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A boosted source heat pump (BSHP) is presented having a primary compressor, a booster compressor, an economizer, and a lubricant management system. At least the primary compressor is a twin-single compressor. The lubricant management system includes traps to prevent migration of lubricant to a non-o

A boosted source heat pump (BSHP) is presented having a primary compressor, a booster compressor, an economizer, and a lubricant management system. At least the primary compressor is a twin-single compressor. The lubricant management system includes traps to prevent migration of lubricant to a non-operating compressor, and aspiration tubes from the sump to the low pressure intake zone to each compressor.

대표청구항 ▼

[ What is claimed is:] [16.]16. A compression module for a heat pump system, said module including:a primary compressor;a booster compressor;at least said primary compressor being a multi-cylinder unloadable compressor;a sensor for sensing the temperature of outdoor ambient air;a thermostat for sens

[ What is claimed is:] [16.]16. A compression module for a heat pump system, said module including:a primary compressor;a booster compressor;at least said primary compressor being a multi-cylinder unloadable compressor;a sensor for sensing the temperature of outdoor ambient air;a thermostat for sensing the temperature of a volume of air to be heated; anda controller, said controller being responsive to signals from said sensor commensurate with the temperature of outdoor ambient air, and to signals from said thermostat commensurate with the temperature of the air to be heated to operate said primary compressor and said booster compressor in a predetermined heating operating sequence including the following:(a) allow partial capacity operation of said multi-cylinder primary compressor when the outdoor ambient temperature is in the range of about 50.degree.-75.degree. F.;(b) allow full capacity operation of said multi-cylinder primary compressor when the outdoor ambient temperature is in the range of about 43.degree. F.-50.degree. F.;(c) allow full capacity operation of said booster compressor and partial capacity operation of said multi-cylinder primary compressor when the outdoor ambient temperature is in the range of about 33.degree. F.-43.degree. F.;(d) allow full capacity operation of said booster compressor, and full capacity operation of said multi-cylinder primary compressor when the outdoor ambient temperature is in the range of about 15.degree. F.-30.degree. F.;(e) allow operation of back-up resistance heating when the outdoor ambient temperature is about 15.degree. F. or lower.