DE7400199U - ELECTRIC RADIATOR FOR HOUSEHOLD USE - Google Patents

Description

ΡΑΪ EMANVVAU ε: T

DIETRICH UWiNSKY

Hb ₁ NZ-JOACHIM HUBER

REINtR PRIETSCH

MONKS 21

GOTTHARDSTR. 81

G 75 OO 199.3 January 16, 1976

Gachoc S.A. 7770-IV / He.

C Electric radiator for household use>

The innovation concerns an electric radiator for domestic use, with a corrugated, metallic radiant and Convection element and a number of electrical conductors, of each in a corrugation of the radiating and convention element is arranged and embedded in an electrically insulating material.

There are already known electric heaters, in which the energy is supplied by electrical conductors which are arranged in a chamber filled 1st oil with a liquid, for example, and provided with external fins for dissipation of heat by radiation and convection. These apparatus, which often take the form of movable radiators, require a sealed chamber for the oil and are generally quite bulky.

The innovation is the object of the invention to provide an electric heater in the introduction above, for example, from US-FS 557 282 known species, of simple construction, low weight, small thermal inertia and $ uten thermal

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- 2 -mix efficiency combined in calibration.

According to the invention, this object is achieved in that the corrugations cU »§ Strahl- uüu Konvekvionselssientes have a trapezoidal profile in which the width of a corrugation is smaller than the width of the two successive corrugations separating base and that the electrically insulating Material consists of a mixture, at least half of which contains a thermally conductive component together with an adhesive binder for fixing the material and the conductor in each of the corrugations and that the electrical insulating, thermally conductive material is only placed in the area of the apex of each corrugation »

Preferred embodiments are in claims 2 to 4 specified.

The innovation is explained below with reference to the drawing by way of example.

Fig. 1 is a rare view of a heater according to the invention;

Fig. 2 is a section along the line II-II of Fig. 1;

Flg. 3 is a view of part of FIG. 2 in FIG larger scale *

The illustrated innovation according to the heating device essentially comprises a radiation and KonvektIonselement 7, electrical conductors 8 and a system 10 for thermal connection between these ladders and element 7.

The radiation and Konvektlonselement 7 is through a metal plate with protruding corrugations with approximately trapezoidal Cross-section formed, which consists of 7-white converging flanks

7400199 96.05.7o

t ι I ·

11 (Flg. 3) and a Scheltel section 9 exist. the two successive corrugations separating from each other portions 13 of the plate 7 have a width D, which aiB the erexte ά ββ Söheitelö 9 »£? Vis hunger. 1st

Insulated electrical conductors 6 are arranged in the corrugations in the sewing of your apex 9. All of these conductors 8 are of course connected to one another at their ends and to a current withdrawal point (not shown) via a thermostat 14.

The conductors 8 are covered by a solid, thermally conductive material 10, which is attached to the apex 9 and the flanks 11 of the corrugations of the plate 7 near the conductor 8 adheres.

p & s material 10 can e.g. by a thermally conductive powder, s.B. a powder of graphite, copper or aluminum, and a hardenable binder, e.g. an epoxy resin, can be formed, the thermally conductive powder being at least 60% of the mixture »represents.

To produce the sheathing of the conductors 8, a multiple injection pump can expediently be used, which was previously used the desired amount of material 10 in a pulpy state is loaded. First, a first amount of the material 10 is poured into the Scheltel sections 9 of the corrugations of the plate 7 injected. Then the conductors 8 are used, whereupon the remainder of the material 10 contained in the injection pump is injected. This technique enables the easy Control of the total amount of material injected 10.

After hardening, the material 10 holds the electrical conductors 8 in place and ensures excellent results Heat transfer between these conductors and the corrugations of the plate 7, the apex sections 9 and the adjacent sections of the flanks 11 in operation practically on the be brought to the same temperature.

7400139 16.0 * 78

The radiant and convection plate 7 is in a frame held, which is formed by four U-shaped housings 1 to 4.

For this purpose, the plate 7 is turned over at both ends

gene that it forms two U-shaped edge strips 21 (Fig. 2), the side housings 2 and 3 comprise these edge strips 21 as well as the upper and lower housing 1 and 4, like di * s is apparent from Fig. 2, whereby the rigidity of the arrangement is ensured. Housing 1 to 4 and the edge strips 21 of the plate 7 have ribs 22 for latching the housing,

Included to enable heat output by convection the upper housing 4 and the lower housing 1 have a series of openings 5 (Fig. 2).

The heater so formed was therefore very simple

pern with an oil bath a very low L. "uk.r .. also occurs with him no sealing problem> and its weight and weight are considerably smaller than those of the known radiators.

The invention can of course be modified. In particular, numerous formulas known to those skilled in the art for hardenable mixtures can be used to form the thermally conductive material 10 to be used.

Claims (4)

Protection claims: 1. Electric radiator for household use, with a mad, metallic radiant and convection element and a number of electrical conductors, each of which is arranged in a corrugation of the radiant and convection element and is embedded in an electrically insulating material, characterized in that the corrugations ('1, 9) of the radiant and convection element (7) have a trapezoidal profile in which the apex width (d) of a corrugation is smaller than the width (D) of the base (13) separating two successive corrugations and that the electrically insulating material (10) consists of a mixture at least half of which contains a thermally conductive component together with an adhesive binding agent for fixing the material (10) and the conductor (8) in each of the corrugations (11, 9) and the electrically insulating, thermally conductive component Material is only arranged in the region of the apex (9) of each corrugation. 2. Electric heater according to Anopruch 1, characterized in that the thermally conductive component is graphite powder is. 3. Electrical heating element according to claim 1, characterized in that the thermally conductive component is a powder based on a thermally conductive metal such as copper or aluminum is. 4. Electric heater according to claim 1, characterized in that the adhesive binder is a curable resin such as a Epoxy resin 1st. 7400199 96.06.76