JPH02100045U - - Google Patents

Description

[Brief explanation of the drawing]

Fig. 1a is a circuit diagram of a catalytic combustor according to an embodiment of the present invention, Fig. 1b is an enlarged sectional view taken along the line A--A in Fig. FIG. 3, which is a block diagram of the combustion control device, is a combustion control flowchart of one embodiment. DESCRIPTION OF SYMBOLS 1... Catalytic burner, 2... Discharge pipe, 3... Electric heater, 4... First thermistor, 5... Second thermistor, 6... Main pipe line, 7... Dual solenoid valve, 8... Proportional valve,
9... Operating unit, 9a... Ignition switch, 9b... Volume, 10... Control unit, 11, 13... Switching transistor, 12... Transistor.

Claims (1)

[Claims for Utility Model Registration] A catalytic burner having a catalytic mat; an electric heater for heating the catalytic mat; a first temperature detection element for detecting the temperature of the electric heater; and a first temperature detecting element for detecting the temperature of the catalytic mat. a second temperature detection element; an energization control means for controlling energization to the electric heater; a main conduit for fuel supply connected to the catalytic burner; and a fuel supply passage interposed in the main conduit for opening and closing the fuel supply passage. a proportional valve that is interposed in series with the solenoid valve in the main pipe and whose opening degree can be adjusted in proportion to the value of the current supplied; an operating section that includes an ignition switch; a first signal generation means for outputting an energization start signal to the energization control means by operating a switch; and a first signal generating means corresponding to the temperature detected by the first temperature detection element and the combustible temperature of the fuel when the electric heater is energized. Compare with the reference temperature, and the detected temperature is the first
a second signal generating means for outputting an open signal to the solenoid valve when the reference temperature of the solenoid valve is reached; a current value control means for controlling the current value applied to the proportional valve based on the detected temperature; and a second current value control means corresponding to the temperature detected by the second temperature detection element and the combustion temperature of the catalyst mat when the electric heater is energized. a third signal generating means that compares the detected temperature with a reference temperature and outputs an energization stop signal to the energization control means when the detected temperature reaches a second reference temperature; Compare the detected temperature with a third reference temperature corresponding to a threshold temperature higher than the combustion temperature, and output a closing signal to the electromagnetic valve when the detected temperature exceeds the third reference temperature. A fourth signal generating means compares the temperature detected by the second temperature detection element during combustion with a fourth reference temperature corresponding to a threshold temperature lower than the temperature during combustion, and the detected temperature is determined to be the fourth reference temperature. a fifth signal generating means for outputting a closing signal to the electromagnetic valve when the temperature falls below a reference temperature of the solenoid valve.