Patent ID: 8724973

Claim:
A heat equalizer comprising: a container structure including an inner container and an outer container in which a working fluid is held, respective upper ends of said inner container and said outer container being joined to form a hollow portion between said inner container and said outer container; a material feed pipe extending from an outside of said container structure to an inner surface of said inner container and configured to feed a material to be heated to within the inner container; heating means placed at a bottom of said outer container; and said inner container having a bottom surface including a plurality of protrusions protruding upwards toward an inside of said inner container away from a bottom surface of said outer container, and depressions formed by said bottom surface depressed inward of said protrusions and capable of receiving a vaporized working fluid from the outer container, the material to be heated being fed within the container and exposed to said protrusions for heat exchange from the vaporized working fluid to said material to be heated through said protrusions.