A rotating basket type fruit and vegetable air puffing equipment

Abstract

The invention relates to fruit and vegetable airflow puffing equipment of a material basket rotating type. By utilizing a transmission device, a material basket, a far-infrared heating device and a liquefied air cooling device, fruits and vegetables are puffed evenly and rapidly; and the substantially all flavors, colors and nutrients of the original fruits and vegetables are retained. According to the working principle, under the actions of an air compressor and a far-infrared heating tube, the pressure and the temperature of materials in a puffing tank are increased rapidly while the material basket rotates slowly, so that the materials which are turned over in the puffing tank are heated evenly; when the temperature and the pressure satisfy the process requirement, a valve connected with a vacuum storage tank is opened quickly, so that the water in the materials is vaporized under the action of internal and external pressure differences; and thus the materials are puffed and dried. Next, the materials are heated for a period of time under the vacuum condition and dried to reach the required water content; then the fruit and vegetable materials are cooled and molded by spraying a liquid cooling medium; and finally, the materials are packaged by opening the tank, i.e., a finished product is obtained. The puffing equipment provided by the invention has the advantages that the materials are evenly and rapidly heated as well as rapidly cooled, so that the process time is shortened; the energy utilization rate is improved; the product quality is improved; and the energy conservation is realized.

Description

technical field [0001] The invention relates to the field of food processing equipment, in particular to an airflow puffing equipment for fruits and vegetables, especially a rotating basket-type airflow puffing equipment for fruits and vegetables, the basket of which can be rotated and can realize rapid and uniform heating and cooling. Background technique [0002] Fruit and vegetable puffed food, as a typical dehydrated fruit and vegetable product, is deeply loved by consumers for its advantages of natural color, crisp taste, uniform puffing and convenient consumption. At present, the ideal processing technology in the market is low temperature and high pressure air flow puffing technology. Air puffing is a physical process, which uses the instantaneous pressure difference of the external environment to change the tissue structure of the raw materials of fruits and vegetables containing part of the water under relatively low temperature and high pressure conditions, and the...

AI Technical Summary

Problems solved by technology

Existing air puffing equipment generally uses steam as the heating source for material puffing, and cooling water is used as the cooling source during the cooling and shaping process. The heat is mainly carried out by heat conduction, resulting in slow material heating and cooling speed, longer process time, and low puffing rate of fruits and vegetables. , high energy consumption; most of the equipment is a fixed tray structure, the material is heated through the serpentine coil, and the material is always in a static state during the production process. Since the raw material is pre-dried and stacked in sheet form, it is similar to porous media. , the heat transfer and penetration ability is weak, resulting in uneven heating of the product, low output, hard core, and easy coking

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