EP0930473A2 - Heater, designed as boiler and/or instantanious heater - Google Patents

Abstract

The heater has a combustion system (20) for fossil fuel and includes a combustion chamber (3) and has cladding in the fireplace which consist of a combination of flat glass and/or glass ceramic moldings (24,25), with flat sheet metal parts (26a, 26b) and flat glass and/or glass ceramic molded parts at least near the burner compartment (3). The glass/ceramic molded parts have large surfaces which are flat, curved or corrugated.

Description

The invention relates to a heating device, designed as a floor heating and / or continuous flow heater, with a fossil fuel burning system, which has a combustion chamber for carrying out the thermal process, and with cladding device superstructures.

In the production area of floor heating and / or instantaneous water heaters developed a cross-vendor product standard. This leads to a Market situation with predominantly optically and technically equivalent Products from different manufacturers and for end customers hardly anymore manufacturer-differentiating technical product features.

The focus of the manufacturers is on the optimized calorific value System technology and the production engineering optimized housing constructions. An external product variance is practically only through technical Detailed designs in the sheet metal cladding.

In addition, the known products offer poor integration options in the living environment.

• das Preis-Leistungs-Verhältnis
• die Effektivität des Brennersystems

A central purchasing decision is:

• price-performance ratio
• the effectiveness of the burner system

It is therefore essentially traditional in the known products Product concepts and structures recorded. For product and Manufacturer differentiation is therefore no delimiting design and Surface solutions available.

The invention is based, for the above-mentioned task Warming device, designed as a floor heating and / or water heater new safety-improved and very user-friendly material concept to create innovative technical design approaches and new ones Enables product concepts.

This object is achieved according to the invention in that the Device superstructures from a combination of flat glass and / or Glass ceramic molded parts with flat sheet metal parts exist, with flat glass and / or Glass ceramic molded parts at least in the area of the combustion chamber.

• eindeutige Produkt-Herstellerdifferenzierung
• bessere Integration der Geräte ins Wohnumfeld

gegeben.Through the innovative use of other materials in the form of the flat molded parts made of glass and / or glass ceramic, as well as through new design concepts, new technical product solutions as well as technical design approaches can be realized, completely apart from the new design options. This is particularly one

• clear product-manufacturer differentiation
• better integration of the devices into the living environment

given.

There are heating devices of the aforementioned type known, which in Combustion chamber area a small window for occasional observation of the Have a flame when burning the fossil fuel. In case of However, the invention finds a large-area glass or glass ceramic molded part Application that serves as cladding for the combustion chamber and the overall appearance of the heater significantly influenced, and that observation of the entire flame pattern, permanently designed, at the same time the perfect functionality of the burner and its Setting can be checked and adjusted if necessary.

Glass or glass ceramic is a versatile material. Printing and coatings of glass and glass ceramic parts to change the Optical properties and surface design are state of the art.

Glass and glass ceramic panes can be cut and cut to different sizes curved shapes can be produced. According to one Development of the invention consisting of glass and / or glass ceramic Molded parts of the superstructures are flat, and / or curved, and / or curled.

According to a development of the invention are preferably mechanical Construction elements for fastening molded parts and designing Material transfers provided. These moldings can Device structures by clamping and / or screwing together be connected

Profile or frame structures are preferred in the combustion chamber area for mechanical fastening of molded parts of the device superstructures applied.

The molded parts of the device superstructures are in the low temperature range preferably connected by gluing.

According to one embodiment of the invention, the transition between two Molded parts preferably seals, in particular silicone or glass fiber or Mineral fiber seals, provided. In addition to the sealing transition such seals also provide the necessary expansion compensation thermally stressed molded parts that have a different Have coefficients of expansion.

According to one embodiment of the invention, the combustion chamber area takes place preferably a glass ceramic molded part or a temperature-resistant glass molded part with an extremely high thermal load capacity, the very high Can withstand temperature differences and even at the highest Operating temperatures maintain an excellent dimensional stability for the device superstructures Application.

