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WO2016018820A1 - Four posable avec éléments de conduction avancés - Google Patents

Four posable avec éléments de conduction avancés Download PDF

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Publication number
WO2016018820A1
WO2016018820A1 PCT/US2015/042278 US2015042278W WO2016018820A1 WO 2016018820 A1 WO2016018820 A1 WO 2016018820A1 US 2015042278 W US2015042278 W US 2015042278W WO 2016018820 A1 WO2016018820 A1 WO 2016018820A1
Authority
WO
WIPO (PCT)
Prior art keywords
oven
etched foil
baking chamber
heating
heating element
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/US2015/042278
Other languages
English (en)
Inventor
Caroline Elizabeth GOBLE
David Robert GOBLE
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Patentco LLC
Original Assignee
Patentco LLC
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Patentco LLC filed Critical Patentco LLC
Publication of WO2016018820A1 publication Critical patent/WO2016018820A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
    • F24C7/00—Stoves or ranges heated by electric energy
    • F24C7/08—Arrangement or mounting of control or safety devices
    • F24C7/082—Arrangement or mounting of control or safety devices on ranges, e.g. control panels, illumination
    • F24C7/085—Arrangement or mounting of control or safety devices on ranges, e.g. control panels, illumination on baking ovens
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
    • F24C7/00—Stoves or ranges heated by electric energy
    • F24C7/06—Arrangement or mounting of electric heating elements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
    • F24C7/00—Stoves or ranges heated by electric energy
    • F24C7/08—Arrangement or mounting of control or safety devices
    • F24C7/087—Arrangement or mounting of control or safety devices of electric circuits regulating heat
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B1/00—Details of electric heating devices
    • H05B1/02—Automatic switching arrangements specially adapted to apparatus ; Control of heating devices
    • H05B1/0227—Applications
    • H05B1/0252—Domestic applications
    • H05B1/0258—For cooking
    • H05B1/0261—For cooking of food
    • H05B1/0263—Ovens
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B6/00—Heating by electric, magnetic or electromagnetic fields
    • H05B6/64—Heating using microwaves
    • H05B6/6447—Method of operation or details of the microwave heating apparatus related to the use of detectors or sensors
    • H05B6/645—Method of operation or details of the microwave heating apparatus related to the use of detectors or sensors using temperature sensors
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B6/00—Heating by electric, magnetic or electromagnetic fields
    • H05B6/64—Heating using microwaves
    • H05B6/647—Aspects related to microwave heating combined with other heating techniques
    • H05B6/6482—Aspects related to microwave heating combined with other heating techniques combined with radiant heating, e.g. infrared heating
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B6/00—Heating by electric, magnetic or electromagnetic fields
    • H05B6/64—Heating using microwaves
    • H05B6/78—Arrangements for continuous movement of material
    • H05B6/782—Arrangements for continuous movement of material wherein the material moved is food
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B6/00—Heating by electric, magnetic or electromagnetic fields
    • H05B6/64—Heating using microwaves
    • H05B6/80—Apparatus for specific applications

