High-frequency thawing apparatus and thawing method with...

Details High-frequency thawing apparatus and thawing method with... High-frequency thawing apparatus and thawing method with...

2006-08-10

2008-12-30

Leung, Philip H (Department: 3742)

Electric heating

Capacitive dielectric heating

Specific heating application

C219S776000, C219S780000, C099S451000, C099S358000, C426S244000, C426S524000

Reexamination Certificate

active

07470878

ABSTRACT:
Thawing is achieved by applying high-frequency power to a frozen material (R) sandwiched between opposing electrodes. A thawing section of a thawing apparatus (10) includes unit electrodes (302) for a first electrode group as a former stage, unit electrodes (303) for a second electrode group as a latter stage, and unit electrodes (304) for a third electrode group as a further stage. The unit electrodes (302) for the first electrode group are set so that the area of the electrode surface is smaller than the area of the sandwiched surface of the frozen material (R). The unit electrodes (303) for the second top electrode group are larger than the area of the unit electrodes (302) for the first electrode group. The unit electrodes (304) for the third electrode group are larger than the area of the unit electrodes (303) for the second electrode group.

REFERENCES:
patent: 4303820 (1981-12-01), Stottmann et al.
patent: 4320276 (1982-03-01), Takeuchi et al.
patent: 4974503 (1990-12-01), Koch
patent: 6247395 (2001-06-01), Yamamoto
patent: 55-156581 (1980-12-01), None
patent: 5-15792 (1993-03-01), None
patent: 8-266257 (1996-10-01), None
patent: WO 00/51450 (2000-09-01), None

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