US 12,319,128 B2
Vehicular heat management system
Jun Min Lee, Daejeon (KR); Chul Hee Kim, Daejeon (KR); and Seon Ung Youn, Daejeon (KR)
Assigned to HANON SYSTEMS, Daejeon (KR)
Appl. No. 17/781,856
Filed by Hanon Systems, Daejeon (KR)
PCT Filed Dec. 28, 2020, PCT No. PCT/KR2020/019180
§ 371(c)(1), (2) Date Jun. 2, 2022,
PCT Pub. No. WO2021/133134, PCT Pub. Date Jul. 1, 2021.
Claims priority of application No. 10-2019-0176458 (KR), filed on Dec. 27, 2019; and application No. 10-2020-0184195 (KR), filed on Dec. 28, 2020.
Prior Publication US 2023/0020602 A1, Jan. 19, 2023
Int. Cl. B60H 1/32 (2006.01); B60H 1/00 (2006.01)
CPC B60H 1/3213 (2013.01) [B60H 1/00007 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A vehicular heat management system, comprising:
a heat pump type refrigerant circulation line including a compressor, a high-pressure side indoor heat exchanger, a heat pump mode variable expansion valve, an outdoor heat exchanger, an air conditioner mode variable expansion valve, and a low-pressure side indoor heat exchanger;
a cooling water circulation line configured to circulate cooling water between a radiator and a specific cooling target;
a refrigerant-cooling water chiller configured to allow the refrigerant in the refrigerant circulation line transferred from the outdoor heat exchanger to the low-pressure side indoor heat exchanger to exchange heat with the cooling water in the cooling water circulation line circulated through the specific cooling target; and
a refrigerant-cooling water flow control part configured to, depending on an air conditioner mode state, control a flow of the refrigerant in the refrigerant circulation line and a flow of the cooling water in the cooling water circulation line with respect to the refrigerant-cooling water chiller,
wherein the refrigerant-cooling water flow control part is configured to, when the waste heat temperature of the specific cooling target is lower than a preset temperature in the passenger compartment heating mode, allow the refrigerant in the refrigerant circulation line discharged from the outdoor heat exchanger to be introduced into the compressor and allow the cooling water in the cooling water circulation line circulated through the specific cooling target to circulate toward the radiator.