An oblique tube type electric heating structure

Abstract

The utility model relates to industrial heating technical field, and disclose a kind of oblique insertion pipe type electric heating structure, including the electric heating structure in heat exchange volume, electric heating structure includes fixed plate and oblique insertion type distribution on the electric heating tube of fixed plate outer wall, electric heating tube adopts cross helical arrangement, and each electric heating tube is helically cross distribution;Electric heating tube includes the electric heating tube body of U-shaped structure setting, fin, connecting plate, binding post, first high-temperature ceramic block and the binding nut on the outer wall of electric heating tube body outer wall binding post, two first high-temperature ceramic blocks outside located electric heating tube body end portion are equipped with connecting ceramic plate, and the bottom of connecting plate parallel to the fin outside electric heating tube body side is connected with the top of connecting ceramic plate. The electric heating structure of the application is innovated with cross helical oblique insertion+fin, increases contact area, reduces dead angle, prolongs medium contact time, improves heat exchange ratio, breaks through traditional limitation, and improves efficiency and reduces consumption.

Description

Technical Field

[0001] This utility model relates to the field of industrial heating technology, specifically to an inclined tube-type electric heating structure. Background Technology

[0002] In industrial heating and medium heat exchange, the heat exchange efficiency of electric heating structures is closely related to their structural layout. Among these, the arrangement of the electric heating tubes is one of the core factors affecting the heat exchange ratio per unit volume. In existing electric heating structures, the electric heating tubes are mostly arranged in a horizontal or vertical straight-insertion manner: their structure typically uses a central semiconductor ceramic plate as the core component, with the semiconductor ceramic plate serving as a key component for heating or auxiliary heat conduction, providing the basic heat source for overall heat exchange; while the electric heating tubes are distributed outside the semiconductor ceramic plate in a straight-insertion form, arranged in a horizontal or vertical manner, achieving heat transfer through direct contact with the flowing medium.

[0003] However, this traditional horizontal / vertical direct-insertion arrangement has certain limitations: because the electric heating tubes and the semiconductor ceramic plates are distributed in a fixed parallel or perpendicular direction, the arrangement density of the electric heating tubes and the contact area with the medium are structurally limited within a limited heat exchange volume. This easily creates dead zones for medium flow, resulting in short contact time between the medium and the heating tubes, insufficient heat exchange, and difficulty in further improving the heat exchange ratio per unit volume. Furthermore, the connection method between the direct-insertion heating tubes and the semiconductor ceramic plates is relatively fixed, and the overall heat exchange path is singular, failing to meet the higher demands for heat exchange efficiency in high-efficiency heat exchange scenarios. To address these shortcomings, we propose an inclined-insertion electric heating structure. Utility Model Content

[0004] The purpose of this invention is to provide an inclined tube-type electric heating structure to solve the problems mentioned in the background art, such as the current electric heating tubes being arranged horizontally / vertically, with the arrangement density limited by the fixed parallel or perpendicular direction with the semiconductor ceramic plate, which easily leaves flow dead corners, short medium contact time, insufficient heat exchange, low heat exchange ratio per unit volume, and a single heat exchange path, making it difficult to meet the requirements of high efficiency.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] An inclined tube electric heating structure includes an electric heating structure disposed within a heat exchange volume. The electric heating structure includes a fixed plate and electric heating tubes distributed obliquely on the outer wall of the fixed plate. The electric heating tubes are arranged in a cross-spiral manner. The cross-spiral arrangement means that multiple electric heating tubes are inserted at an inclined angle into the outer wall of the fixed plate, and the electric heating tubes are distributed in a spiral cross pattern.

[0007] Preferably, the electric heating tube includes a U-shaped heating tube body, fins for increasing heat conduction, a connecting plate parallel to one side of the heating tube body, a terminal block for connecting the heating wire inside the heating tube body, a first high-temperature ceramic block sealing the outside of the terminal block at the end of the heating tube body, and a terminal nut located on the outer wall of the terminal block on the outer wall of the heating tube body. The fins are evenly distributed on the outer wall of the heating tube body. A connecting ceramic plate is fixedly sleeved on the outside of the two first high-temperature ceramic blocks at the end of the heating tube body. The bottom of the connecting plate parallel to the outside of the fins on one side of the heating tube body is connected to the top of the connecting ceramic plate.

