WO2024218140A1

WO2024218140A1 - Gas main and a gas cooking appliance

Info

Publication number: WO2024218140A1
Application number: PCT/EP2024/060397
Authority: WO
Inventors: Emilio Placer Maruri; Eva Gonzalez Moujir; Jose Manuel Alonso Lopez; Manuel Alfredo Santovenia Ortiz
Original assignee: BSH Hausgeraete GmbH
Current assignee: BSH Hausgeraete GmbH
Priority date: 2023-04-19
Filing date: 2024-04-17
Publication date: 2024-10-24
Anticipated expiration: 2025-10-19

Abstract

The invention relates to a gas cooking appliance (100) and a gas main (1) for the gas cooking appliance (100) having an inner channelling (14) for gas and comprising at an end (15) a connecting tap (16) for the connection to the gas pipeline network external to the appliance and, at least at a point between both ends of the main (1), a gas outlet opening (17) to which a gas tap (5) can be connected regulating a gas flow (F) towards a cooking hob (8) of the gas cooking appliance (100), which can circulate through the inner channelling (14) from the connecting tap (16) up to the gas outlet opening (17). In order to have a more versatile main, the main (1) has a connecting wall (11) with at least a groove (18) for a first body protrusion (52) of a tap body (51) of the gas tap (5) to be connected to the same and the gas main (1) is made in one piece.

Description

GAS MAIN AND A GAS COOKING APPLIANCE

The invention relates to a gas main for a gas cooking appliance having an inner channelling for gas and comprising at an end a connecting tap for the connection to the gas pipeline network external to the appliance and, at least at a point between both ends of the main, a gas outlet opening to which a gas tap can be connected regulating a gas flow towards a cooking hob of the gas cooking appliance, which can circulate through the inner channelling from the connecting tap up to the gas outlet opening.

A gas cooking appliance such as a gas stove or a gas hob from patent EP 2857751 B1 can be connected to a gas supplying source, such as a gas pipeline network external to the appliance by means of a gas main to which gas regulating valves are connected, from which gas pipes lead gas to the gas nozzles, which form the cooking hobs of the gas stove together with the gas burners.

Considering this background, the object of the invention is to provide an improved gas main for a gas cooking appliance.

Therefore, a gas main for a gas cooking appliance is proposed having an inner channelling for gas and comprising at an end a connecting tap for the connection to the gas pipeline network external to the appliance and, at least at a point between both ends of the main, a gas outlet opening to which a gas tap can be connected regulating a gas flow towards a cooking hob of the gas cooking appliance, which can circulate through the inner channelling from the connecting tap up to the gas outlet opening, wherein the main has at its outer perimeter a side surface with at least a groove for a first body protrusion of a tap body of the gas tap to be connected to the same and the gas main is made in one piece.

A “main” refers to the conduit of the gas appliance into which gas flow from outside the appliance flows directly to be distributed towards the cooking hobs. The main is substantially longitudinal and has two ends. Inside the main there is an inner channelling through which gas can circulate and extending at least over a part of the interior of the main and being opened to the outside at least at one of the ends of the main, a connecting tap being formed at said end by which connection to the gas pipeline network external to the appliance can be obtained by means of a connecting element. The gas pipeline network external to the appliance may be a gas bottle or the gas pipe coming from the community gas pipeline network or any other conventional gas supply. Located between its ends, the main has at least a gas outlet opening extending through a main side wall, which connects the inner channelling with the main outside. The number of gas outlet openings depends on the number of gas valves or taps that can be connected to the main to regulate the gas flow from the connecting tap, through the inner channelling towards the gas nozzles of the gas burners of the gas cooking appliance. Preferably, the opening has a circular section and, when the tap is installed in the main, the tap body of the gas tap surrounds the outer mouth of the opening, thereby sealing it. To connect the gas tap to the main in a reliable and simple manner, this has a groove on its connecting wall. The groove can be a blind crevice located near the opening mouth and projecting into the main. The groove preferably extends longitudinally over the connecting wall of at least a part of the main, more preferably extends longitudinally over the entire connecting wall of the main. A first body protrusion of the tap body of the tap gas can be connected to the groove, more preferably without any positive-fit tool. The groove can have an L-shape into which the first body protrusion of the tap body can be hooked and, rotating on this, the gas tap being pulled down towards the main, the tap is connected in the gas outlet opening.

The main is made in one piece, preferably rigid and non-flexible, e.g. made from an extruded metal bar such as of aluminium, and the groove and/or the inner channelling are extruded together with the rest of the main. In this manner, the manufacturing of the main is simple and economical. In another economical and easy manner, the main is made from a molten metal bar and the groove and/or the inner channelling are shaped in the main. In another manufacturing mode, it is provided that the main is made from a metal bar and that at least the groove and/or the inner channelling have been machined with a cutting tool. In any of the manufacturing modes, it is advantageous that the groove extends longitudinally along the gas main.

