Cooling system of a vehicle, comprising a coolant circuit which can be operated as a cooling circuit for an AC operation and as a heat pump circuit for a heating operation

US12296649B2 · kind B2 · utility

Assignee

• AUDI AG · DE

Inventors

• Dirk Schroeder · Eckental, DE
• Christian Rebinger · Munich, DE
• Thomas Anzenberger · Ingolstadt, DE

Key dates

• Filing date: Dec 11, 2023
• Grant date: May 13, 2025
• Expiry date: Jan 11, 2044

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F25B2400/054
• WIPO field: Transport
• WIPO sector: Mechanical engineering

Abstract

A cooling system of a vehicle, including a coolant circuit, which can be operated as a cooling circuit for an AC operation and as a heat pump circuit for a heating operation, an evaporator, a coolant compressor, a heat exchanger in the form of a coolant condenser or gas cooler for the coolant circuit or in the form of a heat pump evaporator for the heat pump circuit, a first expansion element which is paired with the evaporator, a second expansion element, the heat pump evaporator function of which is paired with the heat exchanger, and an inner heat exchanger with a high-pressure section and a low-pressure section. The low-pressure section is fluidically connected to the downstream coolant compressor. The high-pressure section of the inner heat exchanger is arranged in a coolant circuit section which connects the second expansion element to the heat exchanger.