| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide an air flow measuring module with a module integrated with a circuit part and a sub-flow-passage part provided with almost all the functions of a heat-evolution resistance type air flow measuring instrument, and capable of reducing a size and a weight. <P>SOLUTION: The flow measuring module is provided integrally with: the sub-flow-passage having a heat-evolution resistor and a heat sensitive resistor; a fixing member for fixation; the heat-evolution resistor and the heat sensitive resistor provided in the sub-flow-passage; and an electronic circuit. The sub-flow-passage is inserted from an insertion hole provided in a body constituting a main flow passage, and the fixing member is fixed onto the body to position the sub-flow-passage in the main flow passage and is supported overhungly. The sub-flow-passage has: a duct line arranged with the heat-evolution resistor and the heat sensitive resistor; and a receiving-pan-like bottom face part provided in a side more distal from the fixing member than an inlet of the duct line, the duct line has a duct line part provided in parallel to the bottom face part, in a downstream along a direction of a main flow flowing through the main flow passage on the bottom face, and flow passage walls in sides adjacent each other between the bottom face part and the duct line part are formed respectively of planes. <P>COPYRIGHT: (C)2007,JPO&INPIT</p> |
