Classifications

• • 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
  • F25D23/06—Walls
  • F25D23/062—Walls defining a cabinet
  • F25D23/064—Walls defining a cabinet formed by moulding, e.g. moulding in situ
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
  • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
  • B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
  • B29C44/34—Auxiliary operations
  • B29C44/58—Moulds
  • B29C44/588—Moulds with means for venting, e.g. releasing foaming gas

Definitions

• Refrigerating appliance method and apparatus for its production
• the invention relates to a refrigeration device having at least one housing part, which has at least one covering area.
• a refrigeration device in particular domestic refrigeration device such as a refrigerator, freezer or a fridge freezer usually various built-in parts and / or attachments are preassembled in a deep-drawn plastic inner container as a housing part.
• This pre-assembled inner container is assembled with one or more shuttering parts such as side wall parts, cardboard plates, plastic plates, Ausstopf beauver before, etc. ... to form a hollow body or hollow body.
• this first hollow body for the inner container of the refrigerator usually also has its door as a further housing part of a refrigerator on a hollow body.
• the hollow body of the respective housing part is filled in practice with a thermal insulation material by a polymer material, in particular polyurethane or a synthetic resin material supplied with compressed air and / or other propellant gas is injected into the cavity of the hollow body and driven therein expands the pressure of the propellant gas.
• the propellant gas is also generated due to chemical reactions of one or more substances admixed with the liquid precursor of the insulating material.
• the drive by the expanding propellant gas ensures that the polymer material or synthetic resin material forms a heat-insulating foam, which spreads into the entire cavity of the respective hollow body into a remote angle and finally fills it. After setting and curing of the heat-insulating foam, a closed insulating foam layer is formed in the entire cavity of the respective hollow body.
• an insulating material body for a refrigerator housing part such as for a door shell or a refrigerator inner container
• its manufacture in practice may be complicated or impaired by a variety of boundary conditions to be considered.
• the hollow body requires the filling of the respective hollow body with an insulating liquid material in its precursor, which expands by propellant, that the hollow body as completely as possible, ie hermetically sealed before injecting the liquid precursor of the insulating material. Otherwise, liquid foam could still escape from through openings, openings, cracks, gaps or the like in the respective hollow body into the open, in particular into the interior of the inner container of the cooling device.
• At least one defined outlet in at least one boundary wall of the hollow body is even intentionally left open in order to displace air and / or propellant gas from the hollow space of the hollow body during the foaming process or expansion of the insulation material to discharge specifically. If in fact air and / or propellant gas hermetically sealed in the hollow body, this could lead to the formation of so-called voids or other material defects with respect to the desired consistency and material properties in the cured insulation material of the finished insulation material body.
• a hollow chamber or cavity on the housing part such as the intermediate space between the cooling and freezing compartment of a refrigerator / freezer combination, on the respective attachment, or at the attachment point between the housing part and the respective attachment is covered with pieces of adhesive tape, to prevent too much insulating material from entering such a hollow chamber reached and then missing at another point, which would lead there to an impermissible material shrinkage of the desired insulating material body.
• adhesive tapes are also used in the manufacturing process, mounting and / or built-in components on the device part, in particular to fix the inner container or on the outer casing of the hollow body, for example, to prevent them during further assembly, especially during injection and Explode the insulating material again before the solidification of the insulating material has used and has formed a cured insulation material body.
• the invention has for its object to provide a refrigerator with at least one housing part, which has at least one cover, which can be covered in a simpler and improved manner. According to the invention, this object is achieved in a refrigeration device of the type mentioned above in that on the cover area, a covering with a gas-permeable structure is applied, which is formed from a plurality of contiguous, thread-like individual elements of an adhesive.
• the respective cover means with its gas-permeable structure of a plurality of contiguous adhesive threads allows for improved production of refrigerators. It can be in an advantageous manner easily and quickly, in particular material-saving, at the respective cover region of a housing part of the refrigerator, in particular directly where it is desired to generate. Due to its specific structure and the associated material properties, it can be used in a variety of ways in the manufacture of housing parts for refrigerators.
• an opening or opening in the respective housing part, in particular in at least one wall of the inner container or a door of a refrigerator to be manufactured and / or in at least one shuttering part of the outer hollow body of the inner container or the door, by such a structured covering means in be advantageously covered so that when filling the hollow body with means Propellant gas foaming insulation material for a displaced air and / or propellant gas through the gas-permeable structure of the cover into the interior of the inner container and / or the outside largely unhindered escape, but on the other hand at the same time the insulation material at the entrance and / or passage through the respective opening largely is hindered.
• the cover means is advantageously also designed to be stable and dense enough to retain the insulation material during filling and / or foaming until it cures and a kind of barrier or barrier against leakage of the insulation material from the hollow body of the respective housing part, such as the inner container or the door, to provide. As a result, unwanted contamination of visible surfaces of the respective housing part with insulation material are largely avoided.