Definitions

  • Countertop deck ovens provide a space efficient way to bake foods.
  • a number of heating technologies for such ovens are used that have certain spectral advantages.
  • microwave technology can emit wavelengths that energize water content of a food, providing a quick warming capability.
  • Radiant heat such as from wire heating elements can brown the food at a higher temperature to create a different texture than what a microwave oven can achieve.
  • U.S. Pat. No. 5,223,290 which is hereby incorporated by reference in its entirety, provides a conveyor oven for cooking food products using infrared radiation.
  • the oven uses upper and lower etched foil heaters, which are disposed above and below the upper flight of a conveyor belt passing therethrough.
  • the heaters are disposed sufficiently close to the food items to effect rapid and efficient cooking.
  • the heaters are separately controlled.
  • the oven also includes a controller for governing the speed of the belt, the time of exposure to infrared radiation, and a range of radiation wavelength between about 4 and 5 microns for cooking the food in the oven. Additional improvements are desirable, however.
  • the present disclosure provides an oven including a baking chamber.
  • An etched foil heating element is disposed within the baking chamber.
  • a first thermal control circuit is in electrical communication with the etched foil heating element to selectively drive an electrical current through the etched foil heating element.
  • a secondary heating technology element is disposed within the baking chamber.
  • a second thermal control circuit is in electrical communication with the secondary heating technology element to selectively activate the secondary heating technology element.
  • a memory contains more than one thermal profile having different levels of heating assigned to each of the etched foil heating element and the secondary heating technology element to address differing spectral heating requirements for different foods.
  • a controller is in communication with the memory, the first thermal control circuit and the second thermal control circuit and comprising a processor. The processor executes instructions according to a selected thermal profile to configure the oven to heat a particular food in the baking chamber according to an associated spectral heating requirement.
  • the present disclosure provides an oven including a baking chamber.
  • An upper etched foil heating element is disposed within the baking chamber above a support surface.
  • a first thermal control circuit in electrical communication with the upper etched foil heating element to selectively drive an electrical current through the upper etched foil heating element.
  • a lower etched foil heating element is disposed on or below the support surface within the baking chamber.
  • a second thermal control circuit is in electrical communication with the lower etched foil heating element to selectively activate the lower etched foil heating element.
  • a controller is in communication with a user interface, the first thermal control circuit and the second thermal control circuit and comprising a processor.
  • the processor execute instructions to configure the oven to: (a) present an upper temperature affordance and a lower temperature affordance on the user interface; (b) receive a first user input selecting an upper temperature setting via the upper temperature affordance; (c) receive a second user input selecting a lower temperature setting via the lower temperature affordance; and (d) heat a particular food in the baking chamber according to the upper and lower temperature settings.
  • the present disclosure provides an oven including a baking chamber with upper and lower etched foil heating elements disposed within the baking chamber wherein the upper and lower etched foil heating elements are used in combination with one or more additional heating technologies selected from the group: (1) inductive heating; (2) convection technology (i.e., movement of heated air); (3) radiant heat (i.e., heated coils); (4) microwave technology; or (5) a steam-assist mechanism.
  • additional heating technologies selected from the group: (1) inductive heating; (2) convection technology (i.e., movement of heated air); (3) radiant heat (i.e., heated coils); (4) microwave technology; or (5) a steam-assist mechanism.
  • the present disclosure provides an oven including microwave technology, steam-assist or a combination thereof
  • FIG. 1A illustrates a diagram of an oven that utilizes upper and lower etched foil heating element that are independently controlled, according to one or more embodiments
  • FIG. IB illustrates a diagram of an oven that utilizes an etched foil heating element and a secondary heating technology element, according to one or more embodiments
  • FIG. 2 illustrates a diagram of a top view of an example oven, according to one or more embodiments
  • FIG. 3 illustrates a diagram of a front view of the example oven, according to one or more embodiments
  • FIG. 4 illustrates a diagram of a right side view of the example oven, according to one or more embodiments
  • FIG. 5 illustrates a right front isometric view partially cutaway of an exemplary oven with an open door, according to one or more embodiments
  • FIG. 6 illustrates a left front isometric view of the exemplary oven of FIG. 4, according to one or more embodiments
  • FIG. 7 illustrates a left front isometric view of a stack of three exemplary ovens of FIG. 4, according to one or more embodiments
  • FIG. 8 illustrates a left front isometric view of the stack of three exemplary ovens of FIG. 7 with the doors open, according to one or more embodiments
  • FIG. 9 illustrates a left rear isometric view of the stack of three exemplary ovens of FIG. 7, according to one or more embodiments.
  • FIG. 10 illustrates a left front isometric detail view of the stack of three exemplary ovens of FIG. 7, according to one or more embodiments.
  • the system's goal is to provide consistency in the cooking of food in a countertop deck oven. This is specifically accomplished by the use of advanced elements in conduction in the form of etched-foil heaters attached to conductive metal located within a stable chamber capable of capturing and storing heat utilizing appropriate insulation materials.
