GAS BURNER

Description

[0001] This invention concerns a gas burner.

[0002] A wide range of gas burner designs have been proposed over the years. Such gas burners can be used in a range of applications including cooking and heating.

[0003] For instance, US2012/0000456 A1 describes a gas burner according to the preamble of claim 1.

[0004] According to a first aspect of the invention there is provided a gas burner, the gas burner including a body defining a chamber, the body comprising a profiled integral member, with a plurality of ports being provided extending through a face of the body to provide a flame strip, with a combustion surface on the external side of the flame strip, the gas burner also including a frame member which is mounted to the body by a mechanical joint, characterised in that the gas burner is made of just the body, the frame member, and a layer of metal fibre mounted on the exterior side of the flame strip, the frame member comprising a peripheral strip defining a central opening, with a pair of support members extending across the opening, a flange being provided around the body, the body being mounted to the frame member by the edges of the peripheral strip being pressed around the flange.

[0005] The body may comprise an at least generally planar part defining the flame strip, and side walls extending from the planar part, with the flange provided at opposite ends of the side walls from the planar part. The flame strip may be domed.

[0006] The metal fibre may be provided on only a part of the flame strip. The metal fibre may be provided on just a central part of the flame strip. The metal fibre may be mounted to the body by spot welding.

[0007] According to a second aspect of the invention there is provided a method of forming a gas burner according to claim 7.

[0008] The body and frame member may be mounted together by pressing.

[0009] A flange may be provided on the body, and the frame member may be profiled to engage on either side of the flange to provide a mechanical joint therebetween.

[0010] Metal fibre may be mounted on an external side of the flame strip. The metal fibre may be mounted on the flame strip by spot welding. The metal fibre may be mounted on the flame strip prior to shaping of the planar material to form the body.

[0011] Embodiments of the present invention will now be described by way of example only and with reference to the accompanying drawings.

Fig. 1 is a sectional view through part of a first gas burner according to the invention;

Fig. 2 is a diagrammatic cutaway perspective view of the burner of Fig. 1;

Fig. 3 is a plan view of the burner of Fig. 1; and

Fig. 4 is a similar view to Fig. 3 but of a second burner according to the invention.

[0012] Figs. 1 to 3 show a gas burner 10 of a type useable for instance in a central heating boiler, a cooking appliance or otherwise. The gas burner comprises a body 12 formed of an integral profiled sheet 14 of an appropriate metal. The body 12 has an upper slightly raised area which defines a flame strip 16 with a combustion surface on the external side of the flame strip 16.

[0013] A layer of metal fibre 17 is mounted on the flame strip 14.

[0014] A plurality of ports 18 are provided through the flame strip 16. The ports 18 may be in the form of circular holes or slots, or a combination of the two, or other shaped openings. A flange 20 is provided around the body 12 at the edges thereof away from the flame strip 16.

[0015] A frame 22 is provided on the burner 10. The frame 22 comprises a peripheral strip 24 defining a central opening 26, with a pair of support members 28 extending across the opening 26. The body 12 is mounted to the frame 22 by the edges of the peripheral strip, being pressed around the flange 20.

[0016] This therefore provides a gas burner made of just two components the body 12 and frame 22, and a layer of metal fibre 17, with the body 12 mounted to the frame 20 just by mechanical means, alleviating the need for any welding or similar processes. Providing an integral flame strip with the body, means that only two components are required, and there is no requirement for mounting a separate flame strip to the body.

[0017] During manufacture the ports 18 may be formed in the sheet 14. The sheet 14 can then be profiled to form the body 12. The frame 22 can be mounted on to the body by pressing edges of the frame on to the flange as shown in Fig. 1.

[0018] In many situations it may be required to provide metal fibre on at least part of the flame strip 16.

[0019] In Figs. 1 to 3 the metal fibre 17 extends across just a central portion of the flame strip 16, as is indicated by the lighter shaded ports 18 in Fig. 3, with a row of ports 18 at each end and side not covered by the metal fibre 17.

[0020] Fig. 4 shows a second gas burner 28 with a layer of metal fibre 30 extending wholly across the flame strip 16 and covering all of the ports 18. The metal fibre 17, 30 may be mounted to the body 12 by spot welding, and could be mounted on to the flame strip 16 during manufacture and prior to shaping of the body 12. As shown in Fig. 4, in some instances the metal fibre 17, 30 is required to only cover a part of the flame strip 16, and may for instance only be required to cover a central part of the flame strip 16.

[0021] The metal fibre is used to reduce or substantially eliminate noise or resonance during use of the burner. Leaving some of the ports uncovered by the metal fibre, provides for a retention of flame for instance with lean or poor gases, and thereby avoids nuisance shutdown of the burner.

[0022] There are thus described gas burners which require a reduced number of components relative to existing designs, thereby reducing manufacturing costs. Spot welding is only required for mounting metal fibre where required, and a significant cost, time and power requirement savings are made by using pressing rather than welding to mount together the body and the frame.

