Patent ID: 8079232
Filing Date: 2011-12-20
Classification: F24D,F24F,Y02B

Abstract:
1. An improved heating system for a dwelling in which an indoor space is defined by dwelling walls, a dwelling floor and a dwelling ceiling surrounded by outdoor space, the dwelling walls, floor and ceiling being made of conventional building materials that thermally insulate to substantially limit the transfer of thermal energy from the indoor space to the outdoor space, a first blower moving air through a first air path in a cabinet housing disposed in the indoor space, a compressor compressing fluid refrigerant in a conduit in fluid communication with a first warmed heat exchanger that is enclosed in the cabinet housing in the first air path and receives air, thereby warming the air, and an expansion valve in the conduit, the improvement comprising: (a) a cooled heat exchanger during a heating operation with air in the indoor space passing over outer surfaces of the cooled heat exchanger to transfer thermal energy to the refrigerant, and the cooled heat exchanger's interior receiving the refrigerant flowing through the conduit, the cooled heat exchanger being mounted to the conduit with the compressor and the expansion valve interposed between the first warmed heat exchanger and the cooled heat exchanger and the refrigerant in the conduit also flowing through the cooled heat exchanger; (b) a second blower moving air in the indoor space over the cooled heat exchanger through a second air path that empties into the outdoor space; (c) ducting in fluid communication with the second air path and the outdoor space guiding air in the second air path from the cooled heat exchanger out of the indoor space; and (d) a second warmed heat exchanger receiving the flowing refrigerant in the conduit in parallel with the first warmed heat exchanger, thereby receiving refrigerant of substantially the same temperature and pressure as the first warmed heat exchanger, and enclosed in the cabinet housing in the first air path downstream from the first warmed heat exchanger receiving air after the air is warmed by passing over the first warmed heat exchanger and before the air exits the cabinet housing.