Anti-interference three-layer heating wire

Abstract

The utility model discloses an anti-interference three-layer heating wire, which sequentially comprises a polyester yarn core wire, a first lead layer, a first insulating layer, a second lead layer, a second insulating layer, a third lead layer and a third insulating layer from inside to outside, and is characterized in that the first lead layer is formed by winding a PTC (Positive Temperature Coefficient) temperature control wire on the surface of the polyester yarn core wire; the second wire layer is formed by winding a large-resistance heating wire on the surface of the first insulating layer, the third wire layer is formed by winding a small-resistance heating wire on the surface of the second insulating layer, the first insulating layer is an NTC insulating layer, and the third insulating layer is a PVC insulating layer; by adopting the structure, the large-resistance heating wire is adopted to realize rapid heating, the temperature control wire and the NTC insulating layer are utilized to control temperature, and the small-resistance heating wire is utilized to preserve heat, so that excessive heating of the heating wire is avoided, and the problem that potential safety hazards such as fire disasters are easy to occur is solved.

Description

Technical Field

[0001] This utility model relates to the field of heating wire technology, specifically to an anti-interference three-layer heating wire. Background Technology

[0002] A heating wire is an 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. Existing heating wires mainly consist of alloy wire wound around an insulator. During use, the heating temperature is difficult to control, and overheating can easily lead to fires and other safety hazards. Utility Model Content

[0003] This invention addresses the shortcomings of existing technologies by providing an anti-interference three-layer heating wire, which can control the temperature of the heating wire and prevent overheating from causing fires or other problems.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] An anti-interference three-layer heating wire comprises, from the inside out, a polyester core wire, 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 PTC temperature control wire wound around the surface of the polyester core wire. The second conductor layer is formed by a high-resistance 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 an NTC insulation layer, and the third insulation layer is a PVC insulation layer. By adopting the above structure, a high-resistance heating wire is used to achieve rapid heating, the temperature is controlled by the temperature control wire and the NTC insulation layer, and the low-resistance heating wire is used for heat preservation, avoiding overheating of the heating wire and solving the problem of potential safety hazards such as fires.

[0006] 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.

[0007] As a preferred embodiment, the anti-interference layer is an aluminum foil layer.

[0008] As a preferred embodiment, the PTC temperature control wire is wound in the opposite direction to the high-resistance heating wire, while the PTC temperature control wire is wound in the same direction as the low-resistance heating wire.

[0009] As a preferred embodiment, the second insulating layer is made of PA, PP or PE material.

[0010] 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.

[0011] 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.

[0012] Compared with the prior art, this utility model has obvious advantages and beneficial effects. Specifically...

[0013] 1. By adopting the above structure, the resistance of the first insulation layer decreases when the temperature rises. The external heating wire control system detects the resistance value and determines the corresponding temperature value, thereby stopping the heating when the set high temperature is reached. This avoids overheating of the heating wire, improves the temperature control performance of the heating wire, and thus prevents fires and other situations, improving the safety of the heating wire.

[0014] 2. By setting a high-resistance heating wire to achieve rapid heating and a low-resistance heating wire to maintain the temperature, energy consumption is reduced while maintaining the heating temperature of the heating wire.

[0015] 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

[0016] Figure 1 This is a schematic diagram of the assembly structure of an embodiment of the present utility model.

[0017] Explanation of reference numerals in the attached diagram:

[0018] 1-Polyester core wire; 2-First conductor layer; 3-First insulation layer;

[0019] 4-Second conductor layer; 5-Second insulation layer; 6-Third conductor layer;

[0020] 7-Anti-interference layer; 8-Third insulating layer. Detailed Implementation

[0021] 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.

[0022] 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.

[0023] like Figure 1 As shown, this utility model discloses an anti-interference three-layer heating wire, which includes, from the inside out, a polyester 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 a PTC temperature control wire wound around the surface of the polyester core wire 1. The second conductor layer 4 is formed by a high-resistance heating wire wound around the surface of the first insulation layer 3. The third conductor layer 6 is formed by a low-resistance heating wire wound around the surface of the second insulation layer 5. The first insulation layer 3 is an NTC insulation layer, and the third insulation layer 8 is a PVC insulation layer. By adopting the above structure, a high-resistance heating wire is used to achieve rapid heating, the temperature is controlled by the temperature control wire and the NTC insulation layer, and the low-resistance heating wire is used for heat preservation, avoiding overheating of the heating wire and solving the problem of potential safety hazards such as fires.

[0024] 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.

[0025] The PTC temperature control wire is wound in the opposite direction to the high resistance heating wire, while the PTC temperature control wire is wound in the same direction as the low resistance heating wire.

[0026] The second insulating layer 5 is made of PA, PP or PE material.

[0027] 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.

[0028] 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.

[0029] In summary, by adopting the above-described structure, the resistance of the first insulation layer 2 decreases when the temperature rises. The external heating wire control system detects the resistance value and determines the corresponding temperature value, thereby intervening to stop heating at the set high temperature, preventing the heating wire from overheating, improving the temperature control performance of the heating wire, and thus preventing fires and other situations, thereby improving the safety of the heating wire. By setting a high-resistance heating wire to achieve rapid heating and a low-resistance heating wire for heat preservation, energy consumption is reduced while maintaining the heating temperature of the heating wire.

[0030] 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. An anti-interference three-layer heating wire, characterized in that: From inside to outside, it comprises polyester silk core line, first wire layer, first insulation layer, second wire layer, second insulation layer, third wire layer and third insulation layer, the first wire layer is PTC temperature control wire winding on the surface of polyester silk core line, the second wire layer is large resistance heating wire winding on the surface of first insulation layer, the third wire layer is small resistance heating wire winding on the surface of second insulation layer, the first insulation layer is NTC insulation layer, and the third insulation layer is PVC insulation layer.

2. The anti-interference three-layer heating wire according to claim 1, characterized in that, The third wire layer and the third insulation layer are provided with an anti-interference layer, and the anti-interference layer is coated on the surface of the third wire layer.

3. The anti-interference three-layer heating wire according to claim 2, characterized in that, The anti-interference layer is an aluminum foil layer.

4. The anti-interference three-layer heating wire according to claim 1, characterized in that, The winding direction of the PTC temperature control wire is opposite to that of the large resistance heating wire, and the winding direction of the PTC temperature control wire is the same as that of the small resistance heating wire.

5. The anti-interference three-layer heating wire according to claim 1, characterized in that, The second insulation layer is made of PA, PP or PE material.

6. The anti-interference three-layer heating wire according to claim 1, characterized in that, The thickness of the first insulation layer is 0.20-0.51 mm, the thickness of the second insulation layer is 0.20-0.51 mm, and the thickness of the third insulation layer is 0.30-0.76 mm.

7. The anti-interference three-layer heating wire according to claim 1, characterized in that, The wire diameter of the first wire layer is 0.05-0.25 mm, the wire diameter of the second wire layer is 0.05-0.25 mm, and the wire diameter of the third wire layer is 0.05-0.30 mm.

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