PURPOSE: To prevent a user from forgetting shutting a main valve of a gas burner 15.
CONSTITUTION: A draft chamber is provided with a cabinet main body 1 having an opened front side and formed with a working space 2 inside, a high efficiency filter 6 provided at the upper side of the working space 2 of the cabinet main body 1, a blower 7 for forcibly feeding air to the high efficiency filter 6, a main switch for turning on an off the operattion of the blower 7 and a working table 5 provided at the lower side of the working space 2. The gas burner 15 for sterilizing is arranged in the working space 2. A connection piece 17 for main flame having a solenoid valve and a connection piece 18 for pilot flame are connected to the gas burner 15. The solenoid valve is opened by a foot switch and closed linked with the main switch.
SAGA TADAHISA
SUGIMOTO SHINJI
Next Patent: BURN PREVENTIVE STRUCTURE OF HIGH TEMPERATURE VESSEL