US20220214047A1 - Household cooking appliance including a non-welded oven cavity having a seal allowing pyrolytic cleaning - Google Patents
Household cooking appliance including a non-welded oven cavity having a seal allowing pyrolytic cleaning Download PDFInfo
- Publication number
- US20220214047A1 US20220214047A1 US17/142,289 US202117142289A US2022214047A1 US 20220214047 A1 US20220214047 A1 US 20220214047A1 US 202117142289 A US202117142289 A US 202117142289A US 2022214047 A1 US2022214047 A1 US 2022214047A1
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- United States
- Prior art keywords
- flange
- panel
- seal
- mechanically coupled
- cooking appliance
- 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.)
- Abandoned
Links
- 238000010411 cooking Methods 0.000 title claims abstract description 45
- 238000004140 cleaning Methods 0.000 title abstract description 27
- 238000003466 welding Methods 0.000 claims abstract description 6
- 239000007789 gas Substances 0.000 description 8
- 239000000463 material Substances 0.000 description 8
- 230000008878 coupling Effects 0.000 description 7
- 238000010168 coupling process Methods 0.000 description 7
- 238000005859 coupling reaction Methods 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 6
- 239000002184 metal Substances 0.000 description 6
- 238000010792 warming Methods 0.000 description 3
- 238000007792 addition Methods 0.000 description 2
- 239000003063 flame retardant Substances 0.000 description 2
- 238000005304 joining Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 229920000742 Cotton Polymers 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000011152 fibreglass Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000002648 laminated material Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 238000005201 scrubbing Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000007787 solid Substances 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
- F24C15/021—Doors specially adapted for stoves or ranges sealings for doors or transparent panel
-
- 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
- F24C15/08—Foundations or supports plates; Legs or pillars; Casings; Wheels
-
- 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
- F24C14/00—Stoves or ranges having self-cleaning provisions, e.g. continuous catalytic cleaning or electrostatic cleaning
- F24C14/02—Stoves or ranges having self-cleaning provisions, e.g. continuous catalytic cleaning or electrostatic cleaning pyrolytic type
Definitions
- the present invention is directed to a household cooking appliance including a non-welded oven cavity having a seal disposed between mechanically coupled panels, and more particularly, a non-welded oven cavity having at least one seal disposed between mechanically coupled panels for allowing pyrolytic cleaning of the non-welded oven cavity.
- Some conventional home cooking appliances may include a self-cleaning mode, such as a high temperature pyrolytic cleaning cycle.
- a so-called pyrolytic oven heats up the interior of the oven cavity to an extremely high temperature (e.g., approximately 400° C. or greater, 450° C. or greater, etc.) to reduce any foodstuff, spills, etc. on the interior surfaces of the oven cavity to a fine ash that can be easily wiped away once the oven cavity has cooled down, with no need for harsh oven-cleaning chemicals or intense scrubbing of the interior surfaces.
- an extremely high temperature e.g., approximately 400° C. or greater, 450° C. or greater, etc.
- Some conventional home cooking appliances may include a welded oven cavity having a plurality of panels welded together to form the oven cavity.
- Other conventional home cooking appliances may include a non-welded oven cavity, such as a cavity having a plurality of panels mechanically coupled together without welding.
- the manufacturing costs associated with producing a non-welded oven cavity may be less than a welded oven cavity, for example, since the manufacturing processes and facilities associated with producing a non-welded oven cavity may require less specialized, less complex, and/or less costly manufacturing equipment or manufacturing techniques, less capacity, less space, etc., than may otherwise be associated with the manufacturing of a welded oven cavity.
- a non-welded oven cavity typically is not suitable for, or capable of, use in an oven having a self-cleaning mode, such as a high temperature pyrolytic cleaning cycle, since the extreme temperatures within the interior of the oven cavity may cause movement or expansion of mechanical seams or joints of the non-welded oven cavity, thereby allowing hot air or gases to undesirably escape through the mechanical seams or joints of the non-welded oven cavity.
- a self-cleaning mode such as a high temperature pyrolytic cleaning cycle, typically cannot be provided in a conventional home cooking appliance having a non-welded oven cavity.
- the present invention solves these and other problems by providing a household cooking appliance comprising a non-welded oven cavity including a plurality of panels mechanically coupled together without welding and a seal disposed between mechanically coupled panels of the plurality of panels.
- the present invention can provide a non-welded oven cavity capable of preventing hot air or gases from escaping through mechanical seams or joints of the non-welded oven cavity during exposure to the extreme temperatures within the interior of the oven cavity associated with a self-cleaning mode, such as a high temperature pyrolytic cleaning cycle.
- a self-cleaning mode such as a high temperature pyrolytic cleaning cycle.
- the present invention can provide a household cooking appliance with desirable self-cleaning features, such as high temperature pyrolytic cleaning, while at the same time reducing manufacturing costs associated with the oven cavity as compared to a welded oven cavity.
- the seal can be configured to provide an airtight seal between the mechanically coupled panels of the plurality of panels, and more particularly, to provide a thermal seal or pyrolytic seal between the mechanically coupled panels of the plurality of panels.
- one or more of the mechanically coupled panels of the non-welded oven cavity can include one or more flanges adjacent to each other, with the seal being disposed between the flanges.
- the flanges can be mechanically coupled to each other with the seal disposed therebetween by at least one fixation element.
- the fixation elements can be centrally located and aligned along a longitudinal centerline of one or more of the flanges and/or the seal disposed between the flanges.
- one or more flanges can include an emboss extending along a longitudinal centerline of the flange.
- a pair of adjacent flanges can include matching embosses extending along a longitudinal centerline of each of the flanges.
- the seal can be disposed in the emboss or matching embosses between the mechanically coupled panels of the plurality of panels. A portion of the seal can be disposed in the emboss or matching embosses, or the seal can be disposed entirely within the emboss or matching embosses.
