Applicant claims priority under 35 U.S.C. ยง 119 of European Application No. 18191930.9 filed Aug. 31, 2018, the disclosure of which is incorporated by reference.
The invention pertains to an electric grill with two grill plates, which lie opposite of one another with respect to their large plate surfaces and jointly define a grilling space, wherein the grill comprises a first grill plate for supporting grillables and a second grill plate that can be displaced relative to the first grill plate, wherein a plate base that holds the grill plate is assigned to each grill plate, and wherein at least one grill plate comprises at least one plate segment, which is displaceably held on the plate base and can be automatically displaced relative to the plate base holding this plate segment depending on a size and/or shape of a grillable introduced into the grilling space.
Electric grills of the aforementioned type are known from the prior art. These grills are frequently also referred to as contact grills because the grillables are contacted and cooked by the grill plates on two opposite sides. In most cases, one of the two grill plates, preferably the upper grill plate in a normal operating state, can be displaced relative to the other grill plate, for example, analogous to sandwich toasters, waffle irons or the like.
U.S. Pat. No. 3,746,837 discloses a heating device for foods with two opposite grill plates, which respectively comprise a plate segment that can be displaced relative to the associated plate base. The respective grill plate therefore consists of a single plate segment.
For example, U.S. Design Pat. No. D697,360 discloses an electric grill with two opposite grill plates, which are respectively held by a plate base. The two plate bases can be displaced relative to one another by means of a hinge.
Grills of this type have the disadvantage that the use of grillables with different heights within the grilling space leads to a different cooking result, for example such that a first grillable already is thoroughly cooked while a second grillable is only partially cooked. If the upper grill plate is pressed on with excessive force, for example, in order to compensate a height difference between multiple grillables to be cooked simultaneously, a deformation of the respective taller grillable can occur and likewise affect the cooking result. In addition, this force of pressure can cause the grillables to stick on the grill plates.
Based on the aforementioned prior art, the invention aims to develop an electric grill, in which individual grillables, as well as grillables with different thicknesses, can be optimally grilled.
In order to attain the above-defined objective, the invention proposes that the grill plate comprises multiple plate segments that can be displaced relative to one another and relative to the respectively associated plate base.
This inventive design is particularly advantageous because multiple regions of a grill plate can be adapted to the thickness of a grillable lying on the grill. It is therefore also possible, for example, to optimally prepare more than two grillables with different heights in the electric grill, wherein each plate segment can be adjusted to an optimal plate height automatically and independently of adjacent plate segments such that the opposite plate segments optimally rest against the grillable lying in between. The resulting function corresponds to the function of a 3D pin board with a plurality of segments that recede when a force is applied thereto. It basically suffices if only one of the grill plates comprises such displaceable plate segments. However, it is also possible that both opposite grill plates comprise displaceable plate segments. According to an embodiment, only the upper grill plate of the electric grill may be realized in a segmented manner such that the height of the grilling space, i.e. the internal opening height, can be varied over part of the surface or the entire surface. The lower grill plate may likewise be realized in a segmented manner, but this is not absolutely necessary as already mentioned above. In a closed state of the grilling space, the opposite plate segments preferably rest in a frame of the plate base such that the electric grill can also be opened with only a single hand movement if the grill plate is segmented.
The height of at least a portion of a grill plate can be adapted to the height of a grillable to be cooked. In this context, it is possible, for example, that one grill plate comprises a plate segment that is arranged stationary relative to the plate base and a plate segment that is displaceably held on the plate base. Furthermore, another grill plate, which is formed by a single plate segment, can be displaced relative to the plate base as a whole such that the height of the plate segment can be adapted in such a way that the grilling space is always optimally closed when a relatively thin grillable is placed on the grill plate and when a thicker grillable is placed on the grill plate. In an embodiment, in which a first plate segment can be displaced relative to a second plate segment, it is advantageously accomplished that multiple grillables located in the grilling space are held flush and preferably with a homogenously applied pressure of the grill plate.
