Automated self-contained cooking assembly
10058213 ยท 2018-08-28
Inventors
Cpc classification
International classification
Abstract
A cooking assembly comprises a container for receiving cooking fluid therein and comprising a vat and a reserve tank in fluid communication with the vat such that overflow of cooking fluid from the vat flows into the reserve tan. The vat provides for cooking food products therein. The reserve tank includes at least a two stage filter for filtering the cooking fluid overflow so as to return it back to the vat. A mobile basket provides for receiving food product and positioning it within the cooking vat and removing it therefrom when cooked. A three stage air filtering system is provided for suctioning air above the container during cooking and filtering it to provide clean air to the outside of the assembly. The assembly can be provided in a single enclosed unit with an in-feed for food products and an out-feed to discharge cooked food products therefrom.
Claims
1. A cooking apparatus comprising: a housing enclosure defining closed top and bottom ends, closed lateral sides and closed front and rear sides, the housing including an inlet for receiving food product near the top end thereof and an outlet for dispensing cooked food product near the bottom end thereof, the housing comprising an internal frame structure and a hood enclosure defining the top end of the frame; a closed-circuit hands-free cooking assembly positioned within the housing and mounted to the internal frame structure, the cooking assembly comprising: a container for receiving cooking fluid therein and comprising a vat and a reserve tank in fluid communication with the vat, the vat comprising a top open end that is adjacent a top open end of the reserve tank, a passage being interposed between the top open ends of the vat and the reserve tank, wherein the vat is purposely designed to overflow such that overflow of cooking fluid from the vat continuously and automatically flows into the reserve tank via the passage thereby continuously renewing the cooking fluid between cooking cycles and avoiding overheating the cooking fluid in the vat, the vat being positioned near the top end of the housing and comprising a cylindrical configuration that substantially eliminates hot spots, wherein the reserve tank does not include a heating element thereby cooking fluid received therein is not heated, wherein the cooking fluid in the vat is maintained at a predetermined optimal frying temperature for one cooking cycle before overflowing into the reserve tank; a heating element mounted within the vat for heating the cooking fluid therein for cooking a food product, the heating element is configured to provide uniform heat density throughout the vat thereby avoiding hot spots; a filtering system mounted within the reserve tank for filtering the cooking fluid received from the vat; and a conduit in fluid communication with the reserve tank and the vat for selectively returning the cooking fluid to the vat from the reserve tank, thereby causing cooking fluid in the vat prior to the returned cooking fluid to overflow from the vat into the reserve tank, wherein the cooking fluid returning to the vat from the reserve tank has not been heated within the reserve tank subsequently to having been heated by the heating element in the vat and has been filtered by the filtering system; a robotic assembly positioned within the housing and mounted to the internal frame structure frame and comprising: a movable basket near the top of the housing for receiving food product from the inlet and for moving the food product therein in and out of the vat for a cooking cycle thereof and for dropping the cooked food product to the outlet via a funnel for dispensing thereof; a movement imparting device for imparting a movement to the movable basket; and a control panel positioned outside the housing and being in operational communication with the cooking assembly and the robotic assembly; wherein the hood enclosure is positioned above the container and defines a space above the container, the hood enclosure being configured for: (i) preventing cooking fluid fumes from escaping into the ambient air outside the housing, (ii) minimizing oxygenation of the cooking fluid; (iii) allowing constant return of make-up air; and maintain negative pressure in the space above the container.
2. A cooking apparatus according to claim 1, wherein the filtering system includes a sieve for catching particles from the oil flowing from the vat.
3. A cooking apparatus according to claim 1, wherein the filtering system includes a filter canister containing a cotton cartridge for filtering the cooking fluid.
4. A cooking apparatus according to claim 1, further comprising a baffle filter for receiving and filtering the air above the container during cooking.
5. A cooking apparatus according to claim 4, further comprising a condenser in fluid communication with the baffle filter for condensing the air received from the baffle filter.
