Classifications

• • A—HUMAN NECESSITIES
  • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
  • A47K—SANITARY EQUIPMENT NOT OTHERWISE PROVIDED FOR; TOILET ACCESSORIES
  • A47K3/00—Baths; Douches; Appurtenances therefor
  • A47K3/28—Showers or bathing douches
  • A47K3/40—Pans or trays
• • C—CHEMISTRY; METALLURGY
  • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
  • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
  • C25D11/00—Electrolytic coating by surface reaction, i.e. forming conversion layers
  • C25D11/02—Anodisation
  • C25D11/04—Anodisation of aluminium or alloys based thereon
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F28—HEAT EXCHANGE IN GENERAL
  • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
  • F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
  • F28D7/08—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being otherwise bent, e.g. in a serpentine or zig-zag
  • F28D7/082—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being otherwise bent, e.g. in a serpentine or zig-zag with serpentine or zig-zag configuration
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F28—HEAT EXCHANGE IN GENERAL
  • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
  • F28F1/00—Tubular elements; Assemblies of tubular elements
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F28—HEAT EXCHANGE IN GENERAL
  • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
  • F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
  • F28D21/0001—Recuperative heat exchangers
  • F28D21/0012—Recuperative heat exchangers the heat being recuperated from waste water or from condensates
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F28—HEAT EXCHANGE IN GENERAL
  • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
  • F28F2275/00—Fastening; Joining
  • F28F2275/02—Fastening; Joining by using bonding materials; by embedding elements in particular materials
  • F28F2275/025—Fastening; Joining by using bonding materials; by embedding elements in particular materials by using adhesives

Definitions

• the invention relates to the field of heat exchangers and more particularly to a shower tray according to the preamble of the corresponding independent claims, as well as a method for producing a shower tray.
• Such a shower tray is known for example from WO 2010/088784 AI the same applicant.
• the heat exchanger has a flat cover plate as a drainage surface over which wastewater drains.
• the cover plate is formed of chrome steel, forms the bottom of the shower tray and can be molded integrally with the shower tray.
• the plate consists of two layers, one of which is profiled and placed under the other, whereby meandering channels are defined between the plates, or tubes through which water to be heated flows are soldered against a plate.
• DE 44 06 971 shows a shower tray, at the bottom by the welding of pipes or profiles channels are attached, flows through which cold water.
• NL 1031082 shows a heat exchanger below a shower tray, in which pipes are soldered via a narrow web to a drainage surface.
• WO 2009/030503 describes the production of thermal solar collectors in which thermal fluid tubes are welded to an absorber sheet with a laser.
• GB2420973 shows a shower tray with heat exchanger with an undercut tub rim, in which an elastic region of an insertable pan bottom snaps.
• a further undercut region of the tub rim can cooperate with projections of the tub bottom, in order to lock or release it upon rotation of the tub bottom.
• a shower tray with a heat exchanger wherein the heat exchanger is arranged below the shower tray for heat recovery from waste water for warming up fresh water, wherein a first heat exchanger surface in contact with the waste water and a second heat exchanger surface in contact with the Fresh water is standing, and the first heat exchanger surface forms the bottom or part of the bottom of the shower tray.
• the shower tray is made of aluminum or one Made of aluminum alloy. As aluminum alloys, metal alloys are considered which have a weight fraction of at least 80% aluminum. In the following, where aluminum is concerned, an aluminum alloy is also meant. It is also possible to manufacture the tub from a material with a thermal conductivity of over 100 W / (mK).
• the second heat exchange surface is formed by tubes, which are connected by a cohesive connection, in particular welding or soldering, with the bottom of the shower tray
• interstices form channels for guiding the fresh water, as described in the already mentioned WO 2010/088784, which is hereby incorporated by reference, in particular with their figures 2-6 and 9 and the corresponding description parts.
• the inner diameter of the tubes is kept small, or it is profiled the inside of the tubes, which can be done for example by deforming the tubes from the outside.
• the flow resistance of the tubes increases, which is why several tubes are guided in parallel.
• the length of the tubes is substantially the same.
• the tubes are composite tubes (or dual tubes) having an outer layer of aluminum or an aluminum alloy and an inner layer of copper or a copper alloy.
