EP0110143A1 - Gerät mit Kochraum - Google Patents
Gerät mit Kochraum Download PDFInfo
- Publication number
- EP0110143A1 EP0110143A1 EP83110752A EP83110752A EP0110143A1 EP 0110143 A1 EP0110143 A1 EP 0110143A1 EP 83110752 A EP83110752 A EP 83110752A EP 83110752 A EP83110752 A EP 83110752A EP 0110143 A1 EP0110143 A1 EP 0110143A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- muffle
- enclosure
- cooking chamber
- chamber according
- insulating material
- 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.)
- Granted
Links
- 238000010411 cooking Methods 0.000 title claims abstract description 41
- 239000011810 insulating material Substances 0.000 claims abstract description 21
- 238000010438 heat treatment Methods 0.000 claims abstract description 13
- 239000000463 material Substances 0.000 claims abstract description 7
- 239000006260 foam Substances 0.000 claims description 11
- 238000009413 insulation Methods 0.000 claims description 9
- 239000012212 insulator Substances 0.000 claims description 6
- 239000008187 granular material Substances 0.000 claims description 5
- 229910052500 inorganic mineral Inorganic materials 0.000 claims description 4
- 239000011707 mineral Substances 0.000 claims description 4
- 239000007849 furan resin Substances 0.000 claims description 3
- 239000002557 mineral fiber Substances 0.000 claims description 3
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 2
- 239000000835 fiber Substances 0.000 claims description 2
- 239000011521 glass Substances 0.000 claims description 2
- 239000010445 mica Substances 0.000 claims description 2
- 229910052618 mica group Inorganic materials 0.000 claims description 2
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N phenol group Chemical group C1(=CC=CC=C1)O ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 claims description 2
- 239000005011 phenolic resin Substances 0.000 claims description 2
- 229920002635 polyurethane Polymers 0.000 claims description 2
- 239000004814 polyurethane Substances 0.000 claims description 2
- 239000011347 resin Substances 0.000 claims description 2
- 229920005989 resin Polymers 0.000 claims description 2
- 239000004753 textile Substances 0.000 claims description 2
- 210000002268 wool Anatomy 0.000 claims 2
- 239000000843 powder Substances 0.000 claims 1
- 239000011435 rock Substances 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 239000002184 metal Substances 0.000 description 6
- 239000002985 plastic film Substances 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000010425 asbestos Substances 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 238000005253 cladding Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000004534 enameling Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000011491 glass wool Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000011490 mineral wool Substances 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 229910052895 riebeckite Inorganic materials 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
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
- F24C15/34—Elements and arrangements for heat storage or insulation
Definitions
- the invention relates to an appliance comprising at least one cooking chamber, said chamber being delimited by a muffle of generally parallelepiped shape, open on one side, heating elements being arranged inside and / or outside the muffle in an adjoining enclosure, a thermally insulating material covering the side walls of the muffle and said adjoining enclosure in the event of the presence thereof.
- side walls of the muffle denotes the four walls of the muffle adjacent to the front face of said muffle.
- the aim is to bring the enclosure as quickly as possible to its operating temperature, and with the least heat loss possible, to limit energy consumption.
- the temperature rise of the enclosure is relatively long because the losses of calories by conduction in the chassis of the apparatus are very significant and these losses of calories result in an increase in the temperature of the external walls of the packaging of the device.
- the standards of use in this area impose a maximum temperature of the outer walls of the casing of a cooking appliance. This temperature must not exceed 100 ° C for non-built-in appliances and 90 ° C for built-in appliances. It is therefore necessary to eliminate the calories lost by the enclosure by interposing, between the chassis and the outer casing, chimneys which allow air circulation discharging the calories by free convection, or forced if a fan is incorporated.
- Patent FR-2,193,180 from the applicant shows a cooking enclosure delimited by a thermally insulated muffle externally placed inside a chassis which is itself thermally insulated externally and on which an outer sheet metal covering is fixed.
