A household freeze dryer is a type of freeze drying equipment used for household or small commercial use. It uses the principle of freeze-drying to directly sublimate the moisture in food, medicine and other items from the solid state to the gaseous state, so as to achieve long-term preservation of the goods. This article will introduce the characteristics, working principle, precautions for use and development prospects of household freeze dryers.
1. Characteristics of household freeze dryers.
Household freeze dryers generally have the following characteristics:
Simple operation: The operation of the household freeze dryer is simple and easy to understand, and the user can easily master the use method.
High safety: The household freeze dryer does not generate high temperature or pressure during operation, so it is very safe to use.
Long storage time: Since the freeze-drying process can remove most of the water in the article, the food stored in the household freeze-dryer can maintain the original color, flavor, shape and nutrients for a long time.
Small footprint: The household freeze dryer is small in size and suitable for home use.
Second, the working principle of household freeze dryer.
The working principle of the household freeze dryer is to use refrigeration technology to cool the items to be frozen below the freezing point, so that the moisture is directly sublimated from the solid state to the gaseous state, so that the items are dehydrated and dried. Specifically, the workflow of a household type freeze dryer is as follows:
Pre-treatment: Properly dispose of the items to be lyophilized, such as washing, slicing, etc.
Freezing: Put the processed items into a freeze-drying box, and cool the items below freezing point through the action of refrigerant to form solid ice crystals.
Sublimation drying: In a vacuum environment, the water in the solid ice crystals will be directly sublimated from the solid state to the gaseous state, which will be collected and removed by the condenser.
Post-processing: After the sublimation and drying of the items are taken out for proper post-processing.
3. Precautions for the use of household freeze dryers.
There are a few things to keep in mind when using a household freeze dryer:
Ensure that the power supply is safe and reliable, and operate in strict accordance with the requirements of the manual.
Clean and maintain the machine regularly to keep it clean and hygienic.
Pay attention to the working status of the machine, and deal with the abnormality in time.
Before use, you should understand the characteristics of the lyophilized items to avoid damage to the machine or affect the lyophilization effect due to unsuitable items.
When storing items, they should be avoided to be too full or too heavy, so as not to affect the normal operation of the machine.
Fourth, the development prospect of household freeze dryers.
With the improvement of people's requirements for food preservation and the acceleration of the pace of life, the application prospect of household freeze dryers in the household and small commercial fields is becoming more and more broad. At the same time, with the continuous progress of technology and the continuous reduction of costs, the popularity of household freeze dryers will also be further improved. In the future, household freeze dryers will play a more important role in food, medicine, biological products and other fields.