Classifications

• • E—FIXED CONSTRUCTIONS
  • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
  • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
  • E06B7/00—Special arrangements or measures in connection with doors or windows
  • E06B7/16—Sealing arrangements on wings or parts co-operating with the wings
  • E06B7/22—Sealing arrangements on wings or parts co-operating with the wings by means of elastic edgings, e.g. elastic rubber tubes; by means of resilient edgings, e.g. felt or plush strips, resilient metal strips
  • E06B7/23—Plastic, sponge rubber, or like strips or tubes
  • E06B7/2314—Plastic, sponge rubber, or like strips or tubes characterised by the material
• • E—FIXED CONSTRUCTIONS
  • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
  • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
  • E06B7/00—Special arrangements or measures in connection with doors or windows
  • E06B7/16—Sealing arrangements on wings or parts co-operating with the wings
  • E06B7/22—Sealing arrangements on wings or parts co-operating with the wings by means of elastic edgings, e.g. elastic rubber tubes; by means of resilient edgings, e.g. felt or plush strips, resilient metal strips
  • E06B7/23—Plastic, sponge rubber, or like strips or tubes
  • E06B7/2305—Plastic, sponge rubber, or like strips or tubes with an integrally formed part for fixing the edging
  • E06B7/2307—Plastic, sponge rubber, or like strips or tubes with an integrally formed part for fixing the edging with a single sealing-line or -plane between the wing and the part co-operating with the wing
  • E06B7/2309—Plastic, sponge rubber, or like strips or tubes with an integrally formed part for fixing the edging with a single sealing-line or -plane between the wing and the part co-operating with the wing with a hollow sealing part
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
  • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
  • F25D23/00—General constructional features
  • F25D23/08—Parts formed wholly or mainly of plastics materials
  • F25D23/082—Strips
  • F25D23/087—Sealing strips
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
  • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
  • F25D2201/00—Insulation
  • F25D2201/30—Insulation with respect to sound
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
  • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
  • F25D23/00—General constructional features
  • F25D23/02—Doors; Covers
  • F25D23/028—Details

