AT395780B - WATER HEATER - Google Patents

Description

AT 395 780 B

The present invention relates to a water heater with a jacket surrounded by a hollow and water-guiding jacket having a rectangular outline, arranged above a combustion chamber with a burner and consisting of individual members, these mutually parallel individual members of the heat exchanger in the space enclosed by the jacket Exhaust gas routing of the combustion chamber is attached and extends over the shorter side of the rectangle.

Such a water heater in the form of a boiler has become known from DE-OS 3 228 953. This is a conventional sectional boiler, the individual links being welded sheet steel structures. The manufacturing effort of such welded individual links is considerable.

From DE-OS 2 814 614 a boiler has become known in which the jacket is hollow, water-bearing and has a rectangular plan. Such a central heating boiler has also become known from DE-OS 2 756 955.

From DE-OS 3 339 225 a central heating boiler has become known, which represents a welded construction. Here, a burner is laterally delimited by two water-bearing hollow profiles, another hollow profile is arranged above the burner. All hollow profiles carry water. A special, quite expensive manufacturing process is necessary for the welded hollow profiles.

Finally, from DE-OS 3 406 503 a gas boiler has become known which has a heat exchanger consisting of finned tubes at the upper end of a combustion chamber. The pipes go through and are hydraulically bound at their ends for the water to be heated in them.

DE-OS 3 509 570 shows a boiler with a main heat exchanger, which consists of individual segments joined together laterally, and an additional exhaust gas heat exchanger, which consists of finned tubes which are not divided.

A heating boiler has become known from DE-OS 3 102 441, the heat exchange body of which essentially consists of corrugated plates which, arranged next to one another, produce the actual heat exchanger.

DE-OS 3 100 625 shows a gas boiler with individual heat exchange elements arranged side by side, which consist of profiled sheet metal blanks and are arranged side by side.

DE-OS 3 109 899 shows a heating boiler with secondary heat exchanger, which is arranged above the actual main heat exchanger. DE-OS 3 339 932 shows a gap heat exchanger with webs, the individual heat exchanger elements being joined together in a plate-like manner.

The present invention has for its object to vary the performance of the water heater by adding further or removing individual elements, without having to make massive changes to the structural design of the same.

The object is achieved according to the invention in that the individual members are supported on the longer rectangular side of the jacket and in that the lower part of the jacket has a recess for the attachment of a burner plate both on its longer and on its shorter side.

This configuration has the advantage that a simple hanging or removing the individual elements of the heat exchanger parallel to each other and in such a way that they are supported on the longer rectangular side of the jacket, makes it possible to vary the output of the water heater or boiler

The alternative recess for attaching a burner plate means that burners of different outputs and burner geometry can be arranged, which also make replacement easy in the event of service.

In an embodiment of the invention, it is proposed that the upper edge of the individual member shoulders projecting on both sides for resting on the upper edge of the jacket and that connections should be provided in the shoulders for water-carrying connection with the cavities of adjacent individual members. This configuration enables particularly simple assembly of the individual links, at the same time making the hydraulic connection easier.

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

The water heater according to the invention essentially consists of a hollow, water-carrying jacket (1) forming a box, which surrounds a combustion chamber (2) and a heat exchanger consisting of plate-shaped individual members (3).

These, for example in die-cast aluminum that can be produced from individual members (3), are suspended in the space (5) of the exhaust gas duct of the combustion chamber (2) enclosed by the casing (1), with shoulders (4) projecting on both sides at the top of the Support the jacket (1). Of the individual elements (3) to be strung together in a selectable number, and for the sake of simplicity, only three are shown, for example. However, such individual links can in principle be hung in the room (5) in any number and arbitrarily selectable size (length) and at any distance from one another and thereby limit exhaust gas routings.

The jacket (1) has a rectangular plan, and the individual elements (3) extend parallel to one another over the shorter side of the rectangular corner.

On the lower part of the jacket (1), one can on each of its longer or shorter side have a recess (6) or (7) for attaching a plate carrying the burner (burner plate) -2-

Claims (2)

Provide AT 395 780 B. For example, the larger recess (6) for the attachment of an atmospheric burner, the smaller recess (7) for the attachment of a forced draft burner could alternatively be used. The individual links (3) consist of hollow, water-carrying plates, in the shoulders (4) of which connections (8) are provided for the water-carrying connection with the cavities of adjacent individual links. On their outer sides serving for exhaust gas routing, these individual members (3) are equipped with protruding profiles which favor heat exchange, for example pins (9), ribs or similar projections. All water-carrying elements and the jacket of the water heater are systematically connected to each other and can be included with a flow and return in a circulation system, for example a circulation heater. PATENT CLAIMS 1. Water heater with a heat exchanger consisting of a single member and enclosed by a hollow and water-guiding jacket with a rectangular plan, arranged above a combustion chamber with a burner, these mutually parallel individual members of the heat exchanger being hooked into the jacket-enclosed space of the flue gas duct of the combustion chamber are and extend over the shorter side of the rectangle, characterized in that the individual elements (3) are supported on the longer side of the rectangle of the casing (1) and that the lower part of the casing (1) depending on both its longer and its shorter side has a recess for the attachment of a burner plate. 2. Water heater with individual members formed from a water-bearing hollow plate according to claim 1, characterized in that the upper edge of each individual member (3) on both sides projecting shoulders (4) for resting on the upper edge of the jacket (1) and that in the shoulders (4) Connections are provided for the water-carrying connection with the cavities of adjoining individual links (3). For this 1 sheet drawing -3-