This application is the U.S. National Stage of International Application No. PCT/IB2018/056424, filed Aug. 24, 2018, which designated the United States and has been published as International Publication No. WO 2019/048970 A1 and which claims the priority of Spanish Patent Application, Serial No. P201731072, filed Sep. 5, 2017, pursuant to 35 U.S.C. 119(a)-(d).
The present invention relates to a pan support, a gas hotplate with such a pan support, and a gas cooker with such a gas hotplate and/or such a pan support. The invention further relates to a method for producing a pan support.
Gas hotplates generally comprise a cooktop plate with a through-hole, on which a gas burner is arranged. The gas burner has a gas valve for providing combustion gas, wherein the gas valve is generally arranged below the cooktop plate. Here, the combustion gas must be mixed with primary air to form a flammable combustion gas and air mixture. This generally takes place in a mixing chamber, which is arranged below the cooktop plate.
A gas hotplate can also comprise a pan support. Here, the pan support can be provided as a removable component in order to make the gas hotplate easier to clean, for example. The pan support is generally just a support structure, which is configured to hold a container for food to be cooked above the gas burner.
The gas burner usually comprises a burner upper part, which is arranged above the cooktop plate and has gas burner openings. The combustion gas and air mixture is provided at the gas burner openings in order to maintain a flame below the container for food to be cooked for the purpose of heating the same. The burner upper part and the pan support are embodied as separate components.
Against this background, an object of the present invention consists in providing an improved pan support.
Accordingly, a pan support for a gas cooker is proposed, with a support structure for a container for food to be cooked, which has a contact surface for the container for food to be cooked and a channel for a flammable combustion gas and air mixture, which channel leads to gas outlet openings.
The “contact surface” means for example a contact surface for pans. “Channel” means in particular a cavity which is surrounded along its extent by a solid material of the support structure and is configured to guide a fluid, in particular a combustion gas and air mixture, along its extent. For this reason, the channel is for example substantially gas-tight when all channel openings are closed. The channel can for example be divided at least in sections into several channel branches. The support structure comprises the gas outlet openings for providing a combustion gas and air mixture. The gas outlet openings are embodied for example as gas burner openings. The pan support is configured to provide a flame at the gas outlet openings for heating the container for food to be cooked.
A functional integration can be achieved by the gas outlet openings being embodied on the support structure, since the support structure supports the container for food to be cooked and can simultaneously provide the combustion gas and air mixture for generating and/or maintaining the flame. An additional gas burner cover or a burner upper part with gas outlet openings is not required, for example. Furthermore, an individual and high-quality design of the pan support, a gas hotplate and a gas cooker can be provided. A gas hotplate equipped with the pan support is also easier to clean.
According to one embodiment, the support structure is embodied in one piece or from a single piece of material.
This produces the advantage that the pan support is easy to handle, particularly when removing the pan support from a cooktop plate. “From a single piece of material” means that the pan support is manufactured, in particular cast, from one base material/raw material. For example, the pan support is manufactured by means of 3D printing. With a pan support manufactured from a single piece of material, complex joining steps can be dispensed with during manufacture. Moreover, a high-quality visual design of the pan support can be provided.
According to a further embodiment, the pan support comprises a pipe section for mixing primary air and combustion gas to form the flammable combustion gas and air mixture, wherein the support structure and the pipe section are embodied in particular in one piece or from a single piece of material.
In further embodiments, the pan support can be joined together from several parts. The channel can then be provided in just one part, which facilitates sealing.
For example, the pipe section can be designated as part of a venturi nozzle, venturi nozzle section and/or mixing chamber. Advantageously, in this way a pan support, a gas burner cover/burner upper part and a nozzle arrangement for forming a combustion gas mixture, such as a venturi nozzle, can be provided in one component. For example, primary air, which is mixed with combustion gas, is provided at an opening of the pipe section. In particular, the pipe section comprises a channel section. The pipe section extends for example in a vertical direction. A length of the pipe section is preferably greater than a distance between the contact surface and a support surface of the pan support on a cooktop plate.
According to a further embodiment, the support structure has at least two fingers, in particular precisely three, four, five or six fingers, which are arranged in particular radially about a central axis of the pan support.
