公开(公告)号：US20250074161A1

公开(公告)日：2025-03-06

申请号：US18725162

申请日：2023-04-11

Applicant: Hanon Systems

Inventor： Dong Hoon OH ,  Young Min KIM ,  Dae Bok KEON

IPC: B60H1/34

Abstract: A vehicular air conditioning system having an air inlet and an air outlet includes a first heating heat exchanger configured to heat air introduced through the air inlet, a second heating heat exchanger configured to heat air passing through the first heating heat exchanger or bypassing the first heating heat exchanger, and a control part configured to control the first heating heat exchanger and the second heating heat exchanger according to a passenger room heating load so that when the heating load decreases to below a preset value in a heating mode in which the first heating heat exchanger and the second heating heat exchanger are operated simultaneously, the first heating heat exchanger is first turned off and only the second heating heat exchanger is operated.

公开(公告)号：US20190001788A1

公开(公告)日：2019-01-03

申请号：US16020209

申请日：2018-06-27

Applicant: HANON SYSTEMS

Inventor： Se Won MIN ,  Sang Jun YOO ,  Young Min KIM ,  Chul Soon KIM ,  Hong Rae JUNG ,  Chang Hyun BAEK ,  Dae Yeop JEONG

IPC: B60H1/22

Abstract: An air conditioner for a vehicle includes an air conditioning case having a first air passageway and a second air passageway partitioned by a separator therein; a PTC heater disposed in each of the first air passageway and the second air passageway to generate heat by electric energy; and a control unit for controlling operation of the PTC heater. The control unit individually controls discharge temperature of the first air passageway and discharge temperature of the second air passageway of the PTC heater, and if target discharge temperature of the first air passageway and target discharge temperature of the second air passageway are different from each other, the control unit calculates and outputs a compensation value for the PTC heater output of at least one of the first air passageway and the second air passageway. The PTC heater therefore has a reduced output when controlling for dual temperatures.