A dehumidification air-conditioning system and method for freeze-drying preservation of water-containing cultural relics

Abstract

The invention discloses a dehumidification air conditioning system for freeze-drying preservation of water containing artifacts and a method thereof. The dehumidification air conditioning system is provided with an artifact freezer and an equipment room separated from the artifact freezer through a partition wall, wherein an air guide space communicated with the artifact freezer is arranged above the artifact freezer, an air supply outlet for dehumidification and an air supply outlet for evaporation are respectively formed in the upper part of the partition wall, a return air grille outlet is formed in the lower part of the partition wall, a dehumidification air supply space and an equipment space are formed in the equipment room and are separated from each other through an upper partition wall, and an air outlet of dehumidification equipment is communicated with the dehumidification air supply space through the air supply outlet. After stored into the artifact freezer, artifacts enter into a freeze-drying stage and a freeze preservation stage in sequence; in the freeze-drying stage, a dehumidification drying mode and a defrosting drying mode are carried out in circulation till the preserved artifacts are totally dried; in the freeze preservation stage, a dehumidification preservation mode and a defrosting preservation mode are carried out in circulation. According to the invention, through adjustment on the temperature and humidity of supplied air and bypass ventilation quantity, cold air with low temperature and low humidity is used for blow-drying the water containing artifacts, thereby facilitating the long-term preservation of the artifacts.

Description

technical field [0001] The invention relates to an air-conditioning system for low-temperature freezing and dehumidification. In particular, it relates to a dehumidification air-conditioning system and method for freeze-drying preservation of cultural relics containing water. Background technique [0002] Cultural relics are a witness to the history of a country. The large-scale construction of our country in recent years has resulted in an increasing number of unearthed cultural relics to be protected. Unearthed cultural relics such as woodware, lacquerware, bambooware, etc. are generally rich in water, and must be dehydrated and dried before long-term preservation. The cultural relics used for display after drying should have slight or no shrinkage, no breakage, and no color change, which puts high demands on the drying process. At present, the drying methods that have been studied more include natural drying, hot air drying, continuous vacuum drying, and freeze drying. ...

AI Technical Summary

Problems solved by technology

At present, the drying methods that have been studied more include natural drying, hot air drying, continuous vacuum drying, and freeze drying. Due to their own limitations, hot air drying and vacuum drying can easily cause shrinkage and cracking of cultural relics. The drying method takes a long time from immersion to complete drying

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