EP4297608A1 - Lunchbox - Google Patents
LunchboxInfo
- Publication number
- EP4297608A1 EP4297608A1 EP21709480.4A EP21709480A EP4297608A1 EP 4297608 A1 EP4297608 A1 EP 4297608A1 EP 21709480 A EP21709480 A EP 21709480A EP 4297608 A1 EP4297608 A1 EP 4297608A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- lunch box
- box according
- shell
- heating element
- lid
- 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.)
- Pending
Links
- 238000010438 heat treatment Methods 0.000 claims abstract description 47
- 239000007788 liquid Substances 0.000 claims abstract description 5
- 239000007787 solid Substances 0.000 claims abstract description 4
- 235000013305 food Nutrition 0.000 claims description 19
- 238000009413 insulation Methods 0.000 claims description 9
- 239000011888 foil Substances 0.000 claims description 8
- 230000003287 optical effect Effects 0.000 claims description 3
- 235000011837 pasties Nutrition 0.000 claims description 3
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 238000005485 electric heating Methods 0.000 claims description 2
- 238000007789 sealing Methods 0.000 claims 2
- 230000000284 resting effect Effects 0.000 claims 1
- 239000000463 material Substances 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 238000001816 cooling Methods 0.000 description 4
- 239000004033 plastic Substances 0.000 description 4
- 239000006260 foam Substances 0.000 description 3
- 239000004743 Polypropylene Substances 0.000 description 2
- 238000010292 electrical insulation Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 238000005192 partition Methods 0.000 description 2
- 229920001155 polypropylene Polymers 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 235000008452 baby food Nutrition 0.000 description 1
- 235000008429 bread Nutrition 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000012459 cleaning agent Substances 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000035622 drinking Effects 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 210000004251 human milk Anatomy 0.000 description 1
- 235000020256 human milk Nutrition 0.000 description 1
- 238000007373 indentation Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 235000012054 meals Nutrition 0.000 description 1
- 229920003223 poly(pyromellitimide-1,4-diphenyl ether) Polymers 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- -1 polypropylene Polymers 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 235000015504 ready meals Nutrition 0.000 description 1
- 235000021487 ready-to-eat food Nutrition 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 238000001931 thermography Methods 0.000 description 1
- 235000013311 vegetables Nutrition 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A45—HAND OR TRAVELLING ARTICLES
- A45C—PURSES; LUGGAGE; HAND CARRIED BAGS
- A45C11/00—Receptacles for purposes not provided for in groups A45C1/00-A45C9/00
- A45C11/20—Lunch or picnic boxes or the like
-
- A—HUMAN NECESSITIES
- A45—HAND OR TRAVELLING ARTICLES
- A45C—PURSES; LUGGAGE; HAND CARRIED BAGS
- A45C13/00—Details; Accessories
- A45C13/005—Hinges
-
- A—HUMAN NECESSITIES
- A45—HAND OR TRAVELLING ARTICLES
- A45C—PURSES; LUGGAGE; HAND CARRIED BAGS
- A45C15/00—Purses, bags, luggage or other receptacles covered by groups A45C1/00 - A45C11/00, combined with other objects or articles
Definitions
- the present invention relates to a lunch box for storing, transporting and heating food in solid, pasty or liquid form, in particular food prepared for consumption.
- Two-part cans made of metal or plastic are known with a hinged lid or with a lid that can be placed on it, with a large lower part for a main meal or with an overlapping upper and lower part of approximately the same size for bread or the like.
- One- or two-piece disposable containers, mostly made of foam, are used in retail, mostly to offer ready-to-eat portions of fruit, vegetables or ready meals.
- DE 202013010997 U1 discloses a collapsible container which is designed in such a way that no objects can fall out when an upper shell is opened.
- the collapsible container consists of an upper shell and a lower shell on a
- the upper shell has an upper inner cover and the lower shell has a lower inner cover, so that the two inner volumes can be closed completely and independently of one another.
- a cover closure is provided on the side opposite the articulation of the inner cover, in the form of a locking lug in the upper shell and the lower shell.
- Another lunch box made of plastic for storing food is disclosed in DE 10157494 B4. It consists of a container with side walls, a base and a molded lid. An additional chamber is arranged on the underside of the container, which can be closed with an additional cover. The lid and additional lid are connected to the container via a film hinge.
- Another container with a lid for storing food media contains an exothermic heating element according to EP 0412159 Bl.
- the container includes an upper inner container for the materials to be heated and a lower inner container located underneath, which contains water and an exothermic material, the lower inner container with is provided with a cover.
- the container also includes a device that can be operated from the outside for contacting the exothermic material with the water.
- the cover of the lower inner container is vapor permeable but impermeable to the exothermic material.
- a transportable lunch box is known from WO 2011/112284 A1.
- the lunch box comprises an upper shell and a lower shell, which are connected to one another so that they can be folded on one long side, with a closure being provided on the opposite long side.
- a pivotable divider tray is provided to form an upper and lower chamber for receiving edibles.
- a tray can be inserted into the lower chamber, which can also be loaded with a cooling or heating gel in order to be able to temporarily keep food at a certain temperature.
