WO2018077466A1 - Système de thermorégulation et four destiné à thermoréguler des plats dans un véhicule, support de réception de contenants alimentaires et procédé de thermorégulation de plats dans un véhicule - Google Patents

Système de thermorégulation et four destiné à thermoréguler des plats dans un véhicule, support de réception de contenants alimentaires et procédé de thermorégulation de plats dans un véhicule Download PDF

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Publication number
WO2018077466A1
WO2018077466A1 PCT/EP2017/001215 EP2017001215W WO2018077466A1 WO 2018077466 A1 WO2018077466 A1 WO 2018077466A1 EP 2017001215 W EP2017001215 W EP 2017001215W WO 2018077466 A1 WO2018077466 A1 WO 2018077466A1
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WO
WIPO (PCT)
Prior art keywords
frame
furnace
heating
coil
food
Prior art date
Application number
PCT/EP2017/001215
Other languages
German (de)
English (en)
Other versions
WO2018077466A8 (fr
Inventor
Uwe Dieter Weigele
Original Assignee
Uwe Dieter Weigele
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 Uwe Dieter Weigele filed Critical Uwe Dieter Weigele
Priority to EP17787108.4A priority Critical patent/EP3532381A1/fr
Publication of WO2018077466A1 publication Critical patent/WO2018077466A1/fr
Publication of WO2018077466A8 publication Critical patent/WO2018077466A8/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64D—EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENTS OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT
    • B64D11/00—Passenger or crew accommodation; Flight-deck installations not otherwise provided for
    • B64D11/04—Galleys
    • 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
    • H05B6/02—Induction heating
    • H05B6/10—Induction heating apparatus, other than furnaces, for specific applications
    • H05B6/12—Cooking devices
    • H05B6/129—Cooking devices induction ovens

Definitions

  • the present invention relates to a temperature control system for temperature control of food in a vehicle, in particular in an aircraft, and a corresponding oven for temperature control of food in a vehicle, a suitable for the oven rack for holding food containers and a corresponding method for controlling the temperature of food in a vehicle.
  • Such a rack which has standardized dimensions, is also called a "rack.” It has however, it has been shown that the different areas of the rack inside the oven are not always heated evenly, so that some foods have too high and others too low a temperature. Furthermore, a specifically different heating of different foods, which are to be heated for different periods of time or served at different temperatures, is not possible in this case. Finally, the energy consumption of such a furnace is often disproportionately high.
  • an electric system for food service devices comprising a carriage which can be placed in a refrigerator and which has heating elements for heating the food containers received in compartments of the cart.
  • Each compartment contains three flat heating elements, on which a food container rests.
  • a coupling with a plug connection is provided on a rear wall of the car.
  • such a connector is difficult to clean and therefore not optimal for use in particular in an aircraft.
  • an aircraft induction furnace has a housing into which plates, which each have at least one inductor, are inserted can.
  • Each plate is associated with an aircraft induction furnace excitation assembly, each having ports for connecting one or more inductors. All aircraft induction furnace excitation arrangements are connected to a common control. Trays of food for heating can be placed on the plates.
  • DE 10 2007 004 275 A1 discloses a consumer unit for converting inductively transmitted electrical energy, which comprises at least one secondary coil for receiving energy from an alternating electromagnetic field.
  • the secondary coil is electrically connected to at least one consumer.
  • the consumer unit is designed as an exchangeable module for an induction furnace.
  • the designed as heating elements consumers can be realized as structured conductive areas in food containers.
  • the primary coil is arranged in a housing, inside which there is a ferrite, which extends over a bulge in the housing and a recess in the back of the consumer unit into the interior of the secondary coil.
  • An inventive temperature control system is designed for the temperature control of food in a vehicle, for example in an aircraft, and is particularly suitable for use in a passenger cabin of the vehicle or the aircraft.
  • the tempering system is preferably designed for tempering, in particular for heating, prepared meals in food containers. Such ready meals are usually delivered refrigerated and are heated to a desired temperature before being served. The heating of a prepared, cooled food is also referred to as "regeneration.”
  • the temperature control system according to the invention comprises a frame, which is usually referred to as a "rack” and which is in particular box-shaped and has a plurality of levels for receiving food containers.
  • the frame typically has standardized dimensions and can be designed, for example, as a carriage which has a plurality of rollers on its underside.