A “central axis” can be understood to mean an axis that extends parallel to the vertical direction. Viewed from above, the central axis pierces through a radial center point, to which or at which the fingers point. For example, the fingers comprise a radial section, which extends in a radial direction running perpendicular to the vertical direction. Viewed in the cross-section, the radial section is embodied for example as a T-profile in order to enlarge the contact surface. The pipe section is for example arranged about the central axis so that the central axis embodies the longitudinal axis of the pipe section. For example, the fingers protrude away from the pipe section. In particular, the fingers comprise a support surface, which is configured to rest on a top side of the cooktop plate. For this reason, the fingers are configured in particular to be supported on a cooktop plate. Alternatively, the fingers can be attached to a base frame, which is supported on the cooktop plate and runs around the pipe section.
In embodiments, the fingers merge at the pipe section.
According to a further embodiment, the fingers are embodied to be L-shaped.
For example, a respective finger extends from the support surface initially in the vertical direction to form a column section, bends, and then extends in the radial direction R to form the radial section toward the central axis. A stable state of the pan support on the cooktop plate can thus be ensured. In embodiments, the pan support stands on a surface of a cooktop plate on the fingers, and the pipe section extends through an opening in the cooktop plate to below the cooktop plate, where it admits the combustion gas and air mixture into the channel.
According to a further embodiment, at least one of the fingers has the gas outlet openings.
The channel comprises for example channel branches, which are embodied in the fingers. The channel section arranged within the pipe section preferably splits into the channel branches, so that a fluid connection is embodied between the channel section and the channel branches.
According to a further embodiment, the gas outlet openings are arranged adjacent to one another along a direction of extension of the at least one finger.
Advantageously, a particular visual design of the pan support can be provided. Furthermore, heat can be transmitted evenly and over a large area to an underside of the container for food to be cooked. The gas outlet openings provided on one of the fingers are preferably provided at an equal height and spaced at an equal distance from one another.
According to a further embodiment, the gas outlet openings are open to one side of the finger.
For example, the gas outlet openings are embodied on a lateral surface or lateral wall of the radial section.
According to a further embodiment, at least one part of the gas outlet openings are open to the top.
The part of the gas outlet openings open to the top is embodied for example on a wall, which delimits the pipe section to the top and has a main extension plane that runs perpendicular to the vertical direction. Gas is therefore emitted directly upward on the least one part of the gas outlet openings. In particular, gas outlet openings embodied on the fingers and open to the side are also present.
According to a further embodiment, the at least one part of the gas outlet openings is formed between at least two contact surfaces for the container for food to be cooked, which are formed from different fingers, one of which is the contact surface.
The gas outlet openings open to the top are therefore arranged between the contact surfaces so that a flame can be provided centrally on the underside of the cookware.
A gas hotplate with a pan support as described above is also proposed.
According to one embodiment, the gas hotplate has a cooktop plate with at least one opening and a gas nozzle arranged below the cooktop plate for providing combustion gas, wherein a channel of the pan support extends at least partially through the at least one opening or has a fluid connection therewith, and wherein the channel is configured to guide a combustion gas and air mixture, comprising primary air and combustion gas, to the gas outlet openings.
The pan support is provided on the cooktop plate in particular in a removable manner. Because for example when the pan support is removed a top side of the cooktop plate is smooth and no protrusion, in particular a burner lid, is provided above the cooktop plate, the cooktop plate is easier to clean. The gas nozzle can for example project into the channel.
According to a further embodiment, the gas hotplate has a pipe section for mixing primary air and combustion gas to form a flammable combustion gas and air mixture, which pipe section is embodied in particular in one piece or from a single piece of material with a support structure of the pan support, wherein the pipe section pierces through the cooktop plate in a downward direction.
A lower opening of the pipe section, which is open to the bottom, is for example arranged directly above the gas nozzle. In this way, combustion gas can flow easily from the gas nozzle into the channel. This ensures that the combustion gas and air mixture can flow to the gas outlet openings. The pipe section extends through the opening of the cooktop plate and projects from an underside of the cooktop plate, for example.
