DE1454245A1 - Window unit for oven doors - Google Patents

Description

Br. Phll. «.Β. UAGEW Patent attorney. I 4 O 4 2 4 5 BOOO MUNICH-SOLLN Franc Have Penalties 21

Telephone 796213 Portf.ch 48

MiP 1183 / Kö

Dr. Expl.

Mills Products, Inc.
1015 V / est Maple Road
Walled. Lake, Michigan,

Priority: IJSAj Sept. 24, 1963 U.S. Ser. Ho. 311 081

Penster unit for oven doors

The present invention relates in particular to oven door windows a double pane window unit so formed is that there are none on the inner surfaces of the panes of glass Moisture can condense. The pen unit according to the invention is particularly intended for ovens for domestic and commercial use, but can also be used with use all other types of oven closures.

909885/0015

145 * 245

In domestic and commercial baking and roasting ovens, the oven atmosphere is heavily loaded with moisture and it is desirable to prevent this moisture from condensing on the interior surfaces of the glass panes. This problem of moisture condensation on the inner surfaces of the glass panes is particularly acute in ovens with closed or sealed * combustion chambers. In such closed ovens, the moisture that could escape to the outside at the periphery of the oven door in previous designs is driven into the space between the closure panels to collect on the inner surfaces of the window panes, with the result that the window steams up and in a short time thereby becomes more or less unusable.

A window unit for oven doors is characterized according to the invention by two spaced-apart card glass panes and one between the panes on their bands metallic spacers, the outer edges of the discs are connected by a sealing strip so that the Discs with the spacer in between form a firmly joined unit and with the wrapped Discs are encompassed on their periphery by a rigid support frame in which the unit is clamped.

In the attached drawings show:

909885 / 001S

Ji · <1 a message; an inventive window unit;

? ir. Fig. 2 is a fragmentary sectional view taken along line 2-2 ' in Fig. 1;

Pi·'. 3 an enlarged ücünittarjöicht along eier Idnie 3-3 in j? 'Ir :. 1Y -

- ^{1 1} ^ ₁ 4 a cross-sectional view corresponding to FIG. 3 of an abf-; ewpiiCalten Ausjahrungsi'orm of the penster unit according to the invention; ·

-b'i ^ t. .b an i'rnitnejitarian elevation view of a further embodiment: ^rr sgeiniLi.-en Pensterei2: -i; eit; and

ipii '. G a wrong view. tier line 6-6 in

Uli χ ¹ !. · -. 1, 2 and 3 iot the shutter 12 of a 3 aclcofens 10 r.iit a double truck; Ouer double-layered pen unit shown. have jJie inner wall or plate 16 and the λ u.2 en wan dun ρ or plate 1b of the shutter, "in each case one ew by inwardly bent Plansche 20, 22 formed opening. I'enstereinheit Me is arranged in these openings, the Plansche 20 and 22 together with provided on the Penstereinheit ^ -vülsten 24 and 26, the Penster in the correct la. e ^rt holders in the Süröffnung.

The penster unit consists of two volcanic glass or lisrt glass necks 2fc and 3 ^, one sv? Ischen the disks on their

9 09 88B / 0015 W.

arranged metallic spacers 32, a! sealing strip, preferably in - "-" form one coated with adhesive Aluminum foil 34 wrapped around the outer edges of the. · Washers 28 and 30 is wound and overlaps the outsides, as well as one rigid support frame 36 that holds the wrapped discs the scope of which included

The adhesive-coated strip 34 is according to the invention wrapped around the outer edges of glass sheets 28 and 30 and on these glued in place, so that the same with the spacer 32 arranged between them form a firmly joined unit form. A pressure-sensitive adhesive is preferably used as the adhesive 35 Silicone adhesive that can withstand temperatures of 288 ° 0 (55O ° P) to withstand without sacrificing its adhesive properties able to - ^ he wrapped around the outer edges of the pane of glass and Strips stuck to it because it is impermeable to moisture is, a good moisture-proof seal "for the Space between the panes 28 and 30, the strip also serves to hold the panes of glass 28 and 30 into one unit to connect and during the attachment of the clamping frame 36 to be held in the correct mutual position.

The clamping frame 36 preferably consists of a continuous sheet metal strip with an XJ-shaped profile, which is wrapped around the penster unit and at its two ends by a v

Tongue and slot connection is held together. after this Pulling the clamping frame 36 onto the wrapped with the strip Glass panes, the strip is located between the handles of the glass panes and the bottom of the U-profile of the Tenter frame, like nan in ΪΙ3. 3 sees *, with the band 34 The sides 40 and 42 of the tenter frame hold the glass panes 28 and 30 secure the parallel sides of the spacer Press 32.

The sides 40 and 42 of the clamping frame 36 are preferably provided with beads 24 and 26 which, together with the projections 20 and 22 standing on the door panels, ensure that the penster unit is in the correct position in relation to the opening in the lock 12 is arranged. A coating of adhesive 35 on one side of the strip is generally sufficient so that the strip can easily be pulled onto the circumference of the glass panes 28 and 30 and glued before the panes are installed in the frame 36. In this way, the strip 34 forms a perfect moisture-proof seal for the space between the panes 28 and 30. Instead of the sealed space between the panes 28 and 30 being evacuated, one or more vent holes 44 are in the outer one in the present panel Glass pane 30 is provided. These ventilation or breathing holes, which may have a legal diameter of about 3.2 to 1.6 mm (1/8 to 1/16 inch); -