Definitions

• the invention relates to a sealing profile for a cooling device sliding cover according to the preamble of claim 1.
• the sealing profile is intended to prevent the formation of gaps between the cover and slide guide / strip, which can arise, for example, due to manufacturing-related tolerances and deviations in the sliding cover or the slide guides / strips.
• the gap formation causes an air exchange between the environment and the cooling space, with warmer outside air entering the cooling space and having an energy-dissipating effect and thus reducing the overall efficiency of the cooling device. Furthermore, an increasing icing of the cold room is brought about.
• a sliding lid device for freezers or the like is known, a cover unit with a frame arrangement in connection with is binding and this frame assembly is movable in a direction of displacement and the elastic sealing unit is releasably attached to the sliding lid device.
• the sealing unit preferably consists of soft polyvinyl chloride.
• the sealing active function will decrease in the closed state during the life of the seal of the sliding cover, since the prestressing of the sealing unit decreases due to material-related relaxation processes and material fatigue, so that the entire sealing frame unit must be replaced. The same is due to the thermal load on the seal in connection with the mechanical abrasion caused by the opening and closing processes of the sliding cover.
• the temperature of the seal will increase as a result of the resulting contact with the slide rail which is almost at room temperature, so that in particular the slide surfaces of the seal are increasingly exposed to the temperature alternating load play when using the sliding cover arrangement.
• AT 005 408 U1 describes a sliding cover for a cooling device which is slidably mounted in sliding guides of the cooling device and sliding strips are provided which have sealing strip lips which cooperate with the sliding guides outside their sliding surfaces.
• the aim is to largely avoid the risk of icing due to the air exchange in the area of the sliding seal, without influencing the sliding movement of the sliding cover and its ease of movement.
• the The sealing lip is designed to be flexurally elastic, so that manufacturing tolerances in the area of the sliding guide of the freezer are easy to compensate for and an air gap between the sealing strip / lip and sliding guide is avoided.
• the sealing lip is arranged between two edge beads of the sealing strips forming treads.
• the seal must have sufficient pretension to ensure that the cover has a sealing effect when installed.
• the associated enlargement of the contact area between the cover and the sliding guide thus causes an increase in the force required to move / move the cover with the aforementioned disadvantages.
• material fatigue and wear phenomena are to be expected over the duration of the creep, which have an adverse effect on the sealing property of the sealing lip.
• the function of the seal structure in the event that the sealing lip no longer comes to bear sealingly as a result of the material wear on the surface of the sliding surface is adversely affected or canceled.
• opening the sliding cover causes warm air to flow over the sliding guides and condensation can occur along the sliding surface of the guides due to the temperature difference between incoming air and the sliding guides.
• this condensate causes the sealing lip to freeze on the sliding guide, so that the "sticking / sticking" sealing lip is elongated when the sliding cover moves.
• This can cause expansion forces in the area of the tear limit to cause cracks / microcracks in the seal or in the Lead sealing surface, which reduce the sealing property of the sealing lip or are the starting point of material fatigue.
• the invention has for its object to provide a sealing profile for cooling device sliding cover and specify a profile shape for it, so that the disadvantages mentioned in the prior art are avoided.
• the sealing bellows has bead-shaped strips can be provided along its surface, preferably in the longitudinal direction of the profile, the distance between the strips being in the range from 0J to 5 mm and the strips made of a polymer material comprising polyethylene and / or polyoxymethylene and / or polyamide and / or polypropylene and / or polyvinyl chloride - polytetrafluoroethylene mixture and / or a fluoropolymer and / or a fluoroethylene propylene polymer and / or polybutylene terephthalate (PBT) and / or polycarbonate (PC) and / or polycarbonate
• the sealing profile bellows thus acts as an elastic element and prevents the formation of gaps between the sliding cover and sliding guide, with laterally arranged articulation points adapting the deformation of the sealing bellows to the surface pressure generated by the sliding cover.
• the modulus of elasticity of the sealing bellows material is preferably in the range between 1 to 400 N / mm 2 , the Shore hardness of the sealing bellows material in the range between Shore A 20 to Shore A 98; the wall thickness of the sealing bellows is in the range between 0.2 to 5 mm and the wall thickness of the joint points is in the range between 0J to 4.8 mm.
• the upper side of the sealing foot forms together with the sealing bellows conclusively a hollow chamber and the proportion of length of the top of the sealing foot (see FIG. 1) on the circumferential wall of the sealing bellows / hollow chamber comprises 5 to 80%, the sealing foot having latching elements with holding lugs arranged laterally, consisting entirely of a polymer material comprising a polyoximethylene and / or a polyamide and / or an acrylonitrile-styrene-acrylic ester copolymer and / or a polyvinyl chloride and / or a polypropylene and / or a polyethylene and / or an elastomer-modified polypropylene and / or an acrylic-butadiene-styrene copolymer and / or a styrene-butadiene copolymer and / or polybutylene terephthalate (PBT) and / or polycarbonate (PC) and / or polycarbonate blends and
• the geometric design of the strips which are integrally connected to the bellows surface is also important with a view to the frictional forces that occur between the seal and sliding guide on the refrigerator / freezer body and the sliding cover lying thereon. It is well known that the heavy weight load on the sliding cover arrangement causes the high frictional forces on the seal, which cause material wear and material fatigue.
• the sealing strips of the bellows surface can be arranged symmetrically and / or equidistantly along the direction of the sliding course, as a result of which the optimum Weight distribution of the sliding cover on the sealing profile is guaranteed; however, this does not limit the invention.
• a distance between the sealing strips along the bellows surface to each other according to claim 4 ensures a good sealing effect of the sealing profile.
• the strips which consist of a tribologically optimized “harder” material, are designed in such a way that, in cooperation with the sealing bellows, a sealing arrangement is created which is deformable by the surface pressure of the sliding cover and which has an improved elastic and / or quasi-elastic resilience.
• a sealing profile according to claim 1 with a sliding guide consisting of a polytetrafluoroethylene-polyvinyl chloride mixture causes the coefficient of friction of a sliding cover arrangement to be in the range between 0J to 0.2.
• an additional microstructure according to claim 6 along the surface of the profile sealing strips brings about an advantageous further reduction of the sliding resistance / the coefficient of friction to values according to claim 7 for a sliding cover arrangement.
• the profile sealing strips along the opening area of a sliding cover used are only partially provided with a slidable microstructure.
• Another object of the invention is to provide a sealing frame arrangement according to one of claims 1 to 9.
• Fig. 1 shows schematically an inventive sealing profile in section
• Fig. 2 shows schematically a sealing profile installed in a sliding cover for a cooling device
• Figure 1 shows an embodiment of a sealing profile (1) for a cooling device sliding cover, not shown, of a cooling device in a sectional view, consisting of a sealing bellows (2) and a sealing foot (3), the foot part (3) for the purpose of fastening the sealing profile (1) in an intended holding groove serves the access opening to the cooling device and thus snaps into the receiving groove in a snap-lock or insertable manner.
• sealing strips (7) arranged longitudinally on the sealing bellows surface (2), which are arranged at a distance from one another in the range between 0J to 5 mm, the sealing strips (7) made of a polymer material comprising polyethylene and / or polyoxymethylene and / or polyamide and / or polypropylene and / or polyvinyl chloride - polytetrafluoroethylene mixture and / or a fluoropolymer and / or a fluoropropylene polymer and / or polybutylene terephthalate (PBT) and / or polycarbonate (PC) and / or polycarbonate blends and / or polyethylene terephthalate (PET) and / or impact-modified polymethyl methacrylate (PMMA) and / or polypropylene oxide-styrene-butadiene and blends and / or polyphenylene oxide-polyamide blend (PPO-PA) exist and the bead
• the sealing profile bellows (2) acts as an elastic element and thus prevents the formation of a gap between the sliding cover and the sliding guide (4) (see Figure 2).
• Laterally arranged articulation points (8) adapt the deformation of the sealing bellows (2) to the weight-related surface pressure generated by the sliding cover, the elastic modulus of the sealing bellows material being in the range between 1 and 400 N / mm 2 .
• the wall thickness (d1) of the sealing bellows is designed in the range between 0.2 to 5 mm and the wall thickness (d2) of the joint points (8) in the range between 0J to 4.8 mm.
• the Shore hardness of the sealing bellows material is in the range between Shore A 20 to Shore A 98, the sealing bellows material being made of a styrene-based thermoplastic polymer (TPE-S) and / or olefin-based thermoplastic polymer (TPE-O) and / or partially cross-linked or fully cross-linked thermoplastic elastomer based on olefin (TPE-V) and / or thermoplastic elastomer based on polyurethane (TPE-U) and / or thermoplastic elastomer based on polyether (TPE-A) and / or thermoplastic elastomer based on polyether (TPE-E) and / or Soft polyvinyl chloride (PVC-P) exists.
• TPE-S styrene-based thermoplastic polymer
• TPE-O olefin-based thermoplastic polymer
• TPE-V olefin
• TPE-U polyurethane
• the sealing foot has latching elements on the side with retaining lugs (9) and consists entirely of a polymer material comprising polyoximethylene and / or polyamide and / or acrylonitrile-styrene-acrylic ester copolymer and / or polyvinyl chloride and / or polypropylene and / or polyethylene and / or elastomer-modified polypropylene and / or acrylic-butadiene-styrene copolymer and / or styrene-butadiene copolymer and / or polybutylene terephthalate (PBT) and / or polycarbonate (PC) and / or polycarbonate blends and / or polyethylene terephthalate (PET) and / or impact-modified polymethyl methacrylate (PMMA ) and / or polyphenylene oxide-styrene-butadiene and blends and / or polyphenylene oxide-polyamide bend (PPO-
• the ratio (aspect ratio) of the base width to the height of the sealing strips (7) lies in the range between 5 to 1 and 1 to 5.
• the sealing strips (7) can be arranged symmetrically and / or equidistantly.
• the distance between the sealing strips is in the range between 1.2 and 2 mm; other distances are conceivable according to the invention.
• the surface of the sealing strips (7) is provided with a microstructure, as a result of which a reduction in the sliding resistance / coefficient of friction can be achieved.
• the seal according to the invention is produced in a coextrusion process.
• FIG. 2 shows the seal (1) according to the invention inserted into a cooling device sliding cover of a cooling device in a sectional view according to FIG. 1, the foot part (3) being snap-lock-type or insertable for the purpose of fastening the sealing profile (1) in an intended receiving / holding groove of the border frame ( 5) with sliding cover glass (6) attached to it.
• the sealing strips (7) are cohesively connected to the sealing bellows (2) and rest on a sliding guide (4) of the cooling device, not shown.
• a sealing frame arrangement according to claims 1 to 9 showed the advantages resulting from the invention.

