works Co., Ltd.
International Classes:
F23K5/00; B01F23/10; C10L3/00
Domestic Patent References:
| JP7100364A | ||||
| JP4604113B2 | ||||
| JP2005177665A |
Foreign References:
| WO2012101755A1 |
Attorney, Agent or Firm:
Naoya Kamata
Bunji Kamada
Yaichiro Nakatani
Takayoshi Tagawa
Bunji Kamada
Yaichiro Nakatani
Takayoshi Tagawa