Mini electric heating tube

Abstract

The utility model relates to the technical field of electric heating tubes, in particular to a mini-type electric heating tube which comprises a connecting plate, a heat exchange tube is arranged at the bottom of the connecting plate and is of a U-shaped structure, the two ends of the heat exchange tube are both fixed to the bottom of the connecting plate, two supporting columns are further installed at the bottom of the connecting plate and both extend into the heat exchange tube, and the heat exchange tube is fixed to the connecting plate. Containing grooves are formed in the side faces of the two supporting columns, heating resistance wires are arranged in the containing grooves, electrode columns are connected to the top of the connecting plate, the two heating resistance wires are connected with the corresponding electrode columns, and a first arc-shaped heat conduction plate and a second arc-shaped heat conduction plate are arranged on the side face of the heat exchange pipe. The second arc-shaped heat-conducting plate abuts against the end of the first arc-shaped heat-conducting plate. The heating resistance wire can be supported through the supporting columns, then the heat exchange pipe can be wrapped through the first arc-shaped heat conduction plate and the second arc-shaped heat conduction plate, the heat exchange pipe is protected, and the protection effect is improved.

Description

Technical Field

[0001] This utility model relates to the field of electric heating tube technology, and in particular to a mini electric heating tube. Background Technology

[0002] Electric heating tubes are made by inserting spiral heating wires into a seamless tube, filling the gaps with magnesium oxide powder which has good thermal conductivity and insulation, and then shrinking the tube. They are then processed into various shapes required by users. They have simple structure and high thermal efficiency.

[0003] Existing electric heating elements typically have a heating resistance wire directly installed inside the tube. When the heating element is impacted, the internal heating resistance wire is prone to breakage, and the heating element itself is easily damaged, resulting in poor protection. Furthermore, during use, the smooth surface of the heating element leads to a small contact area with the external medium to be heated, resulting in poor heating performance. To address these issues, we propose a miniature electric heating element. Utility Model Content

[0004] The purpose of this invention is to address the aforementioned shortcomings in the existing technology by proposing a miniature electric heating tube.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a mini electric heating tube is designed, including a connecting plate, a heat exchange tube is provided at the bottom of the connecting plate, the heat exchange tube has a "U" shaped structure, and both ends of the heat exchange tube are fixed to the bottom of the connecting plate. Two support columns are also installed at the bottom of the connecting plate, and both support columns extend into the heat exchange tube.

[0006] A receiving groove is provided on the side of each of the two support columns. A heating resistance wire is provided inside the receiving groove, and an electrode column is connected to the top of the connecting plate. Both heating resistance wires are connected to the corresponding electrode column.

[0007] A first arc-shaped heat-conducting plate and a second arc-shaped heat-conducting plate are provided on the side of the heat exchange tube. The end of the second arc-shaped heat-conducting plate abuts against the end of the first arc-shaped heat-conducting plate, and a cavity is formed between the two. The heat exchange tube is located in the cavity.

[0008] Several heat-conducting plates are installed on the outer surfaces of both the first and second arc-shaped heat-conducting plates.

[0009] Preferably, the side of the heating resistance wire extends outside the receiving groove and is clearance-fitted with the inner surface of the heat exchange tube.

[0010] Preferably, both the heating resistance wire and the receiving groove are arranged in a spiral.

[0011] Preferably, the top edges of both the first and second arc-shaped heat-conducting plates are provided with skirts, the top of the skirts are in contact with the bottom of the connecting plate, and a number of mounting holes are provided at the bottom of the skirts. The mounting holes penetrate the skirts, and each mounting hole is provided with a fastening screw. The top of the fastening screw penetrates the mounting hole and extends into the connecting plate and is threaded into the connecting plate.

[0012] Preferably, strip-shaped sealing blocks are installed at both ends of the first arc-shaped heat-conducting plate, and grooves are provided at both ends of the second arc-shaped heat-conducting plate. When the ends of the first arc-shaped heat-conducting plate and the second arc-shaped heat-conducting plate abut against each other, the strip-shaped sealing blocks extend into the corresponding grooves and seal with the grooves.

[0013] Preferably, both the first arc-shaped heat-conducting plate and the second arc-shaped heat-conducting plate are made of copper or stainless steel.

[0014] Preferably, the outer surface of the heat exchange tube is in contact with the inner surfaces of the first arc-shaped heat-conducting plate and the second arc-shaped heat-conducting plate.

[0015] The design scheme proposed in this utility model has the following beneficial effects in application:

[0016] 1. The heating resistance wire can be supported by the support column, and the heat exchange tube can be wrapped by the first arc-shaped heat conduction plate and the second arc-shaped heat conduction plate to protect the heat exchange tube and improve the protection effect.