  • the rack may be loaded with the food containers and may be provided, for example, by a utility (caterer) having a desired number and type of food containers and foodstuffs contained therein.
  • the planes on which the food containers can be arranged are designed, for example, as shelf compartments or as horizontal plates or else drawer-like, wherein the shelf compartments or plates or drawers can be displaceable and / or individually removable or also fixedly arranged in the rack could be. In the spaces between the superimposed planes, the food containers can be accommodated.
  • the frame can essentially consist of stainless steel.
  • the food containers, which receive the food may be open or closed and be designed, for example, as plates, bowls or other dishes or even, for example, as aluminum or plastic trays.
  • the tempering system further comprises an electrically operable oven, which is connectable to an on-board network of the vehicle, such as the AC electrical system of an aircraft that provides three-phase current with a voltage of 115 V, for example.
  • the oven has an internal space which is designed to receive the rack.
  • the frame can be inserted with the food containers arranged on the levels in the oven.
  • the furnace has at least one transmitting coil (primary coil) and the frame has at least one receiving coil (secondary coil), which, when the frame is in the interior of the furnace, cooperate for transmitting electrical energy from the furnace to the frame.
  • the transmitting coil and the receiving coil in an operating position of the frame in the interior of the furnace can be arranged opposite each other with a small distance. In the operating position of the frame can thus receive the receiving coil electrical power by inductive energy transfer from the transmitting coil.
  • the furnace has a plurality of transmitting coils and the frame has a plurality of receiving coils, which can be pairwise associated with each other and in pairs in the operating position of the frame can be arranged opposite each other.
  • the at least one transmitting coil and the at least one receiving coil may have ferrite cores and / or be accommodated in a ferrite pot open on one side, wherein the ferrites may be applied, for example, to slotted metal sheets or to printed circuit boards with a slotted copper plane that the magnetic field is not shorted as possible and the radiated electric field is captured;
  • EMC electromagnetic compatibility
  • the at least one transmitting coil and the at least one receiving coil for an inductive energy transmission with an operating frequency below about 150 kHz, in particular in the range of 0.8 to 150 kHz, more preferably in the range of about 70 kHz, are designed to disrupt electronic systems of the vehicle, especially if this is an aircraft exclude.
  • the frame has at least one heating element.
  • the at least one heating element may be operated to heat at least a portion of the rack or even one or more food containers housed in the rack or one or more portions of the food container; In the following, the food container and a region of the food container will also be understood as an area of the frame.
  • the heating element is supplied by the at least one receiving coil with electrical energy and is for this purpose connected to the at least one receiving coil via at least one electrical line.
  • the frame comprises a plurality of heating elements arranged in different regions of the frame, for example, a plurality of planes may each comprise one or more heating elements.
  • the heating elements may be approximately evenly or unevenly distributed in the volume occupied by the rack or the interior of the oven when the rack is in the operative position.
  • the frame has at least one heating element which can be supplied with electrical energy via the transmitting coil of the oven and the receiving coil of the frame, a targeted heating of a desired range of the frame is made possible, the required heating power from the oven to the frame via a easy to create, largely insensitive to interference and easy to clean compound is done.
  • at least one region of the frame can be heated by the at least one heating element assigned to the frame, targeted heating of the food containers arranged in the region is possible, and thus a particularly uniform heating of the food containers or by a corresponding arrangement of heating elements in the frame. if desired, a deliberately different heating of different food containers.
  • the fact that the heating power is converted by the heating element, which is connected to the at least one receiving coil, for example via an electrical line, an arrangement of the heating element or more heating elements allows, which is largely independent of which area of the frame, the at least a receiving coil is arranged.
  • the oven preferably has a door for closing the interior of the oven. It can be provided that the oven can only be put into operation and heating of the food only then takes place when the door is closed.
  • the door of the oven may have a gasket made of an electrically conductive material so that the interior can be closed in the manner of a Faraday cage. In this way, a safe operation of the furnace can be achieved with the lowest possible interference radiation.
  • the furnace may comprise an electronic control device, which is set up to control the at least one transmission coil and which may be designed for connection to a data network of the vehicle.
  • the electronic control device is arranged in particular in a region of the furnace, which is not exposed to significant thermal stress during operation of the furnace.
  • the frame can also comprise electronic components or a control device.
  • the at least one heating element is designed according to a preferred embodiment as a resistive heating element.
  • a heating element which can also be referred to as a resistance heating element, comprises at least one heating resistor which converts electrical energy into heat.
