Cooking apparatus

Abstract

A cooking apparatus includes a base having a lower heating module, a support structure carried by the base, and a cooking container supported by the support structure such that a gap between a bottom of the cooking container and an upper support surface associated with the lower heating module is maintained within a predefined gap range during cooking. The predefined gap range reduces conductive heat transfer from the cooking container back toward the lower heating module, thereby permitting sustained higher-temperature cooking. The cooking container may have a flat bottom or a curved or concave bottom configured to concentrate oil or food in a central cooking region.

Description

COOKING APPARATUSTECHNICAL FIELD

[0001] The present disclosure relates to cooking apparatuses and, more particularly, to a support architecture for holding a cooking container above a lower heating module at a controlled distance so as to reduce conductive heat feedback to the heating module while permitting high-temperature cooking.BACKGROUND

[0002] Background description includes information that may be useful in understanding the present invention. It is not an admission that any of the information provided herein is prior art or relevant to the presently claimed invention, or that any publication specifically or implicitly referenced is prior art.

[0003] In cooking apparatuses that use a lower heating module, particularly inductionbased systems, a cooking container positioned too close to the heating surface can transfer substantial heat back toward the underlying module and associated electronics. Such heat feedback can trigger protective shut-down, reduce usable cooking temperature, and impair repeatability in operations such as searing or stir frying.

[0004] Conventional container supports also perform poorly when small food quantities or minimal cooking oil are used, because a substantially flat cooking surface can spread oil and food radially outward and diminish concentration of heat in the central cooking zone. There remains a need for a cooking apparatus in which the container is held above the lower heating module within a predefined gap range that improves thermal isolation and supports a wider range of cooking quantities.OBJECTS OF THE INVENTION

[0005] A general object of the present disclosure is to provide a cooking apparatus in which a support structure maintains a predefined gap range between a cooking container and a lower heating module.

[0006] Another object of the present disclosure is to reduce heat transfer from the cooking container back to the lower heating module so that higher-temperature cooking can be sustained.

[0007] Another object of the present disclosure is to support flat-bottom or curved-bottom containers, including containers configured to concentrate small quantities of oil or food in a central cooking region.SUMMARY

[0008] According to one aspect, the present disclosure provides a cooking apparatus comprising a base having a lower heating module, a support structure carried by the base, and a cooking container supported by the support structure such that a gap between a bottom of the cooking container and an upper support surface associated with the lower heating module is maintained within a predefined gap range during cooking. By maintaining the predefined gap range, conductive heat transfer from the cooking container toward the lower heating module is reduced, thereby permitting continued operation at higher cooking temperatures.

[0009] In one implementation, the cooking container may have a flat bottom. In another implementation, the cooking container may have a curved or concave bottom configured to retain oil or food in a central region while still maintaining the bottom of the container within the predefined gap range. The support structure may be movable between a loading position and a cooking position and may include a leg or foot arrangement for stable support in the cooking position. A lid and microwave -generating device may optionally be provided as additional context for a hybrid cooking appliance, but the present invention resides in the thermally isolating support architecture.

[0010] The present disclosure relates to an improved, reliable, efficient, and safe cooking apparatus that allows micro wave heating or heating in combination with other modes of heating, such as open flame heating using gas burners, induction heating using an induction plate or any other similar traditional mode of heating, or during preparatory operations.

[0011] The proposed cooking apparatus allows traditional cooking steps that take place in open flame / induction and also gives the user an option to switch over to micro wave cooking to complete the cooking. In particular, the disclosed cooking apparatus overcomes the drawback of conventional apparatuses by ensuring proper engagement between the lid and the containers, and effectively and safely securing the lid on the container such that the container remains aligned to the lid irrespective of the movement of the lid and without any gaps. The disclosed cooking apparatus also keeps the container at a safer distance from the base or induction heater present in the base of the apparatus, thereby restricting the transfer of the heat from the heated container back to the base, thus, making the apparatus efficient by allowing the induction plate to remain on continuously for cooking operations needing high temperature.

[0012] In an embodiment, the disclosed cooking apparatus includes a base that comprises an induction plate, a container and a grill that is configured to support the container such that a gap between a bottom of the container supported by the grill and the upper surface of the induction plate is within a predefined gap range.

[0013] In an implementation, the container may include a flat bottom such that the flat base remains at the predefined height from the induction plate.

[0014] In another implementation, the container may include a curved bottom such that the gap between a bottom of the container and the induction plate at a center of the container has a first gap value, and the gap between the bottom of the container and the induction plate towards an outer periphery at a predefined radius from the center of the bottom of the container has a second gap value that is more than the first gap value. Each of the first and the second gap value can be within the predefined gap range.

[0015] In an implementation the defined radius can be at least equal to a radius of the induction plate.

