R744 based heat pump system with a water cooled gas cooler for cooling, heating and dehumidification of an EV/HEV

US10040334B2 · kind B2 · utility

Assignee

• Hanon Systems · KR

Inventors

• Marc Graaf · Krefeld, DE
• Navid Durrani · Kerpen, DE
• Roberto Della Rovere · Kerpen, DE

Key dates

• Filing date: Sep 17, 2015
• Grant date: Aug 7, 2018
• Expiry date: Jul 13, 2036

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B60H2001/3289
• WIPO field: Transport
• WIPO sector: Mechanical engineering

Abstract

The invention relates to an air conditioning system for a motor vehicle, with at least two coolant circuits as well as a refrigerant circuit. The refrigerant circuit comprises a compressor for the compression of the refrigerant, a heat exchanger for the cooling and liquefying of the compressed refrigerant, an expansion device, and a heat exchanger for the evaporation of the two-phase refrigerant. The heat exchangers are designed as coolant-refrigerant heat exchangers in each case for the heat transfer between the refrigerant circuit and at least one of the coolant circuits. The refrigerant circuit is moreover constructed with a heat exchanger for the heat exchange between the refrigerant and an air mass flow to be supplied to the passenger compartment of the motor vehicle as well as with an element, arranged downstream of the heat exchanger in the flow direction of the refrigerant, for changing the throughflow cross section.