EP2242970A1 - Kältegerät, verfahren sowie vorrichtung zu dessen herstellung - Google Patents
Kältegerät, verfahren sowie vorrichtung zu dessen herstellungInfo
- Publication number
- EP2242970A1 EP2242970A1 EP09712425A EP09712425A EP2242970A1 EP 2242970 A1 EP2242970 A1 EP 2242970A1 EP 09712425 A EP09712425 A EP 09712425A EP 09712425 A EP09712425 A EP 09712425A EP 2242970 A1 EP2242970 A1 EP 2242970A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- adhesive
- housing part
- hollow body
- insulating material
- covering
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- 238000005057 refrigeration Methods 0.000 title claims abstract description 26
- 238000000034 method Methods 0.000 title claims description 41
- 238000004519 manufacturing process Methods 0.000 title claims description 32
- 239000000853 adhesive Substances 0.000 claims abstract description 154
- 230000001070 adhesive effect Effects 0.000 claims description 149
- 239000011810 insulating material Substances 0.000 claims description 97
- 239000012774 insulation material Substances 0.000 claims description 43
- 238000007789 sealing Methods 0.000 claims description 31
- 238000005187 foaming Methods 0.000 claims description 26
- 239000003380 propellant Substances 0.000 claims description 25
- 239000007921 spray Substances 0.000 claims description 25
- 239000006260 foam Substances 0.000 claims description 20
- 238000005507 spraying Methods 0.000 claims description 19
- 238000009416 shuttering Methods 0.000 claims description 17
- 230000004888 barrier function Effects 0.000 claims description 13
- 238000009434 installation Methods 0.000 claims description 9
- 239000007788 liquid Substances 0.000 claims description 9
- 238000013022 venting Methods 0.000 claims description 7
- 239000004831 Hot glue Substances 0.000 claims description 6
- 230000033001 locomotion Effects 0.000 claims description 5
- 230000000873 masking effect Effects 0.000 claims description 5
- 229920005830 Polyurethane Foam Polymers 0.000 claims description 4
- 229920001187 thermosetting polymer Polymers 0.000 claims description 4
- 239000002243 precursor Substances 0.000 claims description 3
- 239000000835 fiber Substances 0.000 description 62
- 239000000463 material Substances 0.000 description 28
- 239000002390 adhesive tape Substances 0.000 description 14
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- 230000015572 biosynthetic process Effects 0.000 description 6
- 238000009413 insulation Methods 0.000 description 6
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- 239000004834 spray adhesive Substances 0.000 description 6
- 239000012790 adhesive layer Substances 0.000 description 5
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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.
- the decomposition of the respective hollow body with an insulating liquid material in its precursor, which expands by propellant gas, requires that the hollow body be as completely as possible, ie hermetically sealed, before the liquid precursor of the insulating material is injected. 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. As a result, on the one hand, a desired geometry shape and / or material consistency for the insulating material body could not be adhered to at any point.
- 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.
- 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 solidifying the
- Insulation material has used and has formed a cured insulation material body. This provisional fixation of mounted and / or built-in parts by means of
- Adhesive tapes is unsatisfactory in practice, since the adhesive tapes in the production usually can be attached only by hand.
- 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
- Covering a cover means is applied with a gas-permeable structure, which is formed from a plurality of continuous, thread-like individual elements of an adhesive.
- the respective covering means with its gas-permeable structure made of a plurality of contiguous adhesive threads or fibers enables improved production of refrigeration appliances. 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 particular in the form of sprayed adhesive fibers, are advantageously covered in such a way that when filling the hollow body with foaming by means of propellant gas 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 outdoors largely unhindered can escape, however, on the other hand at the same time the insulation material is largely prevented from entering and / or passing through the respective opening.
- the covering means is advantageously also designed to be stable and dense enough to retain the insulating material during filling and / or foaming until it is cured, and a kind of barrier or barrier against leakage of the insulating 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 covering means is advantageously composed of individual, preferably non-directional, elongated adhesive threads or adhesive fibers which are contiguous and preferably form a three-dimensional structure that is too finely porous for an insulating material passage but continuous for gaseous media.
