Microwave heating apparatus for heating a flowing fluid

Details Microwave heating apparatus for heating a flowing fluid Microwave heating apparatus for heating a flowing fluid

1996-08-30

1998-02-17

Leung, Philip H.

Electric heating

Microwave heating

Fluid heater

219693, 219710, H05B 678, H05B 668

Patent

active

057193800

ABSTRACT:
An apparatus for heating a flowing fluid with microwave energy comprising a conduit having an inlet portion, an outlet portion, and a retention portion wherein at least the retention portion of the conduit is fabricated from a material which is substantially microwave transparent. A temperature probe is provided for measuring the temperature of the flowing fluid in the outlet portion. The cross-sectional area of the retention portion is substantially greater than the cross-sectional area of the outlet portion such that the flow rate through the retention portion is slower than the flow rate through the outlet portion from the retention portion to the temperature probe. Microwave energy is used to heat the flowing fluid in the retention portion, the microwave energy being generated by a source which is controlled in response to a signal from the temperature probe. The retention portion of the conduit resides within a wave guide and passes transversely therethrough. The wave guide is dimensioned to allow a standing electromagnetic wave to be set up therein with the retention portion residing at a region of maximum field strength.

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