- This design therefore uses three sheet thicknesses (a muffle, a chassis and an external covering), however, presents some of the thermal drawbacks mentioned in the previous chapter, since the assembly of the three sheet thicknesses creates thermal bridges and the calories lost by the enclosure must then be eliminated by chimneys located between the chassis and the exterior cladding.
- This design also has mechanical drawbacks, since the manufacturing is made relatively complex by numerous welding sheet metal and enameling operations.
- the present invention makes it possible to eliminate the thermal drawbacks of the prior art by proposing an appliance with a cooking enclosure having no thermal bridges and thus limiting the loss of calories from the enclosure by conduction.
- This invention also makes it possible to reduce the mechanical drawbacks, by eliminating certain delicate manufacturing operations necessary in the prior art, by making easier the construction of the basic structure of the device because this basic structure (enclosure - heat-insulating - chassis - dressing) is carried out late during the manufacturing process.
- This resulting ease of handling makes it possible to envisage robotization of the first stages of assembly, before obtaining the basic structure of the device.
- the mounting of the other sub-assemblies, for example the doors and tables, is very easy around the chassis of the present invention.
- the subject of the present invention is an appliance comprising at least one cooking enclosure, said enclosure being delimited by a muffle of generally parallelepiped shape, open on one face, heating elements being arranged inside and / or outside the muffle in an adjoining enclosure, a thermally insulating material covering the side walls of the muffle and of said contiguous enclosure, in the presence of the latter, constituting the core of the chassis of the apparatus and participating in the constitution of a structure at least partially producing the external walls of this apparatus, characterized in that the material is overmolded on the side walls of the muffle and of said contiguous enclosure in the presence of the latter.
- the thermally insulating material is in the form of a foam.
- the foam is based on organic resins, such as polyurethane, phenolic or furan resins, but it can also be based on expanded mineral materials.
- organic resins such as polyurethane, phenolic or furan resins, but it can also be based on expanded mineral materials.
- the apparatus comprises between the muffle and the thermally insulating material, a primary insulator comprising at least one layer.
- the cooking enclosure is delimited by a muffle 1 having an open face surrounded by a flange 3 provided with protruding parts 4 serving to position the muffle on the front 6 of the chassis 2.
- Brackets 5 placed at the rear of the muffle and perforated to limit heat loss, ensure the fixing of the muffle on the rear sheet 7 of the chassis 2.
- This chassis 2 is therefore composed of four welded parts between them, a facade 6, a rear plate 7 and a box 8 composed of two half-edges.
- an external covering 9 and 9 ′ is fixed between the front panel 6 and the rear plate 7 thus delimiting two chimneys between the chassis and the external covering.
- the muffle 1 coated on at least four of its faces with an insulation 11.
- the box 8 is covered externally, on its lateral parts and on its upper part, by an insulation 13, and internally on a lower part 8 ′ by an insulator 14.
- a chimney 10 allows air circulation, between the insulated box 8 and the outer covering 9 ′, symbolized by an arrow F. It is the same with the on the other side of the figure, a chimney is formed between the box 8, and the external covering 9.
- Heating elements 17, 18 are present, in the example described, inside the cooking enclosure.
- the cooking enclosure is delimited by a muffle 20, for example of enamelled steel, having an open front face surrounded by a flange 21 which serves as a support for the joint sealing of an access door (not shown) to the enclosure, and also having four side walls designated below: sole face 22, upper face 23, sides 24 and 25.
- a rear plate 27 is attached to the muffle 20, and thermally insulated independently of the lateral insulation of the muffle.
- Heating elements 41 are placed inside the muffle, and the latter is covered on its sole face, its upper face 23, its two sides 24, 25 by an insulating material 50.
- This insulating material constitutes the core of the chassis of the device formed by four side walls 51, 52, 53, 54; the walls 51, 52 being extended at the bottom and at the top to form the two outer side walls of the cooking appliance.