- the present invention recognizes that providing embosses on one or more of the flanges may result in a reduced amount of the flange being usable for fixation points. Moreover, in some instances, it may be desirable to provide fixation points on each side of the emboss or matching embosses to adequately secure the flanges to each other and to adequately secure the seal within the emboss between the flanges.
- the present invention further recognizes that aligning the fixation points on opposite sides of the emboss or matching embosses (e.g., aligning the fixation points in a direction perpendicular to the longitudinal centerline of the flanges or embosses), combined with the reduced size of the flange on either side of the emboss, may result in metal fatigue and failure of the mechanical coupling at such a location.
- the flanges can be mechanically coupled to each other by a plurality of fixation elements, wherein each of the plurality of fixation elements is alternately located on opposite sides of the emboss or matching embosses extending along the longitudinal centerline of the flanges or embosses.
- the fixation points on each side of the emboss or matching embosses are capable of adequately securing the flanges to each other and adequately securing the seal between the flanges, while at the same time, reducing the risk of, or avoiding altogether, metal fatigue and failure of the mechanical coupling at fixation locations.
- only one panel of the mechanically coupled panels may include a flange, while the other panel may include an adjacent surface.
- the seal can be disposed between the flange of the first panel and the surface of the second panel, with the flange of the first panel being mechanically coupled to the surface of the second panel with the seal therebetween.
- the flange of the first panel can be mechanically coupled to the surface of the second panel by one or more fixation elements and such fixation elements can be centrally located along a longitudinal centerline of the flange of the first panel.
- the fixation elements also can be centrally located along the longitudinal centerline of the seal.
- either or both of the flange of the first panel and the surface of the second panel can include an emboss or matching embosses extending along the longitudinal centerline of the flange, with the seal being disposed in the emboss or matching embosses.
- the flange of the first panel can be mechanically coupled to the surface of the second panel by a plurality of fixation elements, wherein each of the plurality of fixation elements is alternately located on opposite sides of the emboss or matching embosses extending along the longitudinal centerline of the flange or embosses, thereby adequately securing the flange to the surface and adequately securing the seal between the flange and the surface, while at the same time, reducing the risk of, or avoiding altogether, metal fatigue and failure of the mechanical coupling at the fixation locations.
- the seal can be a flat seal.
- the seal can have an oval cross-section, a circular cross-section, or other cross-sectional shape.
- the cross-section of the seal can correspond to at least a portion of a cross-section of an emboss formed in one or more flanges and/or surfaces of one of the panels.
- a welded oven cavity can include an oven cavity having a plurality of panels coupled together with welded seams or joints to form the oven cavity.
- a non-welded oven cavity can include a cavity having a plurality of panels mechanically coupled together at seams or joints with or without fixation elements to form the oven cavity.
- a non-welded oven cavity can include a cavity having a plurality of panels mechanically coupled to each other at seams or joints with one or more fasteners, such as with bolts, rivets, etc., and/or without fasteners, such as by clinching.
- fasteners such as with bolts, rivets, etc.
- the plurality of panels can be mechanically coupled together at seams or joints by various other mechanical fixation, assembly, or coupling devices or structures suitable for coupling or joining metal sheets.
- the present invention can provide both the cost savings of a non-welded oven cavity, as compared to a welded cavity, along with the ability to employ a pyrolytic self-cleaning feature, which would not feasibly be safe with conventional non-welded oven cavity systems.
- FIG. 1 is a schematic, partial cutaway view of a household cooking appliance, according to an exemplary embodiment of the invention
- FIG. 2 is a schematic front view of a household cooking appliance, according to an exemplary embodiment of the invention.
- FIG. 3 is a schematic perspective view of a non-welded oven cavity of a household cooking appliance, according to an exemplary embodiment of the invention.
- FIG. 4A is a schematic partial, cross-sectional view of panels of a non-welded oven cavity mechanically coupled together, according to an exemplary embodiment of the invention, and FIG. 4B is a schematic plan view of FIG. 4A ;
- FIG. 5A is another schematic partial, cross-sectional view of panels of a non-welded oven cavity mechanically coupled together, according to an exemplary embodiment of the invention, and FIG. 5B is a schematic plan view of FIG. 5A ;
- FIG. 6 is another schematic partial, cross-sectional view of panels of a non-welded oven cavity mechanically coupled together, according to an exemplary embodiment of the invention.
- FIG. 7 is another schematic partial, cross-sectional view of panels of a non-welded oven cavity mechanically coupled together, according to an exemplary embodiment of the invention.
- FIG. 8 is another schematic partial, cross-sectional view of panels of a non-welded oven cavity mechanically coupled together, according to an exemplary embodiment of the invention.
- FIG. 9 is schematic perspective view of panels of a non-welded oven cavity mechanically coupled together, according to an exemplary embodiment of the invention.
- FIGS. 1-9 illustrate exemplary embodiments of a household cooking appliance having a non-welded oven cavity with a seal disposed between mechanically coupled panels. Like reference numerals are used to identify similar features of the example embodiments in FIGS. 1-9 .
- the household cooking appliance 100 can include a standalone appliance, wall mounted appliance, such as a stand-alone oven, wall mounted oven, double oven, combination oven, countertop oven, or a freestanding range having one or more ovens.
- the household cooking appliance 100 can include a gas or electric wall oven (as shown, for example, in FIGS. 1-3 ), or a gas cooking range having one or more cooking or warming devices, such as a cooktop, gas oven, electric oven, steam oven, convection oven, and/or warming drawer.
- the household cooking appliance can include a plurality of oven cooking cavities.
- the exemplary household cooking appliance can include one or more doors, such as a baking oven door, a steam oven door, and/or a warming drawer door for providing access to one or more cavities within the housing.