- the respective covering means is advantageously composed of individual, preferably non-directional, elongated adhesive threads or adhesive fibers which are contiguous and preferably form a three-dimensional structure that is too finely porous for an insulating material passage but continuous for gaseous media.
- the inventively designed covering means it is also possible in an advantageous manner, at least provisionally to fix mounting and / or mounting parts on at least one housing part of the refrigeration device for further assembly steps, ie to assure position.
- 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 following advantageous embodiments of the invention can be listed individually or in combination in practice:
- 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 may be formed on the respective housing part of the refrigerating appliance, in particular through an opening in at least one wall of the hollow body of the housing part.
- the gap width between the thread-shaped adhesive-individual elements of the respective covering means is preferably selected such that only for enclosed in the hollow body air and / or propellant gas from the insulating material during its expansion an outlet through the opening for venting the hollow body is provided.
- 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 refrigeration device.
- 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 insulating material side and / or Isolationsmaterialabgewandt season and has a sealing around the opening, which is spanned by the invention structured Abdeckstoff.
- the attachment may be in particular e.g. Also be formed by a pipe, a pipe, a wiring harness, an evaporator, a profile element, a holder for a housed in the housing part inner component or other mounting and / or installation component of the refrigerator.
- 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 cover region, and this partially or completely cured, filament-shaped individual elements over the respective covering 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.
- the covering agent according to the invention can be applied to the respective covering area much faster than adhesive tapes or closed adhesive films, which favors an accelerated automated production process.
- 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 for the subsequent application of insulating material to a plurality of covering areas with covering means according to an advantageous embodiment variant of the method according to the invention;
- Figure 3A is a schematic longitudinal sectional view of a side wall of a second
- Covering means is spanned 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 picture of the macrostructure of the
- FIG. 7 shows a schematic representation of the assembly for an attachment of the inner container of FIG. 4 by means of one or more covering means produced according to the invention
- Figure 8 shows a schematic representation of the mounting of a backing part in one
- 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 foam-up insulating material on the outer walls of the
- FIG. 10 is 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 structure formed according to the invention;
- 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
- FIG. 14 shows, in a schematic cross-sectional representation, the yarn path of an adhesive thread of the multiplicity of adhesive filaments of a structured covering means designed according to the invention in the region of a substantially vertical fold between an attachment and a housing part of the refrigeration device of FIG. 1 without being applied
- Insulation material layer and in the state with applied insulation material layer,
- Fig. 15 shows a schematic cross-sectional view of the course of a
- 16 is a schematic cross-sectional view of the passage opening in the
- 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 here in the embodiment for mounting with respect to his Longitudinal direction aligned horizontally.
- 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 mounted 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 serve the later support 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 can preferably be partially or completely introduced before the application of the shuttering part VT1. 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 indicated 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-section geometry such that elongated adhesive threads or adhesive fibers KF 1 are swirled or flocculated with KFn at the nozzle head of the nozzle device DV.
- the adhesive KM is preferably chosen to be a hot-melt or other heat-meltable and heat-curable adhesive
- the nozzle parameters such as the amount of spray pressure, melt temperature for the adhesive, nozzle channel area, etc.
- G 1 covers the cover area 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 completely cured long-stretched adhesive threads KF1 with KFn are deposited on each other in the desired covering area, such as AB13 side by side and form a thin, three-dimensional framework.
- these macro-sutures form a three-dimensional, non-directional macro-weft characterized by the fact that its specific structure is too small for insulator passage, but permeable to trapped 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 or fibers is in particular due to the fact that the individual adhesive threads or adhesive fibers partially or entirely fuse together at their common support points, since their adhesive material is not completely or sufficiently cooled and solidified at the respective point of impact.
- adhesion of the individual adhesive threads or fibers can be brought about by adhesion 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 also interlock with one another due to their surface structure and / or shape.
- the individual macroadhesive threads which have been sprayed out of the nozzle device DV and swirled on their trajectory to the respective cover region hang as a loose, approximately fleece-like structure due to various attachment forces and diffusion joints together.
- they form a net-like support 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.
- 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 masking agent thus formed from individual, elongated macro-adhesive filaments or adhesive fibers, e.g. AT 13TH. Since the individual adhesive threads are swirled on exiting the nozzle device DV, they store themselves largely irregularly distributed at the respective cover region, i. disorderly or irregularly next to each other and on top of each other. In particular, a gas-porous structure or a formation of a tangle of adhesive threads or adhesive fibers is formed. Their thread or fiber 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 is the Faden upon.
