EP1647775B1 - Four avec dispositif de support de vitres - Google Patents

Four avec dispositif de support de vitres Download PDF

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Publication number
EP1647775B1
EP1647775B1 EP05256257.6A EP05256257A EP1647775B1 EP 1647775 B1 EP1647775 B1 EP 1647775B1 EP 05256257 A EP05256257 A EP 05256257A EP 1647775 B1 EP1647775 B1 EP 1647775B1
Authority
EP
European Patent Office
Prior art keywords
glass
oven
guides
supporting
glasses
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.)
Not-in-force
Application number
EP05256257.6A
Other languages
German (de)
English (en)
Other versions
EP1647775A2 (fr
EP1647775A3 (fr
Inventor
Ki Tae c/o LG Electronics Inc. Lee
Sang Dong Park
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.)
LG Electronics Inc
Original Assignee
LG Electronics 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
Priority claimed from KR1020040081582A external-priority patent/KR101118440B1/ko
Priority claimed from KR1020040081581A external-priority patent/KR100674720B1/ko
Application filed by LG Electronics Inc filed Critical LG Electronics Inc
Publication of EP1647775A2 publication Critical patent/EP1647775A2/fr
Publication of EP1647775A3 publication Critical patent/EP1647775A3/fr
Application granted granted Critical
Publication of EP1647775B1 publication Critical patent/EP1647775B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • F24C15/00—Details
    • F24C15/02—Doors specially adapted for stoves or ranges
    • F24C15/04—Doors specially adapted for stoves or ranges with transparent panels

