Air handling controller for HVAC system for electric vehicles

Details Air handling controller for HVAC system for electric vehicles Air handling controller for HVAC system for electric vehicles

1999-10-29

2000-07-25

Tanner, Harry B.

Refrigeration

Automatic control

Responsive to vehicle body motion or traction

454 75, 454229, B60H 100

Patent

active

060923768

ABSTRACT:
An air-flow management system for controlling the supply air to a motor vehicle passenger compartment is disclosed. The air-flow management system includes a reversible heat pump system for transferring heat energy between an outside environment and a refrigerant. Air from the outside environment, fresh air, and from the passenger compartment, recirculated air, is forced through the air-flow structure by a blower resulting in the transfer of heat energy between the refrigerant and the passenger compartment. A recirculation door provides a means for controlling the mixture of fresh air to recirculated air that flows through the air-flow structure. The position of the recirculation door is selectable by a controller to prevent fogging during the transition from cooling mode to heating mode, minimize the energy expended conditioning the passenger compartment air, and prevent the backflow of unconditioned outside air from the fresh air duct into the recirculation duct.

REFERENCES:
patent: 3861282 (1975-01-01), Scherenberg et al.
patent: 5009148 (1991-04-01), Karg et al.
patent: 5946923 (1999-09-01), Samukawa et al.
patent: 5971844 (1999-10-01), Samukawa et al.

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