- These walls 51, 52 can constitute lateral cheeks which protrude from the front, to protect adjacent furniture.
- the insulating material 50 can be covered externally on its side walls 51, 52 with sheets 55, 56 of metal or plastic constituting an external covering, contributing to the rigidity of the assembly.
- a metal piece 40 of thin thickness and / or perforated so as to limit the heat transmission to the outside.
- FIG. 4 we see on the uncut part of the enclosure a heating element 41, the rim 21 of the muffle 20, the wall 51 of the insulating material 50, the metallic piece 40 of small thickness, and the metallic sheet 56 or plastic covering the outside wall 51.
- a heating element 41 and the various components of the cooking appliance that is to say the muffle 20, the insulating material 50 having walls 52, 53, 54, and a metallic or plastic sheet 55, externally covering the wall 52.
- the insulating material 50 therefore has a general shape in H, the two branches of H being constituted by the side walls 51, 52.
- These two branches can allow the establishment of the other components of the appliance such as, storage chest under the cooking chamber and hob above the cooking chamber.
- the insulating material can be obtained by casting or injecting a foam which has sufficient thermal characteristics to absorb the calories lost by the muffle reaching 300 ° C. in the case of a cooking appliance with manual or catalytic cleaning and approximately 500 ° C in the case of a pyrolytic cleaning appliance, and the mechanical characteristics necessary for good rigidity of the cooking appliance.
- Insulating hollow bodies can also be embedded in the insulating material in order to reduce the cost price of the cooking appliance, without reducing the thermal and of this enclosure.
- the foam is based on furan resins, it can optionally be added fillers to increase the mechanical resistance and adjust the coefficient of thermal conductivity.
- the density of the foam can also be varied to obtain the same results.
- the edges of the insulating material can be protected by metal rods which will increase the rigidity of the device.
- the muffle 20 has on the outside an adjoining enclosure 60 where heating elements 61 are placed. It is understood that the cooking enclosure can only comprise heating elements 41 as shown in FIG. 3, or only the heating elements 61 inside the adjoining enclosure, or in combination with the heating elements 41 and 61.
- This contiguous enclosure is placed under the bottom face 22 of the muffle, and this contiguous enclosure 60, the upper face 23 and the two sides 24, 25 of the muffle are covered by a primary insulator 30 which may comprise several layers, for example, a mattress based on mineral fibers (silica-alumina, glass wool, rock wool) which can be deposited by flocking, or preconstituted in plates.
- a primary insulator 30 which may comprise several layers, for example, a mattress based on mineral fibers (silica-alumina, glass wool, rock wool) which can be deposited by flocking, or preconstituted in plates.
- This primary insulator may also be formed from pulverulent materials compressed and maintained by textile envelopes, mineral foams, for example glass or asbestos foams, granules of expanded mica, or other insulating granules.
- the insulating material 50 has the same characteristics as those described in the first embodiment.
- a heating element 41 placed in the adjoining enclosure 61 and other components of the cooking appliance, the muffle 20, the insulation 30, the insulating material 50 having walls 52, 53 54, and a metal or plastic sheet 55, externally covering the wall 52.