  • the heating resistor can be formed for example by a heating foil. With at least one resistive heating element, heating of the food can be achieved in a particularly simple manner, with no special requirements being placed on the food containers as a rule.
  • the at least one heating element is designed as an inductive heating element and in particular has a coil for an inductive energy transmission. If a food container associated with the heating element is suitable for induction heating and, for example, has an electrically conductive bottom, direct heating of the food container and thus particularly efficient heating can be achieved in this way. Mung the food can be achieved.
  • the heating element can also be designed for an inductive energy transfer to a holding plate or a warming plate, which has an inductively acting energy receiving device, which is designed to supply a receptacle for food with energy for tempering the food; such a holding plate or such a hot plate may in particular be designed as described in German Patent Application No. 10 2015 016 317.5, which is incorporated herein by reference in the present application.
  • the at least one heating element is designed both as a resistive and as an inductive heating element and comprises both a heating resistor and an induction coil.
  • the frame may comprise differently shaped heating elements, for example at least one resistive heating element, at least one inductive heating element and / or at least one heating element, which is designed both for a resistive and for an inductive heating.
  • the at least one transmitting coil can in principle be arranged in any area of a wall of the inner space, and the at least one receiving coil can in principle be arranged in any area on an outer side of the frame, the position and orientation of the at least one transmitting coil and the at least one receiving coil being such are selected such that they are arranged opposite one another in an operating position of the frame, so that an inductive energy transfer from the at least one transmitting coil to the at least one receiving coil is made possible.
  • the operating position of the rack is one in which the rack is located in the interior of the oven and the oven can be operated with the rack for heating the dishes; if the oven has a door, in the operating position of the rack, the door of the oven can be closed.
  • the operating position can be achieved, for example, by inserting the frame into the interior up to a stop and can be determined by the dimensioning of the interior and of the frame.
  • the at least one transmitting coil is arranged on a ceiling of the inner space, and the at least one receiving coil is arranged on an upper side of the frame.
  • the frame may have a height which corresponds almost to the clear height of the interior, and largely fill the interior of the furnace. In this way, the at least one transmitting and receiving coil when inserting the frame into the oven can be brought into a mutually opposite arrangement in a simple manner to allow transmission of electrical power for the heating element or elements from the oven to the frame.
  • the furnace and / or the frame are formed such that the at least one transmitting coil is lowered during or after the insertion of the frame into the furnace to reduce the distance to at least one receiving coil and in particular in the operating position to an air gap with a predetermined width to reach.
  • the oven and / or the frame may be formed such that the at least one receiving coil of the rack is raised accordingly during or after the insertion of the frame;
  • the rack can be raised as a whole, or it can be held movably on the rack and raised accordingly.
  • the floor of the interior may have corresponding ramps or a lifting mechanism may be provided which raises the rack or the at least one receiving coil during or after insertion of the rack into the oven, or it may be a lowering mechanism for lowering the at least one transmitting coil may be provided.
  • the lifting or lowering mechanism can be set in motion, for example, by switching on the furnace or by closing the door. In this way, on the one hand a simple insertion of the rack can be made possible in the interior and on the other hand, then a predetermined air gap can be achieved.
  • corresponding spacers or covers may be provided on the transmitting and / or receiving coils. The fact that there is a suitably selected, predetermined distance or air gap between the at least one transmitting and the at least one receiving coil, the magnetic coupling between the transmitting and Reception coils optimized and an efficient and interference-insensitive energy transmission are possible.
  • the at least one transmitting coil are arranged on a bottom of the inner space and the at least one receiving coil is arranged on an underside of the frame. Since the frame is in the operating position on the floor of the interior and is pressed by its own weight on this, it can be achieved in this embodiment by the direct contact of the frame with the ground or by appropriate spacers in a simple manner that in the Operating position there is a defined distance between the transmitting and receiving coils; the transmitting and / or the receiving coil can be sunk into the bottom of the interior or in the bottom of the frame. This also allows both a simple introduction of the rack in the oven and an optimal magnetic coupling for an efficient and interference-insensitive energy transfer possible.
  • the inductive energy transfer to a not designed as a frame tempering be possible, for example, to a coffee or teapot with built-in receiver coil, placed on the bottom of the interior of the furnace and there, for example, by corresponding pins of Temper michsvorraum and holes in the bottom of the interior of the Furnace can be centered and locked.
