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EP3170940B1 - Shower wc with water heater - Google Patents

Shower wc with water heater Download PDF

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Publication number
EP3170940B1
EP3170940B1 EP15020231.5A EP15020231A EP3170940B1 EP 3170940 B1 EP3170940 B1 EP 3170940B1 EP 15020231 A EP15020231 A EP 15020231A EP 3170940 B1 EP3170940 B1 EP 3170940B1
Authority
EP
European Patent Office
Prior art keywords
shower
water
boiler
nozzle
conduit
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.)
Active
Application number
EP15020231.5A
Other languages
German (de)
French (fr)
Other versions
EP3170940A1 (en
Inventor
Simon Bachmann
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.)
Geberit International AG
Original Assignee
Geberit International AG
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Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=54608240&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP3170940(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Priority to DK15020231.5T priority Critical patent/DK3170940T3/en
Priority to EP15020231.5A priority patent/EP3170940B1/en
Priority to PL15020231T priority patent/PL3170940T3/en
Priority to ES15020231T priority patent/ES2778101T3/en
Priority to PT150202315T priority patent/PT3170940T/en
Application filed by Geberit International AG filed Critical Geberit International AG
Priority to CN201611272986.3A priority patent/CN106988399B/en
Publication of EP3170940A1 publication Critical patent/EP3170940A1/en
Publication of EP3170940B1 publication Critical patent/EP3170940B1/en
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Classifications

    • EFIXED CONSTRUCTIONS
    • E03WATER SUPPLY; SEWERAGE
    • E03DWATER-CLOSETS OR URINALS WITH FLUSHING DEVICES; FLUSHING VALVES THEREFOR
    • E03D9/00Sanitary or other accessories for lavatories ; Devices for cleaning or disinfecting the toilet room or the toilet bowl; Devices for eliminating smells
    • E03D9/08Devices in the bowl producing upwardly-directed sprays; Modifications of the bowl for use with such devices ; Bidets; Combinations of bowls with urinals or bidets; Hot-air or other devices mounted in or on the bowl, urinal or bidet for cleaning or disinfecting
    • EFIXED CONSTRUCTIONS
    • E03WATER SUPPLY; SEWERAGE
    • E03DWATER-CLOSETS OR URINALS WITH FLUSHING DEVICES; FLUSHING VALVES THEREFOR
    • E03D11/00Other component parts of water-closets, e.g. noise-reducing means in the flushing system, flushing pipes mounted in the bowl, seals for the bowl outlet, devices preventing overflow of the bowl contents; devices forming a water seal in the bowl after flushing, devices eliminating obstructions in the bowl outlet or preventing backflow of water and excrements from the waterpipe
    • E03D11/02Water-closet bowls ; Bowls with a double odour seal optionally with provisions for a good siphonic action; siphons as part of the bowl
    • E03D11/06Bowls with downwardly-extending flanges for the sake of flushing
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24HFLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H9/00Details
    • F24H9/20Arrangement or mounting of control or safety devices
    • F24H9/2007Arrangement or mounting of control or safety devices for water heaters

