EP4239134A1 - Bac de douche avec échangeur de chaleur - Google Patents

Bac de douche avec échangeur de chaleur Download PDF

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Publication number
EP4239134A1
EP4239134A1 EP23160118.8A EP23160118A EP4239134A1 EP 4239134 A1 EP4239134 A1 EP 4239134A1 EP 23160118 A EP23160118 A EP 23160118A EP 4239134 A1 EP4239134 A1 EP 4239134A1
Authority
EP
European Patent Office
Prior art keywords
shower tray
water
flat element
tray according
heat exchanger
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.)
Pending
Application number
EP23160118.8A
Other languages
German (de)
English (en)
Inventor
Oliver Baum
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Warmduscher GmbH
Original Assignee
Warmduscher GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Warmduscher GmbH filed Critical Warmduscher GmbH
Publication of EP4239134A1 publication Critical patent/EP4239134A1/fr
Pending legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03C—DOMESTIC PLUMBING INSTALLATIONS FOR FRESH WATER OR WASTE WATER; SINKS
    • E03C1/00—Domestic plumbing installations for fresh water or waste water; Sinks
    • E03C1/02—Plumbing installations for fresh water
    • E03C1/04—Water-basin installations specially adapted to wash-basins or baths
    • E03C1/0408—Water installations especially for showers
    • 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
    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03C—DOMESTIC PLUMBING INSTALLATIONS FOR FRESH WATER OR WASTE WATER; SINKS
    • E03C1/00—Domestic plumbing installations for fresh water or waste water; Sinks
    • E03C2001/005—Installations allowing recovery of heat from waste water for warming up fresh water