6. A cooking apparatus according to claim 5, wherein the condenser comprises a scrubbing tower for passing the air from the baffle filter therethrough, the scrubbing tower defining a channel containing therein condensing elements, a water circuit being positioned above the condensing element for spraying the condensing elements with water.
7. A cooking apparatus according to claim 6, wherein the scrubbing tower has a central channel for passing the air from the baffle filter therethrough towards a floor of the scrubbing tower, and an outer channel containing the condensing elements for receiving the air from the floor therethrough thereby providing the air from the floor to drop in temperature and be filtered by the condensing elements.
8. A cooking apparatus according to claim 6, wherein the condensing elements are glass marbles.
9. A cooking apparatus according to claim 7, further comprising a pump for pumping water from the floor of the scrubbing tower through a chiller for re-spraying the water on the condensing elements.
10. A cooking apparatus according to claim 5, further comprising a carbon filter in fluid communication with the condenser for filtering the air received from the condenser.
11. A cooking apparatus according to claim 10, wherein the carbon filter comprises a container and carbon therein providing for absorption of particles in the air passing therethrough.
12. A cooking apparatus according to claim 10, wherein the charcoal is activated charcoal.
13. A cooking apparatus according to claim 1, further comprising a basket assembly, the basket assembly comprising a movable basket for receiving food product therein, the movable basket being automatically movable into and out of the vat.
Description
BRIEF DESCRIPTION OF THE DRAWINGS
(1) In the appended drawings:
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DETAILED DESCRIPTION
(26) Generally stated and in accordance with an embodiment, there is provided a cooking assembly comprising a container for receiving cooking fluid therein and comprising a vat and a reserve tank in fluid communication with the vat such that overflow of cooking fluid from the vat flows into the reserve tank. The vat provides for cooking food products therein. The reserve tank includes at least a two stage filter for filtering the cooking fluid overflow and returning it back to vat. A mobile basket provides for receiving food product and positioning it within the cooking vat and removing it therefrom when cooked. A three stage air filtering system is provided for suctioning air above the container during cooking and filtering it to provide clean air outside the assembly. The assembly can be provided in a single enclosed unit with an in-feed for food products and an out-feed to discharge cooked food products therefrom.
(27) In an embodiment, the food product is frozen food product. In an non-limiting illustrative embodiment, the frying temperature is about 385 C.
(28) With reference, to the appended Figures, non-restrictive illustrative embodiments will be herein described so as to further exemplify the disclosure only and by no means limit the scope thereof.
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(32) Apparatus 1A and 1B are similar to each other and as such will be reference to during the description of assembly 10.
(33) With reference to
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(36) The reserve tank 16 does not include a heating element and as such, oil therein which was received from the oil vat 14 not only did not have enough time to be overheated within the oil vat 14 (because it is substantially pushed out after each cooking cycle), but also substantially maintained its optimum frying temperature. After each cooking cycle this oil from the reserve tank 16 is pumped, by pump 20 and via conduit 22, into the oil vat 14. In an embodiment, the reserve tank 16 may also allow the oil to cool down if such cooling is needed. This oil is pumped into the oil vat 14 via the inlet 26 which is at the side of the oil vat 14, thereby consequently pushing heated oil from the top of the oil vat 14 into the reserve tank 16 by way of passage 18. This heated oil is no longer subject to heat within the reserve tank 16 and is progressively re-pumped into the oil vat 14 after the subsequent cooking cycle. In this way, overheating of the oil within the oil vat 14 is avoided as it is constantly replenished with oil after each cooking cycle.
(37) As shown in
(38) With reference to
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(40) As shown in
(41) Turning to
(42) In another embodiment, shown in
(43) Therefore, as explained above, the assembly 10 is housed within a housing unit 11 and frozen food product F is fed to the unit 11 as shown in
(44) The compartment 116 allows the user to simply and automatically select an amount of food product F that is to be cooked and served, for example, a small, medium, large or extra-large serving of fries. This amount can be selected via a controller C (see
(45) A benefit of using an enclosed unit or sealed kitchen as described above is that oxygenation of the oil is minimized.
