US 4,947,741 AGrant
Automatic Food Cooking Machine
Issue Date:1990-08-14
•4 Claims
•3 Drawing Sheets
Abstract
An automatic food cooker machine having a plurality of food product carriers attached to an endless conveyor. The food carriers are attached and detached from the conveyor at opposite ends of the cooker. A plate having side rails is provided between the heat source and conveyor to catch grease and other debris falling from the food products. A pair of vents are formed at each end between the cooker doors and top wall to provide a safe escape for steam and promote the proper ignition of the flammable gas exiting the gas burner ports. A pair of dip tanks are positioned at each end of the conveyor so that as the food product is pulled through the cooker it is immersed in a flavored sauce.
Metadata
Assignee
- Nelgo Manufacturing, Inc.
Inventor
- Dean Gongwer
Application Information
Application Number:US 3437949
Filing Date:1989-04-27
Priority Date:1989-04-27
Art Unit:242
Classifications
IPC:
A47J 3704
Field of Search:
99443 C;404;407;444;345;346;375;386;389;402;427;443 R;448;400;408
Patent Drawings (3 sheets)
Description
Background of the Invention
This invention relates to an automatic food cooking machine.
Heretofore, automatic food cooking machines which use a continuous conveyor system for carrying food products, load and unload the food products from the same end. Such food cookers are disclosed in U.S. Pat. Nos. 3,499,380; 2,790,380; and 4,103,606. Such cookers are unacceptable to the U.S Department of Agriculture (USDA) for cooking food for mass human consumption. The USDA requires that such food be loaded and removed in separate locations by separate personnel. Further, USDA regulations require the food product be protected from direct exposure to the heat source.
A variety of food cookers have been patented in which the food product is loaded at one end and removed at an opposite or remote end. Such cookers are illustrated in U.S. Pat. Nos. 2,238,304; 3,721,178; and 4,188,868. Each of these patents disclose a cooking machine wherein the food is placed on a conveyor, passed over or through a heating element and deposited in an end container. The problem associated with this type of cooker is that the food product makes only one pass over the heat source before exiting the machine. This is unacceptable for the proper preparation of poultry or other meats requiring a longer cooking time.
Summary of the Invention
The automatic food cooker of this invention eliminates the problems discussed above by providing a cooker which provides access doors located at both ends of a cooker and which has a continuous food product conveyor. The conveyor is oriented such that food product carriers may be attached to the conveyor at one end of the cooker and removed at the other end of the cooker after several rotations of the conveyor within the cooker to assure the food product is properly prepared.
A metal plate extends between the heat source and the conveyor which carries the food product. The plate is angled slightly from front to back so as to cause any drippings from the food product to flow to a collection point at one end of the plate. Vent openings are formed in the top of the cooker housing near the cooker doors to allow air to flow into the interior of the cooker and insure proper functioning of the heating elements. By locating the vents near the cooker doors, steam and heat generated within the cooker during operation is vented safely away from the user's body when the doors are opened.
To flavor the food product, a tank containing a basting sauce is positioned near each end of the cooker under the conveyor. The conveyor is arranged so that its carriers enclosed food product are immersed into each tank with every conveyor rotation. The use of two basting tanks enhances the flavor of the food product and also prevents the food product skin from sticking to the carriers.
Accordingly, it is an object of this invention to provide for a novel automatic food cooker in which the food product is loaded and unloaded at separate ends of the cooker.
Another object of this invention is to provide for a automatic food cooker having vents formed over the cooker doors to provide safe ventilation for the heat and steam within the cooker.
Other objects of this invention will become apparent upon a reading of the following description taken with the accompanying drawings.
Brief Description of the Drawings
FIG. 1 is a perspective view of the food cooker of this invention.
FIG. 2 is a fragmented perspective view of the unloading end of the cooker.
FIG. 3 is a sectional view taken along line 3--3 of FIG. 1.
FIG. 4 is a cross-sectional view taken along line 4--4 of FIG. 8.
FIG. 5 is a fragmented cross-sectional view taken along line 5-5 of FIG. 8.
FIG. 6 is a fragmented perspective view of the loading end of the cooker with the doors closed.
FIG. 7 is a fragmented perspective view of the unloading end of the cooker with the doors closed.
Description of the Preferred Embodiment
The preferred embodiment herein disclosed is not intended to be exhaustive or to limit the invention to the precise form disclosed. It is chosen and described to illustrate the principles involved to enable others skilled in the art to utilize its teachings.
Referring now to the drawings, automatic food cooker 10 includes a housing 12 having side walls 14, 16 and interconnecting top and bottom walls 18, 20. Housing 12 further includes a removable back end wall 22, and a removable front end wall 24. Side walls 14, 16 include a plurality of panels or gates 26 removably supported by channel members 28. Housing 12 includes a trough-shaped apron 80 which may be supported above the ground or floor by a standard set of legs or frame (not shown).
An endless conveyor 32 extends about sprockets 31 within housing 12. A series of detachable wire mesh food carriers 84 are detachably connected to conveyor runs 33 throughout the interior of the cooker housing 12. A more complete understanding of the construction and operation of conveyor 32 and food product carriers 34 may be had upon a reading of U.S. Pat. No. 3,499,380, issued to Gongwer on Mar. 10, 1978 and incorporated herein by reference.
A heat source such as gas burners 36 are positioned within housing 12 and supported adjacently above housing bottom 20 by brackets 37, 35 as illustrated in the FIGS. 4 and 5. Burners 36 are adapted for connection to a pressurized fuel gas supply (not shown) as is common in the industry.
