US 11,654,742 B2
Unique airflow delivery path for independent rear zone in tri or quad HVAC system
Wayne Schnaidt, Novi, MI (US); Jayanthi R. Iyer, Northville, MI (US); Eric Haupt, Livonia, MI (US); and Dennis Vermette, Westland, MI (US)
Assigned to HANON SYSTEMS, Daejeon (KR)
Filed by Hanon Systems, Daejeon (KR)
Filed on Jun. 30, 2020, as Appl. No. 16/916,261.
Claims priority of provisional application 62/870,883, filed on Jul. 5, 2019.
Prior Publication US 2021/0001682 A1, Jan. 7, 2021
Int. Cl. B60H 1/00 (2006.01)
CPC B60H 1/00064 (2013.01) [B60H 1/00207 (2013.01); B60H 1/00514 (2013.01); B60H 1/00564 (2013.01); B60H 1/00871 (2013.01); B60H 2001/002 (2013.01); B60H 2001/00092 (2013.01); B60H 2001/00242 (2013.01)] 17 Claims
OG exemplary drawing
 
1. An air-handling system for a vehicle comprising:
an evaporator core disposed in an air-handling casing configured to receive a flow of air therethrough;
a heater core disposed in the air-handling casing at a position downstream of the evaporator core with respect to the flow of the air;
a primary flow path formed within the air-handling casing leading to a primary zone of a passenger compartment of the vehicle, the primary flow path divided into a primary cool air pathway receiving air bypassing the heater core and a primary warm air pathway receiving air passing through the heater core; and
a secondary flow path formed within the air-handling casing leading to a secondary zone of the passenger compartment, the secondary flow path including a secondary cool air pathway branching from the primary flow path downstream of the evaporator core and a secondary warm air pathway branching from the primary flow path downstream of the heater core, the secondary cool air pathway receiving air bypassing the heater core and the secondary warm air pathway receiving air passing through the heater core, wherein the air-handling casing is formed by cooperation of a primary zone housing and a secondary zone housing, a part of which is accommodated in the primary zone housing, and the secondary zone housing includes a secondary cool air conduit forming the secondary cool air pathway, a secondary warm air conduit forming the secondary warm air pathway and a secondary mixing chamber.