CN219372616U

CN219372616U - Low-resistance heating wire with multi-strand parallel wire winding

Info

Publication number: CN219372616U
Application number: CN202223325757.7U
Authority: CN
Inventors: 魏明海; 魏思蒙; 陈余双
Original assignee: Zhongshan Denaji Electric Appliance Technology Co ltd
Current assignee: Zhongshan Denaji Electric Appliance Technology Co ltd
Priority date: 2022-12-09
Filing date: 2022-12-09
Publication date: 2023-07-18
Anticipated expiration: 2032-12-09

Abstract

A low resistance heating wire of a multi-strand parallel wire wrap, comprising: the multiple bundles of glass fiber yarns and at least one first resistance wire are arranged in the same direction to form a core body; at least one strand of second resistance wire is wound around the periphery of the core body and is wound to form a spiral coil shape; a heat-conductive outer skin which absorbs heat of the first and second resistance wires and uniformly transfers the heat to the outside; the number of the first resistance wires is provided with a plurality of resistance wires, and the total resistance value is adjusted by means of parallel connection of a plurality of same or different resistance values. When a plurality of resistance wires with the same or different resistance values of the first resistance wire are used in parallel, the resistance value can be adjusted to be lower and more accurate. The second resistance wire is subjected to precision adjustment according to the design resistance value requirement by the width of the winding pitch, so that a low-resistance heating wire with good thermal stability is obtained; therefore, it has excellent performance in technical, practical and economical aspects.

Description

Low-resistance heating wire with multi-strand parallel wire winding

Technical Field

The utility model relates to a low-resistance heating wire with a plurality of strands of parallel wires.

Background

According to market research and patent retrieval, the heating wire used for heating films, heating pastes and the like is found to be a wire body of a single-wire resistance wire, the heating wire with low resistance is obtained, the original single-wire structure can only use the low-resistance wire with poor heat stability, and the heating wire has the following characteristics: pure copper wire or low-grade copper-nickel alloy wire; the structure is often poor in heat stability, so that power is unstable, an electric appliance cannot be normally used, and the single-resistance wire diameter is subjected to stretching, so that the variation is uneven, heating uniformity is poor, and the technical problems are required to be solved.

Disclosure of Invention

The utility model aims to solve the technical problems of providing a low-resistance heating wire with a plurality of strands of parallel wires, which has the technical advantages of effectively resisting the influence of the change of the wire diameter under tension, effectively preventing wire breakage, heating, uniform heat transfer and the like.

In order to achieve the above purpose, the technical scheme adopted by the utility model is to provide a low-resistance heating wire with a plurality of strands of parallel wires, which comprises the following components:

the multiple bundles of glass fiber yarns and at least one first resistance wire are arranged in the same direction to form a core body;

at least one strand of second resistance wire is wound on the periphery of the core body and is wound to form a spiral coil shape;

a heat-conductive outer skin which absorbs heat of the first and second resistance wires and uniformly transfers the heat to the outside;

the number of the first resistance wires is provided with a plurality of resistance wires, and the total resistance value is adjusted by means of parallel connection of a plurality of same or different resistance values.

In one or more embodiments of the present utility model, the first and second resistance wires are made of any one of copper, nickel, chromium, aluminum and iron.

In one or more embodiments of the present utility model, the heat conductive outer skin is made of a high temperature resistant flexible silica gel or polytetrafluoroethylene material.

In one or more embodiments of the utility model, the thermally conductive skin has a thickness of 0.58mm to 1.08mm.

In one or more embodiments of the present utility model, the size of the spiral pitch around which the second resistance wire is wound adjusts the precision resistance value.

In one or more embodiments of the utility model, the second number of resistance wires is a plurality of bundles, which are arranged in parallel.

Compared with the background technology, the utility model has the following effects: by adopting the technical scheme, the structure of the multi-strand wire winding can use heating wire materials with better thermal stability and higher resistance, such as: a nichrome heating wire or a high-grade copper-nickel alloy heating wire, an iron-chromium-aluminum heating wire and a constantan heating wire; the multi-strand resistance wires are combined in parallel to obtain smaller resistance value, so that the low-resistance heating wire with better heat stability is obtained. Therefore, it has excellent performance in technical, practical and economical aspects.

Drawings

FIG. 1 is a schematic diagram of a low resistance heating wire with multiple parallel windings according to an embodiment of the present utility model;

those skilled in the art will recognize, from the shape, construction and understanding of the arrangements shown in the drawings, the various components of the drawings are not necessarily to scale and the dimensions of the various components and elements of the drawings may be exaggerated or reduced to more clearly illustrate the embodiments of the present utility model described herein.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout.

