公开(公告)号：US09744829B2

公开(公告)日：2017-08-29

申请号：US14493986

申请日：2014-09-23

Applicant: DELPHI TECHNOLOGIES, INC.

Inventor： Mingyu Wang ,  Debashis Ghosh ,  Edward Wolfe, IV ,  Sourav Chowdhury ,  Timothy D. Craig

IPC: B60H1/00 ,  B60H1/24

CPC classification number: B60H1/00778 ,  B60H1/00028 ,  B60H1/00821 ,  B60H1/248 ,  B60H2001/00178

Abstract: A heating, ventilation, and air-conditioning (HVAC) system includes a blower, a fresh-air valve, a bypass duct, and a bypass valve. The blower is configured to urge air to flow from an inlet to an outlet of the blower. The fresh-air valve is operable to provide a mixture of air drawn from an outside-air duct and a recirculated-air duct to the inlet. The fresh-air valve is operable to a recirculate position where the outside-air duct is substantially blocked from communicating with the inlet. The bypass duct is configured to couple the outlet to the outside-air duct. The bypass valve is located in the bypass duct and is operable to a closed position and an open position. The cabin is ventilated when the fresh-air valve is in the recirculate position, the bypass valve is in the open position, and the blower is operated to blow air out of the outside-air duct.