Apparatus for microwave heating of planar products
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United States of America Patent
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Oct 16, 2012
Grant Date -
Mar 11, 2010
app pub date -
Sep 4, 2009
filing date -
Sep 11, 2008
priority date (Note) -
Expired
status (Latency Note)
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Abstract
In a microwave heating apparatus, the fundamental TE10 mode of the standard waveguide (5) having a standard rectangular cross-section is fed into an elongated heating cavity (2) having an enlarged rectangular cross-section in which the shorter side of the standard waveguide is enlarged to a length which can accommodate the desired width of a board (8) to be heated. A pair of lateral slots (25) is provided parallel in the opposite enlarged walls (11) of the heating cavity (2) to form a track for the board (8) to travel across the cavity. As the initially longer sidewall (11) of the standard waveguide is unchanged, the fundamental mode is not affected but the electric field is uniformly distributed along the width of the board (8) traversing the electric field and the cavity. As a result, wider products can be heated and a more uniform heating pattern can be achieved.
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International Classification(s)
- 2009 Application Filing Year
- H05B Class
- 1752 Applications Filed
- 1044 Patents Issued To-Date
- 59.59 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 1 Citation Count
- H05B Class
- 6.86 % this patent is cited more than
- 13 Age