[0023] As welding of the body does not take place it may be possible to use thinner material than would otherwise be the case for the body. The peripheral mechanical join has been found to provide an improved seal around the body and frame, relative to conventional welding.

[0024] Various other modifications may be made without departing from the scope of the invention. Whilst a rectangular burner is illustrated here, it is to be realised that the invention can be used with a wide range of burner shapes, sizes and types. The ports may take any appropriate form.

[0025] Whilst pressing the frame on to a flange of the body has been described. Other mechanical joints could be provided between the body and frames.

Claims

1. A gas burner, the gas burner 10 including a body 12 defining a chamber, the body 12 comprising a profiled integral member 14, with a plurality of ports 18 being provided extending through a face of the body 12 to provide a flame strip 16, with a combustion surface on the external side of the flame strip 16, the gas burner 10 also including a frame member 22 which is mounted to the body 12 by a mechanical joint, characterised in that the gas burner 10 is made of just the body 12, the frame member 22, and a layer of metal fibre 17 mounted on the exterior side of the flame strip 16, the frame member 22 comprising a peripheral strip 24 defining a central opening 26, with a pair of support members 28 extending across the opening, a flange 20 being provided around the body 12, the body 12 being mounted to the frame member 22 by the edges of the peripheral strip 24 being pressed around the flange 20.

2. A gas burner according to claim 1, in which the body 12 comprises an at least generally planar part defining the flame strip 16, and side walls extending from the planar part, with the flange 20 provided at opposite ends of the side walls from the planar part.

3. A gas burner according to claim 2, in which the flame strip 16 is domed.

4. A gas burner according to any of the preceding claims, in which the metal fibre 17 is provided on only a part of the flame strip 16.

5. A gas burner according to claim 4, in which the metal fibre 17 is provided on just a central part of the flame strip 16.

6. A gas burner according to any of the preceding claims, in which the metal fibre 17 is mounted to the body 12 by spot welding.

7. A method of forming a gas burner 10 according to any of the preceding claims, the method comprising forming a plurality of openings in a piece of planar material to define a flame strip 16 with ports 18 therethrough, mechanically shaping the planar material to define a body 12, and mounting the body 12 to a frame member 22 by forming a mechanical joint therebetween.

8. A method according to claim 7, in which the body 12 and frame member 22 are mounted together by pressing.

9. A method according to claims 7 or 8, in which a flange 20 is provided on the body 12, and the frame member 22 is profiled to engage on either side of the flange 20 to provide a mechanical joint therebetween.

10. A method according to any of claims 7 to 9, in which metal fibre 17 is mounted on an external side of the flame strip 16.

11. A method according to claim 10, in which the metal fibre 17 is mounted on the flame strip 16 by spot welding, and the metal fibre 17 may be mounted on the flame strip 16 prior to shaping of the planar material to form the body 12.

Ansprüche

1. Gasbrenner, der Gasbrenner (10) beinhaltet einen eine Kammer definierenden Körper (12), der Körper (12) umfasst ein profiliertes integrales Element (14), mit einer Vielzahl von Anschlüssen (18), die so vorgesehen sind, dass sie sich durch eine Vorderseite des Körpers (12) hindurch erstrecken, um eine Flammenleiste (16) bereitzustellen, mit einer Brennfläche an der äußeren Seite der Flammenleiste (16), der Gasbrenner (10) beinhaltet weiterhin ein Rahmenelement (22), welches am Körper (12) über eine mechanische Verbindung befestigt ist, dadurch gekennzeichnet, dass der Gasbrenner (10) nur aus dem Körper (12), dem Rahmenelement (22), und einer Schicht aus an der Außenseite der Flammenleiste (16) befestigtem Metallfaserstoff (17) gebildet ist, das Rahmenelement (22) umfasst eine eine zentrale Öffnung (26) definierende periphere Leiste (24), mit einem Paar von sich über die Öffnung erstreckenden Stützelementen (28), einen um den Körper (12) herum angeordneten Flansch (20), der Körper (12) wird am Rahmenelement (22) durch um den Flansch (20) herum gepresste Kanten der peripheren Leiste (24) befestigt.

2. Gasbrenner nach Anspruch 1, wobei der Körper (12) ein zumindest hauptsächlich ebenes Teil umfasst, das die Flammenleiste (16) definiert, und Seitenwände, die sich von dem ebenen Teil aus erstrecken, mit dem Flansch (20), der an zueinander entgegengesetzten Enden der Seitenwände des ebenen Teils vorgesehen ist.

3. Gasbrenner nach Anspruch 2, wobei die Flammenleiste (16) gewölbt ist.

4. Gasbrenner nach einem der vorstehenden Ansprüche, wobei der Metallfaserstoff (17) auf nur einem Abschnitt der Flammenleiste (16) vorgesehen ist.

5. Gasbrenner nach Anspruch 4, wobei der Metallfaserstoff (17) nur an einem zentralen Abschnitt der Flammenleiste (16) vorgesehen ist.