Definitions

  • the present invention relates to an oven, and more particularly, to an oven, for example an electric oven, with an improved arrangement for securely supporting a plurality of inner glasses of a door of the oven.
  • An oven is a cooking device that uses a variety of heating sources to uniformly bake or roast food.
  • An electric oven uses an electric heater to heat food loaded in a cooking chamber, thereby baking or roasting the food.
  • the cooking chamber is provided at a front side of the oven, with an opening that is selectively closed or opened by a door.
  • the door must be designed fulfilling two important requirements. That is, the door must be designed such that transfer of heat from the cooking chamber to the outside of the door is minimized, while allowing a user to observe the inside of the cooking chamber so that the user can identify the food that is being cooked.
  • the door incorporates transparent glass.
  • the door is formed from a plurality of adjacent glass panels or panes. Gaps are provided between the glass panels so that air in the gaps functions as an insulating and/or cooling medium. That is, the air in the gaps improves the heat-shielding effect.
  • the glass panels may be broken by collision between the panels. Therefore, an additional structure for supporting the plurality of panels is required.
  • a doorframe fixed on a front glass panel and a fixing bracket fixed on the doorframe while directly supporting the plurality of the glass panels are required.
  • the bracket is screw-coupled to the doorframe, in the course of which the doorframe, which is typically coated with a gloss material may be damaged.
  • the glass panels supported by the bracket may be broken when the heat generated in the cooking chamber is transmitted to the bracket.
  • outer impact caused by the movement of the electric oven may be transmitted to the glass panels and cause damage to the panels.
  • EP 1 076 210 discloses an oven door in which elastomeric return blocks are used to hold the glass panels in place.
  • EP 0 010 829 discloses a self-contained window unit for assembly in an oven door.
  • US 5,735,261 discloses an oven door of a kitchen stove.
  • the present invention is directed to an oven, for example an electric oven with an improved glass supporting structure, which addresses one or more problems due to limitations and disadvantages of the related art.
  • the invention provides an oven having a door assembly as set out in the claims.
  • Embodiments provide a door assembly for an oven, which permits viewing of the inside of the oven, comprising: a front panel defining a front portion of the door assembly; a plurality of inner glass panels; and one or more retaining springs, each spring acting on all of the inner glass panels.
  • Embodiments also provide a door assembly for an oven, which permits viewing of the inside of the oven, comprising: a front panel defining a front portion of the door assembly; a plurality of inner glass panels; and at least one door frame component attached to the front panel and adapted to constrain movement of the inner glass panels.
  • Embodiments also provide an electric oven comprising a door assembly for blocking out heat generated in a cooking chamber, characterized in that the door assembly comprises: a front glass defining a front portion of the door assembly; first, second and third inner glasses disposed in rear of the front glass; a doorframe supporting the front and inner glasses; a plurality of glass guides integrally formed with the doorframe; and a movement preventing spring for receiving the inner glasses to prevent the inner glasses from moving.
  • each movement preventing or retaining spring receives one or more inner glass panels into receiving portions or grooves of the spring, and a rearmost inner glass panel against an extending portion of the spring.
  • Fig. 1 shows an electric oven according to a preferred embodiment of the present invention.
  • the electric oven includes a cooking chamber 100 and a door assembly 200 installed on a front portion of the cooking chamber 100 to selectively open and close the cooking chamber 100.
  • the door assembly 200 is pivotally fixed, for example using one or more hinges, on a front-lower end of an oven body within which the cooking chamber 100 is defined.
  • a plurality of heaters are installed in the cooking chamber to heat air in the cooking chamber.
  • the plurality of heaters may be arranged in a variety of formations.
  • the present invention provides a structure for safely supporting a plurality of glass panels installed in the door assembly 200.
  • the door assembly 200 includes a transparent window 220 having a front glass 222 and a plurality of inner glasses 224, 226 and 228 and a door handle 240 allowing a user to conveniently open and close the door assembly 200.
  • a front plate 300 is provided to define a front portion of the cooking chamber 100.
  • a control panel 500 is installed on an upper portion of the front plate 300.
  • a chamber cover 120 is provided to define a rear portion of the cooking chamber 100.
  • a convection fan 400 generating air circulations in the cooking chamber 100 is provided in rear of the chamber cover 120 and a convection heater (not shown) is disposed around the convection fan 400.
  • the chamber cover 120 is provided, at a central portion, with a plurality of air holes 121 through which air in the cooking chamber 100 is sucked by the convection fan 400 and air heated by the convection heater is fed into the cooking chamber 100 by the convection fan 400.
  • Side heaters 600 are installed on both sides walls of the cooking chamber 100 and a bottom heater (not shown) is installed on a bottom of the cooking chamber 100.
  • An electric component chamber (not shown) is provided on a top of the cooking chamber 100.
  • a variety of electric components such as a top heater (not shown), a halogen heater (not shown) transmitting radiant heat, and the like may be installed in the electric component chamber.
  • the types of the heaters are not limited to the above case. A variety of other types of heaters may be used.
  • the output of the electric oven may be increased and controlled to quickly and uniformly cook the food.
  • the door assembly 200 is designed to minimize the amount of heat generated in the cooking chamber 100 which passes out of the chamber and to securely support the plurality of inner glasses.
  • Fig. 2 shows the door assembly depicted in Fig. 1 and Fig. 3 shows a spring depicted in Fig. 2 .
  • the door assembly 200 includes a front glass 222 defining a front appearance and first, second and third inner glasses 224, 226 and 228 that define a transparent window 220 installed behind the front glass 222 to reduce the amount of heat generated in the cooking chamber 100 which escapes through the door, and to allow a user to observe the inside of the cooking chamber 100.
  • a doorframe component (refer to the reference numeral 260 of FIG. 4 ) is installed on a rear-upper end of the front glass 222 to securely fix the first, second and third inner glasses 224, 226 and 228.
  • One or more retaining springs referred to below as movement preventing springs 280, are disposed between and couple, or selectively bear or act upon, the first, second and third inner glasses 224, 226 and 228, so as to reduce vibration of the inner glasses 224, 226 and 228.
  • Each retaining spring comprises an elongate metal strip bent to provide direct coupling between the inner glasses, as shown in Figure 2 .
  • the movement preventing spring 280 includes a first insertion portion or groove 282 in which the first inner glass 224 is fixedly inserted, a second insertion portion or groove 284 in which the second inner glass 226 is fixedly inserted, and a buffering portion 286 formed between the first and second insertion portions 282 and 284 to function as a buffer between the first and second insertion portions 282 and 284.
