EP0723116A2 - Oven door with natural ventilation cooling - Google Patents
Oven door with natural ventilation cooling Download PDFInfo
- Publication number
- EP0723116A2 EP0723116A2 EP96830022A EP96830022A EP0723116A2 EP 0723116 A2 EP0723116 A2 EP 0723116A2 EP 96830022 A EP96830022 A EP 96830022A EP 96830022 A EP96830022 A EP 96830022A EP 0723116 A2 EP0723116 A2 EP 0723116A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- door
- glass
- uprights
- ovens
- domestic gas
- 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.)
- Withdrawn
Links
- 238000001816 cooling Methods 0.000 title description 4
- 238000009423 ventilation Methods 0.000 title description 2
- 239000011521 glass Substances 0.000 claims abstract description 40
- 210000002105 tongue Anatomy 0.000 claims abstract description 10
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 3
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 3
- 238000004026 adhesive bonding Methods 0.000 claims description 5
- 239000011796 hollow space material Substances 0.000 claims description 5
- 239000011248 coating agent Substances 0.000 claims description 2
- 238000000576 coating method Methods 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 description 5
- 238000009413 insulation Methods 0.000 description 4
- 239000011810 insulating material Substances 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000010411 cooking Methods 0.000 description 1
- 239000000110 cooling liquid Substances 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 125000006850 spacer group Chemical group 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
- F24C15/02—Doors specially adapted for stoves or ranges
- F24C15/04—Doors specially adapted for stoves or ranges with transparent panels
- F24C15/045—Doors specially adapted for stoves or ranges with transparent panels being dismountable, e.g. giving access for cleaning
-
- 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
- F24C15/006—Arrangements for circulation of cooling air
Definitions
- the present invention relates to doors for ovens and domestic gas cookers, and particularly to a door with natural ventilation cooling.
- the typical structure of an oven door includes an outer door and an inner door, both made of punched sheet, with an insulating material inserted therebetween. These two sheets have a central opening, closed by a double glass, which acts as a window so as to able to check the cooking without opening the door. Since this is the portion which causes most of the loss of heat, due to the fact that it can not contain the insulating material arranged in the rest of the structure, various systems have been studied to lower the temperature of the outer glass.
- the object of the present invention is to provide an oven door which overcomes the above-mentioned limits of complexity and lack of manufacturing adaptability of prior art doors.
- a first fundamental advantage of the oven door according to the present invention is its structural simplicity, which allows its manufacturing at low costs both for the production of the members and the assembly thereof.
- a second advantage of said oven door is the great ease of change of its size, since it is sufficient to cut the glasses and the sections of a different size with no need for new tools.
- the oven door according to the present invention is made up of an outer glass 1 and an inner glass 2 fixed in parallel and spaced relationship onto a pair of side uprights 3 consisting of a section, preferably made of aluminum.
- Hinges 4 are positioned inside uprights 3, at the lower end thereof, for the connection to the oven base and the conventional opening of the door through a downward rotation around a horizontal axis. Said opening is carried out by gripping a handle 5 mounted on the door near the top thereof.
- uprights 3 have a substantially U-shaped cross-section, facing outwards, whose external end terminates with a tongue 6 which extends laterally.
- a groove 7 is formed, at the internal corner of upright 3, wherein the inner glass 2 is inserted.
- Said glass 2 covers the whole front of the oven, yet it is smaller than the outer glass 1 which extends laterally beyond tongue 6 so as to cover completely uprights 3, to which it is fixed preferably by gluing.
- the inner glass 2 covers the opening of the oven front, it assures a heat insulation higher than that of a sheet door which conducts heat better. Said insulation may be further improved by applying a heat-reflecting coating to the inner surface of glass 2. Furthermore, said glass 2 can be fixed into grooves 7 so as to be dismountable. thus allowing an easy cleaning also of the surfaces of glasses 1 and 2 facing the hollow space.
- a second groove may be formed between groove 7 and the point where glass 1 abuts, so as to insert a third intermediate glass which further increases the heat insulation capability of the door.
- the opening handle 5 in the first embodiment shown in fig. 1 it has an elongated U-shape extending along the full width of the door to the tongues 6 of uprights 3.
