Heat-cleaning range construction

Claim 2

A domestic range having a heat-cleaning oven with an oven cavity formed by a box-like oven liner and an oven door, a boxlike insulation retainer inner cabinet surrounding said oven liner and spaced therefrom, insulation in the space between said oven liner and said inner cabinet surrounding said oven liner, a unitary stainless steel throat member extending around the access opening of said oven cavity having a double-L cross section, the inner L portion of said throat member having a vertically extending inner throat flange providing an oven door jamb, the outer L portion of said throat member having a vertically extending outer throat flange, an outer cabinet covering said inner cabinet and spaced therefrom including a cooktop supporting a plurality of surface heating units above aligned openings therein, the space between said cooktop and the horizontally extending top wall of said inner cabinet providing a plenum chamber, said oven door comprising a front panel, a rear door plug panel and intermediate insulation retainer panel, said door plug panel having a forwardly off-set peripheral flange, a door frame member securing the edges of said door plug panel and said front panel in spaced relation defining a vertical air passageway therebetween, first sealing means bordering said door plug panel operative to sealingly engage said inner throat flange upon closure of said oven door, said off-set peripheral flange including apertures therein bordering all four sides of said oven door vertical passage and communicating therewith, said off-set peripheral flange aligned in opposed spaced relation with said outer throat flange defining an upper convection air flow channel together with lower and side room air inlet flow spaces therebetween, a front cover panel positioned between the forward edge of said cooktop and the upper edge of said oven door frame member, second sealing means for sealing the gap between the lower edge of said front cover panel and the upper edge of said door frame member upon the closure of said oven door to prevent the exit of the heated air in said air flow channel through said gap, aperture means at the forward end of said plenum chamber providing air flow communication between said upper air flow channel and said plenum chamber, whereby room air entering said door vertical passage through said off-set flangE apertures moves upwardly therein by reason of a heated air chimney effect during an oven heat-cleaning operation so as to flow into said plenum chamber, heated air exhaust openings in said range communicating with said plenum chamber such that said door front panel and said outer cabinet are maintained at reduced temperatures during the heat-cleaning operation.

Claim 3

A domestic range having a heat-cleaning oven with an oven cavity formed by a box-like oven liner and an oven door, a box-like insulation retainer inner cabinet surrounding said oven liner and spaced therefrom, insulation in the space between said oven liner and said inner cabinet surrounding said oven liner, a unitary stainless steel throat member extending around the access opening of said oven cavity having a double-L cross section, the inner L portion of said throat member having a vertically extending inner throat flange providing an oven door jamb, the outer L portion of said throat member having a vertically extending outer throat flange, an outer cabinet covering said inner cabinet and spaced therefrom including a cooktop supporting a plurality of surface heating units above vented openings therein, the space between said cooktop and the horizontally extending top wall of said inner cabinet providing a plenum chamber, said oven door comprising a front panel, a rear door plug panel and intermediate insulation retainer panel, said door plug panel havint a forwardly off-set peripheral flange substantially co-planar with said door intermediate panel, a door frame member securing the edges of said door plug panel and said front panel in spaced relation defining a vertical air passageway therebetween, gasket means bordering said door plug panel operative to sealingly engage said inner throat flange upon closure of said oven door, said off-set peripheral flange including a pattern of staggered elongated slots formed therein bordering all four sides of said oven door vertical passage and communicating therewith, said off-set peripheral flange aligned in opposed spaced relation with said outer throat flange defining an upper heated air flow channel together with lower and side air flow spaces therebetween, a front cover panel positioned between the forward edge of said cooktop and the upper edge of said oven door frame member, a flexible sealing strip on the lower edge of said front cover panel operative to sealingly engage the upper edge of said door frame member upon the closure of said oven door, a stringer member coextensive with said front cover panel the lower portion of which being secured to the upper edge of said outer throat flange, aperture means in said stringer member providing air flow communication between said upper air flow channel and said plenum chamber, whereby ambient air entering said door vertical passage through said lower and side air flow spaces and their associated off-set flange slots moves upwardly therein by reason of a heated air chimney effect into said upper air flow channel via the upper off-set flange slots and thence into said plenum chamber for exit through cooktop openings beneath said surface heating units such that said door front panel and said outer cabinet are maintained at reduced temperatures during the heat-cleaning operation.