- this appliance with a cooking enclosure can be a stove using all types of energy, a single built-in oven, or a cooking appliance with several speakers.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Electric Stoves And Ranges (AREA)
- Baking, Grill, Roasting (AREA)
- Muffle Furnaces And Rotary Kilns (AREA)
- Cookers (AREA)
- Tunnel Furnaces (AREA)
- Electric Ovens (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT83110752T ATE24600T1 (de) | 1982-10-29 | 1983-10-27 | Geraet mit kochraum. |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR8218163A FR2535441B1 (fr) | 1982-10-29 | 1982-10-29 | Appareil a enceinte de cuisson |
FR8218163 | 1982-10-29 | ||
FR8302576A FR2541432B1 (fr) | 1983-02-17 | 1983-02-17 | Appareil a enceinte de cuisson |
FR8302576 | 1983-02-17 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0110143A1 true EP0110143A1 (de) | 1984-06-13 |
EP0110143B1 EP0110143B1 (de) | 1986-12-30 |
Family
ID=26223128
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP83110752A Expired EP0110143B1 (de) | 1982-10-29 | 1983-10-27 | Gerät mit Kochraum |
Country Status (7)
Country | Link |
---|---|
US (1) | US4590360A (de) |
EP (1) | EP0110143B1 (de) |
BR (1) | BR8305965A (de) |
CA (1) | CA1224341A (de) |
DE (1) | DE3368754D1 (de) |
ES (1) | ES284966Y (de) |
PT (1) | PT77562B (de) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2620521A1 (fr) * | 1987-09-15 | 1989-03-17 | Licentia Gmbh | Moufle de four a cuire et a rotir |
EP0501118A2 (de) * | 1991-02-25 | 1992-09-02 | Heraeus Kulzer GmbH | Dentalofen |
DE10051923A1 (de) * | 2000-10-19 | 2002-05-16 | Aeg Hausgeraete Gmbh | Backgerät und Herstellungsverfahren dafür |
FR2893391A1 (fr) * | 2005-11-16 | 2007-05-18 | Const Isothrmiques Bontami C I | Dispositif combine four-refrigerateur |
EP2275746A3 (de) * | 2009-07-14 | 2012-09-12 | BSH Bosch und Siemens Hausgeräte GmbH | Wärmeisolierungskörper, Satz aus mehreren Wärmeisolierungskörpern, Haushaltsofen mit einer Wärmeisolierung und Verfahren zum Anbringen einer Wärmeisolierung |
EP3093562A1 (de) * | 2015-05-12 | 2016-11-16 | Whirlpool Corporation | Isoliersystem für ein kochgerät mit einer vielzahl von mikrokügelchenfolien |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3519350A1 (de) * | 1985-05-30 | 1986-12-04 | E.G.O. Elektro-Geräte Blanc u. Fischer, 7519 Oberderdingen | Strahlungs-heizeinheit |
US6008478A (en) * | 1996-12-05 | 1999-12-28 | Whirlpool Corporation | Heating element support system for oven |
DE10354536A1 (de) * | 2003-11-12 | 2005-06-16 | E.G.O. Elektro-Gerätebau GmbH | Wärmedämmung für Heizeinrichtung und Verwendung von geschäumtem mineralischen Material für einen Wärmedämmformkörper einer Heizeinrichtung |
IT1394140B1 (it) * | 2009-04-09 | 2012-05-25 | Indesit Co Spa | Elettrodomestico per la preparazione o la conservazione di alimenti |
AU2016218046B2 (en) * | 2015-02-10 | 2021-03-11 | Electrolux Appliances Aktiebolag | Oven door and oven comprising an oven door |
US11000154B1 (en) * | 2017-10-14 | 2021-05-11 | Dale A Brandt, Sr. | Low oxide structures |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR946923A (fr) * | 1947-05-19 | 1949-06-17 | Perfectionnements apportés aux fours de cuisinières électriques | |
DE3109328A1 (de) * | 1981-03-12 | 1982-09-23 | Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt | Back- und bratofenmuffel |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1657205A (en) * | 1925-11-12 | 1928-01-24 | Bernard Gloekler Company | Electric bake oven |