The glass moldings of the device superstructures are made according to others Embodiments of the invention preferably from a chemical and thermally resistant borosilicate glass with a very low Expansion coefficient or from a thermally toughened soda-lime glass, that is easily deformable and particularly resistant to Temperature scocks and mechanical loads is formed. The latter glass can therefore also be used in areas of higher temperature, also in Combination with the mentioned glass ceramic molding.

The glass or glass ceramic molded parts for cladding the combustion chamber can be realized in different ways. A preferred one Embodiment is that as a molded part for the combustion chamber composite unit is provided, consisting of at least two sandwiched spaced moldings, of which the molded part made of high-temperature-resistant glass ceramic facing the combustion chamber or temperature-resistant glass and the outer molded part made of thermal toughened soda-lime glass.

With such a configuration of the device structures, one can achieve a particularly low temperature on the outer surface of the cladding.

According to a further embodiment of the invention, this can be done in this way be that a corrugated as a molding for the combustion chamber high-temperature resistant glass ceramic or glass molding is provided.

According to a third embodiment, this can also be done that as a clad molding for the combustion chamber a flat or curved Molded part made of high temperature resistant glass ceramic or temperature resistant glass in mechanical connection with a series of side by side circular arc tube sections made of glass, preferably made of Borosilicate glass is provided.

Even with such an embodiment, one can also relatively low temperature on the outer surface of the combustion chamber achieve molding part, apart from the special aesthetic Impression that such an embodiment gives.

According to a development of the invention, the combustion chamber of the Heater on the front in the area of thermal processes with open Flame with a multi-pane molded part made of glass and / or glass ceramic completed, being spaced from this molding and the others Combustion chamber linings a front part is attached. To this This creates an open multi-pane system with convection, what has a favorable effect on the thermal load on the device structures.

The end front part of such an embodiment can be a closed glass molded part or it can consist of three molded parts, namely from a molded glass part in the combustion chamber area and one each above and below the sheet metal part attached.

In this way, various design options are available.

To provide access to the inside of the heater, this is End front part, preferably by means of hinges on the device housing struck.

Further refinements of the invention and advantages result from the Description of exemplary embodiments shown in the drawings.

Fig. 1

in schematisisierten Gesamtdarstellungen Geräteaufbauten (A - H) mit einer Kombination aus unterschiedlich ausgebildeten flächigen Glas- und/oder Glaskeramikformteilen mit flächigen Blechteilen,

Fig. 2

den Aufbau eines Mehrscheiben-Sichtfensters für die Wärmegeräte nach Fig. 1,

Fig. 2 A

eine Draufsicht auf das Mehrscheiben-Formteil nach Fig. 2,

Fig. 2 B

eine schematische Darstellung der Temperaturverteilung bei einer Versuchsanordnung mit einem Mehrscheiben-Formteil,

Fig. 3

eine Brennraumverkleidung, gebildet durch ein gewelltes Glaskeramik-Formteil,

Fig. 4

in vier Ansichten A bis D eine weitere Ausführungsform für ein Brennraumverkleidungs-Formteil, zusammengesetzt aus einem Glaskeramik-Formteil und kreisbogenförmigen Rohrabschnitten aus Borosilicatglas,

Fig. 5

verschiedene Montagehalbzeuge für die Verbindung der Formteile bei dem Aufbau der Wärmegeräte,

Fig. 6

eine Ausführungsform eines Wärmegerätes mit einem offenen Mehrscheibensystem mit Konvektionsanteil in einer Konzeptdarstellung,

Fig. 7

eine erste Variante zur Realisierung des Konzeptes nach Fig. 6 mit einer Frontverkleidung in Form eines durchgehenden Glas-Formteiles,