Furthermore, for a complete fixation of the gas tap to the main, it is provided that it has at least a rib for a second body protrusion of the tap body of the gas tap to be connected to the same by means of a connecting element. Like the groove, it is also advantageous that the rib extends longitudinally along the gas main. The rib can be a projection out of the main or an outer wall of the main to which the second body protrusion of the gas body can be fixed.

In addition, a household appliance, in particular a gas stove, with such a gas main is proposed. In this aspect of the invention, the gas cooking appliance comprises at least a cooking hob, a housing and a covering plate arranged spaced apart from the housing, an appliance interior space being thereby defined, in which a gas main, at least a gas tap, at least a gas nozzle in the cooking hob and the gas pipe capable of leading a gas flow from the gas tap to the gas nozzle are arranged, wherein the gas main is a gas main according to the invention. A “cooking hob” is understood to be the cooking area of the gas appliance, either a burner of a flat gas cooking plate or a cavity of a gas oven. The housing of the appliance is the outer frame of the gas cooking appliance inside which the remaining functional components are arranged and which is closed by the covering plate, the appliance interior space being thereby defined. The main is arranged in the interior space and is usually fixed to the housing. The housing is usually made of a metal sheet and the main is fixed, preferably screwed, to the housing. To this, the gas main has a main side wall extending on a plane and which is fixed to a substantially flat housing side wall of the housing. This is very advantageous since the shaping number required during the manufacturing of the housing is significantly reduced and, in this manner, the problems relating to tolerance chains when the components are installed in the appliance interior space are too.

The appliance interior space is defined by the housing and by the covering plate, which is fixed to the housing on the appliance, and/or can be the oven cavity. Inside the interior space and connected to the opening, there is a gas tap in the gas main from which a gas pipe extends capable of leading the gas flow from the connecting tap, through the inner channelling, flowing through the outlet opening, the gas tap and the gas pipe towards the nozzles of the cooking hobs.

The gas tap has a gas body with a first body protrusion fitted into the groove. The body of the gas tap is rigid and the outer housing of the gas tap and, on its outer outline, it has the first body protrusion fitting into the groove of the main. To connect the second body protrusion of the body of the gas tap with the rib of the main, a connecting element is used, which can be a screwed connection detachably fixed to the rib of the main or a clip quick connection detachably fixed to the rib.

Furthermore, it is provided that the gas main has a main top wall extending on a plane and contacting a plate inner face of the covering plate. In this manner, the main further performs a structural function in such a manner that the top plate rests on the main giving bend resistance against bending that might occur in the covering plate when receiving a weight or force directed into the appliance. That main top wall can be entirely flat or be formed by contact strips with the plate inner face, or a plurality of contact points with the plate inner face and, in all cases, it complies with the same reinforcing function of the covering plate.

In a preferred configuration of the main, the main side wall and the main top wall form an angle smaller than 90°, ranging from 70° to 90°, more preferably from 80° to 90° and, more preferably, a substantially right angle, where the covering plate and the housing side wall converge, acting as a reinforcement and structure of the appliance in that area. This is also advantageous since, if both main walls are in contact with the covering plate and the housing side wall, the main cannot rotate about its longitudinal axis if a too high rotational torque is applied when the connecting element is connected to the connection fitting for the connection to the gas pipeline network external to the appliance. This connection is achieved by screwing the connecting element to the main through a window in the housing of the appliance. This makes the exerted torque be transferred to the connecting element and force the main to rotate about its longitudinal axis. Therefore, the housing has a window for accessing the connecting tap of the gas main for connecting a connection fitting of the gas pipeline network external to the appliance.

Other advantageous configurations and aspects of the invention are the object of the secondary claims as well as of the exemplary embodiments of the invention subsequently described. The invention is explained below in more detail by means of preferred embodiments, making reference to the attached figures.

Fig. 1 shows a perspective view of a gas cooking appliance;

Fig. 2 shows a side view of the gas main with a gas tap in an operating position;

Fig. 3 shows a perspective view of the gas main from figure 2 with two gas taps arranged being mounted in the main;

Fig. 4 shows a side view of a section of the gas cooking appliance according to the invention; and

Fig. 5 shows a perspective view of a section from figure 4.

In the figures, the same elements or having the same function are provided with the same reference numerals, unless otherwise indicated. Figure 1 shows a perspective schematic view of a gas cooking appliance 100. The gas cooking appliance 100 is in particular a gas hob and has a covering plate 2, on which there are four cooking hobs 8, and a housing 3 having a window 32 from which the end 15 of the main 1 protrudes. At the end 15 there is a connecting tap 16 (hidden in the figure) threaded where the connection fitting 151 is screwed for the connection to the external gas pipeline network. The connection fitting 151 has the corresponding connecting thread.