Claim 4

A domestic range having a heat-cleaning oven with an oven cavity formed by a box-like oven liner and an oven door, a box-like insulation retainer inner cabinet surrounding said oven liner and spaced therefrom, insulation in the space between said oven liner and said inner cabinet surrounding said oven liner, a unitary stainless steel throat member extending around the access opening of said oven cavity having a double-L cross section, the inner L portion of said throat member having a vertically extending inner throat flange providing an oven door jamb, the outer L portion of said throat member having a vertically extending outer throat flange, an outer cabinet covering said inner cabinet and spaced therefrom including a cooktop supporting a plurality of surface heating units above vented openings therein, the space between said cooktop and the horizontally extending top wall of said inner cabinet providing a plenum chamber, said oven door comprising a front panel, a rear door plug panel and intermediate insulation retainer panel, said door plug panel havint a forwardly off-set peripheral flange substantially co-planar with said door intermediate panel, a door frame member securing the edges of said door plug panel and said front panel in spaced relation defining a vertical air passageway therebetween, gasket means bordering said door plug panel operative to sealingly engage said inner throat flange upon closure of said oven door, said off-set peripheral flange including a pattern of staggered elongated slots formed therein bordering all four sides of said oven door vertical passage and communicating therewith, said off-set peripheral flange aligned in opposed spaced relation with said outer throat flange defining an upper heated air flow channel together with lower and side air flow spaces therebetween, a front cover panel positioned between the forward edge of said cooktop and the upper edge of said oven door frame member, a flexible sealing strip on the lower edge of said front cover panel operative to sealingly engage the upper edge of said door frame member upon the closure of said oven door, a stringer member coextensive with said front cover panel the lower portion of which being secured to the upper edge of said outer throat flange, aperture means in said stringer member providing air flow communication between said upper air flow channel and said plenum chamber, whereby ambient air entering said door vertical passage through said lower and side air flow spaces and their associated off-set flange slots moves upwardly therein by reason of a heated air chimney effect into said upper air flow channel via the upper off-set flange slots and thence into said plenum chamber for exit through cooktop openings beneath said surface heating units such that said door front panel and said outer cabinet are maintained at reduced temperatures during the heat-cleaning operation.

Claim 5

A light-weight range construction comprising a free standing outer cabinet including rear and side panels and a front cover panel, a K-shaped base including a transverse floor angle support element adapted to lie on the floor adjacent the rear edge of said range outer cabinet, said transverse floor angle having its base flange extending forwardly from its upstanding flange, said upstanding flange having its end portions lanced and rearwardly bent forming rear securing tabs, said K-shaped base including a pair of diagonal floor angle support elements adapted to lie on the foor in a symmetrical fashion about the longitudinal centerline of said range, each said diagonal angle having one end secured to said transverse floor angle adJacent its midpoint, each said diagonal angle having its base flanges extending rearwardly from its upstanding flange, the free ends of each said diagonal angle upstanding flange being lanced and forwardly bent forming a front securing tab, each pair of respective front and rear tabs aligned in a common longitudinal plane for securing engagement with return bend flanges along the bottom edges of their associated side panel, the front edge of each of said side panels including vertically disposed return bend trim flanges thereon, upper and lower vertically spaced stringer members extending between said side panels having their ends secured to respective ones of said side panel trim flanges, means for supporting a heat-cleaning oven assembly between said upper and lower stringer members, said oven assembly including an oven liner enclosed in spaced relation by an inner insulation retainer cabinet, said oven support means including a double-L shaped unitary stainless steel throat member extending around the front access opening of said oven liner, said throat member having an inner L section portion and an outer L section portion, said outer L section portion having an outer throat flange extending vertically so as to overlap in a secured manner associated portions of said upper and lower stringers and said side panel front edge return bend trim flange, and said inner L-section secured to said oven liner access opening so as to support said liner in a cantilevered manner within said inner casing to minimize the conductive heat flow between said oven assembly and said range outer casing.

Claim 6

A light-weight range construction comprising a free standing outer cabinet including rear and side panels and a front cover panel, a K-shaped base including a transverse floor angle support element adapted to lie on the floor adjacent the rear edge of said range outer cabinet, said transverse floor angle having its base flange extending forwardly from its upstanding flange, said upstanding flange having its end portions lanced and rearwardly bent forming rear securing tabs, said K-shaped base including a pair of diagonal floor angle support elements adapted to lie on the foor in a symmetrical fashion about the longitudinal centerline of said range, each said diagonal angle having one end secured to said transverse floor angle adJacent its midpoint, each said diagonal angle having its base flanges extending rearwardly from its upstanding flange, the free ends of each said diagonal angle upstanding flange being lanced and forwardly bent forming a front securing tab, each pair of respective front and rear tabs aligned in a common longitudinal plane for securing engagement with return bend flanges along the bottom edges of their associated side panel, the front edge of each of said side panels including vertically disposed return bend trim flanges thereon, upper and lower vertically spaced stringer members extending between said side panels having their ends secured to respective ones of said side panel trim flanges, means for supporting a heat-cleaning oven assembly between said upper and lower stringer members, said oven assembly including an oven liner enclosed in spaced relation by an inner insulation retainer cabinet, said oven support means including a double-L shaped unitary stainless steel throat member extending around the front access opening of said oven liner, said throat member having an inner L section portion and an outer L section portion, said outer L section portion having an outer throat flange extending vertically so as to overlap in a secured manner associated portions of said upper and lower stringers and said side panel front edge return bend trim flange, and said inner L-section secured to said oven liner access opening so as to support said liner in a cantilevered manner within said inner casing to minimize the conductive heat flow between said oven assembly and said range outer casing.