DE8802942U1 - Water heater with a heat exchanger consisting of individual elements and individual elements for such a heat exchanger - Google Patents

Description

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VfohV Vaillant GeembH

SW654 7.3.1988

Water heater with a heat exchanger consisting of individual elements and individual elements for such a ^heat exchanger

The invention relates to a water heater with a heat exchanger consisting of individual elements, surrounded by a jacket and arranged above the combustion chamber.

The object of the invention is to design these individual elements and to arrange them within the water heater in such a way that they distribute their heat as evenly as possible over the entire cross-section of the exhaust gas ducts and are able to extract it as far as possible from the exhaust gases of the burner and are thus able to effectively cool the combustion chamber over its entire cross-section.

In addition, the invention aims to be able to vary the capacity of a water heater of the type described above with as little effort as possible and to adapt it easily to different local conditions and different requirements from case to case.

According to the invention, the individual elements of the heat exchanger are suspended in the space enclosed by the jacket of the exhaust gas duct of the combustion chamber.

This measure opens up the possibility of accommodating any number of such individual elements within this space at any spacing * |

and thereby determine the capacity of the water heater. \

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According to a preferred embodiment of the subject matter of the invention, the jacket of the combustion chamber and the heat exchanger above it are hollow and water-conducting and thus also serve for heat exchange between the exhaust gases and the water to be heated as well as for cooling the combustion chamber. This results in the advantage that the entire unit serving the convection is located above a combustion chamber that has already been pre-cooled by the jacket and is itself surrounded by this cooling jacket.

The loose accommodation of the individual elements of the heat exchanger according to the invention within a box made of a cast piece or sheet metal with water-conducting walls also offers the advantage that the exhaust gas-conducting spaces between the individual elements of the heat exchanger can be variably and sensitively adapted to the respective requirements with regard to the heating output. Because the shape and dimensions of these individual elements inevitably also determine the shape and size of the combustion chamber below, its shape and size can be varied by choosing the individual elements.

An embodiment of the subject matter of the invention is shown in detail in the single drawing figure, in which further features of the invention are explained below.

The water heater according to the invention consists essentially of a hollow, water-conducting casing 1 forming a box, which encloses a combustion chamber 2 and a water heater housing made up of plate-shaped individual elements 3.

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The individual elements 3, which can be manufactured from die-cast aluminum, are suspended in the space 5 of the exhaust duct of the combustion chamber 2 enclosed by the casing 1, whereby they are supported by shoulders 4 projecting on both sides on the upper edge of the casing 1. For the sake of simplicity, only three of the individual elements 3, which can be arranged in a selectable order, are shown as examples. However, such individual elements can in principle be suspended in the space 5 in any number and any size (length) and at any distance from one another, and thus limit exhaust ducts of any width.

The shell 1 has a rectangular floor plan and the individual elements 3 extend parallel to each other across the shorter side of the rectangle and are supported on the longer side of the rectangle.

On the lower part of the casing 1, a recess 6 or 7 can be provided on its longer or shorter side for the attachment of a plate carrying the burner (burner plate). For example, the larger recess could be used for the attachment of an atmospheric burner, the smaller recess for the attachment of a fan burner.

The individual elements 3 consist of hollow, water-bearing plates, in whose shoulders 4 connections 8 for the water- /clock connection with the cavities are located adjacent to each other.

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laid individual elements are provided. On their outsides serving the exhaust gas duct, these combined elements 3 are provided with the external profiles that promote heat exchange.

I Jings, e.g. tenons 9, ribs or similar projections I fitted.

« All water-bearing elements and the dumbbell of the

f Wet heaters are systematically connected

I and can be connected with a forward and return line in a circuit

% system, e.g. a circulating heating system, can be included.

Claims (2)

f &igr; trfi · ( « a·· ■· · JoIi. VaH 1 ant GmbH u. Co Gft654 7.3.1988 - 1 claims Water heater with a heat exchanger which is enclosed by a jacket and arranged above a combustion chamber and consists of individual elements, whereby these individual elements of the heat exchanger are suspended in the space enclosed by the dumbbell of the exhaust gas duct of the burner chamber, characterized in that the dumbbell (1) is hollow and water-conducting, that the dumbbell (1) has a rectangular outline and that the individual elements (3) extend parallel to one another along the shorter rectangular side and are supported on the longer rectangular side of the jacket (1) and that the lower part of the dumbbell (1) has two - alternatively usable - recesses (6 and 7) for the attachment of a combustion heating plate on both its longer and shorter sides. ' · - M 2. Water heater according to claim 1, characterized in that the individual element consists of a water-conducting hollow plate (3), the upper edge of which has shoulders (4) projecting on both sides for resting on the upper edge of the casing (1) and that in the shoulders :: x f; O &bull; · I It I » It 11 (4) Connections for water-conducting connection with the cavities of adjacent suspended individual elements (3) are provided.