The present invention relates generally to cooking appliances for food, and more particularly to an air fryer for cooking food products in a manner that provides a taste, texture and appearance that is similar to what can be achieved by deep frying of those same food products.
Deep frying or deep fat frying is a common method of preparing foods, particular in the restaurant industry. Although large food items can be deep fried, such as fish fillets, multiple relatively small food items can also be deep fried, such as french fries, onion rings, and chicken strips. Such products can be prepared from frozen, refrigerated, room temperature, or partially cooked conditions, depending on the desired final food product.
One drawback to deep frying foods is the need to use large volumes of oil that must be maintained at relatively high temperatures to provide the desired cooking of the products. This hot oil requires special care by the handlers of the food products in order to prevent splashing or spilling of the oil during the cooking processes. In addition, the oil needs to be changed on a regular basis, which can be time-consuming and inconvenient. Although such oil changing is common in the restaurant industry, it can be particularly challenging for individual consumers who are using at-home deep fryers and do not have established procedures for cleaning and oil disposal.
In addition to the inconveniences of deep frying foods, many consumers are becoming more health conscious and therefore are minimizing or eliminating fried foods from their diets. However, some of these same consumers still desire the taste and texture of certain fried foods and are turning to the relatively new cooking process of air frying as a replacement cooking method to deep frying. Air frying eliminates a significant amount of oil and fat absorption into the food products, while maintaining many of the desirable qualities of fried foods.
Commercially available air fryers generally use a basket that must be aligned carefully within an enclosure so that a driving rod mates with its female counterpart. A flap or door on the side of the basket is then opened so that food can be loaded into the air fryer. Hot air is circulated around the food products, thereby cooking the food or “air frying” it. Depending on the product being cooked and the particular air fryer being used, it may be necessary for a portion of the fryer (e.g., the basket) to be periodically shaken to more evenly cook the food items. Once the cooking process is complete, the flap or door is opened and the food product is removed by hand or with a serving utensil, as there is typically not a convenient way to remove the basket from the enclosure without touching hot metal basket surfaces.
While the commercially available fryers may be adequate for certain food preparation processes, there is a desire in the industry to provide additional options for the air frying process to further improve the end food products and simplify the air frying process for the consumer.
In an aspect of this invention, an air frying system is provided that includes a housing defining an inner chamber, a food basket removably positionable within the inner chamber, the food basket comprising a shell with first and second ends, a first cap attached to the shell at the first end, and a second cap removably attached to the second end of the shell, and a handle assembly adjacent to the first cap at the first end of the shell. The handle assembly includes a tray having an outer periphery and at least one handle extending from the outer periphery of the tray, wherein at least one of the handles is positioned outside the inner chamber of the housing when the food basket is positioned within the inner chamber of the housing. In this way, the food basket can be inserted and removed from the inner chamber without touching hot surfaces that have been heated during the cooking process.
In another aspect of the invention, an air frying system is provided that comprises a housing defining an inner chamber, a food accessory system comprising at least one cooking component that is removably positionable within the inner chamber, the at least one cooking component comprising a first end plate spaced from and connected to a second end plate, and a handle assembly adjacent to the first end plate. The handle assembly includes a tray having an outer periphery and at least one handle extending from the outer periphery of the tray, wherein at least one of the handles is positioned outside the inner chamber of the housing when the food basket is positioned within the inner chamber of the housing. With this system, the cooking component can be any of a food basket system, a skewer system, or a rotisserie system, for example.
The present invention will be further explained with reference to the appended Figures, wherein like structure is referred to by like numerals throughout the several views, and wherein;
Referring now to the Figures, wherein the components are labeled with like numerals throughout the several Figures, and initially to
Housing 12 generally includes a shell with an inner cavity having a number of pieces to allow both for assembly of the housing and for access to certain portions of the housing. As illustrated, housing 12 includes a bottom or base portion 18 to which a top or moveable portion 20 is attached via a hinge 22. Top or moveable portion 20 includes a handle 24 that can optionally be provided for ease in opening and closing the air fryer. At least part of the top portion 20 can include a transparent or partially transparent window 16 to allow for viewing of the food product as it is cooking, although all or part of the top portion 20 can be opaque and/or translucent. It can be advantageous for the top portion 20 to be configured so that it remains in its open position without tipping the housing 12 during the loading and unloading of basket 14, and so that it locks or otherwise positively engages with the bottom portion 18 when it is closed. The top portion 20 does not necessarily need to be hinged relative to the bottom portion 18, however, but can instead be attached in a different manner and/or at a different edge of the housing 12.
