Electric heating – Heating devices – Combined with container – enclosure – or support for material...
Patent
1999-08-05
2000-07-25
Pelham, Joseph
Electric heating
Heating devices
Combined with container, enclosure, or support for material...
29426, 2221465, F27B 1414, B67D 563
Patent
active
060939125
ABSTRACT:
A thermoplastic melting apparatus for melting and dispensing hot melted adhesive materials includes a melting tank having an output line coupled to the bottom thereof for discharging a melted hot melt adhesive from the melting tank. A plurality of finned heat exchanger units are each mounted to the melting tank in the bottom portion of the tank but spaced from the bottom of the tank to allow for a 360.degree. contact with the melted thermoplastic material being heated by the heat exchanger unit. Each of the finned heat exchanger units have an elongated center bore therein and a resistance heating element mounted in each elongated bore. Each of the plurality of finned heat exchanger units is mounted within the melting tank chamber by a press fit aligning the opening in the elongated center bore with an opening in a wall of the tank. A threaded bolt is threaded from outside the tank into the opening to the center bore of the center core of each heat exchanger unit. The mounting bolt has a passageway therethrough for connecting to the heating element within the finned heat exchanger unit. The plurality of finned heat exchanger units are each mounted parallel to each other. Each fin has a pair of angled sides, each angled side being connected to an angled side of an adjacent fin with a curved surface between the bases of the fins. Each fin also has a curved apex and is generally circular in shape.
REFERENCES:
patent: 4666066 (1987-05-01), Boccagno et al.
patent: 5374120 (1994-12-01), Possanza et al.
patent: 5657904 (1997-08-01), Frates et al.
Hobby III William M.
Pelham Joseph
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