| 摘要 |
<p>PURPOSE:To reduce the influence of a drift by constituting the straightening plate of a straightening grating, fitted in a main passage, slantingly to the flow direction of air. CONSTITUTION:The air passage consists of the body 1 of the main passage and a by-pass passage 2 to which part of the main passage is shunt, and the passage 2 is provided eccentrically with the center of the body 1. Further, a hot wire 3 for measuring the amount of sucked air and a temperature sensing resistor 4 for the temperature compensation of the sucked air are provided in the passage 2. The hot wire 3 is controlled by a module 5 for control to constant temperature and variation in the amount of the air is led out as an electric signal. Further, the straightening grating 6 is provided at the entrance of the body 1 and the straightening plate 7 of the grating 6 is provided slantingly to the flow to reduce the influence of the drift. The grating 6 is holed and slanted by pressing a metallic plate. Thus, dynamic pressure to the by-pass passage is reducible.</p> |
