Combined refrigeration system and heat pump and method for operating the system with function-dependent refrigerant transfer within the refrigerant circuit

摘要

Combined refrigeration system and heat pump, comprising a primary line with a compressor (1), a heat exchanger (2) as a refrigeration system condenser or heat pump evaporator, a refrigerant collector (9), an internal heat exchanger (5) with a high pressure passage and a low pressure passage for the refrigerant, an expansion device ( 3) and an evaporator (4) and having a secondary line with a heating condenser (11) with an expansion element (12), characterized in that a shut-off bypass (23) for flowing through the high pressure passage of the inner heat exchanger (5) between the high pressure outlet of the inner one Heat exchanger (5) and the heat exchanger (2) is arranged and that a further bypass (26) for refrigerant suction from the secondary line with a shut-off device (27) is arranged between the suction side of the refrigerant compressor (1) and the secondary line with the heating condenser (11) .