1. Field of the Disclosure
The present disclosure relates to devices for rapidly grilling or charbroiling food products. More particularly, the present disclosure relates to such grilling devices that orient and cook the food products in a vertical direction.
2. Description of the Related Art
There is a continuing need to improve the efficiency of cooking grills in retail food establishments, and to improve the quality and consistency of the food products produced by the same. Current devices require a lot of manual maintenance, cleaning, and operation, which greatly slows output down. The present disclosure addresses these concerns.
Some current devices attempt to cook food products in a vertical direction. In the device shown in U.S. Pat. No. 8,109,205, to Winer et al., a user manually places a food product in a grilling case, and then manually places the cage inside a box where the food product is cooked. This is undesirable because it is very inefficient. It requires a significant amount of manual labor, which in turn reduces production. U.S. Pat. No. 5,499,574, to Esposito, and European Patent Application No. EP 0 069 187, to Arrigo, are each similarly limited in that the food product must be manually loaded into a cooking rack, and then further manually loaded into a cooking area. In U.S. Pat. No. 6,109,169, to Masel et al., a food product is placed between two vertical platens and cooked. A user has to manually activate the device by throwing a lever to move the platens together. Again, this is inefficient because of the manual labor required. The device of Masel is also unnecessarily cumbersome and unwieldy, because of the mechanism required to drive the plates toward one another. The device of Masel is further limited in that only grill plates may be used, which limits the types of cooking that can take place, and eliminates the ability to place char or grill marks on the food product.
Accordingly, there is a need for a grill that addresses these deficiencies.
The present disclosure provides a grill where a food product is introduced to the grill and cooked in a substantially vertical orientation. This allows for simultaneous cooking of both sides of the food product, significantly reducing cooking time. Since the food product is substantially vertical and cooked by heaters or burners that are also substantially vertically aligned, as the food moves between the heaters in the cooking zone any food or grease drippings run off the food and into an unheated area below the food zone. There, it is collected in a bin or trough, and does not contact the burners. This eliminates a significant amount of maintenance and the need to cover or protect the burners.
Thus, in one embodiment, the present disclosure provides a grill comprising a housing, two opposing rotating food transporting belts, chains, or the like, so that there is a gap between the belts, and two heating elements, one associated with each of the belts, wherein the belts and the heating elements are within the housing. The grill further comprises an entry port on one side of the housing, an exit port on an opposite side of the housing, and a chute (or other food dispensing device) in communication with the entry port. A food product is introduced to the housing via the chute and the entry port. The belts grip and move the food product along a longitudinal axis of the housing in the gap. The food product is heated by the heating elements, and transported out through the exit port. The belts are aligned so that the food product is in a substantially vertical orientation within the housing. The belts sear the food product with at least one of a grill mark, a monogram, text, a symbol, and a brand on at least one side of the food product.
The present disclosure also provides a method of cooking a food product, comprising aligning the food product in a substantially vertical orientation, passing the food product between a pair of opposing heaters, so that each side of the food product is cooked simultaneously, and moving the food product to a collection area after it passes between the pair of heaters.
Referring to
Food products 2 of the present disclosure can be aligned in a perfectly vertical orientation, i.e. one where product 2 is perpendicular to the horizontal plane. Food products 2 can also “substantially” vertical, i.e. oriented slightly off perpendicular. The present disclosure contemplates that food products 2 can be oriented anywhere from parallel to the horizontal plane to perpendicular thereto, or any sub ranges there between.
Three-dimensional food products will typically have three axes along which they can be measured, namely a length, width, and thickness or depth. In some food products, the length and width will be approximately the same, such as with circular or square hamburger patties. Other food products will have a generally rectangular solid shape, where the length and width across one side of the food product are both larger than its thickness, for example a chicken cutlet. By “vertical orientation”, the present disclosure means that one of the larger two dimensions, namely the length or width of the food product, is in a substantially vertical orientation. For example, when the food product is a circular hamburger patty, the length and width will be approximately equal, and will correspond to the dimension across the diameter of the face of the patty. As shown in the accompanying Figures, this length or width is in a substantially vertical orientation.
The present disclosure contemplates that the food product can be perfectly vertical, i.e. perpendicular to the horizontal plane. The food product can also be an angle to the vertical axis, for example from zero up to forty-five degrees from vertical, or any subranges therebetween. The food product can also be from zero up to ninety degrees from vertical, or any subranges therebetween, wherein ninety degrees from the vertical is horizontal. In embodiments where a chute is used to introduce the food product, as discussed in greater detail below, the chute can be in a substantially vertical orientation, so that the food product is also aligned vertically when in the chute. “Substantially” vertical means either perfectly vertical, or slightly off toward the horizontal.
