An electric heating device with improved gas circuit

Abstract

This utility model discloses an improved electric heating device for gas paths, relating to the field of gas path electric heating technology. Its key technical features include a heating air duct and a heating air guide component. The heating air guide component is fixedly installed inside the heating air duct. The heating air guide component includes an air guide pipe disposed within the heating air duct and a support ring frame for supporting the air guide pipe. A spiral heating wire is sleeved on the outside of the air guide pipe. Installation openings are provided around the air guide pipe, and a heat-conducting plate is fixedly connected to each installation opening. Several evenly distributed heat dissipation fins are fixedly connected to the inner wall of the heat-conducting plate. The technical effect is that by setting up the heating air guide component, when heating the air in the gas path, the spiral heating wire can be activated. The spiral heating wire transfers heat to the heat-conducting plate, allowing the heat from the heat-conducting plate to be transferred to the heat dissipation fins. The air entering the heating air duct from the gas path pipe is diverted by the air guide pipe, improving air heating efficiency.

Description

Technical Field

[0001] This utility model relates to the field of gas circuit electric heating technology, specifically an electric heating device with improved gas circuit. Background Technology

[0002] In industrial production, laboratory reactions, and equipment temperature control, gas heating in the gas path system is a critical component, as its heating efficiency, temperature uniformity, and equipment stability directly impact production quality and energy costs. Currently, existing gas path electric heating devices primarily heat the flowing gas using heating elements (such as resistance wires and heating tubes).

[0003] Existing devices mostly use a single-channel gas path design, where gas flows through the heating element as a whole gas flow. Some gas flows out of the device without fully absorbing heat due to excessive flow velocity or insufficient contact time with the heating element, resulting in the heat generated by the heating element not being effectively utilized. At the same time, a "laminar boundary layer" easily forms between the gas and the surface of the heating element, hindering the transfer of heat from the element to the gas and further reducing heating efficiency.

[0004] Therefore, we propose an electric heating device with improved gas path. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] To address the shortcomings of existing technologies, this utility model provides an electric heating device with an improved gas path, which solves the problem of low heating efficiency in existing electric heating devices with gas paths.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, the present invention provides the following technical solution: an electric heating device with improved air circuit, comprising a heating air duct and a heating air guide, wherein the heating air guide is fixedly installed inside the heating air duct, and the heating air guide includes an air guide pipe disposed inside the heating air duct and a support ring frame for supporting the air guide pipe;

[0009] The air duct is fitted with a spiral heating wire, and there are installation ports on all four sides of the air duct. A heat-conducting plate is fixedly connected inside the installation port, and several evenly distributed heat dissipation fins are fixedly connected to the inner wall of the heat-conducting plate.

[0010] Preferably, both ends of the heating air duct are provided with mounting plates, and the mounting plates are provided with multiple annularly distributed mounting holes.

[0011] Preferably, a sealing ring is embedded in the inner wall of the heating air duct near the mounting plate.

[0012] Preferably, a first screw is threaded onto the outer wall of the heating air duct, and the support ring frame is fixedly installed inside the heating air duct by the first screw.

[0013] Preferably, a second screw is threaded onto the outer wall of the support ring frame, and the air guide pipe is fixedly installed inside the support ring frame by the second screw.

[0014] Preferably, both the heat-conducting plate and the heat sink are made of aluminum alloy, and the heat-conducting plate is arranged parallel to the direction of the air duct.

[0015] Preferably, the air duct is coaxially arranged inside the heating air duct.

[0016] (III) Beneficial Effects

[0017] Compared with the prior art, this utility model provides an electric heating device with improved gas path, which has the following beneficial effects:

[0018] 1. This utility model, by setting a heating air guide component, can activate a spiral heating wire when heating the air in the air passage. The spiral heating wire will transfer heat to the heat conduction plate, so that the heat of the heat conduction plate is transferred to the heat sink. The air entering the heating air duct from the air passage pipe will be split by the air guide pipe. Part of the air flows through the gap between the heating air duct and the air guide pipe, and the other part flows through the air guide pipe. The air flowing through the gap between the heating air duct and the air guide pipe will be directly heated by the spiral heating wire, while the air flowing through the air guide pipe will have a large contact area with the heat sink, using the heat sink to dissipate heat to heat the air, thereby improving the air heating efficiency.