• copper alloys metal alloys are considered, which account for at least 50% by weight. Have copper. In what follows, where copper is concerned, a copper alloy is also meant.
• a copper tube is welded to the bottom of the aluminum tub, in particular by means of laser welding.
• a weldable anodization layer is formed on the bottom of the tub.
• the shower tray and the outside of the tubes are anodized.
• the tubes are capped to prevent the copper layer in the tubes from being dissolved by the anodizing bath.
• the anodization occurs after welding, whereby the welding process is simplified.
• connecting the pipes with copper connecting elements after anodizing becomes more complicated, since the formation of a galvanic element is to be prevented.
• an edge region of the shower tray has a further or a reinforced coating, in particular a layer produced by powder coating, for example with aluminum oxide, or a lacquer layer.
• a further or a reinforced coating in particular a layer produced by powder coating, for example with aluminum oxide, or a lacquer layer.
• the entire membrane has a coating which permits corrosion protection or wear protection and / or wetting of the surface (hydrophilic coating).
• the shower tray is formed by a forming process, in particular by deep drawing or by hydroforming (hydroforming) or by superplastic deformation. You can also be formed by bending and welding individual sections of the shower tray.
• connection can be made simple by soldering or welding.
• the laser welding of good quality is possible. This improves the quality and the life of the device.
• the outlet area can be made narrower, whereby the active area of the heat exchanger is greater than is possible, for example, a steel tub similar shape. Also so that an improvement of the efficiency takes place.
• sharper contours can be formed in the four corners of the shower tray, so that according to one embodiment, no cutting and Welding or no other elements as "gap filler" are required for installation.
• Aluminum is more than 3 times lighter than copper and a little less than 3 times lighter than steel, leading to considerable weight savings for the Tansport to the construction site and also facilitates installation for precise positioning of the tub.
• the combination of hydroforming to form the tub with anodizing as a surface treatment drawing marks on the top of the tub, which arise in a normal forming with punch and die, would have to be reworked or laminated by a material-applying process (coating, painting).
• a material-applying process coating, painting
• a further advantage of the production by means of hydroforming is that the undercut parts can be shaped in a particularly simple manner, ie without the use of slides.
• the shower tray has a lid, and further includes a first edge and a second edge, the first and second edges facing each other, and wherein at the first edge there is an inclined support portion for Supporting the lid is present, and at the second edge of the shower tray, which lies opposite the first edge, there is an undercut edge area. Due to the inclination in the support area of the lid is pressed under load in the undercut area. In the support region, there are preferably no undercut regions and the cover can easily be lifted upwards. In the undercut area, on the other hand, the lid can not be raised without first pulling the lid out of the undercut area in the horizontal direction towards the second edge.
• reinforcing profiles are arranged on the underside of the shower tray.
• the reinforcing profiles can be welded or glued to the shower tray.
• the reinforcing profiles may have a U-profile and so embrace one or more of the tubes or bridge. This implies that the reinforcing profiles are attached to the shower tray after attaching the tubes.
• the method may comprise the further steps of:
• This insulating layer prevents a flow of charge carriers in the area between the outer layer of the tubes (for example aluminum) and the collecting pieces or transition tubes (for example a copper alloy), and the formation of a galvanic element, if this area becomes dirty and / or damp.
• the transition tubes are made of copper, for example.
• the insulating layer is formed for example by a shrink tube or by a coating in the region of the connection between the collecting pieces respectively transition tubes and a portion of the tubes respectively the outer (aluminum) layer.
• the method for producing a shower tray can, in particular when using hydroforming, be carried out repeatedly, with shower trays having differently wide outer edge areas being produced, such outer edge areas adjoining edge areas of a depression of the shower tray. These outer edge areas form a standing surface after installation of the shower tray. So it is with the same mold shower trays for showers with different levels of standing space produced.
• a shower tray with a heat exchanger wherein the heat exchanger is arranged below the shower tray for heat recovery from waste water for warming up fresh water, wherein a first heat exchanger surface in contact with the waste water and a second heat exchanger surface in contact with the Fresh water is available, and the first heat exchanger surface forms the tub bottom or part of the tub bottom.
