HIGH FREQUENCY HEATING SYSTEM

摘要

PROBLEM TO BE SOLVED: To obtain excellent radio wave sealing performance by constituting an input impedance adjusting admittance element of a choke groove in the lengthwise direction in a radio wave sealing choke groove by a conductor plate or a conductor bar installed on the tip edge of a conductor piece extending inside the choke groove from the outer peripheral edge of a conductor contact piece to constitute a choke groove wall. SOLUTION: An addmittance element 4 is constituted of a conductor plate or a conductor bar installed on the tip of a conductor piece 2 extending inside a choke groove 10 from the outer peripheral edge of a conductor contact piece 1 to constitute a choke groove wall so as to be opposed to a front plate 3. An opening part 5 is an opening part of the choke groove 10, and since a space inside of the choke groove 10 is formed as a structure to propagating a radio wave as a waveguide, a closed space is constituted in respective wall surfaces to constitute the choke groove 10, and a radio wave propagating in the choke groove 10 is shut up inside the wall surfaces to constitute the choke groove 10. A space is obviated from the outside of a choke groove structure body, and size reduction in a choke structure can be attained.