Miniature electric heating tube for small household appliances

Abstract

The utility model discloses a miniature electric heating tube for small household appliances, which comprises a tube body, an end cover is arranged at the open end of the tube body, an insulating support rod is arranged at one end, facing the tube body, of the end cover, an electric heating wire is arranged on the insulating support rod, an insulating filler is arranged in a gap between the electric heating wire and the inner wall of the tube body, and the insulating filler is arranged in the gap between the electric heating wire and the inner wall of the tube body. Two ends of the heating wire are respectively connected with two pins, two through holes are arranged on the end cover, and one ends of the two pins respectively extend out of the two through holes. The electric heating tube has the advantages that the electric heating wire is wound on the insulating supporting rod, electric isolation is achieved, short circuit caused by direct contact between the electric heating wire and the tube body is prevented, and safety is improved. A gap between the heating wire and the inner wall of the tube body is filled with an insulating material, so that the insulating property is enhanced and element wear caused by vibration is reduced. Compared with a traditional miniature electric heating tube, the miniature electric heating tube with the optimized structural design has the advantage that the safety and the stability are effectively improved.

Description

Technical Field

[0001] This utility model belongs to the field of electric heating element technology, specifically relating to a miniature electric heating tube for small household appliances. Background Technology

[0002] With the improvement of people's living standards, small household appliances have been widely used in daily life. As the core heating component of small household appliances, the performance of miniature electric heating tubes directly affects the heating efficiency, service life, and safety of these appliances.

[0003] Currently, there are some shortcomings in the miniature heating elements on the market. For example, some heating elements have unreasonable structural designs, low safety, and are prone to damage during long-term use, seriously affecting their service life. In addition, the sealing measures at the connection between the end cap and the pin in existing miniature heating elements are often not perfect. The ingress of external moisture and impurities can further corrode the internal components of the heating element and even cause safety hazards.

[0004] Therefore, there is an urgent need to provide a miniature electric heating tube for small household appliances to solve the problems mentioned in the background art. Utility Model Content

[0005] The purpose of this invention is to provide a miniature electric heating tube for small household appliances, in order to solve the technical problems of some electric heating tubes having unreasonable structural design and often inadequate sealing measures.

[0006] To solve the above-mentioned technical problems, this utility model provides a miniature electric heating tube for small household appliances, comprising: a tube body, an end cap at the open end of the tube body, an insulating support rod at the end of the end cap facing the tube body, a heating wire on the insulating support rod, an insulating filler in the gap between the heating wire and the inner wall of the tube body, two leads connected to the two ends of the heating wire, two through holes on the end cap, and one end of each of the two leads extending from the two through holes.

[0007] As a further explanation, the inner wall of the through hole is provided with an elastomer, and the pin is provided with sealant at the through hole opening at the outer end of the end cap.

[0008] As further explained, the end cap is fixed to one end of the tube body by welding, and both the tube body and the end cap are made of metal materials with high thermal conductivity.

[0009] As further explained, the heating wire is tightly wound in a spiral shape on an insulating support rod, and the heating wire is made of a high resistivity alloy material.

[0010] Compared with the prior art, the beneficial effects of this utility model are:

[0011] 1. The end cap is connected to the tube body via welding, forming an integrated structure that eliminates the potential loosening issues associated with traditional connection methods and enhances structural stability. Both the tube body and end cap are made of metals with high thermal conductivity (such as copper and aluminum) to ensure rapid heat transfer to the heating medium, while also improving high-temperature resistance and preventing safety hazards caused by localized overheating. The heating wire is wound around an insulating support rod, achieving electrical isolation and preventing short circuits caused by direct contact between the heating wire and the tube body, thus improving safety. The gap between the heating wire and the inner wall of the tube is filled with insulating material (such as magnesium oxide powder) to further enhance insulation performance and fix the position of the heating wire, reducing component wear caused by vibration. Through the optimized structural design of this utility model, both safety and stability are effectively improved compared to traditional miniature electric heating tubes.

[0012] 2. An elastomer is installed on the inner wall of the through-hole, which can tightly fit the pins to form a dynamic seal, effectively preventing moisture and impurities from seeping in through the gap between the pins and the through-hole, thus avoiding corrosion of internal components. Sealant is applied to the through-hole opening at the outer end of the end cap, further strengthening the seal at the connection between the end cap and the pins, forming a secondary protective barrier and significantly improving overall sealing performance. This double-sealing structure completely solves the problem of inadequate sealing measures in existing technologies, fundamentally reducing the risk of moisture and corrosion to internal components and significantly extending the service life of the heating element.

[0013] 3. The heating wire is tightly wound in a spiral shape, increasing the heating area, improving heat exchange efficiency, and shortening heating time. The use of a high-resistivity alloy (such as nickel-chromium alloy) reduces current demand at the same power, minimizes line losses, and improves high-temperature resistance and oxidation resistance, ensuring long-term efficient operation.

