CN109996993B

CN109996993B - Gas burner arrangement and hob comprising a gas burner arrangement

Info

Publication number: CN109996993B
Application number: CN201780073990.3A
Authority: CN
Inventors: 法比奥·拉西
Original assignee: Electrolux Appliances AB
Current assignee: Electrolux Appliances AB
Priority date: 2016-12-21
Filing date: 2017-11-20
Publication date: 2020-06-12
Anticipated expiration: 2037-11-20
Also published as: AU2017383863A1; WO2018114168A1; EP3339732A1; CN109996993A; BR112019012603A2; US20200072462A1

Abstract

The present invention relates to a gas burner device, comprising: -a gas burner having at least three burner sections; -a gas tap comprising at least one gas inlet coupled with a gas supply line and two gas outlets; -a distributor body comprising a distributor inlet and two or more distributor outlets; -an on/off valve adapted to open/close a gas line; wherein a first burner section is coupled with a first gas outlet of the gas tap, wherein a second gas outlet of the gas tap is coupled with the distributor inlet, wherein a first distributor outlet is coupled with a second burner section, wherein the second distributor outlet is coupled at least indirectly with an inlet of the on/off valve, and an outlet of the on/off valve is coupled with the third burner section.

Description

Gas burner arrangement and hob comprising a gas burner arrangement

Technical Field

In general, the present invention relates to the field of gas burners. More particularly, the present invention relates to a gas burner arrangement having a gas burner comprising at least three burner sections and a gas plug assembly for controlling the supply of gas to said flame section.

Background

Gas burners are well known in the art. In particular, known cooking hob gas burners comprise a jet holder, a burner crown, and a burner cap. The burner crown and burner cap form a combustion gas chamber that provides a mixture of gas and primary air to a flame ring comprising a plurality of flame ports.

Known gas burners comprise two gas burner sections of different sizes, i.e. a burner inner section and a burner outer section, wherein the outer burner is larger than the inner burner. A dual gas tap (i.e. a gas tap providing two gas outlets) is used to provide gas to the burner section.

Disadvantageously, a gas burner comprising more than two burner sections cannot be supplied by a double gas cock due to the limited number of gas outlets.

Disclosure of Invention

It is an object of embodiments of the present invention to provide a gas burner arrangement with a gas plug assembly, which is capable of selectively providing gas to a gas burner comprising three or more burner sections in a technically simple and cost-efficient manner. This object is solved by the features of the independent claims. Preferred embodiments are given in the dependent claims. The embodiments of the invention and the individual features of the embodiments can be freely combined with each other, if not explicitly stated otherwise.

According to one aspect, the present invention relates to a gas burner apparatus. The device includes:

-a gas burner having at least three burner sections;

-a gas tap comprising at least one gas inlet coupled with a gas supply line and two gas outlets;

-a distributor body comprising a distributor inlet and two or more distributor outlets; and

-an on/off valve adapted to open/close the gas line.

The first burner section is coupled to a first gas outlet of the gas tap. The second gas outlet of the gas tap is coupled to the distributor inlet. The first distributor outlet is coupled at least indirectly to the second combustor section, the second distributor outlet being coupled to the inlet of the on/off valve. An outlet of the on/off valve is coupled to the third combustor section.

The gas burner apparatus is advantageous in that standard components (i.e., a dual gas cock, a distributor body and an on/off valve) can be used to selectively provide gas to a gas burner having at least three burner sections. Thus, a technically simple and cost-effective solution for supplying gas to a multi-section gas burner is disclosed.

According to an embodiment, the first gas outlet of the gas tap is a secondary gas outlet and the second gas outlet of the gas tap is a primary outlet. The primary outlet includes a larger outlet cross-section than the secondary outlet. Thus, two or more combustor sections may be coupled with the main outlet.

According to an embodiment, the gas tap comprises a safety valve coupled with a flame control entity arranged at the gas burner. The flame control entity may be adapted to monitor whether a flame is provided at one or more burner sections of the gas burner. For example, the flame control entity may be a thermocouple. The flame control entity may be disposed at the burner inner section or between the burner inner section and the burner intermediate section.

According to an embodiment, the safety valve is adapted to shut off a gas connection between a gas inlet and a gas outlet of the gas tap based on information provided by the flame control entity. Thus, when the flame control entity indicates that there is no flame at the gas burner, the safety valve closes. Therefore, if the flame at the gas burner is extinguished, the supply of gas to the gas burner may be stopped.

According to an embodiment, the safety valve is a solenoid valve. The control of the safety valve by the thermocouple can thus be simplified.

According to an embodiment, the gas burner comprises a plurality of concentric annular burner sections. Thus, pieces of cookware comprising different sizes or diameters may be heated by the same gas burner.