- An example of a household cooking appliance 100 can include a housing 102 , a non-welded oven cavity 104 defining an interior oven cavity space 105 accessible through an opening in the non-welded oven cavity 104 , and an oven door 106 covering the opening and moveable about a hinge between an open position and a closed position.
- the household cooking appliance 100 can include a control panel 108 having a user input device 110 for controlling operation of one or more heating elements and/or circulating fans in the oven cavity 104 for performing various operations, such as a preheat operation, cooking operation, self-cleaning operation, such as a high temperature pyrolytic cleaning cycle, etc.
- the user input device 110 can include one or more control knobs, touch sensitive input devices, etc.
- the control panel 108 can include various electronic components for operating the appliance, such as one or more controllers, processors, memory devices, etc.
- the housing 102 can include a gasket 112 surrounding the opening of the oven cavity 104 and sealing the oven door 106 to the opening when the oven door 106 is in the closed position.
- the oven door 106 can be configured to be lockable in a closed position, for example, during a self-cleaning operation.
- One or more removable oven racks or other support devices can be provided within the oven cavity 104 .
- One of ordinary skill will recognize that other configurations are possible.
- a non-welded oven cavity 104 can include a plurality of panels mechanically coupled together without welding and a seal disposed between the mechanically coupled panels of the plurality of panels.
- the seal can be configured to form an airtight seal between the mechanically coupled panels of the plurality of panels during exposure to the extreme temperatures within the interior of the oven cavity associated with a self-cleaning mode, such as a high temperature pyrolytic cleaning cycle, thereby preventing hot air or gases from escaping through mechanical seams or joints of the non-welded oven cavity.
- the seal can include, for example, any thermal seal, pyrolytic seal, fire retardant seal, etc. capable of withstanding extreme temperatures associated with a self-cleaning operation (e.g., 400° C.
- the arrangement of the seal is not limited to any particular shape and can include, for example, a flat seal having a rectangular cross-section, a round seal having a circular or oval cross-section, etc.
- the arrangement of the seal is not limited to any particular type, construction, or material and can include, for example, a solid core, a liquid core, a hallow core, a rope-style seal, a woven blend of materials (e.g., a fiberglass and cotton blend treated with fire retardant chemicals), a rubberized ceramic, etc.
- the seal can be formed from an extrudable material, a woven material such as fabric, a blended material, a laminated material, a pressed material, etc.
- the seal can be formed from food grade (e.g., FDA approved materials) to comply with any applicable government regulations or standardized testing requirements in the industry.
- the seal can be continuous along all or a portion of a length of the seam or joint between the respective panels of the non-welded oven cavity 104 .
- a plurality of seals can be provided at different locations along all or a portion of a length of the seam or joint between the respective panels of the non-welded oven cavity 104 .
- One or more different types, shapes, sizes, materials, configurations, etc. of seals can be provided along the same seam or joint between the respective panels of the non-welded oven cavity 104 or along different seams or joints between other combinations of panels of the non-welded oven cavity 104 .
- a non-welded oven cavity 104 can include a plurality of panels (e.g., 200 , 202 , 204 , 206 , 208 , 210 ) mechanically coupled together without welding.
- the non-welded oven cavity 104 can include a front panel 200 having an opening 201 for accessing the interior space defined by the oven cavity 104 , a side panel 202 , a side panel 204 , a rear panel 206 , a top panel 208 , and a bottom panel 210 .
- the arrangement of the non-welded oven cavity 104 is not limited to the illustrated example, and other configurations of a non-welded oven cavity 104 are possible.
- the non-welded oven cavity 104 can include various configurations and arrangements, including a different number of panels, sub-panels, corner components, etc.
- the non-welded oven cavity 104 can include a variety of assemblies, including a plurality of substantially flat panels, L-shaped panels, U-shaped panels, etc., or various combinations thereof.
- the various panels can be mechanically coupled together at one or more seams or joints with or without fixation elements.
- the panels can be mechanically coupled to each other with one or more fasteners, such as with bolts, rivets, etc., and/or without fasteners, such as by clinching.
- fasteners such as with bolts, rivets, etc.
- the plurality of panels can be mechanically coupled together at seams or joints by other mechanical fixation, assembly, or coupling devices or structures suitable for coupling or joining metal sheets.
- FIG. 3 illustrates an example embodiment having a plurality of panels (e.g., 200 , 202 , 204 , 206 , 208 , 210 ) mechanically coupled together at one or more seams or joints with fixation elements, such as fasteners 308 .
- the edges of the panels e.g., 200 , 202 , 204 , 206 , 208 , 210
- the exemplary features of FIG. 3 as well as other exemplary embodiments of mechanically coupled panels of a non-welded oven cavity 104 , according to the present invention, will be described in greater detail below with reference to the examples illustrated in FIGS. 4A-9 .
- an exemplary embodiment of mechanically coupled panels of a non-welded oven cavity 104 can include two or more panels coupled together to form a seam or joint of the non-welded oven cavity 104 .
- FIGS. 4A and 4B reference the side panel 204 being coupled to the bottom panel 210 .
- the illustrated example is not limited to any particular combination of panels being coupled together.
- the panel 204 can include a first flange 302 and the panel 210 can include a corresponding second flange 304 that is adjacent to the first flange 302 when the panels 204 , 210 are assembled.
- a seal 306 (e.g., a flat seal) is disposed between the flanges 302 , 304 .
- the seal 306 is disposed entirely between the flanges 302 , 304 .
- a portion of the seal 306 can extend or protrude outside of the flanges 302 , 304 .
- the flanges 302 , 304 can be mechanically coupled to each other with the seal 306 therebetween by at least one fixation element 308 , which is illustrated in this example as a fastener such as a rivet or bolt. As shown in the example of FIG.
- the fixation elements 308 can be centrally located and aligned along a longitudinal centerline C 1 of either or both of the flanges 302 , 304 .
