초록 ▼

A dual source heat pump system is disclosed for automatically selecting in either the heating or cooling mode of operation that source which will most efficiently meet the heating or cooling demand required of the system. The heat pump system includes valves located so that the heat exchanger associ

A dual source heat pump system is disclosed for automatically selecting in either the heating or cooling mode of operation that source which will most efficiently meet the heating or cooling demand required of the system. The heat pump system includes valves located so that the heat exchanger associated with the source not selected can be isolated from the remainder of the system and temporary pumping cycles initiated at the conclusion of a heating or cooling cycle for pumping all the refrigerant into the indoor space exchanger coil. Virtually all the refrigerant charge is thereby maintained in the active portions of the heat pump system while the inactive portion is completely isolated.

대표청구항 ▼

A heat pump system for either heating or cooling an enclosed area, comprising: (a) a compressor means for compressing a refrigerant to be flowed through conduits of the system; (b) a reversing means for selecting the direction of the refrigerant flow through the system depending upon whether the sys

A heat pump system for either heating or cooling an enclosed area, comprising: (a) a compressor means for compressing a refrigerant to be flowed through conduits of the system; (b) a reversing means for selecting the direction of the refrigerant flow through the system depending upon whether the system is operating in either its heating or cooling mode; (c) a first heat exchanger means located within the enclosed area for either heating or cooling the air to be circulated within said enclosed area; (d) an outdoor heat exchanger means acting either as an evaporator or a condenser depending upon whether the system is operating in either its heating or cooling mode; (e) a second indoor heat exchanger for providing an alternative source of heat to said outdoor heat exchanger means when the system is operating in its heating mode; and (f) a temperature discriminator means for automatically selecting either the outdoor heat exchanger means or the second indoor heat exchanger means as the operative means for exchanging heat with a source depending upon which source will provide more efficient operation for the system.