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WO1997002777A1 - Four - Google Patents

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Info

Publication number
WO1997002777A1
WO1997002777A1 PCT/GB1996/001669 GB9601669W WO9702777A1 WO 1997002777 A1 WO1997002777 A1 WO 1997002777A1 GB 9601669 W GB9601669 W GB 9601669W WO 9702777 A1 WO9702777 A1 WO 9702777A1
Authority
WO
WIPO (PCT)
Prior art keywords
oven
enclosure
heating element
lock
upper section
Prior art date
Application number
PCT/GB1996/001669
Other languages
English (en)
Inventor
Stuart David Brown
Original Assignee
Hasbro International Inc.
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 Hasbro International Inc. filed Critical Hasbro International Inc.
Priority to AU64646/96A priority Critical patent/AU6464696A/en
Priority to NZ312745A priority patent/NZ312745A/en
Priority to EP96924065A priority patent/EP0782406A1/fr
Publication of WO1997002777A1 publication Critical patent/WO1997002777A1/fr

Links

Classifications

    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63H—TOYS, e.g. TOPS, DOLLS, HOOPS OR BUILDING BLOCKS
    • A63H33/00—Other toys
    • A63H33/30—Imitations of miscellaneous apparatus not otherwise provided for, e.g. telephones, weighing-machines, cash-registers
    • A63H33/3055—Ovens, or other cooking means
    • 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
    • A47J37/00—Baking; Roasting; Grilling; Frying
    • A47J37/06—Roasters; Grills; Sandwich grills
    • A47J37/0623—Small-size cooking ovens, i.e. defining an at least partially closed cooking cavity
    • 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
    • A47J37/00—Baking; Roasting; Grilling; Frying
    • A47J37/06—Roasters; Grills; Sandwich grills
    • A47J37/0623—Small-size cooking ovens, i.e. defining an at least partially closed cooking cavity
    • A47J37/0629—Small-size cooking ovens, i.e. defining an at least partially closed cooking cavity with electric heating elements