[0016] In an aspect, the cooking apparatus may include a lid pivotally configured with the base for movement between an open position and a closed position. In the closed position, the lid may sit on the grill (also interchangeably referred to as support structure hereinafter) to cover the container to create an enclosed space between the lid and the container.

[0017] At least one microwave-generating device may be coupled with the lid as a source of microwaves. The at least one micro wave -generating device may enable microwave heating of contents of the container, when the lid is in the closed position. The at least one microwave-generating device may enable microwave heating of contents of the container in combination with heating by the induction plate from below.

[0018] In addition, the grill may be pivotally coupled to the base at a first end for movement between a raised position and a lowered position.The grill may inlcude a leg at a second end, to support the grill in the lowered position.The leg may include a foot portion. The foot portion in the lowered position of the grill may be configured to be supported on a surface that supports the base of the cooking apparatus.

[0019] In an alternate embodiment, the foot portion may be configured to snap-fit to a bottom portion of the base to secure the grill in the lowered position at a designated position that ensures the the gap between the container and the induction plate is within the predefined range.

[0020] In second embodiment, a cooking apparatus may include a base, a container, a grill that is configured to support the container. A lid is pivotally configured with the basefor movement between an open position and a closed position. The lid in a closed position sits on the grill creating an enclosed space between the container and the lid. A microwave generating device is coupled to the lid to generate microwaves when the lid is in the closed position to facilitate heating of the contents within the container using the generated microwaves. The grill includes a locking mechanism configured to prevent the lid from moving to the closed position when there is no container placed over the grill.

[0021] In an instance, the locking mechanism may include an engaging element slidably configured with the grill biased to a position in which the engaging element prevents the lid from moving to the closed position.

[0022] The engaging element may be slidably configured with the grill for movement in a radial direction between an inward position and an outward position. The engaging element may be biased to the inward psotion to prevent the lid from moving to the closed position. The engaging element may be configured to allow movement of the lid to the closed position when the engaging element may be in the outward position.

[0023] In addition, when the container is placed over the grill, the engagement of the container with the engaging element may result in the engaing element moving to the outward position and allow movement of the lid to the closed position. The engaging element may include at least one projection that projects upward from an upper surface of the grill.

[0024] The lid can include at least one aperture, and when the engaging element is in the inward position, the at least one projection may be out of alignment with the at least one aperture to prevent movement of the lid to the closed position. On the other hand, when the engaging element is in the outward position, the at least one projection may be in alignment with the at least one aperture to allow movement of the lid to the closed position.

[0025] Further, the base may include a heat source to provide heat to the container from below in combination with heating of contents of the container by the microwave generating device. The heat source may be an induction plate. The grill may be configured to support the container such that a bottom of the container remains at a predefined height above the induction plate.

[0026] The present invention provides an induction cooking apparatus designed to mitigate the heat feedback to underlying electronics and achieve higher cooking temperatures. A key aspect of the invention lies in a “floating” pan design, wherein the pan is suspended or supported such that there is a defined air gap (approximately 4 mm) between the pan’s base and the induction glass surface. This air gap significantly reduces thermal conduction back through the glass, protecting the internal electronics and enabling higher temperature cooking.

[0027] Furthermore, the pan features a concave curved bottom, which serves to pool a minimal quantity of oil — approximately 5 to 10 ml — at the center of the cooking surface. This design ensures efficient usage of oil while allowing uniform heat distribution. The pan’s geometry supports better searing, browning, and poaching capabilities, as the high-heat zone remains concentrated where the oil naturally pools. Together, these improvements address the longstanding challenges found in traditional induction cooking systems and enhance the cooking experience.

[0028] Various objects, features, aspects and advantages of the inventive subject matter will become more apparent from the following detailed description of preferred embodiments, along with the accompanying drawing figures in which like numerals represent like components.BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The accompanying drawings are included to provide a further understanding of the present disclosure and are incorporated in and constitute a part of this specification. The drawings illustrate exemplary embodiments of the present disclosure and, together with the description, serve to explain the principles of the present disclosure.

[0030] The present disclosure relates generally to cooking appliances and, more particularly, to an induction cooking apparatus featuring a “floating” pan design that is suspended above the induction heating surface with a defined air gap. This design facilitates improved thermal isolation, allows higher cooking temperatures, and enables more efficient cooking with minimal oil usage.

[0031] Induction cooking appliances are widely used in both domestic and commercial settings due to their energy efficiency, rapid heating capability, and precise temperature control. Induction cooking relies on electromagnetic fields generated by a coil beneath a glass or ceramic top surface. Heat is produced directly in the metal cookware placed above the induction coil, rather than through conduction from a conventional heating element.

[0032] FIGs. 1A and IB illustrate exemplary perspective and side views respectively of the disclosed cooking apparatus having a base with an induction plate, a lid with a microwave generating device pivotally coupled to the base, and a grill to support a container over the base, , in accordance with embodiments of the present invention.