Fig. 8

eine zweite Variante zur Realisierung des Konzeptes nach Fig. 6 mit einer dreigeteilten Frontfläche, bestehend aus einem Glaskeramik-Formteil auf Höhe des Brennraumes sowie einem darüber und darunter angeordneten Blechformteil,

Fig. 9

ein weiteres technisches Gestaltungskonzept des Wärmegerätes mit einer optional zuschaltbaren Flamme, mit einer schematisierten perspektivischen Gesamtdarstellung (Ansicht A), und mit Schnittansichten B, C für zwei Varianten,

Fig. 10

eine schematisierte, tiefer durchkonstruierte Schnittansicht der Konzeption nach Fig. 9 mit der Zusatzflamme, am Beispiel einer durchgehenden Glasfront,

Fig. 11

eine Darstellung entsprechend Fig. 10, jedoch mit einer dreigeteilten Blech/Glas/Blech-Front, und

Fig. 12

eine Ausführungsform für eine Ausführung der Etagenheizung als Standgerät in drei Varianten A - C.

Show it:

Fig. 1

In schematic overall representations, device structures (A - H) with a combination of differently shaped flat glass and / or glass ceramic molded parts with flat sheet metal parts,

Fig. 2

the construction of a multi-pane viewing window for the heating devices according to FIG. 1,

Fig. 2A

3 shows a plan view of the multi-pane molded part according to FIG. 2,

Fig. 2B

1 shows a schematic representation of the temperature distribution in a test arrangement with a multi-pane molded part,

Fig. 3

a combustion chamber cladding formed by a corrugated glass ceramic molded part,

Fig. 4

in four views A to D a further embodiment for a combustion chamber cladding molded part, composed of a glass ceramic molded part and circular arc-shaped tube sections made of borosilicate glass,

Fig. 5

various assembly semi-finished products for the connection of the molded parts in the construction of the heating devices,

Fig. 6

An embodiment of a heating device with an open multi-pane system with convection portion in a conceptual representation,

Fig. 7

6 with a front cladding in the form of a continuous molded glass part,

Fig. 8

6 with a three-part front surface, consisting of a glass ceramic molded part at the level of the combustion chamber and a sheet metal molded part arranged above and below it,

Fig. 9

another technical design concept of the heating device with an optionally switchable flame, with a schematic perspective overall view (view A), and with sectional views B, C for two variants,

Fig. 10

9 shows a schematic, deeper constructed sectional view of the concept according to FIG. 9 with the additional flame, using the example of a continuous glass front,

Fig. 11

a representation corresponding to FIG. 10, but with a three-part sheet / glass / sheet front, and

Fig. 12

an embodiment for a version of the floor heating as a standing device in three variants A - C.

Fig. 1 shows in eight schematic perspective representations A - H eight different designs for cladding devices of the heater according to the invention, designed as Floor heating with or without instantaneous water heater function or Instantaneous water heater.

As already shown, the device concept according to the invention is based on the Construction basis of a combination of glass and / or glass ceramic and / or Sheet metal parts, for the designer a wealth of Combination options are available, of which in Fig. 1st For example, eight typical variants for displaying the housing with Glass / glass ceramic molded parts and sheet metal molded parts are shown.

In the figure parts A to C, three variants are different trained sheet metal parts 1 in combination with a flat, vertical elongated flat glass and / or glass ceramic molded part 2 shown. The molded parts 1 and 2 in the three variants are different in detail shaped, but because they have the same functions, The same reference numerals for simplicity.

Preferably, as shown in variant C, the device structure is like this made that the glass or glass ceramic molded part 2 is detachably arranged, so as to provide access to the combustion chamber 3.