• the respective cover means is advantageously composed of individual, preferably non-directional, elongated adhesive threads which are contiguous and preferably form a three-dimensional structure which is too finely porous for an insulating material passage, but continuous for gaseous media.
• individual, preferably non-directional, elongated adhesive threads which are contiguous and preferably form a three-dimensional structure which is too finely porous for an insulating material passage, but continuous for gaseous media.
• the inventively formed covering means it is also possible in an advantageous manner, at least provisionally to fix mounting and / or built-in parts on at least one housing part of the refrigerator for further assembly steps, i. lagezuêtêtn.
• it in addition to its function as a sealant against insulation material passage while at the same time maintaining the gas permeability, it can also function as a fixing or fastening means.
• the housing part is formed for example by a door shell of a refrigerator.
• the housing part is formed in particular by at least one outer wall of a cooling and / or freezer compartment having inner container of a refrigeration device, which serves to receive to be cooled and / or to be frozen Good.
• the housing part preferably has a hollow body, in which an insulating material is introduced.
• a insulating sealing foam, in particular PU foam, or a thermosetting insulating material is preferably selected as the insulating material.
• the insulating material is filled in a preliminary stage in the liquid state in the hollow body, before being brought there by foaming in an expanded state and cured.
• This hollow body is in particular formed between at least one outer wall of the housing part and at least one casing part which partially or completely surrounds the casing part.
• the covering area on the respective housing part of the refrigerating appliance can be formed in particular by an opening in at least one wall of the hollow body of the housing part.
• the covering means structured according to the invention, with its gas-permeable structure, expediently covers this opening in such a way that a barrier is provided for the insulating material to escape from the hollow body.
• the gap width between the thread-shaped adhesive elements of the respective covering means is preferably chosen such that an outlet through the opening for venting the hollow body is provided only for air and / or propellant gas enclosed in the hollow body from the insulating material during its expansion.
• the covering region of the respective covering means may in particular also be formed by a contact zone, a sealing zone, and / or fixing zone of at least one attachment part of the housing part of the cooling device. forms his.
• the respective attachment can expediently be partially or completely embedded in the insulating material of the housing part or adjacent to this.
• the respective attachment can be formed, for example, by a backing part which covers an opening in at least one wall of the housing part on the insulation material side and / or on the insulation material side and has a sealing zone around the opening which is covered by the masking means structured according to the invention.
• the attachment may in particular be formed, for example, by a pipe, a conduit, a wiring harness, an evaporator, a profile element, a holder for an inner component to be accommodated in the housing part or another attachment and / or installation component of the refrigeration device.
• the thread thickness of the thread-shaped adhesive elementary elements can be expediently chosen between 1/1000 mm and 5/100 mm.
• the adhesive may preferably be a hot melt adhesive or other thermosetting adhesive.
• the invention also relates to a method for producing a refrigeration device having at least one housing part, which has at least one covering region, which is characterized in that a covering means with a gas-permeable structure is applied to the covering region, which consists of a plurality of contiguous, thread-like individual elements of an adhesive is formed.
• the filamentary adhesive-individual elements are sprayed swirled particularly vortex in the hot-tacky state of at least one Aussprühvorraum, in particular nozzle device, these swirled thread-like individual elements already partially or completely cured on their trajectory to the respective covering area, and this partially or fully cured, thread-shaped individual elements over the respective cover area arranged as a gas-permeable structure contiguous.
• the invention also relates to a device for producing a refrigeration device having at least one housing part, which has at least one cover region, which is characterized in that at least one Aussprühvorraum for applying a gas-permeable structure of a covering means of a plurality of continuous, thread-like individual elements of an adhesive on the Cover is provided.
• the specific structure of the covering means can be produced in an advantageous manner directly at the location of the respectively desired covering area with at least one spraying device.
• This ejection device allows for improved integration of a cover mounting step for covering one or more cover portions of a housing part and / or a fixing mounting step for fixing one or more attachments to the respective housing part in an automated production line for the manufacture of refrigerators as this so far such as manual bonding of tapes was possible.
• cover means for multiple use allows possibly even further, improved automation of the housing production of refrigerators.
• a Fixiermontagestation for attaching attachments and / or built-in parts and in a downstream sealing each the same type of Aussprühvorraum, in particular nozzle device for applying the respective inventively embodied covering means.
• cover means designed according to the invention can advantageously be used for sealing measures and for fixing measures.
• the Aussprühvorraum is preferably suspended in such a way that it is a pendulum movement allows.
• all areas or partial areas of a desired covering area can be detected in an advantageous manner and covered with a covering means structured in accordance with the invention.
• the respective spraying device is positioned at such a distance from the respective covering region, that the filament-shaped individual elements, which are preferably vortexed in the hot-tacky state, partially or completely cure on their trajectory to the covering region, before they open impinge on the respective cover area to be covered.