  • Each insertion portion 282, 284 is preferably formed as an arcuate or similar open loop section of the spring 280, with the edge of the inner glass inserted into and retained in the mouth of the open loop.
  • the first and second insertion portions 282 and 284 are different in height from each other so that the first and second inner glasses 224 and 226 can be inserted into the first and second insertion portions 282 and 284 at different heights.
  • the open looped sections are staggered such that, in use, one structure is further from the centre of the door than the other, so that an inner panel further from the front panel can be larger than an outer panel. Since the fixing heights of the inner glasses 224, 226 and 228 are different from each other, the heat dissipation of the heat from the cooking chamber 100 can be more effectively suppressed.
  • the first and second insertion portions 282 and 284 extend away from adjacent portions of the spring, and in use away from the centre of the door, in the same direction.
  • the buffering portion 286 effectively forms an open loop which extends in an opposite direction to that of the first and second insertion grooves 282 and 284. Therefore, when the oven is transferred in a state where the first and second inner glasses 224 and 226 have been respectively inserted into the first and second insertion portions 282 and 284 and the vibration is transmitted to the first and second inner glasses 224 and 226, vibration is absorbed by the buffering portion 286, thereby safely maintaining the first and second inner glasses 224 and 226.
  • the movement preventing spring 280 further includes an extending portion 285 extending from an end portion of the second insertion portion 284, and is designed to contact the third inner glass 228 to prevent the third inner glass 228 from colliding with the second inner glass 226.
  • An end region of the extending portion 285, which contacts the third inner glass 228, is bent in towards and bears upon the plane of the third inner glass 228 to reduce the likelihood of the third glass 228 from being broken or making noise by the movement preventing spring 280.
  • a plurality of the described movement preventing springs 280 may be provided inserted over the edges of the first and second inner glasses. That is, the number of the springs can be properly selected to prevent the inner glasses from colliding with each other.
  • FIG. 4 shows the first inner glass located in the doorframe component and FIG. 5 shows the first and second inner glasses located in the doorframe component.
  • FIG. 4 shows the first inner glass located in the doorframe component
  • FIG. 5 shows the first and second inner glasses located in the doorframe component.
  • the movement preventing springs are omitted from these Figures.
  • a separate doorframe component 260 fixed on a side portion of the front glass 222 is installed on each of the left and right sides of the rear surface of the front glass 222.
  • the first and second inner glasses 224 and 226 of the transparent window 220 which help to prevent heat dissipation from the cooking chamber 100, are located in the doorframe components 260.
  • the doorframe 260 may be fixed on the rear surface of the front glass 222 through adhesion, screw-coupling, or other fitting processes.
  • a side flange 262 is formed on a side surface of the doorframe component 260 to be in parallel with a rear surface of the front glass 222.
  • the side flange 262 increases an area where the doorframe component 260 contacts the front glass 222, thereby helping to securely adhere the doorframe component 260 to the front glass 222 through, for example, an adhesion process.
  • a guiding/supporting unit for guiding and supporting the first and second inner glasses 224 and 226 is formed on the side flange 262.
  • the guide unit includes first glass guides 264 (only one is shown in the drawing) for guiding and supporting the disposition of a front surface edge of the first inner glass 224 and second glass guides 266 (only one is shown in the drawing) for guiding and supporting the disposition of upper and lower ends of the first inner glass 224.
  • the disposition of left and right side ends of the first inner glass 224 are guided and supported by proximal sidewalls of the doorframe 260.
  • Each of the first glass guides 264 is formed by cutting and bending a section of the doorframe component 260. That is, the section is partly cut away from the doorframe component 260 and bent to be in parallel with the rear surface of the front glass 222 so that the front surface edge of the first inner glass 224 can be simply guided and supported thereon.
  • Each of the second glass guides 266 is also formed by cutting and bending another section of the doorframe component 260.
  • first inner glass 224 Since the disposition of the first inner glass 224 is guided and supported by the first and second glass guides 264 and 266 that are formed by sections cut and bent away from the doorframe component 260, it becomes possible to dispose the first inner glass 224 on the first and second glass guides 264 and 266 in a state where the front glass 222 is fixed on the doorframe component 260.
  • the second inner glass 226 is fitted.
  • the disposition process of the second inner glass 226 will be described hereinafter in more detail.
  • Third glass guides 267 are formed above the respective second glass guides 266 by being bent twice from the doorframe component 260. That is, each of the glass guides 267 has orthogonal first and second bent portions 268 and 269.
  • the first bent portions 268 are designed to guide and support upper and lower ends of the second inner glass 226 while the second bent portions 269 are designed to guide and support a front surface edge of the second glass 226.
  • the first and second inner glasses 224 and 226 are located in the door with a predetermined gap between them.
  • the gap between the first and second inner glasses 224 and 226 functions to block out the heat generated in the cooking chamber.
  • a gap is also defined between the front glass 222 and the first inner glass 224, functioning to block out the heat generated in the cooking chamber.
  • the guide unit comprised of the first, second and third glass guides 264, 266 and 267 is integrally formed with the inner portion of the doorframe component 260, it is easy to form the same by simply cutting a portion of the doorframe 260 and bending the cut portion.
  • a fixing member may be further provided to more securely fix the disposition of the third inner glass 228 in a state where the third inner glass 228 is guided by the doorframe component 260.
  • the second and third glass guides are formed on the doorframe component at different levels from each other, thereby accurately supporting and guiding the dispositions of the inner glasses.
  • the heating elements When electric power is applied, the heating elements are heated to transmit heat into the cooking chamber 100.
  • a microwave heater may be provided to radiate microwaves.
  • the convection fan 400 is operated to suck the air from the cooking chamber 100 and heat the air. The heated air is fed again to the cooking chamber 100.
  • the heat generated in the cooking chamber 100 is blocked out by the glasses provided on the door assembly 200 not to be dispatched to an external side. Since the glasses are securely supported by the doorframe component and the movement preventing springs 280, the door assembly can work more reliably.
  • the movement preventing spring 280 may be designed such that the third inner glass in addition to the first and second inner glasses can be inserted therein. That is, the movement preventing springs 280 may be designed having a third insertion portion or groove for receiving the third inner glass.
  • the number of glasses may be more or less than four.
  • the front panel of the door assembly may have a glass panel fitted therein.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Electric Ovens (AREA)