[0019] 2. By setting the first screw, the support ring frame can be fixed inside the heating air duct. When it is necessary to disassemble the heating air guide, the support ring frame and the heating air duct can be removed to facilitate the removal and maintenance of the heating air guide. By setting the second screw, the air guide pipe can be fixed to the support ring frame. When it is necessary to disassemble the spiral heating wire, the support ring frame can be removed from both ends of the air guide pipe to facilitate the replacement of the spiral heating wire. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0021] Figure 2 This is a schematic diagram of the internal structure of the heating air duct of this utility model;

[0022] Figure 3 This is a schematic diagram of the front cross-sectional structure of this utility model;

[0023] Figure 4 This is a side view cross-sectional structural diagram of the air duct of this utility model.

[0024] In the picture:

[0025] 1. Heating air duct; 11. Mounting plate; 12. Mounting hole; 13. Sealing ring; 14. First screw;

[0026] 2. Heating air guide; 21. Air guide duct; 22. Support ring frame; 23. Spiral heating wire; 24. Mounting port; 25. Heat conduction plate; 26. Heat sink; 27. Second screw. Detailed Implementation

[0027] In this utility model, unless otherwise stated, the orientations used, such as "up" and "down", usually refer to the direction shown in the accompanying drawings, or to the vertical, perpendicular, or gravitational direction; similarly, for ease of understanding and description, "left" and "right" usually refer to the left and right shown in the accompanying drawings; "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not used to limit this utility model.

[0028] This utility model provides a technical solution:

[0029] Please see Figures 1-4 An improved electric heating device with an improved gas path includes a heating air duct 1 and a heating air guide 2. The heating air guide 2 is fixedly installed inside the heating air duct 1. Both ends of the heating air duct 1 are provided with mounting plates 11. Multiple annularly distributed mounting holes 12 are opened on the mounting plates 11. By setting the mounting plates 11, the heating air duct 1 can be installed and connected to the gas path pipeline, so that the heating air duct 1 can be installed on the gas path pipeline.

[0030] Among them, a sealing ring 13 is embedded in the inner wall of the heating air duct 1 near the mounting plate 11. By setting the sealing ring 13, the sealing performance at the connection between the mounting plate 11 and the air pipeline can be improved.

[0031] Specifically, the heating air guide component 2 includes an air guide pipe 21 disposed within the heating air duct 1 and a support ring frame 22 for supporting the air guide pipe 21. The air guide pipe 21 is coaxially disposed within the heating air duct 1, and a spiral heating wire 23 is sleeved on the outside of the air guide pipe 21. Installation openings 24 are provided around the air guide pipe 21, and a heat-conducting plate 25 is fixedly connected within each installation opening 24. Several evenly distributed heat dissipation fins 26 are fixedly connected to the inner wall of the heat-conducting plate 25. Both the heat-conducting plate 25 and the heat dissipation fins 26 are made of aluminum alloy. The heat-conducting plate 25 is arranged parallel to the direction of the air guide pipe 21. By setting the heating air guide component 2, when heating the air in the air passage... The spiral heating wire 23 can be activated, which will transfer heat to the heat-conducting plate 25, so that the heat of the heat-conducting plate 25 is transferred to the heat sink 26. The air entering the heating air duct 1 from the air passage will be split by the air guide pipe 21. Part of the air flows through the gap between the heating air duct 1 and the air guide pipe 21, and the other part of the air flows through the air guide pipe 21. The air flowing through the gap between the heating air duct 1 and the air guide pipe 21 will be directly heated by the spiral heating wire 23, while the air flowing through the air guide pipe 21 will have a large contact area with the heat sink 26, using the heat sink 26 to dissipate heat to heat the air, thereby improving the air heating efficiency.

[0032] The outer wall of the heating air duct 1 is threaded with a first screw 14, and the support ring frame 22 is fixedly installed inside the heating air duct 1 by the first screw 14. By setting the first screw 14, the support ring frame 22 can be fixed inside the heating air duct 1. When it is necessary to disassemble the heating air guide 2, the support ring frame 22 can be removed from the heating air duct 1, so that the heating air guide 2 can be taken out for maintenance.