Definitions

  • the invention relates to an oven.
  • an oven comprises an enclosure having upper and lower sections; an electrical heating element mounted in the lower section of the enclosure; and an open mesh support positioned over the heating element on which food to be cooked is located, wherein the enclosure is formed as a double wall structure to retain heat, wherein the upper section of the enclosure is domed to enable heat which has passed from the heating element through the open mesh support to be convected onto the top of food on the support, and wherein the upper and lower sections can be closed to define a sealed volume within the enclosure during cooking.
  • the dome produces a convection effect which gives an air temperature adjacent the food, in the centre of the oven, which is higher than at the outer edge.
  • the use of a double wall structure primarily achieves an insulating layer but also acts, in conjunction with the use of a sealed enclosure, to decrease the heating up time and increase the final temperature for a given size of enclosure.
  • a further benefit is that the outer wall is insulated from the inner wall and therefore does not allow heat to radiate into the outer oven structure. This is important because if heat can radiate into the outer structure, toy regulations can be breached.
  • the upper section which is domed extends from the region of the support.
  • the upper section is movable relative to the lower section of the enclosure and preferably is hinged to it. In this way, the upper section can be pivoted away from the lower section to enable access to be obtained to the inside of the enclosure.
  • an air gap is provided between the walls of the enclosure but in some examples this gap could be filled completely or partially with further heat insulating material.
  • the support can be constructed in any convenient way but typically comprises a grille, which may be formed of plastics material or metal mesh.
  • a grille which may be formed of plastics material or metal mesh.
  • the use of metal enables heat to be conducted to food supported on the support in addition to the convected heat.
  • the food to be cooked may be placed directly on the mesh, but typically will be placed in a dish, tray or tin resting on the mesh.
  • the heating element can be any conventional form such as a heating coil but preferably comprises a halogen bulb. This is a relatively safe low power heat source. Indeed, heat sources delivering no more than 35W are preferred and can be used in this invention to achieve cooling temperatures relatively quickly.
  • the oven further comprises a temperature sensor for monitoring the temperature within the enclosure. This enables the temperature to be displayed for example but in addition can be used, as will be explained in more detail below, to control access to the food.
  • the oven according to the invention can be used in a stand-alone form but preferably, particularly when the oven is to be used by children, further control means is provided to prevent access to the food until the temperature within the enclosure is below a predetermined threshold.
  • the control means could comprise a suitable locking system for locking the upper and lower sections of the enclosure together, the system being responsive to the temperature within the enclosure so as to be released when that temperature falls below a predetermined threshold.
  • a toy oven assembly comprising an oven according to the invention; and a protective structure within which the oven is positioned, the protective structure having at least one door through which access to the oven can be obtained, the door having a lock; and a control system responsive to the temperature within the oven to activate the lock when the temperature is less than a predetermined value.
  • control system could be implemented in a variety of ways using a microprocessor or the like but conveniently, where the oven includes a temperature sensor for monitoring the temperature within the enclosure, the control system comprises an electrical circuit connecting a lock actuator and the temperature sensor whereby the temperature sensor acts as a switch which in one condition activates the lock actuator so that the lock is released and in the other condition deactivates the lock actuator. Activation occurs when the sensed temperature is less than the predetermined threshold.
  • the oven further includes a closure sensor for sensing when the enclosure is closed and for providing a suitable output signal.
  • this sensor can be used as a switch in an electrical circuit of the control system to control activation of the heating element only when the enclosure is closed.
  • the protective structure includes a second access opening through which food to be cooked can be supplied by the user when the door is closed. As will be explained below, this enables food to be inserted into the enclosure after the oven has been heated up but without risk to the user.
  • a further access opening is provided to enable cooked food to be extracted from the protective structure.
  • Figure 1 is a schematic, cross-section through the oven
  • Figure 2 is a view similar to Figure 1 but with most of the inner parts omitted, showing the enclosure in its open position;
  • Figure 3 is an exploded view of the components making up the enclosure
  • Figure 4 is a perspective view of a toy oven assembly from the front and right side incorporating an oven of the type shown in Figure 1;
  • Figure 5 is a perspective view of the oven assembly shown in Figure 4 from above, left side and front;
  • Figure 6 is a perspective view of the oven assembly shown in Figures 4 and 5 from the left side and front;
  • Figure 7 is a block circuit diagram of the control system of the assembly shown in Figures 4-6; and,
  • Figures 8-13 are front elevations showing the oven assembly in different stages of use.
  • the construction of the oven is shown in Figure 1.
  • the oven includes an enclosure 1 having an upper section 2 and a lower section 3 to which the upper section is hinged at 4.
  • Each section 2,3 of the enclosure 1 has an outer. plastics skin 5 and an inner, reflective skin 6 made of a different material with a 10mm air gap 7 between them.
  • the upper section 2 has a generally domed, hemispherical form and the lower section 3 is dish shaped with a circular periphery.
  • a support plate 8 in the form of an aluminium grille with apertures 8A is mounted at the top of the lower section 3 and beneath this is positioned a heating element 9 in the form of a halogen bulb connected via support connectors 10 to a low voltage supply (not shown) .
  • An aluminium tray 11 sits on the support 8 and contains a cake mixture to be baked.
