Claims
- 1. A conveyorized microwave hot air oven, comprising:
- a conductive enclosure having entrance and exit openings;
- thermally insulating material defining a tunnel from said entrance opening to said exit opening, said material being substantially transparent to microwave energy;
- said material being spaced from the walls of said enclosure wherein the volume within said tunnel is substantially less than the volume within said enclosure;
- a conveyor system running through said tunnel for transporting objects therethrough;
- means for directing heated air under pressure into said tunnel at a first region of said tunnel;
- means for exhausting said heated air from a second region of said tunnel; and
- a directive microwave radiator positioned within said enclosure but outside said tunnel, said radiator radiating microwave energy toward said microwave transparent tunnel, said energy radiating through said microwave transparent material to heat objects passing through said tunnel on said conveyor system.
- 2. The combination in accordance with claim 1 wherein said insulating material comprises firebrick.
- 3. The combination in accordance with claim 1 wherein said first region is outside said enclosure adjacent to said entrance opening.
- 4. The combination in accordance with claim 1 wherein said second region is outside said enclosure adjacent to said exit opening.
CROSS-REFERENCE TO RELATED CASES
This is a continuation of application Ser. No. 103,262, filed Dec. 13, 1979, which is a continuation of application Ser. No. 949,294, filed Oct. 6, 1978 (now both abandoned).
US Referenced Citations (13)
Foreign Referenced Citations (1)
Number |
Date |
Country |
1947738 |
Jul 1978 |
DEX |
Continuations (2)
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Number |
Date |
Country |
Parent |
103262 |
Dec 1979 |
|
Parent |
949294 |
Oct 1978 |
|