The plate base may be realized in a cup-shaped manner, wherein the plate segment can be at least partially displaced into the plate base. The term cup-shaped refers to shapes, which define three-dimensional spaces that are open on one side. Due to this design, a portion of the grill plate can protrude into the plate base and another portion can optionally protrude over an opening plane of the grill plate base, namely in the direction of the respective opposite grill plate or plate base. The plate base preferably can serve for guiding one or more displaceable plate segments. It would also be possible, in particular, that an inner edge region of the plate base provides guides for the displacement motion of a plate segment. It would furthermore be possible that a plate segment or multiple plate segments protrude over an edge of the cup-shaped grill plate base in an open position of the grilling space and are displaced into the associated plate base due to the closing process, i.e. when the opposite plate bases are moved toward one another. This may either be caused by the contact between the opposite grill plates or between one or more plate segments and a grillable. The grilling space preferably is closed by the abutting grill plate bases and/or grill plates in such a way that liquids escaping from the grillables can be collected and purposefully drained off and that an optimal temperature for the cooking process can be provided.
It is furthermore proposed that a resetting element is assigned to the plate segment and elastically supports the plate segment on the plate base. For example, a spring element, which is tensioned by an applied force, may be assigned to each plate segment. When a grillable, which prevents a defined closed position of the grilling space or protrudes over the planes of other grillables, is located between the grill plates, for example, the plate segment is displaced against the restoring force of the spring element until the applied force decreases because the protrusion of the respective grillable is eliminated. The spring elements may be realized, for example, in the form of coil springs, leaf springs or similar spring elements. It is furthermore also possible to support the plate segment on a body consisting of an elastic material or to manufacture the plate segment itself of an elastic material. The elastic support of the plate segments, i.e. the application of a prestressing force on the plate segments, ensures that the plate segments are displaced back into a forward starting position when no force is any longer applied to the plate segments, i.e. when the grilling space is opened and/or when no grillable rests against the respective plate segment and/or when the grillables placed on the grill have identical thicknesses, such that the grill plates rest against the grillables in an identical horizontal plane when the grilling space is closed.
It would furthermore be possible that a plate segment of the second grill plate can be displaced relative to the associated plate base due to a gravitational force acting upon the plate segment. For example, the second grill plate, i.e. the upper grill plate, therefore may alternatively or additionally to a reset of the plate segments by a spring element also comprise plate segments, which are supported on the plate base in such a way that they drop down due to the gravitational force when the grill plate is essentially oriented horizontally, i.e. when the plate segments within the plate base point vertically downward. Based on an open position of the grilling space, a premature horizontal position of the upper grill plate can be achieved with a hinge solution between the two plate bases, in which the plate bases are not only connected to one another by means of a single hinge pin, but which rather comprises a lever with two different hinge pins such that the upper grill plate can be prematurely or constantly aligned parallel to the lower plate base regardless of a current position during a closing process. In comparison with a connection with only a single hinge pin, such a closing mechanism is also advantageous because the grillables located in the grilling space are not initially compressed on one side, i.e. from the side of the hinge. In fact, the pressure of the upper grill plate can be homogenously applied to the grillables.
It is proposed that a plate segment provides a contact surface for grillables, the surface area of which amounts to 1 mm2 to 1000 cm2, particularly 20 mm2 to 200 cm2. The grill plate may therefore comprise a plurality of needle-shaped plate segments, which lie adjacent to one another like in a pin board and press against the grillables. The grill plate may alternatively or additionally also comprise plate segments, which are suitable for accommodating grillables with a customary surface area, for example pieces of meat, vegetables and the like, completely and without cooperation of adjacent plate segments. Depending on the chosen size of the individual plate segment, the grill plate may be realized in such a way that it adapts itself to a surface contour of a grillable with a plurality of plate segments and the surface of the respective grill plate therefore can be optimally used for supporting grillables. The plate segments of a grill plate particularly may also have different sizes such that there may be surface regions with larger or smaller plate segments than other surface regions. Consequently, a portion of the grill plate can be used for supporting large grillables while other plate segments are advantageous for supporting comparatively smaller grillables. The indicated surface areas for the plate segments represent preferred values, wherein a value of 1 mm2 represents a customary surface area of needle points such that the contour of a grillable can be reproduced in a particularly precise manner. In contrast, the indicated surface areas of up to about 1000 cm2 represent larger portions of a grill plate, which are realized in the form of a single plate segment. In one example, the grill plate may also be displaceable relative to the associated plate base as a whole, i.e. in the form of a single plate segment. Depending on the size of the grillable lying on the grill, the grill plate preferably can be retracted into a cup-shaped plate base as a whole in order to make it possible to close the grilling space in a flush manner. Preferred surface areas of a plate segment lie between 20 mm2 and 200 cm2, wherein these values approximately correspond to the surface areas of customary grillables such as pieces of meat, pieces of vegetables or the like.