  • the at least one transmitting coil can be arranged on a side wall or a rear wall of the furnace or also on the inside of the door of the furnace, and the at least one receiving coil can be arranged on a corresponding side of the frame.
  • the furnace and the frame for a multi-phase inductive energy transfer in particular for a three-phase energy transfer, be formed.
  • a corresponding number of transmission and reception be provided coils, for example, three transmitting coils with three corresponding, in the operating position of the rack respectively opposite receiving coils.
  • the frame has a plurality of electrical heating elements and they are connected to the receiving coils in such a way that during operation the different phases are loaded as evenly as possible.
  • the multiphase inductive transmission enables a largely continuous energy flow and due to the lower ripple currents a reduction of the interference radiation.
  • the frame comprises a plurality of heating elements which are independently operable.
  • a plurality of channels is provided for the inductive energy transmission from the oven to the rack, for example a plurality of respectively associated transmitting and receiving coils, wherein the transmitting coils can be supplied with energy independently of each other and the receiving coils respectively are connected to a heating element or a group of heating elements.
  • the channels can also serve a multi-phase, for example, a three-phase, energy transfer.
  • the individual heating elements or groups of heating elements which can be operated independently of one another can be arranged within the frame in such a way that they are heated by a first heating element or a first group of heating elements in a first region and by a second heating element in a second region or a second group of heating elements takes place.
  • the first and the second region can be heated differently.
  • the heating elements can be operated such that only a part of the frame is heated; if this is not fully loaded, therefore, the energy consumption can be reduced in this way.
  • the heating elements of a first group can be placed in such a way that with a corresponding loading of the rack with food containers, these are arranged where a particularly intensive heating is desired, and where no or less heating is desired, none or the heating elements of a second are arranged independently of the first controllable group.
  • the at least one heating element preferably has a temperature monitoring device.
  • the at least one heating element is a resistive heating element
  • the temperature monitoring device monitors the temperature of a heating resistor or a temperature of the surroundings of the heating element.
  • it may also be associated with an inductive heating element, a temperature monitoring device which monitors, for example, a temperature of the environment of the heating element.
  • the temperature monitoring device may be assigned to a group of heating elements, a region of the frame or even a single heating element.
  • the temperature monitoring device can be designed, for example, to switch off the heating element when a predetermined temperature is exceeded. In this way, overheating of the heating element or heated by the heating element of the rack can be avoided, for example, in the case that there is no food container in the region of the heating element, which receives the heat energy generated, or even in the case entire interior of the stove becomes too warm.
  • the temperature monitoring device can also be designed as a thermostat, which is set to achieve a desired temperature.
  • a particularly homogeneous temperature in the entire interior of the furnace can be achieved because of the thermostats in colder areas automatically more intensive heating takes place, and hotter areas are heated with lower heat output.
  • the rack comprises predefined areas with different setpoint temperatures, to which the thermostats arranged in the respective areas are set. This allows each adapted heating of food with different temperature requirements, which can be arranged in the corresponding areas.
  • the furnace additionally has a device for heating the interior by means of hot air and / or steam heating.
  • the hot air or steam heating device can be designed in a manner known per se and serve to heat the interior of the furnace and thus to heat the food.
  • the transmitting coil is received in a withdrawable from the oven slot.
  • the transmitting coil is connected to the electrical system and can be used to transfer the electrical energy to the frame.
  • a plug connection can be provided on the rear side of the insert; the connector can be designed so that in addition to the electrical power and data can be transmitted.
  • the drawer can also be electronic assemblies which are used to operate the transmission serving as a spool.
  • the furnace has a device for detecting identification and / or filling data of the frame.
  • the identification data may, for example, contain information as to whether the frame has a receiver coil for interacting with the at least one transmission coil of the oven, or whether the frame is a conventional rack which is not designed for inductive energy transmission from the oven to the frame. Furthermore, the identification data may contain information about dimensions or the maximum possible filling of the frame.
  • the tempering system may comprise a plurality of different racks, which may be identified by means of the identification data.
  • the fill data may include information about the actual filling of the rack with food and about the heating requirements of the food.
  • the oven according to this embodiment of the invention is preferably designed for driving the at least one transmitting coil in dependence on the detected identification or filling data.
  • the furnace in particular an electronic control device of the furnace, may be arranged such that, if the frame is identified as a conventional rack, there is no electric power applied to the transmitting coil and instead heating of the rack by the hot air and / or or steam heating of the furnace takes place.
