Restraint method for overcoming heating irregularity and improving heating equipment efficiency for beverage cans using high-frequency induction heating

We were able to reduce heating irregularities in equipment for heating beverage cans by using the high-frequency induction heating method and determining the resulting improvement in the heating efficiency. The heating irregularity between the top and bottom of the can was reduced to less than 3C by improving the arrangement of the heating coils for the beverage can by thinning the winding and changing the circuit configuration. The efficiency of power conversion was improved from 93.0% to 97.4%. In this paper, the configuration of the equipment and the experimental results are reported.