Three-layer heating wire capable of rapidly heating and shielding

Abstract

The utility model discloses a three-layer heating wire capable of rapidly heating and shielding, which sequentially comprises a bulletproof wire core wire, a first conductor layer, a first insulating layer, a second conductor layer, a second insulating layer, a third conductor layer and a third insulating layer from inside to outside, the first conductor layer is formed by winding a first PTC heating wire on the surface of the bulletproof wire core wire, and the second conductor layer is formed by winding a second PTC heating wire on the surface of the bulletproof wire core wire. The first conducting wire layer is formed by winding a first PTC heating wire on the surface of the first insulating layer, the second conducting wire layer is formed by winding a second PTC heating wire on the surface of the first insulating layer, the third conducting wire layer is formed by winding a small-resistance heating wire on the surface of the second insulating layer, the first insulating layer is a high-temperature-resistant insulating layer, and the third insulating layer is a high-temperature-resistant PVC insulating layer. By adopting the two PTC heating wires and utilizing the characteristic that the higher the temperature of the PTC heating wires is, the higher the resistance is, and the faster the heating is, the two PTC heating wires influence each other, so that the rapid heating is realized, and the problem of low initial heating efficiency of the existing heating wires is solved.

Description

Technical Field

[0001] This utility model relates to the field of heating wire technology, specifically to a shielded three-layer heating wire that can heat up quickly. Background Technology

[0002] A heating wire is a type of electrical wire structure that uses an alloy wire inside the wire to generate heat by passing electricity through it. Heating wires can be used in household appliances that require heating, such as fleece-lined electric blankets.

[0003] In actual use, existing heating wires start to heat up after being powered on, but it takes a long time for them to reach a certain heating temperature to meet heating needs, resulting in low initial heating efficiency. Utility Model Content

[0004] This invention addresses the shortcomings of existing technologies by providing a shielded, three-layer heating wire that can heat up quickly, thereby improving the heating efficiency of the wire.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A shielded, rapidly heating three-layer heating wire comprises, from the inside out, a bulletproof wire core, a first conductor layer, a first insulation layer, a second conductor layer, a second insulation layer, a third conductor layer, and a third insulation layer. The first conductor layer consists of a first PTC heating wire wound around the surface of the bulletproof wire core. The second conductor layer consists of a second PTC heating wire wound around the surface of the first insulation layer. The third conductor layer consists of a low-resistance heating wire wound around the surface of the second insulation layer. The first insulation layer is a high-temperature resistant insulation layer, and the third insulation layer is a high-temperature resistant PVC insulation layer. By employing two PTC heating wires, utilizing the characteristic that higher temperature results in higher resistance and faster heating, the two PTC heating wires influence each other, achieving rapid heating and solving the problem of low initial heating efficiency in existing heating wires.

[0007] As a preferred embodiment, an anti-interference layer is provided between the third conductor layer and the third insulation layer, and the anti-interference layer covers the surface of the third conductor layer.

[0008] As a preferred embodiment, the anti-interference layer is an aluminum foil layer.

[0009] As a preferred embodiment, the winding direction of the first PTC heating wire is opposite to that of the second PTC heating wire, and the winding direction of the first PTC heating wire is the same as that of the low-resistance heating wire.

[0010] As a preferred embodiment, the second insulating layer is made of PA, PP or PE material.

[0011] As a preferred embodiment, the thickness of the first insulating layer is 0.20-0.51 mm; the thickness of the second insulating layer is 0.20-0.51 mm; and the thickness of the third insulating layer is 0.30-0.76 mm.

[0012] As a preferred embodiment, the wire diameter of the first conductor layer is 0.05-0.25mm; the wire diameter of the second conductor layer is 0.05-0.25mm; and the wire diameter of the third conductor layer is 0.05-0.30mm.

[0013] Compared with the prior art, this utility model has obvious advantages and beneficial effects. Specifically...

[0014] 1. By using two PTC heating wires, the higher the temperature of the PTC heating wire, the higher the resistance and the faster the heating. The two PTC heating wires influence each other to achieve rapid heating, improve the heating efficiency of the heating wires, and reduce the waiting time for heating.

[0015] 2. By setting a high-temperature resistant insulation layer and a high-temperature resistant PVC insulation layer, the high-temperature resistance of the heating wire can be improved, safety hazards can be reduced, and the safety of the heating wire in use can be guaranteed.