[0033] FIGs. 1C and ID illustrate exemplary side views of the cooking apparatus of FIGs. 1A and IB, showing pivotal movement of the grill, in accordance with embodiments of the present invention.

[0034] FIG. IE illustrates another exemplary side view of the cooking apparatus of FIG. IB, showing the container having a curved bottom, in accordance with embodiments of the present invention.

[0035] FIGs. 2Ato 2F illustrate exemplary views of the disclosed cooking apparatus of FIG. 1A, showing the fitment of the container on the grill and working of a locking mechanism that prevents movement of the lid to a closed position when there is no container placed over the grill, in accordance with embodiments of the present invention.

[0036] FIG. 3 illustrates an exemplary side view of the disclosed cooking apparatus of FIG. 1A with a container having the curved bottom, in accordance with embodiments of the present invention.

[0037] FIG. 4 illustrates an exemplary perspective view of the disclosed cooking apparatus of FIG. 1A with a container having a flat shape, in accordance with embodiments of the present invention.DETAILED DESCRIPTION

[0038] The following is a detailed description of embodiments of the disclosure depicted in the accompanying drawings. The embodiments are in such detail as to clearly communicate the disclosure. However, the amount of detail offered is not intended to limit the anticipated variations of embodiments; on the contrary, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the present disclosure as defined by the appended claims.

[0039] Each of the appended claims defines a separate invention, which for infringement purposes is recognized as including equivalents to the various elements or limitations specified in the claims. Depending on the context, all references below to the "invention" may in some cases refer to certain specific embodiments only. In other cases, it will be recognized that references to the "invention" will refer to subject matter recited in one or more, but not necessarily all, of the claims.

[0040] Various terms are used herein. To the extent a term used in a claim is not defined, it should be given the broadest definition persons in the pertinent art have given that term as reflected in printed publications and issued patents at the time of filing.

[0041] The present disclosure relates to a cooking apparatus comprising: a base having a lower heating module (also referred to as traditional heating means and / or induction plate) and an upper support surface associated with the lower heating module; a support structure (also referred to as a grill) carried by the base; and a cooking container supported bythe support structure such that a gap between a bottom of the cooking container and the upper support surface is maintained within a predefined gap range during cooking, whereby conductive heat transfer from the cooking container toward the lower heating module is reduced so as to permit sustained higher-temperature cooking.

[0042] In another aspect, the cooking container comprises a substantially flat bottom arranged to remain within the predefined gap range above the upper support surface. The cooking container can further include a curved or concave bottom such that a first gap value at a central region of the bottom is smaller than a second gap value at a radially outward region of the bottom while both of the first gap value and the second gap value remain within the predefined gap range. In another aspect, the curved or concave bottom is configured to retain cooking oil and / or food in a central cooking region. In another aspect, each of the second gap value and the second gap value is within the predefined gap range. The predefind radius can be at least equal to a radius of the induction plate.

[0043] In another aspect, the device further includes a lid movable to a closed position over the cooking container, the lid carrying at least one microwave -generating device so that the cooking container can optionally be subjected to microwave heating in addition to heating from the lower heating module. In another aspect, the support structure is pivotally mounted relative to the base for movement between a loading position and a cooking position. In another aspect, the support structure comprises a leg at a free end thereof for supporting the support structure in the cooking position. In another aspect, the leg comprises a foot portion configured to rest on a support surface and / or to snap-fit to a portion of the base in the cooking position.

[0044] The present disclosure provides an improved cooking apparatus that allows microwave heating in combination with other modes of heating, such as induction heating using an induction plate, heating using a hot plate, or any other similar traditional mode of heating. Conventional cooking apparatuses for multiple modes of heating have the drawback of inefficient and ineffective engagement between the lid and the containers, making the apparatuses less secure and unreliable. In addition, to ensure safety, the container needs to be effectively and safely secured to the lid such that a completely enclosed space is formed therebetween before the microwave generating device is turned on. The known devices fail to meet this requirement. Further, transfer of the heat from the heated container back to the induction plate of the apparatus prevents continuous operation of the induction plate, as inbuilt safety features of the induction plate turns off the induction system when temperature of the induction plate exceeds a safe limit. This prevents the container attaining a high temperature, making the induction plate unsuitable to cooking operations needing high temperature. In anembodiment, the cooking apparatus of the present disclosure includes a cradle-shaped grill, which is movably coupled to a base of the apparatus and is adapted to hold the container keeping the bottom of the container away from the induction plate, thereby preventing transfer of the heat from the heated container back to the induction plate by conduction. In an aspect, the grill can be configured to maintain a gap between the container and the induction plate within a predefined range. The predefined range can be determined empirically for optimum results.

[0045] In another aspect, the grill also enables use of a container with a curved bottom, which is helpful in enabling cooking of small quantity of food items by preventing its spreading radially outwards.