6. Gasbrenner nach einem der vorstehenden Ansprüche, wobei der Metallfaserstoff (17) durch Punktschweißen am Körper (12) befestigt ist.

7. Verfahren zum Formen eines Gasbrenners (10) nach einem der vorstehenden Ansprüche, das Verfahren umfasst das Formen einer Vielzahl von Öffnungen in ein Stück ebenen Materials, um eine Flammenleiste (16) mit durchgehenden Anschlüssen (18) zu definieren, mechanisches Umformen des ebenen Materials, um einen Körper (12) zu definieren, und Befestigen des Körpers (12) an einem Rahmenelement (22) durch Formen einer mechanischen Verbindung zwischen dem Körper (12) und dem Rahmenelement (22).

8. Verfahren nach Anspruch 7, wobei der Körper (12) und das Rahmenelement (22) durch Pressen aneinander befestigt werden.

9. Verfahren nach Anspruch 7 oder 8, wobei ein Flansch (20) am Körper (12) vorgesehen ist, und das Rahmenelement (22) profiliert ist, um an jeder Seite des Flansches (20) anzugreifen, um eine mechanische Verbindung zwischen dem Rahmenelement (22) und dem Flansch (20) auszubilden.

10. Verfahren nach einem der Ansprüche 7 bis 9, wobei Metallfaserstoff (17) auf einer äußeren Seite der Flammenleiste (16) befestigt wird.

11. Verfahren nach Anspruch 10, wobei der Metallfaserstoff (17) durch Punktschweißen auf der Flammenleiste (16) befestigt wird, und der Metallfaserstoff (17) kann auf der Flammenleiste (16) befestigt sein, bevor das ebene Material umgeformt wird, um den Körper (12) zu bilden.

Revendications

1. Brûleur à gaz, le brûleur à gaz 10 comprenant un corps 12 définissant une chambre, le corps 12 comprenant un élément monobloc profilé 14, avec une pluralité d'orifices 18 prévus s'étendant à travers une face du corps 12 pour fournir une bande de flamme 16, avec une surface de combustion sur le côté extérieur de la bande de flamme 16, le brûleur à gaz 10 comprenant également un élément de châssis 22 qui est monté sur le corps 12 par un assemblage mécanique, caractérisé en ce que le brûleur à gaz 10 est constitué par seulement le corps 12, l'élément de cadre 22, et une couche de fibres métalliques 17 montée sur le côté extérieur de la bande de flamme 16, l'élément de cadre 22 comportant une bande périphérique 24 définissant une ouverture centrale 26, avec une paire d'éléments de support 28 s'étendant au travers de l'ouverture, une collerette 20 étant prévue autour du corps 12, le corps 12 étant monté sur l'élément de cadre 22 par le biais des bords de la bande périphérique 24 qui sont pressés autour de la collerette 20.

2. Brûleur à gaz selon la revendication 1, dans lequel le corps 12 comprend une partie au moins généralement plane définissant la bande de flamme 16, et des parois latérales s'étendant depuis la partie plane, avec la collerette 20 prévue au niveau des extrémités opposées des parois latérales par rapport à la partie plane.

3. Brûleur à gaz selon la revendication 2, dans lequel la bande de flamme 16 est bombée.

4. Brûleur à gaz selon l'une quelconque des revendications précédentes, dans lequel la fibre métallique 17 est prévue sur une partie seulement de la bande de flamme 16.

5. Brûleur à gaz selon la revendication 4, dans lequel la fibre métallique 17 est prévue sur seulement une partie centrale de la bande de flamme 16.

6. Brûleur à gaz selon l'une quelconque des revendications précédentes, dans lequel la fibre métallique 17 est montée sur le corps 12 par soudage par points.

7. Procédé de formation d'un brûleur à gaz 10 selon l'une quelconque des revendications précédentes, le procédé comprenant les étapes consistant à former une pluralité d'ouvertures dans une pièce de matériau plat afin de définir une bande de flamme 16 avec des orifices 18 au travers de celle-ci, façonner mécaniquement le matériau plat pour définir un corps 12, et monter le corps 12 sur un élément de cadre 22 en formant un joint mécanique entre eux.

8. Procédé selon la revendication 7, dans lequel le corps 12 et l'élément de cadre 22 sont montés ensemble par pressage.

9. Procédé selon les revendications 7 ou 8, dans lequel une collerette 20 est prévue sur le corps 12 et l'élément de cadre 22 est profilé pour s'engager de part et d'autre de la collerette 20 pour fournir un joint mécanique entre eux.

10. Procédé selon l'une quelconque des revendications 7 à 9, dans lequel la fibre métallique 17 est montée sur un côté extérieur de la bande de flamme 16.

11. Procédé selon la revendication 10, dans lequel la fibre métallique 17 est montée sur la bande de flamme 16 par soudage par points, et la fibre métallique 17 peut être montée sur la bande de flamme 16 avant la mise en forme du matériau plat pour former le corps 12.

Drawing