Cold trap microwave vacuum drying device

Abstract

The invention provides a cold trap microwave vacuum drying device in the technical field of fruit and vegetable drying. The cold trap microwave vacuum drying device comprises a cold trap device, a vacuum pump and a tank body provided with an accommodating cavity, wherein the vacuum pump and the cold trap device are connected with the tank body, tank covers are installed at two ends of the tank body, a rotatable material tank is arranged in the tank body, a cavity for a material to be placed is formed in the material tank, a microwave generator for heating the material tank is arranged at the bottom of the inner wall of the tank body, a feeding port and a discharging port of the material tank are respectively formed in two ends of the material tank, a material is discharged out of the tank body through the discharging port formed in the material tank, and a plurality of exhausting holes are distributed in the material tank. The drying efficiency can be improved, material drying is uniform, drying temperature is appropriate, and the quality of a dried product is improved.

Description

technical field [0001] The invention relates to a device for freeze-drying food, in particular to a device for vacuum microwave cold trap drying of fruits and vegetables. Background technique [0002] Drying is an effective method for long-term preservation of food. Traditional hot air drying consumes a lot of energy and has low efficiency. At present, the following two drying technologies are usually used for drying vegetables. The first is microwave drying technology, which often appears Overheating, the local temperature will exceed 100°C, which will reduce the quality of the dry product and lose all the nutrients. These are all caused by the failure to control the transfer of heat and water during the microwave heating process, so that the microwave heating cannot be the most reasonable and efficient. The most effective use; the second is to use freeze-drying technology to dry food, the time period of freeze-drying is very long, the efficiency is low, and the quality of ...

AI Technical Summary

Problems solved by technology

[0003] Aiming at the defects in the prior art, the purpose of the present invention is to solve the technical problems of low efficiency and poor material drying effect, and provide a cold trap microwave vacuum drying device, which can improve drying efficiency, uniformly dry materials, and suitable drying temperature , improve the quality of dry products

Images