- Handle 5 is preferably fixed to said tongues 6 by means of fasteners, such as screws or the like, which engage the end of handle 5 by going through the outer glass 1.
- fasteners such as screws or the like
- handle 5 is not directly fixed to uprights 3 but to a crosspiece 8 which is inserted at the top of uprights 3 in abutment with the top edge of the outer glass 1.
- This solution avoids the need to make holes in tongues 6 and glass 1, also leaving freedom of width to handle 5, while the vertical position thereof is fixed and an additional member such as crosspiece 8 is required.
- crosspiece 8 also acts as a "lid" for the hollow space between the two glasses, by closing uprights 3 at the top while leaving only passage holes for the circulation of air.
- said holes are suitably formed only on the inner and upper side of crosspiece 8, as indicated by the arrows in fig.2.
- a further embodiment includes the gluing of handle 5 to the outer glass 1, with full freedom of position and size of the handle.
- the joining surface has an adequate area so as to achieve a sufficiently strong fixing, whereby the gluing will preferably extend to the whole width of the handle.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Specific Sealing Or Ventilating Devices For Doors And Windows (AREA)
- Electric Stoves And Ranges (AREA)
Abstract
Description
- The present invention relates to doors for ovens and domestic gas cookers, and particularly to a door with natural ventilation cooling.
- It is known that one of the main characteristics that an oven door must have is heat insulation, i.e. the property of letting through its structure as little heat as possible. This is required mainly to prevent the user from getting burnt by accidentally touching the outer surface of the door while the oven is working. Furthermore, a lower loss of heat implies a greater efficiency of the oven and therefore lower energy consumption.
- To this purpose, the typical structure of an oven door includes an outer door and an inner door, both made of punched sheet, with an insulating material inserted therebetween. These two sheets have a central opening, closed by a double glass, which acts as a window so as to able to check the cooking without opening the door. Since this is the portion which causes most of the loss of heat, due to the fact that it can not contain the insulating material arranged in the rest of the structure, various systems have been studied to lower the temperature of the outer glass.
- An effective solution is disclosed in US pat. n.4.014.312, wherein the structure of the door includes a vertical plate which divides it into an inner portion containing insulating material and an outer hollow portion wherein air can circulate. Since the two glasses of the window are placed one inside and one outside of the dividing plate, air can flow therebetween by natural circulation and remove by convection the heat coming from the oven. Such a solution, though effective, however implies a rather complicated structure which is therefore expensive to manufacture. Moreover, this kind of door has no adaptability to different oven sizes, since each door size requires different punches for the outer and inner sheets, with the significant cost increase deriving therefrom.
- This limit is also found in other kinds of door having a window inserted within a sheet structure, even if the latter may simpler and cheaper. For example, the French patent n.2.600.757 discloses an oven door having a conventional structure, which also includes an additional outer glass as wide as the door and secured thereto by means of spacers which create a hollow space wherein the cooling air naturally circulates. It is clear that such a solution does not solve the above-illustrated problems of structural complexity, since a greater simplicity of the sheet portion comes along with the addition of a further glass member which implies a thicker and heavier door.
- What said above is even more true for doors including more complicated and sophisticated cooling systems. These systems may range from a simple fan causing a forced two-way circulation within the door, as disclosed in the Italian patent n.1.237.294, to a door with an evacuated sealed hollow space containing a cooling liquid which undergoes a cycle of evaporation and subsequent condensation by means of a fan similar to the above-mentioned fan.
- Therefore, the object of the present invention is to provide an oven door which overcomes the above-mentioned limits of complexity and lack of manufacturing adaptability of prior art doors.
- This object is achieved by means of an oven door having the characteristics cited in
claim 1. - A first fundamental advantage of the oven door according to the present invention is its structural simplicity, which allows its manufacturing at low costs both for the production of the members and the assembly thereof.
- A second advantage of said oven door is the great ease of change of its size, since it is sufficient to cut the glasses and the sections of a different size with no need for new tools.
- These and other advantages and characteristics of the oven door according to the present invention will be apparent to those skilled in the art from the following detailed description of two embodiments thereof referring to the annexed drawings wherein:
- Fig. 1 is a top plan view of a first embodiment of the door according to the invention; and
- Fig.2 is a side see-through view of a second embodiment of the present door.
