发明名称 HEATING RESISTANCE TYPE AIR FLOW RATE MEASURING APPARATUS
摘要 <p>PURPOSE:To handle a module as one product and prevent the deterioration of measurement precision due to small-size, light-weight, environment change, and installation failure by uniting a circuit part and an auxiliary flow route part to compose a module. CONSTITUTION:An electronic circuit 8 and a circuit housing 9 are fixed in the upper face of a base member 7, a connector 11 is united with the housing 9, and the upper face of the housing 9 is covered with a cover 10. An auxiliary flow route 3 is made to have an L-shaped flow route composed of an inlet open face 301 opened in a face vertical to the base member 7, a first route 302 in parallel to the member 7, a second route 304 vertical to the member 7, an outlet open face 305 opened in a face in parallel to the base member 7, and a rectangularly curved part 303. The auxiliary flow route composing member 4 is fixed in the base member 7 so as to position a heat-generating resistor 1 in the flow route 302 and a temperature sensing resistor 2 in the curved part 303. Consequently, a module in which a circuit part and an auxiliary route are united is composed.</p>
申请公布号 JPH085427(A) 申请公布日期 1996.01.12
申请号 JP19940116240 申请日期 1994.05.30
申请人 HITACHI LTD;HITACHI KAA ENG:KK 发明人 IGARASHI SHINYA;KOBAYASHI CHIHIRO;HIRAYAMA HIROSHI;SAITO TAKAYUKI;ARAI NOBUKATSU
分类号 G01F1/68;F02D35/00;G01F1/684;G01F5/00;(IPC1-7):G01F1/68 主分类号 G01F1/68
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