Title:
熱式流量計
Document Type and Number:
Japanese Patent JP5675708
Kind Code:
B2
Abstract:
In order to provide a thermal flow meter for improving workability of a flow rate measurement device having a temperature measurement function for the measurement target gas and measurement accuracy for measuring a temperature, the thermal flow meter is structured such that a flow rate measurement circuit package having a protrusion for measuring a gas temperature is formed through resin molding. An inlet port opened to the upstream side of the measurement target gas is formed, a protrusion is arranged inside the inlet port, an inlet port and an outlet port are formed in the front and rear covers along the protrusion, and the measurement target gas received from the inlet port flows along the protrusion. Since the measurement target gas subjected to the measurement flows along the protrusion, it is possible to reduce influence of the heat from other heat resources and improve measurement accuracy.
Inventors:
徳安 昇
半沢 恵二
森野 毅
土井 良介
上ノ段 暁
田代 忍
半沢 恵二
森野 毅
土井 良介
上ノ段 暁
田代 忍
Application Number:
JP2012135307A
Publication Date:
February 25, 2015
Filing Date:
June 15, 2012
Export Citation:
Assignee:
日立オートモティブシステムズ株式会社
International Classes:
G01F1/684
Attorney, Agent or Firm:
Manabu Inoue
Yuji Toda
Shigemi Iwasaki
Yuji Toda
Shigemi Iwasaki