Figure 2 shows a side view of a section of a main 1 of the invention in which a gas tap 5 is mounted. The main 1 has an inner channelling 14 through which the gas flow F flows to the gas tap 5 and, through this, to the gas pipe 6 towards the cooking hob 8. On the top of the perimeter of the main 1 , it has a main top wall 13 on which the plate inner face 21 of the covering plate 2 can rest. The perimeter of the section of the main 1 has a substantially flat main side wall 12 into which mounting drill holes 121 are made to connect the main 1 to the housing 3 (not shown) and a fixing drill hole 91 is made to connect the connecting element 9 to the second body protrusion 53 of the gas tap 5. The main 1 has a connecting wall 11 having a groove 18 into which a first body protrusion 52 of the tap body 51 of the gas tap 5 fits. The groove 18 surrounds and embraces the first body protrusion 52 in such a manner that the movement of the gas tap 5 when being separated from the main 1 is blocked. Besides, the rib 19 is shown on the connecting wall 11 , into which a second body protrusion 53 of the tap body 51 of the gas tap 5 fits, which, in this case, is connected to the main 1 by means of the connecting element 9. In this case, the connecting element 9 is a through screw extending through the fixing drill hole 91 made in the main 1. In this manner, the gas tap 5 remains fixedly connected to the main 1.

Figure 3 shows a perspective view of the set composed of the main 1 and the gas tap 5 from figure 2. In this figure, two gas taps 5 connected to the main 1 are shown. The connecting tap 16 into the opening of the inner channelling 14 is arranged at the shown end 15 of the main 1 , and through it the gas flow F flows towards the gas taps 5 and, through them, to the gas pipes 6. The connecting tap 16 has a female thread on which the male thread of the connection fitting 151 from figure 2 fits. The top face of the main 1 is the main top wall 13, which is entirely flat in this case and on which the plate inner face 21 of the covering plate 2 can rest. The main side wall 12, which is substantially flat, is located in the rear part of the perimeter of the section of the main 1. There is an L- shaped groove 18 into the connecting wall 11 of the main 1 , into which the first body protrusions 52 of the tap bodies 51 of the corresponding gas tap 5 fit. Furthermore, the connecting wall 11 has a rib 19 contacting the second body protrusion 53 of each gas tap 5. The groove 18 surrounds and embraces the first body protrusions 52 in such a manner that the movement of the gas taps 5 when being separated from the main 1 is blocked. Besides, two gas outlet openings 17 can be also seen in the connecting wall 11 being ready to receive two corresponding gas taps 5 and through which the gas flow F can flow from the inner channelling 14.

Figure 4 shows a side view of a section of a gas cooking appliance 100 having the covering plate 2 on the housing 3. Thereby, the appliance interior space 4 is defined, inside which the gas tap 5 is located being connected to the main 1. In this figure 4, the main 1 is different from the main 1 from figures 2 and 3 regarding the fixation of the gas tap 5 to the main 1 , but having essentially the same features. The main 1 has an inner channelling 14 through which the gas flow F flows towards the gas tap 5 and, through it, to the gas pipe 6 towards the cooking hob 8. The top of the perimeter of the main 1 has a main top wall 13 on which the plate inner face 21 of the covering plate 2 rests. The perimeter of the section of the main 1 has a substantially flat main side wall 12 into which mounting drill holes 121 are made to connect the main 1 to the housing side wall 31 of the housing 3. The main 1 has a connecting wall 11 opposite to the main side wall 12 and having an L-shaped groove 18 into which the first body protrusion 52 of the tap body

51 of the gas tap 5 fits. The groove 18 surrounds and embraces the first body protrusion

52 in such a manner that the movement of the gas tap 5 when being separated from the main 1 is blocked. Besides, the rib 19 is shown on the connecting wall 11 , on which the second body protrusion 53 of the tap body 51 of the gas tap 5 rests, which is connected to the main 1 by means of the connecting element 9. In this case, the connecting element 9 is an elastic cramp simultaneously embracing the rib 19 and the second body protrusion 53. In this manner, the gas tap 5 remains fixedly connected to the main 1.