  • the bulb 9 In use, when a voltage is applied across the bulb 9, the bulb 9 will radiate heat which is partly conducted directly to the tray 11 through the support 8 as shown at 12 and is partly convected around the tin 11 and is guided by the domed form of the upper section 2 of the enclosure and impinges on the mix from above as shown at 13.
  • this structure maximises the use of heat generated by the heating element 9 firstly by minimising heat loss through the enclosure by using an air gap and different materials for inner and outer skins 5,6; secondly by forming the upper section 2 of the enclosure in a domed form so that the convected heat is guided back onto the cake mix; and thirdly by allowing heat to radiate directly through the apertures 8A to the tray 11.
  • Figure 2 illustrates the oven with the upper section 2 in its open position, with the tray 11 removed and omitting the bulb 9.
  • the manner of manufacturing the enclosure 1 can be seen more clearly in Figure 3.
  • the outer and inner skins 5,6 of the upper section 2 are formed as separate, domed structures, the inner skin 6 having a radially outwardly extending flange 14 to which the outer skin 5 is welded or glued.
  • the outer and inner skins 5,6 of the lower section 3 are also formed separately with the inner skin 6 having a radially outwardly extending flange 15 to which the outer skin 5 is welded or glued.
  • FIG. 1 Typically, the diameter of the enclosure 1 is about 13cm.
  • Figures 4-6 illustrate the oven shown in Figure 1 incorporated into a protective structure 20.
  • the structure includes a main cavity 21 in which the oven 1 is located.
  • the lower section 3 of the oven enclosure is embedded in a base 22 while the upper section 2 is visible.
  • a transparent plastic fronted door 23 provides access to the cavity 21.
  • the righthand side of the enclosure 20 has an inlet opening 24 while a hob 25 is provided on the top of the enclosure, the hob being controlled from a control switch 26.
  • a power light is included at 27 and a heating light at 28.
  • a control knob 29 is mounted to the left side of the structure ( Figure 5) and is linked by a mechanical linkage (not shown) to the upper section 2 of the enclosure 1 of the oven to enable the upper section to be pivoted between open and closed positions.
  • a digital clock display is provided at 40.
  • An optional light may be included to indicate when the door 23 is locked.
  • the control system is shown in block circuit diagram form in Figure 7.
  • the system is connected at 41 to a 12 volt supply (not shown) positioned within the protective structure 20.
  • the supply is connected to the switch 26 and the hob 25 which is fabricated in the form of a 5W, 12V heating lamp.
  • the -12V pole is connected to a solenoid 31 which acts as a lock actuator/deactuator for controlling a lock (not shown) associated with the transparent plastic door 23.
  • the circuit including the solenoid 31 is connected in series with two temperature sensors 32 mounted within the oven 1, the sensors 32 acting as a switch which closes when the temperature within the oven reaches 40°C.
  • the sensors 32 are also connected to the +12V pole.
  • the supply is connected to a circuit having a pair of switches 33,34 adapted to be closed when the door 23 and the upper section 2 of the oven 1 respectively are closed.
  • the switches 33,34 are connected in series with a second sensor 35 mounted within the oven 1 for sensing when the temperature within the oven reaches 200°C.
  • the sensor 35 acts as a switch and is connected in series with an LED constituting the heating light 28 and is also connected to the 35W, 12V bulb 9.
  • the power supply is also connected in series with an LED constituting the power light 27.
  • the temperature within the oven exceeds 40°C which is sensed by the sensors 32 which close thus deactivating the solenoid 31 and allowing the lock to actuate so that the door 23 can no longer be opened.
  • an LED 43 will illuminate indicating the locked condition.
  • the temperature within the oven 1 will reach about 200°C which is sensed by the sensor 35 which then opens. This deactivates the LED 28 and the bulb 9 and deactivation of the LED 28 will indicate to the user that the oven is ready for food to be inserted.
  • the knob 29 is rotated to open the upper section 2 of the oven 1 (and thus opening the switch 34) and a tray 36 containing cake mix is inserted through the opening 24 and pushed using a plastics pusher 37 onto the grille 8 ( Figures 9 and 10) .
  • the pusher 37 is removed and the upper section 2 of the oven is then lowered by rotating the knob 29 ( Figure 11) .
  • the door 23 remains locked during this process.
  • the switch 34 is again closed and since the temperature will have dropped during this process, the sensor 35 will have also have closed so that the bulb 9 is reactivated and cooking continues, typically for about 15 minutes as the user wishes.
  • the user rotates the knob 29 to open the upper section 2 thus opening the switch 34 and terminating the supply of power to the bulb 9 ( Figure 12) .
  • This allows the interior ⁇ f the oven to cool and once the temperature has dropped below 40°C as detected by the sensor 32, the switch constituted by the sensor opens, activating the solenoid 31 which releases the lock to enable the door 23 to be opened ( Figure 13) .
  • the cooked cake can now be removed.
  • this sequence of controls ensures that the user does not risk being burnt by the high temperatures which are reached during the cooking process. If the user wishes to use the hob, he closes the switch 26 which then enables power to be supplied to the heating lamp 25.
  • a temperature sensor 44 is positioned adjacent the heating lamp 25 and is normally closed at temperatures less than 40°C. Once the temperature exceeds that value, the sensor 44 will open thus breaking the circuit through the heating lamp 25 and allowing the lamp to cool. When the temperature drops below 40°C, the sensor 44 closes again and the lamp 25 is reactivated.
  • the display 40 is connected to a timing circuit 45 which allows the user to simulate the setting of cooking times although the timer does not in fact control the cooking process.
  • an oscillator 46 is provided connected via a microprocessor 50 to three switches 47-49 constituting a timer start/stop switch, a minute setting switch and an hour setting switch respectively. Times are displayed on the display 40 which is typically an LCD.
  • the microprocessor 50 responds to suitable inputs via the switches 47-49 to set start and stop times and to simulate the appearance of a conventional oven providing such a feature.

