FR3037129B1 - COOKING DEVICE - Google Patents

Abstract

The cooking device (10) comprises: - a primary gas burner (105) supplied by a primary gas inlet (110), - at least one secondary gas burner (115) at least partially surrounding the primary gas burner , each secondary gas burner being supplied by a secondary gas inlet (120) and - a movable trigger (125) of which: - a first position triggers the supply and ignition of the primary burner and - a second position triggers the supply and ignition of the primary burner and at least one secondary burner.

Description

TECHNICAL FIELD OF THE INVENTION

The present invention is directed to a cooking device. It applies, in particular, to the field of hobs used in professional kitchens.

STATE OF THE ART

Professional kitchens often face a small area available. As a result, the space available for cooktops is also restricted. Cooks / manufacturers then face the following problem: - how, with fewer burners available, get a wide range of high power modulation? - how to adapt the size of the burner to the diameter of the containers used, in particular between dimensions varying in the case of small pots to large pots?

In some systems, the hob has a central burner and at least one ring for delivering a large heating power. The power for these burners is modulated by the variation of the gas flow, this flow rate varying thanks to the use of a gas valve.

However, in these systems, the burner control buttons only adjust the burner output. In the case of multi-crown burners, they only regulate the power of all the crowns.

As a result: - the available power range is limited to the high powers of the burner, which does not allow to achieve satisfactorily cooking on very low heat, for example, which requires a low power of maintenance and - it is mandatory to use large containers on these lights; the size of the containers being determined by that of the widest crown.

OBJECT OF THE INVENTION

The present invention aims to remedy all or part of these disadvantages. For this purpose, according to a first aspect, the present invention relates to a cooking device, which comprises: - a primary gas burner fed by a primary gas inlet, - at least one secondary gas burner at least partially surrounding the burner to primary gas, each secondary gas burner being fed by a secondary gas inlet and - a movable release of which: - a first position triggers the supply and ignition of the primary burner and - a second position triggers the supply and the igniting the primary burner and at least one secondary burner.

Thanks to these provisions, the ignition of each burner is independent, which allows to vary the number of burners ignited according to the desired power and the dimensions of a container placed on the cooking device. The more the container has a wide base, the more the number of burners to be ignited is high. This device allows a double modularity of the cooking: both in power and heating surface.

In embodiments, the primary and secondary gas inlets are fed by a common gas inlet, the common gas inlet being controlled in opening and closing, depending on the positioning of the trigger.

These embodiments make it possible to limit the number of conduits required to supply gas to each burner.

In embodiments, the release includes a housing pierced with orifices, of which: an inlet orifice is connected to the common gas inlet; a primary supply orifice is connected to the primary inlet of the primary burner; and for each secondary burner, a secondary supply orifice is connected to the secondary inlet of said secondary burner, and a selector is movable in rotation and positioned facing the housing between a first position and at least a second position for selectively feeding the burner. primary supply port and / or secondary supply ports.

These embodiments make it possible to limit the number of mechanical parts moving independently so as to simplify the use of the device.

In embodiments, the selector comprises at least one cavity for the transfer of gas between the inlet orifice and at least one supply orifice, the cavity being arranged facing the housing and positioned: - facing the inlet port in a first position, facing the inlet port and the primary supply port in a second position and at least opposite the inlet port and at the minus one secondary supply port in a third position.

These embodiments allow the supply of one or more secondary power supplies depending on the position of the cavity, this cavity allowing the passage of gas from the inlet orifice to each other orifice in contact with the cavity.

In embodiments, the cavity has a circular arc shape, the feed orifices being arranged on the surface along a path traversed by this arc when the selector is moved.

These embodiments allow a facilitated realization of the device because of the geometry of arc of circle corresponding to the path traveled by a circle during the rotary movement of the selector.

In embodiments, the trigger comprises a pushbutton and rotary, according to an axis of rotation of the selector, a press on this button triggering the ignition of the primary burner and, by a flame path, each secondary burner fed by the gas passing through the inlet port, a gas flow through the inlet orifice varying according to a rotation angle of the push button.

These embodiments make it possible to control both the ignition and the flow of gas supplied to each burner.

In embodiments, at least two primary and secondary gas inlets are coaxial on at least one of their parts.

These embodiments make it possible to limit the number of connection interfaces between the gas inlets and the burners when at least one coaxial part is positioned instead of this interface.

