FOOD COOKING UNIT

Abstract

Food cooking unit composed of gas burners (1) and an ignition source (2) feed with gas through regulation electrovalves (3) and an ignition source electrovalve (13); a food monitoring sensor (5) focused towards the cooking zone and/or a weight sensor (15); at least one thermocouple (6) in thermal contact with the flames and in connection with a safety electrovalve (4) and an electronic control device (7) connected to said food monitoring sensor (5), to said at least one regulating electrovalve (3) and to the ignition source electrovalve (13) and that stores different regulation programs and that regulates the regulating electrovalve (3) and/or interrupts the thermocouple connection with the safety electrovalve in response to the signals obtained from the food monitoring sensor (5) and/or from the weight sensor (15) and/or the thermocouple (6).

Claims

1. Food cooking unit comprising: at least one cooking zone defined on top of at least one gas burner supplied with gas from at least one regulating electrovalve; an ignition source for each cooking zone, adjacent to the at least one gas burner of said cooking zone for ignition thereof, each ignition source being supplied with gas from one ignition source electrovalve; a safety electrovalve for each cooking zone connected to the correspondent at least one regulating electrovalve and ignition source electrovalve for regulation of the gas provided thereto; at least one food monitoring sensor for each cooking zone configured to monitor a cooking process carried out on the cooking zone and/or a weight sensor for each cooking zone configured to detect weight variations on the cooking zone; at least one thermocouple for each cooking zone in thermal contact with flames that apply heat to the cooking zone to generate a signal, and in connection with the correspondent safety electrovalve, which is configured to interrupt the gas flow when the signal generated is interrupted; an electronic control device connected to the at least one regulating electrovalve, to the at least one food monitoring sensor and/or to the weight sensor, the electronic control device stores different regulation programs of the at least one regulation electrovalve and is configured to regulate the at least one regulation electrovalve in application of one of the regulation programs in response to the signals obtained from the food monitoring sensor and/or from the weight sensor; and the electronic control device is also connected to the at least one thermocouple and is configured to interrupt the regulation program, closing the at least one regulating electrovalve and the ignition source electrovalve in response to an interruption of the signal generated by the at least one thermocouple.

2. The cooking unit according to claim 1 wherein the at least one thermocouple comprises at least one first thermocouple connected to the safety electrovalve, and at least one second thermocouple connected to the electronic control device.

3. The cooking unit according to claim 1 wherein the at least one thermocouple is in contact with the flame produced by the ignition source.

4. The cooking unit according to claim 1 wherein the food monitoring system comprises: an infrared sensor placed above the cooking zone and oriented thereto for remotely monitoring a temperature of a food placed on the cooking zone; and/or a camera placed above the cooking zone and oriented thereto for remotely obtaining images of a food placed on the cooking zone, the electronic control device implementing an image recognition algorithm and/or a trained neural network, and/or a trained machine learning model configured to determine a cooking status of the food placed on the cooking zone from the imaged obtained by the camera; and/or a temperature probe placeable on the cooking zone in thermal contact with, or embedded in, a food placed on the cooking zone for monitoring the food temperature, the temperature probe being connected to the electronic control device by wire or by wireless connection.

5. The cooking unit according to claim 4 wherein the electronic control device is configured to determine, from the information provided by the infrared sensor and/or by the camera, the presence of a cookware placed on the cooking zone or the presence and type and/or size of a cookware placed on the cooking zone, and to automatically select, execute and/or adapt the regulatory program in response to said determination.

6. The cooking unit according to claim 1 wherein the electronic control device is configured to determine, from the information provided by the food monitoring system and/or by the weight sensor, an intervention of a user on the cooking zone and/or the addition of ingredients on the cooking zone, and to automatically select, execute and/or adapt the regulatory program in response to said determination.

7. The cooking unit according to claim 1 wherein the electronic control unit is connected to an interface for selection, by a user, of the applicable regulation program selected from different stored regulation programs corresponding to different kitchen recipes or to different kitchen recipes adapted to different amounts of food and/or to different types and/or sizes of cookware.

8. The cooking unit according to claim 1 wherein the electronic control unit includes a data input to receive modifications of the stored regulation programs.

