Title:
流量測定装置
Document Type and Number:
Japanese Patent JP3577941
Kind Code:
B2
Abstract:
A flow rate measuring device includes a flow rate measuring duct for placement in a primary passage for a fluid, extending substantially parallel to the primary passage, and a flow rate detector in the flow rate measuring duct for measuring a flow rate of the fluid in the primary passage, the flow rate measuring duct having a downstream wall including a notch or a through hole. The downstream wall may include an air-permeable member. The flow rate measuring device may include a projection on an outer wall of the flow rate measuring duct upstream of the notch, through hole, or air-permeable member, the projection extending in a circumferential direction with respect to the flow rate measuring duct.
Inventors:
Shingo Hamada
Tomoya Yamakawa
Fumika Yonezawa
Hiroyuki Uramachi
Takeji Oshima
Satoru Koto
Tomoya Yamakawa
Fumika Yonezawa
Hiroyuki Uramachi
Takeji Oshima
Satoru Koto
Application Number:
JP9011998A
Publication Date:
October 20, 2004
Filing Date:
April 02, 1998
Export Citation:
Assignee:
Mitsubishi Electric Corporation
International Classes:
G01F1/68; F02D35/00; G01F1/684; G01F1/69; G01F1/72; G01F5/00; (IPC1-7): G01F1/684
Domestic Patent References:
| JP9145439A | ||||
| JP62060849U | ||||
| JP1207635A | ||||
| JP9329478A | ||||
| JP9202133A |
Attorney, Agent or Firm:
Kaneo Miyata
Yahei Takase
Yahei Takase