• FIG. 1 is a perspective view of a first embodiment of an inner container for a refrigeration device, which is provided with subsequent covering of insulating material at a plurality of covering areas with covering means according to an advantageous embodiment variant of the inventive method,
• FIG. 1 and one or more externally arranged shuttering parts, a hollow body into which intumescent insulation material is introduced to form an insulation material sheath,
• 3A is a schematic longitudinal sectional view of a side wall of a second embodiment of an inner container for a refrigeration device in the region of a passage opening, which is covered by a covering agent structured according to the invention during foaming of insulating material in the hollow body,
• FIG. 3B shows a schematic frontal view of the passage opening of FIG. 3B, which is covered by the covering means structured in accordance with the invention
• Figure 4 is a perspective view of the second embodiment of the inner container of Figures 3A, 3B, on the various parts according to an advantageous variant of the inventive method by means of structured according to the invention
• FIG. 5 shows a greatly enlarged, schematic illustration of the microstructure of the covering means of FIGS. 1, 3A, 3B,
• Figure 7 shows a schematic representation of the assembly for an attachment of réellezu conventionaler of Figure 4 by means of one or more inventively generated
• FIG. 8 shows a schematic representation of the assembly of a backing part in an opening of a side wall of the inner container of FIG. 4 with the aid of a covering means produced according to the invention
• FIG. 9 shows a schematic cross-sectional view of a further exemplary embodiment for the preparation of an inner container of a refrigeration device according to a further advantageous variant of the method according to the invention in order to attach foamable insulating material to the outer walls of the inner container,
• FIG. 10 shows a schematic plan view of openings in a side wall of the inner container of FIG. 1, which have been sealed by covering means with a structurally embodied structure
• Figure 1 1 is a schematic representation of a section through an edge region of
• Figure 12 is a schematic representation of the assembly of an evaporator on the
• Figure 13 is a schematic representation of an exemplary production line, with the
• Inner container of a refrigerator according to an advantageous variant of the inventive method with an outer hollow body and a plurality of attachments prepared and an insulating material jacket is applied to the outer walls of the inner container.
• Figure 1 shows schematically in perspective view from the back side, a first embodiment of an inner container GT1 for a refrigeration device KG, in particular a refrigerator, a freezer or a fridge freezer. He is horizontally aligned here in the embodiment for mounting with respect to its longitudinal extent.
• the inner container GT1 has a cooling compartment KF and a freezer GF arranged side by side as separate inner compartments.
• one or more shuttering parts are attached at a predetermined gap distance to the rear wall and / or to the further side walls of the inner container GT1.
• a hollow body HK1 is formed between the outer walls of the inner container GT1 and one or more shuttering parts.
• FIG. 2 shows a longitudinal section of the inner container of FIG. 1 with a shuttering part VT1 mounted in this way.
• openings or openings in the inner container which serve for later installation of components of the refrigerator, are sealed by means of covering means.
• slot-like openings OF101-OF103 are provided in the two side walls of the refrigerating compartment KF. They are used for the later mounting of support plates in the cooling compartment KF.
• Other openings and openings are provided for a variety of other cultivation and / or built-in parts in the walls of the freezer compartment GF and the refrigerating compartment KF.
• the attachments or mounting parts may also be prior to the erection bring the shuttering part VT1 partially or completely introduced. Representing such inputs and attachments in through holes on the rear wall of the refrigerator compartment KF an attachment AT13 is inserted into a dash-dotted line indicated opening OF13.
• the opening OF13 and a surrounding area around it define a desired covering area AB13 which is framed in the form of a dot-dash line in FIG.
• These inputs and / or add-on parts may in this case partially protrude from their respective insertion opening at the rear or may be inserted largely flush relative to the respective outer wall of the inner container. Possibly.
• the inner container can also be one or more mounting and / or attachments attached to the outside of one or more closed wall portions of the outer walls of the inner container, without the installation and / or attachments are inserted into through holes to the interior of the inner container. Representing such installation and / or attachments are in the figure 1, two device components AT11, AT12 attached to a side wall wall and rear wall of the freezer compartment GF.
• adhesive KM is subjected to a turbulent flow VW by application of compressed air LU and by means of a correspondingly adapted nozzle cross-sectional geometry such that elongated adhesive threads KF1 with KFn are sprayed or flocculated at the nozzle head of the nozzle device DV.
• the adhesive KM is preferably chosen to be a hotmelt or other heat-fusible adhesive which curls on cooling.
• the nozzle parameters such as, for example, the amount of spray pressure, the melting point of the adhesive, the nozzle channel cross section, etc.
• Nozzle device DV and / or in particular their distance Dl to the respective cover area such as AB13 in FIG.
• the respective desired coverage area such as AB13
• Figure 1 includes the cover AB13 for the attachment AT13 both the outer contour of the attachment AT13 and at least one edge zone around this outer contour, by a remaining edge gap between the attachment AT13 and its associated passage opening OF13 in the rear wall of the cooling compartment KF and a Safety zone is formed around this edge gap.
• the partially or fully cured long-stretched adhesive threads KF1 with KFn are deposited in the respective desired covering area, such as AB13, on each other and side by side, forming a thin, three-dimensional framework.