- Fiber length FL at least equal to the diameter of this circular cross-sectional opening selected. In particular, it may be appropriate to set a 10% -50% larger thread length than the largest aperture width to be closed in order to achieve sufficient security for covering the respective aperture through the individual adhesive threads and to prevent the adhesive threads from falling through the aperture opening to a great extent.
- 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 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 chosen such that such gaps exist between the individual, elongated macro-adhesive filaments remain that the covering thus prepared is gas-permeable.
- the hollow body such as HK1 of Figure 2, which is formed between the outer walls of the inner container GT1 and the shuttering part VT1, filled with liquid insulation material IM under compressed air and sets the foaming process of the insulating material under this compressed air and / or additionally or independently thereof undermaschinegasbeetzschung a, so air is in the interior of the hollow body HK1 displaced, which can now escape through the gas-permeable structure of the respective covering means as here AB13 for example in the interior of the underlying opening such as 0F13 and thus in the inner container GT1.
- the propellant gas for the foaming process of the insulating material IM can be led out or vented from the hollow body HK1 due to the gas-permeable structure of the respective covering means.
- the layer thickness HOE of the gas-permeable structure is preferably between 0.1 and 0.5 mm
- These macro-individual threads or fibers of adhesive form simplified preferably contemplates a type of three-dimensional, non-directional "macro-sliver" whose structure of adhesive filaments is too small for 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 associated with an outer casing part VT2 corresponding to the casing part VT1 in the two-part inner container GT1 of Figuri or Figure 2.
- 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.
- the side wall SW3 is above the entrance of the passage opening OF3 and in an annular or annular, ie generally expressed annular edge zone or surrounding area AF around the circular input cross-sectional area of the passage opening OF3 by means of the nozzle device DV of Figure 1 a Covering means AM3 applied 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 area AB3 of the covering means in this case 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 adhesion forces of the adhesive material of the individual adhesive threads, micro-toothings between the adhesive threads and the material of the side wall SW3, fusion joints of even hoter adhesive threads with the material the sidewall 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 with a "mesh size" LU between 1/1000 mm and 1/100 mm up.
- the gas-permeable structure of the covering means AM3 thus enables a venting of the hollow body when introducing 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. It keeps the insulating material both in the liquid precursor state as well as in the foaming state until the final setting or curing so firmly that the insulation material is prevented from entering the passage opening OF3 and / or passage into the interior of the inner container GT2.
- the covering means AM3 spans the opening OF3 with its gas-permeable structure in such a way that a barrier or a barrier is provided for the insulation material IM. Block against its exit from the hollow body HK2 is effected.
- 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.
- a compressive force F1 of the insulating material IM acts perpendicular to the roughly plane-like framework structure of the cover means AM3, then this counteracts an approximately equal counterforce F2 due to its material rigidity.
- the covering means AM3 largely spans the opening OF on the insulating material side as a rectilinear strip element.
- 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 structured covering of a plurality of contiguous, elongated adhesive filaments both a Abdichtfunktion of various coverage 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 targeted escape, ie discharge of air and / or propellant gas in 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 very quickly and material-saving in an advantageous manner produce.
- 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.
- Figure 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 made up of two longitudinal side elements SW3, SW4 and a ceiling shell SW1 and a bottom shell SW2 to form a cuboidal geometric shape, so that it has a single, viewed in longitudinal and cross-section rectangular 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.
- two covering areas AB41, AB42 arranged on 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.
- annular openings are provided around the apertures or openings OF8 in the longitudinal side walls SW3, SW4 to seal the contact zones between backing parts HT2 and the inner container GT2.
- FIG. 8 shows such a covering area around an opening OF8 on the basis of a schematic longitudinal section through the side wall SW4 in the region of the opening OF8.
- the backing part HT2 is enclosed as a substantially circular-cylindrical bushing part of the hollow body side, ie from the outside into the approximately circular-cylindrical opening OF8. It sits around the approximately circular Cross-sectional area of the opening 0F8 with an annular circumferential flange FLA on the insulating foam side inside of the side wall SW4 of the inner container GT2, ie in the cavity whose outside arranged hollow body.
