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Magnetic yoke body of induction heating furnace

A technology of induction heating furnace and yoke, which is applied in the direction of induction heating and coil device, can solve the problems of high production cost and complex structure of induction heating furnace, and achieve the effect of reducing the secondary consumption of electric power and reducing power consumption

Inactive Publication Date: 2020-02-04
樊承亮
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The yoke of the induction heating furnace is an important part of the induction heating furnace. It is installed on the periphery of the induction coil, so that as much magnetic field as possible can pass through the yoke to form a loop, which is used to reduce the leakage magnetic field and achieve the purpose of shielding the magnetic field; the yoke is usually Refers to the soft magnetic material that does not generate a magnetic field itself and only plays the role of magnetic field transmission in the magnetic circuit. The yoke of the intermediate frequency induction furnace is generally made of silicon steel sheets with relatively high magnetic permeability, and the silicon steel sheets are stacked to make long squares. In some In special occasions, the yoke is also made of ferrite materials; in use, the heat of the yoke is relatively high. In order to reduce the temperature of the yoke, cooling water pipes can only be installed on the yoke, thus making the induction heating furnace Complex structure and high production cost

Method used

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  • Magnetic yoke body of induction heating furnace
  • Magnetic yoke body of induction heating furnace
  • Magnetic yoke body of induction heating furnace

Examples

Experimental program
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Effect test

Embodiment 1

[0055] Such as Figure 7 As shown, in this embodiment, the yoke unit body is a column-type fixed combined flat plate structure, and the yoke unit body has an outer fixing plate 13 for clamping the yoke element 8, a magnet The inner fixed plate 6 of the yoke element; the combination of the inner fixed plate 6 of the yoke element and the induction coil 1 is as follows: figure 2 Shown; induction coil 1 as figure 1 shown.

[0056] The center of the inner fixing plate 6 of the yoke element has a row of fixing holes 7 cooperating with the fastening bolts 3 on the induction coil; The fixing holes 7, the row of fixing holes 7 on both sides are two rows symmetrically arranged;

[0057] combine image 3 , the supporting and fixing column 2 is located in the middle of the inner fixing plate 6 of the yoke element, and the supporting and fixing column 2 is fixedly connected with the induction coil 1 through the fixing bolt 3 fixed on the induction coil 1; There are a plurality of thr...

Embodiment 2

[0068] Figure 16 A schematic structural diagram of Embodiment 2 of the present invention is given. The main structure of this embodiment is the same as that of Embodiment 1. In this embodiment, the yoke unit body is a flat yoke structure fixed between columns, and the yoke unit multiple bodies; combined Figure 11 , each yoke unit body includes a yoke element outer fixing plate 13 and a yoke element inner fixing plate 6 for clamping the yoke element 8; the yoke element outer fixing plate and the yoke element inner fixing plate will The yoke elements 8 are sandwiched in one piece and arranged uniformly along the periphery of the induction coil 1 .

[0069] combine Figure 8 , the fixed plate 6 inside the yoke element has a fixed hole 7 for passing through the fastening screw 10; the fixed holes 7 are arranged in two rows symmetrically; the upper end of the fixed plate 6 inside the yoke element , the lower end and the middle part are respectively designed with reserved openi...

Embodiment 3

[0083] Figure 19 A schematic structural diagram of Embodiment 3 of the present invention is given. In this embodiment, the yoke unit body is a fixed arc structure between columns, combined with Figure 17 As shown, the yoke element 8 is an arc-shaped plate structure; the yoke element 8 is arranged around the periphery of the induction coil 1; the supporting connection mechanism has a supporting fixed column 2 and a pressing plate 15; the described The supporting and fixing columns 2 are arranged between every two adjacent yoke elements 8;

[0084]After the arc-shaped yoke element is placed in place, the outer end surface of the supporting and fixing column 2 is an arc shape matching the arc shape of the yoke element 8, and the inner wall surface is an arc-shaped pressure plate 15 and bolts, and the The yoke element 8 on both sides of the supporting column 2 is fixedly connected with the induction coil 1; the structure of the pressing plate 15 is as follows: Figure 18 As sh...

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Abstract

The invention relates to the technical field of induction heating furnaces, and discloses a magnetic yoke body of an induction heating furnace. The magnetic yoke body of the induction heating furnaceis provided with a plurality of magnetic-conductive and non-conductive magnetic yoke unit bodies; the plurality of yoke unit bodies are uniformly distributed around the periphery of an induction coil;each magnetic yoke unit body at least comprises one, two or more magnetic yoke elements; each magnetic yoke element is a required geometric body prepared by uniformly mixing a powdery or granulated soft magnetic substance with powder of Portland cement or aluminate cement; the magnetic yoke elements have the magnetic-conductive and non-conductive characteristics; and each magnetic yoke unit bodyfurther comprises a supporting connection mechanism used for fixedly connecting the magnetic yoke unit body with the induction coil. The magnetic yoke body fundamentally solves the problems of eddy current and high calorific value of a magnetic yoke manufactured from current silicon steel sheets in the using process, and reduces the electric energy loss; and in addition, by adopting the magnetic yoke body, a water cooling device no longer needs to be additionally arranged, so that the reliability is improved, the secondary energy consumption is reduced and the production cost is reduced.

Description

technical field [0001] The invention relates to the technical field of induction heating furnaces, in particular to an induction heating furnace yoke body. Background technique [0002] The induction heating furnace is a power supply device that converts the power frequency 50HZ AC power into an intermediate frequency of 300HZ to 3000HZ. It converts the three-phase power frequency AC power into DC power after rectification, and then converts the DC power into adjustable medium frequency AC power. The supply is provided by capacitors and The medium-frequency alternating current flowing in the resonant circuit formed by the induction coil generates a magnetic field with changing direction and intensity in the induction coil, passes through the metal material placed in the induction coil, and cuts the metal material contained in the induction coil. A large eddy current is generated in the metal material to generate heat. [0003] The yoke of the induction heating furnace is an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05B6/36
CPCH05B6/36
Inventor 樊承亮
Owner 樊承亮
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