Definitions

  • This invention relates to a water closet with a shower function (shower toilet).
  • the inventor has found that there is still a need for improvement with regard to the particle problem, for example if particle filters are to be avoided to avoid the expense of backwashing or replacement or to increase operational safety beyond what is achieved by such particle filters.
  • the object of the invention is to provide an improved shower toilet with good functional reliability.
  • a shower toilet with a water heater for heating shower water, which has a water supply connection and a shower arm line connection, and in which a circulation line for circulating water through the water heater is provided on the water heater, characterized in that the circulation line is a return line between the water supply connection and the shower arm line connection of the water heater and the shower toilet has a control which is designed to carry out automatic descaling, in which a descaling solution circulates through the water heater and the return line.
  • the invention is based on a shower toilet with a water heater, which can in particular be a boiler or instantaneous water heater; it is therefore not aimed exclusively at shower toilets with instantaneous water heaters.
  • a controller should be provided that can perform automatic descaling.
  • This descaling should be particularly effective and efficient in that a return line is provided between the water supply connection and the shower arm line connection of the water heater. As a result, a circulation flow can flow during the descaling program, which also detects and flushes the water heater.
  • a limited amount of decalcifying solution can circulate the water heater over a certain period of time, so to speak Flow several times, whereby the exposure time and the flow or agitation of the water can support the descaling process.
  • the control according to the invention can carry out this circulation process automatically and in a stored sequence. "Automatic" does not mean that the control system automatically recognizes the need for descaling (which is preferred), or that the descaling program starts automatically. As a rule, the user will manually deliver the descaling solution and the descaling program will then run.
  • Descaling is preferably carried out using a decalcifying solution heated by the water heater.
  • the same temperatures as for shower operation are not mandatory and higher temperatures can also be used.
  • a switchable valve is preferably provided in the return line so that it can be interrupted outside the circulation step or outside the decalcification program.
  • a continuous flow heater and a boiler that is to say two water heaters. Both types of water heater have specific advantages, which in combination contribute to the performance of the shower toilet.
  • a continuous-flow heater is quick to react and can supply thermal energy directly during use, i.e. heat water or provide hot water.
  • a boiler can store energy and create a certain amount of hot water before use.
  • a return line according to the invention is preferred, which is provided for both water heaters together, that is to say connects two connections of these water heaters, the others being connected to one another. The circulation then flows through both water heaters and the return line.
  • the circulation of the decalcification solution according to the invention preferably represents only part of a decalcification process. It is preferably additionally provided that the or one of the water heaters delivers decalcification solution via the corresponding shower arm line and the shower arm in order to decalcify line areas lying outside the circulation line path and the shower arm and the shower head. The corresponding proportion of the descaling solution is lost. In this respect, this step can also take place simultaneously with the circulation step, namely that part of the decalcifying solution from the water heater is fed to the circulation line and another part to the shower arm. However, it is preferred to carry out the step described after the circulation step, that is to say when the decalcifying solution has already acted sufficiently within the circulation line and in particular in the water heater (s).
  • both "shower branches" can then be operated in parallel and achieve a particularly good and powerful shower jet result without a common nozzle having to be acted upon as optimal with higher water pressure or a stronger water flow. But even when only one of the two "shower branches" is in operation, the respective nozzle is then supplied with a suitable amount of water.
  • the options described thus relate in particular to requirements of the shower function at such a short interval after a switch-on process that the boiler has not yet reached the correct water temperature. Then a satisfactory shower operation with only one of the two nozzles is possible with the invention.
  • shower arms with two nozzles can be found in many cases, with each nozzle generally having a specific anatomical function.
  • B. either anal cleansing or intimate cleansing.
