AN ARRANGEMENT FOR OUTER DOORS AND THE LIKE WHICH SEPARATE COLD AND HOT SPACES FROM EACH OTHER

Abstract: Arrangement for outer doors and the like which separate cold and hot spaces from each other, x comprising a per se known frame construction consisting of two spaced-apart profiles (1, 2) of metal or B other material having high thermal conductivity and members (3) inserted in grooves in the profiles to interlock the profiles, said members consisting of a material the thermal conductivity of which is inferior to that of the metal material, thin sheets (4 and 10) inserted in pocket-like recesses (5) in the profiles, and defining the inside and outside of the door, and foamed-in-place material (6) filling out the hollow space between said sheets. The novelty resides in that one of said sheets has been made non-influenceable by temperature variations and consists of a fabric (10) of woven glass or like material fastened up in the frame.

Description: AN ARRANGEMENT FOR OUTER DOORS AND THE LIKE WHICH SEPARATE COLD AND HOT SPACES FROM EACH OTHER The present invention relates to an arrangement for outer doors and the like which separate cold and hot spaces from each other, comprising a per se known frame construction consisting of two spaced-apart profiles of metal or other material having high heat conductivity and members inserted in grooves in the respective profile to interlock the profiles, said members consisting of a material the thermal conductivity of which is inferior to that of the metal material, thin sheets inserted in pocket-like recesses in the respective profile and: e¬ fining the inside and outside of the door, and foamed- in-place cellular material filling out the interior of the door. Problems arise in outer doors and the like, especial- ly during the cold season, concerning the fitting of the door in the door frame because one side of the door leaf is exposed to heat and the other to cold, which results in that the side exposed to the cold contracts and the door buckles. This inconvenience is evident in such doors of the type mentioned above where the inner and the outer sides consist of coherent sheets of metal which are very sensitive to variations in temperature. The object of the invention is to provide an arrange¬ ment which eliminates the inconveniences caused by tempera- ture variations, and the essential characteristic of the arrangement in question resides in that one of the sheets in the door, preferably that constituting the outer side thereof, which is essentially uninfluenceable by tempera¬ ture changes at least in the vertical sense of the door, consists of a fabric of woven glass or like material which has been fastened up and secured in the pocket-like re¬ cesses in the outer profiles of the frame construction, suitably by means of strips of sheet metal or like materi- al, cellular material foamed in place and introduced into the interior of the door, being adapted, on one hand, to penetrate into said pocket-like recesses to finally fix the edges of the fabric relative to the frame construction and, on the other hand, to penetrate through the fabric and adhere to an external covering arranged on the out¬ side of the fabric and consisting of panels or the like freely movable relative to each other and to the frame construction. The invention will be described more fully herein¬ after with reference to the accompanying drawing in which: Fig. 1 is a front view of a door arranged according to the invention; and Fig. 2 is a cross-sectional view on a larger scale of the edge portion of a preferred embodiment of such a door. The door includes a frame which consists of two members 1 and 2 of metal or other resistant material having high thermal conductivity, said members being interlocked by means of an intermediate member or pro¬ file 3 of material having low thermal conductivity. One side or, more exactly, the inside of the door, consists of a sheet of metal or other thin sheet 4 of similar material which is inserted and retained in pockets 5 in the inner frame member 2, on one hand, due to the wedging action but principally due to the pressure and ad¬ herence of the foamed material 6. The intermediate member 3 consists of a specifically shaped profile of plastic material. The profile has a U-shaped central portion 7, which serves as a spacer between the frame members 1 and 2, a flanges 8 projecting on either side and extending into the grooves facing each other in the frame member. On the side facing the interior of the door the flanges 8 are provided with in- clined barb-like ribs 9 which engage the side wall of the recess of the respective frame member. The inclined positioning itself produces a retaining effect, whereby O the frame members are kept together during mounting. When the foamable material 6 is introduced it will penetrate into the profile recesses and due to the ex¬ pansion of the material the barb-like ribs 9 will be pressed with increased force against the inner side of the recesses at the same time as the flanges 8 are pressed against the opposite side thereof. The plastic material also fills out the U-shaped central portion 7. The outer side of the door might consist of a metal sheet inserted in similar pockets and fixed therein by foaming. The tendency of a door, covered by an integral sheet of metal on its inside and its outside, to buckle due to temperature differences between the inside and outside may be reduced in that one of the metal sheets, preferably the inner one, is prestressed while the outer one is left unaffected. At substantially comparable temperatures at the in- and. outsides the door will thus bulge to some degree but straighten again into plane position as the temperature on the outside decreases. As the bulge would only amount to a few millimetres this is of no significance to the sealing function of the door. The doors shown in the drawing are designed in an¬ other way in order to be insensitive to temperature differences. Since the side causing deformation of the door usually is that side which is exposed to varying temperatures one has chosen to make the outside of the door as uninfluenceable as possible by temperature differences. The inside of the door is influenced, all the year round, by a substantially constant temperature, and therefore no specific steps are required. In the embodiment shown a coherent sheet on layer 10 of woven glass fabric or the like is fastened on the outside of the door. The sheet 10 is inserted in the pockets 5 extending along the frame parts 1 and in the initial phase it is wedged fast suitably by means of sheet metal strips or the like 11 over which the edges of the woven fabric sheet can be folded. A wooden covering on the outside of the door is shown at 12. This covering, which suitably consists of a number of transverse or longitudinal panels, has its edges inserted under bent-over flanges 13 in the frame profile 1. When the foamable cellular plastic material is intro¬ duced into the door it will penetrate through the woven fabric sheet 10 and bound also to the wooden panels 12. Cellular plastic material also penetrates into the pockets 5 and thereby it will definitely fix the strips 11 and the edges of the woven fabric sheet 10 relative to the frame profile 1. The woven glass fabric sheet is to a very little ex- tent influencable by temperature changes and constitutes a rigidification for the door frame. As described above, the wood panels are so mounted that they are movable rela¬ tive to each other and the fact that they are retained against said fabric sheet by cellular plastic material which has penetrated through it, does not change anything in this respect since the power of cullular plastic material to transiήit mortion from one wooden panel to another is insignificant. In case the door is completed with profiled panels of sheet metal or like material to which the foamed material bonds, then use should be made of overlap joints between the profiles, covered on the inside with foil strips of a material to which the foamed material does not adhere. This prevents transmission of motion and coaction between the panels and also the possibility of deformation of the door caused by coaction between several panels. The invention should not be considered limited to that described in the foregoing and shown in the drawing but may be modified in various ways within the scope of the appendant claims.

