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Vacuum freeze drying device

A technology of vacuum freeze-drying and freeze-drying chambers, which is applied in the direction of drying solid materials, drying solid materials without heating, drying, etc., which can solve the problems of high purchase and maintenance costs, high cost, and easy damage, and improve heat transfer efficiency , improve efficiency, and ensure the effect of freezing low temperature

Inactive Publication Date: 2015-08-19
HENAN UNIV OF SCI & TECH
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  • Abstract
  • Description
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Problems solved by technology

However, the cost of the existing vacuum freeze dryer is too high, it is easy to be damaged, and the cost of purchase and maintenance is high.

Method used

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  • Vacuum freeze drying device
  • Vacuum freeze drying device

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Embodiment Construction

[0019] As shown in the figure, a vacuum freeze-drying device includes a freeze-drying bin 1, a water-catching bin 8 and refrigeration equipment arranged outside the water-catching bin 8, and the freeze-drying bin 1 passes through a connection hole provided on the side wall of the water-catching bin 8 14 communicates with the water catcher 8 and makes the joint seal. The refrigeration equipment includes an electric cooling plate 11, a water cooling plate 12 and an insulation layer 13. The cooling surface of the electric cold plate 11 is close to the outside of the water catcher 8. The outer side of the electric cold plate 11 is a heating surface, and the heating surface is fitted with the water cooling plate 12. The outer layer of the water cooling plate 12 is provided with an insulation layer 13 around the water catcher 8. The water catcher 8 is connected to the electric The gaps between the cold plates 11, between the electric cold plates 11 and the water-cooled plates 12, and...

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Abstract

The invention discloses a vacuum freeze drying device which comprises a freeze-drying bin, a water catching bin and a refrigerating device arranged outside the water catching bin. The freeze-drying bin is communicated with the water catching bin through a connecting hole formed in the side wall of the water catching bin, and the joint is sealed. The refrigerating device comprises an electric cooling plate, a water cooling plate and a heat insulation layer. The vacuum freeze drying device has the advantages that a semiconductor electric cooling piece and a water cooling piece are combined for creating the low-temperature conditions of the water catching bin, the temperature difference of the two sides of the electric cooling piece can reach 60-70 DEG C, in addition, due to the use of circulating cooling water, the temperature of the water catching bin can be reduced to be lower than minus 40 DEG C, the requirement for freezing drying of most materials can be met, and the vacuum freeze drying device is convenient to use, practical and capable of saving cost and improving efficiency.

Description

technical field [0001] The invention relates to the field of vacuum freezing, in particular to a vacuum freeze drying device. Background technique [0002] Vacuum freeze-drying devices are widely used in laboratories. However, the cost of the existing vacuum freeze dryer is too high, it is easily damaged, and the cost of purchase and maintenance is high. [0003] Vacuum freeze-drying is to freeze the wet material or solution into a solid state at a lower temperature (-10 ° C ~ -50 ° C), and then sublimate the water in it directly into a gaseous state without liquid state under vacuum (1.3 ~ 13 Pa). A drying technique that ultimately dehydrates the material. The core of this technology has two points, one is whether the airtight vacuum can reach the sublimation condition of water, and the other is whether it can reach the low temperature condition of the common freezing point of materials. Contents of the invention [0004] The technical problem to be solved by the prese...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F26B5/06
Inventor 朱文学罗磊马丽苹焦昆鹏樊金铃张敏和大奎翟芳芳熊瑞刘二伟于斌
Owner HENAN UNIV OF SCI & TECH
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