• these macro-single-filaments form a three-dimensional non-directional macroscope, which is characterized in that its specific structure is too small for an insulator center passage, but permeable to enclosed gaseous media.
• the individual macro-adhesive threads are due to their temporally preceding turbulence during spraying from the nozzle device DV in particular substantially disordered or undirected, preferably randomly distributed.
• the connection of the individual adhesive threads is in particular due to the fact that the individual adhesive threads partially or completely fuse together at their common support points, since their adhesive material has not yet completely or sufficiently cooled and solidified at the respective point of impact.
• an adhesion of the individual adhesive threads can be brought about by adhesive and adhesive forces, since the adhesive material of the adhesive threads has not yet completely cured at the deposition location of the respective covering region.
• the individual adhesive threads may be joined together on the atomic level due to weak diffusion bonds. Additionally or independently thereof, the individual adhesive threads may also interlock with one another due to their surface structure and / or shape.
• the individual macro Adhesive threads which have been vortexed sprayed from the nozzle device DV and have been partially or completely cured on their trajectory to the respective covering area, as a loose, approximately fleece-like structure due to various attachment forces and diffusion bonds to each other.
• they form a net-like supporting framework which is sufficiently stable in order to hold both liquid insulating material IM, which is filled into the hollow body HK of the inner container GT1 (see FIG. 2), and the expanding heat-insulating material during foaming by means of propellant gas so that entry or passage of the thermal insulation material IM into or through the passage opening under the respective covering area to be sealed, such as AB13, into the interior of the inner container GT1 is largely avoided.
• the insulating material used is preferably a polymer material, in particular polyurethane, a curable synthetic resin material or another foamable insulating material or insulating material.
• FIG. 5 shows a greatly enlarged scanning electron micrograph of a section of the covering means thus formed from individual, elongated macro-adhesive filaments, such as AM13. Since the individual adhesive threads are swirled on exiting the nozzle device DV, they are stored at the respective covering area largely irregularly distributed, ie disordered or irregular side by side and one above the other. In particular, a gas-porous structure or a structure of a tangle of adhesive threads is formed.
• Their thread length FL is in each case selected in each case at least the maximum width of the respective opening to be covered. When viewed in cross-section approximately circular opening the filament length FL is at least equal to the diameter of this circular cross-sectional opening selected.
• the axial length FL of the adhesive threads is preferably selected between 5 mm and 80 mm, in particular 8 mm and 40 mm.
• the thread thickness of the thread-shaped individual elements KF1 with KFN is expediently chosen between 1/1000 mm and 5/100 mm.
• the framework structure of the cover means has between gaps of "mesh size" LU between 1/1000 mm and 1/100 mm are provided to the individual adhesive filaments
• the fiber density of a structure produced in this way is preferably chosen so that such gaps remain between the individual, elongated macroadhesive filaments that the thus produced Covering agent is gas permeable.
• FIG. 6 shows the spatial structure of a covering means in a greatly enlarged spatial representation.
• the cover area AB13 lies in a plane plane X, Y. In this plane and at different parallel elevations above it in a Z direction perpendicular to the X, Y plane, the individual adhesive threads KF1 with KFN are adjacent to one another as well as above each other, i.e. In simplified terms, in particular, it is confused or "criss-crossed" to form a three-dimensional structure of the covering means AM 13.
• the layer thickness HOE of the gas-permeable structure is preferably between 0.1 and 0.5 mm "Non-directional" macro-weft "whose structure or tangle of adhesive filaments is too small for an insulator passage but permeable to enclosed gaseous media.
• FIG. 3A a side wall SW3 of a one-piece inner container GT2 (see also associated FIG. 4) as a housing part of a refrigeration device KG is shown schematically and enlarged in a longitudinal section.
• This side wall SW3 st an outer casing part VT2 corresponding to the shuttering part VT1 in the two-piece inner container GT1 of Figuri or Figure 2 assigned.
• a passage opening OF3 is provided from the cavity of the hollow body HK2 into the interior of the inner container GT2. It has, viewed spatially, preferably an approximately circular cylindrical geometry shape.
• FIG. 3B shows a frontal view of the passage opening of FIG. 3A with the applied covering means AM3 viewed from the insulating foam side when viewed in the passage opening.
• a covering means AM3 with a gas-permeable structure which is formed from a plurality of contiguous, elongated adhesive threads, ie thread-shaped individual elements KF1 with KFN of the adhesive KM analogous to the structure of Figures 5, 6.
• the covering region AB3 of the covering means comprises both the inlet-side opening cross-sectional area of the passage OF3 and on both sides of the passage an annular safety overlapping zone around the passage opening OF3.
• the covering means AM3 spans the entrance area of the passage opening OF3 and also the outside wall AW3 of the inner container GT2 in an annular or annular edge zone around this entry opening.