[0017] 2. The contact area between the heat exchange tube and the external medium can be increased by using the first arc-shaped heat-conducting plate, the second arc-shaped heat-conducting plate, and the heat-conducting fins on the first arc-shaped heat-conducting plate and the second arc-shaped heat-conducting plate, thereby improving the heating effect. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model;

[0019] Figure 2 This is a side sectional view of the heat exchanger tube structure of this utility model;

[0020] Figure 3 This is a top view of the structure of the first and second arc-shaped heat-conducting plates of this utility model.

[0021] In the diagram: 1. Heat exchange tube; 2. Heat-conducting plate; 3. First arc-shaped heat-conducting plate; 4. Skirt; 5. Connecting plate; 6. Electrode post; 7. Second arc-shaped heat-conducting plate; 8. Receiving groove; 9. Support post; 10. Heating resistance wire; 11. Groove; 12. Strip-shaped sealing block; 13. Mounting hole; 14. Fastening screw. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0023] Reference Figures 1-3 A miniature electric heating tube includes a connecting plate 5. A heat exchange tube 1 with a "U"-shaped structure is provided at the bottom of the connecting plate 5, and both ends of the heat exchange tube 1 are fixed to the bottom of the connecting plate 5. Two support columns 9 are also installed at the bottom of the connecting plate 5, and both support columns 9 extend into the heat exchange tube 1. A receiving groove 8 is opened on the side of the two support columns 9, and a heating resistance wire 10 is provided inside the receiving groove 8. An electrode column 6 is connected to the top of the connecting plate 5, and the two heating resistance wires 10 are connected to the corresponding electrode column 6. In actual use, by installing the heating resistance wire 10 in the receiving groove 8, the support columns 9 will protect the heating resistance wire 10, and the heating resistance wire 10 will not break due to external impact on the heat exchange tube 1.

[0024] like Figure 2 As shown, the side of the heating resistance wire 10 extends to the outside of the receiving groove 8 and is fitted with the inner surface of the heat exchange tube 1 with a gap. In this way, the heat generated by the heating resistance wire 10 will be directly transferred to the surface of the heat exchange tube 1, and then transferred to the outside through the heat exchange tube 1 to heat the external medium.

[0025] It should be noted that both the heating resistance wire 10 and the receiving groove 8 are spirally arranged, which can increase the heating area of ​​the heating resistance wire 10 and improve the heating effect.

[0026] like Figure 1 and Figure 3 As shown, a first arc-shaped heat-conducting plate 3 and a second arc-shaped heat-conducting plate 7 are provided on the side of the heat exchange tube 1. The second arc-shaped heat-conducting plate 7 abuts against the end of the first arc-shaped heat-conducting plate 3, and a cavity is formed between them. The heat exchange tube 1 is located in the cavity. In actual use, the first arc-shaped heat-conducting plate 3 and the second arc-shaped heat-conducting plate 7 will block the heat exchange tube 1, so that the heat exchange tube 1 will not be damaged when it is hit by external objects.

[0027] like Figure 1As shown, the top edges of the first arc-shaped heat-conducting plate 3 and the second arc-shaped heat-conducting plate 7 are both provided with skirts 4. The top of the skirts 4 is in contact with the bottom of the connecting plate 5, and several mounting holes 13 are provided at the bottom of the skirts 4. The mounting holes 13 penetrate the skirts 4, and each mounting hole 13 is provided with a fastening screw 14. The top of the fastening screw 14 penetrates the mounting hole 13 and extends into the connecting plate 5 and is threaded into the connecting plate 5. In actual use, the operator installs the first arc-shaped heat-conducting plate 3 and the second arc-shaped heat-conducting plate 7 on the heat exchange tube 1, and then passes the fastening screw 14 through the corresponding mounting hole 13 and tightens it to fix it on the connecting plate 5. This fixes the first arc-shaped heat-conducting plate 3 and the second arc-shaped heat-conducting plate 7 on the surface of the heat exchange tube 1, making it secure.

[0028] like Figure 1 and Figure 3 As shown, several heat-conducting plates 2 are installed on the outer surfaces of the first arc-shaped heat-conducting plate 3 and the second arc-shaped heat-conducting plate 7. The heat-conducting plates 2 can increase the contact area between the first arc-shaped heat-conducting plate 3 and the second arc-shaped heat-conducting plate 7 and the external medium to be heated, thereby improving the heating effect.

[0029] like Figure 3 As shown, strip-shaped sealing blocks 12 are installed at both ends of the first arc-shaped heat-conducting plate 3, and grooves 11 are provided at both ends of the second arc-shaped heat-conducting plate 7. When the ends of the first arc-shaped heat-conducting plate 3 and the second arc-shaped heat-conducting plate 7 abut against each other, the strip-shaped sealing blocks 12 extend into the corresponding grooves 11 and seal with the grooves 11. This seals the gap between the first arc-shaped heat-conducting plate 3 and the second arc-shaped heat-conducting plate 7, so that the first arc-shaped heat-conducting plate 3 and the second arc-shaped heat-conducting plate 7 can completely wrap the heat exchange tube 1 and protect the heat exchange tube 1.