US2552641A (en) * | 1946-01-12 | 1951-05-15 | Willard L Morrison | Heat insulated container having foamed plastic insulation |
US2607876A (en) * | 1949-10-31 | 1952-08-19 | Richard L Bergen | Electric heating device |
US3155814A (en) * | 1961-07-31 | 1964-11-03 | Radiant Electronic Products Co | Infrared radiant heating oven |
US3336465A (en) * | 1964-12-07 | 1967-08-15 | Gen Electric | Domestic oven with self-cleaning bottom wall |
US3626155A (en) * | 1970-11-30 | 1971-12-07 | Irex Corp | Electric oven |
FR2193180B1 (de) * | 1972-07-21 | 1975-03-07 | Cepem | |
US4286143A (en) * | 1978-09-05 | 1981-08-25 | Uop Inc. | Heater assembly |
-
1983
- 1983-10-27 DE DE8383110752T patent/DE3368754D1/de not_active Expired
- 1983-10-27 EP EP83110752A patent/EP0110143B1/de not_active Expired
- 1983-10-27 BR BR8305965A patent/BR8305965A/pt not_active IP Right Cessation
- 1983-10-27 ES ES1983284966U patent/ES284966Y/es not_active Expired
- 1983-10-27 PT PT77562A patent/PT77562B/pt not_active IP Right Cessation
- 1983-10-27 US US06/546,226 patent/US4590360A/en not_active Expired - Fee Related
- 1983-10-28 CA CA000439913A patent/CA1224341A/fr not_active Expired
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR946923A (fr) * | 1947-05-19 | 1949-06-17 | Perfectionnements apportés aux fours de cuisinières électriques | |
DE3109328A1 (de) * | 1981-03-12 | 1982-09-23 | Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt | Back- und bratofenmuffel |
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2620521A1 (fr) * | 1987-09-15 | 1989-03-17 | Licentia Gmbh | Moufle de four a cuire et a rotir |
EP0501118A2 (de) * | 1991-02-25 | 1992-09-02 | Heraeus Kulzer GmbH | Dentalofen |
EP0501118A3 (en) * | 1991-02-25 | 1995-02-22 | Heraeus Kulzer Gmbh | Dental oven |
DE10051923A1 (de) * | 2000-10-19 | 2002-05-16 | Aeg Hausgeraete Gmbh | Backgerät und Herstellungsverfahren dafür |
DE10051923B4 (de) * | 2000-10-19 | 2005-05-04 | AEG Hausgeräte GmbH | Backgerät und Herstellungsverfahren dafür |
FR2893391A1 (fr) * | 2005-11-16 | 2007-05-18 | Const Isothrmiques Bontami C I | Dispositif combine four-refrigerateur |
EP1793175A1 (de) * | 2005-11-16 | 2007-06-06 | Constructions Isothermiques Bontami - C.I.B. | Ofenvorrichtung |
EP2275746A3 (de) * | 2009-07-14 | 2012-09-12 | BSH Bosch und Siemens Hausgeräte GmbH | Wärmeisolierungskörper, Satz aus mehreren Wärmeisolierungskörpern, Haushaltsofen mit einer Wärmeisolierung und Verfahren zum Anbringen einer Wärmeisolierung |
EP3093562A1 (de) * | 2015-05-12 | 2016-11-16 | Whirlpool Corporation | Isoliersystem für ein kochgerät mit einer vielzahl von mikrokügelchenfolien |
US9630381B2 (en) | 2015-05-12 | 2017-04-25 | Whirlpool Corporation | Insulation system for a cooking appliance incorporating a plurality of microsphere sheets |
US11035577B2 (en) | 2015-05-12 | 2021-06-15 | Whirlpool Corporation | Insulation system for a cooking appliance incorporating a plurality of microsphere sheets |
Also Published As
Publication number | Publication date |
---|---|
PT77562A (fr) | 1983-11-01 |
ES284966U (es) | 1986-06-16 |
ES284966Y (es) | 1987-03-01 |
PT77562B (fr) | 1986-07-15 |
US4590360A (en) | 1986-05-20 |
DE3368754D1 (en) | 1987-02-05 |
CA1224341A (fr) | 1987-07-21 |
EP0110143B1 (de) | 1986-12-30 |
BR8305965A (pt) | 1984-06-05 |
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