[0008] Preferably, the fixing plate material is a semiconductor ceramic sheet.

[0009] Preferably, the fins are fixedly connected to the outer wall of the heating tube by welding, and the fins are made of a thermally conductive metal material.

[0010] Preferably, the connecting ceramic plate and the first high-temperature ceramic block are bonded and fixed together by a high-temperature resistant adhesive, and the connecting plate and the connecting ceramic plate are integrally formed.

[0011] Preferably, the electric heating tube is inclined at an angle of 30°-60° on the outer wall of the fixed plate, and the spiral cross-distribution of multiple electric heating tubes is arranged at equal or gradually varying intervals along the outer wall of the fixed plate.

[0012] Preferably, the heating element body is made of copper alloy, the terminal is made of high-temperature resistant conductive metal, and the first high-temperature ceramic block is made of alumina ceramic.

[0013] This utility model has the following beneficial effects:

[0014] 1. The inclined insertion electric heating structure of this application is arranged in a cross-spiral pattern. The inclined insertion and spiral cross distribution increase the contact area, reduce the flow dead angle, extend the medium contact time, and improve the heat exchange ratio per unit volume, making it suitable for industrial heating scenarios. The tube body is equipped with heat-conducting metal fins, which are welded and fixed to increase the heat conduction area, enhance heat exchange, and further improve efficiency with the layout.

[0015] 2. The electric heating tube is inserted at an angle into the outer wall of the fixing plate made of semiconductor ceramic plate. Based on the semiconductor characteristics of the fixing plate and the layout of the heating tube, the two are closely combined, which not only ensures the stable installation of the electric heating tube, but also uses the semiconductor ceramic plate to assist in heat conduction, promotes the rational distribution and transfer of heat, and improves the overall stability of the structure and the heat utilization efficiency.

[0016] 3. Compared to traditional electric heating structures, this design breaks through the limitations of direct-insertion layouts, with cross-spiral oblique insertion and fin reinforcement as its core innovation. It achieves technological upgrades in heat exchange efficiency and structural stability, providing a more efficient and reliable solution for industrial heating and media heat exchange, facilitating performance iteration of related equipment, driving technological progress in the industry, reducing energy consumption while improving production efficiency.

[0017] 4. Electric heating structure arrangement: By optimizing the arrangement of electric heating tubes, the contact area between the electric heating tubes and the medium is increased and the heat exchange time of the medium is extended without increasing the overall heat exchange volume, thereby improving the heat exchange ratio per unit volume. Attached Figure Description

[0018] Figure 1 This is a side view of the overall oblique insertion spiral cross-section of this utility model.

[0019] Figure 2 This is a schematic diagram of the electric heating tube and the fixing plate of this utility model being inserted at an angle.

[0020] Figure 3 This is a schematic diagram of the distribution structure of the electric heating tube of this utility model.

[0021] Figure 4 This is a front view of the electric heating tube of this utility model.

[0022] Figure 5 This is a rear view of the electric heating element of this utility model.

[0023] In the diagram: 1. Fixing plate; 2. Electric heating tube; 21. Electric heating tube body; 22. Fin; 23. Connecting plate; 24. Terminal block; 25. First high-temperature ceramic block; 26. Terminal nut; 27. Connecting ceramic plate. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not 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 effort are within the protection scope of the present utility model.

[0025] Please see the appendix Figure 1 - Figure 5As shown, an inclined tube electric heating structure includes an electric heating structure set in a heat exchange volume. The electric heating structure includes a fixed plate (1) and electric heating tubes 2 inclinedly distributed on the outer wall of the fixed plate (1). The fixed plate (1) is made of semiconductor ceramic plate material, which provides the installation foundation and auxiliary heat conduction function for the electric heating tubes 2. The electric heating tubes 2 are arranged in a cross-spiral manner. The cross-spiral arrangement means that multiple electric heating tubes 2 are inserted into the outer wall of the fixed plate (1) at an inclined angle, and each electric heating tube 2 is spirally distributed between them. The cross-spiral arrangement means that multiple electric heating tubes 2 are inserted at an inclined angle of 30-60° and spirally intersected with each other. The distribution spacing can be set at equal intervals or gradually changing along the outer wall of the fixed plate (1).

