| 摘要 |
PURPOSE:To enable to control the air-fuel ratio at a fixed value with respect to the change of temperature of preheated air, by inserting to connect a specific temperature-corrective bleeder to a signal piping, connected between a flow regulating valve in a fuel feed apassage and an air feed passage. CONSTITUTION:A temperature-corrective bleeder 1 is fitted to a signal piping 14, connected between an air feed passage 12 from a preheater 20 to a burner 15, and a flow controlling valve 18 in a fuel feed passage 17. The bleeder 1 is connected to one end of a rocket arm 7a, pivotably supporting the valve body 6a of a needle valve 6, interveningly provided between an air chamber 2 and a bleed chamber 5, to the bleed chamber 5, and the other end of a bleeder 1 is composed so as to be pushed by an actuating rod 9 of a temperature sensitive actuator 8, connected to an expansile fluid pipe 10 fitted to the feed passage 12, and the inlet port 2 and the outlet port 4 of an air chamber 2 are respectively connected to a feed passage 12 and a valve 18. When the temperature of air rises, a valve 6 is opened to decrease the signal pressure in a piping 14, accordingly, the valve 18 throttles the feeding rate of fuel. |
