| 摘要 |
<p>A gas-air mixture production device is proposed which can reduce noise produced while the device is operating without affecting the ability of the venturi mixer to produce a gas-air mixture. The gas-air mixture (M) is produced in a venturi mixer (1) by mixing raw material gas (G) with combustion air (A). A parallel portion (7) having an inner diameter which is constant in the flow direction of the gas-air mixture (M) is connected to the outlet of a throat (5) of the venturi mixer (1). A noise suppressor (2) is provided on the parallel portion (7) which includes a pipe (10), and a tubular noise suppressing member (11) made of foamed polyethylene. By passing the gas-air mixture (M) through the noise suppressing member (11), it is possible to effectively reduce noise generated when raw material gas (G) and combustion air (A) are mixed together without affecting the flow of the gas-air mixture (M).</p> |