• the shower tray is made of a steel alloy and in the bottom of the tub below the shower tray is a bottom plate, also called metal plate or heat exchanger plate attached from another metal on the tub bottom, which is formed over the entire surface of the bottom plate, a heat-conducting connection to the tub bottom substantially , Again below this bottom plate tubes are connected by a cohesive connection, in particular by welding or soldering, with the bottom plate, said tubes form the second heat exchange surface.
• the heat exchanger plate is fixed by means of a solid compound on the underside of the tub bottom, preferably by an adhesive or welding process, for example with an adhesive film or by means of an epoxy resin.
• the welding process can be friction welding.
• the epoxy resin can be mixed with additives to increase its thermal conductivity.
• the shower tray on the top of an enamel layer, and is not enameled on the underside, wherein on the bottom ribs for mechanically stabilizing the shape of the tub bottom are arranged.
• these ribs are about ten millimeters high and stabilize the bottom of the tub during enameling: they prevent bending which would bulge the tub bottom up or down, whereafter the effluent would no longer drain evenly over the tub bottom.
• the enamel layer is mixed with additives to improve its thermal conductivity, in particular with metal particles. These are made, for example, of stainless steel (also called Inox), in particular CrNi steel. Although such steels are by themselves poor heat conductors, they surprisingly lead to an improvement in the thermal conductivity of the enamel as enameling additives.
• an enamel layer can also be used independently of the application to heat exchangers, for example for the coating of cookware. According to a further aspect of the invention, therefore, an enamel layer is created, which has a comparatively high thermal conductivity.
• the shower tray according to the first aspect of the invention can be understood and realized completely independently of a shower tray according to the second aspect of the invention.
• the method of manufacturing a steel alloy shower tray comprises the following steps
• the ribs are coated, in particular by painting.
• the following steps are performed to enamel the shower tray
• a semi-finished product for the production of a shower tray includes: a flat bottom plate with tubes welded to it.
• the bottom plate has cutouts for passing ribs of the shower tray.
• the heat exchanger for example, a width between 50cm and 150cm and a length between 50cm and 150cm. The width and length are at least approximately 75 cm, according to one embodiment.
• the term "shower tray” in this application is also understood as comprising the term "bathtub". In a further embodiment, therefore, the shower tray is a bathtub.
• the heat exchanger for example, a width between 20cm and 70cm and a length between 80cm and 200cm.
• a pitch between parallel tubes of the heat exchanger is, for example, 1cm to 5cm or 2cm to 5cm, more preferably at least approximately 2.4cm (measured from center to center of the tubes).
• the tube spacing is in particular less than 7 cm.
• the distances between welding points about 2mm measured from center to center of the welding points
• the welding points themselves have a diameter of less than 2mm, and the pipe diameters are smaller, ie with inner diameters between 4mm and 10mm, especially 4.75mm.
• clusters to which the tubes are connected may be located outside the drains. be arranged surface. This makes it possible that the largest possible surface of Abiauf design acts as a heat exchanger.
• the slope of the trough bottom is for example between 3% and 4.5%, in particular 3.5%. This applies to the bottom of the tank in the assembled state. Assuming that the edges of the tub are to be mounted horizontally, this also applies to the angle between the upper edges of the tub and the tub bottom. With this slope, there is a particularly good heat transfer, unexpectedly better than at a smaller angle, such as 2%.
• Figure 1 is a shower tray in a first embodiment
• Figure 2 is a shower tray in a second
• FIG. 3 shows a cross section of the structure of a heat exchanger with a
• Figures 4 and 5 are cross sections of the structure of a heat exchanger with a
• Figure 6 shows a shower tray with a projection for the arrangement of a
• Figure 7 shows a bottom plate with heat exchanger tubes
• Figures 8 and 9 show a shower tray in a third embodiment
• FIG. 10 Variants of border areas to a shower tray; and Figure 1 1 a shower tray with an undercut edge area.
• FIG. 1 shows a shower tray 10 in a first embodiment in an exploded view.
• the shower tray 10 is formed as a heat exchanger 1 by a tub bottom 12, which is covered during the shower of sewage, is thermally conductively connected to tubes 14 through which fresh water is passed.
• the tubes 14 extend over as large a part of the tub bottom 12.
• the fresh water is supplied to the tubes 14 through a supply line 22 and a first claw 21, and there to several (two, three, four, five, six or more) parallel Pipes 14 distributed, flows in the opposite direction to the wastewater or in the same direction through the meandering tubes 14 to a second claw 21.
