Food dispensing cycle and means
Patent References 3261650 3275393 3517899 3608770 3719408 3752550 3759661 3834865 Apparatus for storing, refrigerating and heating food items Apparatus for heating a food item while retaining its moisture and nutritional components InventorAssigneeApplicationNo. 09928546 filed on 05/08/1996US Classes:221/1, PROCESSES221/150R, With cooling or heating312/236, WITH HEATING, COOLING OR HEAT EXCHANGE MEANS165/918, HEATED AND COOLED FOOD CABINETS AND/OR TRAYS219/386Portable or mobileExaminersPrimary: Lillis, Eileen D.Attorney, Agent or FirmForeign Patent References
International ClassA47J 39/00DescriptionTECHNICAL FIELD This invention relates to a food dispensing cycle and means for undertaking it. BACKGROUND ART The dispensing of food in large organisations frequently involves the preparation of food at a first location followed by its being moved and then dispensed at a second location. At the first location the food is prepared and then divided intoindividual portions on a utensil, such as a plate or bowl, which will be presented to an individual consumer at the second location. Given the prepared utensil is loaded with food at the first location there arise the need to ensure that the food iskept at a storage temperature where deterioration will be minimised or eliminated until a regeneration step is undertaken to ensure that the consumer receives the food on its utensil without having been contaminated in some way, in a good and visuallyattractive condition and at the correct temperature. To meet this requirement it is commonly the practice to make use of mobile trolleys at the second location into which trays of prepared food from the first location are placed and a regenerative cycleis then undertaken either by way of heating/cooling means in the trolley or to which the trolley can be linked. GB Patent 1527 119 shows a mobile container having an insulated outer case which is insulated and divided into compartments each containing a set of tray supports in the form of upper and lower flanges each side and at the back. Each tray haslocations for holding in the supports and several apertures along the sides. These hold bowls provided with covers for the hot food. Underneath each row of apertures is a heating element on which the bowls sit raised above the tray surface but retainedby raised portions on tray and bowls. The compartment is otherwise refrigerated the remainder of the tray area being taken up by cold food. This arrangement requires special trays and heaters and does not readily lend itself to food regenerationprocesses. It also does not provide readily for a change in the area of the tray subject to heating as distinct from cooling or for maintenance at a temperature approximating to ambient temperature in the region of the trolley. DISCLOSURE OF INVENTION According to a first aspect of the present invention there is provided a method of dispensing food whereby wherein food prepared at a first location is transported to a second location for dispensing in a working cycle characterised by 1apportioning the food onto a plurality of trays at the first location; 2 loading the plurality of trays into a rack to give, in combination, a spaced array of loaded trays the spaced array having predetermined overall dimensions; 3 transporting thespaced array to an intermediate location; 4 placing the spaced array into a containment with an internal volume of sufficient size to receive at least one spaced array; 5 transferring the containment along with its spaced array or arrays to the secondlocation; 6 regenerating food in the spaced array while within the containment, 7 dispensing food from trays in the spaced array; 8 returning the racks back to the first, or some other, location for re-use. According to a first preferred version of the first aspect of the present invention the step of regenerating food is undertaken by way of heating and/or cooling means located in the containment. According to a second preferred version of the first aspect of the present invention the step of regenerating food is undertaken by way of heating and/or cooling means demountably coupled to the containment. According to a third preferred version of the first aspect of the present invention or any preceding preferred version thereof the containment is mobile. According to a second aspect of the present invention there is provided apparatus for dispensing food comprising a containment adapted to receive at least one removable rack, the rack being adapted to contain at least two removable tray for foodfor regeneration. BRIEF DESCRIPTION OF DRAWINGS An exemplary embodiment of the invention will now be described with reference to the accompanying drawings which show a method of dispensing food and equipment therefore of which: FIG. 1 is a perspective view of a trolley, FIG. 2 is a perspective view of a rack and trays for incorporation in the trolley of FIG. 1; and FIG. 3 is a block diagram showing the steps involved in the method. MODES FOR CARRYING OUT THE INVENTION FIG. 1 shows a mobile trolley 11 for food regeneration which has an interior volume 12 having dimensions: length L, height H and depth D. The interior volume 12 is accessed through aperture 13 can be closed by doors 14A, 14B. The interior volume12 is substantially free of an obstructions and is of a size and shape to accommodate two racks described in connection with FIG. 2. The trolley is equipped with castors W to enable it to be readily moved. FIG. 2 shows a rack 15 is made up of corner posts 16 to 19 linked by pairs of horizontally opposed rail pairs A, A' to F, F'. Mid posts M1, M2 serve to divide the interior parts of the rack into two vertical halves and to support the inner. Eachpair of rails serves to accommodate a pair of trays. Typically rails C, C' support trays 20A, 20B. The rail pairs A, A' to F, F' are spaced so as to provide clearance above each tray enabling each tray to hold food for an eventual consumer. The rack15 is of sufficient strength and rigidity to support without distortion