A UNITARY HEAT PUMP AIR CONDITIONER HAVING A COMPRESSED VAPOR DIVERSION LOOP

Disclosed is a unitary heat pump air conditioner (HPAC) system (10) having a refrigerant diversion loop (49) configured to supply sufficient heat to defrost an external heat exchanger (44) while not materially affecting the supply of heat to the passenger compartment of a vehicle. The HPAC system (1...

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Bibliographische Detailangaben
Hauptverfasser:	ODDI, Frederick V, KOWSKY, Carrie M, KADLE, Prasad S, LEITZEL, Lindsey L
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	ARRANGEMENTS OR ADAPTATIONS OF HEATING, COOLING, VENTILATING,OR OTHER AIR-TREATING DEVICES SPECIALLY FOR PASSENGER OR GOODSSPACES OF VEHICLES BLASTING COLD ROOMS COMBINED HEATING AND REFRIGERATION SYSTEMS COOLING OR FREEZING APPARATUS NOT COVERED BY ANY OTHERSUBCLASS DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OFGENERAL APPLICATION HEAT EXCHANGE IN GENERAL HEAT PUMP SYSTEMS HEATING ICE-BOXES LIGHTING LIQUEFACTION SOLIDIFICATION OF GASES MANUFACTURE OR STORAGE OF ICE MECHANICAL ENGINEERING PERFORMING OPERATIONS REFRIGERATION MACHINES, PLANTS OR SYSTEMS REFRIGERATION OR COOLING REFRIGERATORS TRANSPORTING VEHICLES IN GENERAL WEAPONS
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Beschreibung
Zusammenfassung:	Disclosed is a unitary heat pump air conditioner (HPAC) system (10) having a refrigerant diversion loop (49) configured to supply sufficient heat to defrost an external heat exchanger (44) while not materially affecting the supply of heat to the passenger compartment of a vehicle. The HPAC system (10) includes a refrigerant loop (12) configured to pump heat from a cold coolant loop (14) that scavenges heat from the external heat exchanger (44) to a hot coolant loop (16) that supplies heat to the passenger compartment. The refrigerant loop (12) includes a condenser (18) in thermal communication with the hot coolant loop (16), evaporator (22) in thermal communication with the cold coolant loop (14), and a compressor (24) to cycle the refrigerant through the refrigerant loop (12). The refrigerant loop (12) further includes means to selectively divert at least a portion of the hot compressed refrigerant exiting the compressor (24) directly to the evaporator (22) to heat the cold coolant loop (14) sufficient to defrost the external heat exchanger (44).