[0026] The plug-in electric heating structure features a cross-spiral arrangement with inclined insertion and spiral cross distribution, increasing the contact area, reducing flow dead zones, extending the medium contact time, and improving the heat exchange ratio per unit volume, making it suitable for industrial heating scenarios. The tube body is equipped with 22 heat-conducting metal fins, which are welded and fixed to increase the heat conduction area and enhance heat exchange, further improving efficiency with the layout.

[0027] Please see the appendix Figure 1 , Figure 4 and Figure 5 As shown, the electric heating tube 2 includes a U-shaped heating tube body 21, fins 22 for increasing heat conduction, a connecting plate 23 parallel to one side of the heating tube body 21, a terminal 24 connecting the heating wire inside the heating tube body 21, a first high-temperature ceramic block 25 sealing the outside of the terminal 24 at the end of the heating tube body 21, and a terminal nut 26 located on the outer wall of the terminal 24 on the outer wall of the heating tube body 21. The fins 22 are evenly distributed on the outer wall of the heating tube body 21, and a connecting plate 25 is fixedly sleeved on the outside of the two first high-temperature ceramic blocks 25 at the end of the heating tube body 21. The bottom of the connecting plate 23, which is parallel to the outer side of the fins 22 on one side of the heating tube body 21, is connected to the top of the connecting ceramic plate 27. The fins 22 are fixedly connected to the outer wall of the heating tube body 21 by welding. The fins 22 are made of thermally conductive metal. The connecting ceramic plate 27 and the first high-temperature ceramic block 25 are bonded and fixed by high-temperature resistant adhesive. The connecting plate 23 and the connecting ceramic plate 27 are integrally formed. The heating tube body 21 is made of copper alloy. The terminal block 24 is made of high-temperature resistant conductive metal. The first high-temperature ceramic block 25 is made of alumina ceramic.

[0028] The electric heating element 2 consists of a U-shaped heating element body 21, made of copper alloy to ensure thermal conductivity. Fins 22, made of thermally conductive metal, are evenly distributed on the outer wall of the heating element body 21 and are fixed to it by welding to increase the heat transfer area. A connecting plate 23 is parallel to one side of the heating element body 21, with a terminal block 24 running through it. The terminal block 24 is made of high-temperature resistant conductive metal and connects to the heating wire inside the tube. A first high-temperature ceramic block 25, made of alumina ceramic, is used to seal the terminal block 24 at the end of the heating element body 21. This ceramic block is high-temperature resistant and has insulating properties. A terminal nut 26 is provided on the outer wall of the terminal block 24 outside the tube body. Furthermore, a connecting ceramic plate 27 is fixedly fitted over the two first high-temperature ceramic blocks 25 at the end of the tube body. The bottom of the connecting plate 23 is integrally formed with the connecting ceramic plate 27, and the connecting ceramic plate 27 is bonded to the first high-temperature ceramic blocks 25 using a high-temperature resistant adhesive.

[0029] In this embodiment, it should be noted that a connecting plate 23 is arranged parallel to one side of the heating tube body 21. A space for insertion and clamping is reserved between the connecting plate 23 and the fins 22 on the outer wall of the heating tube body 21, so that multiple heating tubes 2 can be arranged in a cross spiral manner and inserted into the outer wall of the fixing plate 1 at an inclined angle. The installation is convenient and the connection is made directly by contact with the ground.

[0030] The electric heating element 2 is inserted at an angle into the outer wall of the fixing plate 1, which is made of semiconductor ceramic sheet material, and the two are tightly connected. On the one hand, the installation structure of the fixing plate 1 ensures that the electric heating element 2 is stably installed; on the other hand, the semiconductor ceramic properties of the fixing plate 1 assist in heat conduction, promote the rational distribution and transfer of heat, and improve the overall thermal efficiency and stability of the structure.

[0031] The electric heating tubes have an inclination angle of 30°-60° and a spiral cross-distribution with equal or gradually varying spacing, allowing for flexible adjustment. The layout can be customized and optimized according to different medium characteristics and heat exchange requirements, enhancing the structure's adaptability to diverse industrial scenarios and ensuring efficient heat exchange even under complex operating conditions.

