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WO2008032135A1 - Boîte-repas chauffée électriquement - Google Patents

Boîte-repas chauffée électriquement Download PDF

Info

Publication number
WO2008032135A1
WO2008032135A1 PCT/IB2006/002507 IB2006002507W WO2008032135A1 WO 2008032135 A1 WO2008032135 A1 WO 2008032135A1 IB 2006002507 W IB2006002507 W IB 2006002507W WO 2008032135 A1 WO2008032135 A1 WO 2008032135A1
Authority
WO
WIPO (PCT)
Prior art keywords
dish
lunch box
lid
chamber
base
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/IB2006/002507
Other languages
English (en)
Inventor
Sylvia Cecilia Noronha
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.)
GOLDWISE TRADING Ltd
Original Assignee
GOLDWISE TRADING Ltd
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 GOLDWISE TRADING Ltd filed Critical GOLDWISE TRADING Ltd
Priority to PCT/IB2006/002507 priority Critical patent/WO2008032135A1/fr
Publication of WO2008032135A1 publication Critical patent/WO2008032135A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
    • A47J36/00—Parts, details or accessories of cooking-vessels
    • A47J36/24—Warming devices
    • A47J36/2483—Warming devices with electrical heating means
    • 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

Definitions

  • the present invention relates to electrically heated lunch boxes and, more particularly but not exclusively, to lunch boxes which are battery-operated allowing food to be heated in places remote from an electricity supply.
  • US patent no. 6 144 016 describes an electrically heated lunch box with a food dish heated by radiant elements which may be powered by a battery.
  • the food chamber is a shallow dish with heating elements surrounding its side walls.
  • a hinged lid covers the dish and the walls and floor of the dish are surrounded by thermal insulation.
  • an electrically heated lunch box including:
  • a lid having an evacuated heat insulating lid chamber for covering the dish.
  • the evacuated lid chamber includes a projecting plug-portion which is received in and closes the mouth of the dish.
  • one part of a magnetic sealing strip is fixed around the periphery of the dish for cooperating with another part of the magnetic sealing strip fixed to around the lid to fasten the Nd.
  • the lunch box preferably a controller for controlling power supply from a battery pack and to the element, the battery pack being mounted in the base below the dish.
  • the controller preferably includes a timing circuit, the lunch box having a user- selectable heating temperature and user-selectable time, such that the controller operates the element to achieve the selected temperature by the selected time.
  • This invention provides a portable electrically heated lunch box which is effective and efficient in operational use, reducing heat loss through the lid while still allowing the device to be economically constructed. Providing the high degree of thermal insulation achieved by this design allows satisfactory heating performance from battery alone.
  • Figure 1 is a schematic side view (including a part section) of the lunch box of the present invention
  • Figure 2 is an enlarged view of detail A of Fig. 1 .
  • Figure 3 is a plan view of the open base of the lunch box of Fig. 1.
  • an electrically heated lunch box 1 includes a base 2 in which is mounted a shallow dish 3 for receiving the food to be heated.
  • the dish 3 is made of metal and has sides 4, and a floor 5 opposing the open mouth 6.
  • An electric element 7 extends about the dish 3 adjacent the four sides 4 for heating the dish 3.
  • Positioned either side of the element 7 are inner and outer electrical insulating sheets 8a, 8b preferably of mica.
  • a vacuum jacket or evacuated heat insulating base chamber 9 surrounds the element 7, the sides 4 and floor 5.
  • the evacuated chamber 9 is bounded by walls 26 and 27 which may be made from transparent material such as glass and are substantially equidistantly spaced and parallel.
  • the inner faces 10a, 10b of the base chamber 9 may be silvered or otherwise coated to reduce radiant heat transfer, while the substantial vacuum in the chamber works in the known manner to reduce thermal convection and conduction.
  • the element 7 and insulating sheets 8a, 8b are received in a cavity 13 which extends between the sides 3 and the evacuated chamber 9, as well as between the floor 5 and evacuated chamber 9. In this manner the dish 3 is received in the evacuated chamber 9.
  • the evacuated chamber 9 is in turn mounted in a base housing 18 which may be moulded from plastics.
  • a lid 11 engages the base 2 to close the top of the dish 3.
  • a magnetic seal of a known type includes two cooperating strips 12a, 12b mounted to the lid 11 and base 2 respectively for sealing therebetween.
  • the two strips may, for example, comprise a magnetised strip within a resilient gasket and a strip of ferromagnetic material.
  • the strip 12b extends peripherally around the mouth 5 of the dish 3.
  • the lid 11 includes a body 15 having a cavity in which an evacuated heat insulating lid chamber 16 is provided for covering the dish 3.
  • the walls 28, 29 of the chamber 16 may be made from transparent material such as glass with opposing inner surfaces silvered or otherwise coated to reduce radiant heat transfer.
  • the evacuated chamber 16 is dimensioned to overly the cavity 13, or may alternatively extend to overly the upper face 17 of the base chamber 9.
  • the evacuated chamber 16 includes a projecting plug-portion 19 which projects from the face 21 and is sized to fit within the mouth 6 to close the dish 3.
  • the plug portion 19 the plug portion and mouth include substantially parallel cooperating faces 24, 25 an outermost edge 20 of the plug portion 19 being chamfered to assist in inserting the plug portion 19.
  • the strip 12a extends peripherally around the evacuated chamber 16 adjacent the face 21.
  • the lunch box further includes an electronic controller (not shown) and user controls (not shown) on a control panel 20.
  • the controls allow a user to select a heating temperature and a time which may be shown on the displays 22, 23 respectively.
  • the controller operates the element 7 to achieve the selected temperature by the selected time.