  • the nozzles are regularly shifted in position along the shower arm and / or differ in terms of the radiation angle; they are also regularly set up specifically for.
  • B. for the anal cleaning a different water jet quality (for example with more pressure) available than for the intimate cleaning.
  • the two nozzles mentioned can also be arranged adjacent.
  • water is preferably released from both water heaters via the respective shower nozzle line and shower nozzle for decalcifying these lines and nozzles, wherein these steps can take place simultaneously or with a time delay.
  • a boiler is provided in addition to a water heater, it can easily happen that the liquid content of the boiler is significantly larger than the amount of decalcifying solution required for the previously described steps of flushing the shower nozzle lines and the shower nozzles. In this case, these steps (or this one step) can be followed by a further circulation step in order to further distribute a remaining stock of "unused" decalcifying solution in the boiler.
  • the descaling program can provide a descaling step for a shower arm cleaning device.
  • the or a water heater, in particular the boiler can deliver decalcifying solution via this shower arm cleaning device and thus decalcify it.
  • It can e.g. B. can be a device for external rinsing of the shower arm or for cleaning inner areas of the shower arm.
  • This step is preferably connected to the previously described step of distributing decalcifying solution in the boiler. Furthermore, this step is preferably provided after decalcifying the shower nozzle (s).
  • a water reservoir is provided in a water supply line of the water heater (in the case of a combination of water heater and boiler) and is connected to the boiler via an overflow.
  • the water tank then serves as a filling tank for the instantaneous water heater, but can also be filled with the boiler at the same time.
  • the water runs over the Overflow from the water reservoir into the boiler.
  • the content of the water reservoir is usually significantly smaller than that of the boiler.
  • the boiler and water storage tank are preferably filled with decalcifying solution. Otherwise, the descaling solution can be distributed in one of the two using the circulation step.
  • the return line described above between the outlet of the heated shower water heater and the corresponding outlet of the boiler preferably has a switchable valve with which the line can be opened and closed.
  • This line also increases flexibility in other ways and outside of a descaling process. It creates z. B. the possibility to let heated water flow in the instantaneous water heater also through the line actually connecting the boiler with the nozzle assigned to it, for example in order to rinse it with heated water before operation of the corresponding nozzle and to displace the cold water contained therein.
  • flushing processes are known per se to the extent that the cold water mentioned is displaced by heated water before the actual function of the nozzle, in order to avoid that the user is first hit by the cold water when showering.
  • the corresponding water can e.g. B. used for cleaning purposes in or on the shower arm or discarded unused.
  • a controller with such a design is provided that after a switch-on process, the nozzle line acted upon by the instantaneous water heater and then the nozzle line to be acted upon by the boiler (in the future) are flushed with water heated in the instantaneous water heater.
  • the water (heated at an early point in time) from the water heater can be used to be led into the boiler, in particular to be branched off as part of the flushing process described. So that the water in the boiler can then be heated up and / or at the Heating by the boiler are better mixed and / or a low-lying cold area of this water is particularly heated.
  • the outlet of the boiler necessarily drains water in the lower area of the boiler in order to be able to use the entire boiler contents, and in general there is a tendency for boilers to form a temperature stratification when heated.
  • the instantaneous water heater is to have a water reservoir in its water supply line, this is preferably connected to the boiler via an overflow.
  • This water reservoir of the instantaneous water heater and the boiler can thus be filled together, namely by filling water first running into the water reservoir of the instantaneous water heater via the water supply line and via the overflow into the boiler.
  • FIG. 1 a fresh water connection of the shower toilet according to the exemplary embodiment is shown at 1 in the upper left.
  • a fresh water supply line 2 the fresh water flows through a particle filter 3 and a control valve 4 as well as a switching valve 5 to a vertical separation section 6 prescribed for hygiene reasons.
  • a vertical separation section 6 prescribed for hygiene reasons.
  • From this line 7 leads to a water tank designated overall by 8. This is divided into two parts, namely a fresh water tank 9 for a water heater 10 on the left and a boiler 11 with an electric heater 12 on the right the line 7 can be filled.