The orientations shown in the drawings are not to be construed as limiting the specific scope of the utility model, and merely as a reference to the preferred embodiments, variations in the positions or numbers of product components shown in the drawings or structural simplifications may be made.

The terms "connected" and "connected" as used in the specification and illustrated in the drawings refer to the components as being "connected" to each other, and are understood to mean fixedly connected or detachably connected or integrally connected; the connection can be directly connected or connected through an intermediate medium, and a person skilled in the art can understand the connection relation according to specific situations to obtain a mode of screwing or riveting or welding or clamping or embedding and the like to replace different embodiments in a proper mode; the low resistance referred to in the specification is the resistance value of each meter, which is generally understood to be between 0.01 ohm and 10 ohm, and the resistance value of the resistance wire or the heating wire referred to in the specification is particularly the actual resistance value of one meter in length.

Terms of orientation such as up, down, left, right, top, bottom, and the like, as well as orientations shown in the drawings, may be used for direct contact or contact by additional features between the components; such as directly above and obliquely above, or it merely represents above the other; other orientations may be understood by analogy. The technical scheme and the beneficial effects of the utility model are more clear and definite by further describing the specific embodiments of the utility model with reference to the drawings in the specification.

The specific embodiment will be described below with reference to fig. 1, however, those skilled in the art will readily appreciate that the detailed description given herein with respect to these figures is for illustrative purposes only and should not be construed as limiting, and that this embodiment provides a low resistance heating wire of multi-strand parallel wire wrap comprising: the multiple bundles of glass fiber yarns 1 and at least one first resistance wire 2 are arranged in the same direction to form a core body; at least one second resistance wire 3 is wound on the periphery of the core body and is wound to form a spiral coil shape; the heat-conducting outer skin 4 absorbs the heat of the first resistance wire 2 and the second resistance wire 36 and uniformly transfers the heat outwards.

The first resistance wire 2 and the second resistance wire 3 are made of any one or more alloy materials selected from copper, nickel, chromium, aluminum and iron. The heat conduction outer skin 3 is made of high-temperature-resistant flexible silica gel or polytetrafluoroethylene materials. The thickness of the heat conductive outer skin 4 is 0.58mm to 1.08mm. The number of the first resistance wires 2 is plural and the total resistance value is adjusted by means of parallel connection of plural same or different resistance values.

And the size of the spiral interval of the second resistance wire is adjusted to be accurate resistance. The number of the second resistance wires is multiple, and the second resistance wires are arranged in parallel.

In view of the foregoing, and in combination with the accompanying drawings, the following principles are provided:

according to a resistance parallel calculation formula: 1/r=1/r1+1/r2+1/r3+ +1/Rn. (R1..Rn represents n resistors), the resistance of the plurality of strands of the first resistance wire 2, which have the same or different resistance values, can be adjusted to obtain a lower and more accurate resistance value when the resistance wires are used in parallel. The second resistance wire 3 is subjected to precision adjustment according to the design resistance value requirement by the width of the winding pitch, so that a low-resistance heating wire with good thermal stability is obtained; therefore, it has excellent performance in technical, practical and economical aspects.

For purposes of explanation, the foregoing descriptions use specific nomenclature to provide a thorough understanding of the embodiments. However, it will be apparent to one skilled in the art that the specific details are not required in order to practice the embodiments. It will be understood by those skilled in the art that the present utility model is not limited to the particular embodiments described above, but that modifications and substitutions using techniques known in the art on the basis of the present utility model fall within the scope of the present utility model, which is defined by the claims.

Claims

1. A low resistance heating wire of a multi-strand parallel wire wrap, comprising:

2. The multi-strand parallel wire-wound low resistance heating wire according to claim 1, wherein: the first resistance wire and the second resistance wire are made of any one of copper, nickel, chromium, aluminum and iron.

3. The multi-strand parallel wire-wound low resistance heating wire according to claim 2, wherein: the heat-conducting outer skin is made of high-temperature-resistant flexible silica gel or polytetrafluoroethylene materials.

4. A multi-strand parallel wire-wound low resistance heating wire according to claim 3, wherein: the thickness of the heat conducting outer skin is 0.58mm to 1.08mm.

5. The low resistance heating wire of multi-strand parallel wire wrap of claim 4, wherein: and the size of the spiral interval of the second resistance wire is adjusted to be accurate resistance.

6. The low resistance heating wire of multi-strand parallel wire wrap of claim 5, wherein: the number of the second resistance wires is multiple, and the second resistance wires are arranged in parallel.