- the backing part HT2 On the side of the side wall SW4 facing away from the hollow body, the backing part HT2 is latched with a radially protruding annular latching hook RH on the inside of the side wall SW4.
- a masking means AM81 is applied by means of the nozzle device DV of Figure 1.
- 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 cover 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 AB1 1, AB12, and then only the cable to the still heated, sticky cover is pressed so that it sticks there each.
- the cable LE can be sufficiently prefixed with regard to its local position for subsequent operations or assembly steps, in particular for a subsequent assembly step, during which the hollow body HK2 bounded by the inner container GT2 and the plates of the outer skin or shuttering is foamed with insulation material.
- FIG. 12 shows a schematic cross-sectional representation 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 e.g. AM121, AM122 with the inventively designed framework structure applied to pre-fix the flat evaporator element VED on the rear wall RW until it is finally finally face-facing in the cured insulating material IM.
- 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 air displaced in the hollow body HK1 by the foaming process and / or propellant gas used for the foaming passage to escape from the hollow body HK1 through the openings OF101, OF102, OF103 into the interior of the inner container GT1 can.
- an insulating jacket can be produced largely flawlessly around the inner container GT1.
- the formation of unwanted voids, ie air pockets, 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.
- Figure 1 1 shows a schematic section through an edge of the inner container GT2 of Figure 4 and one of the attached profile elements SL1 with SL4.
- 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 covering means AM11 with the structure designed according to the invention for sealing a possible gap is applied in the upending or appending region between the leg SE1 and the outer wall of the inner container GT2. As a result, leakage of insulating material IM into the interior of the inner container GT2 is prevented reliably.
- 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.
- FIG. 9 shows, for a further variant of the refrigeration device KG, a cross-sectional view of the inner container GT2 of FIG. 4 with further appropriate, modified preparation measures before its outer hollow body HK2 has been filled with insulating material IM and this has hardened.
- the following assembly steps are carried out: First, remaining 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 0F91 in the base shell SW2 of the inner container GT2 is covered with the AM91 covering agent and thus closed in a foam-tight manner.
- installation and / or attachments are fitted in other openings or passed through them.
- 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.
- the edge zone between the feed line LE9, a possibly introduced backing part and an annular surrounding zone on the side wall of the inner container GT2 around this opening OF92 is expediently covered by means of a cover means AM92, which is composed of individual elongated adhesive threads having the structure according to the invention.
- 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. Therein, 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 position-secure the coolant tube RO outside the shuttering part VT2.
- the masking agent AM96 is applied according to the method according to the invention at a local location. It serves exclusively to fix the coolant pipe RO for provisional or provisional securing of the position until the insulation material IM is introduced into the hollow body HK2 and is tied off there Has.
- 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. Furthermore, 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 inventively prepared and structured covering means serves for a purpose, in particular a seal against insulation material outlet from the hollow body of a housing part 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 fixing means for inputs and attachments, which are to be fixed to position on some housing part of the refrigeration device or.
- 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 keeps the insulating material when 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 cover means according to the invention allows proper ventilation or venting of displaced air and / or propellant gas, as is required for example when filling a hollow body with insulation material.
- the contiguous thread-like adhesives Individual elements of the respective covering means an adhesive effect achievable, so that mounting and / or built-in parts can be attached to a plurality of housing parts of the refrigerator.
- the cover according to the invention can be used in a variety of assembly tasks in the production process of refrigerators.
- 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 usage 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 refrigerating appliance 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 fixing station FV using a hot-melt adhesive coating apparatus 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 free space distance of the nozzle device DV from the respective desired cover area of the housing part and other nozzle parameters of the nozzle device DV are expediently selected such that the sprayed adhesive individual filaments partially or completely harden on their trajectory through the air to the respective desired coverage area 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 arbitrary locations around the inner container GT2 can be approached automatically or autonomously without manual intervention in order to apply corresponding covering means to mounting parts 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 allowed by means of a Aussprühvoriques, in particular nozzle device, a high degree of automation such as by a six-axis robot. With him advantageously high speeds, in particular of about 0.1 m / s, for spraying the adhesive threads and generating the respective cover means on the desired coverage area possible.
