| 摘要 |
<P>PROBLEM TO BE SOLVED: To ensure reliable start of a heating boiler and to prevent failure in a premixing combustion device. <P>SOLUTION: In this premixing combustion device (1) for the heating boiler, which includes a blower (2) for delivering a combustion mixture composed of fuel and air to a combustion zone from an outlet opening (8) of the blower (2) via a burner cylinder (9), and in which a mixing device (3) disposed at an upstream side of the blower (2) prepares the combustion mixture, a solution to ensure the reliable start of the heating boiler and to prevent failure is provided with a simple design. This is achieved by means of a flow rate reducing device (10) including a flow rate reducing member (13) of which a position is adjustable between a position for opening the outlet opening (8) of the blower (2) and a position for narrowing the outlet opening (8) of the blower (2), and which is disposed between the outlet opening (8) of the blower (2) and the burner cylinder (9). <P>COPYRIGHT: (C)2012,JPO&INPIT |
