Method for operating a vehicular refrigeration system having a refrigeration circuit with a heat pump function

US11820198B2 · kind B2 · utility

Assignee

• AUDI AG · DE

Inventors

• Dirk Schroeder · Eckental, DE
• Christian Rebinger · Munich, DE
• Helmut ROTTENKOLBER · Mindelstetten, DE

Key dates

• Filing date: Aug 2, 2019
• Grant date: Nov 21, 2023
• Expiry date: Jul 17, 2040

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F25B2700/21175
• WIPO field: Transport
• WIPO sector: Mechanical engineering

Abstract

A method for operating a refrigeration system for a vehicle, the refrigeration system including a refrigerant circuit with a heat pump function. The refrigerant circuit has an exterior heat exchanger, which is operated as a condenser or gas cooler to perform a refrigeration system mode or which is operated as a heat pump evaporator to carry out a heat pump mode. The refrigerant circuit further has an interior heating condenser or heating gas cooler for carrying out a heating mode. The interior heating condenser or heating gas cooler is fluidically connected downstream of the exterior heat exchanger with a reheating expansion device therebetween to carry out a reheating mode. The opening cross-section of the reheating expansion device is controlled in accordance with a refrigeration system parameter indicating the required reheating power.