Abstract: A self contained, mechanical cooling apparatus is mountable on a door which is pivoted on hinges to a door frame. The door may be mounted for either exterior or interior service in a residential or commercial setting. The door frame is attached to the building structure in a conventional manner. The door provides a closure for a designated room and the door mounted cooling apparatus maintains the desired, generally lower, temperature in the room. Major cooling components mounted in the door include a refrigerant compressor, evaporator coil, condenser coil, accumulator, capillary tubing, refrigerant piping and electrical components. The parts are enclosed in a one piece, premolded plastic apparatus housing. Two supply air fans are mounted within the housing, and molded in supply and return air grilles communicate with the enclosed space.

Abstract: A hermetic vertical shaft compressor for refrigeration or air conditioning uses a single-stage centrifugal pump formed in the rotor assembly to lubricate bearing surfaces. Oil is picked up from a sump at the base of the rotor, and is thrown into an annulus in the rotor. From here the oil proceeds up axial slots formed in the rotor laminations to an upper annulus, where it feeds lubrication channels in the upper bearing. The shaft has a reduced diameter thereby reducing material costs and reducing hystersis and eddy current losses, while achieving increased pumping capacity and pressure.