[0016] To more clearly illustrate the structural features, technical means, and specific objectives and functions achieved by this utility model, the following detailed description is provided in conjunction with the accompanying drawings and specific embodiments: Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the assembly structure of an embodiment of the present utility model;

[0018] Explanation of reference numerals in the attached diagram:

[0019] 1. Bulletproof wire core; 2. First conductor layer; 3. First insulation layer;

[0020] 4. Second conductor layer; 5. Second insulation layer; 6. Third conductor layer;

[0021] 7. Anti-interference layer; 8. Third insulation layer. Detailed Implementation

[0022] In the description of this utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the position or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0023] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0024] like Figure 1 As shown, this utility model discloses a shielded three-layer heating wire capable of rapid heating. From the inside out, it comprises a bulletproof core wire 1, a first conductor layer 2, a first insulation layer 3, a second conductor layer 4, a second insulation layer 5, a third conductor layer 6, and a third insulation layer 8. The first conductor layer 2 is formed by winding a first PTC heating wire around the surface of the bulletproof core wire 1. The second conductor layer 4 is formed by winding a second PTC heating wire around the surface of the first insulation layer 3. The third conductor layer 6 is formed by winding a low-resistance heating wire around the surface of the second insulation layer 5. The first insulation layer 3 is a high-temperature resistant insulation layer, and the third insulation layer 8 is a high-temperature resistant PVC insulation layer. By employing two PTC heating wires, utilizing the characteristic that higher temperature results in higher resistance and faster heating, the two PTC heating wires influence each other, achieving rapid heating and solving the problem of low heating efficiency in existing heating wires.

[0025] An anti-interference layer 7 is provided between the third conductor layer 6 and the third insulation layer 8. The anti-interference layer 7 covers the surface of the third conductor layer 6. The anti-interference layer 7 is an aluminum foil layer. By providing the anti-interference layer 7, the heating wire can have anti-interference capability.

[0026] The first PTC heating wire is wound in the opposite direction to the second PTC heating wire, and the first PTC heating wire is wound in the same direction as the small resistance heating wire.

[0027] The second insulating layer 5 is made of PA, PP or PE material.

[0028] The thickness of the first insulating layer 3 is 0.20-0.51 mm; the thickness of the second insulating layer 5 is 0.20-0.51 mm; and the thickness of the third insulating layer 8 is 0.30-0.76 mm.

[0029] The wire diameter of the first conductor layer 2 is 0.05-0.25mm; the wire diameter of the second conductor layer 4 is 0.05-0.25mm; and the wire diameter of the third conductor layer 6 is 0.05-0.30mm.

[0030] In summary, this utility model utilizes two PTC heating wires, taking advantage of the characteristic that the higher the temperature of the PTC heating wire, the higher its resistance and the faster the heating. The two PTC heating wires influence each other, achieving rapid heating, improving the heating efficiency of the heating wires, and reducing the waiting time for heating. By setting high-temperature resistant insulation layers and high-temperature resistant PVC insulation layers, the high-temperature resistance of the heating wires can be improved, reducing safety hazards and ensuring the safety of the heating wires in use.

[0031] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model. Therefore, any modifications, equivalent substitutions, improvements, etc., made to the above embodiments based on the actual technical aspects of the present utility model shall still fall within the scope of the technical solution of the present utility model.

Claims

1. A three-layer heating wire capable of rapid heating and having a shield, characterized in that: From the inside out, it includes a bulletproof wire core, a first conductor layer, a first insulation layer, a second conductor layer, a second insulation layer, a third conductor layer, and a third insulation layer. The first conductor layer is formed by a first PTC heating wire wound around the surface of the bulletproof wire core. The second conductor layer is formed by a second PTC heating wire wound around the surface of the first insulation layer. The third conductor layer is formed by a low-resistance heating wire wound around the surface of the second insulation layer. The first insulation layer is a high-temperature resistant insulation layer, and the third insulation layer is a high-temperature resistant PVC insulation layer. An anti-interference layer is provided between the third conductor layer and the third insulation layer, and the anti-interference layer covers the surface of the third conductor layer. ​ 2. The three-layer heating wire according to claim 1, characterized in that, The anti-interference layer is an aluminum foil layer.

3. The three-layer heating wire according to claim 1, characterized in that, The first PTC heating wire is wound in the opposite direction to the second PTC heating wire, and the first PTC heating wire is wound in the same direction as the small resistance heating wire.

4. The three-layer heating wire according to claim 1, wherein The second insulating layer is made of PA, PP or PE material.

5. The three-layer heating wire according to claim 1, wherein The thickness of the first insulating layer is 0.20-0.51 mm; the thickness of the second insulating layer is 0.20-0.51 mm; and the thickness of the third insulating layer is 0.30-0.76 mm.

6. The three-layer heat generating wire according to claim 1, wherein The wire diameter of the first conductor layer is 0.05-0.25mm; the wire diameter of the second conductor layer is 0.05-0.25mm; and the wire diameter of the third conductor layer is 0.05-0.30mm.

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