In an embodiment of the invention, the housing is configured so that the bottom portion 18 can sit on a horizontal surface without tipping when the top portion 20 is in both its open and closed position. In this way, the accessories with uncooked food products can be easily loaded into the housing 12 and then removed from the housing 12 after cooking without difficulty, and the air fryer 10 can remain on a horizontal surface during the air frying operation.
When the top portion 20 is in its open position, an operator can access the inner area of the housing 12, such as to move the food basket 14 and/or other accessories into and out of the inner area of the housing 12. The top portion 20 includes a heater and fan (neither of which is visible) behind a vented area 25, which provides the desired heated air and directs it into the inner area of the housing 12 to cook the enclosed food. The heater may include any of a number of different types of devices that heat the air to a desired temperature for cooking. For one example, the heater may include one or more separate elements, including quartz tube heaters, wound mica heaters, halogen tube heaters, or other types of heaters (e.g., tubular heaters), such as those available under the trade name “Calrod”. In an exemplary embodiment, these heater elements are used to produce radiant heat within the housing 12.
A fan (e.g., a centrifugal fan) is positioned relative to the heater elements in a location in which it circulates the heated air through the housing 12. The fan directs air generally around the top and bottom of inner volume of the housing 12. In one embodiment, the heated air will be directed around the perimeter of the housing, after which it is drawn up through the food basket 14. Some of the air will then be recirculated within the housing 12 and any excess heated air can be vented or evacuated through a vented area 29. In this embodiment, the vented area 29 is located adjacent to the back or hinged area of the housing 12, but it could instead be at a different area of the housing 12. The speed of the fan is controllable to allow for adjustment of the movement of the heated air along its path. The speed of this fan can be directly or indirectly correlated to the amount of food in the food basket 14, if desired, in order to achieve a certain cooking of the food product. The air fryer 10 can be provided with automatic and/or manual settings to adjust these parameters.
Referring additionally to
End cap 34 includes a number of perforations 38 through which air and moisture can exit the basket 14 during the air frying operation. The perforations 38 may be positioned in a pattern or in a random arrangement, and the number and location of perforations 38 can be different from that shown. Each perforation 38 will generally be large enough to allow a desired amount of air and moisture to be evacuated from the basket 14, but will generally be small enough to prevent any of the food pieces to unintentionally exit the basket 14.
End cap 34 further includes a coupling 40 extending from its outer surface and positioned along an axis about which the basket 14 rotates, as will be described in further detail below relative to positioning of the basket 14 within the housing 12. Coupling 40 can be a hex member with flat sides, as shown, or can be a different shape or size for engagement with a mating structure.
The cylindrical shell 30 further includes a second end 50 opposite the first end 32. A plate 52 is attachable to the second end 50, which can be a flat or contoured surface to seal or close the second end of the shell 30 and provide a surface onto which food placed within the basket 14 will rest when the basket 14 is in the position shown in
Air fryer 10 further includes a handle assembly 60 that is attachable to the second end 50 of the shell 30. Handle assembly generally includes a tray 62 from which at least one handle 64 extends. In this embodiment, two of such handles 64 are provided, which extend from opposite sides of the tray 62. However, it is understood that more or less than two handles can be provided, and that they can be positioned at various locations around the outside edge of the tray 62. An intermediate bracket or spacer 66 can extend between the tray 62 and the handle 64, or the bracket or spacer 66 can instead be integrated into the handle 64. In any case, each handle 64 is spaced from the tray 62 so that it can fit into the housing 12 in accordance with the description below. In addition, each handle 62 can optionally include a projecting stop member 65 or different feature that can help to keep the user's hands positioned near the distal end of the handles 62.
Referring again to
Referring again to
The basket 14 of this embodiment and others described herein can instead have a different configuration than the cylindrical shape shown (e.g., a different shape and/or size) that still allows for rotation generally as described. The mesh of the basket can be relatively dense or loose, depending on the desired amount of access to hot air that is desired within the basket itself. The basket may instead be made of materials other than mesh, such as a solid material sheet with perforations, for example, or other materials.