Landscapes

  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Purses, Travelling Bags, Baskets, Or Suitcases (AREA)

Abstract

L'invention concerne une boîte-repas(1) alimentée par une batterie qui comporte un élément électrique (7) s'étendant autour d'un plat (3) recevant un aliment dans la base (2) de la boîte, et une chambre de base (9) isolante protégeant de la chaleur entourant l'élément électrique (7), les côtés et le fond du plat. Un couvercle (11) comporte une chambre (16) de couvercle isolante protégeant de la chaleur environnante (16) munie d'une partie de bouchon qui se projette dans la bouche du plat pour fermer le plat (3) et réduire les pertes de chaleur.
PCT/IB2006/002507 2006-09-13 2006-09-13 Boîte-repas chauffée électriquement Ceased WO2008032135A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/IB2006/002507 WO2008032135A1 (fr) 2006-09-13 2006-09-13 Boîte-repas chauffée électriquement

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/IB2006/002507 WO2008032135A1 (fr) 2006-09-13 2006-09-13 Boîte-repas chauffée électriquement

Publications (1)

Publication Number Publication Date
WO2008032135A1 true WO2008032135A1 (fr) 2008-03-20

Family

ID=37836632

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2006/002507 Ceased WO2008032135A1 (fr) 2006-09-13 2006-09-13 Boîte-repas chauffée électriquement

Country Status (1)

Country Link
WO (1) WO2008032135A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102429433A (zh) * 2012-02-13 2012-05-02 大连创达技术交易市场有限公司 一种环保加热饭盒
CN105852371A (zh) * 2016-05-05 2016-08-17 范道柱 一种自加热的简易塑料饭盒
CN105852370A (zh) * 2016-03-29 2016-08-17 深圳市纳美新材料科技有限公司 饭盒
KR20200137346A (ko) * 2019-05-30 2020-12-09 임창현 온열 기능을 갖는 도시락 가방

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4738363A (en) * 1986-12-04 1988-04-19 Hudson Kirby A Beverage can container
US6144016A (en) * 1999-06-21 2000-11-07 Garvin; Tomika Heating element lunch box
US6222160B1 (en) * 1999-02-26 2001-04-24 Atd Corporation Food transport container with integral heater
WO2002064445A1 (fr) * 2001-02-15 2002-08-22 Creative Packaging Services Pty Ltd Contenant conservant la temperature
US20050263432A1 (en) * 2004-05-28 2005-12-01 Igloo Products Corporation Insulated tote for beverage box

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4738363A (en) * 1986-12-04 1988-04-19 Hudson Kirby A Beverage can container
US6222160B1 (en) * 1999-02-26 2001-04-24 Atd Corporation Food transport container with integral heater
US6144016A (en) * 1999-06-21 2000-11-07 Garvin; Tomika Heating element lunch box
WO2002064445A1 (fr) * 2001-02-15 2002-08-22 Creative Packaging Services Pty Ltd Contenant conservant la temperature
US20050263432A1 (en) * 2004-05-28 2005-12-01 Igloo Products Corporation Insulated tote for beverage box

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102429433A (zh) * 2012-02-13 2012-05-02 大连创达技术交易市场有限公司 一种环保加热饭盒
CN105852370A (zh) * 2016-03-29 2016-08-17 深圳市纳美新材料科技有限公司 饭盒
CN105852370B (zh) * 2016-03-29 2018-07-06 深圳市纳美健康科技有限公司 饭盒
CN105852371A (zh) * 2016-05-05 2016-08-17 范道柱 一种自加热的简易塑料饭盒
KR20200137346A (ko) * 2019-05-30 2020-12-09 임창현 온열 기능을 갖는 도시락 가방
KR102201418B1 (ko) * 2019-05-30 2021-01-12 전지운 온열 기능을 갖는 도시락 가방

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