  • the furnace or an electronic control device can be set up in order, depending on the detected filling data, to move the at least one transmitting coil according to a heating operation according to the quantity, the temperature requirements and / or the heating times of the food in the rack. It may be provided that due to the filling data arranged in different areas of the rack meals are delayed or heated to different temperatures and / or heated in a partially filled rack only the filled areas. As a result, an energy-efficient and adapted to the particular food heating is possible.
  • the rack may have a data carrier, such as a barcode or an RFID chip, and the oven a corresponding reading device.
  • the data carrier may have been attached or provided with the data during the filling of the rack.
  • the furnace detects the design of the frame introduced into the furnace by a load behavior of the frame. For example, from the power consumption or the inductive behavior of the transmitting coil can be closed to the presence of a matched receiver coil and the transmitting coil and a heater of the furnace are operated accordingly.
  • at least one heating element of the frame has a temperature monitoring device, it can be concluded from a temperature shutdown and a corresponding load shedding on the heating requirements and the transmitting coil and optionally a heating device of the furnace can be operated accordingly.
  • the rack has a first monitor inductance that carries at least a portion of the current flowing through the at least one receiving coil
  • the oven has a second monitor inductance that is magnetically coupled to the first in the operating position of the rack in the oven.
  • the inductances of said components are preferably small compared to the inductances of the transmitting and the receiving coil.
  • the voltage or the current through the second monitor inductance is a measure of the current flowing in the rack or in the at least one heating element.
  • the furnace in particular an electronic control device of the furnace, according to this embodiment can preferably be set up in accordance with the voltage or the current of the second monitor inductance to control at least one transmission coil.
  • the monitor inductors can thus be used to detect whether the rack has a correspondingly tuned receiver coil at all, and to control the at least one transmit coil accordingly, as well as to adapt the power supply to different racks and to monitor the current flow in the rack.
  • the furnace designed accordingly that the complex resistance of the at least one transmission coil can be determined for monitoring the output power or for monitoring whether there is even a receiving coil. It can be concluded from the real part of the delivered active power and from the imaginary part on the coupling and also on the injected impedance.
  • the determination of the complex resistance can be done for example by measuring the standing wave ratio at the at least one transmitting coil using a directional coupler.
  • An inventive oven for temperature control of food in a vehicle, in particular in an aircraft, is electrically operable and connectable to an electrical system of the vehicle.
  • the oven has an interior for receiving a particular box-shaped frame, which is designed to hold food containers, which contain the food to be tempered, in particular to be heated.
  • the furnace comprises at least one transmitting coil for inductively transmitting electrical energy to at least one receiving coil of the frame.
  • the furnace is designed in particular as described above and is suitable as the furnace of the temperature control system described above for controlling the temperature of food in a vehicle.
  • An inventive rack or rack for receiving a plurality of food containers may be formed substantially box-shaped and comprise a plurality of superimposed planes for receiving the food container.
  • the frame has at least one receiving coil for inductively receiving electrical energy, in particular at least one transmitting coil of a furnace, and at least one heating element for heating at least one Area of the rack.
  • the at least one heating element is connected to the energy supply to the at least one receiving coil via an electrical line.
  • the frame is designed in particular as described above and suitable as a frame of the previously described Temper michssystems for temperature control of food in a vehicle and adapted to cooperate with the above-described oven for heating the food.
  • a rack which is equipped with food containers containing the food to be tempered, introduced into the interior of an electrically heated oven or the frame, the already in the interior, is equipped with the food containers.
  • the furnace has at least one transmission coil for the inductive transmission of electrical energy
  • the frame has at least one appropriately tuned receiver coil for the inductive reception of electrical energy.
  • the frame is or is introduced into the interior of the furnace such that the at least one transmitting coil and the at least one receiving coil are arranged opposite one another at a defined distance. Then, the transmitting coil is operated to transmit electric power.
  • the electrical energy received by the receiving coil is transmitted via electrical lines to at least one resistive or inductive heating element of the frame and the at least one heating element is operated to heat at least one region of the frame. It may be provided that, when inserting the frame into the oven, a design of the frame and / or an assembly detected and the transmitting coil is automatically operated in accordance with adapted manner.
  • the method according to the invention is carried out with a furnace and a frame, which are designed as described above.
