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High-temperature induction heating furnace

An induction heating furnace, high temperature technology, applied in induction heating, lighting and heating equipment, furnaces and other directions, can solve the problems of burning insulation material, unable to reach the furnace temperature, easy cracking of the coil casting layer, etc., to improve the thermal insulation performance, prolong the The effect of service life and lower operating costs

Pending Publication Date: 2022-07-01
株洲弗拉德科技有限公司
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] With the continuous development of science and technology, high-temperature materials have higher and higher requirements for heat treatment temperature. Some high-temperature materials require heat treatment temperature to reach or exceed 3000 ° C. Induction heating furnace is an ideal heat treatment equipment that can meet the heat treatment process requirements of 3000 ° C. However, due to the unreasonable design of the furnace structure, the existing induction heating technology cannot reach the furnace temperature above 3000°C even if the induction power is increased, or the furnace cannot operate stably for a long time
[0003] Furthermore, there is no cooling coil in the inter-turn gap of the heating coil of the ordinary high-temperature induction heating furnace, which makes the casting layer of the coil easy to crack, resulting in a short circuit of the heating coil to the insulation layer or the furnace shell, which seriously affects the normal operation of the high-temperature induction furnace; On the other hand, ordinary high-temperature induction furnaces use carbon felt or graphite felt for insulation near the heating element, and the insulation material is severely burned, which also seriously affects the normal operation of the high-temperature induction furnace.

Method used

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Examples

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Embodiment 1

[0027] The utility model relates to a vertical high-temperature induction heating furnace. The furnace body is a vertical structure, including a furnace body. The center of the furnace body is a columnar heating body 1, and the center of the heating body 1 is hollow, which is a furnace chamber 50 for accommodating materials. The thermal insulation layer is arranged on the outside of the heating body 1 and wraps the heating body. The thermal insulation layer includes a sleeve thermal insulation layer, an upper thermal insulation layer and a lower thermal insulation layer, and the inductor 3 is arranged on the outside of the sleeve thermal insulation layer. Inductor 3 is cast with high temperature resistant insulating cement, which wraps heating coil 3001, sleeve type cooling coil 3009, upper cooling coil 3003, and lower cooling coil 3002. The high temperature resistant cement is oxide insulating cement resistant to high temperature above 1500℃. The heating coil 3001 is spirally ...

Embodiment 2

[0040] The difference from Example 1 is that the upper or lower thermal insulation layer of this example is provided with a powder thermal insulation layer. like figure 1 As shown, the upper end of the heating element is provided with an inner step 1001, the inner cover 7 is placed on the inner step, the inner cover is set into a basin shape, and the middle is a storage cavity, which is filled with carbonaceous powder thermal insulation material, which constitutes the upper powder thermal insulation material. A solid insulation layer 9 such as carbon felt or graphite felt can be added above the upper powder insulation layer. An inner bottom 8 is arranged below the heating body, and the inner bottom is in the shape of a basin, which is filled with carbonaceous powder thermal insulation material to form a lower powder thermal insulation layer. Solids such as carbon felt or graphite felt can be added under the lower powder thermal insulation layer. Insulation layer 10 . The top...

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Abstract

A high-temperature induction heating furnace comprises a furnace body (4), a heating body (1), a heat preservation layer and an inductor (3), the heating body (1), the heat preservation layer and the inductor (3) are sequentially arranged in the furnace body from inside to outside, the inductor (3) comprises a heating coil (3001) and a bushing type cooling coil (3009), the heating coil (3001) is spirally wound on the outer side of the heating body (1), and the bushing type cooling coil (3009) is spirally inlaid in a turn-to-turn gap of the heating coil (3001); the inductor (3) further comprises a pouring layer (3007); the heating coil (3001) and the bushing type cooling coil (3009) are wrapped in the pouring layer (3007); the heat preservation layer comprises a sleeve heat preservation layer (2), an upper heat preservation layer (9) and a lower heat preservation layer (10), and the sleeve heat preservation layer (2) is arranged between the pouring layer (3007) and the heating body (1). The heating furnace has the advantages of high hearth temperature, uniform temperature and long service life.

Description

technical field [0001] The invention relates to an induction heating device, in particular to an induction heating furnace with a powder insulation layer. Background technique [0002] With the continuous development of science and technology, high temperature materials have higher and higher requirements for heat treatment temperature. Some high temperature materials require heat treatment temperature to reach or exceed 3000 °C. Induction heating furnace is an ideal heat treatment equipment that can meet the requirements of 3000 °C heat treatment process. However, due to the unreasonable structure design of the furnace body in the existing induction heating technology, even if the induction power is increased, the furnace temperature above 3000 ℃ still cannot be reached, or the furnace body cannot run stably for a long time. [0003] Furthermore, there is no cooling coil in the inter-turn space of the heating coil of the ordinary high-temperature induction heating furnace, ...

Claims

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Application Information

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IPC IPC(8): F27B14/06F27B14/08F27B14/20F27D9/00H05B6/36H05B6/42
CPCF27B14/061F27B14/08F27B14/20F27D9/00H05B6/367H05B6/42F27B2014/066F27B2014/0837F27B2014/0843F27D2009/0021
Inventor 言伟雄袁建陵
Owner 株洲弗拉德科技有限公司