- the covering means can also be produced, in particular, with a hand device, in particular a spray gun
- a hand device in particular a spray gun
- the at least one ejection device preferably nozzle device
- the at least one ejection device is arranged at a predetermined distance or at a predetermined distance from the respective 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 this, but it is possible by spraying a variety of adhesive threads from the Aussprühwerkmaschine, the adhesive filaments or fibers fly on trajectories through the air, so to speak without contact or contactless and to strike a desired coverage of the housing part focused.
- different sections or sections, ie partial surfaces of the respectively desired covering region with the structure of adhesive threads can be so successively or stepwise cover that finally on the total area of the respective area to be covered a plurality of adhesive threads with the specific, gas-permeable structure is seated.
- 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 Aussprühvorraum, in particular Nozzle device in such an advantageous manner is selected that from the Aussprühvortechnisch, in particular the nozzle head of the nozzle device, sprayed individual macro-Klebeschfäden or fibers are ejected in particular vortex, these are at least partially cured in flight through the air before hitting the respective desired coverage area and on Arrange the target location as a loose entity based on attachment forces and diffusion connections as a coherent entity.
- 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 or fibers has a kind of microporous sponge structure 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-porous 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 according to the invention allows, due to its gas-permeable structure, the escape of air and / or or propellant gas from the space occupied by the insulation material, which largely avoids 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.
- installation and / or add-on parts for further assembly steps of a cover means structured in accordance with the invention can be fixed by means of the same spraying technique.
- FIG. 14 shows, in a schematic cross-sectional representation on the rear wall of the inner container GT1 of FIG. 1, an attachment AT51 which has a substantially rectangular edge break ERK to the contact area of the inner container GT1 which is essentially planar in the exemplary embodiment.
- a single adhesive thread KF61 is drawn in a dash-dotted line from the upper edge of the attachment AT51 obliquely downwards to the contact area of the inner container GT1, essentially in a straight line. Due to the polygonal, in particular rectangular Abdichtkontur between the attachment AT51 and the inner container GT1, the sprayed adhesive yarn KF61 has too large a free clamping length between the upper corner edge of the attachment AT51 and its lower Anklebetician on the rear wall of the inner container GT1. If insulation material IM were then applied to the inner container GT1 on the back wall side, pressure would be exerted on the sprayed adhesive threads, eg KF61, during the foaming process or its expansion, and exposed to thermal heat which occurs during the foaming process.
- the angular Abdichtkontur between the attachment AT51 and the inner container GT1 one or more flattened edge contours. This is illustrated in the schematic cross-sectional view of FIG. 15.
- the attachment AT51 has a chamfer SKN 1 in the transition region to the planar or planar contact surface on the rear wall of the inner container GT1.
- the outer wall of the attachment AT51 thus extends with a flattened edge contour toward the rear wall of the substantially horizontal attachment region of the inner container GT1. Only in a lower Aufkant Scheme the outer contour of the attachment AT51 still runs with a vertical, trained wall section. Due to the flattening of the outer wall contour SKN 1 in the form of an oblique ramp in the direction of the inner container GT1 to the free clamping length of a sprayed adhesive thread or a sprayed adhesive fiber against the constellation of Fig. 14 is significantly reduced. This is illustrated in FIG. 15 by means of a single adhesive fiber KF71. This is starting from the upper edge of the attachment AT51 to the lower fold AKA the outer wall of the attachment AT51 on the chamfer SKN1 contacting.
- FIG. 15 shows in dashed lines the profile of the adhesive fiber PKF71, which adopts it during the application of adhesive material IM, in particular the accompanying heat development and pressure development. It only slightly towards the bottom corner of the bottom Folded AKA closed.
- the covering area between the attachment AT51 and the inner container GT1 has a flattened edge contour SKN1 largely avoids a critical free stretching length for the adhesive fibers being exceeded, which could otherwise lead to tearing or other damage to the sprayed-on fiber structure.
- the finished adhesive fiber sealing structure thus becomes more uniform and denser. Under the action of the insulation material foam, in particular the heat developed as well as contact pressure, the adhesive fibers are deformed far less than in the case of the rectangular sealing contour of FIG. 14. As a result, the desired sealing and holding function of the sprayed structure of adhesive fibers can be reliably ensured.
