US 12,485,721 B2
Heat pump system for a vehicle
Tae Hee Kim, Ansan-si (KR); Yong Woong Cha, Yongin-si (KR); Wan Je Cho, Hwaseong-si (KR); Seong-Bin Jeong, Seongnam-si (KR); Hyunsub Lee, Hwaseong-si (KR); Hyunjae Lee, Yongin-si (KR); Minseob Shin, Daejeon (KR); Doyoung Kim, Seoul (KR); Chunkyu Kwon, Hwaseong-si (KR); and Jae-Eun Jeong, Hwaseong-si (KR)
Assigned to HYUNDAI MOTOR COMPANY, Seoul (KR); and KIA CORPORATION, Seoul (KR)
Filed by HYUNDAI MOTOR COMPANY, Seoul (KR); and KIA CORPORATION, Seoul (KR)
Filed on Mar. 25, 2024, as Appl. No. 18/615,973.
Claims priority of application No. 10-2023-0142742 (KR), filed on Oct. 24, 2023.
Prior Publication US 2025/0128569 A1, Apr. 24, 2025
Int. Cl. B60H 1/00 (2006.01); B60H 1/32 (2006.01)
CPC B60H 1/00278 (2013.01) [B60H 1/00485 (2013.01); B60H 1/00914 (2013.01); B60H 1/00921 (2013.01); B60H 1/32284 (2019.05); B60H 1/0005 (2013.01); B60H 2001/00307 (2013.01); B60H 2001/00949 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A heat pump system for a vehicle, comprising:
a compressor configured to compress a refrigerant circulating the heat pump system;
a heat, ventilation, and air condition (HVAC) module including an internal condenser, an evaporator connected to the compressor via a refrigerant line, and an opening/closing door configured to adjust air having passed through the evaporator to be selectively introduced into the internal condenser based on a cooling mode or a heating mode of the vehicle;
a heat-exchanger connected to the internal condenser via the refrigerant line;
a first expansion valve provided in the refrigerant line between the heat-exchanger and the evaporator;
a first connection line including: a first end connected to the refrigerant line between the heat-exchanger and the first expansion valve, and a second end connected to the refrigerant line between the evaporator and the compressor;
a chiller provided in the first connection line, and configured to adjust a temperature of a coolant by exchanging heat between the refrigerant introduced into the first connection line with a selectively introduced coolant;
a second expansion valve provided in the first connection line upstream of the chiller;
a second connection line including: a first end connected to the refrigerant line between the compressor and the internal condenser, and a second end connected to a third expansion valve;
a third connection line including: a first end connected to the third expansion valve, and a second end connected to the refrigerant line between the chiller the compressor; and
a fourth connection line including: a first end connected to the third expansion valve, and a second end connected to the refrigerant line between the heat-exchanger and the first expansion valve.