• the tubes 14 are guided substantially equidistant from each other, whereby a balanced heat transfer takes place over the surface.
• the tubes 14 are spaced apart both in the region in which they extend transversely to the slope of the trough bottom 12 and in the region in which they are parallel to the gradient.
• the distance of the tubes 14 is between 20mm and 30mm, for example 24mm (measured from center to center).
• the sections of the individual tubes 14 between the collecting pieces 21 are all of the same length, so that their flow resistance and thus also their flow rate are essentially the same.
• transitional tube 20 may be arranged for manufacturing reasons.
• the wastewater flows via a slightly inclined cover 4 to one side of the shower tray 10 toward an inlet region 33, and from this in turn, distributed over the width of the trough 12, via the trough bottom 12 to an outlet region 34 and from there a run 35.
• An edge region 32 which preferably leads around the shower tray 10, is in formed at an angle between about 40 ° to 70 ° obliquely.
• height adjustable feet 132 may be present.
• the lid 4 is formed at its lid edge 42 with a corresponding slope. As a result, the edge region 32 forms a cross-sectionally trapezoidal seat for the lid 4 and centers it in the shower tray 10.
• FIG. 2 shows a shower tray in a second embodiment in an exploded view.
• the bottom 12 of the tank has webs or ribs 31 for reinforcement.
• a metal plate hereinafter referred to as bottom plate 13 is arranged.
• This bottom plate 13 has cutouts 23 which correspond to the position of the ribs 31, i. are each cut in the region of a rib 31, so that the bottom plate 13 can be fixed flat on the underside of the tub bottom 12.
• At the edge of the shower tray 10 can be bent down or molded side walls 37.
• FIG. 3 shows a cross section of the construction of a heat exchanger with a shower tray 10 made of aluminum, usually an aluminum alloy.
• the shower tray 10 is preferably made in one piece by a forming process, in particular hydroforming, and / or by cutting, bending and welding; Thus, the tub bottom 12 is made of this material.
• the tank bottom 12 is overflowed during operation with warm waste water 145.
• pipes 14 with fresh water 144 for example in an arrangement according to FIG. 1 or 2, are welded directly against the underside of the tank bottom 12, in particular by laser welding, or soldered.
• Contact areas of solder joints or welding points 143 have a diameter d of preferably less than 2 mm.
• the distance between welding points 143 is, for example, at least approximately 1 mm (along the direction of the pipe). In one embodiment, the distance is the Welding points 143 in the range between 1.5mm and 2.5mm, especially at 2mm (measured from the center of a weld point to the middle of the next weld point, respectively). This results in a better heat transfer: a greater distance degrades the efficiency of the heat exchanger, a smaller distance does not improve it significantly.
• the diameter of a welding point is for example less than 2mm, in particular about 1mm.
• the tubes 14 are made of aluminum or an aluminum alloy. Preferably, they are also coated on the inside, for example with polyethylene (PE).
• the tubes 14 are composite tubes (bimetallic tubes, composite tubes, dual tubes) with an outer wall or outer layer 141 of aluminum or an aluminum alloy and with an inner wall or inner layer 142 of copper or a copper alloy., For example, phosphorus deoxidized copper ( Cu-DHP).
• Example composite tubes have a wall thickness of about 0.55 mm aluminum (alloy) and 0.25 mm copper (alloy) with an outer diameter of about 6.5 mm (1/4 "inch, 6.35mm) .
• the inner diameter is about 4.75mm
• the shower tray 10 and thus also the tub bottom 12 and the tubes 14 are preferably anodized (anodized), in particular hard anodized, and thus abrasion resistant and yet thermally conductive
• the tank bottom 12 may be painted at least on the wastewater side, ie the upper side, preferably with a hydrophilic lacquer.
• FIG. 10 schematically shows shower trays 10 with different variants of outer edge regions 36.
• Such variants can be produced in the same form by forming, in particular hydroforming.
• the shape of the depression of the trough with the trough bottom 12 and the heat exchanger 1 is the same in these variants, an outer edge region 36 adjoining the depression is configured differently widely expanded in one or more directions.
• these outer edge portions 36 are substantially horizontal and form a tread.
