The present disclosure relates generally to food cooking and/or reheating systems and methods and more particularly to location based food cooking and/or reheating systems and methods.
In many restaurant service settings, food is prepared in advance and held until it is delivered to the customer. In a typical fast food restaurant setting, since many restaurant customers expect to receive ordered food items quickly and often within less time than it takes to prepare the food items individually, food items are prepared ahead of actual orders and the food items are held in a condition to keep them ready for sale.
In delivery food services, often times food may be prepared after a customer places a specific order; however, the food must then be transported to the customer. The actual delivery of the food takes an indeterminate amount of time based upon, for example, traffic conditions, number and order of deliveries on a route, as well as, delivery person skill and efficiency.
Food is also often prepared in one location and delivered and/or served to a consumer at another location, whether the food is delivered and/or served to a consumer off the premises (such as a pizza delivery), delivered and/or served to a consumer in another room (such as a banquet hall), or delivered and/or served to a consumer in another part of the location at which the food is prepared for consumption by the consumer (such as at a purchase counter). In any event, the food may have a desired temperature at each physical location in the delivery process. For example, uncooked food may need to be kept refrigerated until shortly before cooking, for example, in a refrigerator or cooler. The food may then need to be cooked to a desired temperature at a cooking location. After cooking, the food may need to be kept at a temperature lower than the cooking temperature (sometimes called the stasis temperature) until just before delivery to a consumer to prevent overcooking and loss of palatability of the food. However, providing food to the consumer at the stasis temperature after cooking may not provide an optimal palatable experience for the consumer. Thus, the food may need to be reheated just before delivery to give the consumer an optimum dining experience.
In both restaurant and delivery settings, prepared food holding solutions have resorted to prolonging and slowing of the gradual degradation of prepared food quality over time. Recent advances in location identification technology, for example GPS and cellular or mobile signal triangulation, result in new available information that can be used to improve the characteristics of prepared food at a time of delivery to a customer.
Currently, if food needs to be reheated prior to delivery, the heating process must be manually started by an operator. As a result, the food may not have adequate time to warm up, the food may be warmed up too early, causing the food to restart the cooking process, or the rewarming process may be forgotten altogether.
An exemplary embodiment of a location based holding system including a holding device. The holding device includes a food storage chamber and a temperature sensor that senses a temperature of the food storage chamber. A temperature control device is operable to change the temperature of the food storage chamber. A location device determines the physical location of the holding device. A memory stores information about a food item located in the food storage chamber. A processor is operatively coupled to the memory, the location device, and the holding device. The processor activates the temperature control device of the holding device based on the physical location of the holding device.
An exemplary embodiment of a method of holding prepared food includes receiving cooked food within a compartment of a holding device. The holding device is operated to apply a first treatment which includes at least one of a first temperature and a first humidty. The treatment is temporally applied according to a holding profile. A value is received that is indicative of a time until delivery of the prepared food. The received value is monitored against the holding profile. Upon a predetermined time until delivery, the holding profile changes form a holding phase to a consumption phase. The holding device is operated to apply a second treatment according to the holding profile. The second treatment includes at least one of a second temperature and a second humidity.
A further exemplary embodiment of a location based holding system includes a holding device. The holding device includes a temperature sensor that senses a temperature about the holding device. The holding device includes a temperature controlled device operable to change a temperature of the holding device. A food container is operable to receive a cooked food to be held by the holding device. A location device determines the physical location of the holding device. A memory stores information about a food item located in the food container. A processor is operatively coupled to the memory, the location device, and the holding device. The processor activates the temperature control device of the holding device based on the physical location of the holding device.
The location based food temperature system described below may incorporate food storage devices and/or modular food storage systems, such as those devices and systems described in U.S. Ser. No. 13/326,667 and U.S. Ser. No. 14/850,914, each of which are hereby incorporated by reference herein in their entireties.
Although the following text sets forth a detailed description of numerous different embodiments, it should be understood that the legal scope of the invention is defined by the words of the claims set forth at the end of this patent. The detailed description is to be construed as exemplary only and does not describe every possible embodiment, as describing every possible embodiment would be impractical, if not impossible. One could implement numerous alternate embodiments, using either current technology or technology developed after the filing date of this patent, which would still fall within the scope of the claims.