  • the boiler 11 has a heater 12 and a temperature sensor 19.
  • a line 14 connects via a pump 31 an outlet of the fresh water tank 9 to the water heater 10, which has sensors for the water volume flow and the water temperature upstream and downstream of the water heater in the usual way. Downstream of the instantaneous water heater 10, a line 15 carries the water heated during operation through a particle filter 16 to a multi-way valve 17.
  • the boiler 11 has an outlet arranged at the bottom, on which a T-piece is provided.
  • a connection of the T-piece 18 leads via a pump 32 to the shower arm, not shown here, namely to the so-called boost nozzle 20.
  • a connection of the valve 17 also leads to the shower arm, namely to the anal nozzle 21 arranged directly next to the boost nozzle 20 Valve 17 is connected via a return line 22 to a further connection of the T-piece 18.
  • FIG 2 shows a section through a distal end of a shower arm 24 in a bowl rim 23 of a shower toilet according to the invention.
  • This shower toilet has a toilet bowl in the usual way, of which only the section of the bowl rim 23 can be seen.
  • the bowl rim 23 there is an in Figure 2 recognizable channel-like opening, in and behind which a shower device is mounted.
  • two spherical swirling chambers 25 are provided in the central region of the shower arm section, to which reference can be made to the prior art EP 2 628 546 , These bump into theirs Figure 2 a swirled water jet from the upper ends, which passes through the enlarged diameter nozzle openings 20 and 21 and thereby absorbs air from the environment within the shower arm.
  • the two nozzles 20 and 21 are relatively closely adjacent and have a distance of approximately twice the diameter of the nozzle openings (on the upper shower arm surface).
  • the nozzle 20 is referred to as the boost nozzle and the nozzle 21 as the anal nozzle; both are identical in terms of their geometry and are supplied via cables of the same cross-section. These lines are not shown here, but are located in front of and behind the cutting plane.
  • a movable nozzle arm 26 can be seen under the two swirling chambers 25, which carries nozzle openings that are not numbered at its right (distal) end and can be extended to the vaginal shower on request.
  • water is supplied via a channel 27, which extends and acts on the arm 26 against the force of a coil spring (not shown). This part of the shower device is not essential for the invention.
  • channel 27 is a channel 28, which according to Figure 2 communicates with the ventilation of the nozzles 20 and 21.
  • This channel 28 can also lead to washing water which exits via the nozzles 20 and 21 when the shower arm 24 (not shown) is completely retracted.
  • a washing device 29 can be seen, which forms the distal end of the guide of the shower arm 24 and is held in the bowl rim 23.
  • This washing device can be supplied with washing water via a channel 30 and can be used to clean the outer surface of the shower arm 24 when the shower arm 24 is extended and retracted.
  • EP 2 626 478 For this, reference is made to the state of the art EP 2 626 478 ,
  • the two nozzles 20 and 21 arranged on the top of the shower arm do not serve different anatomical purposes, but both (with the same structure, the same direction of radiation and in the immediate vicinity) for anal cleaning.
  • a second nozzle opening is generally provided for vaginal cleaning, which in the present case can be carried out by the nozzle arm 26.
  • the two nozzles 20 and 21 have the advantage of having the hot water supply system out Figure 1 To be able to be acted upon simultaneously, namely the boost nozzle 20 via the T-piece at the outlet of the boiler 11 and the anal nozzle 21 via the valve 17 and the water heater 10. However, they can also be operated individually without their individual Beam characteristics therefore changes.
  • the shower toilet can recognize a user, for example by means of an infrared sensor, which causes the control to switch on the boiler 11, in particular its heater 12. This can also happen if the user is only near the shower toilet. If the start of toilet use is then detected, for example by a touch sensor, the controller can switch on the instantaneous water heater 10 and the pump in line 14 instead of the boiler 11 and adjust the valve 17 so that the heated water flows up to the nozzle line shower nozzle 21 rinses and drives out the cold water. This can be done before the shower arm 24 is extended so that the water emerging from the nozzle 21 fulfills a certain cleaning function with regard to the shower arm.
  • the nozzle line between the boost nozzle 20 and the boiler 11 can be rinsed with hot water via the return line 22 (with the valve 17 in the appropriate position), again using the instantaneous water heater 10 the T-piece 18 z.
  • a third of the volume flow of water can be passed into the boiler 11 in order to ensure improved mixing and in particular warming up of the cold zone in the vicinity of the outlet.