Definitions

  • the invention relates to a shower tray with a recess in the shower tray, in which a heat exchanger is provided for heating incoming cold water when showering by heat recovery from service water, with a water-permeable cover that can be walked on being provided over the recess.
  • showering consumes large amounts of energy.
  • the cold water supplied is heated using suitable techniques and then supplied to the respective shower.
  • the heating can be done by district heating, gas, oil, electricity or solar thermal energy.
  • the heated water is mixed with cold water to the desired temperature in the so-called mixer tap directly in front of the shower head. This occurs, for example, when central water heating is provided.
  • the cold water can also be heated using a heating device that, for example, heats the cold water directly to the shower temperature.
  • Such heating devices are, for example, controllable instantaneous water heaters or gas heaters.
  • Such devices are then installed structurally close to the shower.
  • a shower has a floor. This can be a shower tray, for example. Alternatively, particularly in the case of walk-in showers, the floor of the shower is designed as a tiled surface. Both the shower tray and the tiled floor have a drain.
  • the shower water temperature is between 37°C and 42°C, depending on the measuring point and personal well-being.
  • the water flows over the body and from there straight down the drain and into the sewage system. When it exits the shower tray, the water still has a Residual heat of mostly over 34°C. The use of this residual heat holds an enormous energy saving potential.
  • the object of the invention is to improve heat recovery when showering in a simple and cost-effective manner and to reduce the maintenance effort required during long-term use to a minimum.
  • the heat exchanger provides at least one flat element with at least one embossing, which is arranged on at least one section of a bottom of the depression and is firmly connected to the at least one section of the bottom via a connection, that the connection between the at least a flat element with the at least one embossing and the at least one section of the base is designed to be liquid-tight, so that the at least one embossing of the flat element together with the at least one section of the base forms at least one flow channel for the cold water to be heated to flow through.
  • the device according to the invention allows a shower water heat recovery to be implemented. It has also been shown that at least equivalent and if not even better heat recovery can be achieved compared to the solutions known from the prior art.
  • embossing the cost of materials and production costs for the heat exchanger can be significantly reduced in comparison to production from a solid piece or from many individual parts. Heat exchanger surfaces that are not directly accessible for cleaning are completely avoided. There is no need to remove the heat exchanger for cleaning purposes. There may also be an optimal conduction of the service water on the upper side of the heat exchanger due to the at least one embossing protrusions instead.
  • the at least one embossing forms the at least one flow channel in a simple manner.
  • the shower tray is a shower tray in commercially available standard dimensions. Furthermore, it is advantageous that commercially available odor traps can be used, so that no unusual adjustments have to be made. This means that all standards can be met and the installation effort for installers is minimal.
  • a further teaching of the invention provides that the cover has at least one opening through which process water is applied in a targeted manner to at least one area of the planar element.
  • the cover can be made of the same material as the rest of the shower tray, for example enamelled sheet metal or plastic, or it can be made of other moisture-resistant materials such as bamboo, wood or plastic.
  • a seal preferably a rubber seal, can preferably be provided at least partially between the cover and the recess in the shower tray. This can result in a targeted application of the service water to the flat element exclusively via the openings. It is also advantageous that the cover rests on the depression in a water-permeable manner in at least one contact area.
  • the cover can also lie permeable to water on one or more sides at the edge, as a result of which the water is optimally directed onto the flat element of the heat exchanger. Overall, this makes it possible to optimize the heat exchange between process water and fresh water.
  • a further teaching of the invention provides that the at least one opening in the cover is made in one direction only, preferably embossed, punched or drilled, so that when the cover is arranged on the depression, the at least one opening points in the direction of the Heat exchanger has a drip edge, so that the water on the drip edge detaches from the cover. This avoids water collecting over a large area on an underside of the cover and drying off. When drying, residues would remain on the sheet, which would require time-consuming cleaning.
  • a further teaching of the invention provides that the at least one opening has a length such that a rear end of the at least one opening extends beyond an underside of the cover. This can increase the dripping effect.
  • a further teaching of the invention provides that the at least one flat element is a metal sheet. This enables sufficient heat absorption from the service water of the shower and transfer to the cold water to be supplied in a simple manner.
  • connection between the at least one section of the base and the at least one flat element is a material connection, preferably by gluing, soldering or welding. This makes it possible to produce the heat exchanger in a simple and cost-effective manner.
  • a further teaching of the invention provides that at least one section of the upper side of the flat element has a gradient, for example in the direction of a drain of the shower tray, or is arranged with a gradient, for example in the direction of the drain, so that service water on the Top of the flat element flows in countercurrent to the at least one flow channel flowing in the cold water to be heated. This allows the efficiency of the heat exchanger to be increased in a simple manner.
  • the slope falls from the center towards at least two edges or that the slope falls from one edge to an opposite edge.
  • an optimal countercurrent can preferably be generated.
  • the greatest possible temperature difference is achieved at all points of the heat exchanger in a simple manner.
  • a further teaching of the invention provides that the shower tray has a drain in the bottom of the recess, which is provided separately from the flat element. This allows the water to drain away completely during and after the shower process.
  • the at least one flow channel has at least one connection for at least one supply line for the incoming cold water to be heated and at least one connection for at least one return line for the cold water heated in the heat exchanger for supply to a mixer tap or to a water heating device shower.
  • At least one of the connections is arranged below the depression with the heat exchanger located therein.
  • all visible connections and thus also potential soiling points are eliminated.
  • Another advantage of introducing the water from below is that this means that the process water is discharged using the classic counter-current principle can flow from top to bottom, while the cold fresh water is passed from bottom to top through the at least one flow channel.
  • a further teaching of the invention provides that the at least one flat element and/or the bottom of the recess of the shower tray consists of metal, preferably steel, enamelled steel, copper, aluminum or stainless steel. In this way, optimal heat conduction is provided in a simple manner.
  • the shower tray 10 (see Figure 1 to 7 ) has a trough area 11 which is surrounded, for example, by an edge 12 all the way round.
  • the tub area 11 has a walk-on cover 13 over a depression 14 .
  • the cover 13 has openings 15 through which the hot service water can get into the depression 14 .
  • a top 31 of the cover represents the walkable surface. This is in figure 1 and 3 watch from above.
  • the depression 14 has a bottom 16 in which a drain 17 is provided.
  • the outlet 17 is preferably provided in the deepest area of the recess 14 .
  • a drain fitting 18 is provided on the drain 17 ( figure 4 , 5 and 6 ), which preferably includes an odor trap (not shown).
  • a drain connection 19 is arranged on the drain fitting 18 .
  • a heat exchanger 20 is provided in the recess 14 on the floor 16 (see FIG figure 2 and 7 ).
  • the heat exchanger 20 is formed from a section of the base 16 and a surface element, for example in the form of a metal sheet 21.
  • the sheet metal 21 has an embossing 22 .
  • the metal sheet 21 is placed on the portion of the bottom 16. This is preferably done by connecting the metal sheet 21 to the base 16 in a liquid-tight manner. This is preferably done by a material connection such as welding, soldering or gluing.
  • the sheet metal 21 and also the base 16 are preferably made of a metal. After connecting the sheet metal 21 to the base 16, a flow channel 23 is created by the embossing 22, so to speak, inside the heat exchanger 20.
  • the flow channel 23 runs from a first connection opening 24 for supplying the fresh water to be heated to a second connection opening 25 for discharging the heated fresh water .
  • the fresh water to be heated enters the flow channel 23 through the connection opening 24.
  • the fresh water, which is then finally heated, emerges from the connection opening 25 and from there reaches the shower fitting via a line (not shown).
  • the flow channel 23 shown is designed in two parts as one option, so that the fresh water is divided on two sides from the first connection opening 24 to the two flow channels, to be reunited at the end in the middle to form a flow channel.
  • the embossing 22 is provided in such a way that the flow channel 23 is aligned, if possible, in countercurrent to the process water running off on the upper side 26 of the sheet metal 21 .
  • the embossing 23 forms channel-like depressions 27 on the upper side 26 of the metal sheet 21, through which the process water flows off due to the gradient A to the conclusion 17. A complete drainage of the process water is thus achieved.
  • the openings are, for example, in 7 shown.
  • the cover 13 is shown here as an embossed metal sheet a top 31 as a walkable surface. Opposite, the cover 13 has an underside 29 .
  • the openings 15 are made in the cover 13 between the top 31 and the bottom 29 .
  • An opening 15 preferably has a curve 33 on the entry side 32 of the opening 15 which surrounds the opening.
  • a wall 34 can follow the rounding 33 .
  • the wall 34 surrounds the opening 15 and serves as a conduit through the cover 13.
  • the wall 34 extends to the exit side 35.
  • the wall 34 preferably ends on the exit side 35 in a break-off edge 30.
  • the wall 34 can extend towards the top 26 of the heat exchanger 20 beyond the bottom 29, so that the tear-off edge 30 comes closer to the surface 26 and thus to the recesses 27 in order to give up the process water more precisely.
  • the process water passes through the opening 15 and detaches itself from the surface of the cover 13 at the edge 30 without process water remaining on the underside 29 of the cover 13 .
  • the opening 15 can also be designed as a slit or have another alternative shape.
  • the fresh water is heated by flowing through the flow channel 23 from the connection opening 24 to the connection opening 25 .
  • the warm hot water passes through the opening 15 on the top 26 of the plate 21 of the heat exchanger 20 and flows into the remember-like depressions 27 along the flow channel to the outlet 17 and from there via the drain fitting.
  • the wall 28 between the flow channel 23 and the channel-like depression 27 heat is transferred from the hot service water to the cold fresh water. As a result, the cold fresh water is heated and heat is recovered.