9. The cooking unit according to claim 1 wherein the data input is a wireless connection, and the modifications of the regulation programs are obtained from a remote data storage through the wireless connection.

10. The cooking unit according to claim 1 wherein the electronic control device is configured to emit warnings in response to the detection of an interruption of the signal of the at least one thermocouple.

11. The cooking unit according to claim 1, wherein said cooking unit includes, in connection with the electronic control device, a level sensor configured to detect any deviation level from horizontal of at least part of the cooking unit including a cookware support placed below the cooking zone for supporting a cookware thereon, the electronic control device being configured to automatically correct the detected deviation level by automatically actuating level adjusting devices of the cooking unit adapted to modify the inclination of at least part of the cooking unit, or to notify a user of a necessary manually adjustment the level adjusting devices of the cooking unit adapted to modify the inclination of at least part of the cooking unit.

12. The cooking unit according to claim 1, wherein the cooking unit includes at least one vibrator device attached to at least a portion of the cooking unit including a cookware support placed below the cooking zone for supporting a cookware thereon, the vibrator device being controlled by the electronic control device in application of the regulation programs.

13. The cooking unit according to claim 1, wherein the regulation electrovalve feeding each gas burner with gas is a single variable-pitch regulation electrovalve.

14. The cooking unit according to claim 1, wherein the regulation electrovalve feeding each gas burner with gas are several fixed-pitch electrovalves connected in parallel.

15. The cooking unit according to claim 1, wherein the cooking unit also integrates, in connection with the electronic control device, sensors selected from: gas supply pressure sensor of a gas feeding the cooking unit, the electronic control device (7) being configured to apply or adjust the regulation programs in response to the readings of said pressure sensor; atmospheric pressure sensor, the electronic control device (7) being configured to apply or adjust the regulation programs in response to the readings of said atmospheric pressure sensor; environmental humidity sensor, the electronic control device (7) being configured to apply or adjust the regulation programs in response to the readings of said environmental humidity sensor; room temperature sensor, the electronic control device (7) being configured to apply or adjust the regulation programs in response to the readings of said room temperature sensor; and/or any combination of the above.

16. The cooking unit according to claim 1, wherein the at least one cooking zone are a plurality of spaced apart cooking zones defined by on top of different spaced apart gas burners, the food monitoring sensors and/or weight sensors of the different cooking zones being in connection with a single centralized electronic control device in charge of regulating all the regulation electrovalves and ignition source electrovalves feeding all the cooking zones.

17. The cooking unit according to claim 16, wherein the different cooking zones are spaced apart in a vertical direction, defining overlapping cooking zones.

18. The cooking unit according to claim 1, wherein the cooking unit includes an auxiliary assembly comprising at least the regulation electrovalves, the ignition source electrovalve, the safety electrovalve and the electronic control unit, the auxiliary assembly and the components included therein being connected to the rest of the cooking unit through releasable connections.

19. The cooking unit according to claim 18 wherein all the releasable connections between the components included in the auxiliary assembly and other components external to the auxiliary assembly are axial releasable connections parallel to each other.

20. The cooking unit according to claim 1 wherein the cooking unit includes an electric battery supplying electrical energy at least to the electronic control device and to the sensors connected thereto.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0082] The foregoing and other advantages and characteristics will be more fully understood from the following detailed description of an exemplary embodiment with reference to the accompanying drawings, which should be taken in an illustrative and not limitative way, in which:

[0083] FIGS. 1A and 1B are schematic plan views of the food cooking unit according to two different embodiments, both provided with three gas burners in the form of concentric rings, each independently controlled by means of a variable pitch regulating electrovalve, in which the electrical and electronic part is shown in a diagram form and where the data and current connections are indicated with a dashed line, the embodiment shown in FIG. 1A including two thermocouple in thermal contact with the flame of the ignition source, one thermocouple in connection with the safety electrovalve and the other thermocouple in connection with the electronic control device, and the embodiment shown in FIG. 1B including one single thermocouple connected to the safety electrovalve through a relay connected to the electronic control device;