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(47) Thus the hood 39 encloses the oil container 12 and provides a space above container 12. In one example, this space represents an area of about 3 cubic feet (i.e. the kitchen area). The housing structure 11 (including hood 39) defining the aforementioned kitchen area is sealed with the exception the in-feed 43 and out-feed 15 openings which allows for constant return of make-up air (50-60 CFM) and maintains negative pressure in the kitchen.
(48) In one example, food products are fed into a receiving in-feed chamber formed in the housing, this receiving chamber includes an in-feed closure and an out-feed closure. When feeding the receiving chamber, the in-feed closure is open, thereby exposing the receiving chamber to the ambient environment. Once the feed process is complete, the in-feed closure is closed. In an embodiment, the out-feed opening may also have a closure that is selectively opened. In such a case, the housing may have another additional opening for allowing air into the kitchen air as discussed above. As such, in this case, once the in-feed closure is closed, this out-feed closure is opened in order to allow the food product to be emptied into the basket. The foregoing minimizes oxygen from entering the kitchen area above the container 12, when feeding food product to the unit, and contaminating the cooking oil.
(49) In still another example, the basket empties cooked food product into an out-feed receiving chamber formed in the housing structure of the unit. The out-feed receiving chamber includes first and second closures. The first closure is selectively opened to allow the basket to empty its contents into the out-feed receiving chamber. Once the basket has emptied its contents the first closure is closed and the second closure is subsequently opened to discharge the cooked food product into the ambient environment. The foregoing minimizes fumes from the cooking process escaping from the unit into the ambient air and for oxygen entering the unit during discharge. Of course, as previously mentioned, the discharge outlet or out-feed may be provided without a closure to allow for constant inflow of air.
(50) In another embodiment, the out-feed opening does not have a closure. As such, the robotically controlled basket unloads fried product through the outlet/out-feed opening and into a dump station within the housing unit. The out-let serves a dual purpose: namely uninterrupted dumping of product and continuous air flow into the kitchen to maintain negative pressure. The foregoing prevents fumes escaping into the ambient air while the fryer is in operating mode. Should the exhaust system experience a break-down, the complete unit will automatically shut-down through a computer command.
(51) Turning to
(52) With reference to
(53) The chiller unit or condenser 44 (the terms chiller unit and condenser are used interchangeably) provides for emulsifying or solidifying grease parceled by means of cold water (for e.g. 42 F.) shower over marbles. This water may be recirculated or simply dispensed. In an embodiment, the baffle filter 42 is located in the hood assembly 39 (as explained above, see
(54) The baffle filter 42 is positioned at the hood 39 and serves to catch particles such as grease particles and water mist that are suctioned from the kitchen area. Once the air is filtered through the baffle filter 42, it flows into an air conduit 48 which brings the air to the condenser 44.
(55) More particularly and with reference to
(56) Turning back to
(57) A water circuit 62 is positioned adjacent the outer tower and comprises a nozzle 64 at its free for spraying the glass marbles 60 with cold water. The cold water flows along the glass marbles 60 towards the bottom area 54 of the outer channel 58 and is limited by floor 57, the water rises from there and a pipe 59 provides for evacuating the water overflow in order to maintain the water surface at surface level 56. A pump 66 (also shown in
(58) In an embodiment and as shown in
(59) Cold water is thus continuously recirculated onto the glass marbles 60.
(60) The air that passes upward through the outer channel 58 flows through the pile of cold glass marbles 60. The spherical surface of the glass marbles 60 increases the condensing surface area thereby increasing the efficiency of condensation of the air passing therethrough. As such the air coming up the outer channel drops in temperature and releases its water content, moreover the glass marbles 60 act as grease traps.
(61) Thus the air is filtered through the condenser 44 having been cooled down and released its water, grease and odours, flows into conduit 72 (also shown in
(62) Referring again to
(63) The compressor 80 is a ring compressor provides for moving the clean air back into the system 10 to circulate therein.
(64) Certain non-limiting features and advantages of the present assembly and system therefore including processes therefore will be discussed below so as to further exemplify assembly 10.