  • the shower arm can be cleaned in the manner known per se when it is extended, for example again with water heated by the instantaneous water heater 10 and with the position of the valve 17 not explained in detail here, as a result of which the water reaches the washing device 29 via the connection 30.
  • both nozzles 20 and 21 can be used, the valve 17 blocking the return line 22 and each nozzle being supplied by the boiler 11 or the instantaneous water heater 10 via its own nozzle line.
  • the anal nozzle 21 can be operated with water heated by the water heater 10, so to speak, as an emergency program and the boost nozzle 20 only after a sufficient water temperature is available in the boiler 11.
  • the exemplary embodiment shows that the separate line routing between the two nozzles and the associated water heaters 10 and 11 enables various advantages, which can be used in a flexible manner. If the return line 22 is present, this also applies to the flushing process described up to the boost nozzle 20 while protecting the energy content in the boiler 11.
  • An electronic control is responsible for the functions shown so far, which is not shown in the figures, but is integrated in the shower toilet. According to the invention, this control has a descaling program in order to carry out automatic descaling. This is explained in more detail below.
  • the water tank 8 is filled with a suitable decalcifying solution, which is then located both in the fresh water tank 9 and in the boiler 11.
  • a technology assembly is descaled, namely in particular the continuous flow heater 10, the particle filter 16, the multi-way valve 17, the T-piece 18 and of course the fresh water tank 9 and the boiler 11 including heater 12 and temperature sensor 19.
  • FIG 1 shown in line 14 and actually intended for the anal nozzle 21 pump 31 operated, the multi-way valve 17 switched so that the Lines 14 and 15 supplied decalcifying solution is continued via line 22, and the pump 32 assigned to the boost nozzle 20 (in Figure 1 blocked to the right of the T-piece 18).
  • a circulation flow through the boiler, the instantaneous water heater and the return line 22 is thus generated here.
  • the pump 31 can run for one minute and then pause for eight minutes. B. repeated three times.
  • a second program step the anal nozzle 21 and the nozzle line leading to it are decalcified.
  • the multi-way valve 17 is switched so that the decalcifying solution is expelled through the anal nozzle 21 and does not get into the return line 22.
  • this program step further benefits the decalcification of the lines 14 and 15, the particle filter 16, the instantaneous water heater 10 and of course the pump 31.
  • the corresponding parts of the multi-way valve 17 and the line sections leading downstream to the anal nozzle 21 and the anal nozzle 21 are descaled. So z. B. the existing in the fresh water tank 9 of decalcifying solution are used up, the inventory in the boiler is not touched.
  • the boost nozzle 20 and the shower line leading to it, including the pump 32 can then be decalcified.
  • this pump 32 is operated, draws decalcifying solution from the boiler 11 and expels it via the boost nozzle 20, for example for five seconds.
  • the multi-way valve 17 is adjusted accordingly and decalcifying solution from the fresh water tank 9 via the pump 31 and the lines 14 and 15 is then in a Figure 1 supply line, not shown, and finally via channel 30 ( Figure 2 ) supplied to the washing device 29.
  • the contents of the fresh water tank 9 can essentially be used up again here.
  • the boost nozzle 20 can then be descaled again, as has already been described. Since there is still a descaling solution in the boiler 11 in this situation, a repetition is advisable.
  • the descaling solution is redistributed in the system, but significantly diluted.
  • the fresh water tank 9 can now be emptied first via the anal nozzle 21 and thus therefore via the lines 14 and 15 and the multi-way valve 17.
  • the content of the boiler 11 can be emptied via the boost nozzle 20, that is to say via the T-piece 18 and the pump 32. Then, twelfth, both tanks, i.e. fresh water tank 9 and boiler 11, are refilled with water.
  • the fresh water tank 9 can then be emptied again, but this time via the shower arm cleaning 29, ie again via lines 14 and 15 and the multi-way valve 17. Then, the boiler is emptied again fourteenthly, as already described per se. Fifteen, both tanks are freshly filled. Depending on the needs and aggressiveness of the original decalcifying solution, the rinsing steps can of course be repeated.
  • the decalcification program is characterized by various circulation steps, which first improve the utilization of the decalcification solution, but also the thoroughness of the decalcification itself, but can subsequently also serve to distribute residual amounts of decalcification solution in the system.
  • circulation steps flushing through both the boiler 11 and the instantaneous water heater 10 is possible.
  • the nozzles 20 and 21, the shower lines assigned to them and also the shower arm cleaning 29 can be decalcified and rinsed in special descaling steps, then without circulation.