Unless a term is expressly defined in this patent using the sentence “As used herein, the term ‘______’ is hereby defined to mean . . . ” or a similar sentence, there is no intent to limit the meaning of that term, either expressly or by implication, beyond its plain or ordinary meaning, and such term should not be interpreted to be limited in scope based on any statement made in any section of this patent (other than the language of the claims). To the extent that any term recited in the claims at the end of this patent is referred to in this patent in a manner consistent with a single meaning, that is done for sake of clarity only so as to not confuse the reader, and it is not intended that such claim term be limited, by implication or otherwise, to that single meaning. Finally, unless a claim element is defined by reciting the word “means” and a function without the recital of any structure, it is not intended that the scope of any claim element be interpreted based on the application of 35 U.S.C. §112(f).
As used herein, the term “location based food temperature system” is hereby defined to mean any system that is capable of holding food in a fully prepared state, which is ready for immediate sale, consumption, or use. The term “location based food temperature system” is further defined to mean any system that is capable of holding food in a partially prepared or intermediate state, which is ready for further preparation. The term “location based food temperature system” is further defined to include hot and cold food holding systems, which may include conventional heating and/or cooling elements, such as, for example, IR toaster elements, radiant heating elements, refrigeration coils, etc., or any other type of heating or cooling device.
As used herein, the term “change in temperature” also includes may be achieved by a change in a heating or cooling method. Different heating or cooling methods include, heating in an oven or heating in a broiler with combustion heating elements or electrical heating elements, toasting with electrical or IR heating elements, cooling or freezing with a cooling or refrigeration coil, or any other method of changing the temperature of a food item. Convection or other air circulation heating/cooling methods can carryout changes in temperature, but also other environmental conditions.
As used herein, the term “heat capacity” includes the amount of energy required to be added to (or removed from) a food item to change the temperature of the food item from a stasis temperature to an optimum consumption temperature. The term “heat capacity” also includes an amount of time that is needed to raise a food item from a stasis temperature to an optimum consumption temperature for a given temperature element (e.g., heating or cooling element).
Once food is cooked or otherwise prepared for consumption, the quality of the food for consumption begins to degrade over time. Current solutions in food holding technologies for holding previously prepared food focus on prolonging or slowing this degradation to increase an acceptable length of time from the time of food preparation to the time of customer delivery while keeping food within a range of acceptable qualities for consumption.
Rather, food treatment after cooking can be performed according to a treatment profile exemplarily as depicted in
As will be described in further detail herein, the holding system 20 includes a location tracking device 26 (
In embodiments of the location based holding system 20, a temperature sensor 40 and a humidity sensor 42 are connected to both the holding device 34 and the processor 32. The temperature sensor 40 and the humidity sensor 42 operate to respectively monitor the temperature and humidity within the holding device 34 and provide indications of those to the processor 32. The processor 32 uses this temperature and/or humidity information in a feedback loop to control the temperature control device 36 and/or the humidity control device 38 to achieve a target condition. The target condition may be defined according to a treatment profile.
In still further embodiments, additional sensors 43 as may be used in food holding application may be used in connection with the food holding device 34 to provide additional information to the processor 32 for use in controlling the environment within the holding device 34. One exemplary embodiment of an additional sensor 43 is a scale which provides information regarding the weight of the good in the holding device 34. Another exemplary embodiment of an additional sensor 43 is an electronic nose device that measures, tests, and/or monitors chemical composition in the headspace of the holding device 34 about the food held therein. From the sensed chemical composition, electronic nose sensors can detect food decomposition products (e.g. Sulphur, amines, aldehydes, ethanol, ethylene, metal oxides, etc. by chromatography, mass spectrometers, and/or olfactometry) to determine the freshness of the food item stored within the holding device 34. The processor 32 may use this information to adjust a holding profile or to adjust a delivery order to remedy or mitigate degradation of food quality.
As mentioned above, the processor 32 operates with a location tracking device 26 to track a location of the location based holding system 20, exemplarily within the delivery vehicle 12. The location tracking device 26 may employ GPS or wireless/cellular signal triangulation or other known location tracking techniques. The processor further receives or accesses route and/or route conditions 44. The route information may also be a part of a navigation system of the delivery vehicle so that the driver of the vehicle follows the projected route. This may be stored in a memory or may be received by the processor 32 from a remotely located source, exemplarily through wireless communication. From the position of the vehicle and the route and/or route conditions, the processor 32 calculates a time until delivery for each of the orders of cooked food held in the holding device. The route condition may include indicators of traffic, construction, or other sources of delay.