- the longitudinal centerline C 1 also can correspond to a centerline of the seal 306 .
- the flanges 302 , 304 are disposed respectively on the panel 204 and the panel 210 on an opposite side of the panels 204 , 210 from an interior space 105 of the non-welded oven cavity 104 .
- the flanges 302 , 304 can be disposed on a side of the panels 204 , 210 facing or extending into the interior space 105 of the non-welded oven cavity 104 .
- the panel 204 can include a flange 302 that is adjacent to a surface 310 of the panel 210 when the panels are assembled.
- a seal 306 e.g., a flat seal
- the flange 302 of the panel 204 and the surface 310 of the panel 210 can be mechanically coupled to each other with the seal 306 therebetween by at least one fixation element 308 . As shown in the example of FIG.
- the fixation elements 308 can be centrally located and aligned along a longitudinal centerline C 1 of the flange 302 and/or a centerline of the seal 306 .
- a portion of the seal 306 can extend or protrude beyond the flange 302 .
- the seal 306 can be disposed entirely between the flange 302 and the surface 310 .
- the flange 302 is disposed on an opposite side of the panel 204 from the interior space 105 of the non-welded oven cavity 104 .
- the flange 302 can be disposed on a side of the panel 204 facing or extending into the interior space 105 of the non-welded oven cavity 104 .
- one or more flanges can include an emboss extending along a longitudinal centerline of the flange.
- a flange 302 can include an emboss extending along a longitudinal centerline of the flange 302 .
- all or a portion of a seal 306 (e.g., a round or oval seal) can be disposed between the emboss 320 of the flange 302 and the surface 310 of the panel 210 .
- the flange 302 of the panel 204 and the surface 310 of the panel 210 can be mechanically coupled to each other with the seal 306 therebetween by a plurality of fixation elements 308 .
- a pair of adjacent flanges 302 , 304 can include matching embosses 320 extending along a longitudinal centerline of each of the flanges 302 , 304 .
- a seal 306 e.g., a round or oval seal
- the flanges 302 , 304 can be mechanically coupled to each other with the seal 306 therebetween by a plurality of fixation elements 308 .
- all or a portion of the seal 306 (e.g., a round or oval seal) can be disposed within the matching embosses 320 .
- a plurality of panels can be coupled together along a plurality of seams or joints to define the non-welded oven cavity 104 .
- Each of the panels e.g., 200 , 202 , 204 , 206 , 208 , 210
- each of the flanges 302 , 304 can include matching embosses 320 extending along a longitudinal centerline of each of the flanges 302 , 304 .
- a plurality of seals 306 e.g., round or oval seals
- the respective flanges 302 , 304 can be mechanically coupled to each other with the seals 306 therebetween by a plurality of fixation elements 308 .
- the fixation elements 308 can be alternately located on opposite sides of the matching embosses 320 extending along the longitudinal centerline of the flanges 302 , 304 or embosses 320 .
- every other fixation element 308 extending in a direction of the longitudinal centerline of the flanges 302 , 304 or embosses 320 can be disposed on an opposite side of the longitudinal centerline of the flanges 302 , 304 or embosses 320 .
- two or more successive fixation elements 308 can be disposed on a same side of the flanges 302 , 304 or embosses 320 , for example, depending on the particular arrangement of the joint or seam.
- the fixation elements 308 can be spaced along the longitudinal centerline of the flanges or embosses.
- the spacing between two successive fixation elements 308 extending in a direction of the longitudinal centerline of the flanges 302 , 304 or embosses 320 can be the same or uniform along the length of the longitudinal centerline of the flanges 302 , 304 or embosses 320 , or in other examples, the spacing between two successive fixation elements 308 at one or more locations can be different from another location, for example, depending on the particular arrangement of the joint or seam.
- FIG. 9 illustrates another example having a plurality of panels (e.g., 204 , 206 , 210 ) coupled together along a plurality of seams or joints to define a lower portion of the non-welded oven cavity 104 .
- a lower end of each of the panels e.g., 204 , 206
- a seal 306 (e.g., a flat seal or the like) can be disposed between the flanges 302 of each respective panel 204 , 206 and the surface of the panel 210 , with each flange 302 being mechanically coupled to the surface of the panel 210 with the respective seal 306 therebetween.
- the fixation elements 308 can be centrally located along a longitudinal centerline of each flange 302 .
- each of the flanges 302 can be disposed on a side of the respective panel 204 , 206 facing or extending into the interior space 105 of the non-welded oven cavity 104 .
- one or more, or all, of the flanges 302 can be disposed on an opposite side of the respective panel 204 , 206 from the interior space 105 of the non-welded oven cavity 104 .
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Abstract
Description
- The present invention is directed to a household cooking appliance including a non-welded oven cavity having a seal disposed between mechanically coupled panels, and more particularly, a non-welded oven cavity having at least one seal disposed between mechanically coupled panels for allowing pyrolytic cleaning of the non-welded oven cavity.
- Some conventional home cooking appliances, such as ovens and ranges, may include a self-cleaning mode, such as a high temperature pyrolytic cleaning cycle. In operation, a so-called pyrolytic oven heats up the interior of the oven cavity to an extremely high temperature (e.g., approximately 400° C. or greater, 450° C. or greater, etc.) to reduce any foodstuff, spills, etc. on the interior surfaces of the oven cavity to a fine ash that can be easily wiped away once the oven cavity has cooled down, with no need for harsh oven-cleaning chemicals or intense scrubbing of the interior surfaces.