[0084] FIG. 2 is a schematic longitudinal section of the food cooking unit shown in FIGS. 1A and 1B, in which the electrical and electronic parts have not been included, and in which a possible cooking utensil in the form of paella-pan arranged on the cooking zone and also the field of vision of the infrared sensor or of the camera that covers the entire visible surface of a food contained in the cookware;

[0085] FIG. 3 shows an enlarged view of a vertical section of the arm that holds the infrared sensor;

[0086] FIGS. 4A and 4B shows a simplified diagram of two different embodiments of the present invention, both including a gas line represented with a double line, which passes through a safety electrovalve, and branches in one line feeding the ignition source passing through an ignition source electrovalve and two other branches feeding the gas burner passing through two fixed-pitch regulating electrovalves arranged in parallel. According to the embodiment shown in FIG. 4A, a thermocouple, adjacent to the flame of the ignition source, is directly connected to the safety electrovalve, and another thermocouple also adjacent to the flame of the ignition source is directly connected to the electronic control device. According to the embodiment shown in FIG. 4B, one single thermocouple in contact with the flame of the ignition source is connected to the safety electrovalve though a relay that acts as a switch controlled by the electronic control device. In both cases, data connections are shown in a dashed line that communicate the regulation electrovalves, the ignition source electrovalves, the food monitoring sensor and the weight sensor with the electronic control device;

[0087] FIGS. 5A and 5B show a schematic plan view of the food cooking unit according to two different embodiments, both equipped with three spaced circular gas burners, each defining a different cooking zone equipped with a food monitoring sensor. According to the embodiment shown in FIG. 5A, one thermocouple is connected to the safety electrovalve and another thermocouple is connected to the electronic control device. According to the embodiment shown in FIG. 5B, one single thermocouple is in connection with the safety electrovalve through a relay. In both embodiments, all food monitoring sensors, all regulation valves, all ignition source electrovalves and all relays when exist are controlled from a single electronic control device or centralized control unit.

DETAILED DESCRIPTION OF AN EMBODIMENT

[0088] The attached figures show embodiments of the present invention in an illustrative but not limitative manner.

[0089] According to an exemplary embodiment shown in FIGS. 1A and 1B the food cooking unit consists of three concentric annular gas burners 1, each consisting of a circular tube provided with multiple holes equidistant at the top radially distributed, sufficiently close so that a flame from one hole can ignite the gas expelled through the next hole. The set of gas burners 1 constitutes a cooking zone located immediately above said gas burners 1, where cookware supports allow a cookware to rest on said gas burners 1, being exposed to the heat generated by the combustion of the expelled gas through the holes. The area immediately above these cookware supports, located above the gas burners 1, constitutes a cooking zone.

[0090] Although circular burners have been illustrated in the drawings, they may adopt other annular configurations, including one or more elements.

[0091] Each circular tube is connected to a separate gas supply conduit, each of said supply tubes being connected to a single variable pitch regulation valve 3, or two several fixed-pitch regulation electrovalves 3 connected in parallel as shown in FIGS. 4A and 4B, that determines the flow of gas supplied to each gas burner 1. The flow of supplied gas is distributed through the annular tube and exits through said plurality of orifices where an ignition source 2 ignites it causing the gas flow supplied by all the orifices to ignite.

[0092] The use of variable pitch regulation valves 3 according to an embodiment allows a precise regulation of the gas flow supplied. The use of two fixed-pitch regulation electrovalves connected in parallel, for example one adjusted to provide 33% of the total maximum gas flow and the other adjusted to provide 67% of the total maximum gas flow, allow the regulation of three different intensity levels (33%, 67% or 100%) in an easy, reliable and unexpensive manner.

[0093] The cooking unit is proposed to also include an electronic control device or control unit 7, integrating, for example, a PLC (programmable logic controller), or any other type of programmable electronic device with the capacity to apply a regulation program. Said electronic control device 7 will have an interface 8 that will allow a user to be informed of different control parameters of the cooking unit, also allowing the user to select some regulation parameters of the electronic control device 7, such as control sequences for the gas burners 1 adapted to different cooking recipes, or to different sizes of cookware.

[0094] The electronic control device 7 is connected to regulating electrovalves 3, so that the gas flow supplied to gas burners 1 by said regulating electrovalves 3 is controlled by the electronic control device 7 and corresponds to the program of regulation selected.

