Stirring device achieving internal electromagnetic induction heating function

Abstract

The invention discloses a stirring device achieving the internal electromagnetic induction heating function. The stirring device comprises a magnetic field generator, a coil and a heating magneton. The coil is a planar coil or a cylindrical coil and is located above the magnetic field generator and used for generating an alternating magnetic field. The heating magneton comprises a metal induction sheet and a stirring magneton body. The metal induction sheet is annular or tubular and is located outside the stirring magneton body and fixedly connected with the stirring magneton body. The frequency of current passing through the coil is 20-60 kHz, and the instantaneous value of the current is 0.5-20A. The diameter of the metal induction sheet is 20-100 mm. The metal induction sheet is made of ferromagnetic metal or non-ferromagnetic metal and can be covered with a corrosion-resistant protective layer. The protective layer is made of fluoroplastics or quartz glass or glass or ceramic. By the adoption of the stirring device achieving the internal electromagnetic induction heating function, the heating mode of an existing stirring device is changed, the heating efficiency is improved, electricity is saved, and heating is evener.

Description

technical field [0001] The invention relates to a stirring device, in particular to a stirring device for electromagnetic induction internal heating. Background technique [0002] In the field of chemistry and chemical engineering, many chemical processes need to be effectively completed under good mass transfer and heat transfer conditions, which requires the use of heating and stirring equipment. The externally heated electromagnetic stirrer is a commonly used heating and stirring device, and its structure is as follows: figure 1 As shown, the device includes a magnetic field generator 1, a resistive external heating body 2 and a stirring magnet 4, wherein the magnetic field generator 1 can be a permanent magnet type (such as figure 2 As shown), the permanent magnet 13 fixed on the turntable 12 is driven by the motor 11 to generate a rotating magnetic field; it can also be an electromagnetic field type (such as image 3 As shown), by alternately applying potentials of d...

AI Technical Summary

Problems solved by technology

At the same time, electrify the resistance type external heating body 2 to generate heat, and heat the liquid 5 in the container 6 to heat up through heat conduction to realize heat transfer, but the heat transfer efficiency in this way is low, and the heating efficiency is generally 40% to 60%. , a considerable part of the heat is lost in the air

In order to achieve the purpose of heating, it is often necessary to increase the heating power, and at the same time use insulation material 3 to prevent heat loss, but even so, the heating speed is still very slow; and this heating method makes the liquid heated unevenly, which is easy to cause local overheating, which is harmful to chemical adverse effects on the process

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