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  • Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Water Supply & Treatment (AREA)
  • Molecular Biology (AREA)
  • Epidemiology (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Bidet-Like Cleaning Device And Other Flush Toilet Accessories (AREA)

Description

Diese Erfindung betrifft ein Wasserklosett mit Duschfunktion (Dusch-WC).This invention relates to a water closet with a shower function (shower toilet).

Solche Geräte sind seit einigen Jahrzehnten bekannt und erfahren in den letzten Jahren auch in Europa zunehmende Aufmerksamkeit. Die technische Entwicklung betrifft unter vielen anderen Gesichtspunkten auch die Warmwasserbereitung. Dazu sind grundsätzlich Boiler, also Warmwasserspeicher mit Heizung, und Durchlauferhitzer bekannt, die jeweils spezifische Vor- und Nachteile aufweisen.Such devices have been known for a few decades and have received increasing attention in Europe in recent years. Technical development also affects water heating from many other points of view. Basically, boilers, i.e. hot water tanks with heating, and instantaneous water heaters are known, each of which has specific advantages and disadvantages.

Bei Dusch-WCs mit Durchlauferhitzern sind bereits Partikelfilter im Wasserleitungssystem vorgesehen worden, um Funktionsbeeinträchtigungen durch eingeschwemmte Partikel, insbesondere Verkalkungsrückstände in einem Duschkopf oder Duscharm zu verhindern. Beispielhaft kann verwiesen werden auf die europäische Patentanmeldung EP 11 004 229 und den im Prüfungsverfahren zu dieser Anmeldung zitierten Stand der Technik sowie WO 2015/143571 A1 und EP 2 687 641 A1 .In shower toilets with instantaneous water heaters, particle filters have already been provided in the water pipe system in order to prevent functional impairments caused by washed-in particles, in particular limescale deposits in a shower head or shower arm. For example, reference can be made to the European patent application EP 11 004 229 and the state of the art cited in the examination procedure for this application and WO 2015/143571 A1 and EP 2 687 641 A1 ,

Der Erfinder hat festgestellt, dass weiterhin Verbesserungsbedarf hinsichtlich der Partikelproblematik besteht, etwa wenn Partikelfilter zur Vermeidung des Aufwandes für das Rückspülen oder Austauschen vermieden werden sollen oder zur Erhöhung der Betriebssicherheit über das durch solche Partikelfilter erreichte Maß hinaus.The inventor has found that there is still a need for improvement with regard to the particle problem, for example if particle filters are to be avoided to avoid the expense of backwashing or replacement or to increase operational safety beyond what is achieved by such particle filters.

Davon ausgehend liegt der Erfindung die Aufgabe zugrunde, ein verbessertes Dusch-WC mit einer guten Funktionssicherheit anzugeben.Based on this, the object of the invention is to provide an improved shower toilet with good functional reliability.

Diese Aufgabe wird gelöst durch ein Dusch-WC mit einem Wassererhitzer zum Erwärmen von Duschwasser, welcher einen Wasserversorgungsanschluss und einen Duscharmleitungsanschluss aufweist, und bei dem an dem Wassererhitzer eine Zirkulationsleitung zum Zirkulieren von Wasser durch den Wassererhitzer vogesehen ist, dadurch gekennzeichnet, dass die Zirkulationsleitung eine Rückführleitung zwischem dem Wasserversorgungsanschluss und dem Duscharmleitungsanschluss des Wassererhitzers ist und das Dusch-WC eine Steuerung aufweist, die dazu ausgelegt ist, eine automatische Entkalkung durchzuführen, bei welcher eine Entkalkungslösung durch den Wassererhitzer und die Rückführleitung zirkuliert.This object is achieved by a shower toilet with a water heater for heating shower water, which has a water supply connection and a shower arm line connection, and in which a circulation line for circulating water through the water heater is provided on the water heater, characterized in that the circulation line is a return line between the water supply connection and the shower arm line connection of the water heater and the shower toilet has a control which is designed to carry out automatic descaling, in which a descaling solution circulates through the water heater and the return line.

Bevorzugte Ausgestaltungen sind Gegenstand der abhängigen Ansprüche und werden im Folgenden neben der Erfindung in ihrer allgemeinsten Form näher erläutert.Preferred embodiments are the subject of the dependent claims and are explained in more detail below in addition to the invention in its most general form.

Die Erfindung geht von einem Dusch-WC mit einem Wassererhitzer aus, wobei es sich insbesondere um einen Boiler oder Durchlauferhitzer handeln kann; sie richtet sich also nicht ausschließlich auf Dusch-WCs mit Durchlauferhitzern. Bei einem solchen Dusch-WC soll eine Steuerung vorgesehen sein, die eine automatische Entkalkung durchführen kann. Diese Entkalkung soll dadurch besonders wirksam und effizient sein, dass hierfür eine Rückführleitung zwischen dem Wasserversorgungsanschluss und dem Duscharmleitungsanschluss des Wassererhitzers vorgesehen ist. Hierdurch kann während des Entkalkungsprogramms eine Zirkulationsströmung fließen, die den Wassererhitzer miterfasst und durchspült.The invention is based on a shower toilet with a water heater, which can in particular be a boiler or instantaneous water heater; it is therefore not aimed exclusively at shower toilets with instantaneous water heaters. In such a shower toilet, a controller should be provided that can perform automatic descaling. This descaling should be particularly effective and efficient in that a return line is provided between the water supply connection and the shower arm line connection of the water heater. As a result, a circulation flow can flow during the descaling program, which also detects and flushes the water heater.

