| 摘要 |
PURPOSE: A gas-air mixing device with a separable passage is provided to minimize flow losses with reducing flow noise by simplifying the passage. CONSTITUTION: A gas-air mixing device with a separable passage comprises a gas supply pipe(112), an air supply pipe(113), a pneumatic valve(153), and a driving unit. A first gas passage(115) and a second gas passage(116) diverge from the gas supply pipe. A first air passage(117) and a second air passage(118) are diverge from the air supply pipe by an air passage branch mechanism(170). The pneumatic valve controls the supply amount of gas to the gas supply pipe. The pneumatic valve is connected to an inlet of the gas supply pipe. The valve bodies of the driving unit are connected to a rod(163), and the rod moves up and down by the magnetic force from an electromagnet(165). |
