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Heat pump-microwave combined drying device

A combined drying and microwave technology, used in lighting and heating equipment, heating to dry solid materials, drying solid materials, etc., to achieve the effect of simple and convenient use, maintenance and repair, simple form and reasonable structure

Active Publication Date: 2014-07-02
CHINESE ACAD OF AGRI MECHANIZATION SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] It can be seen that there is no heat pump-microwave combined drying drying method with reasonable structure, fast drying rate, uniform drying, large processing capacity, no microbial pollution, good quality of dried products, low production cost, and low energy consumption in the prior art. equipment

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0098] Embodiment 1: heat pump drying

[0099] First, the start temperature, stop temperature and fan frequency are respectively set on the control system 3 through the touch screen 35. When the temperature of the dry material is higher than the set stop temperature, the compressor 11 stops automatically. When the material temperature is lower than the set start temperature, the heat pump starts automatically. So cycle. Then open the left and right air ducts 131, 132 and the circulation fan 133. After the circulation fan 133 is running, the heat pump is turned on, and the compressor 11 runs after 3 minutes. The air in the left and right air passages 131, 132 flows through the evaporator 141 and the condenser 121 in sequence under the action of the circulating fan 133; the refrigerant flows through the compressor 11, the condenser 121, the throttle valve 6 and the evaporator in sequence 14. When the humid air coming out of the drying chamber 4 flows through the evaporator 1...

Embodiment approach 2

[0100] Embodiment 2: microwave drying

[0101] First, the microwave power adjustment is set in the control system 3 through the touch screen 35 . There are 3 levels of microwave input, microwave Ⅰ, microwave Ⅱ, and microwave Ⅲ, and correspond to 3 settings of temperature Ⅰ, temperature Ⅱ, and temperature Ⅲ. When temperature I is set, when the material temperature is lower than the temperature set by I, the microwave display power corresponds to the power set by temperature I. When the material temperature is higher than the temperature set by temperature Ⅰ and lower than the temperature set by temperature Ⅱ, the power displayed by the microwave is the power set by the corresponding temperature Ⅱ. The same is true for the set temperature III. Then turn on radiator 5, microwave source magnetron 21, and stirrer 23. During operation, the microwave source magnetron 21 enters the material inside the drying chamber 4 through the energy feed port 22, and rapidly generates a large a...

Embodiment approach 3

[0102] Embodiment 3: heat pump-microwave combined drying

[0103] According to the drying needs, the drying sequence of the control system 3 in the combined drying, heat pump and microwave drying modes is selected through the touch screen 35, and the experimental conditions are set according to the setting methods described in the above-mentioned embodiment 1 and embodiment 2 respectively. Set the running time of each drying mode, press the timing start button, the selected working mode starts to run, and the timing starts. When the running time is consistent with the set working time, the working mode stops working.

[0104] In the present invention, the setting of each valve in the system is not limited to figure 1 As shown, in order to make the system run normally and facilitate maintenance, valves can be added to the relevant parts of the system.

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Abstract

A heat pump-microwave combined drying device comprises a heat pump system, a microwave system and a control system. The heat pump assembly and the microwave system share a drying chamber, the microwave system is installed on the top of the drying chamber, the heat pump system is connected with the drying chamber through a circulating air duct, and the control system is connected with the heat pump system and the microwave system, used for setting and adjusting drying conditions and online monitoring drying parameters, and capable of selecting microwave drying and / or heat pump drying according to the characteristics of materials and finished product requirements so that high water content materials with different shapes and different water contents or under high-humidity conditions can be dried. The heat pump-microwave combined drying device is reasonable in structural layout, easy to use, maintain and repair, uniform in drying, large in processing capacity, efficient, free of microbial pollution and capable of saving energy, the process is advanced, and the quality of dried products is good. The heat pump-microwave combined drying device is especially suitable for drying fruit and vegetables, drying marine products and drying materials which are high in heat sensitivity and prone to oxidization, and applied to the biological industry, the pharmaceutical industry, the chemical industry and the like.

Description

technical field [0001] The invention relates to drying equipment in the field of food and agricultural product processing, in particular to a multifunctional heat pump-microwave combined drying equipment suitable for drying fruits and vegetables, seafood, and heat-sensitive and easily oxidizable materials. Background technique [0002] Drying technology is an important process that consumes a lot of energy in the process of industrial and agricultural production, and it penetrates into various fields of the national economy. In developed countries, about 12% of industrial energy consumption is used for drying; in various industries in our country, drying energy consumption ranges from 4% (chemical industry) to 35% (paper industry). At present, the common drying technology mostly adopts electric heating, steam or hot air heating. The lost heating air contains a large amount of sensible heat and latent heat, the utilization rate of heat energy is low, the nutrient content of t...

Claims

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Application Information

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IPC IPC(8): F26B9/06F26B3/00F26B3/347F26B21/00
CPCY02P20/10
Inventor 李树君苏丹赵凤敏曹有福丁进锋杨炳南刘威王梅兴丽郭建中
Owner CHINESE ACAD OF AGRI MECHANIZATION SCI
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