In the figure parts D to H are different for five variants bent sheet metal parts 1 horizontally extending glass or glass ceramic molded parts 2 provided. Variant D is the glass or glass ceramic molded part 2 bent at the ends according to the housing design. At variant E, the glass or glass ceramic molded part 2 is flat, i.e. flat trained, while in variant F a corrugated glass-glass ceramic molding 2 is provided. The G and H variants have the front front of the housing structures are bent, so that the glass-glass ceramic molded part 2 is curved. This glass or Glass ceramic molded parts 2 are in the embodiments according to the Figure partial views G and H of different widths, with additional in the Embodiment G above and below the glass or glass ceramic molded part 2 attached panels 2 a and 2 b also from one Glass or glass ceramic molded part exist.

In the variants according to the figure views D to H, the glass or Glass ceramic molded parts 2 are preferably arranged at the level of the combustion chamber, in which the thermal process is carried out. This is one Visualization and monitoring of the thermal process possible.

The glass or glass ceramic molded parts 2 are also in the variants D to H preferably arranged releasably, as can be seen from the representation F. The arrangement can also be made so that the glass or Glass ceramic molded part 2 is pivoted like a door.

Another possibility of attachment is that the glass or Glass ceramic molded part can be moved vertically on the load-bearing housing structures is appropriate.

Just as in the embodiment according to view G can also in the other housing variants, other housing parts made of glass or glass ceramic molded parts consist.

As already shown, the combustion process comes into view covering the burner area is of decisive importance at, preferably viewing panels from a multi-layer panel system made of glass / glass ceramic molded parts.

FIG. 2 shows the structure of a Such two-disc molded part 4, in principle more than two disks can be used. The molded part 4 has on the Combustion chamber side a curved glass ceramic molding 5. In Distance to this curved glass ceramic molded part 5 is a second curved molded part 6 made of thermally toughened soda-lime glass arranged.

Both bent molded parts 5, 6 are, as shown schematically in FIG. 2A represented by conventional connecting elements 7, mechanical and thermally permanent, spaced apart.

With such a two-pane door front part 4 as a panel for the Combustion chamber 3 can achieve a significant drop in temperature. The Fig. 2 B shows a temperature distribution, measured in test series with a Two-disc test setup with the flame at a distance from disc 5 of 20 mm and a mutual disc distance of 30 mm. The Outside temperature in the combustion chamber area only reaches a safe level Temperatures in the chosen experimental setup - approx. 60 ° C.

In Figure 3 is a trim molding according to the embodiment of the figure 1 F, formed by a corrugated glass ceramic molded part 4 a, enlarged shown. As is well known, glass ceramic plates can be hot worked, e.g. also wavy. Instead of a glass ceramic molded part, a corrugated glass part may be provided.

The molding 4a is framed in an adapted frame, not shown appropriate seals that also compensate for expansion.

FIG. 4 shows a further embodiment for a in four views A-D Composite molded part as combustion chamber cladding. From a Borosilicate tubing or soda-lime glass are arc-shaped Pipe sections 8 divided (view A), which according to the representation B to be strung together. The raw sections B are lined up with a variant for a flat combustion chamber cladding (illustration C) a flat combustion chamber-side glass ceramic plate 9 in connection with a Frame construction 10 assembled into a flat unit.

In the variant according to view D for a curved combustion chamber cladding are the pipe sections 8 with a curved combustion chamber side Glass ceramic plate 11 in connection with a special frame construction 12 assembled into a curved unit.

Also with the version according to Figure 4 with the two sub-variants special seals in the frame constructions for one Expansion compensation in addition to the tight connection of the molded parts.

As can be seen from the embodiments according to FIGS. 1 to 4 due to the different molded parts, which are also available in different cuts and curved shapes can be made, an abundance of novel ones technical design approaches can be realized. Since the molded parts from the Assembly perspective can also be seen as modular semi-finished products, enables the semi-new technology to reduce the product and Assembly costs.

Due to the possibility of multi-pane systems, that is also possible Security requirements met to a high degree.

The use of glass ceramic materials offers optimal material qualities for use in the high temperature range.

For connecting the molded part modules in the low temperature range preferably worked with adhesive techniques, e.g. with silicone-based adhesives.

