Patent ID: 8196799

Claim:
A reflow oven chamber assembly of a reflow oven of the type used to join electronic components to a substrate, the reflow oven chamber assembly comprising: a chamber housing; at least one heating element disposed in the chamber housing; and at least one compression box assembly disposed in the chamber housing, the at least one compression box assembly including a compression box housing having four sides, each having an intake port formed therein, an intake duct disposed in the compression box, the intake duct having four sides, each having an inlet opening formed therein, the inlet openings being aligned to and in fluid communication with the port respective intake ports of the compression box housing and an outlet opening, a diffuser plate disposed entirely above the intake duct, and a pressure equalizing plate positioned between the intake duct and the diffuser plate, the pressure equalizing plate extending from one end of the intake duct to an opposite end of the intake duct to bisect the compression box housing, wherein the compression box assembly is configured to draw heated air into the compression box housing through the intake ports and into the inlet openings of the intake duct and exhaust air out of the outlet opening of the intake duct to the diffuser plate.