- GB 2056264 A shows a conventional lunch box for keeping food warm for use in kitchens or catering, with a lid which is hinged to the box and can be locked by means of a safety catch.
- a power connection is provided, with the heating element being a conventional heating wire, which only allows the food to be heated from below.
- an inner container that can be closed with a lid can be inserted into the lower shell.
- Indentations for cutlery are formed in the upper shell.
- the lower shell is provided with a power connection for a heating element in the lower shell,
- US 2015/0245723 A1 discloses drinking vessels that can be actively heated or cooled. These have a cylindrical outer shell with a closed bottom in the form of a partition. The upper cover surface can be closed with a lid. A heatable and double-walled cylinder (inner cylinder) is provided in the outer shell.
- the power is supplied by means of integrated batteries in a false floor below the partition wall, which also contains a battery control system.
- the object of the invention is now to provide a lunch box which overcomes the disadvantages of the prior art and which is easy to handle.
- the lunch box comprises a lid and a housing that can be connected to one another. It has an electrical heating element, a device for supplying electricity and for controlling the power supply and operating modes, and a sensor arrangement for controlling the temperature of the heating element.
- the lunch box according to the invention is suitable for storing, transporting and heating or cooling food in solid, pasty or liquid form, in particular ready-to-eat food.
- the food can also be in flat plastic bags, glass containers or the like.
- the lunch box according to the invention can thus be used flexibly.
- the lunch box is applicable for adult, child or baby food.
- FIG. 1 a lunch box according to the invention
- FIG. 2 the lunch box according to FIG. 1 in a different representation
- FIG. 3 a further embodiment of the lunch box according to FIG. 1;
- Fig. 4 the lunch box according to Fig. 2 in a different representation.
- a lunch box 20 according to the invention (Fig. 1, 2) comprises, for example, a lid in the form of an upper shell 1 and a housing in the form of a lower shell 2, each made of plastic and/or metal, for example polypropylene (PP), with the upper shell 1 acts as a removable lid.
- the upper shell 1 and the lower shell 2 can be connected to one another.
- a snap fastener 4 (or snap fastener) on one long side of the lunch box, with the
- a film hinge can also be provided (molded onto one long side) or a rotary joint hinge that is fastened to the upper and lower shell, or similar. As a result, the upper shell 1 could be opened.
- the upper shell 1 and the lower shell 2 lie flat in a parting plane and possibly overlap one another with an overhang of the upper shell 1 .
- a Stroman connection socket 5 is provided, which can be designed in the form of conventional Ste cker as well as a USB port to provide the connection to a charging station 21 or a power supply forth.
- a power connection socket 5 can also be provided in the upper shell 1 .
- flat rechargeable batteries can also be arranged in the lower shell 2 .
- An LED 6 is also arranged on the opposite side wall of the lower shell 2 as a status display (heating) and possibly as a temperature indicator 23 .
- a status display heating
- a temperature indicator 23 possibly as a temperature indicator 22 .
- the upper shell 1 there can also be a pressure equalization element, not specified, for extracting warm air and water vapor.
- Part of the lunch box 20 can still be used at least one resp. be removable shell 9 for receiving a food to be heated or to be cooled.
- the shell 9 is formed, for example, from an aluminum material or from stainless steel with a thickness of 0.5 mm and is arranged in the lower shell 2 .
- the shell 9 has an L-shaped and angled edge region 8, wherein between the edge region 8 and the lower shell 2, a seal 10 can be attached.
- the shell 9 can also be flat, for example for holding liquids in flat dispenser bags of, for example, 180 ml content. This means that breast milk can also be sterile and without
- the lower shell 2 can also be designed with higher walls, so that several shells 9 can be arranged one above the other.
- the shell 9 can be easily removed from the lower shell 2 for cleaning or other purposes.
- a fixed arrangement of the shell 9 in the lower shell 2 would be possible, for example by means of an adhesive bond or the like. Insertable or fixed shells 9 without thermal insulation are also possible.
- the shell 9 and the lower shell 2 are adapted to each other in their design and shape, respectively. coordinated.
- differently shaped shells 9 can be used in detail, respectively. be used in the lower shell 2.
- the height of the lunch box 20 can be adjusted to the height of the shell 9, so that both high and flat lunch boxes can be produced.
- Thermal insulation 11 for example made of PUR integral foam, can be provided between the inner wall of the lower shell 2 and the shell 9, with a sensor-controlled electric heating element 12 with a heating foil being attached between this and the shell 9, in the example . This enables the heating (or cooling) to be controlled with precise temperature.
- the thermal insulation 11 could also be formed from a Keraguss S molded part, an airgel molded part or an EPS molded part, air or vacuum.
- Thermal insulation 11 and the heating foil can cover the bottom area of the shell 9 or also at least partially enclose the side walls of the shell 9 .
- the inside of the upper shell 1 can also be provided with such thermal insulation 11 and a heating element 12 .
- the control electronics 13 are arranged, for example, on a flat circuit board, which in turn is plugged into the inner wall of the lower shell 2 to save space.
- the control electronics 13 includes the electronic control, a safety circuit and a load switch.