[0030] Specifically, during installation, the operator can wrap the first arc-shaped heat-conducting plate 3 and the second arc-shaped heat-conducting plate 7 around the surface of the heat exchange tube 1, allowing the strip-shaped sealing block 12 to be inserted into the groove 11. Then, the operator passes the fastening screw 14 through the corresponding mounting hole 13 and screws it into the connecting plate 5 to secure the first arc-shaped heat-conducting plate 3 and the second arc-shaped heat-conducting plate 7. During use, the support column 9 supports and protects the heating resistance wire 10, thus protecting the heat exchange tube 1 from external impacts. When in use, the first arc-shaped heat-conducting plate 3 and the second arc-shaped heat-conducting plate 7 protect the heat exchange tube 1, and the heating resistance wire 10 is protected by the support column 9. This can prevent damage to the heating resistance wire 10 and the heat exchange tube 1. In use, the heat generated by the heating resistance wire 10 is transferred to the heat exchange tube 1, and the heat exchange tube 1 then transfers the heat to the first arc-shaped heat-conducting plate 3 and the second arc-shaped heat-conducting plate 7. Then, the external medium is heated by the first arc-shaped heat-conducting plate 3, the second arc-shaped heat-conducting plate 7 and the heat-conducting plate 2, resulting in good heating effect.

[0031] Furthermore, the outer surface of the heat exchange tube 1 is in contact with the inner surfaces of the first arc-shaped heat-conducting plate 3 and the second arc-shaped heat-conducting plate 7. Both the first arc-shaped heat-conducting plate 3 and the second arc-shaped heat-conducting plate 7 are made of copper or stainless steel, or other materials with thermal conductivity. In this way, the heat received by the heat exchange tube 1 from the heating resistance wire 10 will be quickly transferred to the first arc-shaped heat-conducting plate 3 and the second arc-shaped heat-conducting plate 7, and the external medium will be heated through the first arc-shaped heat-conducting plate 3 and the second arc-shaped heat-conducting plate 7.

[0032] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A miniature electric heating element, comprising a connecting plate (5), characterized in that: The bottom of the connecting plate (5) is provided with a heat exchange tube (1), which has a "U" shaped structure. Both ends of the heat exchange tube (1) are fixed to the bottom of the connecting plate (5). Two support columns (9) are also installed at the bottom of the connecting plate (5), and both support columns (9) extend into the heat exchange tube (1). A receiving groove (8) is provided on the side of each of the two support columns (9). A heating resistance wire (10) is provided inside the receiving groove (8), and an electrode column (6) is connected to the top of the connecting plate (5). Both heating resistance wires (10) are connected to the corresponding electrode column (6). A first arc-shaped heat-conducting plate (3) and a second arc-shaped heat-conducting plate (7) are provided on the side of the heat exchange tube (1). The second arc-shaped heat-conducting plate (7) abuts against the end of the first arc-shaped heat-conducting plate (3), and a cavity is formed between them. The heat exchange tube (1) is located in the cavity. Several heat-conducting plates (2) are installed on the outer surfaces of the first arc-shaped heat-conducting plate (3) and the second arc-shaped heat-conducting plate (7).

2. The miniature electric heating tube according to claim 1, characterized in that: The side of the heating resistance wire (10) extends to the outside of the receiving groove (8) and is clearance-fitted with the inner surface of the heat exchange tube (1).

3. A miniature electric heating tube according to claim 2, characterized in that: The heating resistance wire (10) and the receiving groove (8) are both arranged in a spiral.

4. A miniature electric heating tube according to claim 1, characterized in that: The top edges of the first arc-shaped heat-conducting plate (3) and the second arc-shaped heat-conducting plate (7) are both provided with skirts (4). The top of the skirt (4) is in contact with the bottom of the connecting plate (5). Several mounting holes (13) are provided at the bottom of the skirt (4). The mounting holes (13) penetrate the skirt (4). Each mounting hole (13) is provided with a fastening screw (14). The top of the fastening screw (14) penetrates the mounting hole (13) and extends into the connecting plate (5) and is threaded into the connecting plate (5).

5. A miniature electric heating tube according to claim 4, characterized in that: Both ends of the first arc-shaped heat-conducting plate (3) are equipped with strip-shaped sealing blocks (12), and both ends of the second arc-shaped heat-conducting plate (7) are provided with grooves (11). When the ends of the first arc-shaped heat-conducting plate (3) and the second arc-shaped heat-conducting plate (7) abut against each other, the strip-shaped sealing blocks (12) extend into the corresponding grooves (11) and are sealed to the grooves (11).

6. A miniature electric heating tube according to claim 1, characterized in that: Both the first arc-shaped heat-conducting plate (3) and the second arc-shaped heat-conducting plate (7) are made of copper or stainless steel.

7. A miniature electric heating tube according to claim 1, characterized in that: The outer surface of the heat exchange tube (1) is in contact with the inner surface of the first arc-shaped heat-conducting plate (3) and the second arc-shaped heat-conducting plate (7).

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