Condenser of vacuum freeze drier

Abstract

The invention relates to the field of freeze-drying equipment, in particular to a condenser of a vacuum freeze drier. The condenser of the vacuum freeze drier comprises a condenser body, a plurality of metal absorption plates and an absorption plate replacing mechanism. At least one of the metal absorption plates is in contact connection with the condenser body. The absorption plate replacing mechanism is connected with the metal absorption plates. The metal absorption plates are replaceable; thick ice layers can be absorbed on the metal absorption plates, so that a condensing effect can be guaranteed by means of replacing with other metal absorption plates when the condensing effect is poor. Bumps suitable for adhering of water vapor are formed on the metal absorption plates, so that water vapor condensing is facilitated better. By means of arranging scraping rods, water layers on the metal absorption plates can be scraped, so that the metal absorption plates are prepared to be replaced. When the metal absorption plate replacing mechanism moves to a corresponding limited point, movement is interrupted, and the interruption can shake off an appropriate amount of ice layers so as to facilitate subsequent scraping works.

Description

technical field [0001] The invention relates to the field of freeze-drying equipment, in particular to a condenser of a vacuum freeze-drying machine. Background technique [0002] The freeze-drying machine is composed of a freeze-drying box or a drying box, a condenser or a water vapor condenser, a freezer, a vacuum pump and valves, and electrical control components. The condenser is a vacuum-tight container with a large The surface area of ​​the metal adsorption plate surface, the temperature of the adsorption plate surface can drop below -40 ℃, and can maintain this low temperature constantly. The function of the condenser is to freeze and adsorb the water vapor sublimated from the product in the freeze-drying box on its metal surface superior. For the existing condenser, due to the attachment of a large amount of water vapor generated by the freeze-drying operation, there is a thick ice layer on the metal adsorption plate surface of the condenser, which in turn leads to ...

AI Technical Summary

Problems solved by technology

For the existing condenser, due to the attachment of a large amount of water vapor generated by the freeze-drying operation, there is a thick ice layer on the metal adsorption plate surface of the condenser, which in turn leads to poor condensation effect of the condenser and affects the long-term operation of the freeze-dryer homework effect

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