- Some conventional home cooking appliances, such as ovens and ranges, may include a welded oven cavity having a plurality of panels welded together to form the oven cavity. Other conventional home cooking appliances may include a non-welded oven cavity, such as a cavity having a plurality of panels mechanically coupled together without welding. The manufacturing costs associated with producing a non-welded oven cavity may be less than a welded oven cavity, for example, since the manufacturing processes and facilities associated with producing a non-welded oven cavity may require less specialized, less complex, and/or less costly manufacturing equipment or manufacturing techniques, less capacity, less space, etc., than may otherwise be associated with the manufacturing of a welded oven cavity.
- The present invention recognizes that, while a welded oven cavity may be suitable for use in an oven having a self-cleaning mode, a non-welded oven cavity typically is not suitable for, or capable of, use in an oven having a self-cleaning mode, such as a high temperature pyrolytic cleaning cycle, since the extreme temperatures within the interior of the oven cavity may cause movement or expansion of mechanical seams or joints of the non-welded oven cavity, thereby allowing hot air or gases to undesirably escape through the mechanical seams or joints of the non-welded oven cavity. Thus, a self-cleaning mode, such as a high temperature pyrolytic cleaning cycle, typically cannot be provided in a conventional home cooking appliance having a non-welded oven cavity.
- The present invention solves these and other problems by providing a household cooking appliance comprising a non-welded oven cavity including a plurality of panels mechanically coupled together without welding and a seal disposed between mechanically coupled panels of the plurality of panels. In this way, the present invention can provide a non-welded oven cavity capable of preventing hot air or gases from escaping through mechanical seams or joints of the non-welded oven cavity during exposure to the extreme temperatures within the interior of the oven cavity associated with a self-cleaning mode, such as a high temperature pyrolytic cleaning cycle. As a result, the present invention can provide a household cooking appliance with desirable self-cleaning features, such as high temperature pyrolytic cleaning, while at the same time reducing manufacturing costs associated with the oven cavity as compared to a welded oven cavity.
- The seal can be configured to provide an airtight seal between the mechanically coupled panels of the plurality of panels, and more particularly, to provide a thermal seal or pyrolytic seal between the mechanically coupled panels of the plurality of panels.
- In an example embodiment, one or more of the mechanically coupled panels of the non-welded oven cavity can include one or more flanges adjacent to each other, with the seal being disposed between the flanges. The flanges can be mechanically coupled to each other with the seal disposed therebetween by at least one fixation element. In some examples, the fixation elements can be centrally located and aligned along a longitudinal centerline of one or more of the flanges and/or the seal disposed between the flanges.
- In other examples, one or more flanges can include an emboss extending along a longitudinal centerline of the flange. In still other examples, a pair of adjacent flanges can include matching embosses extending along a longitudinal centerline of each of the flanges. In these examples, the seal can be disposed in the emboss or matching embosses between the mechanically coupled panels of the plurality of panels. A portion of the seal can be disposed in the emboss or matching embosses, or the seal can be disposed entirely within the emboss or matching embosses.
- The present invention recognizes that providing embosses on one or more of the flanges may result in a reduced amount of the flange being usable for fixation points. Moreover, in some instances, it may be desirable to provide fixation points on each side of the emboss or matching embosses to adequately secure the flanges to each other and to adequately secure the seal within the emboss between the flanges. The present invention further recognizes that aligning the fixation points on opposite sides of the emboss or matching embosses (e.g., aligning the fixation points in a direction perpendicular to the longitudinal centerline of the flanges or embosses), combined with the reduced size of the flange on either side of the emboss, may result in metal fatigue and failure of the mechanical coupling at such a location. To solve these and other problems, in the present invention, the flanges can be mechanically coupled to each other by a plurality of fixation elements, wherein each of the plurality of fixation elements is alternately located on opposite sides of the emboss or matching embosses extending along the longitudinal centerline of the flanges or embosses. In this way, the fixation points on each side of the emboss or matching embosses are capable of adequately securing the flanges to each other and adequately securing the seal between the flanges, while at the same time, reducing the risk of, or avoiding altogether, metal fatigue and failure of the mechanical coupling at fixation locations.
- In other examples, only one panel of the mechanically coupled panels may include a flange, while the other panel may include an adjacent surface. In these examples, the seal can be disposed between the flange of the first panel and the surface of the second panel, with the flange of the first panel being mechanically coupled to the surface of the second panel with the seal therebetween. Similar to the example having a pair of flanges, the flange of the first panel can be mechanically coupled to the surface of the second panel by one or more fixation elements and such fixation elements can be centrally located along a longitudinal centerline of the flange of the first panel. The fixation elements also can be centrally located along the longitudinal centerline of the seal.
- In these examples, either or both of the flange of the first panel and the surface of the second panel can include an emboss or matching embosses extending along the longitudinal centerline of the flange, with the seal being disposed in the emboss or matching embosses. The flange of the first panel can be mechanically coupled to the surface of the second panel by a plurality of fixation elements, wherein each of the plurality of fixation elements is alternately located on opposite sides of the emboss or matching embosses extending along the longitudinal centerline of the flange or embosses, thereby adequately securing the flange to the surface and adequately securing the seal between the flange and the surface, while at the same time, reducing the risk of, or avoiding altogether, metal fatigue and failure of the mechanical coupling at the fixation locations.
- In the exemplary embodiments, the seal can be a flat seal. In other examples, the seal can have an oval cross-section, a circular cross-section, or other cross-sectional shape. The cross-section of the seal can correspond to at least a portion of a cross-section of an emboss formed in one or more flanges and/or surfaces of one of the panels.
- For purposes of this invention, a welded oven cavity can include an oven cavity having a plurality of panels coupled together with welded seams or joints to form the oven cavity. A non-welded oven cavity can include a cavity having a plurality of panels mechanically coupled together at seams or joints with or without fixation elements to form the oven cavity. For example, a non-welded oven cavity can include a cavity having a plurality of panels mechanically coupled to each other at seams or joints with one or more fasteners, such as with bolts, rivets, etc., and/or without fasteners, such as by clinching. One of ordinary skill in the art will recognize that the plurality of panels can be mechanically coupled together at seams or joints by various other mechanical fixation, assembly, or coupling devices or structures suitable for coupling or joining metal sheets.