- With reference to said figures, there is seen that the oven door according to the present invention is made up of an
outer glass 1 and aninner glass 2 fixed in parallel and spaced relationship onto a pair ofside uprights 3 consisting of a section, preferably made of aluminum. Hinges 4 are positioned insideuprights 3, at the lower end thereof, for the connection to the oven base and the conventional opening of the door through a downward rotation around a horizontal axis. Said opening is carried out by gripping ahandle 5 mounted on the door near the top thereof. - As it can be seen in the top view of fig. 1,
uprights 3 have a substantially U-shaped cross-section, facing outwards, whose external end terminates with a tongue 6 which extends laterally. A groove 7 is formed, at the internal corner of upright 3, wherein theinner glass 2 is inserted. Saidglass 2 covers the whole front of the oven, yet it is smaller than theouter glass 1 which extends laterally beyond tongue 6 so as to cover completelyuprights 3, to which it is fixed preferably by gluing. - It should be noted that since the
inner glass 2 covers the opening of the oven front, it assures a heat insulation higher than that of a sheet door which conducts heat better. Said insulation may be further improved by applying a heat-reflecting coating to the inner surface ofglass 2. Furthermore, saidglass 2 can be fixed into grooves 7 so as to be dismountable. thus allowing an easy cleaning also of the surfaces ofglasses - It is clear that the cross-section of
uprights 3 may be somewhat changed in case of specific manufacturing needs. For example, a second groove may be formed between groove 7 and the point whereglass 1 abuts, so as to insert a third intermediate glass which further increases the heat insulation capability of the door. - As far as the
opening handle 5 is concerned, in the first embodiment shown in fig. 1 it has an elongated U-shape extending along the full width of the door to the tongues 6 ofuprights 3.Handle 5 is preferably fixed to said tongues 6 by means of fasteners, such as screws or the like, which engage the end ofhandle 5 by going through theouter glass 1. In this case the width ofhandle 5 is fixed, but the vertical fixing position can be freely selected. - In the second embodiment shown in fig.2,
handle 5 is not directly fixed touprights 3 but to a crosspiece 8 which is inserted at the top ofuprights 3 in abutment with the top edge of theouter glass 1. This solution avoids the need to make holes in tongues 6 andglass 1, also leaving freedom of width to handle 5, while the vertical position thereof is fixed and an additional member such as crosspiece 8 is required. - However, crosspiece 8 also acts as a "lid" for the hollow space between the two glasses, by closing
uprights 3 at the top while leaving only passage holes for the circulation of air. In order to prevent hot air from flowing directly ontohandle 5, said holes are suitably formed only on the inner and upper side of crosspiece 8, as indicated by the arrows in fig.2. - A further embodiment, not illustrated in the drawings, includes the gluing of
handle 5 to theouter glass 1, with full freedom of position and size of the handle. However, in this case it is required that the joining surface has an adequate area so as to achieve a sufficiently strong fixing, whereby the gluing will preferably extend to the whole width of the handle. - As already mentioned, it is apparent that the above-described and illustrated embodiments of the oven door according to the invention are only examples susceptible of various changes. In particular, the cross-section of
uprights 3 and the methods for mutually coupling and fixing the members which make up the door may be freely adapted according to the needs.
Claims (8)
- A door for ovens and domestic gas cookers, characterized in that it is made up of an outer glass (1) and an inner glass (2) fixed in parallel and spaced relationship onto a pair of side uprights (3) each consisting of a section, preferably made of aluminum, inside which a hinge (4) is positioned for the connection to the oven base, as well as a handle (5) mounted on the door near the top thereof, said inner glass (2) having such a size as to cover the whole front of the oven.
- A door for ovens and domestic gas cookers according to claim 1, characterized in that the uprights (3) have a substantially U-shaped cross-section, facing outwards, whose external end terminates with a tongue (6) which extends laterally, and a groove (7) is formed, at the internal corner of the upright (3), wherein the inner glass (2) is inserted, preferably in a dismountable way, the outer glass (1) extending laterally beyond said tongues (6) so as to cover completely the uprights (3), to which it is fixed preferably by gluing.
