Refrigerant circuit of an HVAC system of a motor vehicle

US9242527B2 · kind B2 · utility

Assignee

• Hanon Systems · KR

Inventors

• Marc Graaf · Krefeld, DE
• Florian Wieschollek · Hürth, DE
• Christian Rebinger · Munich, DE
• Dirk Schroeder · Eckental, DE

Key dates

• Filing date: Oct 7, 2011
• Grant date: Jan 26, 2016
• Expiry date: Oct 9, 2033

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F25B2400/16
• WIPO field: Thermal processes and apparatus
• WIPO sector: Mechanical engineering

Abstract

The invention relates to a refrigerant circuit and a process for operation of the refrigerant circuit of an HVAC system of a vehicle, particularly an electric or hybrid vehicle. The refrigerant circuit includes a primary circuit with a compressor, a heat exchanger for heat transmission between the refrigerant and the environment, a collector, a first expansion member, a heat exchanger for supply of heat from the fresh air to be conditioned of the vehicle interior to the refrigerant and a heat exchanger arranged switched in parallel to the heat exchanger. Further, the refrigerant circuit is provided with a secondary train that extends starting from a tapping point positioned between the compressor and the heat exchanger up to a connection point and is provided with a heat exchanger for heat transmission from the refrigerant to the fresh air to be conditioned for the vehicle interior, and a subsequent control valve.