[0095] The electronic control device 7 is also connected to an ignition source electrovalve 13.

[0096] The cooking unit also includes a food monitoring sensor 5 for each cooking zone configured to detect the cooking status of the food contained in the cooking zone, and/or a weight sensor 15 for each cooking zone configured to detect weight variations on the cooking zone.

[0097] According to the embodiment shown in FIGS. 1A, 1B, 4A and 4B, the food monitoring sensor may include an infrared sensor, or a camera located at the upper end of an arm 12, said infrared sensor or camera being above and focused on the cooking zone. This allows that, during the cooking of food in cookware located above the cooking zone, the infrared sensor can measure the temperature of said food throughout the cooking zone it covers, or the camera can send images of the food contained in the cooking zone to the electronic control unit which, through an image recognition algorithm and/or a trained neural network, and/or a trained machine learning model running on the electronic control device feed with said images of the camera can determine a cooking status of the food placed on the cooking zone.

[0098] Alternatively, or additionally, the food monitoring sensor 5 may be a temperature probe placeable on the cooking zone in thermal contact with, or embedded in, a food placed on the cooking zone for monitoring the food temperature, the temperature probe being connected to the electronic control device by wire or by wireless connection. For example, in FIGS. 4A and 4B the temperature probe is shown as a ball insertable in the cookware to be in contact with the food, said ball including a temperature sensor, a wireless communication antenna, and a battery to provide energy to the sensor and antenna. Optionally it can also include an induction antenna for a wireless charging the battery on a special support. The temperature probe may have another shape, such an elongated shape, a spiky shape, or a one-side-flat-shape with one or several temperature sensors. It can also include several nodes flexibly connected to each other, each node including a temperature sensor and having a different buoyancy.

[0099] The weight sensors 15 may be arranged to detect weight increases of the cooking unit, or parts thereof, for example being arranged on legs of the cooking unit or on a cookware support, configured to hold a cookware in the cooking zone, to detect the presence of a cookware, the increase in weight of the cookware by the addition of ingredients, or the reduction in weight of the cookware by the evaporation of water.

[0100] The electronic control device 7 can be configured to notify a user of the need to incorporate a quantity of a new ingredient in the area of cooking and to notify the user when the increase in weight detected by the weight sensor 15 coincides with the amount of the new ingredient to be incorporated so that it stops the incorporation of said new ingredient. Also, the evaporation of water can be monitored by the weight sensor 15, for example to determine when the water has been completely evaporated and the flames shall be turned off.

[0101] The food monitoring sensor 5 and/or the weight sensor 15 is connected to the electronic control device 7 to which it transmits the collected information, and said electronic control device 7 determines the precise regulation of the regulation electrovalves 3 in response to the readings obtained by the food monitoring sensor 5 and/or by the weight sensor and in application of the program selected by the user through the interface 8.

[0102] As a result, a user will be able to place a cookware on the cooking zone, include the required ingredients in the necessary quantities, which can be notified to the user through the interface 8 of the electronic control device 7, and activate the cooking. The cooking unit will be in charge of all the regulation and control of the intensity of the heat supplied to the food until its cooking is completed without requiring further user intervention.

[0103] The electronic control device 7 also includes a data input 9, in this case a USB port or equivalent, which allows updating the control programs or incorporating new control programs, such as new recipes. Alternatively, it is contemplated that the data entry is remote by wireless means, for example by means of a WIFI, Bluetooth, 3G, 4G, 5G or similar communication protocol.

[0104] All the regulating electrovalves 3 receive a gas supply from the same gas source, for example a fixed installation connected to the gas distribution network, or to a gas supply cylinder, however a safety electrovalve 4 will be interposed that will allow the gas supply to the regulation electrovalves 3 to be completely closed, and with them also to all the gas burners 1. Also, the ignition source is feed with gas from the same gas source through the safety electrovalve 4.

[0105] The safety electrovalve 4 is a safety element that closes the gas passage in the event of an accidental extinguishing of the flame of the gas burners 1 and of the ignition source 2 that allows a free exit of the gas. Said safety electrovalve 4 will be controlled and activated by a thermocouple 6 in thermal contact with the cooking zone and connected to safety electrovalve 4.

