SU1820993A3 - Flexible electric heating panel - Google Patents

Description

The invention relates to electric heating and can be used in household heating devices, in construction, industry and medicine.

The aim of the invention is to improve the thermal and electrophysical characteristics of the panel while maintaining its relative flexibility and simplifying its manufacturing technology.

Figure 1 shows an electric heating panel with a partial section.

The electric heating panel contains an inner woven resistive layer 1 of a plain weave made of conductive threads of the shell-core structure.

Electrodes 2 in the form of metallized polymer threads are introduced into the structure of the resistive layer during weaving, electrical insulating layers 3 and 4 are made of an epoxy or phenol-formaldehyde binder applied to a glass tray. The current supply to the resistive layer is carried out by wiring wires 5, which are connected 7 to the terminals of the electrodes of the resistive layer, excluding the soldering operation. Places of contact connections are carried out with electrodes pressed between two insulating layers. To protect the wire from mechanical deformation and its possible damage during the pressing process, partially pressed polymer or rubber tubes are provided in the places where the wire exits the panel.

FIG. 2a shows the electrical connection of the metallized electrodes with the lead wires.

Part of the mounting wire 2 is freed from the insulating braid 3 and is connected with the loop a to the metallized threads of the electrodes 1.

FIG. 26 shows the twist of the metal conductors of the wire, fixing the elect

1820993 АЗ richeskoy loop connection between electrode and wire.

Example 1. A flexible electric heating panel is made by pressing a resistive layer in the form of a fabric with a density of conductive threads of 6 n / cm between two insulating layers of fiberglass and polymer. The electrodes are made of metallized threads with a linear density of 43.4 tex, twisted into four folds with a twist of 60 ct / m. The electrical resistance of the resistive layer with a distance of 32 cm between the electrodes is 180 ohms. At a supply voltage of 220 V, a temperature of 90 ° C is set on the panel surface after 5 minutes in a stationary mode. The power consumption is 268 W, the scatter of the surface temperature p does not exceed 3% (see Table 1).

Example 2. A heating panel is prepared as in example 1, except that the structure of the resistive layer and the distance between the electrodes are changed (see Table 2).

Example 3. A heating panel is prepared as in example 1, except that the structure of the resistive layer and the distance between the electrodes are changed (see Table 3).

Example 4. A heating panel was prepared as in example 1, except that the distance between the electrodes was changed (see Table 4).

Claims (2)

Claim 1. Flexible electric heating panel containing a flat resistive 5 layer, electrodes connected to it, at least two electrical insulating layers impregnated with a polymer binder and located on both sides of the resistive layer, characterized by the fact. That, in order to improve the thermal and electrophysical characteristics, the resistive layer is made of a plain weave fabric, the warp and weft of which contain conductive ones. electrical insulating threads and 15 electrodes, made in the form of 2-3 metallized threads with a linear density of 43.4 tex, twisted in 4 additions with a twist from 60 to 100 kr / m, while the distance between the electrodes is 16-90 20 cm, the density of conductive threads between the electrodes 2-20 n / cm, along the electrodes 2-14 n / cm, and the area of the resistive layer is 1000-5760 cm ² . 2. The panel according to claim 1, characterized in that, in order to simplify the manufacturing technology, the connection of the electrodes with the conductive wires is made in a loop with an additional twist and is pressed into the panel with a resistive layer. 30 3. The panel according to claim 1, characterized by the fact that the conductive threads of the resistive layer are made of polymer soot-filled threads of the shell-core structure. Table 1 I The number of conductive | threading threads 1 cm Resistive layer area, cm ² Distance between electrodes, cm Email res. panels. Ohm Power consumption, W Surface temperature, ° C | between | electr. along the electrodes | 6 6 1728 32 180 268 90 table 2 Number of conductive threads per cm Resistive layer area, cm ² Distance between electrodes, cm Email res. panels, Ohm Power consumption. W Surface temperature, ° C between electr. along the electrodes 20 fourteen 5760 90 150 ^τ 320 70 Table 3 Number of conductive threads per cm Resistive layer area, cm ² Distance between electrodes. cm Email res. panels, Ohm Power consumption, W Surface temperature. ° C between electr. along the electrodes 2 2 1000 28 1200 40 50 Table 4 Number of conductive threads per cm Area | Distance resistively between electrical Email res. panels. Ohm Power consumption, W Surface temperature, ° C between electr. along the electrodes th layer, cm * trodes, cm 6 6 1080 18 88 220 100