| 摘要 |
In a heating device having a microwave generator (110) for generating microwaves, a waveguide (113) for propagating the microwaves, a matching element (111) for adjusting the impedance inside the waveguide (113) and a flow pipe (101) for passing a substance to be heated, an outer pipe (104) of low dielectric constant is arranged to circulate a heat transfer medium (103) for heat exchange around the flow pipe (101) adapted to pass the heated substance and a circulation constant temperature bath (115) is provided for adjusting the temperature of the heat transfer medium (103) for heat exchange and for circulating it, so that microwaves are irradiated while adjusting the temperature of the heat transfer medium (103) for heat exchange to a desired value by means of the circulation constant bath (115) and circulating the heat transfer medium around the flow pipe (101).
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