Dual evaporator air conditioning system and method of use
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United States of America Patent
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Dec 2, 2003
Grant Date -
N/A
app pub date -
Nov 19, 2002
filing date -
Nov 19, 2002
priority date (Note) -
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Abstract
A dual evaporator air conditioning system and method for use therewith to cool air in front and rear portions of a cabin. The dual evaporator air conditioning system includes primary and auxiliary HVAC units to cool the air in the front and rear portions of the cabin, respectively. The dual evaporator air conditioning system also includes a control system having cooling and non-cooling modes for each of the HVAC units. The control system automatically diverts cooled air produced by the auxiliary HVAC unit into an air dumping chamber in response to the auxiliary HVAC unit being in the non-cooling mode while the primary HVAC unit is in the cooling mode. The air dumping chamber is partitioned from the cabin to prevent the cooled air generated by the auxiliary HVAC unit from entering the cabin. Maintaining airflow through an auxiliary evaporator prevents refrigerant and lubricant buildup in the auxiliary evaporator.
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