Rotation of the food basket 14 about the axis 70 can be driven by a motor that includes a belt or a gearing system, for example. The motor is preferably adjustable by the operator to control the desired speed of rotation for the basket 14. The food basket 14 can alternatively or additionally be manually rotated to agitate the food contained in the basket.
Air fryer 110 generally includes a housing 112 that surrounds the internal components of the fryer, including skewer assembly 114 that may be driven by a motor (not visible in these figures) or by hand.
Housing 112 generally includes a shell with an inner cavity having a number of pieces to allow both for assembly of the housing and for access to certain portions of the housing. As illustrated, housing 112 includes a bottom or base portion 118 to which a top or moveable portion 120 is attached via a hinge 122. Top or moveable portion 120 includes a handle 124 that can optionally be provided for ease in opening and closing the air fryer. At least a portion of the top portion 120 can include a transparent or partially transparent window 116 to allow for viewing of the food product as it is cooking, although all or portions of the top portion 120 can be opaque and/or translucent. It can be advantageous for the top portion 120 to be configured so that it remains in its open position during the loading and unloading of skewer system 114 without causing the air fryer 110 to tip, and so that it locks or otherwise positively engages with the bottom portion 118 when it is closed. The top portion 120 does not necessarily need to be hinged relative to the bottom portion 118, however, but can instead be attached in a different manner and/or at a different edge of the housing 112.
When the top portion 120 is in its open position, an operator can access the inner area of the housing 112, such as to move the skewer system 114 and/or other accessories into and out of the inner area of the housing 112. The top portion 120 includes a heater and fan (neither of which is visible) behind a vented area 125, which provides the desired heated air and directs it into the inner area of the housing 112 to cook the enclosed food.
A fan (e.g., a centrifugal fan) is provided generally adjacent to the heater elements to circulate the heated air through the housing 112. The fan directs air generally around the top and bottom of inner volume of the housing 112. In one embodiment, the heated air will be directed around the perimeter of the housing, after which it is drawn up and around the skewer assembly 114. Some of the air will continue to be recirculated within the housing 112 and any excess heated air can be vented or evacuated through a vented area 129. In this embodiment, the vented area 129 is located adjacent to the back or hinged area of the housing 112, but it could instead be at a different area of the housing 112. The speed of the fan is controllable to allow for adjustment of the movement of the heated air along its path. The speed of this fan can be directly or indirectly correlated to the amount of food and skewers on the skewer assembly 114, if desired, in order to achieve a certain cooking of the food product. The air fryer 110 can be provided with automatic and/or manual settings to adjust these parameters.
Referring additionally to
In the exemplary embodiment illustrated most clearly in
One skewer rod 160 is illustrated as being mounted in the skewer assembly 114, but it is understood that multiple skewer rods 160 can be mounted in the skewer assembly 114. In the illustrated embodiment, between one and ten skewer rods 160 can be mounted in the skewer assembly 114. In order to mount each skewer rod 160 in the skewer assembly 114, distal end 164 of skewer rod 160 is moved toward the second plate 142 while keeping the remainder of the skewer rod 160 aligned with one of the notches 146 of the first plate 140. As distal tip 170 is pushed into one of the holes 150 in second plate 142, the end 167 of hook-shaped member 166 will similarly be pushed into one of the holes 148 in first plate 140. In an embodiment, the arched portion or detent 168 will engage or “click” with the hole 148 in order to more securely attach the proximal end 162 of the skewer rod 160 to the first plate 140. Because each notch 146 is associated with one of the holes 148, the skewer rod 160 will be resting in one of the notches 146 when the detent 168 is engaged with one of the holes 148 in the first plate 140 and the distal tip 170 has been pushed at least partially through one of the holes 150 in second plate 142.
The skewer rods used with skewer assemblies of the invention can be configured differently than illustrated herein, however, wherein any of such embodiments can include end plates with corresponding different structures to engage with a skewer rod and lock it securely in place. It is desirable that the engagement of skewer rods with end plates or other structures is relatively easy to do for skewer removal once the air frying operation is complete.