- the electronic controller 13 should include at least one analog or digital temperature sensor 30, a heating switch (thermal switch 31), and the output for the LED 5 and the temperature indicator 23.
- the electronic control can also allow different heating modes, for example bottom and/or top heat.
- the electronic controller 13 can also grace communicate with an external control device 22, for example a smartphone (24) and controlled via app.
- an external control device 22 for example a smartphone (24) and controlled via app.
- haptic buttons, sensor buttons and/or a display can also be provided on the lunch box 20 itself.
- 9 9103WOPAT1112 be seen in order to be able to make mode and temperature settings on it.
- the sensors 30, 31 are preferably arranged near the outer edge of the shell 9 (FIGS. 1, 2) or attached directly to the edge of the shell.
- an optical sensor, a camera or a thermal imaging camera can be arranged, advantageously in the upper shell 1 above the shell 9, with which the food can be monitored.
- the heating element 12 can also be configured in zones, with each zone being able to be assigned a sensor 30, 31. This enables heating (cooling) to different target temperatures in the individual zones.
- the heating element 12 consists of a metallic heating foil which is embedded between two layers of silicone for electrical insulation.
- Kapton heating foils, polyester heating foils, ceramic heating elements or contact heating elements can also be used.
- the power supply can range from 5V to 240V, including normal tolerances. For example, with 5V or 12V DC, no special safety measures would have to be provided. In a version with 230V AC, the shell 11 would either have to be grounded or the aforementioned double electrical insulation would have to be installed.
- the electrical connections are preferably waterproof.
- the lunch box 20 is connected to the power source to heat a food item and the start button, the LED 6, is activated.
- the LED 5 signals the heating process over a period of time preset in the control electronics 12 by lighting up.
- the heating can also be displayed as a colored temperature indicator 23 by means of an additional LED.
- control electronics switch off the heating foil and LED 5 goes out.
- Other operating modes can be programmed using control unit 22 and the app.
- control electronics 14 locking cams
Landscapes
- Purses, Travelling Bags, Baskets, Or Suitcases (AREA)
- Packages (AREA)
- Cookers (AREA)
Abstract
Description
Claims
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/IB2021/051597 WO2022180423A1 (en) | 2021-02-26 | 2021-02-26 | Lunchbox |
Publications (1)
Publication Number | Publication Date |
---|---|
EP4297608A1 true EP4297608A1 (en) | 2024-01-03 |
Family
ID=74853687
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP21709480.4A Pending EP4297608A1 (en) | 2021-02-26 | 2021-02-26 | Lunchbox |
Country Status (4)
Country | Link |
---|---|
US (1) | US20240225221A9 (en) |
EP (1) | EP4297608A1 (en) |
DE (1) | DE212021000537U1 (en) |
WO (1) | WO2022180423A1 (en) |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2056264A (en) | 1979-07-25 | 1981-03-18 | Broad T | Improvements in lunch boxes |
AU2382288A (en) | 1987-09-17 | 1989-04-17 | Gentoku Kaneko | Heater |
JPH0584110A (en) * | 1991-09-27 | 1993-04-06 | Sansei Kogyo Kk | Lunch box |
DE10157494B4 (en) | 2001-11-23 | 2011-03-24 | Leifheit Ag | Lunchbox |
US20110215097A1 (en) | 2010-03-08 | 2011-09-08 | Archie Jr Willard Nelson | Dual compartment sandwich container and method of making same |
US9814331B2 (en) | 2010-11-02 | 2017-11-14 | Ember Technologies, Inc. | Heated or cooled dishware and drinkware |
DE202013010997U1 (en) | 2013-12-04 | 2014-01-15 | Jelenia Plast Sp. Z.O.O. | folding containers |
CH709678A2 (en) * | 2014-05-21 | 2015-11-30 | Fabian Graf | Lunchbox for storing, transporting and cooking of food. |
CN105852370B (en) * | 2016-03-29 | 2018-07-06 | 深圳市纳美健康科技有限公司 | Lunch box |
CN207940446U (en) * | 2018-01-18 | 2018-10-09 | 王洛斌 | Cold and hot temperature control Multi-function thermal insulation lunch box |
CH716719B1 (en) * | 2019-10-21 | 2022-11-15 | Faitron Ag | lunch box. |
CN111227473A (en) * | 2020-03-08 | 2020-06-05 | 汤斯维 | Bluetooth control by temperature change customization cutlery box |
-
2021
- 2021-02-26 EP EP21709480.4A patent/EP4297608A1/en active Pending
- 2021-02-26 US US18/279,053 patent/US20240225221A9/en active Pending
- 2021-02-26 DE DE212021000537.3U patent/DE212021000537U1/en active Active
- 2021-02-26 WO PCT/IB2021/051597 patent/WO2022180423A1/en active Application Filing
Also Published As
Publication number | Publication date |
---|---|
WO2022180423A1 (en) | 2022-09-01 |
US20240225221A9 (en) | 2024-07-11 |
DE212021000537U1 (en) | 2023-10-05 |
US20240130497A1 (en) | 2024-04-25 |
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Legal Events
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Effective date: 20230824 |
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AK | Designated contracting states |
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