Patent ID: 9168810
Filing Date: 2015-10-27
Classification: B60H

Abstract:
1. A heating, ventilation, and air conditioning system configured to provide a perceived comfortable thermal environment, said system comprising: a first air moving device and a heat exchanger disposed in a front portion of a cabin of a vehicle, said first air moving device configured to pass a first airstream through said heat exchanger to provide the first air stream having a first temperature; a second air moving device enclosed within a mixing box disposed in a rear portion of the cabin of the vehicle and configured to mix the first airstream with a portion of cabin air to generate a second airstream characterized as having a second temperature, wherein the second airstream comprises a mixture of the first airstream and the portion of cabin air drawn from the rear portion of the cabin and wherein each and every heat exchanger in said system is disposed in the front portion of the cabin of the vehicle; a nozzle configured to direct the second airstream toward a location of an occupant in the rear portion of the cabin; wherein the system further comprises: a servo mechanism configured to move a control vane that is configured to control the flow rate of the first airstream; an occupant sensor configured to determine the presence of an occupant in the rear portion of the cabin; and, a controller in communication with the occupant sensor and the servo mechanism, wherein the controller is configured to command the servo mechanism to reduce the flow rate of the first airstream when the occupant sensor does not detect the presence of an occupant in the rear portion of the cabin.