- A door for ovens and domestic gas cookers according to claim 1 or 2, characterized in that the handle (5) is fixed onto a crosspiece (8) inserted at the top of the uprights (3) and acting as a lid for the hollow space between the two glasses by closing the uprights (3) at the top while leaving only passage holes for the circulation of air, said holes being formed only on the inner and upper side of the crosspiece (8).
- A door for ovens and domestic gas cookers according to claim 2, characterized in that the handle (5) is fixed onto the tongues (6) by means of fasteners which engage the ends of the handle (5) by going through the outer glass (1).
- A door for ovens and domestic gas cookers according to claim 1 or 2, characterized in that the handle (5) is fixed onto the outer glass (1) by gluing.
- A door for ovens and domestic gas cookers according to one of the preceding claims, characterized in that the inner surface of the inner glass (2) is provided with a heat-reflecting coating.
- A door for ovens and domestic gas cookers according to one of the preceding claims, characterized in that it further includes a third glass placed between the outer glass (1) and the inner glass (2).
- A door for ovens and domestic gas cookers according to claim 7, characterized in that the third glass is mounted in a second groove formed on the uprights (3).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ITMI950108 | 1995-01-23 | ||
ITMI950108A IT1273441B (en) | 1995-01-23 | 1995-01-23 | DOOR FOR OVEN WITH NATURAL VENTILATION COOLING |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0723116A2 true EP0723116A2 (en) | 1996-07-24 |
EP0723116A3 EP0723116A3 (en) | 1998-01-21 |
Family
ID=11370298
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP96830022A Withdrawn EP0723116A3 (en) | 1995-01-23 | 1996-01-22 | Oven door with natural ventilation cooling |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP0723116A3 (en) |
IT (1) | IT1273441B (en) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0811806B2 (en) † | 1996-06-05 | 2004-02-18 | AEG Hausgeräte GmbH | Door for closing the muffle of a baking oven |
DE10337439A1 (en) * | 2003-08-14 | 2005-03-24 | BSH Bosch und Siemens Hausgeräte GmbH | Oven, in particular with a device for pyrolytic self-cleaning |
US6904904B2 (en) | 2003-02-19 | 2005-06-14 | Electrolux Home Products Corporation N.V. | Cooking oven with a cooled door that permits pyrolysis |
EP1548367A2 (en) | 2003-12-22 | 2005-06-29 | Electrolux Home Products N.V. | Device for closing the cavity opening of a household appliance |
DE10360386A1 (en) * | 2003-12-22 | 2005-07-14 | Electrolux Home Products Corporation N.V. | Oven door, especially for a domestic cooking appliance, has outer and inner panes held in carriers with seals to give a gas-tight seal without convection between the panes |
US7703451B2 (en) * | 2006-04-24 | 2010-04-27 | Lg Electronics Inc. | Oven door |
EP2299179A1 (en) | 2009-08-26 | 2011-03-23 | Electrolux Home Products Corporation N.V. | Door for household appliance |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1399874A (en) | 1971-10-23 | 1975-07-02 | Creda Electric Ltd | Door for ovens and other heated chambers |
GB2250531A (en) | 1990-12-05 | 1992-06-10 | Stoves Ltd | Door for cooking appliance |
GB2290335A (en) | 1994-05-26 | 1995-12-20 | Stoves Ltd | Cantilever mounted oven door |
GB2290611A (en) | 1994-06-14 | 1996-01-03 | Blue Circle Domestic Appliance | Cooking oven doors |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
IT207743Z2 (en) * | 1986-05-29 | 1988-02-08 | Eurodomestici Ind Riunite | DOOR WITH SELF-SUPPORTING METAL FRAME, FOR DOMESTIC COOKING OVENS. |
DE4206820A1 (en) * | 1991-08-28 | 1993-03-04 | Bosch Siemens Hausgeraete | OVEN DOOR |
-
1995
- 1995-01-23 IT ITMI950108A patent/IT1273441B/en active IP Right Grant
-
1996
- 1996-01-22 EP EP96830022A patent/EP0723116A3/en not_active Withdrawn
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1399874A (en) | 1971-10-23 | 1975-07-02 | Creda Electric Ltd | Door for ovens and other heated chambers |
