Hot wire air flow meter
    2.
    发明授权
    Hot wire air flow meter 失效
    热丝空气流量计

    公开(公告)号:US4790182A

    公开(公告)日:1988-12-13

    申请号:US913379

    申请日:1986-09-30

    摘要: A platinum wire (2) is wound in the form of coil. An outer surface of the coiled wire (2) is overcoated with a glass member (4). The coiled wire (2) is welded to supporting member (3). An exothermic resistor (1; 1A, 1B) comprised the coiled wire (12), the glass member (4) and the supporting member (3), and has no bobbin therein. Such an exothermic resistor (1; 1A, 1B) free from a bobbin is used as a hot wire element (1A) and a cold wire element (1B) in a hot wire air flow meter. The quantity of heat generated on the coiled wire (2) hardly transmit through the supporting member (3) and is carried away almost through air. The transient response characteristics under sudden change of an amount of air flow can be improved.

    摘要翻译: 铂线(2)以线圈的形式缠绕。 螺旋线(2)的外表面用玻璃构件(4)外涂。 螺旋线(2)焊接到支撑构件(3)上。 放热电阻器(1; 1A,1B)包括线圈(12),玻璃构件(4)和支撑构件(3),并且其中没有线轴。 这种没有绕线管的放热电阻器(1; 1A,1B)用作热丝空气流量计中的热丝元件(1A)和冷线元件(1B)。 在线圈(2)上产生的热量几乎不透过支撑部件(3)传播,几乎通过空气传送。 可以提高空气流量突然变化下的瞬态响应特性。