To provide a microwave heating device capable of heating exhaust gas to a predetermined temperature in a short period of time by making a microwave absorbing heating element efficiently generate heat by small electric power, enabling the miniaturization of a device itself, being effectively mounted even to a vehicle, and heating exhaust gas to the predetermined temperature or higher and efficiently removing a contaminant by improving microwave absorption efficiency, namely, the microwave heat conversion efficiency of the microwave absorption heating element.
The microwave heating device is provided with a plurality of metal vent pipes having axial lines in a direction coincident with an exhaust gas direction and making exhaust gas flow therein in a hollow part of a metal storage body, and a plurality of microwave absorption heating elements 19 provided on the outer circumference surface of each metal vent pipes and radially extending with a predetermined width and at length covering substantially the whole body in an axial direction. Heat is generated by outputting a microwave from a microwave output means and making each microwave absorption heating element absorb the microwave to heat exhaust gas flowing in the vent pipes.
COPYRIGHT: (C)2009,JPO&INPIT
Noda Ryosei
Hiroki Ansai
Kanetetsu Shokai Ltd.
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