- the gap SPA1 between the attachment AT51 and the housing part such as GT1 can be largely foam-tight covered and / or a reliable holding function, in particular fixation of the attachment to the housing part can be ensured.
- a second attachment AT52 is additionally shown in FIG. 15, which starting from its upper edge has a first bevel SKN3 and a second, even more flattened, edge contour SKN2 directly adjacent to the contact surface of the inner container GT1.
- the lower flattened edge SKN2 of the second attachment ATS2 thus runs largely flat in the support plane of the inner container GT1.
- sprayed-on adhesive fibers are largely saturated, ie, contacting the two bevels SKN2, SKN3 of the second attachment ATS2 and resting on the inner container GT1 and covering the marginal gap SPA2 between the attachment AT52 and the inner container GT1.
- FIG. 15 A second attachment AT52 is additionally shown in FIG. 15, which starting from its upper edge has a first bevel SKN3 and a second, even more flattened, edge contour SKN2 directly adjacent to the contact surface of the inner container GT1.
- the lower flattened edge SKN2 of the second attachment ATS2 thus runs largely flat in the support plane of the inner container
- such a close-fitting adhesive fiber is drawn along the two flattened edge contours SKN3, SKN2 and the contact surface of the inner container GT1 and designated KF72.
- This adhesive fiber KF72 lies almost completely on its entire length at the flattened edge contours of the attachment ATS2 and the inner container GT1.
- a free span length of the adhesive fiber KF72 over a remaining gap or cavity of the contact zone between the attachment AT52 and the inner container GT1 is thus largely avoided by the flattened edge contours.
- a perfect sealing and / or holding function of the sprayed adhesive fibers in the gap area SPA2, ie contact area or Aufsetz Scheme between the attachment ATS2 and its contact surface on the inner container GT1 produced.
- FIG. 16 shows, in a schematic sectional illustration, the covering area AB3 about the passage opening of FIG. 3a in the wall SW3 of the inner container GT2.
- the passage opening 0F3 * has, viewed from the side of the inner container GT2, on which insulation material foam IM is applied on the rear side, has a flattened edge contour AGR. Between the rear-side outer contour of the inner container GT2 and the inner wall of the opening OF2 * thus an angle of more than 90 ° is formed. For flattening an angle between 1 10 and 160 ° is preferably selected. In the sectional view of FIG. 16, an obtuse angle is formed between the upper trailing edge of the rear wall of the inner container GT2 and the beveled demolition edge of the breakthrough opening OF3 * .
- the chamfer AGR runs continuously from the rear wall-side upper edge to the front lower edge of the aperture opening OF3 * .
- the through-hole OF3 * therefore has a chamfer viewed from the foam side, so that in the transition region between the rear wall surface of the inner container GT2 and the inner wall of the opening OF3 *, rectangular edges are largely avoided.
- a sprayed-on adhesive fiber can largely fit snugly against the chamfered or chamfered inner contour of the aperture opening OF3 * . It is thus for this adhesive fiber provide a larger contact area with respect to a breakthrough opening OF3 * with rechteckwinkliger Abdichtkontur.
- the free span length for the respective adhesive fiber, such as PKF81 here over the remaining clear width of the opening can be reduced, so that breaks or other damage or overstress are largely avoided.
- a multiplicity of adhesive fibers are sprayed onto the opening OF3 * as a structure from the rear side of the inner container GT2, then a largely foam-tight sealing structure forms against foam passage during the application of the insulating material IM, which at the same time is gas-permeable. Due to the chamfered edge contour EGR of the aperture opening OF3 * , the sprayed-on structure of adhesive fibers can be made more uniform and denser.
- the individual adhesive fibers Under the action of the foam of the insulating material IM, the heat development occurring and the pressure exerted during its expansion, the individual adhesive fibers can be deformed far less than in the case of a substantially rectangular demolition edge. Thereby, the sealing and holding function of the sprayed-on adhesive fiber structure can be improved.
- the distance between the glue nozzle to the workpiece surface is about 70 mm.
- the spray width is larger and thus the amount of adhesive per mm 2 at the relevant Aussprühstellen lower. If the spray distance between the adhesive nozzle of the spray-adhesive processing unit and the respective workpiece or, in general terms, respective coverage area becomes smaller, the following effects occur: The spray width becomes smaller.