90 9 8 8 5 / OOtB

ensure that the outside air enters the space between the Discs 28 and 3C can circulate, '.ienn the furnace temperature increases, the temperature of the lu ^ t zv / ischeri also increases the panes, so that this air expands una through the Holes 44 flows out, whereby it is prevented that an overpressure arises between the discs. Since I see the temperature the disks 28 "and 30 is higher than the temperature of the surrounding space, and since the sealing strip 34 the Sindringen Prevents moisture from entering the space between the panes 28 and 30 from the interior of the open air of the oven no low moisture scalag on the inner surfaces of the panes 28 and 30, after the oven has been switched off and cooled down, the air is drawn between the panes 28 and 30 30 together, with the result that -üift from the outside through the Openings 44 flows into this space. As the moisture content from the outside into the space between the disks 28 and 30 inflowing air corresponds to that of the surrounding room air, and since the temperature of the glass panes 28 and 30 is not below the surrounding room temperature drops, forms on the inner surfaces of discs 28 and 30 no precipitation »

Instead of the circumference of the glass panes 28 and 30 in the Pig. 1, 2 and 5 with a single sealing strip 34 to you can also wrap two strips 50 and 52 of the type of the strip 34 as shown in Figure 4. Thereby ge *

909885 / OOtS

ίΐίΐ, - 't for whom: the stripes 50 and 52 each overlap the outside of the relevant 3eueibe 28 and 30 as well as the relevant üoneijitel bA äeo Acstandsbaiters 3> 2. 2a the distance ohaltör 52 is made of i-metal and is therefore impermeable, is used in the case of the in Jb * iß. 4 specified arrangement; likewise Avie in the arrangement according to i. ' ^! ig. 1 to 3 the space between the panes 28 and 30 is perfectly sealed against the ingress of oven moisture

Eh wurue, '-. Eiundeh, last For the practical implementation of the invention, a JLlUi.iiuiuiis film coated with pressure-sensitive bilicon adhesive is dsnn'Euiriedenstelleiid if the film has a thickness of C.05: .x (C, 0C2 inches) has una. It is possible to keep the foodstuff over a temperature of 2 ° 0 (55C ° ii ^v ) stable, but it is also important to use anaerobic J3and- or otreiiraaterialien as well as anaerial iClebeans that can withstand such temperatures It is also important that the sealing strip and adhesive withstand the low ambient temperatures that can occur during shipping and storage of the oven. The above-mentioned strip material made of aluminum foil coated with silicone adhesive produces a flexible seal which, in the event of fluctuations in the temperature of the window, enables the glass to expand and contract without the occurrence of tension in the glass.

909885/0015

Figs. 5 and 6 show a construction in which, instead of that in the glass pane 30 establishing the connection with the outside air Breathing holes 44 are provided, the spacer and the Frames are designed. that breathing can take place between the edge of the glass and the adjacent ^ and -of the frame. At this point, the spacer 134 is along one of its sides

The edge is provided with one or more small depressions or bulges 136 and the adjoining lower edge also has one or more small holes 138 so that the lower edge of the glass pane is separated from the leg 152 of the spacer and the lower part 154 of the Frame is slightly spaced. As a result, the glass pane is held between the curvatures 13'6 and 138 at a distance from the spacer and from the frame, so that between the space enclosed by the panes 28 and 30 and the spacer 134 and the external environment, which the glass

. Disk 30 is exposed, a breathing passage or a breathing opening is formed.

In this embodiment, the tenter frame has 140 for the unit an I-shaped lower wall 154 and a part 142 that an edging strip 144 carries the parting line between the Glass pane 30 and the outer wall 16C of the furnace closure covered. A stripe 162 identical to the Jtr elf en 52 after i'ig «4 is by an adhesive T64 a.m leg 152 of the spacer

as es / 00 τs

134 "as well as attached to the inner surface of the frame 140, so that the ox tire apart from the points of the ouples 136 and 13 is kept at a distance from the lower ^ and the glass pane 30; and thereby the above-mentioned connection with the deu haum between the glass ooc eixben 2b and 30. It is sufficient to provide such breathing along one edge of the glass pane 30, for example along the lower edge, viohei the upper edge and the outer edges of the glass pane 30 in the manner roped for the bpane 28 through a _r j, Separate strips, for example the strip 5C, can be sealingly connected to the spacer 134 '. Breathing can, in any case, also in the manner ^{shown in i'i, c} ; o 6 on two or even on all four edges of the glass pane 30, in which case the border or window ledge 144 can touch the outer surface of the glass pane 30 and press the pane against the spacer.

909885/0015

Claims (1)

Claims iaassss: s5 =: s = 3sss3S3 = s: = ssss 1.) Penster unit for oven doors, characterized by two tempered glass panes spaced apart from one another and a metal spacer arranged between the panes at their edges, the outer edges of the panes are connected by a sealing strip so that the panes with the spacer between them are firmly attached assembled unit, and being wrapped around Discs are encompassed on their periphery by a rigid retaining frame in which the unit is clamped. 2.) Window unit according to claim 1, characterized in that the strip is made of metal foil. 5 ·) Penet unit according to claim 1, characterized in that the strip is made of aluminum foil coated with pressure sensitive adhesive. 4.) Penet unit according to claim 1, characterized in that a tone of one side of the unit in the space between the glass panes leading breathing opening is provided. 909885/0015 5.} Window unit according to claim 1, characterized in that one of the glass panes is provided with a breathing hole « 6.) Window unit according to claim 1, characterized in that that a peripheral part of the one glass sheet is arranged with respect to the frame and the spacer so that a from one side of the unit into the space between the Breathing opening leading to glass panes is formed 309 $$ 5 / OD1S