Claims (10)

  1. Four ayant un ensemble de porte (200) adapté pour réduire la chaleur s'échappant d'une chambre de cuisson (100),
    l'ensemble de porte comprend :
    une vitre avant (222) définissant une partie avant de l'ensemble de porte ;
    des première (224), deuxième (226) et troisième (228) vitres internes disposées derrière la vitre avant ;
    au moins un composant de cadre de porte (260) supportant les vitres avant et interne ;
    une pluralité d'éléments de guidage de vitre (264, 266, 267, 268) formés d'un seul tenant avec le composant de cadre de porte pour supporter les vitres internes ; caractérisé en ce que l'ensemble de porte comprend :
    au moins un ressort de retenue (280) comprenant une bande métallique allongée, le ressort de retenue étant agencé pour recevoir les vitres internes et adapté pour limiter le mouvement des vitres internes,
    où le ressort de retenue comprend une première partie d'insertion (282) dans laquelle la première vitre interne est insérée de manière fixe, une deuxième partie d'insertion (284) dans laquelle la deuxième vitre interne est insérée de manière fixe, et une partie tampon (286) formée entre les première et deuxième parties d'insertion pour fonctionner en tant que tampon entre les première et deuxième parties d'insertion,
    où les première et deuxième parties d'insertion (282, 284) ont des hauteurs différentes l'une de l'autre, et
    où les éléments de guidage de vitre comprennent des premiers éléments de guidage de vitre (264) pour guider et supporter une disposition d'un bord de surface avant de la première vitre interne, des deuxièmes éléments de guidage de vitre (266) pour guider et supporter une disposition des extrémités supérieure et inférieure de la première vitre interne, et des troisièmes éléments de guidage de vitre (267) supportant les dispositions d'un bord de surface avant et des extrémités supérieure et inférieure de la deuxième vitre interne, les troisièmes éléments de guidage de vitre (267) étant formés au-dessus des deuxièmes éléments de guidage de vitre (266) en étant courbés à deux reprises à partir du composant de cadre de porte (260).
  2. Four selon la revendication 1, dans lequel la partie tampon se présente sous une forme de rainure incurvée dans une direction opposée à celles des première et deuxième parties d'insertion.
  3. Four selon la revendication 1 ou 2, dans lequel le ressort de retenue comprend en outre une partie d'extension (285) s'étendant à partir d'une extrémité terminale définissant la deuxième partie d'insertion (284) et entrant en contact avec une surface de la troisième vitre interne (228).
  4. Four selon l'une quelconque des revendications précédentes, dans lequel le ressort de retenue est formé de métal.
  5. Four selon l'une quelconque des revendications précédentes, dans lequel les deuxièmes éléments de guidage de vitre (266) sont formés sur les extrémités supérieure et inférieure du composant de cadre de porte.
  6. Four selon l'une quelconque des revendications précédentes, dans lequel une disposition des deux extrémités latérales d'au moins l'une des première et deuxième vitres internes (224, 226) est guidée et supportée par une paroi latérale proximale du composant de cadre de porte.
  7. Four selon l'une des revendications précédentes, dans lequel les troisièmes éléments de guidage de vitre (267) sont formés sur les extrémités supérieure et inférieure du composant de cadre de porte.
  8. Four selon l'une des revendications précédentes, dans lequel les troisièmes éléments de guidage de vitre (267) comprennent une première partie courbée pour guider et supporter les extrémités supérieure et inférieure de la deuxième vitre interne et une deuxième partie courbée pour guider et supporter un bord de surface avant de la deuxième vitre.
  9. Four de l'une des revendications précédentes, dans lequel le four est un four électrique.
  10. Four de l'une des revendications précédentes, dans lequel la chambre de cuisson est définie à l'intérieur d'un corps de four, et comprenant en outre une ou plusieurs charnière(s) couplant le ou les plusieurs composant(s) de cadre de porte au corps de four.
EP05256257.6A 2004-10-13 2005-10-06 Four avec dispositif de support de vitres Not-in-force EP1647775B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020040081582A KR101118440B1 (ko) 2004-10-13 2004-10-13 전기오븐 도어의 내부유리 고정구조
KR1020040081581A KR100674720B1 (ko) 2004-10-13 2004-10-13 전기오븐 도어의 내부유리 장착구조

