RU2288412C1 - Plinth heater for central heating systems - Google Patents

Abstract

FIELD: heat supply systems.

SUBSTANCE: heater comprises section made of tubular heat exchanger for heating agent and finings. The section is provided with front, bottom, and top low-temperature sectional shields-circuits and back convective circuits with fining and swirlers. The tubular heat exchanger is provided with vertical plate provided with front and top sectional shields-circuits and back convective circuits. The swirlers are mounted inside the intersection junctions. The section is made of pig iron, steel, aluminum and their alloys, and sectional shields-circuits are made of sheet aluminum or nonmetallic material.

EFFECT: enhanced efficiency.

3 cl, 3 dwg

Description

The invention relates to heating equipment, and in particular to central heating systems of buildings and structures with horizontal laying of pipelines, in particular to apartment, sectional, and other

Known skirting convector, consisting of a heat pipe and box-shaped fins made of sheet steel (see the textbook Gusev V. M. "Heat supply and ventilation", Stroyizdat, Leningrad department, publ. 1975, p. 70-71, p. 7- 13).

The disadvantage of this design is the technology of packing box-shaped fins on the heat-transfer pipe, which causes the formation of an air film on the contact surface of the heat-transfer pipe and box-shaped fins by the difference in the values of the temperature expansions of the heat-transfer pipe and box-shaped fins during operation of the heating device, which reduces the heat transfer of the box-shaped fins, because Air film is a classic heat insulator.

Closest to the claimed heating device is a heating device for central heating systems, consisting of sections formed by tubular heat-releasing elements for the coolant, and fins (see RF patent No. 2092747, IPC ⁷ F 24 F 1/14, publ. 10.10 .97 g.).

The disadvantages of the prototype are the complexity of the structures of the connections of the tubular elements to each other by means of studs, the use of expensive refractory metals for the manufacture of casting forms of tubular elements, the complexity of the manufacturing technology.

The objective of the proposed technical solution is to increase the intensification of heat transfer, simplifying the design of heating devices and saving manufacturing and operation.

The solution to the technical problem is achieved by the fact that in the well-known baseboard heating device of central heating systems, consisting of a section formed by a tubular heat-releasing element for heat carrier and fins, according to the invention, the section is equipped with front, with vertical through channels, lower and upper low-temperature prefabricated contour screens, and respectively, rear convective contours with fins, and swirls, and the tubular heat-releasing element is equipped with a radially vertical molded, onto which the front lower and upper prefabricated screens contours and respectively rear convection loops thus swirlers disposed within the intersectional compounds, and when the external device intersectional compounds are in the form of gaskets.

Tubular heat exchange element with fins, front, lower and upper prefabricated contour screens and rear convective contours are made with double symmetry with respect to horizontal and vertical planes and are fixed on a radially located vertical plate, and on its contact surfaces between front prefabricated contour screens and rear convective high heat conductive adhesive mastic applied.

The section is made of cast iron, steel, aluminum and their alloys, and prefabricated contour screens are made of drawn aluminum sheet or non-metallic material.

This design will increase the heat transfer intensification, simplify the design of heating devices and increase the efficiency of manufacturing and operation.

The essence of the proposed baseboard heating device is illustrated by drawings, in which Fig. 1 is a front view of A-A, in Fig. 2 is a top view, in Fig. 3 is a section along BB.

The plinth heating device consists of a section 1 of a tubular heat-releasing element 2, a connecting radially vertical plate 3, fins 4, flow swirls 5 located inside intersectional joints 6, prefabricated contour screens made of front low-temperature lower 7 and upper 8, with vertical through channels 9 and ribs 10, and respectively the rear convective circuits 11, 12 with fins 13. On the contact surfaces between the front low-temperature precast screens-contours - bottom 7 them and the top 8, the rear convective circuits 11, 12, and radially disposed vertical plate 3 highly conducting adhesive applied mastic 14, wherein the prefabricated screens circuits are fixed to a radially disposed vertical plate 3 springy clamps 15.

The plinth heating device for connecting to heat pipes has nozzles 16 and gaskets 17.

The device operates as follows.

The heat transfer from the coolant to the environment occurs intensively through the tubular heat transfer element 2, under the conditions of an artificially created turbulent vortex regime by swirlers 5 in intersection joints 6, as a result of which a zone with increased heat transfer from the coolant to the wall of the tubular heat transfer element 2 arises in the section.

The swirlers 5 installed in the intersectional joints 6 along the length of the tubular heat-releasing element 2 create a peripheral vortex rotational movement in the section, which destroys the laminar flow layer at the wall of the tubular heat-releasing element 2, which is a heat insulator, like a fixed heat-transfer layer. This increases the heat transfer to the wall and the temperature of the wall itself, which intensifies the heat exchange between the coolant and the wall of the tubular heat-transfer element 2 inside and outside between the front assembly screen-circuits 7 and 8 and the rear convective circuits 11, 12 - with the environment.

Thus, the temperature of the wall of the tubular heat-releasing element 2 rises, allowing you to expand the outer surface of the section of the baseboard heating device.

The tubular heat-releasing element 2, the front precast screens 7 and 8 and, accordingly, the rear convective circuits 11, 12 are made with double symmetry with respect to the horizontal and vertical planes.

To create the structural integrity of the section on the contact surfaces between the radial vertical plate 3, the front precast screens 7 and 8 and the rear convective circuits 11, 12, a highly conductive adhesive mastic 14 is applied and they are fixed with spring clips 15.

The manufacture of a heating device is carried out from cast iron, steel, aluminum, their alloys, prefabricated screens-contours of drawn sheet aluminum or non-metallic material.

Using the proposed baseboard heating device for central heating systems will allow, in comparison with the prototype, to increase the heat transfer by expanding the outer surface and increasing the nominal density, simplify the design, reduce the weight of the surface unit, increase the economic performance of heating systems.

Claims (4)

1. A plinth heating device for central heating systems, consisting of a section formed by a tubular heat-releasing element for coolant and fins, characterized in that the section is equipped with front, with vertical through channels, lower and upper low-temperature prefabricated screens-contours and, accordingly, rear convective circuits with fins and swirls, and the tubular heat-releasing element is equipped with a radially located vertical plate on which the front lower and upper collection are fixed s-screens contours and respectively rear convection loops thus swirlers disposed within the intersectional compounds. 2. The plinth heating device according to claim 1, characterized in that the swirlers in the external device of intersectional connections are made in the form of gaskets. 3. The plinth heating device according to claim 1, characterized in that the tubular heat exchange element with fins, the front, lower and upper prefabricated screens, contours and rear convective contours are made with double symmetry relative to the horizontal and vertical planes and mounted on a radially located vertical plate, and on its contact surfaces between the front assembly screens-contours and the rear convective circuits, a highly conductive adhesive mastic is applied. 4. A plinth heating device according to one of claims 1 to 3, characterized in that the section is made of cast iron, steel, aluminum and their alloys, and prefabricated contour screens are made of drawn sheet aluminum or non-metallic material.

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