According to an embodiment, the first burner section is a burner inner section, the second burner section is a burner intermediate section, and the third burner section is a burner outer section. Preferably, the gas burner assembly is configured such that the burner inner section can be powered alone and with one or more of the further burner sections, but the burner intermediate section and the burner outer section can only be powered with the burner inner section. Thereby simplifying the usability of the gas burner apparatus.

According to an embodiment, the size of the combustor sections increases from the first combustor section to the third combustor section. Thus, the first burner section may comprise the lowest heating power, while the burner outer section may provide the largest heating power.

According to an embodiment, the first burner section is directly coupled with the first gas outlet of the gas tap. The first gas outlet may be a main outlet. Thus, when the gas tap is opened, the first burner section is activated as the preferential burner section.

According to an embodiment, the second burner section is coupled with the second gas outlet of the gas tap via the distributor body without passing the on/off valve. Thus, if the second gas outlet of the gas tap is opened, the second burner section is activated (in particular, activated together with the first burner section).

According to an embodiment, the third burner section is coupled with the second gas outlet of the gas tap via the distributor body and the on/off valve. The third burner section can thus be controlled independently, i.e. it can be activated when the second burner section is activated in order to provide the highest heating power level at the gas burner or switched off in order to provide an intermediate heating power level.

According to an embodiment, the on/off valve is adapted to be controlled independently of the gas tap. The independent control may be provided by different control means provided at the gas tap and the on/off valve.

According to an embodiment, the burner sections are integrated in a burner crown or burner crown assembly of the gas burner. The combustor crown assembly may include a plurality of flame rings that may be stacked or stacked to build the combustor crown.

According to another aspect, the present invention relates to a gas hob with a gas burner device configured according to any one of the preceding embodiments.

According to yet another aspect, the invention relates to a method for controlling a gas burner having at least three burner sections using a gas tap assembly comprising at least one gas tap having at least one gas inlet and two gas outlets, a distributor body and an on/off valve. The method comprises the following steps:

-controlling a first burner section and a second burner section of the gas burner using a control device of the gas tap; and is

-controlling the third burner section using a control device of the on/off valve.

The terms "substantially", "substantially" or "approximately" as used herein refer to a deviation from the exact value by +/-10%, preferably +/-5%, and/or a variation that is not functionally significant.

Drawings

These various aspects of the invention, including its specific features and advantages, will be readily understood from the following detailed description and the accompanying drawings, in which:

fig. 1 shows a schematic functional diagram of a gas burner apparatus according to a first embodiment; and is

Fig. 2 shows a schematic functional diagram of a gas burner arrangement according to a second embodiment.

Detailed Description

The present invention will now be described more fully with reference to the accompanying drawings, in which exemplary embodiments are shown. However, the present invention should not be construed as being limited to the embodiments set forth herein. Throughout the following description, similar reference numerals are used to denote similar elements, components, items or features, where applicable.

Fig. 1 shows a first embodiment of a gas burner apparatus 1. The gas burner arrangement 1 comprises a gas burner 2, which comprises a plurality of burner sections, in this embodiment three burner sections 2.1, 2.2, 2.3. The burner sections 2.1, 2.2, 2..3 are provided at a burner crown 2a, which may be a burner crown 2a detachable as a plurality of burner crown portions. In more detail, the burner sections 2.1, 2.2, 2.3 may be formed by flame rings of different sizes, which may be stacked or stacked on top of each other in order to build up a multi-section burner crown 2 a. In order to provide gas to one or more of the burner sections 2.1, 2.2, 2.3, a gas plug assembly is used, which is described in more detail below.

The gas tap assembly comprises a gas tap 3, a dispenser body 5 and an on/off valve 6. The gas tap 3 may be a double gas tap comprising at least one gas inlet 3.1 and two gas outlets 3.2, 3.3. The gas inlet 3.1 may be coupled with a gas supply line 4, which provides gas to the gas tap 3 (e.g. from a gas bottle or a central gas supply line). The gas tap 3 may comprise a control element (not shown in the figures). The user can control the gas tap 3 by actuating said control element. According to an example, the user may be able to control whether gas is supplied to the first gas outlet, the second gas outlet or both gas outlets 3.2, 3.3, or whether both gas outlets 3.2, 3.3 are closed (i.e. turned off).

In addition, the gas tap 3 may comprise a safety valve 3.4 adapted to shut off the gas flow through the gas tap 3 in case the flame at the gas burner 2 is extinguished. The safety valve 3.4 may be, for example, a solenoid valve. In order to receive information when at least one burner section provides a flame, the gas burner 2 may comprise at least one flame control entity 2.5. The flame control entity 2.5 may be, for example, a thermocouple.

