CN2167497Y - Two-dimensional electric heating mat - Google Patents

Abstract

The utility model discloses a two-dimensional electric heating mat with earthing protection, comprising a temperature inductance body, an electric heating body, insulators and binder. The utility model is characterized in that earthing protection bodies are symmetrically positioned between the dual insulators with different materials of the outer part, and the binder is positioned between correlative accumulating layers. The electric heating body is arranged between two layers of same insulators of the upper part, and the temperature inductance body is arranged between two layers of same insulators of the lower part, and the insulator with the other material is clamped between two layers of same insulators which are positioned at the middle part.

Description

Two-dimensional electric heating mat

The utility model relates to a kind of ohm-type electric heating lamination sheet, particularly a kind of planar temperature-sensitive ground protection electric heating lamination sheet.

Heating alloy commonly used has naked light during heating, and is the wire heating, is not suitable for large tracts of land heating needs; In electric heating conducting film when heating,, the thermal stability that has is relatively poor, have then must with the heating object coenosarc, need high temperature sintering during the making that has; Though electric heating PTC controllable temperature is difficult to continuous temperature control, heating power is also less; Utilize metal forming (sheet) when doing calandria; its calandria mostly is the long-pending ennation of iso-cross-section along its length; can not change the temperature gradient in the rate of heat addition and different heating zone, have not yet to see report relevant for ground protection, double insulated planar electric heating lamination sheet.

The purpose of this utility model does not have naked light, can be used for the planar temperature-sensitive ground protection electric heating lamination sheet of large tracts of land heating when providing a kind of surfacing, stable performance, heating.

The purpose of this utility model is achieved in that

Accompanying drawing is a kind of structure transversal profile figure of the present utility model.

As shown in the figure, the planar temperature-sensitive safe electric heating laminated chip that electric heating element 1, temperature sensor 2, ground protection body 3, insulator 4 usefulness adhesives 5 is bonded into by hierarchical sequence. Electric heating element 1 can by metal forming (sheet) and Alloy Foil (sheet) thereof such as aluminium, copper, nickel, be processed into according to certain rules mutually isolation through methods such as machinery, chemistry and arrange, continuously conductive pattern. Electric heating element 1 is at least one, and its cross section can be identical, also can be different. 1 ' a, 1 ' c is electric heating element 1 external power supply exit. 1a, 1b, 1c are that electric heating element 1 is arranged the transversal profile schematic diagram of arranging by A, B, C subregion, under identical radiating condition, when S1a＞S1b＞S1c(S represents cross-sectional area) time, the A district temperature of 1a is lower than B, the C district of 1b, 1c, A district firing rate is slower than B, C district, C district temperature is higher than A, B district, and the rate of heat addition is the fastest. Temperature sensor 2 with metal forming (sheet) and Alloy Foil (sheet) thereof such as aluminium, copper, is processed into the continuously conductive pattern that arrangement regulation and electric heating element 1 adapt through methods such as machinery, chemistry. Temperature sensor 2 is at least one, and its cross-sectional area can be identical, also can be different. 2 ' a, 2 ' c are the exit of temperature sensor 2 and external temperature regulating device, insert temperature regulating device and can carry out continuous temperature control to electric heating element 1. Metal forming (sheet) and the Alloy Foil (sheet) thereof such as screen connects, ground protection body 3 usefulness copper, aluminium, iron, nickel; whole is bonded on the laminated chip (plate); its shielding, ground connection exit can be in peripheral appropriate locations; not giving mark among the figure points out; when selecting unlike material, can have electrostatic screen, electromagnetic shielding, ground protection or have multiple effect concurrently. Access way determines according to requirements. Electrostatic screen can prevent that electrostatic field from disturbing, and electromagnetic shielding can prevent the interference of electromagnetic field and leakage, ensures the stability of temperature control test, also can do the protective shielding. Ground protection can prevent the accident of human electric shock effectively. Insulator 4 is the double insulations that are made of insulating materials 4a, the 4b of unlike material such as plastics, mica, glass cloth etc., with the reinforced insulation performance. The ground protection body 3 that is distributed in upper and lower end is between double insulation body 4a, the 4b of outside unlike material, and adhesive 5 can be used can bonding metal, non-The organic or inorganic heatproof insulating binder of metal, adhesive 5 is between each relevant lamination, between two layers of identical insulator 4a on top, be provided with electric heating element 1, be provided with temperature sensor 2 between two layers of identical insulator 4a of bottom, clamping has the insulator 4b of another kind of material between two layers of identical insulator 4a in the middle part of being in.

The utility model is owing to can seal heating; electric heating element not with contact with air; the non-oxidation effect; there is not naked light during heating yet; long service life; because planar body has increased heat exchange area relatively; improved the thermal efficiency; the cross section that electric heating element, temperature sensor extend along its length can change; so can realize the partition heating of different heating rates and different temperatures gradient, adopt the double insulation coupling of unlike material to use, more increased electric insulation intensity; owing to have the ground protection effect, can effectively avoid the accident of human electric shock.

The utility model can be used for industry, and as pipeline heating, electric dry oven, agriculture aspect is cultivated and heated as the heating of vaccine bed, mushroom, the household electrical appliance class, and as daily electrothermal article, electric heating appliance etc. have bright development prospect.

Claims (5)

1, planar temperature-sensitive ground protection electric heating lamination sheet; comprise temperature sensor, electric heating element, insulator and adhesive; it is characterized in that: ground protection body 3 symmetries are between double insulation body 4a, the 4b of outside unlike material; adhesive 5 is between each relevant lamination; between two layers of identical insulator 4a on top, be provided with electric heating element 1; be provided with temperature sensor 2 between two layers of identical insulator 4a of bottom, clamping has the insulator 4b of another kind of material between two layers of identical insulator 4a that mediate.

2, lamination sheet according to claim 1 is characterized in that: electric heating element 1 is at least one.

3, lamination sheet according to claim 1 is characterized in that: temperature sensor 2 is at least one.

4, lamination sheet according to claim 1 is characterized in that: the electric heating element cross section is what change.

5, lamination sheet according to claim 1 is characterized in that: the temperature sensor cross section is what change.

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