  • the food is placed on the conductive surface of the bake chamber via a hinged door on the front of the oven, wherein the etched-foil heaters are activated to heat and bake the food in a consistent manner.
  • the conductive mica and etched-foil heaters which may be may be used in combination with one or more of the following: (1) inductive heating; (2) convection technology (i.e., movement of heated air); (3) radiant heat (i.e., heated coils); (4) microwave technology; or (5) a steam-assist mechanism.
  • inductive heating i.e., movement of heated air
  • radiant heat i.e., heated coils
  • microwave technology i.e., heated coils
  • microwave technology i.e., heated coils
  • a steam-assist mechanism i.e., a steam-assist mechanism.
  • the purpose of the addition of these technologies to enhance the etched-foil heating elements would be to increase (1 ) the speed of cooking or (2) the quality of the bake.
  • the addition of the above heat sources would be included solely in addition to a system comprised of the initially outlined etched-foil heating system.
  • the system may contain one or more of the additional options in any potential combination.
  • the metallic etched foil can be attached to a high temperature backing material for structural support during the etching process and subsequent placement.
  • This backing material can be one of ceramic paper, ceramic cloth, ceramic board, mica paper, mica board, fiberglass paper, fiberglass cloth or fiberglass blanket or calcium silicate board.
  • the heating element may comprise a metallic etched foil bonded with one or more layers of an inert material.
  • the inert material may comprise Kapton®, all-polyimide or mica foil.
  • the etched foil may include a metal sheet cut by a laser or by electro-chemical process.
  • the sheet may be made from any suitable material, for example, an iron- aluminum based alloy, an iron-manganese-aluminum base alloy or Timetal®.
  • the sheet may be rectangular in shape, or may have a patterned shape, which may form a coil-like structure when formed.
  • the etched foil heater is a composite heater, and more particularly still, an etched, multi-zone, mica composite heater.
  • the composite heater comprises a selectively patterned etched foil heater element, or elements as the case may be, and a mica carrier essentially encapsulating heater element.
  • the mica-insulated heater is encased in a thin (e.g., 0.030"-0.125") copper "shell," i.e., heat conducting casing.
  • the size of the internal baking chamber may vary depending on the specific usage requirements.
  • the internal baking chamber could be sized between six (6) inches wide by six (6) inches deep by two (2) inches high to twenty-six (26) inches wide by twenty-four (24) inches deep by ten (10) inches high. This does not exclude any additional potential sizing, but serves as a basis for describing the potential interior dimensions.
  • the overall oven system would be any interior sizing to accommodate for the addition of electrical components required to run and protect the heated area.
  • the electric power required for the unit ranges from 1 10 volts to 208 single-phase or three-phase system, depending on the usage requirements for the various sizes produced.
  • the oven may be set to pre-heat, if so desired, or may simply be turned on when the need to bake arises.
  • An individual sets the time and temperature on the oven based on the product to be cooked.
  • the oven will be ready to use. If not pre-heated, the individual will set the oven to pre-heat, at which time the oven will rise to temperature and then alert the individual once the set temperature has been achieved.
  • An individual inserts a food item to be baked by the oven into the baking chamber by opening the door and placing the item inside.
  • the oven will then provide an alert when the set baking time has been completed, and the oven will remain at temperature or begin to cool, based on the pre-heat settings chosen, as described previously.
  • the product will remain in the oven until it is removed by an individual.
  • FIG. 1A illustrates an oven 10 that includes a baking chamber 12.
  • An upper etched foil heating element 14 is disposed within the baking chamber 12 above a support surface 16.
  • the support surface 16 is a bottom interior portion of the baking chamber 12. In other embodiments, the support surface 16 is a suspended surface (not shown).
  • a first thermal control circuit 18 is in electrical communication with the upper etched foil heating element 14 to selectively drive an electrical current through the upper etched foil heating element 14.
  • a lower etched foil heating element 20 is disposed on or below the support surface 16 within the baking chamber 12. In an exemplary embodiment, the support surface is integrally attached to the support surface 16.
  • a second thermal control circuit 22 is in electrical communication with the lower etched foil heating element 20 to selectively activate the lower etched foil heating element 20.
  • a controller 24 is in communication with a user interface 26, the first thermal control circuit 18 and the second thermal control circuit 22 and includes a processor 28.
  • the processor 28 executes instructions to configure the oven 10 to: (a) present an upper temperature affordance 30 and a lower temperature affordance 32 on the user interface 26; (b) receive a first user input selecting an upper temperature setting via the upper temperature affordance 30; (c) receive a second user input selecting a lower temperature setting via the lower temperature affordance 32; and (d) heat a particular food 34 on the support surface 16 in the baking chamber 12 according to the upper and lower temperature settings.
  • the etched foil controllable heating element on top plus an etched foil controllable heating element on bottom can provide differential heating of a baking product, such as 500 degrees on the top but only 250 degrees on the bottom for certain number of minutes so that two sides are precisely cooked.
  • the oven 10 could have secondary heating functions.
