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Electric heat radiation device for heat treatment furnace

An electrothermal radiation, heat treatment furnace technology, applied in furnaces, electric furnace heating, furnace components, etc., can solve the problems of slow heating speed and poor temperature uniformity, and achieve the effect of increasing heating speed, uniform internal stress distribution and lower surface temperature.

Pending Publication Date: 2019-03-08
SHANGHAI YIBAI IND FURNACES CO LTD
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Problems solved by technology

Traditional radiant tubes have problems such as slow heating rate and poor temperature uniformity

Method used

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  • Electric heat radiation device for heat treatment furnace
  • Electric heat radiation device for heat treatment furnace

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Embodiment

[0023] Such as figure 1 , 2 As shown, an electric heating radiation device for a heat treatment furnace includes a radiant tube 1 that extends into the furnace body for heat dissipation. The radiant tube 1 is a metal tube without an electric heating wire inside, and the radiant tube 1 is located in the furnace body. The inner end is open, and the side wall is provided with a heat conduction port 11. After the radiant tube 1 is energized, the inner surface and the outer surface of the radiant tube 1 are used to convert electric energy into heat energy. for heating.

[0024] The electrothermal radiation device of this embodiment adopts a new type of radiation tube structure, which is different from traditional radiation tubes. There is no resistance wire winding inside the radiation tube 1, and the radiation tube 1 itself is a heating body. When the radiation tube 1 is connected to the power supply, the current flows through the radiation tube. Joule heat is generated on the i...

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Abstract

The invention relates to an electric heat radiation device for a heat treatment furnace. The electric heat radiation device comprises a radiation tube (1), wherein the radiation tube (1) extends intoa furnace body and is used for heat dissipation, the radiation tube (1) is a metal tube without electric heating wire inside, the radiation tube (1) is located at an opening of the end of the interiorof the furnace body, and the radiation tube (1) is used as a heating body to directly heat the interior of the furnace body after being electrified. Compared with the prior art, the special structureof the radiation tube reduces the heat transfer link and thermal resistance, so that the heat transfer efficiency is improved; and meanwhile, under the same working temperature, the surface temperature of the heating body is reduced, and the service life of the radiation tube is prolonged.

Description

technical field [0001] The invention relates to an electric heat radiation device, in particular to an electric heat radiation device used in a heat treatment furnace. Background technique [0002] At present, the heat treatment furnace uses a traditional radiant tube heating device. The radiant tube is usually made of heat-resistant alloy steel, and a heating element, such as a resistance wire winding, is arranged inside the tube. When the power is turned on, the resistance wire generates Joule heat to heat up the heat treatment furnace. Traditional radiant tubes have problems such as slow heating rate and poor temperature uniformity. Therefore, it is necessary to develop a new type of electrothermal radiation device that can improve the heating rate and the uniformity of the furnace temperature. Contents of the invention [0003] The object of the present invention is to provide an electric heat radiation device for a heat treatment furnace in order to overcome the abo...

Claims

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Application Information

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IPC IPC(8): F27D11/10
CPCF27D11/10
Inventor 杨景峰寇生中
Owner SHANGHAI YIBAI IND FURNACES CO LTD
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