Industrial Microwave Heating Apparatus Using Helical Antenna Radial Power Radiation

Abstract

The invention belongs to an industrial microwave heating device using the radial radiation power of a helical antenna, which includes a material cylinder with a circular anti-flow groove at the upper mouth and a material inlet and outlet, a mixing cylinder with a circulation groove, and an electrical appliance. The box and the power supply, the fan, the circuit board and the control keyboard, the magnetrons, the power radiation components containing the helical antenna and the motor are located in the barrel and connected to the output ends of the magnetrons and the electrical box respectively. The invention adopts one or more helical antennas as power radiators, with a radial 360-degree high-speed rotation of the global radiation pattern, when the operating frequency f = 2450 MHz, the rotation rate of the microwave electric field is 2.45 × 10 9 times / second (147×10 9 rpm), and has thermal radiation, uniform heating of materials, and high heating efficiency; and because no power amplifier is needed, the present invention has high energy efficiency of a microwave oven, simple structure, light furnace body, microwave radiation, and uniform heating of heated objects. Long service life, low production cost and so on.

Description

technical field [0001] The invention relates to an industrial microwave heating device, in particular to an industrial microwave heating device using the radial radiation power of a helical antenna. The heating device can effectively improve the heating uniformity and heating efficiency of the heated material; it is especially suitable for heating Heat treatment of various liquids, suspensions and other materials. technical background [0002] Since the middle of the last century, scientists abroad, especially the United States, have discovered that microwave power can heat up materials, leading to the invention of household microwave ovens. More than ten years later, people began to apply microwave power to industry, agriculture, science and technology and medical treatment. In 1966, the International Microwave Energy Institute (IMPI) was established in Canada. Shortly thereafter, our country closely followed the development of foreign technologies and gradually carried ou...

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Problems solved by technology

Although this utility model can use microwaves to directly heat crude oil (fluid) by radiation, due to the linearly polarized radiator of the pyramid horn mouth that is adopted, not only the direction of the microwave electric field is fixed, but also the magnetron in the heating device needs Only one waveguide exciter (power amplifier) ​​can complete the purpose of microwave power output; therefore, this patented technology still has defects such as microwave radiation, poor heating uniformity of heated objects, poor heating efficiency, and complicated structure of microwave ovens.

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