
基本信息:
- 专利标题: 用于提供气体混合物的方法和设备
- 申请号:CN201380026653.0 申请日:2013-05-23
- 公开(公告)号:CN104303127B 公开(公告)日:2017-04-19
- 发明人: N.A.道尼
- 申请人: 气体产品与化学公司
- 申请人地址: 美国宾夕法尼亚州
- 专利权人: 气体产品与化学公司
- 当前专利权人: 气体产品与化学公司
- 当前专利权人地址: 美国宾夕法尼亚州
- 代理机构: 中国专利代理(香港)有限公司
- 代理人: 李强; 谭祐祥
- 优先权: 12169384.0 20120524 EP
- 国际申请: PCT/EP2013/060686 2013.05.23
- 国际公布: WO2013/174954 EN 2013.11.28
- 进入国家日期: 2014-11-21
- 主分类号: G05D11/13
- IPC分类号: G05D11/13 ; B01F3/02
There is provided a gas mixer arrangement comprising a first gas source for supplying a first gas; a second gas source for supplying a second gas different from said first gas; a first valve for regulating the flow of the first gas; a second valve for regulating the flow of the second gas; a mixer located downstream of the first and second valves and arranged, in use, to mix the first and second gases to provide a mixed gas; a meter arranged to measure the average molecular weight of the mixed gas, comprising a high-frequency planar piezoelectric crystal oscillator in contact with the mixed gas and a sensor operable to determine atmospheric pressure; and a controller operable, in response to the measured average molecular weight of said mixed gas, to control at least one of said first and second valves in order to control the relative proportion of the first and second gases in said mixed gas.
公开/授权文献:
- CN104303127A 用于提供气体混合物的方法和设备 公开/授权日:2015-01-21
IPC结构图谱:
G | 物理 |
--G05 | 控制;调节 |
----G05D | 非电变量的控制或调节系统 |
------G05D11/00 | 比率控制 |
--------G05D11/02 | .两个或两个以上流动的流体或液态材料的比率控制 |
----------G05D11/13 | ..以使用电装置为特征的 |