Claims: CLAIMS 1. An arrangement for outer doors or the like, which separate cold and hot spaces from each other, comprising a per se known frame construction consisting of two spaced- apart profiles (1, 2) of metal or other material having high thermal conductivity and members (3) inserted in grooves in the respective profile to interlock the pro¬ files, said members (3) consisting of a material the thermal conductivity of which is inferior to that of the metal material, thin sheets inserted in pocket-like re- cesses (5) in the respective profile and forming the in¬ side and outside of the door, and foamed-in-place cellular material (10) filling out the interior of the door, where¬ in one of the sheets in the door, preferably that (10) con¬ stituting the outer side thereof, which is essentially un- influenceable by temperature changes at least in the ver¬ tical sense of the door, consists of a fabric of woven glass or like material which has been fastened up and se¬ cured in the pocket-like recesses (5) in the outer pro¬ files (1) of the frame construction, suitably by means of strips (11) of sheet metal or like material, cellular material (6) foamed in place and introduced into the interior of the door, being adapted, on one hand, to pe¬ netrate into said pocket-like recesses to finally fix the edges of the fabric relative to the frame construction and, on the other hand, to penetrate through the fabric and adhere to an external covering (12) , arranged on the outside of the fabric and consisting of panels or the like freely movable relative to each other and to the frame construction. 2. Arrangement as claimed in claim 1, wherein the members (3) interconnecting the profiles (1, 2) of the frame construction comprise a profile of plastic or simi¬ lar material which has a central, preferably U-shaped portion (7) serving as a spacing means for the profiles of the frame construction, and flanges (8) which can be inserted from either side into the grooves in the frame profiles and are provided with barb-like ribs. 3. Arrangement as claimed in claim 1, wherein cover strips of a material to which the foamed material has no adhesivety, are arranged over joints between the panels of an outside covering against which the foamed material bears.

Inventors: WIMMER E
Applicants: WIMMER E
Application year: 1979
Main classification: E06B3
IPC codes: E06B3