The processor 32 is also connected to at least one computer memory comprising information regarding the order content 46 the delivery location 47 for each order, as well as stored holding profiles 48. In an embodiment this information may exemplarily be stored together for each order, or may be stored and provided separately to processor 32 as needed by the processor 32. The processor 32 selects one or more holding profiles 48 stored on a computer readable medium for operation of the holding device 34 or different compartments or zones (as will be explained in further detail with respect to
In an exemplary embodiment, the location based holding system 20 uses location information to calculate the time remaining until the food item is delivered and/or served to the intended consumer. When the time remaining reaches a threshold value as exemplarily defined in the holding profile, the location based holding system 20 operates to change the treatment conditions within the holding device 34. Exemplarily, the holding device 34 may be warmed, cooled, humidified, or dehydrated to impart these on the food item so that the food item reaches the consumer at or very near the time the food item reaches its optimum condition for consumption.
For example, the embodiment illustrated in
After the food item is cooked at the restaurant 14, the food item cools to its stasis temperature before being placed into the holding device 34 of a location based holding device 20 located on a vehicle 12. Alternatively, location based holding device 20 may operate to bring the food item down to the stasis temperature and hold it there during most of the delivery process. In an embodiment, this may occur passively by placing the food item in the location based holding device 20 at the cooking temperature, or near to the cooking temperature. The location based holding device may operate passively from the dissipating heat of the food product until the stasis temperature is reached. After the stasis temperature is reached, the location based holding device may operate to maintain the stasis temperature as described. In another embodiment, as the temperature in the location based holding device cools towards the stasis temperature the temperature control device 36 operates to slow the rate of temperature change such that undershoot or overshoot of the stasis temperature inside the location based holding device is minimized or managed. Regardless, the processor 32 may take in temperature information from the temperature sensor 40 and the processor 32 may activate the temperature control device 36 to adjust the temperature of the food holding chamber within a desired temperature range of acceptable stasis temperatures. The processor 32 may continuously or periodically receive location information from the location device 26 and the processor 32 may calculate the remaining distance and/or time to reaching the first delivery location 16.
The processor 32 may be communicatively connected to a computer memory to receive food item information such as the stasis temperature of the food item and the optimum consumption temperature of the food item Such memory may also include information regarding the power of the temperature control device 36 and the heat capacity of the food item (e.g., how much energy would be required to raise or lower the temperature of the food item by a set amount, such as one degree Fahrenheit). With this information, the processor 32 may calculate how much time is required to bring the food item from its stasis temperature to its optimum consumption temperature. This amount of time may be considered a “temporal threshold.” The processor 32 calculates that the food item will be delivered and/or served to the consumer at a time based upon information received from the location tracking device 26 and route information 44. The processor 32 may activate the temperature control device 36 to raise or lower the temperature of the holding device 34 an amount necessary to raise or lower the temperature of the food item to the optimum consumption temperature by the time that the food will be delivered according to the processor 32. Exemplarily, a pizza may have a stasis temperature of approximately 140 degrees F. and an optimum consumption temperature of 180 degrees F. The size of the pizza and the power of the temperature element may determine that, for example, 5 minutes of heat at 200 degrees F. is needed to raise the temperature of the pizza from 140 degrees F. to 180 degrees F. When the calculated time to reach the destination reaches 5 minutes, the processor 14 activates the temperature control device 36 and the pizza begins to warm within the holding device 34 and the warming period is timed to reach completion when the pizza reaches the first delivery location 16. In a further embodiment, the processor 32 may be provided with information regarding the warmup time and temperature profile as the temperature control device 36 warms to the target temperature. This may also be factored into the timing of when the temperature control device 36 is operated.
In some embodiments, the processor 32 may calculate alternate routes 22, 24 to the first delivery location 16, for example when traffic, weather, and/or road hazards impact the primary route 22 to the point where the alternate route 24 would take less time. The processor 32 may also continuously or periodically calculate the time remaining to the first delivery location 16 based on travel time updates impacted by traffic or weather so that the physical location at which the temperature control device 36 is activated may change during the delivery process so that the temperature of the food item reaches the optimum consumption temperature when the consumer takes delivery of the food item at the first delivery location 16.