Landscapes

  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Electric Stoves And Ranges (AREA)

Abstract

Four comprenant une enceinte (1) comportant des parties supérieure et inférieure (2, 3); un élément chauffant électrique (9) monté dans la partie inférieure (3) de l'enceinte (1); et un support (8) à trous positionné sur l'élément chauffant (9) sur lequel sont placés les aliments à cuire. L'enceinte (1) est formée avec une structure à double paroi pour retenir la chaleur. La partie supérieure (2) de l'enceinte (1) est configurée en forme de dôme pour assurer la convexion de la chaleur depuis l'élément chauffant (9) jusqu'au-dessus des aliments situés sur le support, à travers le support (8) à trous. Les parties supérieure et inférieure (2, 3) peuvent être fermées pour définir un volume hermétiquement clos à l'intérieur de l'enceinte pendant la cuisson.
PCT/GB1996/001669 1995-07-12 1996-07-11 Four WO1997002777A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
AU64646/96A AU6464696A (en) 1995-07-12 1996-07-11 Oven
NZ312745A NZ312745A (en) 1995-07-12 1996-07-11 Oven with electric element below food-supporting mesh and enclosure with domed top
EP96924065A EP0782406A1 (fr) 1995-07-12 1996-07-11 Four

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GBGB9514188.3A GB9514188D0 (en) 1995-07-12 1995-07-12 Oven
GB9514188.3 1995-07-12

Publications (1)

Publication Number Publication Date
WO1997002777A1 true WO1997002777A1 (fr) 1997-01-30

Family

ID=10777504

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB1996/001669 WO1997002777A1 (fr) 1995-07-12 1996-07-11 Four

Country Status (5)

Country Link
EP (1) EP0782406A1 (fr)
AU (1) AU6464696A (fr)
GB (1) GB9514188D0 (fr)
NZ (1) NZ312745A (fr)
WO (1) WO1997002777A1 (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999055210A1 (fr) * 1998-04-27 1999-11-04 Lauri Volpi Four a pizza
FR2991158A1 (fr) * 2012-06-05 2013-12-06 L Art Du Jardin Ensemble de cuisson d'exterieur multifonction
EP3102300A4 (fr) * 2014-02-06 2017-10-11 Seebo Interactive Ltd. Cuisine connectée pour enfants
KR101899035B1 (ko) 2017-11-22 2018-10-31 주식회사 고피자 화덕장치
KR101941477B1 (ko) * 2018-09-10 2019-01-24 주식회사 고피자 화덕장치
WO2020082117A1 (fr) * 2018-10-23 2020-04-30 Breville Pty Limited Appareil de cuisson
JP2020198911A (ja) * 2019-06-06 2020-12-17 株式会社エポック社 模型玩具及び加熱調理玩具

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104258579B (zh) * 2014-08-25 2016-08-24 东莞旭科电子制品有限公司 一种用于儿童玩具电烤箱的电烤器

