| 摘要 |
An improved burner for heating water in a hot water system is provided. This burner includes an inlet tube having flared ends and a constricted middle portion to provide an increased amount of air into the barrier. The burner also includes a barrel which communicates with the inlet tube to receive fuel gas and air from it. It vents this air and fuel gas mixture through a large number of ports formed through its sidewalls and arranged in a predetermined pattern to produce a continuous combustion layer when the user ignites the venting mixture. These ports have a width substantially smaller than their length and they produce small, nonluminous, bluish flames which form the combustion layer. This combustion layer burns hot to raise the temperature of the barrel segments surrounding the ports to a level at which the segments glow red and emit infrared heat.
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