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Microwave vacuum freeze-drying device

A microwave vacuum and vacuuming device technology, applied in the field of microwave applications, can solve the problems of continuous batch processing, insufficient heating and drying uniformity of frozen materials, etc., and achieve the effects of good shape retention, less component loss, and uniform drying of materials

Active Publication Date: 2021-12-07
SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a microwave vacuum freeze-drying device for the above shortcomings, and to solve the problems of insufficient uniformity and inability to continuously batch process the existing microwave vacuum freeze-drying device for heating and drying frozen materials.

Method used

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  • Microwave vacuum freeze-drying device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] See attached figure 1 or 6. The microwave vacuum freeze-drying device includes a drying chamber 1, a front transition chamber 2, a rear transition chamber 3, a microwave input device 4, a material conveying device, a material storage device, a water and air channel 5, a cold trap 6 and a vacuuming device 7; The drying chamber 1 communicates with the cold trap 6 through the water-air channel 5; the cold trap 6 is connected with a vacuum device 7 through a pipeline; the drying chamber 1 is provided with a drying inlet 8 and a drying outlet 9; the drying chamber 1 The drying inlet 8 communicates with the front transition chamber 2, and the drying chamber 1 communicates with the rear transition chamber 3 through the drying outlet 9; the drying inlet 8 is provided with a first electric control door 10 that controls the opening and closing of the drying inlet 8; the drying The outlet 9 is provided with a second electric control door 11 that controls the opening and closing o...

Embodiment 2

[0030] See attached Figure 1~4 . On the basis of Embodiment 1, the third door 13 and the fourth door 37 are both electrically controlled doors; the pipeline connecting the front transition chamber 2 to the vacuum device 7 is provided with a first control valve 38; A second control valve 39 is provided on the pipeline connecting the transition chamber 3 to the vacuum device 7; a first conveying device 40 is provided in the front transition chamber 2; the first conveying device 40 is used to transfer the material storage device from the material inlet 12 is transported to the drying inlet 8; the rear transition chamber 3 is provided with a second conveying device 41; the second conveying device 41 is used to transport the material storage device from the drying outlet 9 to the material outlet 14. It can be seen from the above structure that the third door 13 and the fourth door 37 are all electric control doors, which can be automatically controlled by the controller; the firs...

Embodiment 3

[0036] See attached Figure 2-6 . On the basis of Embodiment 1, the third door 13 and the fourth door 37 are both electrically controlled doors; the pipeline connecting the front transition chamber 2 to the vacuum device 7 is provided with a first control valve 38; A second control valve 39 is provided on the pipeline connecting the transition chamber 3 to the vacuum device 7; a first conveying device 40 is provided in the front transition chamber 2; the first conveying device 40 is used to transfer the material storage device from the material inlet 12 is transported to the drying inlet 8; the rear transition chamber 3 is provided with a second conveying device 41; the second conveying device 41 is used to transport the material storage device from the drying outlet 9 to the material outlet 14. It can be seen from the above structure that the third door 13 and the fourth door 37 are all electric control doors, which can be automatically controlled by the controller; the firs...

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Abstract

The invention discloses a microwave vacuum freeze-drying device, and belongs to the technical field of microwave application. A drying bin communicates with a cold trap through a water vapor channel; the cold trap is connected with a vacuumizing device through a pipeline; the drying bin communicates with a front transition bin through a drying inlet, and communicates with a rear transition bin through a drying outlet; a first electric control door for controlling opening and closing of the drying inlet is arranged on the drying inlet; a second electric control door for controlling opening and closing of the drying outlet is arranged on the drying outlet; a material conveying device is arranged in the drying bin; a material inlet is formed in the front transition bin; a third door is arranged on the material inlet; a material outlet is formed in the rear transition bin; a fourth door is arranged on the material outlet; and the front transition bin and the rear transition bin are separately connected with the vacuumizing device through pipelines. The microwave vacuum freeze-drying device can sublimate moisture in a to-be-dried material in a frozen state to realize quick drying of the material, the material is uniformly dried, the component loss is less, the shape is well kept, and continuous batch treatment can be realized.

Description

technical field [0001] The invention belongs to the field of microwave application technology, in particular to a microwave vacuum freeze-drying device. Background technique [0002] Vacuum freeze-drying is a process in which most of the water in the material is frozen into ice by freezing, and then a low-temperature heat source is provided, and the ice is directly sublimated into water vapor in a vacuum state to dehydrate and dry the material. Existing vacuum freeze-drying devices generally use hot air circulation, steam heating, electric heating, etc. to heat and dry materials. However, this type of heating and drying method starts drying from the surface of the material, and then gradually dries inward, so the surface of the material is easy to dry. Burnt and uneven drying. [0003] In the prior art, microwaves are also used to dry frozen materials. Microwave vacuum freeze-drying is a new technology with great application value that combines high-efficiency microwave ra...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F26B5/06F26B3/347F26B9/06F26B23/08F26B25/00
CPCF26B5/06F26B5/048F26B3/347F26B9/06F26B23/04F26B25/00Y02P60/85
Inventor 朱铧丞杨阳
Owner SICHUAN UNIV
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