Publications (3)

Publication Number Publication Date
EP1647775A2 EP1647775A2 (fr) 2006-04-19
EP1647775A3 EP1647775A3 (fr) 2015-05-27
EP1647775B1 true EP1647775B1 (fr) 2017-09-20

Family

ID=35512014

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05256257.6A Not-in-force EP1647775B1 (fr) 2004-10-13 2005-10-06 Four avec dispositif de support de vitres

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EP (1) EP1647775B1 (fr)
AU (1) AU2005218023B2 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100774505B1 (ko) * 2006-05-29 2007-11-08 엘지전자 주식회사 복합 레인지용 도어 어셈블리
ATE532010T1 (de) 2007-12-28 2011-11-15 Vestel Beyaz Esya Sanayi Ve Ticaret As Backofentür
DE102010064092B4 (de) * 2010-12-23 2021-03-04 BSH Hausgeräte GmbH Garbehandlungsofen
ES2769637T3 (es) * 2012-05-10 2020-06-26 Miele & Cie Aparato doméstico
EP2851622B1 (fr) * 2013-09-19 2019-01-16 Electrolux Appliances Aktiebolag Une structure de support pour un premier élément en forme de feuille et procédé d'assemblage de celui-ci
DE102014216566A1 (de) * 2014-03-19 2015-09-24 BSH Hausgeräte GmbH Tür für ein Haushaltsgerät mit zumindest einem elastisch verformbaren Abdeckelement zwischen zwei Türscheiben sowie Haushaltsgerät mit einer derartigen Tür
TR201721904A2 (tr) 2017-12-26 2019-07-22 Arcelik As Isi dayanikli çerçeve i̇çeren bi̇r şeffaf pi̇şi̇ri̇ci̇

Citations (1)

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Publication number Priority date Publication date Assignee Title
US5735261A (en) * 1994-09-05 1998-04-07 Bosch-Siemens Hausgeraete Gmbh Oven door of a kitchen stove

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DE2205279B2 (de) * 1972-02-04 1978-11-09 Bosch-Siemens Hausgeraete Gmbh, 7000 Stuttgart Backofen-Turf enster
US3828763A (en) * 1973-05-14 1974-08-13 Gen Electric Oven door construction with front glass panel
US4253286A (en) * 1978-10-26 1981-03-03 Katona Joseph W Clip-aire oven door window
FR2756616A1 (fr) * 1996-11-29 1998-06-05 Soremam Porte pour une enceinte a cuire et a rotir d'un four
ES2425936T3 (es) * 1999-08-11 2013-10-18 Electrolux Rothenburg Gmbh Factory And Development Puerta para un aparato, en particular un horno de cocción, con cuerpos restauradores elásticos para sujetar las hojas
DE29914007U1 (de) * 1999-08-11 1999-10-21 Aeg Hausgeraete Gmbh Tür für ein Gerät, insbesondere einen Garofen, mit unverwechselbar montierbaren Scheiben
DE10011582C2 (de) * 2000-03-09 2003-08-21 Aeg Hausgeraete Gmbh Backofen
JP3913155B2 (ja) * 2002-10-03 2007-05-09 パロマ工業株式会社 グリル

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5735261A (en) * 1994-09-05 1998-04-07 Bosch-Siemens Hausgeraete Gmbh Oven door of a kitchen stove

Also Published As

Publication number Publication date
AU2005218023B2 (en) 2010-04-22
EP1647775A2 (fr) 2006-04-19
EP1647775A3 (fr) 2015-05-27
AU2005218023A1 (en) 2006-04-27

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