• the shower tray 10 is stainless steel, in particular stainless steel, and tubes 14 are welded from copper or a copper alloy.
• Figure 4 shows a cross section of the construction of a heat exchanger with a shower tray 10 made of steel, usually of an enamelled steel.
• the shower tray 10 is preferably made in one piece by a forming process, and / or by cutting, bending and welding;
• the tub bottom 12 is made of this material.
• the tank bottom 12 is overflowed during operation with warm waste water 145.
• tubes 14 are welded with fresh water 144, for example in an arrangement according to the figure 1 or 2, against the underside of a bottom plate 13, in particular by laser welding, or soldered.
• Contact areas of solder joints or welding points 143 in this case have a diameter d of preferably less than 2 mm, thereby standards for drinking water protection can be met.
• the bottom plate 13 in turn is glued by means of an adhesive layer 15 against the tub bottom 12.
• a cover layer typically a lacquer or enamel layer 16 is applied.
• the material of the bottom plate 13 and tubes 14 is preferably substantially the same or the same, that is, for example, in each case an aluminum (alloy) or in each case a copper (alloy). As a result, they can be easily connected to each other, in particular by welding or soldering. If the material is aluminum or an aluminum alloy, the tubes 14 are, for example, composite tubes, as described above, ie at least on the outside of the tubes of aluminum or an aluminum alloy.
• the adhesive layer 15 causes on the one hand a compensation of different expansions of tub bottom 12 and bottom plate 13 when heated, and on the other hand, the heat transfer from the tub bottom 12 to the tubes 14.
• the adhesive layer 15 is formed according to a variant by an adhesive film, ie by a thin layer or film provided, adhesive material, for example of a thermoplastic material.
• adhesive material for example of a thermoplastic material.
• additives are for example powders of a metal (aluminum, copper, etc ...) or a carbide or boride (SiC, TiC, TiB 2 ).
• the adhesive layer 15 is an epoxy resin, which may also be mixed with one of said materials as an additive for improving the thermal conductivity.
• FIG. 5 accordingly shows a variant of FIG. 4 with metal particles 151 in the adhesive layer 15.
• the cover layer is an enamel layer 16
• the base material for the enamel layer 16 is mixed with a material for improving the thermal conductivity before enameling.
• this material is a stainless steel (inox), in particular a CrNi steel.
• Example 1 Mixture of commercially available Grundemai Ischl icker and 50 wt .-% stainless steel powder Cold 100. Result after firing at 850 ° C on a shower tray: The layer thickness was 150 ⁇ and the surface had melted smooth. The adhesion according to EN 10209 Annex D was 1. Cold 100 is a material with 19.1% Ni, 20% Cr, and 6.3% Mo.
• Example 2 Mixture of commercially available acid-resistant direct enamel and 30% by weight of 304 LHD stainless steel powder. Result after baking at 830 ° C on a shower tray: The layer thickness was 100 ⁇ and the surface was melted smooth. The adhesion according to EN 10209 Annes D was 1. 304 LHD is a material with 1 1, 8% Ni and 19% Cr.
• Example 3 Mixture of commercial titanium white enamel and 20% by weight 316 LHD. Result after baking at 820 ° C on a shower tray: The thickness of the titanium white enamel was 150 ⁇ . The surface was smooth melted and slightly colored by the stainless steel particles. 316 LHD is a material with 12.7% Ni, 17% Cr and 2.2% Mo.
• Example 4 Mixture of commercial base enamel and 70% by weight of 434 LHC stainless steel powder. Result after firing at 850 ° C on a shower tray: The adhesion according to EN 10209 Annex D was 2. The surface was uniformly matt. 434 LHC is a material with 16.8% Cr and 1.0% Mo. In the production of the enamel layer, at least one base enamel layer, the shower tray 10 must be enamelled as a whole. In order to prevent deformation of the trough base 12 at the high temperatures (850 ° C) during enamelling, ribs 31 may be welded or soldered below the trough bottom 12. Before gluing the bottom plate 13 with the tubes 14, the underside of the tub bottom 12 is sandblasted or removed there the enamel layer in other ways.
• FIG. 6 shows an embodiment in which the outlet 35 is arranged next to the discharge surface 17 acting as a heat exchanger.
