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
• • 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 a door for use in a household appliance, in particular an oven.
• the present invention more particularly relates to a door with an intermediate glass pane.
• the exposed parts of a household appliance must be generally kept well below dangerous temperature limits to protect the user from skin burns and scalding.
• exposed parts such as the oven door is directly subjected to radiant heat emanated from the cooking chamber.
• the handle and the outer glass pane of the oven door can easily get hot. Therefore, increased measures must be taken to cool down the oven door to safe temperatures.
• an intermediate glass pane is arranged between the outer glass pane and an inner glass pane of the oven door to function as an additional thermal barrier.
• the hot air inside the oven door can be discharged into the environment, for example, by natural convection via a ventilation hole formed in the oven door.
• DE 101 43 925 A1 discloses a cooking appliance door.
• This cooking appliance door includes an outer glass pane, an inner glass pane, and the intermediate glass pane.
• the intermediate glass pane is arranged between the outer glass pane and inner glass pane.
• the cooking appliance door further includes a frame which holds the outer glass pane and an inner glass pane.
• the intermediate glass pane is inserted into a gap defined by a flange and an L-shaped profile which are circumferentially formed on the frame.
• a drawback of the above conventional cooking appliance door is that a manufacturing of the frame involves assembly of several parts which incurs additional costs. Also the intermediate glass pane is susceptible to vibrations and breakage.
• An objective of the present invention is to provide a door for use in an oven which overcomes the aforementioned drawbacks of the prior art and which is easy to manufacture and assemble.
• the door according to the present invention comprises two mounting elements each having a guide for slidably receiving and supporting upper corners of the intermediate glass pane respectively.
• the two mounting elements are separately provided from the frame.
• the two mounting elements are respectively embedded into a pair of openings which are formed into opposing lateral sides of the frame.
• each guide has protrusions which abut the lower surface and the upper surface of the intermediate glass pane.
• the protrusions provide a relatively high friction to prevent the intermediate glass pane from sliding.
• the protrusions firmly press onto the intermediate glass pane so as to diminish vibrations and prevent the intermediate glass pane from clattering or the like under load.
• the protrusions of each guide are formed in a staggered arrangement to improve a grip.
• each guide is reinforced with supporting ribs.
• the supporting ribs prevent the mounting element from breakage when the intermediate glass pane exerts high forces onto the guide.
• each mounting element has a ventilation hole which fluidly connects a space between the outer glass pane and the inner glass pane to the outside.
• the ventilation hole fluidly connects the space on both sides of the intermediate glass pane with the outside.
• one of the mounting elements has an inclined portion which matches a chamfered corner of the intermediate glass plane. Thereby, an incorrect mounting of the intermediate glass pane is prevented.
• a door has been provided which is easy to manufacture and assemble.
• the intermediate glass pane can be safely installed into the door of the present invention.
• Figure 1 – is a schematic perspective view of a door according to an embodiment of the present invention.
• Figure 2 is another schematic perspective view of the door according to an embodiment of the present invention.
• Figure 3 – is a schematic perspective exploded partial view of the door according to an embodiment of the present invention.
• Figure 4 – is a schematic perspective partial view of the door according to an embodiment of the present invention.
• Figure 5 – is a schematic perspective enlarged partial view of the detail A in Fig. 4;
• Figure 6 – is a schematic perspective view of a mounting element according to an embodiment of the present invention.
• Figure 7 — is another schematic perspective view of the mounting element according to an embodiment of the present invention.
• Figure 8 – is a schematic partial rear view of the door according to an embodiment of the present invention.
• Figure 9 – is a schematic cross sectional partial bottom view of the door shown in Fig. 8, taken along the line B-B;
• Figure 10 – is a schematic enlarged partial bottom view of the detail D in Fig. 9;
• Figure 11 – is a schematic cross sectional partial side view of the door shown in Fig. 8, taken along the line C-C;
• Figure 12 – is a schematic enlarged partial side view of the detail E in Fig. 11.
• the door (1) is suitable for use in a household appliance (not shown), in particular an oven (Figs. 1 and 2).
• the door (1) comprises an outer glass pane (2), an inner glass pane (3); a frame (4) for holding the outer glass pane (2) and the inner glass pane (3) and an intermediate glass pane (5) which is arranged between the outer glass pane (2) and the inner glass pane (3) (Figs. 1 to 4).
• the door (1) comprises two mounting elements (6) each having a guide (7) for slidably receiving and supporting upper corners (8) of the intermediate glass pane (5) respectively (Figs. 3 and 4).
• the two mounting elements (6) are separately provided from the frame (4) (Fig. 6).
• the two mounting elements (6) are respectively embedded into a pair of openings (9) which are formed into opposing lateral sides (10) of the frame (4) (Figs. 3 and 4).