[0046] In an embodiment, the locking mechanism provided in the grill can include an engaging element slidably configured with the grill and biased to a position where the engaging element prevents the lid from moving to the closed position, but configured to move, when the container is placed over the grill, to a position that allows the lid to be moved to the closed position. Further, movement of the lid, in absence of the container, to the closed position is prevented by a combination of projection provided with the engaging element and apertures in the grill. The projections of the engaging element and apertures in the grill are configured such that the projections, when there is no container, are not aligned with the apertures to prevent closing of the lid. On the other hand, when the engaging elements move as a result of the container being placed over the grill, the projections and the apertures are in alignment to allow closing of the lid over the grill.

[0047] The floating pan cooking apparatus comprises: a base housing an induction heating module, an induction glass or ceramic top mounted on the base to protect the induction module and support cookware, and a floating pan positioned above the induction glass, wherein the pan is suspended or otherwise supported to maintain an air gap of approximately 4 mm (non-limiting) between the pan’s bottom surface and the top surface of the induction glass.

[0048] The specific geometry of the pan’s bottom is concave (6) can be designed to retain minimal amounts of cooking oil (5-10 ml) in the central region. By maintaining the air gap, the apparatus significantly reduces back-transfer of heat to electronic components, allowing cooking temperatures to be raised without risk of damaging the induction module or associated circuitry.

[0049] Base and Induction Heating Module: The base can be constructed from heat-resistant polymers, metals, or composite materials.

[0050] The induction heating module comprises a high-frequency induction coil, power circuitry, and control electronics for temperature regulation. The induction coil is typically placed directly beneath the induction glass to ensure efficient coupling with the cookware.

[0051] Induction Glass or Ceramic Top: The top surface material (e.g., tempered glass or a suitable ceramic) can be designed to withstand quick temperature changes and provide a smooth surface. The induction glass protects the induction coil from splatters, drips, and physical damage. The top surface can incorporate printed markings or a ring indicating the optimal placement for the pan.

[0052] Floating Pan: The floating pan can be dimensioned to fit over the area of the induction heating module, but it does not rest directly on the induction glass. Instead, small standoff elements or supports ensure that the bottom of the pan is spaced approximately 4 mm above the induction glass.

[0053] These supports can be made of heat-resistant materials (e.g., silicone, ceramic, or high-temperature-resistant plastic) and are strategically placed around the circumference or underside of the pan to maintain a stable and level cooking surface.

[0054] Concave Curvature: The bottom interior surface of the pan is concave, focusing liquids and oil in the center. This geometry allows for minimal oil usage (about 5-10 ml) while still achieving effective lubrication and heat transfer.

[0055] Air Gap: The defined air gap is a critical aspect of the invention. Measuring approximately 4 mm, it substantially reduces conductive heat transfer from the pan to the induction glass.

[0056] By limiting heat conduction downward, less heat accumulates in the induction module area, safeguarding the electronics from potential overheating.

[0057] The air gap also reduces the overall thermal load on the cooktop, enabling higher pan temperatures suitable for searing, browning, and other high-heat cooking methods.

[0058] Operational Principles: Induction Heating: When the cooking apparatus is activated, electric current flows through the induction coil beneath the induction glass. This creates an oscillating electromagnetic field.

[0059] The floating pan, typically made from ferromagnetic metals or suitably induction-compatible alloys, couples with this electromagnetic field, generating eddy currents in the pan’s material. These eddy currents resist the metal’s electrical flow, thereby generating heat directly within the pan body. Heat can thus localized in the pan, rather than conducted through an intermediate heating element.

[0060] Minimal Heat Feedback: Owing to the air gap, the majority of heat remains in the pan. Only minimal thermal conduction occurs through the standoffs and the surrounding air. This arrangement prevents excessive temperatures on the induction glass surface and the electronic components beneath.

[0061] Uniform Heating & Oil Pooling: The concave interior bottom design allows cooking oil to collect near the center, forming a thin but consistent layer.

[0062] Food items placed in this central region benefit from highly efficient searing and browning as the heat is concentrated and the oil is used optimally.

[0063] This reduces overall oil consumption while improving cooking outcomes.

[0064] Thermal Isolation for High-Temperature Cooking: By mitigating heat feedback to the electronics, the system can operate at higher power or temperature ranges, suitable for tasks like stir-frying, searing, and poaching, without risking damage to the induction module.

[0065] The proposed design enables enhanced thermal isolation, wherein the air gap significantly limits heat conduction to the cooktop body, prolonging the lifespan of internal components. The proposed design further allows for higher cooking temperatures such that induction coils can safely operate at higher power levels, enabling the pan to reach temperatures required for high-heat cooking techniques.

[0066] The proposed design further allows reduced oil requirement: The concave pan bottom enables the use of minimal oil, contributing to healthier cooking and cost savings.

[0067] The proposed design further enables an improved cooking performance: Concentrated heating and oil pooling enhance browning, searing, and flavor development in foods.