A metal plate 38 is positioned above burners 36 and supported by brackets 40, 41 connected to housing side walls 14, 16. As illustrated in FIGS. 3-5, plate 38 substantially spans the width and length of housing 12 to separate the food products (not shown) contained in food carriers 34 from the gas flames of burners 36. Plate 38 includes an upwardly angled front end portion 42 which is positioned adjacent to a rear edge of food dip tank 44 as illustrated. Plate 38 is downwardly inclined from its front end portion 42 toward housing back end wall 22 so as to cause food drippings to drain toward the back of cooker 10. A pair of side rails 46 extend the length plate 38 to strengthen the plate and prevent food drippings from running over the sides of the plate and onto burners 36.
A water conduit 48 having a plurality of small openings is positioned along each side wall 14, 16 of housing 12 and supported above plate 38 by brackets 49 attached to frame 29. Water conduits 48 are adapted to be mutually connected to an external valve and water source (not shown) by conventional connections. Water is sprayed from the conduits upon the hot plate 38 during cooking. This generates steam to moisten the food product within the cooker.
A pair of food product dip tanks 44, 45 are positioned beneath the sprockets 81 of food conveyor 32. As food carriers 34 are pulled around sprockets 31 the food products are immersed in a flavored sauce 47 contained in tanks 44, 45. Tank 45 is slidably supported by brackets 51 on side rails 46 of plate 38 as illustrated best in FIG. 5 and is removable for cleaning. Tank 44 is supported upon transverse rods 58 and is also removable for cleaning.
A rear door 52 is connected by hinge 54 to housing back end wall 22 to close food carrier removal opening 25. Door 52 contacts extension plate 68 when in its closed position of FIGS. 3 and 7.
Side by side front doors 58 and 60 are connected to housing side walls 14, 16 respectively by hinges 62, 64 to close food carrier loading opening 25. Doors 58 and 60 contact extension plate 61 at top 18 of cooker 10 when in their closed position of FIGS. 3 and 6.
As illustrated in FIGS. 6 and 7, cooker top 18 is inset at each end to provide a vent opening 70 above each of the doors 52, 58 and 60 when closed.
In operation, with dip tanks 44, 45 filled to an appropriate level with sauce 47, burners 56 are connected to an appropriate source of fuel (not shown), water conduits 48 are connected to an appropriate water source (not shown) and the fuel exiting burners 36 is ignited to heat plate 38. As further detailed in incorporated U.S. Pat. No. 3,499,380, a plurality of poultry parts or other food products are loaded into food carriers 34. The loaded carriers 34 are then attached to conveyor 32 through front opening 25 at end 24 of the cooker as the conveyor is manually rotated by handle 66.
After attaching all the food carriers to the conveyor an electric motor (not shown) is actuated to turn sprockets 31. As the food carriers 34 travel along conveyor 32 over sprockets 31, the food is dipped in food tanks 44, 45 to coat the food with sauce 47. By dipping the food products into sauce at each end of conveyor 32 as shown, the flavor of the food product is enhanced. Further the use of the second dip tank 45 coats the food product sufficiently to prevent the skin from sticking to carriers 34 thus enhancing the aesthetic quality of the food product to a consumer and making cleaning of the food carriers easier.
After the food product is cooked and the electric motor is turned off door 32 is opened and food carriers 34 are removed from the conveyor 32 through opening 23 at end 22 of cooker 10. The method of attaching and removing carriers 34 to conveyor 32 is detailed in incorporated U.S. Pat. No. 3,499,380.
During cooking of the food product it should be understood that doors 52, 58, 60 are normally in the closed position illustrated in FIG. 3 and are opened only for checking the status of the food product, adding sauce 47 to tanks 44, 45 or loading and removing carriers 34. In this position the internal temperature of the cooker may be better controlled.
Vent openings 70 provide the dual functions of allowing proper ventilation for the heat source and allowing a safe escape of steam and heat away from the user when the doors are opened.
If during cooking the user desires additional moisture, a water valve (not shown) may be opened to spray the heated plate 38 with water to generate steam within the interior of cooker 10. Excess steam and heat exits cooker 10 via vent openings 70. Further any sauce dripping from the food will contact plate 38 and create steam to moisten and add flavor to the food product. Such drippings are confined on plate 38 by side rails 46 and angled end 42.
It should be understood that the invention is not limited to the details above but may be modified within the scope of the appended claims.
Claims
I claim:
1. An automatic cooking machine having a frame, a housing supported on said frame, said housing having a pair of spaced side walls, an interconnecting top wall and bottom wall, and a pair of end walls, a heating means disposed in said housing for elevating the temperature therein to allow cooking of food products, carrying means disposed in said housing above said heating means for holding food products to be cooked by the heating means, conveyor means disposed in the housing for transporting the carrying means in a spaced relationship over said heating means, said housing having an access opening over said end wall at each end of the housing, a door means connected to said housing adjacent each said access opening for spanning the opening when in its closed position, each door means having an upper edge spaced from said top wall when in its said closed position to define a vent opening, one said access opening constituting means for accessing said conveyor to attach said carrying means to the conveyor, another said access opening constituting means for accessing said conveyor to detach said carrying means from the conveyor.
2. The automatic cooker of claim 1 wherein a sauce tank is mounted in said housing near each end thereof and under said conveyor means, said conveyor means constituting means for transporting said carrying means into each sauce tank.
3. The automatic cooker of claim 1 wherein said heating means includes a plate disposed below said conveyor means and a plurality of gas outlet ports disposed below said plate to radiate heat toward said plate, said plate protecting the outlet ports from drippings falling from said food products.
4. The automatic cooker of claim 2 wherein said plate is supported in said housing in an angled orientation to facilitate flow of drippings toward an end of said housing.