In embodiments, the device which is the subject of the present invention comprises a safety valve controlled by the button, and supplying each gas inlet, the valve being fed by a gas supply line.

These embodiments allow modulation of the gas flow to the burners.

In embodiments, the burner assembly forms a multi-ring burner.

These embodiments make it possible to heat circular-base containers, for example.

BRIEF DESCRIPTION OF THE FIGURES Other particular advantages, aims and characteristics of the invention will become apparent from the following nonlimiting description of at least one particular embodiment of the cooking device which is the subject of the present invention, with reference to the appended drawings. in which: - Figure 1 shows, schematically and in perspective, a first view of a particular embodiment of the device object of the present invention, - Figure 2 shows, schematically and in perspective, a second view of the embodiment particular of the device object of the present invention in which a secondary burner is actuated, - Figure 3 shows, schematically and in perspective, a third view of the particular embodiment of the device object of the present invention and - Figure 4 shows, schematically and in section, a succession of views of the particular embodiment of the device object of the present invention corresponding to particular positions of a moving mechanical part implemented by the device object of the present invention.

DESCRIPTION OF EXAMPLES OF EMBODIMENT OF THE INVENTION

This description is given in a nonlimiting manner, each feature of an embodiment being able to be combined with any other feature of any other embodiment in an advantageous manner. Furthermore, each parameter of an exemplary embodiment can be implemented independently of other parameters of said exemplary embodiment.

Note that the term "a" is used in the sense of "at least one".

It is already noted that the figures are not to scale.

It is noted, from now on, that all the interfaces between pipes, gas inlets, orifices allowing the transfer of gas can be sealed by the implementation of seals such as usually implemented by the man of the job.

FIG. 1, which is not to scale, shows a sectional view of an embodiment of the device 10 which is the subject of the present invention. This cooking device (10) comprises: - a primary gas burner 105 fed by a primary gas inlet 110, - at least one secondary gas burner 115 at least partially surrounding the primary gas burner 105, each gas burner 115 secondary being fed by an inlet 120 of secondary gas and - a movable trigger 125 of which: - a first position triggers the supply and ignition of the primary burner 105 and - a second position triggers the supply and ignition of the primary burner 105 and at least one secondary burner 115.

The primary gas burner 105 is, for example, an annular gas burner having a diffusion mechanism (not shown) of the gas supplied by the primary inlet 110 and an ignition mechanism (not shown) such, for example, a Electrode ignition.

The embodiment shown in FIG. 1 comprises a single secondary burner 115 of annular shape and completely surrounding the burner 105 so that the burners 105 and 115 form concentric circles also called "crowns", such an assembly of burners being called a "multi-crown" burner.

A flame path is positioned between the central crown and the successive crowns and allows to light these crowns with a single electrode. This flame path is important in view of the risk of failure and therefore of the safety of the whole.

In variants, the cooking device 10 comprises a plurality of secondary burners 115 at least partially surrounding the primary burner 105.

In variants, at least one secondary burner 115 only partially surrounds the primary burner 105 by forming, for example, an arc around the primary burner 105.

The flames from each burner, 105 and 115, are oriented on the same side of said burners, 105 and 115.

The primary 110 and secondary 120 inlets are, for example, independent gas conduits each respectively supplying the primary burner 105 and the secondary burner 115.

In variants, at least two inputs, 110 and 120, of primary and secondary gas are coaxial on at least one of their parts.

The movable trigger 125 comprises, for example, a rotary push button 170, the pressure of this button 170 causing the triggering of a spark and the rotation of this button 170 triggering the supply of the inlet 110 gas. The flow of gas to be fed is controlled according to the angle of rotation achieved by the button 170 from an initial position corresponding to a zero gas flow.

In addition, this trigger 125 preferably comprises a moving part, hereinafter referred to as "selector" 135, of which: a first position triggers the supply of the primary burner 105 with gas and a second position triggers the supply of the primary burner and at least one burner 115 secondary gas.

In embodiments, as illustrated in FIGS. 1 and 2, the cooking device 10 comprises a grid 205 for supporting a container above each burner, 105 and 115.

In embodiments, the primary 110 and secondary 120 gas inlets are fed by a common gas inlet 130, the common gas inlet 130 being controlled in opening and closing, depending on the positioning of the trigger 125. The inlet 130 common gas is, for example, a pipe fed by a pipe 180 for supplying a domestic gas network, the device 10 being connected to this pipe 180 supply.