This has the advantage that the pan support is connected in the radial direction to the cooktop plate in a form-fit manner. Furthermore, positioning aids can be provided on the pan support, in particular downwardly projecting protrusions, in particular pipe sections, which engage into openings of the cooktop plate in order to prevent rotation. Here, a single protrusion is sufficient to ensure that rotation is prevented. This makes it easier to attach the pan support to the cooktop plate. Alternatively, the lower opening of the pipe section can be open to one side of the pipe section and can have a fluid connection with a gas supply line extending in the radial direction.
According to a further embodiment, the support structure of the pan support has two, three, four, five or six fingers, which each comprise a contact surface for a container for food to be cooked and are supported on the cooktop plate.
The pan support is preferably supported on a top side of the cooktop plate. For example, the fingers are connected to the pipe section by being made from a single piece of material therewith.
In addition, a household appliance, in particular a gas cooker with a pan support as described above and/or a gas hotplate as described above, is proposed.
A method for operating a gas hotplate is also proposed, in which a combustion gas and air mixture is guided through a channel integrated in a pan support to gas outlet openings. The pan support is designed in particular as described above and in the following.
Furthermore, a method for producing a pan support is proposed, in particular as described above, wherein the pan support is produced by means of 3D printing, in particular selective laser sintering.
This has the advantage that complex shapes of pan supports can be produced. For example, the channel can already be provided within the pan support during 3D printing. Moreover, it is possible to consider individual customer requirements that cannot be produced using conventional methods (for large quantities) when producing pan supports of this kind.
The embodiments and features described for the proposed pan support apply correspondingly to the gas hotplate, the gas cooker and the proposed method.
Further possible implementations of the invention also comprise combinations—not explicitly cited—of features or embodiments described above or below in respect of the exemplary embodiments. In this context, the person skilled in the art will also add individual aspects as improvements or enhancements to the respective basic form of the invention.
Further advantageous embodiments and aspects of the invention form the subject matter of the subclaims and of the exemplary embodiments of the invention that are described below. The invention is also described in greater detail on the basis of preferred embodiments with reference to the attached figures.
In the figures, elements that are identical or have the same function are denoted by the same reference characters unless otherwise stated.
The household appliance 1 comprises two pan supports 2. The pan supports 2 are in each case configured to hold a container for food to be cooked (not shown in
The cooktop plate 3 can be a steel sheet, a glass plate or a glass ceramic plate, for example. Each pan support 2 is assigned a control element 4 for a gas valve or gas control valve, with the aid of which a combustion gas flow supplied to the respective pan support 2 can optionally be connected, disconnected and in particular steplessly switched on. Alternatively, the gas control valves can also be configured to regulate the combustion gas flow supplied to the respective pan support 2 in steps. This means that the gas control valves can be embodied as stepped gas control valves or what are known as step valves.
Each pan support 2 is assigned to a gas hotplate 5. For example, the pan supports 2 could be connected to, in particular made from one piece of material with, a base frame section (not shown in
Furthermore, a rear side 7 of the household appliance 1 is provided opposite the front side 6, which rear side usually faces away from the user who is standing in front of the household appliance 1. The household appliance 1 also comprises a left side 8 and a right side 9, which is arranged opposite the left side 8.
Viewed from above, the pan supports 2 have a cross shape with four fingers. As can be seen from
Each of the fingers 11 comprises a contact surface 12 for the container for food to be cooked and a support surface 13, which is provided to rest on the cooktop plate 3 and support the pan support 2 on the cooktop plate 3. Each of the fingers 11 extends from the support surface 13 initially in a vertical direction Z to form a column section 14, bends, and then extends in a radial direction R, which runs perpendicular to the vertical direction Z, to form a radial section 15 toward the central axis M. Here, the central axis M runs parallel to the vertical direction Z. As a result, the fingers 11 have an L shape. The radial section 15 is embodied as a T-shaped profile or T-shaped bar to enlarge the contact surface 12.
The pan support 15 further comprises a pipe section 16 for mixing primary air and combustion gas to form the flammable combustion gas and air mixture. The pipe section 16 is arranged centrally relative to the fingers 11 and extends in the vertical direction Z, so that the central axis M forms the longitudinal axis of the pipe section 16. The radial sections 15 are connected to the pipe section 16 on the outer peripheral surface 17 thereof. The support structure 10 and the pipe section 16 are embodied in particular in one piece or from a single piece of material.
