CN2517213Y - Electrothermal film element - Google Patents

Abstract

The utility model relates to a galvanothermy membrane element, comprising a insulation material, two isolation belts, a semiconductor film, an electrode and a mental wiring block, which is characterized in that: The two ends of the insulation material provide the isolation belts; the semiconductor film coating on the surface is between the two isolation belts; the electrode is at two ends of the semiconductor film; the mental wiring block is on the electrode; the width of the block is equal to that of the electrode and the working voltage is 1-220/380V alternating direct current and the power density is 0.01-30W/cm<2> and the range of the warming up of the temperature for the superficial working is 0-600 degree. The utility model has the advantages that can be widely used in water heating devices such as water heaters, showers, boilers, and other members; can also be used for chemical and pharmaceutical industry and heat the transporting liquid or gas in the pipeline to achieve the transmission or catalytic craft requirements.

Description

Electrothermic film element

Technical field

The design relates to a kind of heating element, relates in particular to a kind of electrothermic film element that converts electric energy to heat energy.

Background technology

The device that converts electric energy to heat energy at present is often will use in people's life and work, its kind also has many kinds, comprise electric furnace, electric hot plate, electric heater etc., basically be the stratie that adopts the bigger material of resistivity to make, when electric current passed through this heating element, this element converted electric energy to heat energy and discharges.Though this heating element can produce heat energy and obtain general use, the shortcoming that exists is that the transfer ratio of electric energy when converting heat energy to is not high, and is bigger to waste of electric energy.

The utility model content

The design's purpose is to provide a kind of heating film element, the thermal energy conversion rate height of this element.

For achieving the above object, the heating film element that the design provides includes:

One insulating material, both ends respectively are provided with an isolation strip, and the width of isolation strip is 1-50mm, and between two isolation strip, its surface-coated has semiconductor film;

The both ends of semiconductor film are electrode, and electrode width is 1-20mm, and thickness is 0.05-2mm, is folded with the metal connection card on the electrode, and its width and electrode width are equal to, and thickness is 0.1-5mm.

Described insulating material is shaped as tubulose or sheet.

Described insulating material is enamel, pottery, glass or quartz glass.

Described electrode is silver, aluminium or its alloy.

Described metal connection card is a copper alloy.

The design can select insulating material according to the temperature of heating element needs heating, if heating-up temperature is lower, then can select the lower insulating material of heatproof degree, if heating-up temperature is higher, can select the higher insulating material of heatproof degree.Object that can also heat as required and mode of heating are selected the shape of heating element.Under different operating voltage conditions, can obtain different power densities and surface Working Temperature, usually, the design's operating voltage is the 1-220/380V AC and DC, power density is from 0.01-30W/cm ², the intensification scope of surface Working Temperature is 0-600 ℃.

The heating film element that the design provides, the semiconductor film electrical characteristics of its surface-coated are the pure resistance of positive temperature coefficient, the electric current work done that produces after applying voltage and convert electric energy to heat energy.The heat that Electric radiant Heating Film produced is passed to the fluid of the heating element of flowing through, and these fluid heat absorption back temperature raise, and reach the purpose of heating.

The design can be widely used in water-heating devices such as water heater, shower, boiler, also can be used for industry such as chemical industry, medicine, with the liquid or the gas heated of carrying in the pipeline, to reach technological requirements such as conveying or catalysis.The heating element of sheet or other shape can be dried as direct heated air heating or to article, such as industries such as agricultural byproducts processing and textile printing and dyeings.

Description of drawings

Also in conjunction with the accompanying drawings the design's flesh and blood is described in detail with embodiment below, wherein

Fig. 1 is the plane semi-section schematic diagram of embodiment 1 tubular heating element;

Fig. 2 is the floor map of embodiment 1 tubular heating element;

Fig. 3 is the floor map of embodiment 2 planar heat-generating bodies.

Embodiment

Embodiment 1

See also Fig. 1, the insulating material of present embodiment is a quartz glass tube, the two ends of this glass tube respectively have one section wide to be the isolation strip 1 of 40mm, this isolation strip 1 is provided with from guaranteeing security standpoint to consider, its width is not the numerical value of a regulation, can decide according to the size of heating element, in general, its width is just can guarantee safety between the 1-50mm.

Between the isolation strip, two ends 1, adopt evaporation coating method to apply the layer of semiconductor film in the quartz glass tube-surface, form the film thermal treatment zone 4, this film thermal treatment zone 4 is will be deposited on the insulating material behind the aqueous solution evaporate based on the multiple salt of tin with pyrolysismethod technology, through high temperature sintering, obtain the resistant to elevated temperatures semiconductor film of one deck simultaneously, because this technology is known technology, and not the design's application theme, be not described further at this.

The wiring card 3 that it is 15mm that a width is respectively drawn at the two ends of semiconductor film is used to connect power supply.As much as possible little for guaranteeing the contact resistance between wiring card 3 and the semiconductor film, avoid local overheating, on the semiconductor film of wiring card 3 and semiconductor film contact site, make the electrode 2 of a bed thickness 1.5mm, the width of this electrode 2 and wiring card 3 are with wide.Make the material of electrode 2 and wiring card 3 and select the electric conductivity excellent material, as silver, copper, aluminium or its alloy, present embodiment adopts conductive silver paste; Wiring card 3 is selected the conductance height for use and is had certain intensity and flexible copper alloy, and thickness is 3.5mm.

The concrete width of wiring card 3 and electrode 2 and the selection of thickness are same relevant with the manufactured size size of heating element, are not fixed numbers, and it mainly acts on is to guarantee to have excellent contact.The width of general electrode 2 is 1-20mm, and thickness is that 0.05-2mm just can achieve the goal; The thickness of wiring card 3 is generally 0.1-5mm, if too thin, does not then have intensity, if too thick, does not then have elasticity.

The heating element that present embodiment is made as shown in Figure 2, under 380 volts alternating current condition of work, power density is 30W/cm ², the surface Working Temperature of its thermal treatment zone 4 can reach 600 ℃.

Embodiment 2

See also Fig. 3, it is insulating material that present embodiment adopts pottery, is shaped as tabular, the width of isolation strip 1 is 2mm, the width of electrode 2 and thickness are respectively 2mm and 0.1mm, and the copper alloy thickness that wiring card 3 is selected for use is 0.2mm, and all the other manufacturing process are identical with embodiment.

Claims (5)

1, a kind of electrothermic film element includes:

One insulating material, both ends respectively are provided with an isolation strip, and the width of isolation strip is 1-50mm, and between two isolation strip, its surface-coated has semiconductor film;

The both ends of semiconductor film are electrode, and electrode width is 1-20mm, and thickness is 0.05-2mm, is folded with the metal connection card on the electrode, and its width and electrode width are equal to, and thickness is 0.1-5mm.

2, electrothermic film element as claimed in claim 1 is characterized in that, described insulating material is shaped as tubulose or sheet.

3, Electric radiant Heating Film dress element as claimed in claim 1 or 2 is characterized in that described insulating material is enamel, pottery, glass or quartz glass.

4, electrothermic film element as claimed in claim 1 is characterized in that, described electrode is silver, aluminium or its alloy.

5, electrothermic film element as claimed in claim 1 is characterized in that, described metal connection card is a copper alloy.

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