[0014] Other features and advantages of this invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objectives and other advantages of this invention are realized and obtained through the structures particularly pointed out in the description and the accompanying drawings.

[0015] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0016] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0017] Figure 1This is a preferred three-dimensional structural diagram of the present invention;

[0018] Figure 2 yes Figure 1 A schematic diagram of the structure at point A in the middle.

[0019] In the picture:

[0020] 1. Tube body, 2. End cap, 3. Insulating support rod, 4. Heating wire, 5. Pin, 6. Insulating filler, 7. Through hole, 8. Elastomer, 9. Sealant. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0022] Reference Figure 1-2 A miniature electric heating tube for small household appliances includes: a tube body 1, with an end cap 2 at the open end of the tube body 1, providing a closed structure to improve the reliability of the device; an insulating support rod 3 is provided at the end of the end cap 2 facing the tube body 1, and an electric heating wire 4 is provided on the insulating support rod 3. The insulating support rod 3 provides electrical isolation, preventing the electric heating wire 4 from directly contacting the tube body 1 and causing a short circuit, thus improving safety; an insulating filler 6 is provided in the gap between the electric heating wire 4 and the inner wall of the tube body 1, which can further enhance the insulation performance and fix the position of the electric heating wire 4, reducing component wear caused by vibration; two pins 5 are respectively connected to both ends of the electric heating wire 4, and two through holes 7 are provided on the end cap 2. One end of each of the two pins 5 extends out from the two through holes 7, and the two pins 5 are used to connect to an external power source to form a complete electrical path; through the optimized design of each component of this utility model, the safety and stability are effectively improved compared with traditional miniature electric heating tubes.

[0023] like Figure 2 As shown, the inner wall of the through-hole 7 is provided with an elastomer 8, and the pin 5 is provided with sealant 9 at the opening of the through-hole 7 at the outer end of the end cap 2. Utilizing its elastic deformation properties, the sealant 8 tightly wraps around the pin 5, forming a dynamic seal; simultaneously, the sealant 9 is filled at the outer end of the through-hole 7, forming a rigid sealing layer after curing. This double-seal protection effectively isolates moisture and impurities from intrusion, prevents oxidation and corrosion of internal components, and extends service life.

[0024] like Figure 1As shown, end cap 2 is fixed to one end of tube body 1 by welding. Both tube body 1 and end cap 2 are made of metal material with high thermal conductivity. The welding process forms a metallurgical bond, eliminating mechanical connection gaps and stress concentration at the connection point. The pressure resistance is superior to threaded or snap-fit ​​connections. The high thermal conductivity of the metal material accelerates heat transfer, reduces energy consumption, and improves the high-temperature resistance of tube body 1 and end cap 2.

[0025] like Figure 1 As shown, the heating wire 4 is tightly wound in a spiral shape around the insulating support rod 3. The heating wire 4 is made of a high-resistivity alloy material. The heating wire 4 converts electrical energy into heat energy through the principle of resistance heating, and the spiral shape increases the heat transfer area. The high-resistivity alloy generates more heat under the same current, improving heating efficiency; moreover, its excellent oxidation resistance and creep resistance extend the service life of the heating wire 4.

[0026] In summary, this miniature electric heating tube, through structural innovation and material optimization, systematically solves the pain points of existing technologies, such as unreasonable structural design, poor sealing, low safety, and short lifespan, providing a reliable heating solution for the small household appliance industry.

[0027] All components selected in this application (parts whose specific structures are not described) are general standard parts or parts known to those skilled in the art, and their structures and principles can be obtained by those skilled in the art through technical manuals.

[0028] This knowledge can be obtained through conventional experimental methods.

[0029] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0030] In addition, in the various embodiments of this utility model, each functional unit can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit.

[0031] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A micro-heating tube for a small household appliance, characterized in that, include: The tube body (1) has an end cap (2) at its open end. An insulating support rod (3) is provided on the end of the end cap (2) facing the tube body (1). An electric heating wire (4) is provided on the insulating support rod (3). An insulating filler (6) is provided in the gap between the electric heating wire (4) and the inner wall of the tube body (1). Two pins (5) are connected to both ends of the electric heating wire (4). Two through holes (7) are provided on the end cap (2). One end of each of the two pins (5) extends out from the two through holes (7).

2. A miniature electric heating tube for small household appliances as described in claim 1, characterized in that, The inner wall of the through hole (7) is provided with an elastomer (8), and the pin (5) is provided with sealant (9) at the opening of the through hole (7) at the outer end of the end cap (2).

3. A miniature electric heating tube for small household appliances as described in claim 1, characterized in that, The end cap (2) is fixed to one end of the tube body (1) by welding. Both the tube body (1) and the end cap (2) are made of metal materials with high thermal conductivity.

4. A miniature electric heating tube for small household appliances as described in claim 1, characterized in that, The heating wire (4) is tightly wound in a spiral shape on the insulating support rod (3), and the heating wire (4) is made of a high resistivity alloy material.

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