- spray gaps of at least 50 mm between the spray nozzle of the spray adhesive processing unit and the respective covering area are expedient. Spray distances below 50 mm lead to flying adhesive residues and undesirable thread dimensions.
- a spray air pressure of at least 5 bar is selected.
- Compressed air networks in the production often provide an air pressure of 5 bar, so that this compressed air network can be used immediately.
- it may be appropriate to provide a separate compressed air supply the higher Provide pressures of more than 5 bar, especially between 8 and 10 bar, so that a finer spraying of adhesive fibers can be achieved.
- the adhesive temperature of the adhesive is suitably between 130 and 170 0 C, in particular selected between 140 and 150 0 C.
- the travel speed of the spray nozzle is suitably chosen between 0.05 and 1 m / s. If the spray nozzle travel speeds are too high, foam-tight spraying can be achieved less well or not at all. On the other hand, if the travel speeds are below 0.05 m / s, the application of the adhesive fibers becomes too dense. This would result in unnecessarily high material consumption and insufficient air permeability of the application of adhesive fibers.
- the adhesive pressure for spraying the adhesive fibers is suitably adjusted by about 12.0 bar. Namely, if the amount of adhesive fibers that is sprayed becomes too high, too thick fibers with large gaps and lumpy adhesive accumulations will form on the respective cover area. If too much glue applied, is also the respective Workpiece too warm on its cover area. Is the workpiece through the
- Inner container of the refrigerator formed, which is made of plastic, so there deformations of the back would be possible, which is undesirable.
- Time unit to be sprayed The available time is fixed for a production line by their cycle time. Since time and amount of adhesive are specified, it does not matter whether a specified spray strength is once traversed at 0.1 m / s or twice at 0.05 m / s. A direct descending along the respective covering area, in particular the respective component contour concentrates the amount of adhesive available at the relevant location. An additional pendulum movement of the spray nozzle distributes the adhesive material only to a larger coverage area.
- the material consumption is low. It is possible to produce a largely tear-resistant, hard-wearing and air-permeable web of adhesive fibers. It can be observed in practice a lesser loss of strength of the web on contact with the warm insulating foam material. Since the spaces between the individual fibers can be made microscopic, the cover can be largely foam-tight. In addition, an impermissible thermal stress of the adhesive is largely avoided. The same applies to the processing unit. Furthermore, the energy required to heat the adhesive is lower than in the case of surface application of adhesive layers. The spray adhesive processing unit also allows for short heat-up times after any plant downtime.
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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)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE200810009786 DE102008009786A1 (de) | 2008-02-19 | 2008-02-19 | Kältegerät, Verfahren sowie Vorrichtung zu dessen Herstellung |
| PCT/EP2009/051998 WO2009103774A1 (de) | 2008-02-19 | 2009-02-19 | Kältegerät, verfahren sowie vorrichtung zu dessen herstellung |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP2242970A1 true EP2242970A1 (de) | 2010-10-27 |
Family
ID=40720061
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP09713646A Withdrawn EP2242971A1 (de) | 2008-02-19 | 2009-02-11 | Kältegerät, verfahren sowie vorrichtung zu dessen herstellung |
