Vehicle air conditioning and heating system

• Main Author: MCKINNEY; DAVID A
• Format: Patent
• Language: English
• Published: 18.06.1985
• Edition: 3
• Subjects: ARRANGEMENTS OR ADAPTATIONS OF HEATING, COOLING, VENTILATING,OR OTHER AIR-TREATING DEVICES SPECIALLY FOR PASSENGER OR GOODSSPACES OF VEHICLES; BLASTING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; HEATING; LIGHTING; LIQUEFACTION SOLIDIFICATION OF GASES; MANUFACTURE OR STORAGE OF ICE; MECHANICAL ENGINEERING; PERFORMING OPERATIONS; REFRIGERATION MACHINES, PLANTS OR SYSTEMS; REFRIGERATION OR COOLING; TRANSPORTING; VEHICLES IN GENERAL; WEAPONS

A combined automotive vehicle heating and cooling system utilizes the existing heating coil and blower inside of the passenger compartment and utilizes the engine coolant circulated by the existing engine driven coolant pump in both the heating and air conditioning modes. An absorption refrigeration system external to the passenger compartment utilizes waste heat from the engine coolant normally dissipated by the engine coolant system radiator. The same coolant pump circulates hot engine coolant through a generator of the absorption refrigeration system to provide energy for the refrigeration cycle without the necessity for a compressor and associated devices. Engine loading by the refrigeration system is substantially eliminated. The refrigeration system operates adequately to provide air conditioning even at slow engine idling. In a separate circuit, a low energy pump circulates coolant through a refrigerant evaporator and then through the existing coil in the passenger compartment adjacent to the existing blower.