Full-automatic intelligent vacuum freeze dryer

Abstract

The invention relates to a full-automatic intelligent vacuum freeze dryer, comprising a compressor, an oil cooler, a pneumatically or electrically operated valve, a vacuum pump as well as a pump head valve which prevents oil pollution, a filter, a freeze-drying box, a condenser, a butterfly valve or a mushroom valve with position feedback connected by the freeze-drying box and a cold trap, a temperature probe of products in the freeze-drying box and sterilization coldest point, a shelf assembly heat and cold and heating medium indirect heat exchange system, a relay for judging the temperature and pressure of the heat exchange system and a hydraulic station with the pressure relay; the invention is characterized in that an automatic control intelligent element is selected to automatically judge the condition whether to continue running, judgement is carried out, an alarm is given by running continuously or through a sound control alarm device and process routing and data are recorded, power-off protection and memory functions are provided, the vacuum freeze drying device can continue running according to the forepart process after power is re-supplied. The invention has the advantages of ensuring the rapidity and efficiency of the cold trap coil defrosting; saving the manufacturing cost of the box body and the usage of water with the same cleaning effect; freely setting the steam sterilizing F0 value according to actual condition; and achieving the aim of fast cooling.

Description

Technical field [0001] The invention relates to a fully automatic intelligent vacuum freeze dryer, which is used to pre-freeze freeze-dried water-containing substances or solutions at low temperatures, and then dehydrate the substances in a vacuum environment to obtain dried products, belonging to the technology of vacuum freeze dryers field. Background technique [0002] Vacuum freeze-drying (freeze dryer for short) is to freeze the freeze-dried water-containing substance or solution at a low temperature in advance, and then dehydrate the substance in a vacuum environment to obtain a dried product. Compared with the usual drying, drying, boiling, spray drying and vacuum drying, this drying method has many outstanding advantages: first, it does not denature proteins, microorganisms, etc. or lose biological vitality; second, the substance is The loss of volatile components and heat-denatured nutrients is small; third, the growth of microorganisms and the action of enzymes can hard...

AI Technical Summary

Problems solved by technology

The traditional method of verifying the gas filter is to remove the gas filter element for verification after a batch of medicine is prepared, and then perform steam sterilization after verification and installation. This has a very big risk, because the gas filter element cannot Under too much pressure difference, the steam pressure may reach 0.3Mpa during steam sterilization. If the filter element is damaged during steam sterilization, this may lead to the scrapping of this batch of medicines, and the loss will be great.

[0010] Manual leak rate test has human calculation errors; it cannot automatically provide an alarm for unqualified items in the leak rate

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