• the mounting element (6) is made of a heat resistant and resilient plastic material.
• the mounting element (6) can be manufactured by a molding process.
• the two mounting elements (6) are respectively embedded from an inner side (11) of the frame (4) into the pair of openings (9) by compression fit (Figs. 3 and 4).
• the mounting element (6) has been provided with claws (26) which catch the frame (4) (Fig. 6).
• each mounting element (6) has a flange (12) which abuts against an inner side (11) of the frame (4) (Fig. 5).
• the mounting element (6) has an oblong shape (6).
• each guide (7) includes a pair of protrusions (13) which are configured to abut respectively on a lower surface (5a) and an upper surface (5b) of the intermediate glass pane (5) (Figs. 11 and 12).
• the protrusions (13) provide a relatively high friction to prevent the intermediate glass pane (5) from sliding.
• the protrusions (13) firmly press onto the intermediate glass pane (5) so as to diminish vibrations and prevent the intermediate glass pane (5) from clattering or the like.
• the protrusions (13) of each guide (7) are formed in a staggered arrangement.
• each guide (7) is reinforced with a plurality of supporting ribs (14) (Fig. 6).
• the supporting ribs (14) prevent the mounting element (6) from breakage when the intermediate glass pane (5) exerts high forces onto the guide (7) (Figs. 9 and 10).
• each mounting element (6) has one or more than one ventilation hole (15) which fluidly connects a space (16) between the outer glass pane (2) and the inner glass pane (3) to the outside.
• the ventilation hole (15) fluidly connects the space on both sides of the intermediate glass pane (5) with the outside (Figs. 11 and 12).
• At least one of the mounting elements (6) has an inclined portion (17) which is configured to match a chamfered corner (18) of the intermediate glass pane (5) (Figs. 3 and 6). Thereby, an incorrect mounting of the intermediate glass pane (5) is prevented (Figs. 3 and 4). This is particularly important when the intermediate glass pane (5) has a non-uniform structure.
• the frame (4) is configured by a u-shaped profile (19).
• the frame has two lateral sides (10) and an upper side which connects the lateral sides (11) (Fig. 3).
• the u-shaped profile has a substantially rectangular cross section (Figs. 9 and 11).
• the door (1) further comprises a pair of hinge elements (20) (Figs. 1 and 2).
• Each of the hinge elements (20) are respectively secured to the frame (4) by way of insertion into open end portions (21) of the u-shaped profile (19) (Figs. 3 and 4).
• each hinge element (20) has a receiving gap (22) for supporting a lower side (3a) of the inner glass pane (3) (Figs. 1 to 3; Fig. 11).
• the door (1) further comprises a reinforcement plate (23) which is connected to the pair of hinge elements (20) (Figs. 3 and 4).
• the reinforcement plate (23) configures a bottom of the door (1) (Figs. 1 and 2).
• the reinforcement plate (23) has one or more than through hole (24) for draining condensate water (Fig. 2). Thereby, the condensate is prevented from dropping onto the floor.
• a bottom side (5c) of the intermediate glass pane (5) is supported by the reinforcement plate (23). Thereby, the intermediate glass pane (5) is secured to the frame (4) from below.
• the outer glass pane (2) is secured to the frame (4) by an adhesive.
• the frame (4) is provided.
• the mounting elements (6) are inserted into the openings (9) on the frame (4) from an inside such that the flanges (12) firmly abut against the inner sides (11) of the frame (4).
• the upper corners (8) of the intermediate glass pane (5) are slidably engaged with the mounting elements (6).
• the hinge elements (20) are inserted into the open-end portions (21) of the frame (4).
• the hinge elements (20) are fixed to the frame (4).
• the reinforcement plate (23) is aligned across the legs of the u-shaped profile (19) while supporting the bottom side (5c) of the intermediate glass pane (5).
• the reinforcement plate (23) is fixed to the hinge elements (20) for example by using screws (not shown).
• the outer glass pane (2) is fixed onto the frame (4) by using an adhesive.
• the inner glass pane (3) is placed on the frame (4) while inserting the lower side (3c) of the intermediate glass pane (5) into the receiving gaps (22).
• the inner glass pane (3) is subsequently fixed to the frame (4) by an adhesive or other mechanical means.
• the door (1) is provided with a handle (25) (Figs. 1 to 12). Thereafter, the door (1) is ready for use in a household appliance.
• the present invention also proves a household appliance (not shown) which comprises the door (1) of the present invention.
• the household appliance is an oven (not shown) which comprises a cooking chamber and the door (1) of the present invention.
• the door (1) is pivotably arranged to open/close the cooking chamber.
• the door (1) is connected to a main body of the oven through the hinge elements (20).
• a door (1) has been provided which is easy to manufacture and assemble.
• the intermediate glass pane (5) can be safely installed into the door (1).

Landscapes

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

Applications Claiming Priority (1)

Publications (1)

Family

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Family Applications (1)

Country Status (2)

Families Citing this family (3)

Family Cites Families (3)

• 2013
  • 2013-12-24 WO PCT/EP2013/077994 patent/WO2015096865A1/en not_active Ceased
  • 2013-12-24 EP EP13811993.8A patent/EP3087325A1/de not_active Withdrawn

Non-Patent Citations (1)

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