| 摘要 |
<p>A chamber (3) is internally divided into an upper (8) and lower vol. by a diaphragm (4). The lower chamber vol. contains an inlet (1) and outlet (2) connected to the upper chamber vol. via air lines (9a,9). A valve (V) opens and closes the gas inlet air line. The outlet is opened and closed by a valve (14a) controlled by the diaphragm via a plate (10) carrying permanent magnets(11). The outlet valve is repeatedly opened and closed simultaneously with a read or tongue switch (18) on the bottom of the chamber. The membrane is rapidly displaced upwards when a pressure difference in the chamber causes a large gas outflow, thus pulling an elastic resoting plate (17) upwards as the valve closes the outlet.</p> |
