Refrigeration system for freeze-drying assembly, has low temperature refrigeration loop serving as heat source for very low temperature refrigeration loop to refrigerate tank or trap such that loops are mounted in cascade

摘要

The system has a tank (100) containing product and a vapor condensation trap (110). A low temperature refrigeration loop (1) serves as a heat source for a very low temperature refrigeration loop (2) to refrigerate the tank or the trap such that the loops (1, 2) are mounted in cascade. The refrigeration loop (2) controls a cooling circuit that is thermally coupled to the tank. A heat transfer refrigeration loop (3) is connected to the refrigeration loops (1, 2), and is coupled to the tank through a diverted loop (4).