Shaft 144 of skewer assembly 114 is shown as extending through a central opening in each of the end plates 140, 142, and further includes a securing bracket 180 at both ends to keep the shaft 144 secured to the end plates 140, 142. Ends of the shaft 144 are configured for engagement within the housing 112 after the desired number of skewer rods 160 are secured to the end plates 140, 142. The entire skewer assembly 114 can rotate within the housing 112, such as with a motor, or can stay stationery within the housing 112 during the air frying process.
Rotisserie assembly 214 generally includes a first fork member 240 spaced from a second fork member 242, and an elongated shaft 244 extending between the fork members 240, 242. A relatively large food product can be penetrated at opposite ends by the first and second fork members 240, 242 to hold it in place relative to the shaft 244 that will run through a length or width of the food product. Ends of the shaft 244 are configured for engagement within the housing 212 so that the entire rotisserie assembly 214 can rotate within the housing 212, such as by engagement with a motor, or can stay stationery within the housing 212 during the air frying process.
Air fryer 310 further includes a handle assembly 360 that is attachable to the second end 350 of the shell 330. Handle assembly generally includes a tray 362 from which at least one handle 364 extends. In this embodiment, two of such handles 364 are provided, which extend from opposite sides of the tray 362. An intermediate bracket or spacer 366 can extend between the tray 362 and the handle 364, or the bracket or spacer 366 can instead be integrated into the handle 364. In any case, each handle 364 will generally be spaced from the tray 362 so that it can fit into a corresponding housing with the handles remaining outside of the cooking chamber during the air frying operation.
In order to easily remove the shell 330 from the handle assembly 360, a push-button release member 370 is provided on the outer surface of the tray 362. Release member 370 can be pressed to disengage a connecting mechanism of the tray 362 from an outer surface of the second end 350 of the shell, then can be pushed back toward the tray 362 for reengagement of the connection between the two components.
This embodiment further includes an end plate 410 that will typically be a vertically positioned surface within a housing in which the food basket 400 is inserted. End plate 410 includes a U-shaped channel 412 that is configured so that the open end 402 of food basket 400 can be inserted and removed by sliding the basket 400 into the channel 412, thereby providing a top surface to close the basket 400. The U-shaped channel 412 includes a gear 414 that is positioned for engagement with the geared surface 406 of food basket 400 when the basket is rotated to be horizontal (as in
Air fryers of the invention can additionally incorporate steam into the air fryer housings. In particular, air fryers described herein can additionally have the ability to add steam to food products before, after, and/or during the process of cooking the food. In particular, the air fryer systems and methods provide for steam cooking and air frying in a single device or air frying unit. For an example, steam can be used in an initial step of cooking a food product, and then the steam can be evacuated or allowed to exit the device, such as through vents in the back of the air fryer housing. The air frying step can then take place to “crisp” or otherwise air fry the food products. However, these steps can instead be performed in a different order and/or one or more steps can be repeated, if desired. The amount of steam provided to the food products can be controlled and monitored, depending on the food being cooked and the desired qualities desired for the end food product. The timing of steam introduction to the system can also be controlled and monitored.
Although certain features are described generally herein relative to particular embodiments of the invention, it is understood that the features are interchangeable between embodiments to arrive at a single air frying system that includes features of different illustrated embodiments. It is further understood that the assembly and cooking steps described above can instead be performed in a different order and/or the steps can be repeated, if desired. The amount of heated air provided to the food products can be controlled and monitored to provide varying cooking results, depending on the food being cooked and the desired qualities desired for the end food product. The timing of when the heat is introduced within the system can also be controlled and monitored.
The present invention has now been described with reference to several embodiments thereof. The entire disclosure of any patent or patent application identified herein is hereby incorporated by reference. The foregoing detailed description and examples have been given for clarity of understanding only. No unnecessary limitations are to be understood therefrom. It will be apparent to those skilled in the art that many changes can be made in the embodiments described without departing from the scope of the invention. Thus, the scope of the present invention should not be limited to the structures described herein, but only by the structures described by the language of the claims and the equivalents of those structures.
This application claims priority to and the benefit of U.S. Provisional Patent Application No. 62/370,026, filed Aug. 2, 2016, the entire contents of which is incorporated herein by reference in its entirety.
Number | Date | Country | |
---|---|---|---|
62370026 | Aug 2016 | US |