BULK FREEZE DRYING SYSTEM

原文（中文）

A freeze drying system having a nozzle operated at a setpoint pressure to generate fluid product drops for freezing in a freezing chamber of a freezing vessel. The freezing chamber includes an inner wall that defines a cavity and an outer wall having an inlet that extends from a location on the outer wall that is lower than an outlet. A cooling fluid flows through the inlet, cavity and outlet to form a freezing zone. A drying chamber having sloped shelves receives frozen particles from the freezing chamber. A heating element is associated with each shelf that heats the frozen particles to promote sublimation. Vibration elements located outside the drying chamber vibrate the shelves causing the frozen particles to move from shelf to shelf to form freeze dried product.