GB2250531A (en) | 1990-12-05 | 1992-06-10 | Stoves Ltd | Door for cooking appliance |
GB2290335A (en) | 1994-05-26 | 1995-12-20 | Stoves Ltd | Cantilever mounted oven door |
GB2290611A (en) | 1994-06-14 | 1996-01-03 | Blue Circle Domestic Appliance | Cooking oven doors |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0811806B2 (en) † | 1996-06-05 | 2004-02-18 | AEG Hausgeräte GmbH | Door for closing the muffle of a baking oven |
US6904904B2 (en) | 2003-02-19 | 2005-06-14 | Electrolux Home Products Corporation N.V. | Cooking oven with a cooled door that permits pyrolysis |
DE10337439A1 (en) * | 2003-08-14 | 2005-03-24 | BSH Bosch und Siemens Hausgeräte GmbH | Oven, in particular with a device for pyrolytic self-cleaning |
EP1548367A2 (en) | 2003-12-22 | 2005-06-29 | Electrolux Home Products N.V. | Device for closing the cavity opening of a household appliance |
DE10360386A1 (en) * | 2003-12-22 | 2005-07-14 | Electrolux Home Products Corporation N.V. | Oven door, especially for a domestic cooking appliance, has outer and inner panes held in carriers with seals to give a gas-tight seal without convection between the panes |
DE10360384A1 (en) * | 2003-12-22 | 2005-07-28 | Electrolux Home Products Corporation N.V. | Device for closing the access opening of an interior of a household appliance |
US7703451B2 (en) * | 2006-04-24 | 2010-04-27 | Lg Electronics Inc. | Oven door |
EP2299179A1 (en) | 2009-08-26 | 2011-03-23 | Electrolux Home Products Corporation N.V. | Door for household appliance |
Also Published As
Publication number | Publication date |
---|---|
IT1273441B (en) | 1997-07-08 |
EP0723116A3 (en) | 1998-01-21 |
ITMI950108A0 (en) | 1995-01-23 |
ITMI950108A1 (en) | 1996-07-23 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US5735261A (en) | Oven door of a kitchen stove | |
US4084571A (en) | See-through oven door with reticulated heat shield | |
CA1042744A (en) | Simplified oven door window | |
CA2414692C (en) | Oven door assembly | |
US6029411A (en) | Composite door and frame | |
US20130239484A1 (en) | Door for a Refrigerated Cabinet | |
CA1212878A (en) | Oven door | |
EP1795811B1 (en) | Oven | |
CA2780642C (en) | Household appliance having an oven door with an integral drip tray | |
EP1632150A2 (en) | Showcase | |
US4023554A (en) | Self-contained window unit for oven doors | |
RU2101451C1 (en) | Profiled member for heat-insulated door of refrigerator and propelled device with use of this member | |
EP0723116A2 (en) | Oven door with natural ventilation cooling | |
EP0687867A1 (en) | Cooking appliances | |
US4033321A (en) | Windowed oven doors | |
EP1647775B1 (en) | Oven with glass supporting structure | |
RU2343371C2 (en) | Door with insulating glazing and domestic appliance with such door | |
EP0549933A1 (en) | Oven door | |
US3766700A (en) | Decorative trim strip mounting means | |
US6693261B2 (en) | Electric stove to cook food, and the like | |
CA1056680A (en) | Window unit for use in oven doors | |
GB2099988A (en) | Composite panel structures e.g. oven doors | |
CN218096044U (en) | Automatic ventilation door group and integrated kitchen | |
EP0277923A2 (en) | A baking oven for food baking | |
JPH11280339A (en) | Upper frame construction for insulating sash |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
AK | Designated contracting states |
Kind code of ref document: A2 Designated state(s): DE ES FR GB SE |
|
PUAL | Search report despatched |
Free format text: ORIGINAL CODE: 0009013 |
|
TPAD | Observations filed by third parties |
Free format text: ORIGINAL CODE: EPIDOS TIPA |
|
AK | Designated contracting states |
Kind code of ref document: A3 Designated state(s): DE ES FR GB SE |
|
17P | Request for examination filed |
Effective date: 19980703 |
|
17Q | First examination report despatched |
Effective date: 19991230 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
18D | Application deemed to be withdrawn |
Effective date: 20000510 |