[0068] Additionally, the proposed design allows for additional safety and cleaning, wherein lower temperatures on the induction glass reduce the risk of accidental bums.

[0069] The pan can be easily removed for cleaning, and the glass surface beneath it may accumulate less splatter due to the elevated position of the pan.

[0070] In an exemplary additional alternative embodiment, varying air gap can be provided for, wherein while approximately 4 mm is disclosed as a preferred air gap, the gap may range from 2 mm to 6 mm in alternative designs, depending on thermal management or cookware size.

[0071] Additionally, alternative pan shapes can be provided for, wherein the concave bottom may assume different curvatures or shapes (e.g., hemispherical, elliptical), as long as it achieves the function of pooling oil and supporting even heat distribution.

[0072] Furthermore, the proposed design can provide for additional support structures, wherein instead of small standoffs, a continuous ring or a series of ridges could maintain the pan above the glass surface. These supports can be integral to the pan or part of the cooktop surface itself.

[0073] Furthermore, the proposed design can provide for modular or detachable components, wherein the pan could be designed as a detachable module with a built-in sensor to communicate with the induction base, optimizing temperature control and cooking modes.

[0074] Furthermore, the proposed design can provide for induction compatibility, wherein the pan may be constructed from various ferromagnetic materials, stainless steels, or multi-layered metal composites to enhance induction heating efficiency.

[0075] In an aspect, the present disclosure relates to a cooking apparatus comprising: a base having an induction heating module; a top surface above said induction heating module; and a pan suspended above said top surface of the induction module to create an air gap between the pan’s base and the top surface, thereby providing thermal isolation of underlying electronics. In an aspect, the pan can include a concave curved bottom configured to retain minimal cooking oil in the central region (approximately 5-10 ml) for efficient searing, browning, or poaching. In another aspect, the floating arrangement of the pan maintains a consistent thermal isolation enabling significantly higher cooking temperatures without damaging the underlying electronic components. In another aspect, the pan can be supported by one or more standoff elements made of heat-resistant material, the standoff elements being attached to either the pan or the top surface.

[0076] In another aspect, the top surface can be composed of induction-compatible glass or ceramic capable of withstanding temperature fluctuations without cracking. In another aspect, the concave curved bottom of the pan is shaped such that oil naturally pools at a central point, ensuring minimal oil usage and promoting even heat distribution.

[0077] In another aspect, the air gap ranges from 2 mm to 6 mm, based on the power output of the induction module and the desired level of thermal isolation.

[0078] In another aspect, the pan can be constructed from a multi-layer metal composite, comprising at least one ferromagnetic layer optimized for induction heating.

[0079] In another aspect, the temperature sensing elements can be operably connected to a control system, wherein the control system adjusts the induction heating power to maintain a predetermined temperature in the floating pan. In another aspect, the apparatus can further include a sealing or protective barrier around the periphery of the induction glass to prevent spillages or debris from entering the space under the floating pan. In another aspect, the pancan be detachable for ease of cleaning and maintenance, and wherein the base is configured to accommodate pans of varying shapes and sizes while preserving the air gap.

[0080] In another aspect, the concave curved bottom can further include a non-stick coating to reduce food adhesion and facilitate cleaning.

[0081] The present disclosure relates to a cooking apparatus featuring a floating pan design for induction heating. In a non-limiting aspect, pan with a concave curved bottom can be suspended above an induction glass surface, forming an air gap (approximately 4 mm) that significantly reduces heat feedback to the underlying electronics. The concave bottom consolidates minimal cooking oil (5-10 ml) near the center of the pan, enabling efficient searing, browning, and poaching. This “floating” configuration allows higher cooking temperatures by preventing excessive heat transfer to sensitive electronic components. The result is improved thermal isolation, energy efficiency, and cooking performance while preserving device longevity.

[0082] Referring now to FIGs. 1A to ID and 2A to 2F, where exemplary representations of the disclosed cooking apparatus are disclosed, the cooking apparatus 100 can include a base 102, a lid 104 that is pivotally coupled to a housing pillar 106 that extends vertically up from the base 102. The pivotal coupling of the lid 104 to the housing pillar 106 is through a self-aligning hinge that allows the lid to tilt left side or right side thereby providing a self-aligning functionality to the lid in the left-right direction. Further, a cradle-shaped grill 108 (hereinafter referred to as “grill”) can be pivotally coupled to the base 102 at a first end for movement between a raised position and a lowered position. The grill 108 can further include a leg 112 at second end to support the grill 108 in the lowered position. The grill 108 can also be coupled to the housing pillar 106, and can be configured to hold a container 110 such as at an upper rim 110-1 of the container 110, without the bottom of the container 110 resting on the induction plate 122 provided on the base. The container 110 includes an inner cavity 110-2 within the upper rim 110-1, which is configured to hold food items being cooked.