[0032] Operating Procedure: Utilizing the clamping space reserved between the connecting plate 23 and the fins 22 of the electric heating tube 2, insert the electric heating tube 2 into the corresponding part of the fixing plate 1. According to the design requirements of the cross-spiral arrangement (angle 30°-60°, spacing equal / gradual), align the electric heating tube 2 one by one with the installation position on the outer wall of the fixing plate 1 at an inclined angle, slowly insert and adjust the position so that the electric heating tube 2 is initially fixed on the fixing plate 1 in a spiral cross-layout. If necessary, holes can be drilled on the outer wall of the connecting plate 23 to connect it to the fins 22 with bolts. After completing the electric heating structure of electric heating tube 2 and fixing plate 1, hoist or push the whole structure to the designated installation position in the heat exchange volume, ensuring that the structure does not interfere with the inner wall of the heat exchange volume or other related components such as the medium flow pipeline, and reserve reasonable maintenance and medium flow space. Connect the external power supply cable through the terminal block 24 and terminal nut 26 of the electric heating tube 2. When wiring, strictly distinguish between the phase wire, neutral wire and ground wire. Tighten the terminal nut 26 in accordance with electrical specifications and ensure proper insulation protection, such as by adding an insulating sleeve. Complete the electrical circuit construction of the electric heating structure and put it into use.

[0033] The electric heating structure of this application has high heat exchange efficiency. The cross-spiral oblique insertion layout increases the contact area and reduces dead corners. The fins 22 enhance heat conduction and ensure stable installation. The space reserved between the connecting plate 23 and the fins 22 facilitates installation. The components are reliably connected, highly adaptable, and the angle and spacing are adjustable. The semiconductor ceramic plate assists in heat conduction and is suitable for various working conditions.

[0034] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0035] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A slanted-insertion type electric heating structure, comprising an electric heating structure disposed within a heat exchange volume, the electric heating structure comprising a fixed plate (1) and slanted-insertion electric heating tubes (2) distributed on the outer wall of the fixed plate (1), characterized in that: The electric heating tubes (2) are arranged in a cross-spiral pattern. The cross-spiral arrangement means that multiple electric heating tubes (2) are inserted at an inclined angle into the outer wall of the fixed plate (1), and the electric heating tubes (2) are distributed in a spiral cross pattern.

2. The inclined tube-type electric heating structure according to claim 1, characterized in that: The electric heating tube (2) includes a U-shaped heating tube body (21), fins (22) for increasing heat conduction, a connecting plate (23) parallel to one side of the heating tube body (21), a terminal (24) for connecting the heating wire inside the heating tube body (21), a first high-temperature ceramic block (25) sealing the outside of the terminal (24) at the end of the heating tube body (21), and a terminal nut (26) on the outer wall of the terminal (24) on the outer wall of the heating tube body (21). The fins (22) are evenly distributed on the outer wall of the heating tube body (21). A connecting ceramic plate (27) is fixedly sleeved on the outside of the two first high-temperature ceramic blocks (25) at the end of the heating tube body (21). The bottom of the connecting plate (23) parallel to the outside of the fins (22) on one side of the heating tube body (21) is connected to the top of the connecting ceramic plate (27).

3. The inclined tube-type electric heating structure according to claim 1, characterized in that: The fixing plate (1) is made of semiconductor ceramic sheet.

4. The inclined tube type electric heating structure according to claim 2, characterized in that: The fins (22) are fixedly connected to the outer wall of the heating tube body (21) by welding, and the fins (22) are made of thermally conductive metal.

5. The inclined tube-type electric heating structure according to claim 2, characterized in that: The connecting ceramic plate (27) and the first high-temperature ceramic block (25) are bonded and fixed by high-temperature resistant adhesive, and the connecting plate (23) and the connecting ceramic plate (27) are integrally formed.

6. The inclined tube type electric heating structure according to claim 1, characterized in that: The electric heating tube (2) is inclined and inserted into the outer wall of the fixed plate (1) at an angle ranging from 30° to 60°, and the multiple electric heating tubes (2) are spirally distributed with equal or gradually changing spacing along the outer wall of the fixed plate (1).

7. The inclined tube-type electric heating structure according to claim 2, characterized in that: The heating element body (21) is made of copper alloy, the terminal block (24) is made of high temperature resistant conductive metal, and the first high temperature ceramic block (25) is made of alumina ceramic.

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