- By providing a seal, and more particularly an air-tight seal, a thermal seal, or a pyrolytic seal, etc., between the mating flanges or surfaces of a non-welded oven cavity, high temperature gases can be retained within the non-welded oven cavity such that the gases are unable to escape through gaps in the metal panels of the non-welded oven cavity. Accordingly, the present invention can provide both the cost savings of a non-welded oven cavity, as compared to a welded cavity, along with the ability to employ a pyrolytic self-cleaning feature, which would not feasibly be safe with conventional non-welded oven cavity systems.
- Other features and advantages of the present invention will become apparent to those skilled in the art upon review of the following detailed description and drawings.
- These and other aspects and features of embodiments of the present invention will be better understood after a reading of the following detailed description, together with the attached drawings, wherein:
-
FIG. 1 is a schematic, partial cutaway view of a household cooking appliance, according to an exemplary embodiment of the invention; -
FIG. 2 is a schematic front view of a household cooking appliance, according to an exemplary embodiment of the invention; -
FIG. 3 is a schematic perspective view of a non-welded oven cavity of a household cooking appliance, according to an exemplary embodiment of the invention; -
FIG. 4A is a schematic partial, cross-sectional view of panels of a non-welded oven cavity mechanically coupled together, according to an exemplary embodiment of the invention, andFIG. 4B is a schematic plan view ofFIG. 4A ; -
FIG. 5A is another schematic partial, cross-sectional view of panels of a non-welded oven cavity mechanically coupled together, according to an exemplary embodiment of the invention, andFIG. 5B is a schematic plan view ofFIG. 5A ; -
FIG. 6 is another schematic partial, cross-sectional view of panels of a non-welded oven cavity mechanically coupled together, according to an exemplary embodiment of the invention; -
FIG. 7 is another schematic partial, cross-sectional view of panels of a non-welded oven cavity mechanically coupled together, according to an exemplary embodiment of the invention; -
FIG. 8 is another schematic partial, cross-sectional view of panels of a non-welded oven cavity mechanically coupled together, according to an exemplary embodiment of the invention; and -
FIG. 9 is schematic perspective view of panels of a non-welded oven cavity mechanically coupled together, according to an exemplary embodiment of the invention. - The present invention now is described more fully hereinafter with reference to the accompanying drawings, in which embodiments of the invention are shown. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.
- Referring now to the drawings,
FIGS. 1-9 illustrate exemplary embodiments of a household cooking appliance having a non-welded oven cavity with a seal disposed between mechanically coupled panels. Like reference numerals are used to identify similar features of the example embodiments inFIGS. 1-9 . - With reference to
FIGS. 1 and 2 , an example of ahousehold cooking appliance 100 configured to perform a self-cleaning operation, such as a high temperature pyrolytic cleaning cycle, will now be described. Thehousehold cooking appliance 100 can include a standalone appliance, wall mounted appliance, such as a stand-alone oven, wall mounted oven, double oven, combination oven, countertop oven, or a freestanding range having one or more ovens. For example, thehousehold cooking appliance 100 can include a gas or electric wall oven (as shown, for example, inFIGS. 1-3 ), or a gas cooking range having one or more cooking or warming devices, such as a cooktop, gas oven, electric oven, steam oven, convection oven, and/or warming drawer. In other embodiments, the household cooking appliance can include a plurality of oven cooking cavities. The exemplary household cooking appliance can include one or more doors, such as a baking oven door, a steam oven door, and/or a warming drawer door for providing access to one or more cavities within the housing. - An example of a
household cooking appliance 100 can include ahousing 102, anon-welded oven cavity 104 defining an interioroven cavity space 105 accessible through an opening in thenon-welded oven cavity 104, and anoven door 106 covering the opening and moveable about a hinge between an open position and a closed position. Thehousehold cooking appliance 100 can include acontrol panel 108 having auser input device 110 for controlling operation of one or more heating elements and/or circulating fans in theoven cavity 104 for performing various operations, such as a preheat operation, cooking operation, self-cleaning operation, such as a high temperature pyrolytic cleaning cycle, etc. Theuser input device 110 can include one or more control knobs, touch sensitive input devices, etc. for controlling the various operations of the appliance, including, for example, a self-cleaning mode, such as a high temperature pyrolytic cleaning cycle. Thecontrol panel 108 can include various electronic components for operating the appliance, such as one or more controllers, processors, memory devices, etc. Thehousing 102 can include agasket 112 surrounding the opening of theoven cavity 104 and sealing theoven door 106 to the opening when theoven door 106 is in the closed position. Theoven door 106 can be configured to be lockable in a closed position, for example, during a self-cleaning operation. One or more removable oven racks or other support devices can be provided within theoven cavity 104. One of ordinary skill will recognize that other configurations are possible. - With reference to
FIGS. 3-9 , exemplary embodiments of anon-welded oven cavity 104 according to the present invention will now be described. - In exemplary embodiments of the household cooking appliance, a
