Hot air pipe structure

Abstract

The utility model belongs to the technical field of hot air channels, and particularly relates to a hot air pipe structure. A hot air pipe structure comprises a hot air main pipeline. A plurality of supporting platforms are arranged in the hot air main pipeline, the supporting platforms are linearly arranged, a heating assembly is arranged at each supporting platform, and each heating assembly comprises a plurality of annular heating sheets with different diameters and two conducting sheets; the annular heating pieces with different diameters are designed in a concentric circle mode, the two conducting strips sequentially penetrate through the annular heating pieces with different diameters respectively, and the two conducting strips penetrate through the hot air main pipeline.

Description

Technical Field

[0001] The utility model belongs to the technical field of hot air ducts, and particularly relates to a hot air duct structure. Background Art

[0002] A hot air duct is a pipeline system for transporting hot air, which is widely used in hot blast stove systems, blast furnace systems, etc. in industrial production. They are usually made of heat-resistant materials, can withstand high-temperature environments, and ensure the efficient transportation of hot air. Electric heating sheets are usually arranged inside the hot air duct for heating or insulating the air. Currently, for the design of electric heating sheets, they are usually in the shape of bundled fins. A number of flat fins are arranged neatly, and a certain distance is reserved between adjacent fins for air flow to pass through to complete heat exchange. However, the design of bundled fins is usually suitable for hot air ducts with a small area. The main reason is that: the hot air fins work in an environment of 200 - 300 °C for a long time, and the flat fins are prone to heat deformation. Under the action of gravity, the hot air fins are prone to deformation and overlap, eventually causing a short circuit.

[0003] In order to solve the above problems, the utility model hopes to provide a hot air duct structure. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a hot air duct structure to solve the problems raised in the above background art.

[0005] To achieve the above purpose, the utility model provides the following technical solutions:

[0006] A hot air duct structure includes a main hot air duct; a number of support platforms are arranged in the main hot air duct, the number of support platforms are arranged in a straight line, and a heating component is provided at each support platform. The heating component includes a number of annular heating sheets with different diameters and two conductive sheets; the number of annular heating sheets with different diameters are designed in a concentric circle, and the two conductive sheets respectively penetrate through the number of annular heating sheets with different diameters in sequence, and the two conductive sheets penetrate through the main hot air duct.

[0007] Preferably, the number of annular heating sheets with different diameters are arranged in a concentric circle, and the two conductive sheets and the support platform are arranged in a cross shape.

[0008] Preferably, there is a gap between the heating components.

[0009] Preferably, a heat insulation layer is provided outside the main hot air duct, and the conductive sheet penetrates through the heat insulation layer.

[0010] Preferably, the main hot air duct includes a number of hot air duct monomers, and a support platform is arranged in each hot air duct monomer.

[0011] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0012] (1) A hot air duct structure provided by the utility model is provided with a plurality of groups of heating components in the hot air duct. The heating components include a plurality of annular heating sheets with different diameters. Compared with electric heating fins, the circular structure of the annular heating sheets has better heat resistance and anti-deformation performance;

[0013] (2) A hot air duct structure provided by the utility model has independent support platforms. It can not only replace a single support platform, but also ensure the internal and external heat exchange of the annular heating sheet, making the heat distribution inside the hot air duct uniform, preventing the temperature of the inner annular heating sheet from being significantly higher than that of the outer annular heating sheet, and the service life of the inner annular heating sheet is significantly longer than that of the outer annular heating sheet;

[0014] (3) A hot air duct structure provided by the utility model can ensure the support effect of the annular heating sheet and realize power transmission through two conductive sheets and support platforms arranged in a cross shape. Description of the Drawings

[0015] Figure 1 It is a schematic structural diagram of the utility model wrapped with a heat insulation layer;

[0016] Figure 2 It is a schematic structural diagram of the body of the utility model;

[0017] Figure 3 It is a front view of the utility model wrapped with a heat insulation layer;

[0018] In the figure: 1, main hot air duct; 2, hot air duct unit; 3, support platform; 4, heating component; 5, annular heating sheet; 6, conductive sheet; 7, heat insulation layer. Detailed Embodiments

[0019] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0020] A hot air duct structure includes a main hot air duct 1. The main hot air duct 1 includes four hot air duct monomers 2, and the hot air duct monomers 2 are riveted to each other. Each hot air duct monomer 2 is provided with a support platform 3 inside. The main hot air duct 1 is in a straight line, correspondingly, the four support platforms 3 are arranged in a straight line. A heating component 4 is provided at each support platform 3. The heating component includes four annular heating sheets 5 with different diameters and two conductive sheets 6. The four annular heating sheets 5 with different diameters are arranged in a concentric circle design. The annular design of the annular heating sheet 5 can effectively resist the deformation effect. The two conductive sheets 6 respectively penetrate through the four annular heating sheets 5 with different diameters in sequence. The conductive sheet 6 penetrates through the main hot air duct 1 and is further connected to an external power supply to supply power to the annular heating sheet 5. In order to ensure the support effect, in each hot air duct monomer 2, the two conductive sheets 6 and the support platform 3 are arranged in a cross shape. The four support platforms 3 are independent of each other, which can not only realize the replacement of a single support platform 3, but also ensure the internal and external heat exchange of the annular heating sheet 5, enable the heat distribution inside the hot air duct to be uniform, prevent the temperature of the inner annular heating sheet 5 from being significantly higher than that of the outer annular heating sheet 5, and the service life of the inner annular heating sheet 5 is significantly longer than that of the outer annular heating sheet 5. In order to enhance the heat preservation effect of the main hot air duct 1, a heat preservation layer 7 is provided outside the main hot air duct 1, and the corresponding conductive sheet 6 also penetrates through the heat preservation layer 7 synchronously.

[0021] Although the embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made in these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A hot air duct structure, characterized in that: It includes a main hot air duct; several support platforms are provided in the main hot air duct, the several support platforms are arranged in a straight line, and a heating component is provided at each support platform. The heating component includes several annular heating sheets with different diameters and two conductive sheets; the several annular heating sheets with different diameters are designed as concentric circles, the two conductive sheets respectively penetrate through the several annular heating sheets with different diameters in sequence, and the two conductive sheets penetrate through the main hot air duct.

2. The hot air duct structure according to claim 1, characterized in that: The several annular heating sheets with different diameters are arranged in concentric circles, and the two conductive sheets and the support platform are arranged in a cross shape.

3. The hot air duct structure according to claim 1, characterized in that: There is a gap between the heating components.

4. A hot air duct structure according to claim 1, characterized in that: A heat insulation layer is provided outside the main hot air duct, and the conductive sheet penetrates through the heat insulation layer.

5. A hot air duct structure according to claim 1, characterized in that: The main hot air duct includes several hot air duct monomers, and a support platform is provided in each hot air duct monomer.

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