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Vacuum freeze-drying device and vacuum freeze-drying method

A freeze-drying and vacuum technology, applied in the direction of drying granular materials, drying solid materials, heating to dry solid materials, etc., can solve the problems of low heat conduction and spend a lot of time, and achieve the effect of reducing costs

Active Publication Date: 2020-12-29
ULVAC INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in this method, sublimation drying may take a long time due to the low heat conduction between frozen powders in a vacuum environment.

Method used

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  • Vacuum freeze-drying device and vacuum freeze-drying method
  • Vacuum freeze-drying device and vacuum freeze-drying method
  • Vacuum freeze-drying device and vacuum freeze-drying method

Examples

Experimental program
Comparison scheme
Effect test

Deformed example 1

[0075] image 3 It is a schematic diagram which shows the modification 1 of the vacuum freeze-drying apparatus of this embodiment. exist image 3 The tube part 30B of the vacuum freeze-drying apparatus 101 of the modification 1 is shown in FIG. The structure of the vacuum freeze-drying apparatus 101 other than the tube portion 30B is the same as that of the vacuum freeze-drying apparatus 100 .

[0076] In the pipe portion 30B, at least one opening portion 320 is provided between the opening end 301 and the opening end 302 . The opening portion 320 is formed by inserting a second joint portion 322 provided in a part of the pipe portion 30B and having an inner diameter larger than the outer diameter of the pipe portion 30B into a first joint portion 321 , the second joint portion 321 The portion 322 is provided on a part of the pipe portion 30B and faces the first joint portion 321 . The first joint part 321 is provided downstream of the second joint part 322 .

[0077] The...

Deformed example 2

[0081] Figure 4 It is a schematic side view showing Modification 2 of the vacuum freeze-drying apparatus of this embodiment.

[0082] exist Figure 4 In the vacuum freeze-drying apparatus 102 shown, the heating unit 43 has a heating mechanism for heating the frozen particles 220 by heat radiation. For example, the heating unit 43 has an internal heater 431 and an external heater 432 . The pipe part 30A may be replaced with the pipe part 30B.

[0083] The internal heater 431 has a cylindrical shape, for example, and is disposed inside the pipe portion 30A. The central axis of the internal heater 431 coincides with the rotation axis 30r of the tube portion 30A. The internal heater 432 has a cylindrical shape, for example, and is arranged outside the pipe portion 30A. The central axis of the external heater 432 coincides with the rotation axis 30r of the tube portion 30A. The internal heater 431 and the external heater 432 are, for example, carbon heaters. In addition, in...

Deformed example 3

[0086] Figure 5 It is a schematic side view showing Modification 3 of the vacuum freeze-drying apparatus of this embodiment.

[0087] exist Figure 5 In the vacuum freeze-drying apparatus 103 shown, the heating unit 40 is composed of a plurality of units, and each of the plurality of units can independently heat the frozen particles 220 . For example, the heating unit 40 has an upper heating unit 40A and a lower heating unit 40B. In addition, the plurality of units is not limited to two, but may be three or more. In addition, the pipe part 30A may be replaced with the pipe part 30B.

[0088] The upper heating unit 40A has an upper inner electrode 411A, an upper outer electrode 412A, and an upper high-frequency power source 420A. The lower heating unit 40B has a lower inner electrode 411B, a lower outer electrode 412B, and a lower high-frequency power source 420B. The upper heating part 40A is separated from the lower heating part 40B in the Z-axis direction.

[0089] Th...

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Abstract

The invention realizes vacuum freeze-drying in a short time and reduces cost. The vacuum freeze-drying apparatus has a spray unit, a tube unit, a heating unit, and a collection unit. The spraying unit sprays the raw material liquid into the vacuum container. The tube portion is non-linear and has a first open end and a second open end, and frozen particles formed by self-freezing of droplets formed by spraying the raw material liquid into the vacuum container are captured by the first open end. The heating unit sublimates and dries the frozen particles by heating the frozen particles in the tube, and the frozen particles move from the first opening end toward the second opening end in the tube due to kinetic energy obtained during spraying. The collection part collects dry particles formed by sublimation and drying of the frozen particles in the tube part, and is released from the second open end of the tube part.

Description

technical field [0001] The invention relates to a vacuum freeze-drying device and a vacuum freeze-drying method. Background technique [0002] Most of the vacuum freeze-drying devices spray the raw material liquid into the vacuum container, the droplets formed in the vacuum container are frozen, the frozen powder is collected in the collection tray, and the frozen powder is sublimated and dried by conducting heat to the collection tray. . However, in this method, since the thermal conduction between frozen powders in a vacuum environment is low, it may take a lot of time for sublimation drying. [0003] On the other hand, vacuum freeze-drying which dries a large amount of frozen powders together in a short time is proposed (for example, refer patent document 1). [0004] prior art literature [0005] patent documents [0006] Patent Document 1: Japanese Patent Laid-Open No. 2014-119140 Contents of the invention [0007] The problem to be solved by the invention [00...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F26B5/06F26B3/28F26B3/347A23L3/44
CPCA23L3/44F26B3/347F26B5/065F26B17/16F26B2200/08A23L3/001A23V2002/00
Inventor 西桥勉中野美尚村上裕彦吉元刚伊藤薰树小宫卓巳
Owner ULVAC INC
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