Figure 5 shows a perspective view of the section of the gas cooking appliance 100 from figure 4. The covering plate 2 is arranged on the housing 3 defining the appliance interior space 4, inside which the gas tap 5 is connected to the main 1. The main 1 has an inner channelling 14 through which the gas flow F flows to the gas tap 5 and through this to the gas pipe 6 towards the cooking hob 8. The top of the main 1 has a main top wall 13 on which the plate inner face 21 of the covering plate 2 rests. The main 1 has a substantially flat main side wall 12 contacting the housing side wall 31 of the housing 3. The main 1 has a connecting wall 11 opposite to the main side wall 12 and having an L- shaped groove 18 into its end, into which the first body protrusion 52 of the tap body 51 of the gas tap 5 fits. The groove 18 surrounds and embraces the first body protrusion 52 in such a manner that the movement of the gas tap 5 when being separated from the main 1 is blocked. Besides, the rib 19 is shown on the connecting wall 11 , on which the second body protrusion 53 of the tap body 51 of the gas tap 5 rests, which is connected to the main 1 by means of the connecting element 9. In this case, the connecting element 9 is an elastic cramp simultaneously embracing the rib 19 and the second body protrusion 53. In this manner, the gas tap 5 remains fixedly connected to the main 1.

Reference numerals

100 gas cooking appliance

F gas flow

1 gas main

11 connecting wall

12 main side wall

121 mounting drill hole

13 main top wall

14 inner channelling

15 end

151 connection fitting

16 connecting tap

17 gas outlet opening

18 groove

19 rib

2 covering plate

21 plate inner face

3 housing

31 housing side wall

32 window

4 appliance interior space

5 gas tap

51 tap body

52 first body protrusion

53 second body protrusion

6 gas pipe

7 gas nozzle

8 cooking hob

9 connecting element

91 fixing drill hole

Claims

PATENT CLAIMS

1 . A gas main (1) for a gas cooking appliance (100) having an inner channelling (14) for gas and comprising at an end (15) a connecting tap (16) for the connection to the gas pipeline network external to the appliance and, at least at a point between both ends of the main (1), a gas outlet opening (17) to which a gas tap (5) can be connected regulating a gas flow (F) towards a cooking hob (8) of the gas cooking appliance (100), which can circulate through the inner channelling (14) from the connecting tap (16) up to the gas outlet opening (17), characterized in that the main (1) has a connecting wall (11) with at least a groove (18) for a first body protrusion (52) of a tap body (51) of the gas tap (5) to be connected to the same and in that the gas main (1) is made in one piece.

2. The gas main (1) according to claim 1 , characterized in that the main (1) is made from an extruded metal bar and the groove (18) and/or the inner channelling (14) are extruded together with the rest of the main (1).

3. The gas main (1) according to claim 1 , characterized in that the main (1) is made from a molten metal bar and the groove (18) and/or the inner channelling (14) are shaped in the main (1).

4. The gas main (1) according to claims 1 to 3, characterized in that the main (1) is made from a metal bar and in that at least the groove (18) and/or the inner channelling (14) have been machined with a cutting tool.

5. The gas main (1) according to any of the preceding claims, characterized in that the groove (18) extends longitudinally along the gas main (1).

6. The gas main (1) according to claim 5, characterized in that it has at least a rib (19) for a second body protrusion (53) of the tap body (51) of the gas tap (5) to be connected to the same by means of a connecting element (9).

7. The gas main (1) according to claim 6, characterized in that the rib (19) extends longitudinally along the gas main (1).

8. A gas cooking appliance (100) comprising at least a cooking hob (8), a housing (3) and a covering plate (2) arranged spaced apart from the housing (3), an appliance interior space (4) being thereby defined, in which a gas main (1), at least a gas tap (5), at least a gas nozzle (7) in the cooking hob (8) and the gas pipe (6) capable of leading a gas flow (F) from the gas tap (5) to the gas nozzle (7) are arranged, characterized in that the gas main (1) is a gas main (1) according to any of the preceding claims.

9. The gas cooking appliance (100) according to claim 8, characterized in that the gas tap (5) has a gas body (51) with a first body protrusion (52) fitted into the groove

(18).

10. The gas cooking appliance (100) according to claim 8 or 9, characterized in that the connecting element (9) is a screwed connection that is detachably fixed to the rib

(19) of the main (1).

11. The gas cooking appliance (100) according to claim 8 or 9, characterized in that the connecting element (9) is a clip quick connection that is detachably fixed to the rib (19) of the main (1).

12. The gas cooking appliance (100) according to any of claims 8 to 11 , characterized in that the gas main (1) has a main side wall (12) extending on a plane and which is fixed to a substantially flat housing side wall (31) of the housing (3).

13. The gas cooking appliance (100) according to any of claims 8 to 12, characterized in that the gas main (1) has a main top wall (13) extending on a plane and contacting a plate inner face (21) of the covering plate (2).

14. The gas cooking appliance (100) according to any of claims 8 to 13, characterized in that the main side wall (12) and the main top wall (13) form an angle smaller than 90°.

15. The gas cooking appliance (100) according to any of claims 8 to 14, characterized in that the housing (3) has a window (32) for accessing the connecting tap (16) of the gas main (1) for connecting a connection fitting (151) of the gas pipeline network external to the appliance.