  • a single oven 10 can contain two belts with the thinness of the etched foil heating elements 14, 20 enabling a stacked arrangement.
  • steam can be injected to form a bread crust.
  • convection fans can be used to even out heating.
  • one housing 40 can include multiple baking chambers 12. In one embodiment, one housing 40 includes three or four baking chambers 12.
  • FIG. IB illustrates an oven 100 that includes a baking chamber 102. At least one etched foil heating element 104 is disposed wdthin the baking chamber 102. A first thermal control circuit 106 in electrical communication with the etched foil heating element 104 to selectively drive an electrical current through the etched foil heating element 108. A secondary heating technology element 110 is disposed within the baking chamber 102 in order to provide a different mode (i.e., conduction or convection) or a different radiant spectral frequency than the etched foil heating element 108 to complement its cooking characteristics. A second thermal control circuit 112 is in electrical communication with the secondary heating technology element 110 to selectively activate the secondary heating technology element 110.
  • a different mode i.e., conduction or convection
  • a second thermal control circuit 112 is in electrical communication with the secondary heating technology element 110 to selectively activate the secondary heating technology element 110.
  • a memory 114 contains more than one thermal profile 116 having different levels of heating assigned to each of the etched foil heating element 104 and the secondary heating technology element 110 to address differing spectral heating requirements for different foods.
  • the secondary heating technology element 110 includes one or more of an inductive heating element 110a, a convection technology element 110b, a wire coil element 110c, a microwave heating element llOd, a steam-assist heating element llOe, and another etched foil heating element llOe.
  • a controller 118 is in communication with the memory 114, the first thermal control circuit 106 and the second thermal control circuit 112 and includes a processor 120.
  • the processor 120 executes instructions 122 according to a selected thermal profile 116 to configure the oven 100 to heat a particular food 124 in the baking chamber 102 according to an associated spectral heating requirement.
  • a user can interact with a user interface 126 to start, stop, or adjust the cooking parameters.
  • the user interface 126 can include aural, visual or haptic input controls 128 and output controls 130.
  • the user interface 126 includes a touch screen display and an audio alert capability.
  • the etched foil heating element 104 uses Nichrome 80/20 (80% nickel, 20% chromium).
  • Nichrome 80/20 is an ideal material, because it has relatively high resistance and forms an adherent layer of chromium oxide when it is heated for the first time. Material beneath this layer will not oxidize, preventing the wire trace from breaking or burning out.
  • Etched foil elements are generally made from the same alloys as resistance wire elements, but are produced with a subtractive photo- etching process that starts with a continuous sheet of metal foil and ends with a complex resistance pattern.
  • the oven 100 includes a manually-opened oven door 132 that is hinged along a bottom edge to rotate downward.
  • the oven 104 can include openings on opposite sides with a conveyor surface to perform a continuous timed cooking operation on a sequence of food items such as uncooked pizzas.
  • One of the etched foil heater element 104 and secondary heater 110 can be placed below the food 124, such as an etched foil heater element 134 that is integral to a heating surface 136 that supports the food 124.
  • an etched foil heater element 134 is disclosed in U.S. Pat. No. 4,150,280, the disclosure of which is hereby incorporated by reference in its entirety.
  • the etched foil heater element 134 may be exposed below a support surface such as a mesh that allows for radiant and convective thermal energy to reach an undersurface of the food 124.
  • a support surface such as a mesh that allows for radiant and convective thermal energy to reach an undersurface of the food 124.
  • An example includes the previously incorporated disclosure of U.S. Pat. No. 5,223,290.
  • each of the two etched foil heater elements 104, 134 can be independently user-controlled for a desired cooking attribute via an upper temperature affordance 140 and a lower temperature affordance 142 presented by the user interface 126.
  • the upper etched foil heater element 104 can have an upper temperature selected for the type of toppings of a pizza and the lower etched foil heater element 134 can have a lower temperature selected for a desired texture of a baked crust having a particular thickness and moisture content.
  • FIGs. 2 - 4 illustrate an example oven 200 having a baking chamber 202 surrounded by insulated areas 203, a control electrical chamber 205 having a recessed area 207 (FIG. 2) for an electrical connector, an insulated door 232, and an oven controller 218 that includes a display 219 (FIG. 3).
  • FIGs. 5 - 10 illustrate an exemplary oven 500 having removable legs 501 and top recesses 509 that allow for stacking of one or more ovens 500 (FIGs. 7 - 10).
  • FIG. 10 illustrates that oven doors 532 are dimensioned to not contact one another.
  • the oven assemblies described here may be further characterized by combinations of sensors, controllers, cabling and other electrical and/or mechanical components, as well as tight dimensional tolerances, surface flatness, perpendicularity, and a select surface finish.
  • temperature sensors may be configured to provide feedback to allow the controller to control the temperatures of each heating zone to keep the temperatures within a desired range.
  • the temperature sensors and controller may be configured to maintain accurate temperatures within a maximum range of approximately 150-500 degrees Fahrenheit. In alternative embodiments, the controller may be configured to maintain temperatures outside of this range.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Electric Stoves And Ranges (AREA)