• the covering means AM3 adheres to the outer wall AW3 on account of attachment forces such as adhesive forces of the adhesive material of the individual adhesive threads, micro-toothing between the adhesive threads and the material of the side wall SW3, fusion bonding of even hoter adhesive threads the material of the side wall SW3 and / or other macromolecular compounds and diffusion bonds at the atomic level between the individual elongated adhesive threads and the material of the side wall SW3.
• the nozzle device such as DV of Figure 1 is suitably set so that the thread length of the ejected, individual adhesive threads in particular each at least the maximum occurring width of the opening to be covered is selected.
• the thread length is thus preferably at least equal to the diameter of this circular cross-sectional opening selected.
• the thread thickness of the thread-shaped individual elements KF1 with KFN is expediently chosen between 1/1000 mm and 5/100 mm.
• the framework structure of the cover means has gaps between the individual adhesive filaments of "mesh size" LU between 1/1000 mm and 1/100 mm
• the fiber density of a structure produced in this way is preferably selected such that such gaps exist between the individual, elongated macroadhesive filaments
• the covering means AM3 with its gas-permeable structure spans the entry area of the through opening OF3 a fleece-like support framework.
• the gas-permeable structure of the cover AM3 thus allows a venting of the hollow body during introduction of a liquid precursor of the insulating material IM and its foaming process.
• air bubbles and propellant gas bubbles GB in the intumescent insulation material IM are schematically indicated by small circles.
• the outflow direction for the displaced air and / or the propellant gas is symbolized by arrows LS, which lead from the interior of the hollow body HK2 through the covering means AM3 into the passage opening OF3 and thus into the interior of the inner container GT2.
• its gas permeable structure functions as a kind of support structure for the insulating material IM in its foaming and expansion process.
• the covering means AM3 spans the opening OF3 with its gas-permeable structure in such a way that a barrier or barrier against its escape from the hollow body HK2 is effected for the insulating material IM.
• the support frame of the individual, elongated adhesive threads arranged in a swirling manner is advantageously stable in such a way that the compressive forces which act on the covering area AB3 of the covering means AM3 as a result of the expanding insulating material during the foaming process can be largely absorbed.
• the covering means AM3 largely spans the opening OF on the insulating material side as a rectilinear strip element. As viewed perpendicularly to the entrance opening of the opening OF3, it has a substantially circular contour (see FIG. 3B), which also remains substantially planar during the pressing or pressing of the swelling insulating material.
• the covering means AM3 functions as a sealing member with respect to the insulating material IM. Contamination of the inner wall IW3 of the inner container GT2 by foam material is thereby largely avoided in a reliable manner.
• the invention thus structured covering means of a plurality of contiguous, elongated adhesive filaments both a Abdichtfunktion different cover areas such as openings, in particular openings, marginal gaps, Füger Sn, cracks or other leaks in the boundary walls of the hollow body of the inner container against leakage of insulation material , as well as a ventilation or ventilation function for the aimed escape, ie discharge of air and / or propellant during the foaming process or expansion process of the insulating material. Since this covering means can be produced in particular by spraying or flocculation from a nozzle device such as DV, this type of production of the covering means for an automated production line for the production of refrigerators is suitable.
• the gas-permeable structure for the respective cover can be produced very quickly and save material in an advantageous manner.
• the covering means with the spray technique can advantageously also attach to hard-to-reach places of the respective inner container for sealing of different types of openings or openings and / or for fixing of attachments and / or built-in parts.
• the gas-permeable structure of the respective covering means allows the escape of displaced air and / or propellant gas, which serves to foam the insulating material, from the cavity of the hollow body into the open.
• FIG. 4 shows a perspective view of another, alternatively shaped body of the refrigerator KG during its assembly. It is composed of the one-piece deep-drawn from a plastic plate such as polystyrene inner container GT2 of Figures 3A, 3B and assembled from not shown plates outer skin or casing.
• the panels of the outer skin are fastened to the front of the inner container by profile elements SL1 and SL4 assembled to form a support frame.
• the inner container GT2 is composed of two longitudinal side elements SW3, SW4 and a ceiling shell SW1 and a bottom shell SW2 to a cuboidal geometric shape so that it has a single, viewed in longitudinal and cross-section rectangular-shaped interior.
• Both longitudinal side walls SW3, SW4 of the inner container GT2 are each provided with a plurality of apertures or openings OF8. These are used to record backing parts HT2.
• These backing parts HT2 serve, for example, to mount refrigerated goods carriers or telescopic extensions, not shown in the interior of the inner container GT2.
• a large-sized opening DU on an upper, rear edge of the ceiling shell SW1 of the inner container GT2 and a backing member HT1 to be placed thereon are used for anchoring an attachment such as an attachment. an interior lighting or a fan / light combination in the inner tank GT2.
• an attachment such as an attachment. an interior lighting or a fan / light combination in the inner tank GT2.
• a covering region AB4 results, which circumscribes the outer contour of the backing part HT1 along an edge zone.
• a seal by means of a covering means for sealing a joint gap between the cover shell SW1 and resting backing part HT1 around the outer contour of the backing part HT1 is desired.