In dieser Weise kann also eine mehrfache Einwirkung bzw. eine langanhaltende Einwirkung einer begrenzten Menge Entkalkungslösung auf den Wassererhitzer sichergestellt werden. Das ist von Interesse, weil erfahrungsgemäß gerade in besonders stark erwärmten Teilen einer Warmwasserleitung eines Dusch-WCs Verkalkungsprobleme auftreten. Die beschriebene Funktion ergibt sich dabei nur in Verbindung mit der entsprechenden Rückführleitung. Bei einem konventionellen Leitungsaufbau eines Dusch-WCs können zwar unter Umständen Vorkehrungen dafür getroffen werden, Entkalkungslösung z. B. in einen Boiler einzufüllen; diese Entkalkungslösung kann dann aber, wenn eine Strömung gewünscht ist, lediglich über die Duscharmleitung und den Duscharm oder den Duschkopf abgeführt werden und geht dann verloren.In this way, a multiple action or a long-term action of a limited amount of decalcifying solution on the water heater can be ensured. This is of interest because experience has shown that calcification problems occur especially in particularly hot parts of a hot water pipe in a shower toilet. The described function only results in connection with the corresponding return line. In a conventional line structure of a shower toilet, precautions can be taken under certain circumstances, e.g. B. fill in a boiler; however, if a flow is desired, this decalcifying solution can only be discharged via the shower arm line and the shower arm or the shower head and is then lost.

Erfindungsgemäß kann aber eine begrenzte Menge Entkalkungslösung zirkulierenderweise den Wassererhitzer über einen gewissen Zeitraum und sozusagen mehrfach durchströmen, wobei die Einwirkzeit und die Strömung bzw. Agitation des Wassers den Entkalkungsvorgang unterstützen können. Die erfindungsgemäße Steuerung kann diesen Zirkulationsprozess in einem gespeicherten Ablauf und insoweit automatisch durchführen. "Automatisch" bedeutet hierbei nicht, dass die Steuerung zwingend den Bedarf an einer Entkalkung selbsttätig erkennt (was aber bevorzugt ist) oder gar das Entkalkungsprogramm selbsttätig startet. Im Regelfall wird der Benutzer die Entkalkungslösung manuell zuführen und das Entkalkungsprogramm danach ablaufen.According to the invention, however, a limited amount of decalcifying solution can circulate the water heater over a certain period of time, so to speak Flow several times, whereby the exposure time and the flow or agitation of the water can support the descaling process. The control according to the invention can carry out this circulation process automatically and in a stored sequence. "Automatic" does not mean that the control system automatically recognizes the need for descaling (which is preferred), or that the descaling program starts automatically. As a rule, the user will manually deliver the descaling solution and the descaling program will then run.

Vorzugsweise erfolgt das Entkalken mit durch den Wassererhitzer erwärmter Entkalkungslösung. Dabei sind nicht zwingend die gleichen Temperaturen wie für den Duschbetrieb einzuhalten und es können insbesondere auch höhere Temperaturen Verwendung finden.Descaling is preferably carried out using a decalcifying solution heated by the water heater. The same temperatures as for shower operation are not mandatory and higher temperatures can also be used.

Vorzugsweise ist in der Rückführleitung ein schaltbares Ventil vorgesehen, sodass diese außerhalb des Zirkulationsschritts bzw. außerhalb des Entkalkungsprogramms unterbrochen werden kann.A switchable valve is preferably provided in the return line so that it can be interrupted outside the circulation step or outside the decalcification program.