Abstract

La présente invention concerne un four posable qui comporte des éléments de conduction avancée pour cuire selon un profil spectral thermique optimal d'un aliment sélectionner par utilisation sélective d'un élément de chauffage a feuille gravée et d'un élément à technologie de chauffage secondaire disposés tous deux dans la chambre de cuisson. Un dispositif de commande commande indépendamment l'élément chauffant a feuille gravée et élément à technologie de chauffage secondaire selon un profil thermique sélectionné ayant différents niveaux de chauffage assigné à chacun des éléments chauffant. Ainsi, le four chauffe un aliment particulier dans la chambre de cuisson en fonction de son exigence de chauffage spectral associé.
PCT/US2015/042278 2014-07-28 2015-07-27 Four posable avec éléments de conduction avancés Ceased WO2016018820A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US201462029670P 2014-07-28 2014-07-28
US62/029,670 2014-07-28
US14/809,866 US20160025350A1 (en) 2014-07-28 2015-07-27 Countertop deck oven with advanced conduction elements
US14/809,866 2015-07-27

Publications (1)

Publication Number Publication Date
WO2016018820A1 true WO2016018820A1 (fr) 2016-02-04

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PCT/US2015/042278 Ceased WO2016018820A1 (fr) 2014-07-28 2015-07-27 Four posable avec éléments de conduction avancés

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WO (1) WO2016018820A1 (fr)

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US11576409B2 (en) * 2017-10-24 2023-02-14 Societe Des Produits Nestle S.A. Method for preparing a foodstuff with a food processing system
US12016107B2 (en) * 2020-03-19 2024-06-18 Texas Research International, Inc. Continuous mode conveyor cooking utilizing hot air jet impingement and microwave energy
US12480662B2 (en) 2020-04-02 2025-11-25 Automation Tech, LLC Modular cooking appliance having a user interface
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US12063732B2 (en) 2020-04-02 2024-08-13 Automation Tech, LLC Modular cooking appliance having an auto-loading microwave oven
US11737467B2 (en) 2020-04-02 2023-08-29 Automation Tech, LLC Method for cooking in a modular cooking appliance
US12287098B2 (en) 2020-04-02 2025-04-29 Automation Tech, LLC Modular cooking appliance having a grease shield
US11739942B2 (en) 2020-04-02 2023-08-29 Automation Tech, LLC Modular cooking appliance having a hot air oven with a built-in magnetron and a double duty heater
US12239255B2 (en) 2020-04-02 2025-03-04 Automation Tech, LLC Modular cooking appliance
US12363806B2 (en) * 2020-06-15 2025-07-15 Whirlpool Corporation Microwave oven with integrated lower surface heating plate
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US5223290A (en) * 1991-08-13 1993-06-29 G. S. Blodgett Corporation Method for cooking food in an infra-red conveyor oven
US6157002A (en) * 1998-02-06 2000-12-05 Middleby Cooking Systems Group Small conveyor toaster/oven
US20030015518A1 (en) * 2001-04-19 2003-01-23 Baker Richard L. Cooking oven incorporating accurate temperature control and method for doing the same
US20040182849A1 (en) * 2003-03-21 2004-09-23 Samsung Electronics Co., Ltd. Cooking apparatus
US20060157479A1 (en) * 2004-12-14 2006-07-20 Enodis Corporation Impingement/convection/microwave oven and method
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