• cover regions AB41, AB42 which are arranged at a distance from one another along an imaginary line, are provided on the upper ceiling shell SW1, which predetermine locations for fastening a control or supply cable LE.
• This cable LE connects in the fully assembled cooling unit or refrigeration unit KG, the backing part HT1 with an electronic control assembly, which is mounted behind a mounted above the top profile element SL1, not shown here control panel.
• FIG. 8 shows such a covering area around an opening 0F8 on the basis of a schematic longitudinal section through the side wall SW4 in the region of the opening 0F8.
• the backing part HT2 is enclosed as a substantially circular-cylindrical bushing part from the hollow-body side, ie from the outside, into the approximately circular-cylindrical breakthrough OF8.
• FIG. 7 shows a partial section of the inner container GT2 of FIG. 4 and of the backing part HT1 preassembled thereon.
• the cable LE extending from the backing part HT1 to the control module is fastened to two outer fixing locations AB41, AB42 by means of a cover means AM41, AM42 applied to the outer wall of the inner container GT2.
• the respective covering means AM41, AM42 covers the cable LE transversely to its longitudinal extension and fixes it on both sides of its longitudinal extent to the insulating foam-side outer wall of the inner container GT2 on a contact strip.
• the respective covering means with a strip-shaped support contour is first applied to the insulation material-side outer wall of the inner container GT2 at the desired fixing points AB11, AB12, and then only the cable is pressed onto the still heated, sticky covering means so that it sticks there each time.
• the cable LE can be sufficiently pre-fixed with respect to its location for subsequent operations or assembly steps, especially for a subsequent assembly step, during which the inner container GT2 and the plates of the outer skin or shuttering limited hollow body HK2 is foamed with insulation material.
• the covering means AM4 is provided in the outer edge zone AB4 about the outer contour of the backing part HT1. It serves to seal any edge gap between the outer wall of the inner container GT2 and the backing part HT1. This can be prevented in a reliable manner that insulation material when filling the hollow body HK2 can penetrate into the interior of the inner container GT2.
• FIG. 12 shows a schematic cross-sectional illustration of the rear wall RW of the inner container GT2 of FIG. 4 in a section perpendicular to the longitudinal extent of the rear wall RW.
• an evaporator element VED is placed flat.
• the evaporator element VED has an inner contour adapted to the curvature of the rear wall RW.
• a covering means such as, for example, is provided continuously or at different, spaced apart local locations.
• FIG. 10 illustrates, in a schematic plan view, the slot-like openings OF101, OF102, OF103 in a side wall of the inner container GT1 of FIG. 1, which have been covered by means of cover means AM101, AM102, AM103 produced according to the invention.
• these covering means AM101, AM102, AM103 form a barrier for the insulating material IM when it is filled in the hollow body HK1 (see FIG. 2) and foamed there. Through this barrier, the insulating material IM can not penetrate through the openings OF101, OF102, OF103 in the interior of the inner container GT1 and pollute the inner walls there.
• the gas-permeable structure of the respective covering means allows the foaming process displaced air in the hollow body HK1 and / or blowing gas used for the foaming duct from the hollow body HK1 through the openings OF101, OF102, OF103 can escape into the interior of the inner container GT1.
• an insulating jacket can be produced largely flawlessly around the inner container GT1.
• the formation of undesired voids, ie air inclusions, or other impairments in the structure of the insulating material is largely avoided. In this way, it is largely ensured that the insulation material IM present in the hollow body HK1 forms a properly formed thermal insulation layer.
• FIG. 11 shows a schematic section through an edge of the inner container GT2 of FIG. 4 and one of the profile elements SL1 and SL4 fastened thereto.
• the profile element is essentially an L-shaped profile with two mutually orthogonal legs SE1, SE2, wherein the extending on the front of the body leg SE1 hairpin-shaped bent back and extended by an elastic spring FE.
• the leg SE1 and the spring FE define a groove in which the edge of the inner container GT2 is clamped.
• a cover AM1 1 with the inventively constructed structure for sealing a possible gap applied.
• the cover means AM81 covers a portion of the hairpin-shaped bent leg SE1 and an adjoining contact zone on the outer wall of the inner container GT2. Then, a hitherto used hot-melt adhesive layer HKS, which has hitherto been applied in a peripheral region of the spring FE and an adjacent surface strip of the inner wall of the inner container as a foam-tight connection, or a sealing foil clamped therebetween, may be omitted.
• This previously used hot-melt adhesive layer or sealing film is indicated in phantom in FIG. 11.
• FIG. 9 shows, for a further variant of the refrigeration device KG, a cross-sectional representation of the inner container GT2 of FIG. 4 with further appropriate, modified preparation measures, before the outer hollow body HK2 thereof is insulated. material IM has been filled and this has hardened.
• the following assembly steps are carried out:
• openings or openings of the inner container GT2 are each covered from outside by means of a cover means produced according to the invention.
