Refrigeration – Automatic control – Responsive to vehicle body motion or traction
Patent
1992-12-31
1993-11-30
Wayner, William E.
Refrigeration
Automatic control
Responsive to vehicle body motion or traction
62236, B60H 132
Patent
active
052654354
ABSTRACT:
A vehicle refrigeration system (100) is provided for cooling an enclosed space within a trailer (14). The vehicle refrigeration system (100) includes a compressor unit (138) operatively coupled to a condenser (142) and an evaporator (144). The compressor unit (138) includes an electric compressor motor (140) coupled to a power controller (130) for coupling motor (140) to either a primary or a secondary source of power, and cycling the compressor motor on and off responsive to a signal from a temperature sensor (22). A primary power source unit (110) includes air driven turbine generator unit (112) affixed to the tractor (12) for generating electrical power responsive to relative displacement of the vehicle (10) with respect to the ambient air (16). Air driven turbine generator unit (112) is defined by at least one air turbine (114) rotatively coupled to at least one generator (116), the generator's output being coupled to power controller (130) for energizing the compressor motor ( 140). When the output from air driven turbine generator unit (112) is below a predetermined value, the compressor motor is powered from a secondary power source unit (120) coupled to power controller (130). Secondary power source unit (120) includes storage batteries (122) and a battery charge controller (124) for maintaining the charge level of batteries (122). Battery charge controller (124) utilizes power from the air turbine generator unit (112) for charging, when the compressor motor (140) is cycled off, or alternately from the vehicle's engine mounted generator (24).
REFERENCES:
patent: 2453923 (1948-11-01), Mayo
patent: 3283525 (1966-11-01), Fricke et al.
patent: 4015962 (1977-04-01), Tompkins
patent: 5086625 (1992-02-01), Momose et al.
Klein David I.
Morefield Phyllis M.
Rosenberg Morton J.
Wayner William E.
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