VENTILIERTER DICHTKOPF MIT U-STRÖMUNG

摘要

An inductive cap sealer ( 10 ) for sealing an inner seal over an opening ( 54 ) in container ( 52 ) includes a vented sealing head ( 12 ). The sealing head ( 12 ) contains an induction coil ( 24 ) for producing an electromagnetic field when energized by a power supply. Field focusing elements ( 26 ) contain the coil ( 24 ) and direct the electromagnetic field to a sealing region beneath the sealing head ( 12 ). The housing ( 20 ) has a central inlet vent ( 40 ) flanked by two outlet vents ( 42, 44 ) aligned with a vent plate ( 46 ) inside the housing ( 20 ) having a plurality of small openings ( 48 ) which allow a fan ( 18 ) to blow cooling air through the sealing head from only one side of the sealing head ( 12 ) in a generally U-shaped flow pattern, preferably from the side opposite the sealing region. The field focusing elements ( 26 ) are spaced to allow the cooling air to flow around the field focusing elements ( 26 ) and past the coil ( 24 ).