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1302094B (de) * 1964-11-10 1969-12-18 Volz Otto Grill- oder Roestgeraet
US4249067A (en) * 1979-01-12 1981-02-03 Cummings Charles A Toy electric convection oven
EP0082972A2 (fr) * 1981-12-02 1983-07-06 Moulinex S.A. Appareil électrique de cuisson, tel qu'un four ménager
US4563573A (en) * 1983-12-23 1986-01-07 Cpg Products Corp. Toy electric oven
WO1993014352A1 (fr) * 1992-01-21 1993-07-22 Jaime Sans Petit four pour griller des aliments sur les bruleurs des cuisinieres a gaz
EP0555176A1 (fr) * 1992-02-05 1993-08-11 Robert Keller Ag Metallwarenfabrik, Kunstschlosserei Appareil pour confectionner des produits de boulangerie, en particulier des pizzas
FR2694892A1 (fr) * 1992-08-24 1994-02-25 Toymax Ltd Cuisinière - Jouet.
DE9420600U1 (de) * 1994-12-23 1995-03-16 Fuchs, Thomas, Dipl.-Ing.(FH), 68753 Waghäusel Haushaltsofen
US5422458A (en) * 1993-10-01 1995-06-06 Simmel; Thomas L. Multi-purpose toy oven with heating, cooling, and door control system

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1302094B (de) * 1964-11-10 1969-12-18 Volz Otto Grill- oder Roestgeraet
US4249067A (en) * 1979-01-12 1981-02-03 Cummings Charles A Toy electric convection oven
EP0082972A2 (fr) * 1981-12-02 1983-07-06 Moulinex S.A. Appareil électrique de cuisson, tel qu'un four ménager
US4563573A (en) * 1983-12-23 1986-01-07 Cpg Products Corp. Toy electric oven
WO1993014352A1 (fr) * 1992-01-21 1993-07-22 Jaime Sans Petit four pour griller des aliments sur les bruleurs des cuisinieres a gaz
EP0555176A1 (fr) * 1992-02-05 1993-08-11 Robert Keller Ag Metallwarenfabrik, Kunstschlosserei Appareil pour confectionner des produits de boulangerie, en particulier des pizzas
FR2694892A1 (fr) * 1992-08-24 1994-02-25 Toymax Ltd Cuisinière - Jouet.
US5422458A (en) * 1993-10-01 1995-06-06 Simmel; Thomas L. Multi-purpose toy oven with heating, cooling, and door control system
DE9420600U1 (de) * 1994-12-23 1995-03-16 Fuchs, Thomas, Dipl.-Ing.(FH), 68753 Waghäusel Haushaltsofen

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999055210A1 (fr) * 1998-04-27 1999-11-04 Lauri Volpi Four a pizza
FR2991158A1 (fr) * 2012-06-05 2013-12-06 L Art Du Jardin Ensemble de cuisson d'exterieur multifonction
EP3102300A4 (fr) * 2014-02-06 2017-10-11 Seebo Interactive Ltd. Cuisine connectée pour enfants
KR101899035B1 (ko) 2017-11-22 2018-10-31 주식회사 고피자 화덕장치
KR101941477B1 (ko) * 2018-09-10 2019-01-24 주식회사 고피자 화덕장치
WO2020082117A1 (fr) * 2018-10-23 2020-04-30 Breville Pty Limited Appareil de cuisson
US12262845B2 (en) 2018-10-23 2025-04-01 Breville Pty Limited Cooking appliance
JP2020198911A (ja) * 2019-06-06 2020-12-17 株式会社エポック社 模型玩具及び加熱調理玩具
JP7241610B2 (ja) 2019-06-06 2023-03-17 株式会社エポック社 模型玩具及び加熱調理玩具

Also Published As

Publication number Publication date
GB9514188D0 (en) 1995-09-13
AU6464696A (en) 1997-02-10
EP0782406A1 (fr) 1997-07-09
NZ312745A (en) 1997-11-24

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