[0083] The grill 108 can be pivotally configured with the base 102 or the housing pillar 106 for movement between a raised position and a lowered position. The grill 108 can have or be operatively coupled with a proximally located leg 112 that may include a foot portion 114. The foot portion 114 in the lowered position of the grill can be configured to be supported on a surface where the base 102 is placed. The leg 112 can also be used to lift or lower the proximal side of the grill 108 and the container 110 located thereon to tilt the container 110 in a front-rear direction as shown in FIG. 1C.

[0084] In an embodiment, in the lowered position, the grill (108) can be configured to support the container 110, such as from the rim 110-1 of the container 110, such that gap between a bottom of the container 110 supported by the grill 108 and an upper surface of the induction plate is within a predefined gap range. The container 110 can include a flat bottom such that the flat base remains at the predefined height from the induction plate 122 as shown in FIG. ID. Alternatively, the container 110 can have a curved bottom to allow cooking of small quantities, while maintain the gap between the container 110 and the induction plate 122 within the predefined range, less at center of the container 110 and more towards the outer periphery of the container 110 as shown in FIG. IE.

[0085] In exemplary aspect, the leg 112 can include a foot portion 114. In an embodiment, the foot portion 114 can be configured to snap-fit to a bottom portion of the base 102 to secure the grill 108 in the lowered position and supported by the base 102 such that the gap between the container 110 and the induction plate 122 is within the predefined range. Further, the foot portion 114 can be disengaged from the bottom portion of the base 102 upon pulling the leg 112 upwards away from the base 102, to allow the grill 108 to move or be inclined towards the raised position as shown in FIG. 1C.

[0086] In an embodiment, the grill 108 can include an engaging element 116, such as at the top of the leg of the grill 108. The engaging element 116 can be configured to slide in a radial direction between an inward position and an outward position, as shown in FIG. 2D by an arrow. Further, the engaging element 116 can be biased to remain in the inward position, and can engage with the rim 110-1 of the container 110 and move to the outward position against the biasing force, when the container 110 is placed over the grill 108, such as by placing the rim 110-1 of the container 110 on the grill 108, and pressed down, as shown in FIGs. 2A to 2D. In an exemplary embodiment, the container 110 can be adapted to engage and push the engaging element 116 of the grill 108 radially outwards. For example, a curved edge of the rim 110-1 of the container 110 can slide over and engage with the engaging element upon pressing the container 110 on the grill 108. When the container 110 is removed from the grill 108, the biasing force on the engaging element 116 can move the engaging element 116 back to the inward position.

[0087] The lid 104 can be pivotally configured with the base 102 for movement between an open position and a closed position. In the closed position, the lid 104 can sit on and get locked to the grill 108 and create an enclosed space with the container 110 by covering the container 110, as shown in FIG. 2F. In the closed position of the lid 104, the microwave generating device 126 can be operated to provide additional heat using microwaves in additionto heating of the container from below by the induction plate, or the hot plate as the case may be.

[0088] In an aspect, the locking mechanism, of which the engaging element 116 is a part, works to prevent closing of the lid 104 over the grill 108 and thereby preventing activating the microwave generating device 126, when there is no container 110 placed on the grill 108. The locking mechanism includes, besides the at least one engaging element 116, at least one aperture 120 provided in the lid 104 which are configured to receive a set of projections 118 of the engaging element 116 that project upwards from the grill 108 such that for the lid to fully close, i.e., move to the closed position, the projections 118 should be received in the corresponding apertures 120.

[0089] In an aspect, the engaging element 116 can be configured such that, in the inward position of the engaging element 116, the projections 118 are out of alignment with the apertures 120, thereby preventing the lid 104 to move to the closed position. Thus, when there is no container 110 placed on the grill 108, and as result of the biasing of the engaing element 116, the engaging element 116 is in the inward position, the lid 104 cannot be closed. This prevents operation of the microwave generating device 126 through a safety circuit that prevents putting ON the microwave generating device 126 unless the lid 104 is fully in the closed position.

[0090] On the other hand, in the inward position of the engaging element 116, such as when the container 110 has been placed over the grill 108, the projections 118 are in alignment with the apertures 120, thereby allowing the lid 104 to move to the closed position by receiving the projections 118 within themselves. Thus, when the container 110 is placed on the grill 108, and as result the engaging element 116 is in the outward position, the lid 104 can be closed and the the microwave generating device 126 can be put ON.

[0091] In an embodiment, the base 102 can include a heat source 122 to provide heat to the container from below in combination with heating of contents of the container by the microwave generating device 126. The heat source 122 can be an induction plate. The grill 108 can be configured to support the container 110 such that a bottom of the container 110 remains at a height above the induction plate to create a predefined air gap 124 therebetween. The predefined gap 124 can be configured to ensure continuous operation of the induction plate 122 without getting heated above a safe operating temperature of the induction plate 122, thus enabling to achieve a higher temperature of the container 110.

