
基本信息:
- 专利标题: Thermal type flow sensor
- 申请号:EP09001884.7 申请日:2007-04-12
- 公开(公告)号:EP2058633A1 公开(公告)日:2009-05-13
- 发明人: Sukegawa, Yoshihiro , Tokuyasu, Noboru , Kashio, Kaori , Terada, Daisuke
- 申请人: Hitachi Ltd.
- 申请人地址: 6-6, Marunouchi 1-chome Chiyoda-ku Tokyo 100-8280 JP
- 专利权人: Hitachi Ltd.
- 当前专利权人: Hitachi Ltd.
- 当前专利权人地址: 6-6, Marunouchi 1-chome Chiyoda-ku Tokyo 100-8280 JP
- 代理机构: Beetz & Partner
- 优先权: JP2006110849 20060413
- 主分类号: G01F1/69
- IPC分类号: G01F1/69 ; G01F1/692 ; G01F1/699 ; G01F1/696
摘要:
The invention relates to a flow rate measuring element (1) of a thermal type flow sensor is placed in the fluid to be measured. The element includes: a first heating resistor (7) for measuring a flow rate; a second heating resistor (10) for heating a support (5) for the first heating resistor (7); and current control circuits (101, 102) and which control heating resistor supply current so that the temperature of the second heating resistor (10) is higher than the temperature of the first heating resistor (7).
公开/授权文献:
- EP2058633B1 Thermal type flow sensor 公开/授权日:2012-03-21
IPC结构图谱:
G | 物理 |
--G01 | 测量;测试 |
----G01F | 容积、流量、质量流量或液位的测量;按容积进行测量 |
------G01F1/00 | 测量连续通过仪表的流体或流动固体材料的流量或质量流量 |
--------G01F1/68 | .应用热效应 |
----------G01F1/684 | ..结构配置;元件安装,例如与液流有关的 |
------------G01F1/688 | ...利用特殊类型的加热、冷却或传感元件 |
--------------G01F1/69 | ....电阻型的 |