[0106] Typically, the ignition source 2 will be a radial gas burner transversal to the other annular gas burners 1, which will have a constant gas supply regardless of the regulation of the regulation electrovalves 3, that is to say that when all the regulation electrovalves 3 are completely closed ignition source 2 will continue to receive a sufficient gas supply to keep a flame burning. Said gas supply from the ignition source 2 is regulated from the safety electrovalve 4, so that the closure of said safety electrovalve 4 will also close gas supply to the ignition source 2. Between the ignition source 2 and the safety electrovalve 4 an ignition source electrovalve 13, controlled by the electronic control device is also included, allowing the electronic control device to completely closing all the gas feed to the cooking zone without intervening on the safety electrovalve.

[0107] To control the activation of the safety electrovalve 4, a thermocouple 6 is arranged in thermal contact with the cooking zone that is to say in thermal contact with the heat produced by the flames of the gas burners 1 or of the ignition source 2. In the present embodiment, the thermocouple 6 is in thermal contact with the flame of the ignition source 2

[0108] Subjected to said heat, the thermocouple 6 generates a weak electrical signal that is transmitted to the safety valve 4 through a conductor cable. When the thermocouple 6 cools down, supposedly due to the accidental extinguishing of the flame of the gas burners 1 or of the ignition source 2, the electrical signal is interrupted and the safety electrovalve 4 closes the gas passage completely closing off the cooking unit.

[0109] The electrical signal generated by the thermocouple 6 is extremely weak and the transmission of said signal to the safety electrovalve 4 suffers from losses due to the electrical resistance of the interposed elements, causing frequent false positives that close the gas supply unnecessarily. Furthermore, typically said conductor cable also includes a switch that allows a voluntary closing of the safety electrovalve 4 interrupting the electrical signal, said switch and its connections adding greater electrical resistance to the transmission of the signal.

[0110] In the present embodiment, it is proposed to dispense with said switch and to place, between the thermocouple 6 and the safety electrovalve 4, only one relay 10, preferably an oversized relay 10 by at least a factor of 1000. This allows reducing the power losses of the electrical signal generated by thermocouple 6, minimizing the connections between the two elements.

[0111] The relay 10 is in turn connected to the electronic control device 7 thus allowing the electronic control device 7 to detect the signal generated by the thermocouple 6. Thus, if the electrical signal generated by thermocouple 6 is interrupted, the electronic control device 7 can interrupt the regulation program that is running, and also notify the user that such interruption has occurred, for example by means of a light or acoustic warning signal.

[0112] The electronic control device 7 cannot prevent the safety electrovalve 4 from closing in the event that the signal generated by the thermocouple 6 is interrupted, however, it can intentionally interrupt said signal through the relay 10. This allows that the electronic device control 7 can actuate the closing of the safety electrovalve 4, and therefore control the total closure of the gas supply, for example when the electronic control device 7 is turned off, or when the selected program stops being applied.

[0113] A simplified version of this solution, but including a single gas burner, is shown schematically in FIG. 4B, where it can be seen that the electronic control device 7 does not have a direct connection with the safety electrovalve 4, but only has a connection with the relay 10, which allows it to interrupt the communication between the thermocouple 6 and the safety electrovalve 4 when the user wants to close the cooking unit or when the program determines that the cooking unit must be closed, but not being possible that the control unit could prevent the closing of the safety electrovalve 4 when the thermocouple stops sending a signal. As indicated, the aforementioned electronic thermocouple control arrangement also makes it possible to avoid false positives by delaying at will the thermocouple signal for a sufficient time to determine a closure of the safety electrovalve, when an uncontrolled gas leak has indeed occurred.

[0114] According to an alternative embodiment shown in FIGS. 1A and 4A, the thermocouple 6 is connected directly to the safety electrovalve 4, without any interposed relay 10, and an additional thermocouple 6, also in contact with the flame of the gas burner 1 or of the ignition source 2, is directly connected to the electronic control device 7. In this case, the electronic control device 7 cannot actuate directly on the safety electrovalve 4, but it can close all the regulation electrovalves 3 and also the ignition source electrovalve 13, extinguishing all flames of the cooking zone and producing the other thermocouple to detect such extinguishing and closing the safety electrovalve 4 in response.