Grill 1 provides several advantages not provided for by current devices. Since food product 2 is in a substantially vertical direction while being cooked, any grease or food drippings fall off toward the bottom of grill 1. This prevents grease or food drippings from hitting heating elements 30, which are also in a substantially vertical orientation, and also eliminates the need to protect heating elements with covers, as is done in current devices. Multiple food products 2 can be stacked in chute 5 for cooking, allowing the user to perform other tasks while cooking is taking place. The vertical cooking orientation of grill 1 also allows for a small, portable, table-top footprint (
As discussed in greater detail below, belts 20 can be made of any one of the following materials: heavy gauge wire, porous or non-porous metal or ceramic mesh, non-porous metal or ceramic plates, or perforated metal or ceramic sheets. Some of these materials will create grill marks on food product 2, which can be desirable from a consumer or owner standpoint. As both sides of product 2 are cooked and marked simultaneously, there is no need to flip food products 2. This provides grill marks on both sides of product 2 where applicable, and also significantly reduces the cooking time. Some current devices do not have any provision for flipping food products, meaning that the cooked products only have marks on one side. Belts 20 can also be heated to a point at which they become self-cleaning, eliminating a significant amount of maintenance required for grill 1. These are all significant advantages of grill 1 as compared to currently available devices.
Referring again to the Figures, and in particular
In the shown embodiment, belts 20 are shown as having an open configuration, with wires 22 separated by gaps. This serves at least two advantageous functions. First, belts 20 and wires 22 apply distinctive char marks to food product 2, which is desirable for consumers and retailers alike. The open configuration of belts 20 also facilitates the transfer of heat and infrared energy to food product 2. In addition, when belts 20 only make one pass by heaters 30 (as shown in
Belts 20 can also be designed to have a brand or monogramming portion built in, so that they impart text, a logo, or other characters on to food product 2. For example, belts 20 can have words, symbols or text, an initial monogram, or a company logo thereon, so that cooked food product 2 bears that text, monogram, or logo. This monogramming portion can be part of the material of belts 20, or integrated into the design of belts 20. For example, the monogramming portion can be made of the same material that forms wires 22. The monogramming portion can be made in sections that would enable the monogramming or branding portion of belt 20 to bend around the curved part of the pathway of belt 20, but would be relatively solid or single-piece appearing while traveling along the straight portion of the pathway, so that during the cooking process the monogram or brand is seared onto one or more surfaces of the cooked food product.
Also, by continuously rotating around heating elements 30 within heating section 10, belts 20 are maintained at a high temperature. Thus, when food product 2 is picked up by belts 20, each of wires 22 makes a sear or char mark on the surface of food product 2. Char marks are a desirable feature in the food retail industry and for consumers. The temperature of belts 20 can be set to any appropriate cooking temperature for cooking the food in the middle cooking zone. When belts 20 return back to a cooking starting point, they pass close to heating elements 30, which heat belts 20 to sufficiently pyrolytic temperature, cleaning off any residual material left on the belts during cooking. In one embodiment, the temperature of belts 20 is from seven hundred to eight hundred degrees Fahrenheit, or any subranges therebetween. This is a suitable range for ensuring prompt cooking of food product 2 and applying sufficient char marks to the same during the amount of time product 2 is within heating section 10. Again, due to the fact that belts 20 are maintained at these high temperatures, they can be self-cleaning of any food or grease particulates that adhere thereto during the cooking process. This is another advantageous feature of grill 1.
Heating or cooking food product 2 on two sides simultaneously greatly reduces the time needed for cooking. In traditional devices, where only one side of the product is cooked at a time, the cooking times can be several minutes, for example 3-4 minutes. With grill 1, the cooking time can be reduced to sixty to ninety seconds, or any subranges therebetween, required to cook the particular food product. Cooking times with grill 1 can be half or less than those of conventional cooking methods.
Referring specifically to
Belts 20 can be held in place by and rotate around a plurality or gear towers 24. In the shown embodiment, the gap- or width-adjusting mechanism described above includes idler rollers 44 that are mechanically or manually placed at a desired location to produce a desired gap between belts 20. In one embodiment, as shown, there is a pair of idler rollers 44 for each of belts 20. Spring tensing assemblies 40 and springs 42 maintain the belt tension by keeping belts 20 from sagging. One or more belt backing bars 45 can hold belts 20 at the desired gap throughout the cooking zone within heating section 10, between an entry and exit port (discussed in greater detail below) for food product 2. Other methods may be used to control and maintain the compression placed on food product 2 while it is cooked within grill 1.
The spacing of belts 20 can also be automated so that a control system, product recognition program, sensors, or set of controls detects or sets the appropriate gap itself. A user can also set the desired gap through controls on grill 1, or by selecting a certain food type. Belts 20 can also have a fixed gap, or an auto-adjusting spring loaded gap. In the latter, the thickness of food product 2 controls the gap width, as a spring tensioned pressure will lightly press the belt onto the food as it passes through the unit.