In variants (not shown), the device 10 comprises a plurality of mechanical parts, each mechanical part obstructing or not an inlet 120 depending on the positioning of said part. The positioning of each piece is controlled independently by a user by the rotation of a button causing a mechanical movement of a mechanical part. Thus, for example, when all the mechanical parts are in the open position, all the burners are supplied with gas. Conversely, when no mechanical part is in open position, only the primary burner is supplied with gas.

In embodiments, as illustrated with reference to FIGS. 1, 2 and 3, the cooking device 10 comprises a casing 140 pierced with orifices, of which: an inlet orifice 145 is connected to the inlet 130 of common gas, - a primary supply port 150 is connected to the primary inlet 110 of the primary burner 105 and - for each secondary burner 115, a secondary supply orifice 155 is connected to the secondary inlet 120 of said secondary burner 115 , and a selector 135 rotatable and positioned facing the housing 140 between a first position and at least a second position for selectively supplying the primary supply port 150 and / or the secondary supply orifices 155.

The housing 140 is, for example, a solid housing fixed in an opening 215 of a housing 210 of the cooking device 10.

In variants (not shown), only the secondary supply orifices 155 can be blocked by a mechanical part 135 so that, at least, the primary burner 105 is supplied with gas.

In other variants (not shown), the secondary supply orifices 155 and the inlet orifice 145 can be blocked by a mechanical part 135.

In other variants, the cooking device 10 has no supply port 150, a permanent bypass connecting the common inlet 130 to the primary gas inlet 110.

In variants, as represented in FIGS. 1, 2 and 3, the casing 140 has a thickness sufficient to allow: the production of orifices 145 and 155, passing through the casing 140 on either side according to the dimension smaller casing 140 and - the embodiment of an orifice, 150 through the housing 140 according to another dimension of the housing 140, only the secondary orifices 155 can be blocked by a mechanical part 135.

Preferably, a single piece 135, called "selector" constitutes each moving mechanical part 135. This selector 135 obstructs one and / or other of the orifices, 145 and / or 155, of the movement of this selector 135 by a user, one or more orifices then being obstructed by a portion of the selector.

In embodiments, as illustrated with reference to FIGS. 1, 2 and 3, the selector 135 comprises at least one cavity 165 for the transfer of gas between the inlet orifice 145 and at least one orifice 150 of supply, the cavity 165 being disposed facing the housing and positioned: - facing the inlet orifice 145 in a first position, - facing the inlet orifice 145 and the feed orifice 150 primary in a second position and - at least opposite the inlet port 145 and at least one secondary supply port 155 in a third position.

Each cavity 165 is preferably positioned in a body 160 formed of rigid material and which has a flat surface positioned facing the housing 140 so that, depending on the rotation of the selector 135, at least one orifice may be covered by the flat surface . This flat surface makes it possible, in particular, to prevent the flow of gas from an orifice thus covered.

This body 160 is hollow on a part of the surface so that when this cavity 165 is positioned opposite an orifice, gas can flow from the cavity 165 to the orifice or from the orifice to the cavity 165 When the cavity is facing the inlet port 145 and at least one supply port 155, the gas flows from this inlet port 145 to the cavity 165 and to each supply port 155 positioned opposite the cavity.

In variants, a layer 245 of gastight material for the gas is positioned at the interface between the casing 140 and the flat surface of the body 160, this sealed material having an opening corresponding to the cavity 165 or the orifices. This waterproof material is, for example, made of polytetrafluoroethylene (known under the name "PTFE" of the skilled person).

In embodiments, as shown in FIG. 4, the cavity 165 has a shape of a circular arc, the feed orifices 155 being arranged on the surface along a path traversed by this circular arc when the selector is moved. 135.

In embodiments, such as represented in FIGS. 1, 2 and 3, the trigger 125 comprises a button 170 which is pushing and rotating, along an axis of rotation of the selector 135, a pressing on this button 170 triggering the ignition of the primary burner 105 and, by a flame path, each secondary burner 120 supplied with gas passing through the inlet orifice 145, a flow of gas passing through the inlet orifice 145 varying according to a rotation of the push button 170.

In embodiments, as shown in FIGS. 1, 2 and 3, the cooking device 10 comprises a safety control cock 175, feeding each gas inlet, 110 and 120, the valve being fed by a pipe 180 gas supply.