For the connection of the molded part modules in the high temperature range preferably frame and profile constructions for fastening the molded part modules used.

In addition to individual assembly by gluing, clamping and screwing (e.g. on a frame construction), the market offers a variety of Fittings and semi-finished products available for assembly, some of which are shown by way of example in FIG. 5.

Profile seals 13, clamping rails 14, profiles are shown (Framing) 15, and three different angle connectors 16-18, wherein also (not shown) hinges and adapters for pipe mounting apply occasionally.

In addition to mechanical attachment, a variety of commercially available Construction elements are used to design material transitions, e.g. Silicone, fiberglass or mineral fiber seals.

The surfaces of the glass or glass ceramic molded parts are also versatile customizable, e.g. by printing and coating or by mechanical processes, e.g. Sandblasting.

In Fig. 6 is a perspective schematic diagram in two views the figure part A and a basic sectional view according to the Figure B shows a special embodiment of the invention Heater shown.

The heater attached to a wall 19 as usual has a Burner system 20 for fossil fuels with a combustion chamber 3 for Implementation of the thermal process in which the fossil fuel, in particular natural gas, burns with an open flame 21.

The heater also has baffles 22 for exhaust gas routing, as by the Arrows shown in view A, the heat exchanger for Hot water preparation for the heating or the domestic water of the For clarity is not shown.

The front panel of the heater consists of three molded parts, namely the glass or glass ceramic molded parts 24 and 25 in the combustion chamber area, the molding 25 spaced from the front molding 24 at the level of Baffle 22 is arranged, and the upper and lower cladding Moldings 26 a and 26 b. These upper and lower mold parts 26 a, 26 b consist of either sheet metal parts or molded glass parts made of thermal tempered soda-lime glass. The molded part 24 preferably consists of a glass molding made of thermally toughened soda-lime glass, whereas the inner molded part 25, as will be explained with reference to FIGS. 7 and 8 is a one-pane molded part made of glass ceramic or temperature-resistant glass, or a multi-pane system made of a glass ceramic pane with a Borosilicate glass pane or a thermally tempered soda-lime glass pane is.

Thanks to the combination of glass ceramic and temperature-resistant glass a system structure is created that meets the requirements Guaranteed temperature reduction on the outer pane 24.

The conceptual integration into the combustion chamber design will make it Flame pattern visible to the outside and can therefore be monitored at any time.

6 are also alternative designs the outer casing of the device.

In Figures 7 and 8, two views A and B are two Variants for the technical implementation of the device concept according to FIG. 6 shown.

View A shows an overall perspective view of the Heating device, whereas view B is a basic sectional view shows.

In the heating device in the variant according to FIG. 7 there is the front cladding 27 made entirely of glass, which is detachably connected to a sheet metal housing 28, preferably by means of appropriate hinges on the sheet metal housing is struck.

The burner system 20 with the lines 20 a for the supply of the fossil Fuel and the open flame 21 rests on a cast iron Base frame 29. In the combustion chamber 3 is a heat exchanger 30 of the usual Provided type for water heating, the water in tubes 30 a flows, which are heated by the flames 21. Above the Heat exchanger 30 is, predetermined by the baffle 22, the Exhaust pipe 31. A molding 25 is provided for cladding the combustion chamber 3 provided that by means of screws 32 and 32 a on the cast iron Base frame 29 or the guide plate 22 is attached. This molding 25 can from a single pane of glass ceramic or temperature-resistant glass or a two-pane system consisting of a glass ceramic pane with one Glass pane exist, both of which are contained in a frame as a unit. The The front is a continuous glass front, with a continuous Glass pane 27, as shown in Fig. 7, part A, light is bent. This windshield 27 is preferably with a course to Viewing window 25 printed in a manner similar to that used in automotive technology, as in the view B is expressed by the lines 33 of different lengths.