The pipe section 16 is terminated in the vertical direction Z with a wall 18, which has a horizontal main extension plane E. The wall 18 extends parallel to the contact surfaces 12 and to the cooktop plate 3. Furthermore, the wall 18 is arranged below the contact surfaces 12. Moreover, the wall 18 comprises a plurality of gas outlet openings 19, which are open to the top. Viewed from above, the gas outlet openings 19 open to the top are arranged visibly between the four contact surfaces 12. The combustion gas and air mixture therefore exits directly upward.
Furthermore, at least one of the fingers 11 comprises the gas outlet openings 19. These are embodied on the radial section 15 and are arranged adjacent to one another along the radial direction R. The gas outlet openings 19 embodied on the radial section 15 are open to one side (in other words not to the top or to the bottom) of the radial section 15. As a result, the combustion gas and air mixture initially exits parallel to the contact surface 12. The gas outlet openings 19 embodied on the radial section 15 are accordingly arranged on lateral surfaces 20 of the radial section 15, which are embodied perpendicular to the contact surface 12. Furthermore, gas outlet openings 19 can be embodied on two opposite lateral surfaces 20 of a radial section 15.
Furthermore, the channel section 22 is delimited to the top by the wall 18 and opens into channel branches 23, which are arranged within the radial sections 15. The gas outlet openings 19 create accesses from an environment U, which surrounds the pan support 2, and the channel section 22 and channel branches 23. This enables the combustion gas and air mixture to reach the environment U, in which it can burn. A respective channel branch 23 extends in the radial direction R and ends within the respective radial section 15.
The pan support 2 is produced for example by means of 3D printing, in particular selective laser sintering. Here, it is possible to produce the fingers 11 and/or the pipe section 16 and/or the wall 18 as a component made from a single piece of material, in particular with channel section 22 provided therein and/or channel branches 23 provided therein and/or gas outlet openings 19 provided therein. For example, the pan support 2 is produced from a metal or the pan support has a metal.
In addition, a gas nozzle 28 open to the top is provided below the ring section 27 and the pipe section 16. The gas nozzle 28 has a fluid connection with a gas supply line 29 and is configured to provide the combustion gas. To this end, the gas nozzle 28 is arranged below the opening 24 so that the combustion gas can rise directly into the pipe section 16. In addition, primary air is provided at the opening 24 so that a flammable combustion gas and air mixture can be formed. The channel section 22 can be designated for example as a corresponding mixing chamber.
Alternatively, the opening 24 could be open to one side instead of to the bottom so that the combustion gas and air mixture can flow from the side into the pipe section 16.
The channel 21 of the pan support 2 thus extends at least partially through the opening 29. Alternatively, there may be no supporting molding 25 provided, so that the end 26 of the pipe section 16 is received directly by the opening 29 and is in contact with an inner side 32 of the same. As a further alternative, the pipe section 16 could have a fluid connection with the opening 29. For example, the pipe section 16 could project on the top side 31 of the cooktop plate 3, so that the opening 24 of the pipe section 16 is provided flush over the opening 29 of the cooktop plate 3.
As can be seen from
Furthermore, positioning aids could be provided on the pan support 2 in order to facilitate an attachment of the pan support 2 onto the cooktop plate 3. Such a positioning aid can be embodied for example as a protrusion, in particular a pipe section, which engages into an indentation of the cooktop plate 3. This ensures that rotation is prevented.
Alternatively or additionally, the channel 21 could also be provided in the column sections 14, wherein the column sections 14 could extend through openings (not shown in
Although the present invention has been described with reference to exemplary embodiments, it can be modified in numerous different ways. The pan supports can have different shapes, for example can describe arcs or have parallel fingers. It is also conceivable for a pan support to be assigned to several gas hotplates and to embody separate channels. A pan support can be joined together from several elements. An injection molding method, for example, can also be used for production.
Number | Date | Country | Kind |
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ES201731072 | Sep 2017 | ES | national |
Filing Document | Filing Date | Country | Kind |
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PCT/IB2018/056424 | 8/24/2018 | WO |
Publishing Document | Publishing Date | Country | Kind |
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WO2019/048970 | 3/14/2019 | WO | A |
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2731314 | Oct 2005 | CN |
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Entry |
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Number | Date | Country | |
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20230314006 A1 | Oct 2023 | US |