초록 ▼

A heat pump system having a defrost subcircuit that draws heat from a geothermal heat source. The defrost subcircuit is connected to the outdoor air coil in parallel with the indoor coil. The system includes a control mechanism for selectively circulating refrigerant through the defrost subcircuit b

A heat pump system having a defrost subcircuit that draws heat from a geothermal heat source. The defrost subcircuit is connected to the outdoor air coil in parallel with the indoor coil. The system includes a control mechanism for selectively circulating refrigerant through the defrost subcircuit but not the indoor air coil during the defrost mode. The heat pump system further includes components which permit the defrost subcircuit to be pumped down when the system leaves the defrost mode.

대표청구항 ▼

[ The embodiments of the invention in which an exclusive property or privilege is claimed are defined as follows:] [1.] A heat pump comprising:an indoor coil unit;an outdoor air coil unit;a plurality of refrigerant lines interconnecting said indoor coil unit and said outdoor coil unit, said pluralit

[ The embodiments of the invention in which an exclusive property or privilege is claimed are defined as follows:] [1.] A heat pump comprising:an indoor coil unit;an outdoor air coil unit;a plurality of refrigerant lines interconnecting said indoor coil unit and said outdoor coil unit, said plurality of refrigerant lines includes a liquid refrigerant line interconnecting said outdoor air coil unit with said indoor coil unit, said plurality of refrigerant lines includes a gas refrigerant line interconnecting said outdoor air coil unit with said indoor coil unit;a defrost subcircuit connected to said outdoor air coil unit in parallel with said indoor coil unit, said defrost subcircuit including a geothermal heat exchanger means for drawing heat from a geothermal heat source, said plurality of refrigerant lines further includes a first refrigerant line interconnecting said geothermal heat exchanger means with said liquid refrigerant line; anda circuit control means for selectively moving the heat pump between a heating mode in which refrigerant cycles between said indoor coil unit and said outdoor air coil unit and a defrost mode in which refrigerant cycles between said outdoor air coil unit and said geothermal heat exchanger means, whereby said geothermal heat exchanger means receives refrigerant from said liquid refrigerant line when the heat pump is operating in said defrost mode.