The first gas outlet 3.2 of the gas tap 3 is coupled, preferably directly (i.e. without any intermediate entities), with the gas inlet of the gas burner 2, through which gas is provided to the first burner section 2.1. Thus, in other words, the first burner section 2.1 is directly supplied with gas through the first gas outlet 3.2 of the gas tap 3. The first gas outlet 3.2 may be, for example, a secondary outlet of the gas tap 3. The secondary outlet may comprise a smaller outlet cross-section than the secondary gas outlet 3.3, which may be the primary outlet.

As shown in fig. 1, the second gas outlet 3.3 of the gas tap 3 is coupled with a distributor body 5. The distributor body 5 comprises a distributor inlet 5.1 and at least two distributor outlets 5.2, 5.3. The distributor entity 5 may be a passive entity providing a gas path that splits from a single gas path into at least two gas paths. The dispenser body 5 may be, for example, a T-shaped dispenser or a Y-shaped dispenser. Thus, by means of the distributor body 5, separate gas pipes can be used to supply gas to two or more burner sections 2.2, 2.3. In the present embodiment, the distributor inlet 5.1 is coupled, preferably directly (i.e. without any intermediate entities), to the second gas outlet 3.3 by means of a gas pipe. The first distributor outlet 5.2 is coupled, preferably directly (i.e. without any intermediate entities), with another burner section (e.g. the second burner section 2.2) by a gas pipe. The supply of gas to the second burner section 2.2 can be controlled using a control device comprised in the gas tap 3. If gas is provided at said second gas outlet 3.3, it flows via a distributor body 5 towards the second burner section 2..2 and is provided at the flame ports of said second burner section 2.2.

The second distributor outlet 5.3 is coupled to yet another burner section (e.g. the third burner section 2.3) via said on/off valve 6. The inlet 6.1 of the on/off valve 6 is coupled with the second distributor outlet 5.3 of the distributor entity 5 and the outlet 6.2 of the on/off valve 6 is coupled, preferably directly coupled (i.e. without any intermediate entities) with the third burner section 2.3. By means of said on/off valve 6, the gas flow from the distributor entity 5 to the third burner section 2.3 can be enabled or disabled.

By means of the gas burner assembly 1 described above, the following operating modes are possible:

the individual burner section, i.e. the first burner section 2.1, is supplied with gas. The first burner section 2.1 may be the smallest burner section with the lowest heating power (e.g. providing a heating power in the range of about 0.3KW to 1 KW);

-providing gas to a pair of burner sections, a first burner section 2.1 and a second burner section 2.2. The pair of burner sections may provide heating power in the range of about 1KW to 2.5 KW. The gas tap 3 may be configured such that gas may be provided at the second gas outlet 3.3 only if gas is provided at the first gas outlet 3.2 at the same time (i.e. the second burner section 2.2 may be activated only when the first burner section 2.1 is activated);

supply of gas to the three burner sections 2.1, 2.2, 2.3 by opening the on/off valve 6. The three burner sections may provide heating power in the range of about 1.6KW to 4 KW. The gas tap 3 may be configured such that gas may be provided at the second gas outlet 3.3 only if gas is provided at the first gas outlet 3.2 at the same time (i.e. the third burner section 2.3 may be activated only when the first and second burner sections 2.1, 2.2 are activated).

Fig. 2 shows a further embodiment of the gas burner apparatus 1, which comprises more than three burner sections. In the present exemplary embodiment, the gas burner 2 comprises four burner sections 2.1, 2.2, 2.3, 2.4. In the following, additional or different features of the embodiment according to fig. 2 with respect to the embodiment of fig. 1 are explained. In addition to this, the features and the interaction of features described previously in relation to the embodiment of fig. 1 also apply to the embodiment of fig. 2.

The main difference is that the second distributor outlet 5.3 is not directly coupled with the on/off valve 6, but said second distributor outlet 5.3 is coupled with another distributor entity 7, i.e. with the inlet 7.1 of said other distributor entity 7. The further distributor entity 7 may be configured identical to or different from the distributor entity 5. The further distributor entity 7 is adapted to divide the gas flow provided by the second distributor outlet 5.3 into two or more partial gas flows. A first partial gas stream is provided at the first distributor outlet 7.2 and a second partial gas stream is provided at the second distributor outlet 7.3. The two distributor outlets 7.2, 7.3 are coupled to the burner sections 2.3, 2.4 via on/off

valves

6, 8, i.e. the first distributor outlet 7.2 is coupled to the third burner section 2.3 via an on/off valve 6 and the second distributor outlet 7.3 is coupled to the fourth burner section 2.4 via an on/off valve 8. The on/off

valves

6, 8 can be controlled independently of each other and of the gas tap 3 in order to activate/deactivate the burner sections 2.3, 2.4 independently.