a full complement of tray pairs each tray being loaded with foodstuff so that the rack and trays (along with their contents) constitute a racked array. The outside dimensions of thearray: width X, height Y and depth Z are slightly smaller than the interior dimensions L, H, D of the trolley so that two loaded racks are a snug fit within the interior volume 12 of the trolley 11 so that the rack 15 is prevented from excessive movementrelative to the trolley 11. The trolley 11 has an end section 21 which contains an electrically powered heater and fan to enable air at a predetermined temperature to circulated within the interior volume 12, or a part thereof as defined by baffles within the trolley orlocated on each tray. This enables food on each tray, or a particular part of each tray, to be warmed in accordance with a predetermined program established by way of a control panel 22. The trolley 11 also has an end section 23 which contains arefrigerating unit and fan to provide for air to be cooled and circulated over a region of each tray where food is to be maintained cool. The trolley 11 can be plugged into a power supply by way of lead 24 to enable the heating and cooling systems to beoperated. The method of operation of the food dispensing system will now be considered with particular reference to FIG. 3. Supply location 30 represents a food preparation area (the first location)for supplying a number of consumer sites (the second location)31, 32, 33 which are in this case hospitals which are some distance from each other and from supply location30. The supply location 30 receives raw materials and supplies by path W RM. At the supply location 30 food is prepared, cooled and plated and individual amounts for an individual consumer at one of the consumer sites are placed on a tray. Trays fordelivery to a particular consumer location 31 are placed on one or more racks 15 as described in relation to FIG. 1. The racked arrays are then loaded into a refrigerated transfer vehicle 35 whereby the food is transferred to location 31. The transfervehicle 35 is equipped with a load space incorporating suitable cooling means to ensure that trays of food in each rack does not exceed predetermined limits. The transfer vehicle 35 then delivers along path S the racked arrays bearing the food to consumer site 31. At an intermediate location 34 at the site each racked array is unloaded from the transfer vehicle 35 and loaded into a regenerationtrolleys 11 of the type described in connection with FIG. 1. The loaded trolley 11 is then moved closer to the location of the eventual consumers of the contents of the trolley 11. The trolley 11 is connected to a power supply and is then powered up toenable the food content of the racked array to be automatically regenerated according to a predetermined program held in the control unit of the trolley 11. Once regeneration has been completed the trolley 11 is opened and the trays and their contentsdistributed to the recipients. Once consumption of the food has been completed the trays are returned to the racks 15 in the trolley 11. The trolley 11 is then transferred to the intermediate location 34 at the consumer site where the racks 15 loaded with the now used traysare transferred from the trolley 11 into a transfer vehicle 35 which returns the used trays and utensils to the supply location 30 for cleaning and reloading. If necessary a vehicle can deliver racks bearing food for consumption over a period of time. In such a case given that sufficient regeneration trolleys are available then the trolleys can all be loaded and programmed to ensure that regenerationoccurs at appropriate times. Alternatively if sufficient trolleys are not available then the loaded racks can be kept in some form of chilled storage. Satellite sites 32, 33 are supplied in a similar way to that described for site 31. It will be apparent that the method of the embodiment enables equipment to be utilised efficiently and to reduce the need for expensive regeneration trolleys to be transported outside the site where they are used. Each site thus retains controlof its own regeneration trolleys. The only items needing to be transported between supply site 30 and the consumer sites 31, 32, 33 are the racks bearing the trays and two or three racks are substantially cheaper than a regeneration trolley. A singleregeneration trolley can be used for a given location, say a word, to provide meals for, say three, eating periods in a day. The trolley is initially charged with racks bearing loaded trays and a regeneration cycle completed prior to food beingdistributed for the first meal. This cycle can readily be repeated for two further meal periods since all that is required is the removal of racks with emptied trays, cleaning and recharging with a fresh set of racks with food bearing trays. Cleaningis readily undertaken since the interior of a trolley utilising the racks of the present invention contain little apart from the wall, and top and bottom surfaces. A supply site 30, possibly many miles from one or more consumer sites, can be equipped, staffed and operated to take advantage of economies of scale and so supply consumer sites more efficiently than would be possible where each consumer site hasis own food preparation and distribution system. In addition the transportation of more racks than regeneration trolleys can beundertaken in a given vehicle. At the supply site the cleaning and storage of racks and the loading of racks with chargedtrays involves smaller storage and handling areas at the supply site than would be possible where charged trays have to be loaded into regeneration trolleys recovered from the or each consumer site. * * * * * Field of SearchPROCESSESWith cooling or heating Heating and cooling combined WITH HEATING, COOLING OR HEAT EXCHANGE MEANS Wheeled Having sliding drawer Combined with container, enclosure, or support for material to be heated Portable or mobile Food conveying type (e.g., lunch box) HEATED AND COOLED FOOD CABINETS AND/OR TRAYS |
| ||||||||||||||
