SU11124A1 - Electric heater with heating resistor placed in a base of wood or wood - Google Patents

Description

Known electrical heating devices, in which the heating elements are located in metal tubes, placed at the base of wood or wood.

The present invention relates to such heaters, which have the advantage that the heat they radiate, as opposed to the sudden emission of metal heaters, is felt in the form of so-called soft heat, and that the heating element is placed directly in the base of wood or wood. and clamped between two plates, made difficult to ignite, with a gasket, in the cases to be insulated insulating layers tightly covering the heating resistance. The heating device according to the invention can be made waterproof, whereby water resistance is achieved simply by the fact that the finished heater is soaked with sealing means covering its pores and other openings; sealing means can be used such that, at the same time, can make wood or wood even more fire-resistant, which before the introduction of the heating coil are made difficult to ignite in any way.

In order to increase the heat transfer of the heating device, it arranges with vigorous apertures surrounded by a kind of resistance placed in a tree or wood.

The drawing shows several embodiments of a heating device according to the invention, with FIG. 1 is a longitudinal sectional view along line I-I of FIG. 2; FIG. 2 is a top view of the heater; FIG. 3 is a section along the line 1P-III of FIG. 1 on a larger scale; FIG. 4-part cut on an even larger scale; FIG. 5-7 is a section and top view of a part of the heater with grooves provided for the heating wire; FIG. 8-cross section; FIG. 9 is a perspective cut of a heating wire surrounded by an insulating layer; FIG. 10 is a top view of a portion of an insulating lining with a heating wire sewn to it; FIG. 11 and 12 are top views, on a smaller scale, of other forms of implementation.

Depicted in FIG. the heater consists of two wooden plates 1,2, of which the bottom 1 is provided with supports 3. The plates 1,2 after laying the heating wire 4 between them are compressed together and, if necessary, using some kind of binder, bind tightly together a friend.

In the plates 1,2, there are holes 5, which in both plates are exactly one above the other. These holes, which serve to increase heat transfer, can also be located only in one of the plates 1,2 and reach only a certain depth of each of them.

The arrangement of the heating wire 4 inside the finished heater is shown in FIG. 2. Wire 6 for supplying electric current is connected to heating wire 4 by means of plugs 7 or the like.

The wire 4 can be surrounded by an insulating layer 8 (Fig. 8 and 9) and, either by itself or with this insulating layer, should be laid on layers of mica 9 or the like to be laid. In the relevant cases, only one mica can be used. layer 9. A simple way to connect the heating wire

with an insulating lining is shown in FIG. 10. Here, the heating wire 4 is sewn on with a seam 10 to the insulating lining 11; With this lining, the heating wire is laid, using one or two mica layers 9, between the two wooden plates 1,2, as shown on an enlarged scale in FIG. four.

Stitching of the heating wire 4 to the lining 11 can also occur in such a way that the wire 4 serves as the upper or lower thread in the sewing machine and this machine is sewn to the lining 11. It is advisable to use the wire as the upper thread in the sewing machine, using the lower thread, as usual, yi

If the heating wire 4 is relatively thick, then to achieve a better contact with the surrounding wood parts, grooves 12 can be prepared in the adjoining surfaces of the plates 1,2 or in one of them (Figs. 6 and 7).

In the heating device (Fig. 11) having an oval shape, the heating wire 4 is laid crosswise, so that the holes 5 are surrounded by it from all sides. Depicted in FIG. 12 octagonal heater has holes 5 made in the form of long cuts. In general, the external form of the heater, as well as the shape and location of the holes, can be anything.

Plates 1,2 can be made of wood or wood of any kind, for example, wood pulp.

The subject of the patent.

1. An electrical heating device with a heating resistance placed at the base of wood or wood, characterized in that the resistance helix 4 is sandwiched between two plates 1 and 2, made difficult to ignite, and surrounded, in the cases to be considered, tightly covering its insulating layers 8.9, in which the plates 1 and 2 are arranged through holes 5, which serve to increase heat transfer and are surrounded by a heating coil 4.

2. With the heating device described in paragraph 1, the use of the heating wire 4, sewn on or insulated into the insulating lining 11.

3. With the heating device described in subsections 1 and 2, the use of plates 1 and 2 impregnated with a sealing means in order to obtain water resistance.

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