non-welded oven cavity 104 can include a plurality of panels mechanically coupled together without welding and a seal disposed between the mechanically coupled panels of the plurality of panels. The seal can be configured to form an airtight seal between the mechanically coupled panels of the plurality of panels during exposure to the extreme temperatures within the interior of the oven cavity associated with a self-cleaning mode, such as a high temperature pyrolytic cleaning cycle, thereby preventing hot air or gases from escaping through mechanical seams or joints of the non-welded oven cavity. The seal can include, for example, any thermal seal, pyrolytic seal, fire retardant seal, etc. capable of withstanding extreme temperatures associated with a self-cleaning operation (e.g., 400° C. or greater, 450° C. or greater, etc.). The arrangement of the seal is not limited to any particular shape and can include, for example, a flat seal having a rectangular cross-section, a round seal having a circular or oval cross-section, etc. The arrangement of the seal is not limited to any particular type, construction, or material and can include, for example, a solid core, a liquid core, a hallow core, a rope-style seal, a woven blend of materials (e.g., a fiberglass and cotton blend treated with fire retardant chemicals), a rubberized ceramic, etc. The seal can be formed from an extrudable material, a woven material such as fabric, a blended material, a laminated material, a pressed material, etc. The seal can be formed from food grade (e.g., FDA approved materials) to comply with any applicable government regulations or standardized testing requirements in the industry. The seal can be continuous along all or a portion of a length of the seam or joint between the respective panels of thenon-welded oven cavity 104. In other examples, a plurality of seals can be provided at different locations along all or a portion of a length of the seam or joint between the respective panels of thenon-welded oven cavity 104. One or more different types, shapes, sizes, materials, configurations, etc. of seals can be provided along the same seam or joint between the respective panels of thenon-welded oven cavity 104 or along different seams or joints between other combinations of panels of thenon-welded oven cavity 104. - With reference to the example illustrated in
FIG. 3 , anon-welded oven cavity 104 can include a plurality of panels (e.g., 200, 202, 204, 206, 208, 210) mechanically coupled together without welding. In the illustrated example, thenon-welded oven cavity 104 can include afront panel 200 having anopening 201 for accessing the interior space defined by theoven cavity 104, aside panel 202, aside panel 204, arear panel 206, atop panel 208, and abottom panel 210. The arrangement of thenon-welded oven cavity 104 is not limited to the illustrated example, and other configurations of anon-welded oven cavity 104 are possible. For example, thenon-welded oven cavity 104 can include various configurations and arrangements, including a different number of panels, sub-panels, corner components, etc. Thenon-welded oven cavity 104 can include a variety of assemblies, including a plurality of substantially flat panels, L-shaped panels, U-shaped panels, etc., or various combinations thereof. The various panels can be mechanically coupled together at one or more seams or joints with or without fixation elements. For example, the panels can be mechanically coupled to each other with one or more fasteners, such as with bolts, rivets, etc., and/or without fasteners, such as by clinching. One of ordinary skill in the art will recognize that the plurality of panels can be mechanically coupled together at seams or joints by other mechanical fixation, assembly, or coupling devices or structures suitable for coupling or joining metal sheets. -
FIG. 3 illustrates an example embodiment having a plurality of panels (e.g., 200, 202, 204, 206, 208, 210) mechanically coupled together at one or more seams or joints with fixation elements, such asfasteners 308. In this example, the edges of the panels (e.g., 200, 202, 204, 206, 208, 210) can includecorresponding flanges more seals 306 disposed within the matching embosses 320 and between the correspondingflanges FIG. 3 , as well as other exemplary embodiments of mechanically coupled panels of anon-welded oven cavity 104, according to the present invention, will be described in greater detail below with reference to the examples illustrated inFIGS. 4A-9 . - With reference to
FIGS. 4A and 4B , an exemplary embodiment of mechanically coupled panels of anon-welded oven cavity 104 can include two or more panels coupled together to form a seam or joint of thenon-welded oven cavity 104. For illustrative purposes,FIGS. 4A and 4B reference theside panel 204 being coupled to thebottom panel 210. However, the illustrated example is not limited to any particular combination of panels being coupled together. In this example, thepanel 204 can include afirst flange 302 and thepanel 210 can include a correspondingsecond flange 304 that is adjacent to thefirst flange 302 when thepanels flanges seal 306 is disposed entirely between theflanges seal 306 can extend or protrude outside of theflanges flanges seal 306 therebetween by at least onefixation element 308, which is illustrated in this example as a fastener such as a rivet or bolt. As shown in the example ofFIG. 4B , thefixation elements 308 can be centrally located and aligned along a longitudinal centerline C1 of either or both of theflanges seal 306. - In the example illustrated in
FIGS. 4A and 4B , theflanges panel 204 and thepanel 210 on an opposite side of thepanels interior space 105 of thenon-welded oven cavity 104. However, in other examples, theflanges panels interior space 105 of thenon-welded oven cavity 104. - With reference to
FIGS. 5A and 5B , in another example, thepanel 204 can include aflange 302 that is adjacent to asurface 310 of thepanel 210 when the panels are assembled. In this example, a seal 306 (e.g., a flat seal) is disposed between theflange 302 and thesurface 310 of thepanel 210. Theflange 302 of thepanel 204 and thesurface 310 of thepanel 210 can be mechanically coupled to each other with theseal 306 therebetween by at least onefixation element 308. As shown in the example ofFIG. 5B , thefixation elements 308 can be centrally located and aligned along a longitudinal centerline C1 of theflange 302 and/or a centerline of theseal 306. In this example, a portion of theseal 306 can extend or protrude beyond theflange 302. However, in other examples, theseal 306 can be disposed entirely between theflange 302 and thesurface 310. In the example illustrated inFIGS. 5A and 5B , theflange 302 is disposed on an opposite side of thepanel 204 from theinterior space 105 of thenon-welded oven cavity 104. However, in other examples, theflange 302 can be disposed on a side of thepanel 204 facing or extending into theinterior space 105 of thenon-welded oven cavity 104. - In other examples, one or more flanges can include an emboss extending along a longitudinal centerline of the flange. For example, as shown in