• the Abiauf configuration 17 forms in particular a rectangle (or a circle or an oval), and the process is not within this rectangular shape (or circular or oval shape) arranged.
• the entire Abiauf configuration 17 is available as a heat exchanger surface.
• a more regular guidance of, for example, meandering tubes over Abiiller design is possible because there is no interruption of the rectangular (or circular or oval-shaped) surface through the drain. This also improves the heat transfer.
• FIG. 7 shows, correspondingly, a base plate 1 with a substantially rectangular contour, wherein the tubes 14 for the connection of collecting pieces 21 (dashed lines) are arranged substantially outside this contour.
• the drain 35 may be arranged in particular in a projection 18 of the shower tray 10, so that the basic mass of the shower tray 10 are not affected. Only in the region of the projection 18 can be provided, for example, a corresponding opening in a wall 19, for example a lightweight wall, behind which lines, when installing the shower tray.
• the outlet region 34 is a groove or depression, which leads the waste water to the outlet 35.
• Figures 8 and 9 show a shower tray in a third embodiment in a plan view and a bottom view.
• the individual elements are designed as in the embodiment of FIG. 1, in particular with a trough made of aluminum or an aluminum alloy.
• a difference with respect to FIG. 1 is that the trough bottom does not have a pronounced discharge channel towards the outlet, but rather a transverse gradient, for example in the form of a triangle.
• the bottom of the tank can have a gradient of 3.5% in the main direction of flow.
• reinforcing profiles 131 are additionally present here, which are firmly connected to the underside of the trough base 12, in particular by gluing, soldering or welding.
• the reinforcing profiles 131 are glued for manufacturing reasons on the underside of the trough bottom 12, for example with an epoxy adhesive.
• the reinforcing profi le 131 have a U-profile with additional flanges, which form the connection to the tub bottom.
• the reinforcing profiles 131 are respectively connected at the two ends of the two arms of the U-profile (viewed in cross section) with the underside of the tub bottom.
• the reinforcing profiles 131 extend parallel to sections of the tubes 14 and thereby encompass one or more of the tubes 14.
• the tubes 14 thus pass through the U-profile of the reinforcing profiles 131.
• the reinforcing profiles 131 stiffen the trough bottom and thus allow it to be made of thinner material shape.
• FIG. 11 shows a shower tray 10 with an undercut edge region 38. This lies opposite a bevelled support region 39. These two areas form a seat for the lid 4. The edge is formed in the undercut region 38 on one side of the shower tray 10, viewed in a plane perpendicular to the edge cross-sectional plane, undercut. It thereby forms a recess, in which the edge of the lid 4 is located.
• the support region has an inclination of between 30 ° and 80 °, in particular between 45 ° and 70 ° and especially of 60 ° with respect to the normal (in the assembled state of the tub, wherein the upper edge of the tub is horizontal). The cover 4 thus rests on the support region 39 and can be lifted there without further ado.

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• Engineering & Computer Science (AREA)
• Public Health (AREA)
• Health & Medical Sciences (AREA)
• Chemical & Material Sciences (AREA)
• Thermal Sciences (AREA)
• General Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Physics & Mathematics (AREA)
• Materials Engineering (AREA)
• Organic Chemistry (AREA)
• Metallurgy (AREA)
• Electrochemistry (AREA)
• Epidemiology (AREA)
• General Health & Medical Sciences (AREA)
• Chemical Kinetics & Catalysis (AREA)
• Details Of Heat-Exchange And Heat-Transfer (AREA)
• Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
• Laser Beam Processing (AREA)

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• 2012
  • 2012-01-11 CH CH00059/12A patent/CH705186A2/de not_active Application Discontinuation
  • 2012-06-07 WO PCT/CH2012/000127 patent/WO2012171129A2/de not_active Ceased
  • 2012-06-07 US US14/126,559 patent/US20140237714A1/en not_active Abandoned
  • 2012-06-07 CN CN201280039968.4A patent/CN103826514A/zh active Pending
  • 2012-06-07 CA CA2838494A patent/CA2838494A1/en not_active Abandoned
  • 2012-06-07 EP EP12728367.9A patent/EP2720591B1/de active Active
  • 2012-06-07 JP JP2014515017A patent/JP2014523511A/ja active Pending

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