In a still further embodiment, the holding device may be a self-contained mobile unit which includes the features as described above with respect to
Turning now to
The location based holding device 212, may exemplarily be a food cart. The location based holding device 212 may include a location device 218. The location based holding device 212 may further include a processor, a memory, a temperature sensor, and a temperature element, these features are not shown in
Each food preparation area may have a desired food temperature to optimize the food preparation process. For example, the refrigerator/freezer 203 may have a desired food temperature of between 40 degrees F. and −10 degrees F., depending on the food item, to preserve the uncooked food as long as possible. Similarly, the staging area 204 may have a desired food temperature of 50 degrees F. to 70 degrees F. to make the food preparation process more efficient, the food is only located in the staging area 204 for a short period of time, so bacterial growth should not be a problem. The food preparation counter 205, similar to the staging area 204, may have a desired food temperature of 50 degrees F. to 70 degrees F., to allow the preparer to work with the food without becoming fatigued as quickly because the preparer's hands will not be getting too cold or too hot as a result of working with the food. The cooking area 206 may have a desired temperature similar to that of the staging area 204 and the preparation area 205, or the cooking area 206 may have an elevated desired temperature to begin to pre-warm or pre-cook the food to reducing actual cooking time in the oven or stove. As discussed earlier, the holding area may have a desired temperature of 140 degrees F. to 180 degrees F. to stop the cooking process while keeping the food safe by impeding or preventing bacterial growth. These temperatures prolong the useful life of the food items in the holding area 207. The serving area 208 may have a desired temperature of 180 degrees F. or more, which may correspond to the optimum consumption temperature of the food item. In each case, the location based holding device 212 adjusts a temperature of the food holding chamber to maintain the food item(s) at the desired temperature for each food preparation area.
Turning now to
In the embodiment depicted in
In an example, the holding device operates to provide a holding profile with a comparatively low temperature and high humidity with a consumption treatment of high temperature and low humidity. The product packaging may be designed to enhance or mitigate the qualities of the treatments applied by the holding device. Exemplarily the packaging achieves this through insulation and/or venting. Exemplarily, the portion 502 of the packaging for the sandwich may include little insulation 506 and substantial venting 510 such that the conditions of the treatments provided by the holding device according to the holding profile are applied to the sandwich while the portion 504 of the packaging 500 intended for holding french fries includes substantial insulation 508 without venting to mitigate the effects of the treatments applied by the holding device according to the holding profile in a manner that results in the effective treatment profile applied to the french fries within the packaging 500 to be closer to a predetermined optimal treatment profile for the french fries. Through the use of such a product packaging 500, entire orders may be held together and receive treatments according to a single holding profile, while individual food items receive an effectively optimized treatments for that food item type.
Sensors 118 may exemplarily monitor the condition within each of the sections produced by the climate control device 114. In an exemplary embodiment, the climate control device 104 includes a heating section 120 and a cooling section 122, containing the respective components as described above. It will be recognized that these sections, or other section may further include humidifying or dehumidifying devices to further control the climate produced within one or more sections of the container 102. One or more wires 124 exemplarily provide electrical power and/or data communication to the climate control device 104. In one exemplary embodiment, the climate control device 104 includes a processor (not depicted) which operates the components as described herein while in another embodiment, the at least one wire 124 connects the climate control device 104 to a processor which receives information from at least the sensors 118 and operates to control at least one of the fans 112, heater 114, or cold source 116. Electricity to operate these devices may further be provided on the at least one wire 124.
In use, food to be delivered is loaded into containers and placed into the delivery container 102. Cold food 126 is exemplarily loaded into the first section 108 and hot food is exemplarily loaded into the second section 110. The climate control device 104 is secured over the top of the open delivery container 102 and the heating section 120 operated to keep the second section 110 containing the hot food 128 hot with a low humidity. The cooling section 122 is operated to keep the first section 108 of the delivery container 102 and the cold food 126 located therein cool. The apparatus may be operated according to heating profiles or other manners of operation as described herein in further detail until the delivery location is reached, upon delivery, the climate control device 104 is removed from the delivery container 102 and the delivery container 102 is folded up to form a final delivery package 130 exemplarily a box with a handle for final delivery to the customer. This is depicted in
This written description uses examples to disclose the invention, including the best mode, and also to enable any person skilled in the art to make and use the invention. The patentable scope of the invention is defined by the claims, and may include other examples that occur to those skilled in the art. Such other examples are intended to be within the scope of the claims if they have structural elements that do not differ from the literal language of the claims, or if they include equivalent structural elements with insubstantial differences from the literal languages of the claims.
The present application claims priority of U.S. Provisional Patent Application No. 62/309,713, filed on Mar. 17, 2016, the content of which is hereby incorporated herein by reference in its entirety.
Number | Date | Country | |
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62309713 | Mar 2016 | US |