  • Figure 2 shows a furnace according to an embodiment of the invention, seen obliquely from below.
  • FIG. 3 shows a rack according to a first embodiment of the invention, viewed obliquely from above;
  • FIG. 4 shows a rack according to a second embodiment of the invention, viewed obliquely from above;
  • FIG. 5 shows a rack according to a further embodiment of the invention, seen obliquely from above;
  • Fig. 6 shows a transmitting and a receiving coil unit in an enlarged, cutaway view.
  • a furnace of conventional design for heating food is shown, which are accommodated in a conventional rack 2.
  • the furnace 1 has side walls 3, 4, a rear wall 5, a bottom 6 and a head part 7, which enclose an inner space 8 and are each made insolating.
  • the interior 8 can be closed with a door 9, which has a seal 10.
  • display elements 1 1 and controls 12 are arranged.
  • the rack 2 comprises a plurality of superimposed planes for receiving food containers, which are designed as drawers 13.
  • the food containers, not shown in Fig. 1 are placed in the drawers 13 and arranged in or over the openings 14.
  • a slot 15 can be inserted, which includes three transmitting coils 16 which can be operated to generate an alternating field.
  • the transmitting coils 16 are arranged sunk on the underside of the insert 15, which forms the ceiling of the inner space 8 when inserted into the oven 1 insertion.
  • the insert 15 On its rear side, the insert 15 has a plug which, upon insertion of the insert 15, engages in a corresponding socket 17 on the rear wall 5 of the furnace 1 and thereby electrically connects the coils 16 to a power supply and to an electronic component arranged in the head part 7 Control device of the furnace 1 produces.
  • the furnace 1 is formed like the conventional furnace 1 'shown in FIG. 1, and may also include hot air and / or steam heating.
  • a first embodiment of a rack is shown, which is designed for introduction into the furnace 1 shown in FIG. 2 and for energy absorption from the alternating field generated by the transmitting coils 16.
  • three receiving coils 22 are arranged at the top of the rack 20, sunk into the cover plate 21.
  • the receiving coils 22 reach a position below a respective transmitting coil 16, wherein the remaining distance between the mutually associated transmitting coils 16 and receiving coils 22 is selected such that an efficient energy transfer take place can.
  • the receiving coils 22 are connected via electrical lines, not shown, with heating elements of the rack 20, which are formed in the embodiment shown in FIG. 3 as heating plates 23 with heating resistors contained therein.
  • the receiver coils 22 may form three separately controllable energy transmission channels, each with a group of heating elements, namely the heating plates 23, are connected and allow independent operation of the groups of heating elements.
  • the heating plates 23 are arranged on carrier planes, in the example shown on carrier plates 24, wherein in each case a carrier plate 24 is arranged under a respective drawer 13.
  • the carrier plates 24 are permanently installed in the rack 20.
  • the heating plates 23 are arranged on the support plates 24 at the openings 14 of the drawers 13 corresponding positions. If a respective drawer is pushed into the rack 20 up to a stop, there is thus in each case one heating plate 23 under an opening 14. As indicated in FIG. 3, however, not every breakthrough 14 must be assigned a heating plate 23. Thus, among the "left" rows of openings 14 'no heating plates 23 are provided.
  • the food container comprising several compartments for different food, can in this case be provided in such a manner in the drawer 13, that stronger to be heated food on the "right” set breakthroughs 14 while less or unheated food is placed on the "left” apertures 14.
  • the rack 20 is formed like the conventional rack 2, and more specifically, has the same dimensions arranged, which is also sunk in the cover plate 21.
  • FIG. 4 shows a further embodiment of a rack, which is likewise designed to be introduced into the furnace 1 shown in FIG. 2 and to absorb energy from the alternating field generated by the transmitting coils 16.
  • a rack 30 which is likewise designed to be introduced into the furnace 1 shown in FIG. 2 and to absorb energy from the alternating field generated by the transmitting coils 16.
  • an inductive heating of the food container is provided.
  • a plurality of induction coils 31 are arranged in a respectively below a drawer 13 level, which come to rest in a corresponding manner as the heating plates 23 in the embodiment of FIG. 3 in the retracted position of the drawer 13 below a breakthrough 14.
  • the induction coils 31 are connected via electrical lines, not shown, with the receiving coils 22. Asked on the drawer 13 through the apertures 14, designed for the induction heating food containers are heated inductively during operation of the furnace 1.
