Patent ID: 8701433
Filing Date: 2014-04-22
Classification: F25D,F28F

Abstract:
1. An evaporator door system comprising: a first refrigeration-driven evaporator that cools an environment using a compressed refrigerant; a second refrigeration-driven evaporator that cools the environment using the compressed refrigerant; a rotatable member, proximate to each of the first and second evaporators, respectively, that rotates about an axis of rotation; a first door member rolled around the rotatable member and movable from a rolled position to an unrolled position in which the first door member covers more of the first evaporator than when the first door member is in the rolled position; a second door member rolled around the respective rotatable member and movable from the rolled position to the unrolled position in which the second door member covers more of the second evaporator than when the second door member is in the rolled position; a programmable controller including programmed instructions, which when executed, the controller controls the evaporator door system based on a predetermined schedule such that the first door member is in the unrolled position during a defrost operation performed on the first evaporator and the second door member is in the rolled position during the defrost operation performed on the first evaporator and a first scraper disposed in contact with a first face of the first door member.