• the opening OF91 in the bottom shell SW2 of the inner container GT2 is covered with the covering agent AM91 and thus closed in a foam-tight manner.
• installation parts and / or add-on parts are fitted in further openings or passed through them.
• a passage opening OF92 in the right side wall SW4 of the inner container GT2 a line or a wiring harness LE9 introduced from the outside into the interior of the inner container GT2.
• a light control unit LID is pre-assembled.
• a backing part or a bushing can expediently be fitted in the opening OF92 to increase the carrying capacity.
• a cover means AM92 which is composed of individual elongated adhesive threads having the structure according to the invention.
• a cover means AM92 which is composed of individual elongated adhesive threads having the structure according to the invention.
• a reliable foam-tight seal between supplied line LE9 and the inner edge of the opening OF92 can be provided.
• other areas on the inner container GT2 can be protected against undesired entry of insulation material IM in its interior.
• the power supply device SVE to which the cable or the line LE9 is connected, coated with a structured covering AM97 according to the invention at insulating material foam critical points with a covering AM97.
• the power supply device SVE is provided here in the embodiment of Figure 9 at the bottom of the inner container GT2.
• an evaporator VED is further provided in the interior of the inner container GT2 in the ceiling area.
• its coolant pipe RO is guided through an opening OF93 in the ceiling shell SW1.
• This opening OF93 is likewise closed by means of an AM93 covering agent produced according to the invention.
• the covering means according to the invention can also be used to secure the coolant tube RO outside the casing part VT2.
• the masking agent AM96 is applied according to the method according to the invention at a local location.
• openings in the outer wall of the shuttering part VT2 can also be made foam-tight by means of the covering means according to the invention.
• a leak OF95 is covered and sealed with the covering means AM95.
• even microscopically small gaps between attachments and inner edges of openings into which they are inserted, can be largely hermetically sealed by means of the covering means according to the invention against foam leakage.
• an attachment AT94 is partially inserted into the hollow body HK2 through an opening OF94. It is provided with the aid of an inventively produced and structured covering means AM94 in the region of a passage zone between the inner edge of the opening OF94 and the outer boundary of the attachment AT91.
• the masking agent produced and structured according to the invention serves, on the one hand, in particular a seal against the escape of insulating material from the hollow body of a housing part, such as. e.g. reach the inner container of a refrigerator.
• a ventilation or ventilation means due to its gas-permeable structure.
• it can also serve as a fixative for inputs and attachments that are to be secured or fixed to any housing part of the refrigerator.
• the covering means according to the invention is characterized in that it forms a barrier or barrier for the liquid introduced precursor of the insulating material and its foam material during foaming.
• the covering means produced and formed according to the invention holds the insulating material firmly during filling and foaming, so that it can not escape through openings or openings in the hollow body for the inner container or the door. Due to its specific structure, it provides sufficient support for the insulating material in its filling process in the liquid state and its foaming and at the same time remains sufficiently permeable to gas.
• the gas-permeable structure of the covering means according to the invention enables proper ventilation or venting of displaced air and / or propellant gas, as is required, for example, when filling a hollow body with insulating material.
• the contiguous, filamentary adhesive-individual elements of the respective Ab- Covering agent achievable an adhesive effect, so that mounting and / or mounting parts can be attached to a plurality of housing parts of the refrigerator.
• the covering means according to the invention can be used in a variety of assembly tasks in the production of refrigeration appliances.
• the covering means produced and formed according to the invention can be applied more precisely to the respective covering area as an adhesive tape piece.
• the sealing effect and / or fixing effect of the covering agent according to the invention can thereby be achieved with lower material use than with adhesive tapes or with the use of closed adhesive films or adhesive layers, in particular closed "hot-melt jobs.” This leads to an improved efficiency of the production process apply the inventively formed covering on the respective covering areas much faster than adhesive tapes or a closed adhesive film, which favors an accelerated, automated production process.
• FIG. 13 shows a schematic sequence of the automated production process for producing the body of a cooling device with an inner container GT2 according to FIGS. 3A, 3B, 4.
• various cultivation and / or application methods are applied to the inner container GT2 in a fusing station FV with the aid of a hot-melt adhesive coating device HKV. or built-in parts AT prefixed by application of closed adhesive layers.
• any openings OF in the walls of the inner container are sealed impermeable to insulating material in accordance with the invention by means of a covering means AM applied in a subsequent sealing station DIV.
• the at least one nozzle device DV is provided in the sealing station DIV, which ejects elongated adhesive individual threads KF1 with KFn, preferably swirled.
• the distance of the nozzle device DV from the respectively desired cover region of the housing part and other nozzle parameters of the nozzle device DV are expediently selected such that the sprayed-out adhesive individual filaments partially or completely harden on their trajectory to the respectively desired covering region before the local impact. Possibly. It may be appropriate to hang the nozzle device DV such that for them a pendulum motion is possible. This is indicated in FIG. 1 or in FIG. 13 by a double arrow PE. As a result, the focusing range of the nozzle device DV can be expanded.
