SU1749641A1 - Electric convector - Google Patents

Abstract

Use: for heating air. The essence of the invention: heating sections are connected to the grid. As a result, sections 1 are heated to a certain temperature. The air passes through the gaps between sections 1, is heated from their surface, and rises up. The heated air leaving the electric convector is replaced by cold air from the bottom through the space under the sections. This creates a natural circulation. 5 il. with C 2 Yu CN N

Description

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The invention relates to air heating and can be used for heating various rooms,

Known air heater having a housing, a zigzag mesh heater, reinforced with clamps in tubular boards. In this case, the latches are enclosed in metal pipes filled with heat-conducting electrically insulating material and connected via electrodes to a power source.

With this design of the air heater, mesh zigzag heaters receive heat by heat conduction from the clamps, which leads to additional energy losses, and also complicates the design.

In addition, a zigzag heater does not cover the entire circuit of the clamps, but only a part of it, which leads to uneven heat removal from the heating surface and, consequently, to overheating of individual areas of the clamp surface.

Closest to the proposed technical solution is an air heater design in which an electrical heating tape is used to heat the air, wound on a frame with insulators in several layers. At the same time, dielectric plates are installed in the gaps between the tape layers that play the role of secondary radiators. However, with such a design of the air heater frame and the method of winding the electrical heating tape, concentric vertical heating circuits with additional plates are formed, which significantly complicates the passage of air flow through the slit channels. As a result, the efficiency of heat removal from the surface of the electric heating tape is reduced. In addition, the use of dielectric plates leads to the complexity of the design of the air heater.

The purpose of the invention is to increase the uniformity of heat removal from the sections.

FIG. 1 shows the electric convector, general view; in fig. 2 - the same, longitudinal section; in fig. 3 - the same cross section; in fig. 4 - mounting unit; in fig. 5 - stand.

The electric convector consists of several heating sections 1 of a flexible electric heating element 2, a protective casing 3 and a stand 4.

The heating sections include longitudinal 5 and transverse b lattices, which are joined to each other by vertical edges to form an parallelepiped-shaped semi-closed surface. Longitudinal 5 and transverse 6 lattices of one heating section 1 differ from the lattices of the other heating section by width of the air gap 7, which allows to place one heating section inside another. In this case, the transverse grids 6 of the smaller heating section are equal to the distance between the transverse grids 6 of the larger heating section. This makes it possible to fix the established size of the air gap 7 between

5 separate heating sections.

The tapes of the flexible electric heating element 2 are interlaced with horizontal rings in the cells of the longitudinal 5 and transverse grilles along the entire contour of the heating sections 1. The ribbons move from one ring to another at one of the transverse grids (Fig. 3).

Contiguous longitudinal 5 and transverse 6 lattices of the heating sections

5 1 are interconnected by means of flexible twists 8 of soft wire (Fig. 4). At the bottom, the heating sections 1 are supported on a support 4 with V-shaped supports 9 and limiters 10 for longitudinal grids 5 (Fig. 5). The inclination of the supports 9 from the edge to the center of the stand 4 causes a different height of the longitudinal 5 and transverse 6 grids in different heating sections 1. The grids of the internal heating section

5 is higher in height than the grids of the outer heating section, which ensures that the circulating air is evenly distributed over the vertical gaps 7,

The device works as follows.

A flexible electrical heating element 2 is turned on in the power grid, as a result of which its surface is heated to a certain temperature. At the same time throughout

5, the height of the electric convector is formed by vertical heated surfaces, in contact with which, the air in the gaps 7 heats up and rises. The heated air, the exit from the electric convector, is replaced by cold air from the bottom through the space under the heating sections. In this way, natural circulation of air through the electroconvector is created.

Claims (1)

5 claims An electric convector containing heating sections installed with the formation of channels for the passage of air between them and formed by vertically mounted grids with tape heaters fixed to them, characterized in that, in order to increase uniform edges to form a closed heat removal section from the sections, each of the surfaces placed in one another and the latter are made of several gratings, 5 having a variable height, enlarged vertically from the inner section to the outer section. 11 i J td one 31Z 13 L s & tsz.% / C C 0 & g l // Jl.