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1. (WO2017156068) MICROWAVE HEATING DEVICE AND METHOD FOR OPERATING A MICROWAVE HEATING DEVICE

Pub. No.:    WO/2017/156068    International Application No.:    PCT/US2017/021279
Publication Date: Fri Sep 15 01:59:59 CEST 2017 International Filing Date: Thu Mar 09 00:59:59 CET 2017
IPC: H05B 6/68
H05B 6/70
Applicants: ILLINOIS TOOL WORKS INC.
Inventors: LANZA, Nicola
DEMASSARI, Chiara
GAMBATO, Francesco
SCLOCCHI, Michele
BACCARA, Andrea
FLIPOT, Benoît
Title: MICROWAVE HEATING DEVICE AND METHOD FOR OPERATING A MICROWAVE HEATING DEVICE
Abstract:
This disclosure relates to a microwave heating device and a method for operating a microwave heating device. The microwave heating device comprises at least two radiating portions that are adapted to radiate microwaves to the heating chamber and can be operated according to operational configurations that differ in frequency and/or in phase shift(s) between the radiated microwaves. A learning procedure can be executed in relation with at least one product positioned in the heating chamber. The learning procedure can be executed by changing frequency and phase shift(s) to sequentially operate the at least two radiating portions in a plurality of operational configurations, in such a way that, for each frequency, the at least two radiating portions are operated in a number of operational configurations that differ in phase shift(s) from one another. An energy efficiency can be calculated for each of said plurality of operational configurations and the obtained data are saved. A heating procedure may be executed after the learning procedure. In the heating procedure, the at least two radiating portions are operated according to at least one operational configuration that is selected on the basis of the data obtained in the learning procedure.