Drying and gas or vapor contact with solids – Apparatus – With means to treat gas or vapor
Patent
1997-02-26
1999-06-15
Bennett, Henry
Drying and gas or vapor contact with solids
Apparatus
With means to treat gas or vapor
34 77, 34212, F26B 2106
Patent
active
059114860
ABSTRACT:
A combination product cooling and flux management apparatus is mounted above a reflow soldering oven. The apparatus has a sealed housing with four openings: an ambient air inlet, an ambient air outlet, a recirculating gas inlet and a recirculating gas outlet. The recirculating gas blower is mounted in a first end of the housing and draws air into the recirculating gas inlet, through a recirculating gas side of a gas-to-gas heat exchanger and out the recirculating gas outlet, where it is recirculated through a product cooling chamber and back into the recirculating gas inlet. The ambient air blower is mounted in a second end of the housing and draws air into the ambient air inlet, through an ambient air side of the gas-to-gas heat exchanger and out the ambient air outlet to the surrounding atmosphere. The gas-to-gas heat exchanger is mounted between the blowers within the housing and has a pleated serpentine heat transfer surface, which are vertically oriented and define a bottomless recirculating gas side of the heat exchanger. Heat exchanger endplates, combined with the pleated heat exchanger surface define a sealed barrier between the recirculating gas and the ambient air. The pleated surface serves as a common wall between the gas flows and cools the recirculating gas to a temperature where the flux entrapped in the recirculating gas condenses on the pleated surface and drips into a drip collector plate mounted below the heat exchanger.
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Beaupre Mark O.
Dow Stephen J.
Durdag Omer Kerem
Sherwin Thomas A.
Silveri Robert S.
Bennett Henry
Conceptronic, Inc.
Gravini Stephen M.
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