Landscapes

  • Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Hydrology & Water Resources (AREA)
  • Water Supply & Treatment (AREA)
  • Epidemiology (AREA)
  • General Health & Medical Sciences (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
EP23160118.8A 2022-03-04 2023-03-06 Bac de douche avec échangeur de chaleur Pending EP4239134A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102022105176 2022-03-04

Publications (1)

Publication Number Publication Date
EP4239134A1 true EP4239134A1 (fr) 2023-09-06

Family

ID=85505653

Family Applications (1)

Application Number Title Priority Date Filing Date
EP23160118.8A Pending EP4239134A1 (fr) 2022-03-04 2023-03-06 Bac de douche avec échangeur de chaleur

Country Status (1)

Country Link
EP (1) EP4239134A1 (fr)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2502351A1 (de) * 1975-01-22 1976-07-29 Wilfried Von Der Ohe Duscheinrichtung
DD206511A3 (de) 1981-07-23 1984-01-25 Bauakademie Ddr Duschtasse zur waermerueckgewinnung
DE19608404A1 (de) * 1995-03-07 1997-05-07 Miller Bernhard Vorrichtung zur Einsparung warmen Brauchwassers beim Duschen
DE202007007907U1 (de) 2007-06-05 2007-10-31 Wieske, Madlen Duschwanne mit einem Wärmetauscher
US8904638B2 (en) * 2009-02-25 2014-12-09 Ying Lin Cai Heat exchanger for a bathing shower
EP3094937B1 (fr) 2014-01-17 2018-05-23 Joulia AG Échangeur de chaleur pour douche ou baignoire

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2502351A1 (de) * 1975-01-22 1976-07-29 Wilfried Von Der Ohe Duscheinrichtung
DD206511A3 (de) 1981-07-23 1984-01-25 Bauakademie Ddr Duschtasse zur waermerueckgewinnung
DE19608404A1 (de) * 1995-03-07 1997-05-07 Miller Bernhard Vorrichtung zur Einsparung warmen Brauchwassers beim Duschen
DE202007007907U1 (de) 2007-06-05 2007-10-31 Wieske, Madlen Duschwanne mit einem Wärmetauscher
US8904638B2 (en) * 2009-02-25 2014-12-09 Ying Lin Cai Heat exchanger for a bathing shower
EP3094937B1 (fr) 2014-01-17 2018-05-23 Joulia AG Échangeur de chaleur pour douche ou baignoire

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