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• Engineering & Computer Science (AREA)
• Civil Engineering (AREA)
• Structural Engineering (AREA)
• Chemical & Material Sciences (AREA)
• Combustion & Propulsion (AREA)
• Physics & Mathematics (AREA)
• Mechanical Engineering (AREA)
• Thermal Sciences (AREA)
• General Engineering & Computer Science (AREA)
• Compositions Of Macromolecular Compounds (AREA)
• Refrigerator Housings (AREA)
• Specific Sealing Or Ventilating Devices For Doors And Windows (AREA)
• Sealing Devices (AREA)

Priority Applications (6)

Applications Claiming Priority (2)

Publications (1)

Family

ID=29265710

Family Applications (1)

Country Status (9)

Cited By (2)

Families Citing this family (10)

Citations (7)

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• 2003
  • 2003-03-12 UA UAU200601217U patent/UA16513U/uk unknown
  • 2003-08-09 DE DE20312327U patent/DE20312327U1/de not_active Expired - Lifetime
  • 2003-12-03 EP EP03789114A patent/EP1651914B1/de not_active Expired - Lifetime
  • 2003-12-03 DE DE50312982T patent/DE50312982D1/de not_active Expired - Lifetime
  • 2003-12-03 ES ES03789114T patent/ES2349771T3/es not_active Expired - Lifetime
  • 2003-12-03 WO PCT/EP2003/013608 patent/WO2005015097A1/de active Application Filing
  • 2003-12-03 AT AT03789114T patent/ATE477461T1/de active
  • 2003-12-03 AT AT0914803U patent/AT9452U1/de not_active IP Right Cessation
  • 2003-12-03 AU AU2003293750A patent/AU2003293750A1/en not_active Abandoned
  • 2003-12-03 RU RU2006106918/22U patent/RU57880U1/ru not_active IP Right Cessation
  • 2003-12-03 PT PT03789114T patent/PT1651914E/pt unknown

Patent Citations (7)

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