US 9,854,627 B2Granted

Induction heating system

AssigneeTokuden Co., Ltd.

InventorToru Tonomura

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Abstract

The present invention intends to run one induction heating apparatus using a three-phase AC power supply without use of a Scott connection transformer while preventing an occurrence of a phase where no current flows. An induction heating system uses the three-phase AC power supply to run the induction heating apparatus including an induction heating coil, and has an intermediate apparatus including a coil that is wound on an iron core with an even number of turns, forming a closed magnetic circuit. Additionally, a winding start point of the induction heating coil is connected to the U phase of the three-phase AC power supply and a winding end point of the same is connected to a midpoint of the intermediate coil. The winding start point and end point of the intermediate coil are connected to the V and W phases of the three-phase AC power supply, respectively.

Claims8

Dependent claims

An induction heating system that uses a three-phase AC power supply to run a single-phase induction heating apparatus including an induction heating coil, the induction heating system comprising:

an intermediate apparatus that intervenes between the single-phase induction heating apparatus and the three-phase AC power supply and includes an iron core for forming a closed magnetic circuit that is different from a closed magnetic circuit formed in the single-phase induction heating apparatus and a coil wound on the iron core and having an even number of turns, the intermediate apparatus being different from and provided separately from the single-phase induction heating apparatus, wherein:
one of a winding start point and a winding end point of the induction heating coil is electrically connected to one phase of the three-phase AC power supply, and the other one is electrically connected to a midpoint of the coil of the intermediate apparatus;
and
a winding start point and a winding end point of the coil of the intermediate apparatus are electrically connected to the remaining two phases of the three-phase AC power supply.

1 more element

Dependencies are inferred from the claim text.