Unlike the embodiment according to fig. 2 described above, the pair of distributor bodies 5, 7 may be replaced by a single distributor body comprising three distributor outlets. One of the outlets is directly coupled to a combustor section, while the other two outlets are coupled to different combustor sections via on/off valves.

It should be noted that the description and the drawings merely illustrate the principle of the proposed gas burner device. Those skilled in the art will be able to implement various arrangements that embody the principles of the invention and are not explicitly described or illustrated herein.

List of reference numerals

1 gas burner device

2 gas burner

2a burner crown

2.1 first burner section

2.2 second burner section

2.3 third burner section

2.4 fourth burner section

2.5 flame control entity

3 gas cock

3.1 gas inlet

3.2 first gas outlet

3.3 second gas outlet

3.4 safety valve

4 gas supply line

5 distributor entity

5.1 distributor Inlet

5.2 first distributor outlet

5.3 second distributor Outlet

6 on/off valve

6.1 entrance

6.2 outlet

7 another distributor entity

7.1 entrance

7.2 first distributor outlet

7.3 second distributor Outlet

8 on/off valve

Claims

1. A gas burner apparatus, comprising:

-a gas burner (2) having at least three burner sections (2.1, 2.2, 2.3);

-a gas tap (3) comprising at least one gas inlet (3.1) coupled with a gas supply line (4) and two gas outlets (3.2, 3.3);

-a distributor body (5) comprising a distributor inlet (5.1) and two or more distributor outlets (5.2, 5.3);

-an on/off valve (6) adapted to open/close a gas line;

wherein a first burner section (2.1) is coupled with a first gas outlet (3.2) of the gas tap (3), wherein a second gas outlet (3.3) of the gas tap (3) is coupled with the distributor inlet (5.1), wherein a first distributor outlet (5.2) is coupled with a second burner section (2.2), wherein a second distributor outlet (5.3) is coupled at least indirectly with an inlet (6.1) of the on/off valve (6), and an outlet (6.2) of the on/off valve (6) is coupled with a third burner section (2.3).

2. Gas burner device according to claim 1, wherein the first gas outlet (3.2) of the gas tap (3) is a secondary gas outlet and the second gas outlet (3.3) of the gas tap (3) is a primary outlet.

3. Gas burner device according to claim 1 or 2, wherein the gas tap (3) comprises a safety valve (3.4) coupled with a flame control entity (2.5) arranged at the gas burner (2).

4. Gas burner device according to claim 3, wherein the safety valve (3.4) is adapted to shut off the gas connection between the gas inlet (3.1) and the gas outlet (3.2, 3.3) of the gas tap (3) based on the information provided by the flame control entity (2.5).

5. Gas burner device according to claim 3, wherein the safety valve (3.4) is a solenoid valve.

6. Gas burner apparatus according to claim 1 or 2, wherein the gas burner (2) comprises a plurality of concentric annular burner sections (2.1, 2.2, 2.3).

7. Gas burner device according to claim 1 or 2, wherein the first burner section (2.1) is a burner inner section, the second burner section (2.2) is a burner middle section and the third burner section (2.3) is a burner outer section.

8. Gas burner arrangement according to claim 7, wherein the size of the burner sections (2.1, 2.2, 2.3) increases from the first burner section to the third burner section (2.1, 2.2, 2.3).

9. Gas burner device according to claim 1 or 2, wherein the first burner section (2.1) is directly coupled with the first gas outlet (3.2) of the gas tap (3).

10. Gas burner device according to claim 1 or 2, wherein the second burner section (2.2) is coupled with the second gas outlet (3.3) of the gas tap (3) via the distributor entity (5) without passing through the on/off valve (6).

11. The gas burner device according to claim 1 or 2, wherein the third burner section (2.3) is coupled with the second gas outlet (3.3) of the gas tap (3) via the distributor entity (5) and the on/off valve (6).

12. Gas burner device according to claim 1 or 2, wherein the on/off valve (6) is adapted to be controlled independently of the gas tap (3).

13. Gas burner device according to claim 1 or 2, wherein the burner sections (2.1, 2.2, 2.3) are integrated in a burner crown (2a) or burner crown assembly of the gas burner (2).

14. A cooking hob including a gas burner device configured according to any one of the preceding claims.

15. A method of controlling a gas burner (2) having at least three burner sections (2.1, 2.2, 2.3) using a gas tap assembly comprising at least one gas tap (3) having at least one gas inlet (3.1) and two gas outlets (3.2, 3.3), a distributor body (5), and an on/off valve (6), the method comprising the steps of:

-controlling the first and second burner sections (2.1, 2.2) of the gas burner (2) using the control element of the gas tap (3); and is

-controlling the third burner section (2.3) using the control element of the on/off valve (6).