At the top, the heating device is completed by sheet metal profiles 34 and 35 similar to that of hinges for the pivotable fastening of the glass front a door are attached.

The embodiment of FIG. 8 differs from that 7 essentially by the different design of the front surface. While in the case of FIG. 7 a continuous glass front 27 is provided in the embodiment of Fig. 8, a three-part front panel provided, consisting of the glass molding 24 in the combustion chamber area and the upper and lower front panels 26 a and 26 b analogous to FIG. 6 from sheet metal parts. The glass front pane 24, which practically serves as a viewing window, is according to the oven technology with the sheet metal cladding 26 a and 26 b glued and partially painted.

In the embodiment according to FIG. 8, too, the entire is preferably Front paneling with molded parts 24 and 26 a and 26 b with one Standard hinge technology on the associated sheet metal parts or sheet metal profiles 35 struck.

A further technical design concept is shown in FIG. 9 and using the example of an open multi-pane system with convection as shown in FIG. 6.

The central difference to the arrangement according to Fig. 6 is that in the 9 by a separately switchable section 20 b of Burner system 20 an additive, separately switchable from the flames 21 Additional flame 36, preferably in the form of a row of flames, is provided. View A shows this row of flames in a schematic Perspective representation, analogous to the representation in Fig. 6. Instead of one A row of flames can also be a burning surface, designed as a burning mat, be provided.

In the variant according to view B, the additive additional flame 36 is shown in FIG Combustion chamber 3 integrated, i.e. there is a closed burner system, whereas in variant C an open burner system is present because the additive row of flames 36 by an additional exhaust gas baffle 37 of the combustion chamber 3 with the (not shown) Heat exchanger is disconnected.

When using an additive additional flame, its can Combustion heat can also be used as a direct heating source (stove effect). In the open burner system, according to view C, the Combustion heat of the additive flame series directly in the sense of a Additional heating function when main burner 21 is switched off, e.g. as Summer heating.

The principle of the additive additional flame is independent of the constructive one Execution of the outer shell of the heating device according to the invention. It can, as in FIG. 9, and in a greater structural opening depth in FIG. 11 shown, a three-part sheet / glass / sheet metal front 26 a, 24, 26 b, analogous to Representation in Fig. 8 may be provided. But it can also according to the constructive details showing principle longitudinal section according to Fig. 10 analogous to the representation in FIG. 7, a continuous glass front 27 be provided.

Device versions according to FIG. 1 can also be provided.

In the embodiments described so far, those are shown Warmers designed as wall units.

However, the new technical design variance also allows one Execution of the floor heating as a standing device 37, as in FIG. 12 is shown as an example. In this embodiment, one is Sheet / glass / sheet front 26 a, 24 and 26 b shown analogous to FIG. 11. It can also be a continuous glass front 27 as shown 10 may be provided.

This version of the floor heating as a standing device 37, i.e. the one Floor heating provided all around, allows the construction of Multifunctional furniture e.g. for the bathroom area according to the view according to Fig. 12 B for the example of a cabinet with storage compartments.

Is the floor heating additionally with an optional switchable flame row provided analogously to the representation in Fig. 9, then the floor heating can burner switched off by the direct heat utilization of the Additional flames can be used as room summer heating, especially for the living area according to the view C in Fig. 12, wherein the Additional flame row visually creates a chimney effect. Also in In this case, there is therefore a for the living area by the floor unit multiple mobile function.

