Freeze dryer and box thereof

Abstract

The invention discloses a box of a freeze dryer. The box of the freeze dryer comprises a box inner shell; a freeze drying bin is surrounded by the box inner shell; and the box inner shell is providedwith a pure steam input pipe communicating with the freeze drying bin. The box of the freeze dryer further comprises an auxiliary heating flow path and an auxiliary cooling flow path arranged on the outer side of the box inner shell and contacted with the box inner shell; and the auxiliary heating flow path and the auxiliary cooling flow path are independent two sets of flow paths. The box of thefreeze dryer can quickly increase the sterilization temperature during sterilizing; on the one hand, the consumption of saturated pure steam is reduced, so that the production cost is reduced; and onthe other hand, the heating time is effectively shortened, so that the sterilization efficiency is improved; and after sterilization, the proper temperature can be quickly lowered to, so that the idlewaiting time of the freeze dryer is greatly shortened, and the production efficiency and the equipment utilization rate are improved. The invention further discloses the freeze dryer adopting the box.

Description

technical field [0001] The invention relates to the technical field of freeze-drying, and more specifically relates to a freeze-drying machine and its box. Background technique [0002] Vacuum freeze dryer, also known as freeze dryer, is a device that dries moisture in products such as medicines, food, health care products, and cosmetics that need to be stored dry under low-temperature vacuum. [0003] The freeze dryer box includes the box inner shell and the reinforcement ribs, jackets and various nozzles and other accessories arranged on the outside of the box inner shell. The freeze-drying warehouse is a place used to freeze and dry products. Usually, the freeze-drying warehouse is a vacuum container. If it has the function of on-line autoclaving, the freeze-drying warehouse is also a pressure vessel. During the freeze-drying process In the process, the ice crystals in the product to be freeze-dried sublimate and remove the water in the product through the heating functi...

AI Technical Summary

Problems solved by technology

Sterilization is usually steam sterilization, and the required sterilization temperature is 121°C. At the beginning of sterilization, saturated pure steam needs to be introduced into the freeze-drying chamber until all areas in the freeze-drying chamber reach 121°C, and The sterilization can only be completed after 30 minutes of continuous maintenance. Since the current freeze-drying warehouse only relies on the introduction of saturated pure steam to achieve temperature rise, a large amount of pure steam needs to be consumed during the sterilization process; A batch of production work, but the freeze-drying warehouse needs to be cooled to an appropriate temperature before proceeding. Currently, the natural cooling method is used, which usually takes more than 10 hours. During this period of time, the equipment has been idle, causing production waste of equipment

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