| EP09712425A Withdrawn EP2242970A1 (de) | 2008-02-19 | 2009-02-19 | Kältegerät, verfahren sowie vorrichtung zu dessen herstellung |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP09713646A Withdrawn EP2242971A1 (de) | 2008-02-19 | 2009-02-11 | Kältegerät, verfahren sowie vorrichtung zu dessen herstellung |
Country Status (5)
| Country | Link |
|---|---|
| EP (2) | EP2242971A1 (de) |
| CN (1) | CN101952677B (de) |
| DE (1) | DE102008009786A1 (de) |
| RU (1) | RU2488050C2 (de) |
| WO (2) | WO2009103639A1 (de) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102010001454A1 (de) | 2010-02-01 | 2011-08-04 | BSH Bosch und Siemens Hausgeräte GmbH, 81739 | Vorrichtung zum Erzeugen eines Gespinsts und deren Verwendung |
| CN102192633B (zh) * | 2011-03-29 | 2016-05-18 | 海信容声(广东)冷柜有限公司 | 一种冷柜拼接内胆及其加工方法 |
| DE102011118512A1 (de) * | 2011-11-14 | 2013-05-16 | Liebherr-Hausgeräte Ochsenhausen GmbH | Verfahren zur Herstellung eines Kühl- und/oder Gefriergerätes |
| DE102012005783A1 (de) * | 2012-02-08 | 2013-08-08 | Liebherr-Hausgeräte Ochsenhausen GmbH | Verfahren zur Einstellung des Kältemitteldurchflusses bei einem Kühl- und/oder Gefriergerät |
| JP6875221B2 (ja) * | 2017-07-25 | 2021-05-19 | 日立グローバルライフソリューションズ株式会社 | 冷蔵庫 |
| CN110549533B (zh) * | 2018-05-30 | 2021-07-30 | 杭州喆诺制冷设备有限公司 | 冷冻柜安装方法 |
| CN114812066B (zh) * | 2021-01-22 | 2023-08-15 | 青岛海尔电冰箱有限公司 | 冰箱 |
| EP4388257A1 (de) * | 2021-09-01 | 2024-06-26 | Liebherr-Hausgeräte Lienz GmbH | Verfahren zum anordnen eines elektrischen oder elektronischen bauelementes an einem kühl- und/oder gefriergerät |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5596894A (en) * | 1979-01-19 | 1980-07-23 | Sanyo Electric Co Ltd | Manufacture of heat exchanger |
| DE69017620T2 (de) * | 1989-12-21 | 1995-09-21 | Jsp Corp | Pressform und ihre Verwendung in einem Verfahren zum Herstellen von formgeschäumten Artikeln. |
| DE4418068C2 (de) * | 1994-05-24 | 1996-09-05 | Daimler Benz Ag | Spritzkopf zum Auftragen von Schmelzkleber |
| JP3148676B2 (ja) * | 1997-04-01 | 2001-03-19 | 株式会社淀川製鋼所 | 冷蔵庫用の箱体 |
| ITPN20030016A1 (it) * | 2003-02-28 | 2004-09-01 | Electrolux Home Products Corporatio N N V | Impianto e procedimento per applicazione di evaporatore a cella formata. |
| US7065983B2 (en) * | 2003-06-06 | 2006-06-27 | Albert Long Trinh | Adhesive ice bag device |
| DE102004027557A1 (de) * | 2004-06-04 | 2005-12-22 | Tesa Ag | Verwendung eines einseitig selbstklebend ausgerüsteten Klebebands als Entlüftungsband mit einer Luftdurchlässigkeit von größer 30 cm3/(cm2*s) |
| DE102005016876A1 (de) * | 2005-04-12 | 2006-10-19 | Liebherr-Hausgeräte Ochsenhausen GmbH | Verfahren zum Abdichten von Spalten zwischen zusammengefügten Bauteilen eines Kühlgerätes |
-
2008
- 2008-02-19 DE DE200810009786 patent/DE102008009786A1/de not_active Withdrawn
-
2009
- 2009-02-11 EP EP09713646A patent/EP2242971A1/de not_active Withdrawn
- 2009-02-11 CN CN200980105770.XA patent/CN101952677B/zh active Active
- 2009-02-11 WO PCT/EP2009/051562 patent/WO2009103639A1/de not_active Ceased
- 2009-02-11 RU RU2010135807/13A patent/RU2488050C2/ru not_active IP Right Cessation
- 2009-02-19 WO PCT/EP2009/051998 patent/WO2009103774A1/de not_active Ceased
- 2009-02-19 EP EP09712425A patent/EP2242970A1/de not_active Withdrawn
Non-Patent Citations (2)
| Title |
|---|
| None * |
| See also references of WO2009103774A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101952677A (zh) | 2011-01-19 |
| RU2488050C2 (ru) | 2013-07-20 |
| WO2009103774A1 (de) | 2009-08-27 |
| CN101952677B (zh) | 2013-04-24 |
| WO2009103639A1 (de) | 2009-08-27 |
| RU2010135807A (ru) | 2012-03-27 |
| EP2242971A1 (de) | 2010-10-27 |
| DE102008009786A1 (de) | 2009-08-20 |
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