E - Fixed Constructions – 01 – C
Patent
E - Fixed Constructions
01
C
E01C 19/16 (2006.01) B67D 99/00 (2010.01) B05C 11/10 (2006.01) E01C 19/45 (2006.01) H05B 3/40 (2006.01)
Patent
CA 2258612
A method and heating system for a hose and dispenser wand of a hot melt mix applicator using a three phase heating element powered by a generator to heat the hose and wand to maintain hot melt mix material within the hose and wand in a flowable state. To selectively energize the generator to control heat input, the heating system has a controller in communication with a temperature sensor carried by the hose or wand, and an output in communication with a generator control input. The generator control input enables operation of the generator to be controlled by the controller for controlling heating of the hose and wand. The heating element is a cord having a first wire receiving a phase of the three phase current, a second wire receiving another phase of the current, and a third wire receiving another phase of the current, with the cord being wrapped about the hose and wand in a helical configuration. The generator preferably is a vehicle alternator modified so that it outputs three phase electrical power without requiring any voltage or current regulation. In a preferred method, the controller energizes the generator when the sensed temperature of the hot melt mix falls to or below a predetermined setpoint control temperature and deenergizes the generator when the sensed temperature rises to or above a predetermined setpoint control temperature.
La présente invention concerne un système de chauffage pour un tuyau (22) d'applicateur de mélange thermofusible et un tube distributeur (24). Le système comporte une résistance chauffante triphasée (30) alimentée par un générateur (166) représenté par un alternateur de véhicule (194) entraîné par un moteur à combustion interne (52) permettant de chauffer le tuyau (22), le tube distributeur (24) et le mélange de substance thermofusible se trouvant à l'intérieur. Un organe de commande (46) relié à une sonde thermique (122) portée par le tuyau (22) permet de lancer de manière sélective le générateur (166) fournissant le courant de chauffage à la résistance (30) afin de maintenir le mélange thermofusible à la température voulue. La résistance comprend le câblage triphasé (98, 100, 102) de l'élément chauffant entourant le tuyau (22) et le tube distributeur (24).
Schave Floyd D.
Timme Donald L.
Crafco Inc.
Goudreau Gage Dubuc
LandOfFree
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