• the nozzle device DV is mounted on a robot arm. so that any points around the inner container GT2 automatically or independently can be approached without manual intervention to apply there appropriate cover means on inputs and / or attachments and / or openings. Possibly. It may also be appropriate to form the nozzle device as a spray nozzle. Then, the respective cover can be sprayed by an operator at a desired location by hand. This is faster and more material-saving than the conventional sticking of adhesive tapes or the application of closed adhesive layers.
• fixation FV can also be omitted. Then, in an advantageous manner alone with the nozzle device DV already a fixation of inputs and / or attachments AT performed.
• the inner container GT2 with the attached covering means AM is surrounded on the outside with a casing VT2 in a subsequent station VSV via one or more openings and the position-secured installation and / or attachment parts AT.
• the insulating material IM is filled in the liquid state in the hollow body HK2 of the inner container GT2, which is formed between the outer walls of the inner container GT2 and the inner walls of the shuttering part VT2.
• the insulating material IM is foamed under compressed air and / or under the action of propellant gas.
• the insulating material IM hardens and solidifies.
• the body KO of the cooling device produced in this way is then fed to further assembly stations for the production of the cooling device. These have been omitted in FIG.
• the spraying of individual elongate adhesive threads onto a desired covering area by means of at least one spraying device, in particular a nozzle device such that a covering means forms with a gas-permeable structure which is at the same time sufficiently leakproof for the insulating material, is characterized in particular by a very low material consumption compared with the previous ones Working or mounting method in which a closed film or tape is applied as a seal.
• the Aussprühtechnik allows by means of a Aussprühvoriques, in particular nozzle device, a high degree of automation such as by a six-axis robot.
• the covering means can also be produced, in particular, with a hand device, in particular a spray gun.
• the at least one spray device preferably nozzle device
• the at least one spray device is arranged at a predetermined distance or at a predetermined distance from the respectively desired cover region of the housing part.
• the nozzle device or, more generally, the Aussprühwerkmaschine is not contacted with the actually to be sprayed workpiece, i. does not come together with it, but it is possible by spraying a variety of adhesive threads from the spray-out, the adhesive threads flying through the air, so to speak contactless or contactless and to strike a desired coverage area of the housing part focused kussiert.
• a gas-permeable, but isolationsmaterial- opaque, ie-blocking cover structure is produced by the spray distance and / or at least one other spray, in particular nozzle parameters such as temperature of the processed adhesive, in particular "hot-melts", the spray, in particular nozzle device is advantageously selected such that sprayed out of the Aussprühvorraum, in particular the nozzle head of the nozzle device, individual macro-adhesive threads are ejected in particular vortex, this at least partially in flight before hitting the respective desired coverage area be hardened and arrange themselves at the destination as a loose structure by means of appendages and diffusion bonds together as a coherent structure.
• this gas-permeable structure preferably has a sparse or spider-web-like, in particular fleece-like or netlike, nature in the first approximation.
• their arrangement or tangle of macro-adhesive threads has a kind of microporous sponge construction or micro-fleece construction.
• This has the property of permitting air and / or propellant gas, but to oppose foamed insulation material, in particular polyurethane foam, a barrier. It thus forms a barrier to the insulating material when filling a liquid precursor material and its foaming process.
• it has a micro-holey support framework composition between the individual adhesive threads, which does not allow the macromolecules of the insulation material to pass through but allows air and / or gas molecules to pass through.
• the masking agent produced and structured in accordance with the invention enables the escape of air due to its gas permeable structure and / or propellant gas from the space occupied by the insulation material, thereby largely avoiding the formation of voids in the insulation material or other negative effects of the material properties of the hardened insulation material, which could impair the insulation effect.
• a covering means with a gas-permeable structure of a plurality of contiguous filamentary adhesive threads is applied to a respective opening to be sealed in at least one wall of the hollow body of the door.

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• Engineering & Computer Science (AREA)
• Chemical & Material Sciences (AREA)
• Combustion & Propulsion (AREA)
• Physics & Mathematics (AREA)
• Mechanical Engineering (AREA)
• Thermal Sciences (AREA)
• General Engineering & Computer Science (AREA)
• Refrigerator Housings (AREA)
• Thermal Insulation (AREA)

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• 2008
  • 2008-02-19 DE DE200810009786 patent/DE102008009786A1/de not_active Withdrawn
• 2009
  • 2009-02-11 WO PCT/EP2009/051562 patent/WO2009103639A1/de active Application Filing
  • 2009-02-11 RU RU2010135807/13A patent/RU2488050C2/ru not_active IP Right Cessation
  • 2009-02-11 CN CN200980105770.XA patent/CN101952677B/zh active Active
  • 2009-02-11 EP EP09713646A patent/EP2242971A1/de not_active Withdrawn
  • 2009-02-19 EP EP09712425A patent/EP2242970A1/de not_active Withdrawn
  • 2009-02-19 WO PCT/EP2009/051998 patent/WO2009103774A1/de active Application Filing

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