(65) A hands free system is provided for continuously filtering the oil after every serving as there is no manual intervention for frying time and temperature, thus avoiding overloading the basket due to portion control. Moreover, the portion control of the food product maintains a constant temperature and minimizes oil absorption. The vat over-flow design removes floating crumbs while maintaining optimum frying temperature. The heating element is designed with minimum watts per square inch of surface, reducing scorching and hot spots. The ratio of total element wattage to oil volume is designed to maintain optimum frying temps throughout the cooking cycle. The multi-stage filter which consists of a sieve, sifter, strainer, screen, mesh filter and the like provides for collecting floating crumbs. The subsequent filter provides a replaceable cartridge. The oil filtering process provides for maximizing the life of shortening. The breakdown of oil is attributed to element scorching, aeration, high frying temp and salting and product residue floating in the oil. The foregoing is substantially avoided by the present process.
(66) The enclosed kitchen area minimizes aeration. The present assembly avoids air pollution, for example, a commercial open vat fryer of comparable size (30 lbs of oil) would require a minimum of 900 CFM of exhaust air to the atmosphere through a kitchen hood, ducting and roof fan. The grease vapours from the sealed kitchen are drawn through a baffle filter, a scrubber/quenching tower of cold water and a replaceable charcoal filter. In an embodiment, this multi-stage system purifies the air down to 0.3 microns of particulate matter and odors and is approved for use in a non-ventilated atmosphere. Thus the need for conventional exhaust hood, fan and make-up air system is eliminated.
(67) In an embodiment, the apparatus unit is on castors and can be operated from any commercial location with no means of exhaust to the outside.
(68) In an embodiment, the main components of the assembly (basket, air and oil filters) are fully integrated.
(69) In an embodiment and as shown in
(70) In an embodiment, the controller C selectively linked to the various components of the assembly 10 to receive information therefrom and to send signal commands thereto for control thereof. In an embodiment, the assembly 10 comprises electro-mechanical components such as motors, solenoids and heaters. In addition various readers indicate the position of many components during their specific motion such as on/off, in/out or up/down. Linear inputs sense parameters that vary in time such as, for example, angles, temperature and weight. The foregoing components can be inked to the controller C. The controller C provides for managing the operations needed to perform all the steps in the present frying method or process.
(71) In an embodiment, all the moving parts or heating elements of the assembly 10 are driven by solid-stated switches that are turned On or Off by the controller. The various inputs are read by the controller and the program running the controller acts accordingly and sends the appropriate signal. The controller also reads linear inputs (having a linear value for example between 0 to 100%); this used for example, in temperature reading and linear positioning (of the basket for example).
(72) In an embodiment shown in
(73) The program running the controller C takes into account a variety of factors such as response time between an input command and a output execution from a component of the assembly 10, the level of performance of the various mechanisms used in the assembly 10 and the like. Thus, the controller C provides a user or operating for assessing the performance of the assembly 10.
(74) The present assembly and system therefore provides for the elimination of a kitchen exhaust system, elimination of air pollution, reduced energy consumption, lower insurance costs, reduced labour and operating costs while providing consistent quality fried products in less than 1 minute serving time and substantially avoiding food waste.
(75) The various features described herein can be combined in a variety of ways within the context of the present disclosure so as to provide still other embodiments. As such, the embodiments are not mutually exclusive. Moreover, the embodiments discussed herein need not include all of the features and elements illustrated and/or described and thus partial combinations of features can also be contemplated. Furthermore, embodiments with less features than those described can also be contemplated. It is to be understood that the present disclosure is not limited in its application to the details of construction and parts illustrated in the accompanying drawings and described hereinabove. The disclosure is capable of other embodiments and of being practiced in various ways. It is also to be understood that the phraseology or terminology used herein is for the purpose of description and not limitation. Hence, although the present disclosure has been provided hereinabove by way of non-restrictive illustrative embodiments thereof, it can be modified, without departing from the scope, spirit and nature thereof and of the appended claims.