[0092] In another aspect, the container 110 can be configured as a pan, wherein in gap can be configured / maintained between the pan / container and the base. It would be appreciatedthat the present invention can also be implemented without the grill and / or the induction plate in a manner such that the pan is positioned directly on the base, and a gap is maintained therebetween. In such an embodiment, the pan can be envisioned to be floating on the base. In another exemplary embodiment, the pan can also have a depression towards its center as has been explained in the present disclosure. In another aspect, the container / pan can have a concave or curved bottom that is suspended above the induction surface so as to create an air gap that reduces heat transferred to the base (there by protecting electronics) and focuses heat on the center for efficient cooking / sauteing / priming with minimum oil.

[0093] In another aspect, the proposed apparatus, through its structural design ensures high cooking temperatures without damaging induction glass / or cooking. The floating pan / container, as explained above, helps maintain external electronic components below a safe threshold temperature, even when the pan surface exceeds 200-degree C.

[0094] The proposed apparatus, in another exemplary embodiment, apparatus can further include a dual vent system, wherein a primary vent / knob can be configured for pressure release, and a secondary drainage hole can be configured at the lowest parameter of the lid to expel accumulated moisture automatically when opened, which can help prevent condensation from returning from the food.

[0095] In yet another exemplary aspect, the lid / top portion of the apparatus 100 can include a temperature sensor to measure internal ambient temperature of the apparatus. In an alternate embodiment, such a temperature sensor can also be configured in any other part of the apparatus such as on the inside of the container 110 to measure temperature of the food ingredients. A temperature sensor can further be positioned on the outside of the container 110 to measure environmental temperature.

[0096] FIG. 3 shows the apparatus 100 with a container 110 having a curved bottom supported by the grill 108 at the rim of the container 110 such that the gap 124 between a bottom of the container 110 and the induction plate 122 is less at a center C of the container 110 and more towards an outer periphery of the bottom of the container. The curvatutre of the bottom of the container 110 can be configured to meet the requirement of the gap 124 being within the oredefmed gap range for a continueous operation of the induction plate without getting switched off due to its temperature exceedin a safe operating limit due to transfer of heat from the container 110 to the induction plate 122. The curved bottom can be helpful in enabling cooking of small quantity of food items by preventing its spreading radially outwards.

[0097] As also shown in FIG. 3, at the center C of the container 110 has a first gap value 124-1 and the gap between the bottom of the container 110 and the induction platetowards an outer periphery at a predefined radius R from the center C of the bottom of the container 110 has a second gap value 124-2 that is more than the first gap value 124-1. Each of the first gap value 124-1 and the second gap value 124-2 can be within the predefined gap range.

[0098] In an implementation the defined radius R can be at least equal to a radius of the induction plate 122.

[0099] FIG. 4 shows the apparatus 100 configured with a container 110 with a flat shape, i.e., without any inner cavity, such as inner cavity 110-2 shown in FIG. 1 A. The container 110 can be removable such that when placed over the apparatus at a designated position, rim of the flat container 110 engages with engaging element 116 (not shown here) to move the projections 118 to a position that is in alignment with the apertures 120 on the lid 104, thereby allowing the lid 104 to move to the closed position by receiving the projections 118 within themselves. This ensures that the lid 104 cannot be closed unless the container 110 is placed on the apparatus 100, thereby ensuring safety of operation of the microwave generating device coupled with the lid 104. As can be understood, the flat plate shape container 110 of FIG. 4 can be useful in certain cooking applications, such as preparing patties for burgers.

[0100] Those skilled in the art would appreciate that the invention (cooking apparatus) overcomes the drawback of conventional apparatuses by ensuring proper engagement between the lid and the containers, and effectively and safely securing the lid on the container such that the container remains aligned to the lid irrespective of the movement of the lid and without any gaps. Moreover, the cooking apparatus also keeps the container at a safer distance from the base or induction heater present in the base of the apparatus, thereby restricting the dissipation of the heat from the heated container back to the base, thus, making the apparatus efficient and preventing other components from damage from the dissipated heat.

[0101] The proposed cooking apparatus allows traditional cooking steps that take place in open flame / induction and also gives the user an option to switch over to microwave cooking to complete the cooking. In particular, the disclosed cooking apparatus overcomes the drawback of conventional apparatuses by ensuring proper engagement between the lid and the containers, and effectively and safely securing the lid on the container such that the container remains aligned to the lid irrespective of the movement of the lid and without any gaps. The disclosed cooking apparatus also keeps the container at a safer distance from the base or induction heater present in the base of the apparatus, thereby restricting the transfer of the heatfrom the heated container back to the base, thus, making the apparatus efficient by allowing the induction plate to remain on continuously for cooking operations needing high temperature.