[0115] Preferably, the entire assembly that constitutes the cooking unit is supported on a chassis 11 (see FIG. 2), which includes support legs and an external partition or panel that surrounds the cooking zone as protection. The arm 12 that supports the infrared sensor or the camera will, in this embodiment, be fixed on said chassis 11, for example by means of a screw with a manually operated knuckle, as shown in FIG. 3. This allows to fix and release the arm from the rest of chassis 11 manually, facilitating maintenance, replacement, cleaning, and transport-storage tasks. Furthermore, multiple fixing points can be provided on the chassis 11 allowing the position of the arm 12 to be modified according to the location or the preference of the user, which is of particular interest when several cooking units are arranged adjacent to each other.

[0116] Said arm 12 will be, for example, a metal plate whose upper end will be inclined at an angle, facing towards the centre of the cooking zone. At said upper end there will be an opening where an infrared transparent element 21 will be housed, after which the infrared sensor will be placed. This construction allows the distal end of the arm 12 to act as a protective screen 20, which will preferably be metallic or made of another heat-resistant and flame-retardant material, protecting the infrared sensor from heat or possible flames occurring in the cooking zone, since said infrared sensor 5 will be behind the protective screen 20.

[0117] The transparent infrared element 21, which will preferably be a germanium glass, is resistant to temperatures above 200° C., and allows infrared light to pass through it, not interfering with the infrared sensor.

[0118] According to a preferred construction, the distal end of the arm 12, which acts as a protective screen 20, will have a wider frustoconical hole on the side remote from the cooking zone. In this frustoconical hole a germanium glass will also be inserted with a frustoconical shape complementary to the shape of the hole. Subsequently, the infrared sensor is superimposed on said germanium glass and is fixed on the back of said protective screen 20, thus being retained in its position without the need for adhesives that could be damaged by high temperatures.

[0119] According to a further proposed embodiment, shown schematically in FIGS. 5A and 5B, the food cooking unit may have multiple gas burners 1 spaced apart from each other, each defining a different cooking zone and controlled by an independent regulation valve 3, thus allowing simultaneous cooking of several dishes.

[0120] In an alternative embodiment, it is provided that each gas burner 1 is supplied with gas through a single variable-pitch regulation valve 3.

[0121] In this embodiment, a single gas burner 1 has been shown in each cooking zone, but obviously each cooking zone can consist of multiple gas burners 1, similar to the one shown in FIG. 1, for example.

[0122] The gas burners 1 of each cooking zone will have an associated food monitoring sensor 5, monitoring the corresponding cooking zone and at least one thermocouple 6 to control that the flame of the gas burner 1 or of the ignition source 2 is not accidentally extinguished.

[0123] According to the embodiment shown in FIG. 5B the thermocouple 6 will be connected to a safety electrovalve 4 through a relay allowing cutting off the gas supply from that gas burner 1 if the flame is extinguished, in a manner identical to that previously described in other embodiments.

[0124] In an exemplary embodiment, all food monitoring sensors, all regulating electrovalves 3 and all relays 10 will be connected and controlled by a single centralized electronic control device 7, thus reducing costs and improving control.

[0125] Also. FIG. 5A shows and embodiment similar to the one shown in FIG. 5B, but each cooking zone including two thermocouple 6, one connected to the safety electrovalve 4 and one connected to the electronic control device 7.

[0126] In this example the presence of a safety electrovalve 4 associated with the burners of each cooking zone has been shown, however it is understood that there could be a single general safety electrovalve 4 that would close the gas supply to all burners if any of thermocouples 6 will detect a flame out.

[0127] Although in FIGS. 5A and 5B the different gas burners 1 have been graphed next to each other, it is understood that they could also be stacked on top of each other, thus achieving a compact structure that would allow many dishes to be cooked simultaneously in little space. Preferably such a construction will have a shared chassis or structure that will support all the gas burners 1 in said overlapping positions, as well as all the other associated elements that make up the cooking unit. Thus, the gas burners: [0128] are spaced apart in a vertical direction, defining overlapping cooking zones, or [0129] They are spaced apart in a vertical direction and separated by screens, defining overlapping cooking zones.