Claims (24)

Heating device, designed as a floor heating and / or water heater, with a combustion system (20) for fossil fuels, which has a combustion chamber (3) for carrying out the thermal process, and with cladding device structures, characterized in that the device structures from one Combination of flat glass and / or glass ceramic molded parts (2; 4; 4 a; 8, 9; 8, 11; 24, 25; 27) with flat sheet metal parts (26 a, 26 b), with flat glass and / or glass ceramic molded parts (2, 25) at least in the area of the combustion chamber (3). Heating device according to claim 1, characterized in that the glass-glass ceramic molded parts of the device superstructures are large and flat. Heating device according to claim 1, characterized in that the glass-glass ceramic molded parts of the device superstructures are large and curved. Heating device according to claim 1, characterized in that the glass-glass ceramic molded parts of the device superstructures are large and corrugated. Heating device according to one of claims 1 to 4, characterized in that mechanical construction elements (13-18) are provided for fastening molded parts and designing material transitions. Heating device according to claim 5, characterized in that the molded parts of the device structures are connected to one another by clamping and / or screwing. Heating device according to claim 5 or 6, characterized in that profile or frame constructions are provided for the mechanical fastening of molded parts of the device structures. Heating device according to one of claims 1 to 7, characterized in that molded parts of the device structures are connected to one another by gluing. Heating device according to claim 5, 6 or 7 , characterized in that seals, preferably silicone, glass fiber or mineral fiber seals, are provided in the transition between two molded parts. Heating device according to one of claims 1 to 9, characterized in that the surfaces of molded parts are printed and / or coated and / or have undergone another surface treatment. Heating device according to one of claims 1 to 10, characterized in that in the high-temperature range a glass ceramic molded part with an extremely high thermal load capacity (> 200 ° C) with excellent dimensional stability, which can also withstand very high temperature differences (> 100 ° C) finds. Heating device according to one of claims 1 to 11, characterized in that molded glass parts consist of a chemically and thermally resistant borosilicate glass with a very low coefficient of expansion. Heating device according to one of claims 1 to 12, characterized in that molded glass parts are made of thermally toughened soda-lime glass. Heating device according to one of claims 1 to 13, characterized in that a composite unit (4, 25) is provided as a molded part for cladding the combustion chamber (3), consisting of at least two molded parts (5, 6) spaced apart from one another in a sandwich-like manner which the molded part (5) facing the combustion chamber (3) consists of high-temperature-resistant glass ceramic or temperature-resistant glass and the outer molded part (6) consists of thermally toughened soda-lime glass. Heating device according to one of claims 1 to 13, characterized in that a corrugated, high-temperature-resistant glass ceramic or glass molded part (4 a) is provided as the molded part for cladding the combustion chamber. Heating device according to one of claims 1 to 13, characterized in that as a molded part for cladding the combustion chamber (23), a flat or curved molded part (9, 11) made of high-temperature-resistant glass ceramic or temperature-resistant glass in mechanical connection with a number of circular-arcuate tubular sections ( 8) Borosilicate glass or soda-lime glass is provided. Heating device according to one of claims 1 to 13, characterized in that the combustion chamber (3) is closed at the front in the area of the thermal processes with an open flame (21) with a single-pane or multi-pane molded part (25) made of glass / glass ceramic, and in that spaced from this molded part (25) and the other combustion chamber linings (22) a front end part (24, 25, 26; 27) is attached. Heating device according to claim 17, characterized in that the end front part is a closed glass molded part (27). Heating device according to claim 17, characterized in that the end front part consists of a molded glass part (24) as a combustion chamber cladding and a sheet metal part (26 a, 26 b) attached above and below it. Warming device according to one of claims 17 to 19, characterized in that the closing front part (24, 25, 26; 27) is hinged to the device housing (34, 35) by means of hinges. Heating device according to one of claims 1 to 20, characterized in that the combustion system (20, 21) has an optionally switchable section (20b) for an optionally switchable additional flame (36), in particular a row of flames or a burning surface, designed as a burning mat. Heating device according to claim 21, characterized in that the switchable section (20 b) with the additional flame (36) is integrated in the combustion chamber (3). Heating device according to claim 21, characterized in that a guide plate (37) is provided which separates the switchable section (20 b) with the additional flame (36) from the combustion chamber (3). Heating device according to one of claims 1 to 23, designed as a floor heating system, characterized in that the device is encased all around and is designed as a standing device (37).

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