Heat exchange – Movable heating or cooling surface – Rotary drum
Patent
1992-05-29
1994-02-22
Ford, John K.
Heat exchange
Movable heating or cooling surface
Rotary drum
165 34, 165 481, 165 61, 165154, 137340, 2221461, 2221465, 2221466, 239133, 239134, 392468, 392472, 392480, F25B 2900, F28F 2700, F28F 2702
Patent
active
052879135
ABSTRACT:
A temperature control system for an adhesive application system in which adhesive is delivered from a pump to a nozzle for application in bead form to a part. The control system includes a hose assembly extending from the pump to the nozzle and including an inner hose for carrying the adhesive and an outer hose defining an annular space between the outer hose and the inner hose for passage of water in a direction opposite to the direction of flow of the adhesive; a water conditioner selectively heating and cooling the water; and a controller receiving a reference signal representing a desired temperature of the adhesive at the nozzle and an actual adhesive temperature signal provided by a temperature sensor sensing the temperature of the adhesive being delivered to the nozzle and operative to compare the signals and generate appropriate signals for control of the water conditioner in a sense to maintain the desired water temperature and thereby the desired adhesive temperature. The hose assembly includes rigid end blocks with the outer hose extending between the end blocks and the inner hose communicating at its opposite ends with central passages in the respective end blocks to allow the delivery of adhesive through one end block, through the inner hose, and through the other end block to the nozzle. The end blocks also include passages communicating with the space between the hoses to allow the delivery of water to the space and the discharge of water from the space.
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Cline William
Dunning Dave
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