CN2117684U - Temp. controlled and flame retarded electric heating cord - Google Patents
Temp. controlled and flame retarded electric heating cord Download PDFInfo
- Publication number
- CN2117684U CN2117684U CN 92215418 CN92215418U CN2117684U CN 2117684 U CN2117684 U CN 2117684U CN 92215418 CN92215418 CN 92215418 CN 92215418 U CN92215418 U CN 92215418U CN 2117684 U CN2117684 U CN 2117684U
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- heating wire
- cord
- heating
- electric heating
- flame retarded
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Abstract
The utility model relates to a temperature controlled and flame retarded electric heating cord, which belongs to an electrothermal element. The utility model is characterized in that the temperature controlled and flame retarded electric heating cord comprises a heating cord wound on an outer surface of the central insulating filament, a low-melting-point insulating layer covered on the heating cord, a resistance temperature sensing cord wound on the outer surface of the temp. Controlled and flame retarded electric heating cord and an outer insulating layer covered on the outer surface of the temperature controlled and flame retarded electric heating cord, wherein, the winding direction of the resistance temperature sensing cord is opposite to the winding direction of the heating cord. The utility model has the advantages of heatable property, constant temperature keeping, flame retardancy, high safety, convenient operation, low cost, etc. The temperature controlled and flame retarded electric heating cord can be used for flexible heating appliances, such as electric heating blanket, electrical hot compresses, etc., and the temperature controlled and flame retarded electric heating cord can also be used for the flue heating and abnormal body heating in the technical fields of industry, medical science, etc.
Description
The utility model belongs to a kind of electric heating element, further is a kind of have heating, temperature control, fire-retardant, safe heating wire.
Used electric heating element, the evolutions of flexible instrument such as existing electric blanket, electric heating apply have following three generations: 1, raw silk rings enamelled wire, 2, raw silk rings plastic covered wire, 3, taenidium plastic covered wire.Though each Dai Jun of fail safe and reliability has bigger breakthrough; but the three generations has only simple electric heating function; realize that heated at constant temperature can only establish sensing element in addition on utensil; therefore the existing flexible instrument cost height of producing; security performance is relatively poor; particularly can't realize protection, and mechanical performance is also relatively poor, electromagnetic radiation is stronger to the dangerous high temperature in part.
In order to overcome the shortcoming of above-mentioned existence, the purpose of this utility model provides a kind of have heating, constant temperature, advantage such as fire-retardant, safe, and collection heating, constant temperature are the heating wire of one.
The fire-retardant heating wire of the utility model temperature control is a kind of fire-retardant heating wire of temperature control that comprises heating wire, external insulation layer, it is characterized in that by twining heating wire at central insulation core silk outer surface, the low melting point insulating barrier that contains heating wire, twine the resistance temperature-sensitive silk of its outer surface, the external insulation layer that contains its outer surface is formed.The relative heating wire of resistance temperature-sensitive silk wherein is around on the contrary.
The heating of the fire-retardant heating wire collection of the utility model temperature control, constant temperature are one, simple in structure, easy to make and cost is low, can realize protection to the dangerous high temperature in part, and mechanical performance by force, also can reduce the influence of electromagnetic radiation to human body.So can fundamentally change present electric blanket product cost height, deficiency of low grade, be applicable to that electric blanket, electric heating such as apply at electrical heating elements, also can be used for the pipeline heating and the obform body heating of industries such as industry, medical science.
Below in conjunction with accompanying drawing, the utility model is described in detail.
Fig. 1 is the schematic diagram of the fire-retardant heating wire of a kind of temperature control.1-is a central insulation core silk, and 2-is a heating wire, and 3-is the low melting point insulating barrier, and 4-is a resistance temperature-sensitive silk, and 5-is an external insulation layer.
Fig. 2 is the operation principle block diagram of the fire-retardant heating wire of a kind of temperature control.Wherein dotted line is represented the signal feedback.
The central insulation heart yearn 1 of the fire-retardant heating wire of the utility model temperature control adopts high tenacity polyester filament or the soft fibers material of heatproof.Heating wire 2 adopts positive temperature coefficient≤a * 10
-4, the copper-based alloy material of a=1～9 or nichrome material.Low melting point insulating barrier 3 adopts heatproof to be lower than 80 ℃ soft insulating material.Resistance temperature-sensitive silk 4 adopts positive temperature coefficient 〉=a * 10
-3Copper-based alloy material a=1～9.External insulation layer 5 adopts the soft insulating material of 70 ℃～105 ℃ of heatproofs.Wherein resistance temperature-sensitive silk 4 relative heating wires 2 are around on the contrary.
