Flat plate type silicon carbide heating element

Abstract

The utility model discloses a flat plate type silicon carbide heating element which comprises a silicon carbide base body of a flat plate type structure, the silicon carbide base body is formed through a mold or preformed, external power source point positions are arranged at the two ends of the silicon carbide base body in a welding mode, and the number of welding openings is not more than two. The silicon carbide substrate supports 380V three-phase, 220V single-phase or multi-phase power supply connection; compared with the prior art, the flat plate type silicon carbide substrate has the advantages that the flat plate type silicon carbide substrate adopts a flat plate type structure and a plane type structure, and compared with a traditional linear heating mode, the flat plate type silicon carbide substrate can more effectively and uniformly distribute a thermal field, avoids a local overheating or supercooling phenomenon, improves the heating efficiency and improves the heating quality. The number of the welding ports at the two ends of the silicon carbide base body is not more than two, the external power source point position adopts the integrated wiring terminal, no additional welding port exists, and the sparking fault risk caused by too many welding ports and wiring point positions is greatly reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to resistance heating element technical field, concretely is a kind of flat plate type silicon carbide heating element applied to the inside of electric furnace or kiln, for providing uniform heat source for heated object or space. BACKGROUND

[0002] In the field of industrial heating and heat treatment, silicon carbide heating element is widely used due to its excellent high-temperature resistance, oxidation resistance and high thermal conductivity. In the prior art, silicon carbide heating element is mostly in rod or tube structure, which has many defects that are difficult to overcome. First, the linear heating mode makes the heat distribution uneven in the heating area, making it difficult to form a uniform heat field, which seriously affects the heating quality and efficiency, and cannot meet the process requirements of high temperature uniformity. Secondly, in actual application scenarios, multiple silicon carbide heating elements are often used in combination to achieve the required heating power. However, due to manufacturing process and other factors, there is a power difference between the elements, which further exacerbates the temperature field fluctuation, resulting in a large temperature deviation at different positions in the heating area, affecting the product processing quality. Thirdly, to achieve power connection, traditional rod or tube silicon carbide heating elements have many welding interfaces and wiring points, which not only increases the complexity of installation, but also easily causes sparking failure due to poor contact and other problems, posing a great safety hazard. In addition, heat is also lost through external wiring, causing energy waste and significantly reducing the overall energy efficiency of the heating system. Therefore, there is an urgent need to design a new type of silicon carbide heating element to solve the problems of uneven temperature field, large power difference in combination, high risk of sparking and low energy efficiency in the prior art. SUMMARY

[0003] (I) Technical problem

[0004] The utility model provides a flat plate type silicon carbide heating element to solve the problems of uneven temperature field, large power difference in combination, high risk of sparking and low energy efficiency of existing rod or tube silicon carbide heating elements.

[0005] (II) Technical content

[0006] To solve the above technical problems, the technical solution of the utility model is as follows: a flat plate type silicon carbide heating element, including a flat plate type silicon carbide base, the silicon carbide base is formed by mold or prefabricated, the silicon carbide base is welded with external power supply points at both ends, and the number of welding interfaces is not more than two, the silicon carbide base supports 380V three-phase, 220V single-phase or multi-phase power supply connection; the installation mode of the silicon carbide base includes side hanging, flat laying or suspension fixing.

[0007] Further, the surface of the silicon carbide base is designed as an "arch" type meandering structure to evenly distribute the heat field.

[0008] Further, the silicon carbide substrate is sintered from silicon carbide material, and the internal resistance distribution is uniform.

[0009] Further, when the plurality of silicon carbide substrates are used in combination, a composite heating module is formed by parallel or series connection.

[0010] Further, the external power supply point uses an integrated wiring terminal, without additional welding interface.

[0011] (Three) technical effects

[0012] Compared with the prior art, the utility model has the advantages of:

[0013] 1. The thermal field uniformity is significantly improved: the flat plate type silicon carbide substrate adopts a flat plate structure, and the plane structure can more effectively and uniformly distribute the thermal field compared with the traditional linear heating mode, avoiding local overheating or overcooling phenomenon, meeting the process demand of high temperature uniformity requirement, and significantly improving the heating quality and efficiency.

[0014] 2. Performance optimization of combination use: a plurality of silicon carbide substrates can form a composite heating module by parallel or series connection, and the internal resistance distribution is uniform, overcoming the temperature field fluctuation problem caused by power difference when the existing elements are used in combination, ensuring the temperature consistency in the heating area, and improving the stability of product processing quality.

[0015] 3. Safety performance is enhanced: the number of welding interfaces at both ends of the silicon carbide substrate is not more than two, and the external power supply point uses an integrated wiring terminal, without additional welding interface, greatly reducing the risk of sparking failure caused by too many welding interfaces and wiring points, reducing safety hazards, and ensuring stable operation of the equipment.

[0016] 4. Energy efficiency is significantly improved: the optimized structure design reduces the heat loss through external wiring, and the uniform thermal field distribution makes the heat more efficiently act on the heating object, compared with the traditional structure, effectively improving the overall energy efficiency of the heating system, reducing energy consumption and use cost. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 is a three-dimensional structure schematic of the flat plate type silicon carbide heating element of the utility model Figure 1 .

[0018] Figure 2 is a three-dimensional structure schematic of the flat plate type silicon carbide heating element of the utility model Figure 2 .

[0019] Figure 3 is a front view structure schematic of the flat plate type silicon carbide heating element of the utility model.

[0020] As shown in the figure: 1, silicon carbide base; 2, external power point. DETAILED DESCRIPTION

[0021] In the description of the utility model, it also needs to be explained that, unless there is explicit provision and limitation, the terms "provided with", "installed", "connected", "connected" and the like should be broadly understood, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrally connected, it can be mechanically connected, or it can be electrically connected, it can be directly connected, or it can be indirectly connected through an intermediate medium, it can be the communication between two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0022] The utility model will be further described in detail below in combination with the drawings, wherein the silicon carbide base 1 adopts "arch" type meandering structure.

[0023] In combination with the drawings Figure 1 to the drawings Figure 3 , the flat plate type silicon carbide heating element comprises a flat plate type silicon carbide base 1, the silicon carbide base 1 is formed by moulding or prefabricated, the silicon carbide base 1 is provided with external power point 2 at both ends and is welded, and the number of welding interfaces is not more than two, the silicon carbide base 1 supports 380V three-phase, 220V single-phase or multi-phase power supply connection, the installation mode of the silicon carbide base 1 includes side hanging, flat laying or suspension fixing.

[0024] The surface of the silicon carbide base 1 is designed as "arch" type meandering structure to uniformly distribute the heat field, the silicon carbide base 1 is sintered from silicon carbide material, and the internal resistance is uniformly distributed, when a plurality of silicon carbide bases 1 are combined, the composite heating module is formed by parallel or series connection, the external power point 2 adopts integrated wiring terminal, and there is no additional welding interface.

[0025] The working principle of the utility model is as follows: the flat plate type silicon carbide heating element takes silicon carbide base 1 as the core heating component, and the silicon carbide material has good electrical properties and high temperature resistance. When the external power supply supplies power to the silicon carbide base 1 through the external power supply point 2 (380V three-phase, 220V single-phase or multi-phase power supply connection is supported), the current flows in the silicon carbide base 1, and heat is generated by utilizing the resistance characteristics of the silicon carbide material itself. Because the internal resistance of the silicon carbide base 1 is uniformly distributed, it can ensure that the heat is uniformly generated; at the same time, the surface "arch" type meandering structure design prolongs the heat conduction path, so that the heat is more evenly diffused in the heating area, thereby realizing uniform heat field distribution. A plurality of silicon carbide bases 1 can be combined in parallel or series, and the total resistance and power can be adjusted according to actual requirements to form a composite heating module to meet the power requirements of different heating scenes. The external power supply point 2 adopts an integrated wiring terminal to ensure stable current transmission and reduce energy loss and safety hazards caused by poor contact.

[0026] The working process of the utility model is as follows:

[0027] 1. Installation preparation: according to the actual use scene and equipment requirements, select the appropriate installation mode (side hanging, flat laying or suspension fixing), and fix the silicon carbide base 1 in the predetermined position.

[0028] 2. Circuit connection: connect the silicon carbide base 1 with the external power supply through the external power supply point 2, and select 380V three-phase, 220V single-phase or multi-phase power supply mode according to the required power and power supply conditions. If multiple silicon carbide bases 1 need to be combined, connect each silicon carbide base 1 in parallel or series according to the design requirements to form a composite heating module, and then connect the power supply through the external power supply point 2.

[0029] 3. Start heating: after connecting the power supply, the current flows into the silicon carbide base 1 through the external power supply point 2, and heat is generated by utilizing the resistance characteristics of the silicon carbide base 1.

[0030] 4. Uniform heat dissipation: because the internal resistance of the silicon carbide base 1 is uniform, the heat is uniformly generated, and the surface "arch" type meandering structure promotes the uniform diffusion of heat in the heating area, forming a uniform heat field to heat the surrounding objects.

[0031] 5. Continuous operation and monitoring: during the equipment operation process, the heating power and temperature can be controlled by adjusting the power supply voltage, current or the number of combined silicon carbide bases 1 according to the actual heating requirements. At the same time, the equipment operation state is monitored in real time to ensure that the external power supply point 2 is stably connected, there is no abnormal phenomenon such as sparking and overheating, and the equipment is safely and efficiently operated.

[0032] It should be noted that the silicon carbide substrate 1 is formed by a mold or preformed, and can be cut into different shapes to adapt to the heating environment. The "arch" type serpentine structure in this embodiment is only one of them.

[0033] The above describes the present application and its embodiments, which is not restrictive, and the drawings shown is only one of the embodiments of the present application, and the actual structure is not limited thereto. In summary, if a person skilled in the art is inspired, without departing from the creative purpose of the present application, without creative design, similar structure and embodiments to the technical solution, which should belong to the protection scope of the present application.

Claims

1. A flat plate type silicon carbide heating element comprising a flat plate type silicon carbide substrate (1), characterized in that: The silicon carbide base (1) is formed by a mold or preformed, both ends of the silicon carbide base (1) are welded with external power supply points (2), the number of welding interfaces is not more than two, the silicon carbide base (1) supports 380V three-phase, 220V single-phase or multi-phase power supply connection; the mounting mode of the silicon carbide base (1) includes side hanging, paving or suspension fixing.

2. The flat plate type silicon carbide heating element according to claim 1, characterized by: The surface of the silicon carbide base (1) is designed as an "arch" type meandering structure to uniformly distribute the heat field.

3. The flat plate SiC heating element according to claim 1, characterized by: The silicon carbide base (1) is sintered from silicon carbide material, and the internal resistance is uniformly distributed.

4. The flat plate SiC heating element according to claim 1, characterized by: When a plurality of the silicon carbide bases (1) are used in combination, a composite heating module is formed by parallel or series connection.

5. The flat plate SiC heating element according to claim 1, characterized by: The external power supply point (2) adopts an integrated wiring terminal without additional welding interface.

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