In this context, it would also be possible that a grill plate comprises one to one thousand plate segments. The grill plate particularly may comprise two to one hundred plate segments, preferably two to ten plate segments. Depending on the size of the electric grill and the number of plate segments per grill plate, this also leads to different surface areas of the plate segments. The number of plate segments and their size particularly have to be adapted to one another, wherein the above-described embodiments, in which different surface regions of a grill plate comprise different sizes and different numbers of plate segments, can be realized.
It would be possible that a grill plate comprises at least two plate segments, wherein a separate heating device is assigned to each of the two plate segments, and wherein the heating devices of the plate segments can be controlled independently of one another with respect to an operating state and/or a heating power and/or a heating time. Due to this design, the temperature of a plate segment can be adjusted individually and independently of the temperature of other plate segments. For example, a heating element that can be individually energized may be assigned to each plate segment or a group of multiple plate segments. In this way, different heating powers and/or different temperature profiles and therefore also different cooking points of different grillables can be taken into account. It is particularly preferred that the plate segments of the first grill plate, as well as the plate segments of the second grill plate, can be heated independently of one another. This concerns, for example, their operating state, i.e. for example a current on/off state, a heating power or a heating time allotted for a grillable with a certain thickness. The heating device of a plate segment can be manually controlled by a user, for example, in that certain surface regions of the grill plate are activated by the user while other surface regions, which are not required due to the quantity and size of the grillables, remain deactivated. Alternatively, a heating device may also be controlled in an automated manner, for example, by means of a contact sensor and/or a weighing device that respectively measure or estimate the presence and/or a weight and/or a volume and/or a size of the grillables.
In this context, it is proposed that a sensor for detecting a displacement or a state of displacement of the plate segment or for detecting the presence of grillables on a contact surface of the plate segment is assigned to a plate segment. In a simple example, the sensor may be realized in the form of a contact sensor that determines the presence of grillables on the respective plate segment upon detection of a contact. Furthermore, the sensor may also detect a displacement, i.e. a changing height of the plate segment relative to the plate base, a displacement motion, for example by means of an acceleration sensor, a changing resistance or the like.
It is furthermore particularly advantageous if the electric grill comprises a control device that is designed for controlling a heating device assigned to a plate segment in dependence on a detection result of the sensor. According to this embodiment, the control device activates the heating device, which is assigned to one or more currently required plate segments. Plate segments, on which no grillables are currently positioned, remain deactivated. This reduces the power consumption for the operation of the electric grill. In addition, the control device can also determine the height of grillables placed on the grill, for example, by determining a distance between opposite plate segments of the grilling space. In order to adjust a heating power or an anticipated heating time, the control device may furthermore take into account information on the type of a grillable, its cooking point or the like such that different grillables reach an optimal cooking point at the same time and therefore can be served simultaneously. A user can optionally transmit information on the type of grillable and/or its weight or the like to the control device. Furthermore, the control device may also control a heat-retaining function or a waiting mode, which is activated once cooking of a grillable is completed. For example, grillables can thereby be kept warm until other dishes are finished.
It is ultimately proposed that one of the grill plates protrudes over the other grill plate and/or plate base with an edge region in the closed state of the grilling space such that liquid present in the grilling space can drain off. It would be possible that the first grill plate, i.e. the lower grill plate, protrudes over the second, upper grill plate. The protruding grill plate serves for optimally draining off liquid from the grilling space. A gap between the grill plates is formed due to the protrusion of one of the grill plates. A collection container, into which the liquid is correspondingly transferred, may be assigned to this gap.
The invention is described in greater detail below with reference to exemplary embodiments. In the drawings:
The figures merely show examples of different potential embodiments of an inventive grill, wherein
The grill 1 illustrated in
The grill plates 3, 4 comprise multiple plate segments 9 to 16, wherein the lower grill plate 3 comprises four plate segments 9 to 12 and the upper grill plate 4 likewise comprises four plate segments 13 to 16. The plate segments 9 to 12 of the lower grill plate 3 are arranged stationary relative to the associated plate base 7 whereas the plate segments 13 to 16 of the upper grill plate 4 can be displaced relative to their plate base 8, namely into the plate base 8, wherein this corresponds, for example, to a displacement motion orthogonal to the plate plane of the plate base 8. The upper grill plate 4 can be displaced relative to the lower grill plate 3 in that a user takes hold of a handle 26 arranged on the upper grill plate 4 and displaces the upper grill plate 4 into a desired position.
Number | Date | Country | Kind |
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18191930.9 | Aug 2018 | EP | regional |