US 12,365,217 B2
HVAC dual inlet design for partial recirculation operation
Eric K. Haupt, Livonia, MI (US); Mark Douglas Conley, Canton, MI (US); Martin Coleman, Milan, MI (US); Dennis Vermette, Westland, MI (US); and Shane Harte, Novi, MI (US)
Assigned to HANON SYSTEMS, Daejeon (KR)
Filed by Hanon Systems, Daejeon (KR)
Filed on Jun. 7, 2022, as Appl. No. 17/805,816.
Claims priority of provisional application 63/269,020, filed on Mar. 8, 2022.
Prior Publication US 2023/0286352 A1, Sep. 14, 2023
Int. Cl. B60H 1/00 (2006.01)
CPC B60H 1/00671 (2013.01) [B60H 1/00564 (2013.01)] 17 Claims
OG exemplary drawing
 
1. An air handling system of a vehicle, comprising:
a housing defining an inlet section, the inlet section including a first inlet portion and a second inlet portion, wherein the first inlet portion includes a first recirculation inlet configured to receive recirculated air originating from a passenger compartment of the vehicle and a first ambient air inlet configured to receive ambient air originating from an ambient environment, and wherein the second inlet portion includes a second recirculation inlet configured to receive recirculated air originating from the passenger compartment of the vehicle and a second ambient air inlet configured to receive the ambient air originating from the ambient environment;
a first air distribution door disposed in the inlet section and configured to selectively control a distribution of the recirculated air and the ambient air entering the first inlet portion through the first recirculation inlet and the first ambient air inlet;
a second air distribution door disposed in the inlet section and configured to selectively control a distribution of the recirculated air and the ambient air entering the second inlet portion through the second recirculation inlet and the second ambient air inlet;
a first baffle door disposed in the inlet section and configured to selectively control a flow of the recirculated air and the ambient air entering the first inlet portion through the first recirculation inlet and the first ambient air inlet; and
a second baffle door disposed in the inlet section and configured to selectively control a flow of the recirculated air and the ambient air entering the second inlet portion through the second recirculation inlet and second ambient air inlet, wherein the housing further defines a first blower flow path disposed downstream of the first air distribution door and the first baffle door with respect to the flow of the recirculated air and the flow of the ambient air, wherein the first blower flow path leads to a blower assembly of the air handling system, wherein the housing further defines a second blower flow path disposed downstream of the second air distribution door and the second baffle door with respect to the flow of the recirculated air and the flow of the ambient air, wherein the second blower flow path leads to the blower assembly of the air handling system, and wherein the housing includes one or more openings formed therein to fluidly connect the first blower flow path and the second blower flow path to permit the flow of air from the first inlet portion to mix with the air from the second inlet portion prior to flowing into the blower assembly.