[0102] While the foregoing describes various embodiments of the invention, other and further embodiments of the invention may be devised without departing from the basic scope thereof. The scope of the invention is determined by the claims that follow. The invention is not limited to the described embodiments, versions or examples, which are included to enable a person having ordinary skill in the art to make and use the invention when combined with information and knowledge available to the person having ordinary skill in the art.ADVANTAGES OF THE INVENTION

[0103] The present invention provides an improved cooking apparatus that overcomes the drawback of conventional apparatuses for multiple modes of heating and preparations.

[0104] The present invention provides a cooking apparatus that allows achieving high temperature while using an induction plate, thereby allowing cooking operations needing high temperature, such as stir frying.

[0105] The present invention provides a cooking apparatus that restricts the transfer of heat from the heated container back to the induction heater present in the base of the apparatus, thereby allowing the induction plate to remain on continuously.

[0106] The present invention provides a cooking apparatus that keeps the container at a safe distance from the induction plate to prevent overheating of the induction plate, and thereby increasing the efficiency of the induction plate.

[0107] The present invention provides a cooking apparatus that allows cooking of a range of quantities without any difficulty.

[0108] The present invention provides a micro wave -based cooking apparatus that meets the prevailing certification requirements related to the safety of operation.

Claims

We Claim:

1. A cooking apparatus comprising:a base having a lower heating module and an upper support surface associated with the lower heating module;a support structure carried by the base;and a cooking container supported by the support structure such that a gap between a bottom of the cooking container and the upper support surface is maintained within a predefined gap range during cooking, whereby conductive heat transfer from the cooking container toward the lower heating module is reduced so as to permit sustained higher-temperature cooking.

2. The cooking apparatus as claimed in claim 1, wherein the cooking container comprises a substantially flat bottom arranged to remain within the predefined gap range above the upper support surface..

3. The cooking apparatus as claimed in claim 1, wherein the cooking container comprises a curved or concave bottom such that a first gap value at a central region of the bottom is smaller than a second gap value at a radially outward region of the bottom while both of the first gap value and the second gap value remain within the predefined gap range.

4. The cooking apparatus as claimed in claim 3, wherein the curved or concave bottom is configured to retain cooking oil and / or food in a central cooking region5. The cooking apparatus as claimed in claim 3, wherein each of the second gap value and the second gap value is within the predefined gap range.

6. The cooking apparatus as claimed in claim 3, wherein the predefind radius is at least equal to a radius of the induction plate.

7. The cooking apparatus as claimed in claim 1, further comprising a lid movable to a closed position over the cooking container, the lid carrying at least one microwavegenerating device so that the cooking container can optionally be subjected to microwave heating in addition to heating from the lower heating module.

8. The cooking apparatus as claimed in claim 1, wherein the support structure is pivotally mounted relative to the base for movement between a loading position and a cooking position.

9. The cooking apparatus as claimed in claim 1, wherein the support structure comprises a leg at a free end thereof for supporting the support structure in the cooking position.

10. The cooking apparatus as claimed in claim 9, wherein the leg comprises a foot portion configured to rest on a support surface and / or to snap-fit to a portion of the base in the cooking position.

11. A cooking apparatus comprising:a base;a container;a grill pivotally configured to support the container; anda lid pivotally configured with the base for movement between an open position and a closed position, wherein in the closed position, the lid sits on the grill and creates an enclosed space between the container and the lid;a microwave generating device coupled to the lid to generate microwaves when the lid is in the closed position and heat contents of the container using the generated microwaves;wherein the grill comprises a locking mechanism configured to prevent the lid from moving to the closed position when there is no container placed over the grill.

12. The cooking apparatus as claimed in claim 11, wherein the locking mechanism comprises an engaging element slidably configured with the grill biased to a position in which the engaging element prevents the lid from moving to the closed position.

13. The cooking apparatus as claimed in claim 12, wherein the engaging element is slidably configured with the grill for movement in a radial direction between an inward position and an outward position, and is biased to the inward psotion to prevent the lid from moving to the closed position, and wherein the engaging element is configured to all movement of the lid to the closed position, when the engaging element is the outward position.

14. The cooking apparatus as claimed in claim 13, wherein the engaging element is configured such that when the container is placed over the grill, the engagement of the container with the engaging element results in the engaing element moving to the outward position and allow movement of the lid to the closed position.

15. The cooking apparatus as claimed in claim 13, wherein the engaging element comprises at least one projection that projects upward from an upper surface of the grill, and the lid comprises at least one aperture configured such that, when the engaging element is in the inward position, the at least one projection is out of alignment with the at leastone aperture to prevent movement of the lid to the closed position, and when the engaging element is in the outward position, the at least one projection is in alignment with the at least one aperture to allow movement of the lid to the closed position.

16. The cooking apparatus as claimed in claim 12, wherein the base comprises a heat source to provide heat to the container from below in combination with heating of contents of the container by the micro wave generating device.

17. The cooking apparatus as claimed in claim 16, wherein the heat source is an induction plate, and wherein the grill is configured to support the container such that a bottom of the container remains at a predefined height above the induction plate.

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