Advantageously, grill 1 allows significant flexibility in types of food product 2 that can be cooked, as well as whether food product 2 is frozen or at room temperature when initially delivered from chute 5. When food product 2 is delivered into chute 5, it may initially stick to belts 20, but as it goes through the cooking process, it will release. Food product 2 will still have enough structural integrity so that it does not fall apart when deposited collection area 90 after cooking is complete.
As food product 2 is cooked, it may shrink in thickness. Grill 1 can taper the distance or gap between belts 20 so that it is smaller at the end of heating section 10 opposite chute 5 (or vice versa), which allows belts 20 to maintain a tighter grip on product 2. In addition, as shown in
Referring to
Belts 20 and any accompanying width-adjusting mechanisms (such as rollers 44 discussed below) can be removably connected to base 16 of grill 1, for ease of cleaning and maintenance. Belts 20 and the width-adjusting mechanisms can also be part of a cassette or assembly that is removably connected to base 16, so that belts 20 and the width-adjusting mechanisms are removed at once. An example of such an assembly is shown in
Heating elements 30 can be any suitable type or design of heater that can apply heat to product 2 as it passes in front of them. In one embodiment, heating elements 30 are forced draft combustion burners. These burners can be particularly suitable, because the forced air directs flames and combustion gases directly toward food product 2. This effect gives distinctive char marks to food product 2, heats food product 2 with a combination of convection and infrared heating, and decreases the cooking time. The present disclosure also contemplates that heating elements 30 can be ambient combustion burners, i.e. those burners that do not use blowers or forced drafts. Heating elements 30 can also be electric or any type of infrared burners, such as ceramic infrared burners. The heating surface of heating elements 30 can be a metal or ceramic mesh, or steel wool. This heating surface can be heated by combustion gases or other type of heat from elements 30, and then transfer heat to product 2. Heating elements 30 can have an output of from three thousand to fifty thousand British thermal units (BTU)/hr, or any subranges therebetween. In one embodiment, heating elements 30 have a variable heat input that can be adjusted to accommodate different food and different belt speeds.
Belts 20, heating elements 30, and spring mechanism 40 can all be within housing 12 of heating section 10. Housing 12 envelops each of these components and protects them from environmental conditions. Housing 12 also protects a user from direct contact with the hot surfaces of belts 20 or heating elements 30. Housing 12 can have two ports or slots 13 on either side thereof, one at the end of chute 5, and the other at the opposite end adjacent to collection area 90. As discussed above, food product 2 is introduced into heating section through the first of slots 13, via chute 5, and exits through the slot 13 on the other side of housing 12. Having each of belts 20, heating elements 30, and the spring mechanism all within housing 12 provides a convenient, counter-top unit of grill 1, as shown in
Housing 12 can have a vent 14 on a top surface thereof. Vent 14 may be over a hole (not shown) in housing 12, so that heated air and grease vapors may be expelled through vent 14. Vent 14 may also contain catalysts (not shown) to absorb smoke, grease, and other vaporized exhaust from within housing 12. The catalysts used must be suitable for use at high temperatures, and for removing smoke and cooking particulates.
Housing 12 can also have a base 16, where controls and power equipment for belts 20, heating elements 30, and other components of grill 1 can be stored. On the top of base 16 is groove 17 (
As shown in
Food products 2 can be introduced to heating section manually by stacking them in chute 5. Grill 1 can also be operated by interfacing it with one or more of the following: an automated mechanism to feed products 2 to grill 1, a collection apparatus for collecting cooked products 2, a station for assembling and/or dispensing a fully assembled retail product using cooked food product 2 (e.g., a hamburger with a bun and toppings made with a hamburger patty cooked by grill 1), and a point of sale (POS) system to allow a customer or operator select the type of food product that is cooked and prepared. Thus, in one embodiment, when grill 1 is used in a retail food establishment, a customer can place an order at the POS station for a particular type of food product 2. A control system (not shown) can receive the order from the POS system, and control a feeding mechanism to send the appropriate product 2 to chute 5. After product 2 has been cooked in grill 1, the product can be conveyed automatically with a collection apparatus to a station (not shown) for further assembly into the final product. In this fashion, grill 1 could be integrated into a fully automated product assembly system. Grill 1 may also be used in conjunction with an automated feeder and/or a collection apparatus alone.
While the present disclosure has been described with reference to one or more particular embodiments, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the scope thereof. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the disclosure without departing from the scope thereof. Therefore, it is intended that the disclosure not be limited to the particular embodiment(s) disclosed as the best mode contemplated for carrying out this disclosure.
The present application claims priority to U.S. Provisional Patent Application No. 61/896,503, filed on Oct. 28, 2013, which is herein incorporated by reference.
Number | Date | Country | |
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61896503 | Oct 2013 | US |