[0130] It is also foreseen that the cooking unit also integrates, in connection with the electronic control device 7, various sensors selected from: [0131] level sensor configured to detect the horizontality of the cooking unit, or part thereof; [0132] level sensor configured to detect the horizontality of the cooking unit or part thereof, the electronic control device 7 being configured to determine and notify a user of a necessary adjustment of each of a plurality of height legs adjustable of the cooking unit, or of a cookware support, the cookware support being adjustable in inclination and being configured to hold a cookware in the cooking zone; [0133] level sensor configured to detect the horizontality of the cooking unit or part thereof, the electronic control device 7 being configured to determine a necessary adjustment of each one of a plurality of height adjustable legs of the cooking unit , or of a cookware support, the cookware support being adjustable in inclination and being configured to hold a cookware in the cooking zone, and to automatically operate actuating means configured to actuate said height legs adjustable or said cookware support. [0134] pressure sensor of the gas supply that feeds the cooking unit, the electronic control device 7 being configured to apply or adjust the regulation programs in response to the readings of said pressure sensor; [0135] atmospheric pressure sensor, the electronic control device 7 being configured to apply or adjust the regulation programs in response to the readings of said atmospheric pressure sensor; [0136] environmental humidity sensor, the electronic control device 7 being configured to apply or adjust the regulation programs in response to the readings of said environmental humidity sensor; [0137] room temperature sensor, the electronic control device 7 being configured to apply or adjust the regulation programs in response to the readings of said room temperature sensor; [0138] internal temperature sensor that includes a probe needle insertable in a food located on the cooking zone, the electronic control device 7 being configured to apply or adjust the regulation programs in response to the readings of said internal temperature sensor;

[0139] In one embodiment, an electric battery integrated in the cooking unit or associated with the electronic control device 7 is provided, which will supply electrical energy to the latter and to the sensors connected to it.

[0140] According to an exemplary embodiment, the cooking unit further includes a vibrating device attached to the cooking unit or to a cookware support configured to hold a cookware in the cooking zone, the vibrating device being controlled by the electronic control device 7 in application of the regulation programs. In this exemplary embodiment, the cooking unit also preferably includes a cookware fixing device which can be selected from: [0141] magnet or electromagnet; [0142] adjustable clamps; [0143] elastic clamps; [0144] adjustable radial stops.

[0145] In accordance with another embodiment, it is provided that the electronic control device 7 of the cooking unit includes a proportional, integral and derivative controller configured to regulate the regulating electrovalves 3, adapting its flow rate, increasing it if it is below a target temperature or threshold value (referenced by the food monitoring sensor 5) or decreasing it if it exceeds the mentioned target temperature. This increase or decrease may be a maximum or a minimum depending on the orders that are established by the control unit 7, according to the program executed by said unit.

[0146] In relation to structural aspects of the cooking unit, it has also been provided that all the elements of the cooking unit other than the gas burners 1 form an auxiliary assembly, where the gas burners 1 are housed and connected to said auxiliary assembly and connected to the corresponding regulation valves 3 only by releasable connections accessible from the outside of the auxiliary assembly, and where the auxiliary assembly has a dimensioned passage for the free extraction of the gas burners 1 from the interior therethrough.

[0147] Likewise, and to facilitate maintenance tasks, in one embodiment, it is provided that each gas burner 1 is connected to a corresponding regulation valve 3 by means of a rigid duct that is interspersed with a section of gas injector, which contains an injector adapted to the type of gas supplied to the gas burner 1, the injector section being connected to the rest of the rigid duct by releasable connections and the injector section being removable in a transverse direction with respect to the rigid duct.

[0148] Alternatively, it is contemplated that the gas burners 1 and the associated elements that make up each cooking zone can be modules that can be added at will by connecting them to a central module that contains the electronic control device 7 and optionally also the regulation, ignition source and safety electrovalves 3, 13 and 4.

[0149] It will be understood that the different parts constituting the invention described in one embodiment can be freely combined with the parts described in other different embodiments even though said combination has not been explicitly described, if there is no harm in the combination.