This valve 175 is, for example, a gas valve usually used by those skilled in the art. This valve 175 is connected to the button 170 by a control rod 220.

This valve 175 is configured to modulate the power of each burner.

This control rod 220 is clamped by a bearing 235 surrounded by a clamping element 240.

In FIG. 1, it can be observed in particular that only the primary burner 105 is actuated, the selector 135 being positioned in such a way that no secondary inlet 120 is supplied with gas.

FIG. 2 diagrammatically and in perspective shows a second view of the cooking device 10 of the present invention. In this second view, the primary burner 105 and the secondary burner 115 are actuated. In this second view, the selector 135 has been rotated so that the cavity 165 is positioned both opposite the inlet orifice 145 and the feed orifice 155 of the secondary burner 115.

FIG. 3 diagrammatically and in perspective shows a third view of the cooking device 10 of the present invention.

It is observed, in particular, that the selector 135 comprises a protrusion 225 serving as an index to be compared with a symbol 230 representative of the burners, 105 and 115, which are actuated if the trigger 125 is actuated. This index is positioned opposite a symbol 230 when the cavity 165 connects the inlet port 145 to the supply port 155 of each burner corresponding to the symbol.

FIG. 4 shows diagrammatically and in section, a succession of positions of the cavity 165 during the rotation of the selector 135: in the first position, only the inlet orifice 145 is covered by the cavity 165, only the primary burner 105 is supplied with gas, - in the second position, the inlet orifice 145 and a supply orifice 155 are covered by the cavity 165, the primary burner 105 and a secondary burner 115 are supplied with gas in the third position, the inlet orifice and two supply orifices 155 are covered by the cavity 165, the primary burner 105 and the two secondary burners 115 are supplied with gas. The assembly of a selector 135 as described above can be made in the following manner: a layer 245 of impervious material is superimposed on the flat face of the body 160 so that each opening of the layer 245 is positioned opposite the cavity 165 of the body 160, the openings of the layer 245 are each positioned opposite an orifice of the housing 140, an O-ring being positioned at each interface between an opening and an orifice, connection passes through an alignment of central openings of the body 160, the sealed layer 245 and the housing 140, this shaft having an O-ring at a first end - the connecting shaft is fixed at another end by a nut waterproof.

Claims (6)

1. Device (10) for cooking, characterized in that it comprises: - a burner (105) with primary gas supplied by a inlet (110) of primary gas, - at least one burner (115) secondary gas, each secondary gas burner being supplied by an inlet (120) of secondary gas, - a common gas inlet (130) and - a movable release (125) comprising: - an inlet orifice (145) connected to the inlet ( 130), - a primary supply port (150) connected to the primary (110) primary burner inlet (110) and ~ for each secondary burner (115), a secondary supply port (155) connected to the secondary inlet (120) of said secondary burner and - a selector (135), rotatable and positioned facing a housing, having a cavity (165) for the transfer of gas between the orifice (145) inlet and at least one supply port (150), of which: - a primary position triggers the flow of gas, through the cavity, from the common gas inlet to the primary gas inlet and - at least one secondary position triggers the flow of gas from the common gas inlet to the primary gas inlet and to each inlet of secondary gas positioned opposite the cavity for a position of the determined cavity. 2. Device (10) according to claim 1, wherein the cavity (165) has a circular arc shape, the feed ports (155) being arranged on the surface along a path traversed by this arc when moving the selector (135). 3. Device (10) according to one of claims 1 or 2, wherein the trigger (125) comprises a push button (170) and rotatable, according to an axis of rotation of the selector (135), pressing this button ( 170) triggering the ignition of the primary burner (105) and, by a flame path, of each secondary burner (120) supplied with gas passing through the inlet orifice (145), a flow of gas passing through the orifice (145) input varying according to a rotation of the push button. 4. Device (10) according to one of claims 1 to 3, wherein at least two inputs (110, 120) of primary and secondary gas are coaxial on at least one of their parts. 5. Device (10) according to one of claims 1 to 4, which comprises a safety control valve (175) controlled by the button (170), and supplying each inlet (110, 120) of gas, the valve being supplied by a gas supply pipe (180). 6. Device (10) according to one of claims 1 to 5, wherein the set of burners (105, 115) forms a burner muiti-crowns.