  • the rack 30 is designed like the previously described rack 20. det. Here, too, it may be provided that only among some openings 14 heating elements, namely the induction coils 31 are arranged, but not among other openings 14 '. Likewise, the three receiving coils 22 also form here three independent energy transmission channels for independent operation of three groups of induction coils 31.
  • FIG. 5 another embodiment of a rack according to the invention is shown.
  • a single-channel energy transfer via a single receiving coil 41 is provided in this rack 40 .
  • the receiving coil 41 can have a plurality of windings.
  • An oven configured to operate with the rack 40 may be formed with three transmitting coils 16 according to the embodiment shown in FIG. 2 or may comprise only a single transmitting coil which is disposed opposite the receiving coil 41 in the operating position of the rack 40.
  • FIGS. 2 to 5 for the sake of clarity, only the transmitting coil 16 and the receiving coil 22 are shown by a transmitting coil unit of the furnace 1 and a receiving coil unit of the rack 20, 30, 40.
  • the transmitting coil unit 50 has a metal housing 51 for shielding electromagnetic fields, in which the further components are arranged.
  • the transmitting coil 16 is received in a cover 52, which also serves to fix the transmitting coil 16.
  • the cover 52 must be sufficiently heat resistant, should be washable and should affect the magnetic and electric field as little as possible. Suitable materials for this purpose are for example glass, porcelain, Kapton, Teflon or a mixture of Teflon and glass fabric, as it is known for high-frequency circuit boards.
  • the cover 51 and thus the transmitting coil 16 is supported by a ferrite plate 53, which directs the alternating field generated by the transmitting coil 16 in the direction of the receiving coil unit 60.
  • a circuit board 54 is arranged, which carries on its underside a plurality of metal strips 55, which serve to shield the electric field and are electrically connected to the metal housing 51.
  • the cover 52 with the transmitting coil 16, the ferrite plate 53 and the circuit board 54 with the metal strips 55 are received in a Ferrittopf 56 to shield the magnetic field.
  • the ferrite pot 56 can also be formed, for example, by a ferrite foil, whereby an improvement of the coil coupling and the electromagnetic compatibility can be achieved. Furthermore, a local ground can be provided via a capacitance to dissipate interference currents.
  • the receiving coil unit 60 is formed in a similar manner as the transmitting coil unit 50.
  • the receiving coil unit 60 is disposed in the operating position opposite to the transmitting coil unit 50, with the individual components being respectively reversed.
  • an air gap 57 remains, the width of which is dimensioned in such a way that energy transfer from the transmitting coil 16 to the receiving coil 22 is as efficient as possible.

Abstract

La présente invention concerne un système de thermorégulation permettant la thermorégulation de plats dans un véhicule, en particulier dans un aéronef, comprenant un support de réception de contenants alimentaires et un four (1) pouvant fonctionner électriquement, doté d'un espace intérieur (8) pour recevoir le support, le four (1) comportant au moins une bobine d'émission (16) et le support comportant au moins une bobine de réception (22), lesquelles coopèrent pour la transmission inductive d'énergie électrique et le support comportant au moins un élément chauffant, lequel est raccordé à l'au moins une bobine de réception (22) pour l'alimentation électrique. L'invention concerne en outre un four destiné à mettre en température des plats dans un véhicule, un support de réception d'une pluralité de contenants alimentaires et un procédé de thermorégulation de plats dans un véhicule.
PCT/EP2017/001215 2016-10-25 2017-10-16 Système de thermorégulation et four destiné à thermoréguler des plats dans un véhicule, support de réception de contenants alimentaires et procédé de thermorégulation de plats dans un véhicule WO2018077466A1 (fr)

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DE102016012692.2A DE102016012692A1 (de) 2016-10-25 2016-10-25 Temperierungssystem und Ofen zur Temperierung von Speisen in einem Fahrzeug, Gestell zur Aufnahme von Speisenbehältern und Verfahren zur Temperierung von Speisen in einem Fahrzeug
DE102016012692.2 2016-10-25

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US10984203B1 (en) 2020-03-13 2021-04-20 Koninklifke Febriek Inventum B.V. Galley insert configuration by tag

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CN111186581A (zh) * 2019-12-11 2020-05-22 中国人民解放军空军勤务学院 一种机载饮食加热组件
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EP3532381A1 (fr) 2019-09-04
WO2018077466A8 (fr) 2018-07-05

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