FIG. 6 , aflange 302 can include an emboss extending along a longitudinal centerline of theflange 302. In this example, all or a portion of a seal 306 (e.g., a round or oval seal) can be disposed between theemboss 320 of theflange 302 and thesurface 310 of thepanel 210. Theflange 302 of thepanel 204 and thesurface 310 of thepanel 210 can be mechanically coupled to each other with theseal 306 therebetween by a plurality offixation elements 308. - In another example, as shown in
FIG. 7 , a pair ofadjacent flanges flanges flanges seal 306 therebetween by a plurality offixation elements 308. In these examples, all or a portion of the seal 306 (e.g., a round or oval seal) can be disposed within the matching embosses 320. - With reference again to
FIG. 3 and also toFIG. 8 , a plurality of panels (e.g., 200, 202, 204, 206, 208, 210) can be coupled together along a plurality of seams or joints to define thenon-welded oven cavity 104. Each of the panels (e.g., 200, 202, 204, 206, 208, 210) can include a flange or plurality offlanges 302 configured to be adjacent to arespective flange 304 of another adjacent panel when the panels are in an assembled state. In the examples shown inFIGS. 3 and 8 , each of theflanges flanges respective flanges respective flanges seals 306 therebetween by a plurality offixation elements 308. - As shown in each of
FIGS. 3 and 6-8 , thefixation elements 308 can be alternately located on opposite sides of the matching embosses 320 extending along the longitudinal centerline of theflanges other fixation element 308 extending in a direction of the longitudinal centerline of theflanges flanges successive fixation elements 308 can be disposed on a same side of theflanges fixation elements 308 can be spaced along the longitudinal centerline of the flanges or embosses. The spacing between twosuccessive fixation elements 308 extending in a direction of the longitudinal centerline of theflanges flanges successive fixation elements 308 at one or more locations can be different from another location, for example, depending on the particular arrangement of the joint or seam. -
FIG. 9 illustrates another example having a plurality of panels (e.g., 204, 206, 210) coupled together along a plurality of seams or joints to define a lower portion of thenon-welded oven cavity 104. As shown inFIG. 9 , a lower end of each of the panels (e.g., 204, 206) can include one ormore flanges 302 configured to be adjacent to a surface of thebottom panel 210 when the panels are in an assembled state, similar to the example illustrated inFIGS. 5A and 5B . In this example, a seal 306 (e.g., a flat seal or the like) can be disposed between theflanges 302 of eachrespective panel panel 210, with eachflange 302 being mechanically coupled to the surface of thepanel 210 with therespective seal 306 therebetween. Thefixation elements 308 can be centrally located along a longitudinal centerline of eachflange 302. In this example, each of theflanges 302 can be disposed on a side of therespective panel interior space 105 of thenon-welded oven cavity 104. However, in other examples, one or more, or all, of theflanges 302 can be disposed on an opposite side of therespective panel interior space 105 of thenon-welded oven cavity 104. - The present invention has been described herein in terms of several preferred embodiments. However, modifications and additions to these embodiments will become apparent to those of ordinary skill in the art upon a reading of the foregoing description. It is intended that all such modifications and additions comprise a part of the present invention to the extent that they fall within the scope of the several claims appended hereto.
Claims (20)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US17/142,289 US20220214047A1 (en) | 2021-01-06 | 2021-01-06 | Household cooking appliance including a non-welded oven cavity having a seal allowing pyrolytic cleaning |
PCT/EP2021/084782 WO2022148592A1 (en) | 2021-01-06 | 2021-12-08 | Household cooking appliance including a non-welded oven cavity having a seal allowing pyrolytic cleaning |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US17/142,289 US20220214047A1 (en) | 2021-01-06 | 2021-01-06 | Household cooking appliance including a non-welded oven cavity having a seal allowing pyrolytic cleaning |
Publications (1)
Publication Number | Publication Date |
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US20220214047A1 true US20220214047A1 (en) | 2022-07-07 |
Family
ID=79269857
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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US17/142,289 Abandoned US20220214047A1 (en) | 2021-01-06 | 2021-01-06 | Household cooking appliance including a non-welded oven cavity having a seal allowing pyrolytic cleaning |
Country Status (2)
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US (1) | US20220214047A1 (en) |
WO (1) | WO2022148592A1 (en) |
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US1836639A (en) * | 1930-04-11 | 1931-12-15 | Armstrong Appliance Corp | Oven for ranges |
US2039539A (en) * | 1934-03-28 | 1936-05-05 | Malleable Steel Range Mfg Co | Stove construction |
GB520256A (en) * | 1938-10-28 | 1940-04-18 | Edward Monkhouse | Improved construction of electric cookers |
ITPD20040270A1 (en) * | 2004-11-03 | 2005-02-03 | Unox Spa | PERFECT STRUCTURE OF MUFFLE |
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2021
- 2021-01-06 US US17/142,289 patent/US20220214047A1/en not_active Abandoned
- 2021-12-08 WO PCT/EP2021/084782 patent/WO2022148592A1/en active Application Filing
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US4245614A (en) * | 1978-09-12 | 1981-01-20 | Mathew Hurwitz | Fireplace screen |
US4320275A (en) * | 1979-11-20 | 1982-03-16 | Licentia Patent-Verwaltungs-G.M.B.H. | Microwave oven with resistance heating unit |
EP0184051B1 (en) * | 1984-11-29 | 1988-10-26 | ATEC-Weiss KG | Flexible steel shaft coupling |
GB2197457A (en) * | 1986-11-10 | 1988-05-18 | Ti New World Ltd | Cooking appliances |
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US20090110784A1 (en) * | 2006-04-04 | 2009-04-30 | Toyo Seikan Kaisha Ltd | Packaging container for microwave oven and process for manufacturing the same |
WO2014180076A1 (en) * | 2013-05-08 | 2014-11-13 | 广东美的厨房电器制造有限公司 | Cavity assembly for baking oven |
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US20180017267A1 (en) * | 2016-07-12 | 2018-01-18 | Electrolux Home Products, Inc. | Anti-spill receptacle for door latch |
Also Published As
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WO2022148592A1 (en) | 2022-07-14 |
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