The heating wire 2 of the fire-retardant heating wire of the utility model temperature control is implemented heating with electric current, the resistance of resistance temperature-sensitive silk 4 varies with temperature and changes, and when temperature raise, resistance temperature-sensitive silk 4 fed back to the change in resistance amount in the controller, controller can block heating wire 2 electric currents, stops heating.Otherwise, when temperature descends, controller is then connected heating wire 2 electric currents according to resistance temperature-sensitive silk 4 change in resistance amounts.So work repeatedly and reach the purpose of the heating of this heating wire, constant temperature.
The heating wire 2 of the fire-retardant heating wire of the utility model temperature control adopts around be separated with one deck low melting point insulating barrier 3 between opposite double-layer spiral structure, heating wire 2 and resistance temperature-sensitive silk 4 with resistance temperature-sensitive silk 4, when dangerous high temperature appears in the fire-retardant heating wire of this temperature control part that any non operating state causes, low melting point insulating barrier 3 is at first softening, even fusing, cause the decline of heating wire 2 and resistance temperature-sensitive silk 4 insulating properties even contact, controller is immediately according to this signal cutout electric current, avoid the generation of pyrophoricity accident like this, thereby reached fire-retardant, purpose of safety.
The heating wire 2 and the resistance temperature-sensitive silk 4 of the fire-retardant heating wire of the utility model temperature control do not adopt the wire of flat filament geometry, central insulation core silk 1 to adopt high tenacity polyester filament or the soft fibers material of heatproof, low melting point insulating barrier 3 and external insulation layer 5 to adopt soft insulating material respectively, so the mechanical strength height, can stand＞25000 times bending life test.
Heating wire 2 skins of the fire-retardant heating wire of the utility model temperature control are wound with one deck resistance temperature-sensitive silk 4, and low melting point insulating barrier 3 between heating wire 2 and the resistance temperature-sensitive silk 4 and resistance temperature-sensitive silk 4 outer plastic external insulation layer 5 insulation property are good.Produce a spot of magnetic field radiation after heating wire 2 energisings, the resistance temperature-sensitive silk 4 that can be reversed spiral absorbs by controller, has therefore significantly reduced the interference of electromagnetic radiation to human body.
Claims (9)
1, a kind of fire-retardant heating wire of temperature control that comprises heating wire, external insulation layer, it is characterized in that by at central insulation core silk 1 heating wire 2 that outer surface twines contains the low melting point insulating barrier 3 of heating wire 2, twine the resistance temperature-sensitive silk 4 of its outer surface, the external insulation layer 5 that contains its outer surface is formed.
2,, it is characterized in that resistance temperature-sensitive silk 4 relative heating wires 2 are around on the contrary by the described heating wire of claim 1.
3, heating wire according to claim 1 is characterized in that central insulation core silk 1 adopts high tenacity polyester filament.
4, heating wire according to claim 1 is characterized in that central insulation heart yearn 1 adopts the soft fibers material of heatproof.
5, heating wire according to claim 1 is characterized in that heating wire 2 adopts positive temperature coefficient≤a * 10
-4Copper-based alloy material, a=1～9.
6, heating wire according to claim 1 is characterized in that heating wire 2 adopts positive temperature coefficient≤a * 10
-4The nichrome material, a=1～9.
7, heating wire according to claim 1 is characterized in that low melting point insulating barrier 3 adopts heatproof to be lower than 80 ℃ soft insulating material.
8, heating wire according to claim 1 is characterized in that resistance temperature-sensitive silk 4 adopts positive temperature coefficient 〉=a * 10
-3Copper-based alloy material, a=1～9.
9, heating wire according to claim 1 is characterized in that external insulation layer 5 employing heat resisting temperatures are 70 ℃～105 ℃ soft insulating material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92215418 CN2117684U (en) | 1992-04-14 | 1992-04-14 | Temp. controlled and flame retarded electric heating cord |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92215418 CN2117684U (en) | 1992-04-14 | 1992-04-14 | Temp. controlled and flame retarded electric heating cord |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2117684U true CN2117684U (en) | 1992-09-30 |
Family
ID=4959829
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 92215418 Granted CN2117684U (en) | 1992-04-14 | 1992-04-14 | Temp. controlled and flame retarded electric heating cord |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2117684U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108426649A (en) * | 2017-02-15 | 2018-08-21 | 塔克及海林阁有限公司 | Cartridge heater with temperature sensor |
-
1992
- 1992-04-14 CN CN 92215418 patent/CN2117684U/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108426649A (en) * | 2017-02-15 | 2018-08-21 | 塔克及海林阁有限公司 | Cartridge heater with temperature sensor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |