Patent ID: 6084214
Filing Date: 2000-07-04
Classification: B23K

Abstract:
A reflow solder convection oven comprising:A) at least one heater element; andB) at least one blower assembly in fluid communication with the heater element, the blower assembly including:B.1) a mount structure including at least one intake port and at least two supply ports,B.2) a fan housing connected to the mount structure, the housing having:B.2.a) an interior surface defining at least two pressurization zones, andB.2.b) at least two outtake regions, each outtake region proximate a supply port of the fan mount structure,B.3) a wheel rotatably disposed in the housing proximate the intake port of the mount structure, the periphery of the wheel positioned in the housing to form the two pressurization zones, the interior surface of the housing defining at least two spline curves, each spline curve having a starting node proximate a pressurization zone where the periphery of the wheel is close to the interior surface of the housing, each spline curve further having a terminating node at an outtake region such that the interior surface of the housing is increasingly and steadily further away from the periphery of the wheel; andB.4) a motor attached to the housing and connected to the wheel.