[0033] The outer wall of the support ring frame 22 is threaded with a second screw 27. The air guide pipe 21 is fixedly installed inside the support ring frame 22 by the second screw 27. By setting the second screw 27, the air guide pipe 21 can be fixed to the support ring frame 22. When it is necessary to disassemble the spiral heating wire 23, the support ring frame 22 can be removed from both ends of the air guide pipe 21 to facilitate the replacement of the spiral heating wire 23.

[0034] In practical use, the working principle of this utility model is as follows:

[0035] First, the heating air duct 1 can be installed and connected to the gas pipeline through the mounting plate 11, so that the heating air duct 1 can be installed on the gas pipeline.

[0036] When heating the air in the air passage, the spiral heating wire 23 can be activated. The spiral heating wire 23 will transfer heat to the heat conduction plate 25, so that the heat of the heat conduction plate 25 is transferred to the heat sink 26. The air entering the heating air duct 1 from the air passage will be split by the air guide pipe 21. Part of the air flows through the gap between the heating air duct 1 and the air guide pipe 21, and the other part of the air flows through the air guide pipe 21. The air flowing through the gap between the heating air duct 1 and the air guide pipe 21 will be directly heated by the spiral heating wire 23, while the air flowing through the air guide pipe 21 will have a large contact area with the heat sink 26. The heat sink 26 will dissipate heat to heat the air, thereby improving the air heating efficiency.

[0037] In summary, this improved electric heating device for the air path, by setting up a heating air guide 2, can activate the spiral heating wire 23 when heating the air in the air path. The spiral heating wire 23 will transfer heat to the heat conduction plate 25, so that the heat of the heat conduction plate 25 is transferred to the heat sink 26. The air entering the heating air duct 1 from the air path pipe will be divided by the air guide pipe 21. Part of the air flows through the gap between the heating air duct 1 and the air guide pipe 21, and the other part of the air flows through the air guide pipe 21. The air flowing through the gap between the heating air duct 1 and the air guide pipe 21 will be directly heated by the spiral heating wire 23, while the air flowing through the air guide pipe 21 will have a large contact area with the heat sink 26, using the heat dissipation of the heat sink 26 to heat the air, thereby improving the air heating efficiency.

[0038] The above are merely specific embodiments of this utility model, but the technical features of this utility model are not limited thereto. Any simple changes, equivalent substitutions, or modifications made based on this utility model to solve essentially the same technical problems and achieve essentially the same technical effects are all covered within the protection scope of this utility model.

Claims

1. An electric heating device with improved airflow, comprising a heating air duct (1) and a heating air guide (2), characterized in that: The heating air guide (2) is fixedly installed inside the heating air duct (1). The heating air guide (2) includes an air guide pipe (21) disposed inside the heating air duct (1) and a support ring frame (22) for supporting the air guide pipe (21). The air duct (21) is fitted with a spiral heating wire (23), and an installation port (24) is provided around the air duct (21). A heat-conducting plate (25) is fixedly connected inside the installation port (24), and several evenly distributed heat sinks (26) are fixedly connected to the inner wall of the heat-conducting plate (25).

2. The electric heating device with improved gas path according to claim 1, characterized in that: Both ends of the heating air duct (1) are provided with mounting plates (11), and the mounting plates (11) are provided with multiple annularly distributed mounting holes (12).

3. The electric heating device with improved gas path according to claim 2, characterized in that: A sealing ring (13) is embedded in the inner wall of the heating air duct (1) near the mounting plate (11).

4. The electric heating device with improved gas path according to claim 1, characterized in that: The outer wall of the heating air duct (1) is threaded with a first screw (14), and the support ring frame (22) is fixedly installed inside the heating air duct (1) by the first screw (14).

5. The electric heating device with improved gas path according to claim 1, characterized in that: The outer wall of the support ring frame (22) is threaded with a second screw (27), and the air duct (21) is fixedly installed inside the support ring frame (22) by the second screw (27).

6. The electric heating device with improved gas path according to claim 1, characterized in that: Both the heat-conducting plate (25) and the heat sink (26) are made of aluminum alloy, and the heat-conducting plate (25) is arranged parallel to the direction of the air duct (21).

7. The electric heating device with improved gas path according to claim 1, characterized in that: The air duct (21) is coaxially arranged inside the heating air duct (1).

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