CN208424825U - A kind of more strand electric heating wires - Google Patents

Abstract

A kind of more strand electric heating wires, it is characterised in that: it includes draught line and the heating wire for being wrapped in its surface, and heating wire and draught line form a heating group, and at least two heating groups are mutually wound heating core, and heating wicking surface is covered with flame-resistant insulation layer.The beneficial effects of the utility model are: 1, structure is simple, production cost is low, improves the market competitiveness.2, it is mutually wound using multiply heating group and is fabricated to heating group, heating group has many advantages, such as that calorific value is big, resists rich song, stretch capability strong.

Description

A kind of more strand electric heating wires

Technical field

The utility model relates to a kind of heating element, specifically a kind of more strand electric heating wires.

Background technique

Electric heating wire is widely used in multiple product due to its excellent performance, such as electric blanket, foot basin, electric cooker, electricity Warmer, automobile cushion, electric heating weight reducing waistband, health care equipment, refrigerator and air conditioner defrosting and freezing defrosting equipment etc..However In actual life, often there is the report that the heating equipments such as electric blanket cause fire, people generate while being widely used Various security risks, and one component of key of motor hot line as heating equipment, continue to further increase its safety Property and reliability, become very urgent.Meanwhile using this kind of product, how to realize that energy-efficient is also urgently to be solved One project.

Utility model content

The purpose of this utility model is to overcome prior art there are the shortcomings that, it is simple to provide a kind of structure, fever effect Rate is high, heater wire good toughness, and the strong one kind of tensile resistance twists electric heating wire.

The utility model aim is realized with the following methods: a kind of more strand electric heating wires, it is characterised in that: it includes leading Lead and the heating wire for being wrapped in its surface, heating wire and draught line form a heating group, and at least two heating groups mutually twine Around heating core is formed, heating wicking surface is covered with flame-resistant insulation layer.

The draught line is glass wire, and heating wire is spirally wound on its surface.

The heating wire is tinned copper wire.

The heating wire is Contra wire.

The heating wire is ni-al alloyed wire.

The flame-resistant insulation layer is silica gel sheath.

The flame-resistant insulation layer is Teflon thin-film covering.

The beneficial effects of the utility model are: 1, structure is simple, production cost is low, improves the market competitiveness.2, using more Stock heating group, which is mutually wound, is fabricated to heating group, and heating group has many advantages, such as that calorific value is big, resists rich song, stretch capability strong.

Detailed description of the invention

FIG. 1 is a schematic structural view of the utility model.

Fig. 2 is heating group structural schematic diagram in the utility model.

Specific embodiment

Specific further instruction is made to the utility model with reference to the accompanying drawing.A kind of more strand electric heating wires, feature exist In: it includes draught line 1 and the heating wire 2 for being wrapped in its surface, and heating wire 2 and draught line 1 form a heating group, and at least two A heating group is mutually wound heating core 3, and 3 surface of heating core is covered with flame-resistant insulation layer 4.

The draught line 1 is glass wire, and heating wire 2 is spirally wound on its surface.

The heating wire 2 is tinned copper wire.

The heating wire 2 is Contra wire.

The heating wire 2 is ni-al alloyed wire.

The flame-resistant insulation layer 4 is silica gel sheath.

The flame-resistant insulation layer 4 is Teflon thin-film covering.

Working principle: in this case, using glass wire as draught line, heating wire is wrapped in by spiral way and is led Wire surface forms heating group.Wherein, in order to increase the later period use when heater wire anti-flexing ability and tensile strength, in this case Screw pitch of the heating wire winding on draught line surface can be increased suitably, so that having enough deformations empty between two adjacent rings heating wire Between, when heating wire winding being avoided closely heating wire to be caused to be bent when in use very much, contact short circuit between two adjacent rings heating wire Or mutual extrusion causes heating wire to damage.

Further: in order to supplement heating wire screw pitch increase after caused heating area, uniformity and power it is inadequate, this case In heating core be at least mutually wound by two heating groups, as shown in Figure 1, mutually being wound in this case with three heating groups For be illustrated.After multiple heating groups are mutually wound, the heating wire in each adjacent two heating group be combined with each other, to increase The heating area of heating core, so that this heating core has calorific value big compared with traditional single core heating wire, fever uniformly, adds The advantages that thermal velocity is fast.In addition, flame-resistant insulation layer is made using silica gel sheath, so that this heater wire is soft, high temperature resistance By force, the advantages that anti-flexing ability is high, therefore can be widely used to promote.

The basic principles and main features of the present invention and the advantages of the present invention have been shown and described above.Current row The technical staff of industry is described in above embodiments and description it should be appreciated that the present utility model is not limited to the above embodiments Only illustrate the principles of the present invention, on the premise of not departing from the spirit and scope of the utility model, the utility model is also It will have various changes and improvements, these various changes and improvements fall within the scope of the claimed invention.

Claims (7)

1. a kind of more strand electric heating wires, it is characterised in that: it includes draught line (1) and the heating wire (2) for being wrapped in its surface, electricity Heated filament (2) and draught line (1) form a heating group, and at least two heating groups are mutually wound heating core (3), heating core (3) surface is covered with flame-resistant insulation layer (4).

2. a kind of more strand electric heating wires according to claim 1, it is characterised in that: the draught line (1) is glass fibers Line is tieed up, heating wire (2) is spirally wound on its surface.

3. a kind of more strand electric heating wires according to claim 1, it is characterised in that: the heating wire (2) is tin-coated copper Silk.

4. a kind of more strand electric heating wires according to claim 1, it is characterised in that: the heating wire (2) is cupro-nickel conjunction Spun gold.

5. a kind of more strand electric heating wires according to claim 1, it is characterised in that: the heating wire (2) is the conjunction of nickel aluminium Spun gold.

6. a kind of more strand electric heating wires according to claim 1, it is characterised in that: the flame-resistant insulation layer (4) is silicon Gum cover.

7. a kind of more strand electric heating wires according to claim 1, it is characterised in that: the flame-resistant insulation layer (4) is iron Fluorine dragon thin-film covering.