Nach einer weiteren bevorzugten Ausgestaltung sind ein Durchlauferhitzer und ein Boiler, also zwei Wassererhitzer, vorgesehen. Beide Wassererhitzertypen haben spezifische Vorteile, die in Kombination zur Leistungsfähigkeit des Dusch-WCs beitragen. Insbesondere ist ein Durchlauferhitzer reaktionsschnell und kann während der Benutzung direkt Wärmeenergie nachführen, also Wasser erwärmen bzw. Warmwasser bereitstellen. Im Unterschied dazu kann ein Boiler Energie bevorraten und einen gewissen Warmwasservorrat schon vor der Benutzung anlegen. Zu weiteren Einzelheiten der sinnvollen Kombination eines Durchlauferhitzers und eines Boilers in einem Dusch-WC wird zunächst verwiesen auf den Stand der Technik EP 2 357 423 A1 , wo ein Boiler als Energiespeicher mit einem Durchlauferhitzer kombiniert ist. Beide sind in Reihe geschaltet und dienen zur Verlängerung der Duschzeit bei einer bestimmten vorgegebenen Temperatur des Wassers. Konkret werden dabei relativ hohe Wassertemperaturen erzeugt und das erwärmte Wasser vor der Zuführung zum Duscharm selbst mit Kaltwasser vermischt, um die gewünschte Temperatur einzustellen.According to a further preferred embodiment, a continuous flow heater and a boiler, that is to say two water heaters, are provided. Both types of water heater have specific advantages, which in combination contribute to the performance of the shower toilet. In particular, a continuous-flow heater is quick to react and can supply thermal energy directly during use, i.e. heat water or provide hot water. In contrast, a boiler can store energy and create a certain amount of hot water before use. For further details of the sensible combination of a instantaneous water heater and a boiler in a shower toilet, reference is first made to the prior art EP 2 357 423 A1 , where a boiler is combined with an instantaneous water heater to store energy. Both are connected in series and serve to extend the shower time at a certain predetermined temperature of the water. Specifically, relatively high water temperatures are generated and the heated one Water is mixed with cold water before it is fed to the shower arm in order to set the desired temperature.

Ferner wird verwiesen auf die kurze Zeit vor der vorliegenden Anmeldung durch dieselbe Anmelderin eingereichte europäische Patentanmeldung EP 15 184 518 .Reference is also made to the European patent application filed by the same applicant shortly before the present application EP 15 184 518 ,

Jedenfalls ist bei dieser Kombination zweier Wassererhitzer eine erfindungsgemäße Rückführleitung bevorzugt, die für beide Wassererhitzer gemeinsam vorgesehen ist, also zwei Anschlüsse dieser Wassererhitzer verbindet, wobei die jeweils anderen untereinander verbunden sind. Die Zirkulation durchströmt dann beide Wassererhitzer und die Rückführleitung.In any case, with this combination of two water heaters, a return line according to the invention is preferred, which is provided for both water heaters together, that is to say connects two connections of these water heaters, the others being connected to one another. The circulation then flows through both water heaters and the return line.

Die erfindungsgemäße Zirkulation der Entkalkungslösung stellt bevorzugt nur einen Teil eines Entkalkungsablaufs dar. Vorzugsweise ist zusätzlich vorgesehen, dass der oder einer der Wassererhitzer Entkalkungslösung über die entsprechende Duscharmleitung und den Duscharm abgibt, um außerhalb des Zirkulationsleitungsweges liegende Leitungsbereiche und den Duscharm sowie den Duschkopf zu entkalken. Der entsprechende Anteil der Entkalkungslösung geht dabei verloren. Insoweit kann zwar dieser Schritt auch gleichzeitig mit dem Zirkulationsschritt ablaufen, indem nämlich ein Teil der Entkalkungslösung aus dem Wassererhitzer dem Zirkulationsleitungsweg und ein anderer Teil dem Duscharm zugeführt wird. Bevorzugt ist allerdings, den beschriebenen Schritt nach dem Zirkulationsschritt durchzuführen, also wenn die Entkalkungslösung bereits ausreichend innerhalb des Zirkulationsleitungsweges und insbesondere in dem oder den Wassererhitzer(n) eingewirkt hat.The circulation of the decalcification solution according to the invention preferably represents only part of a decalcification process. It is preferably additionally provided that the or one of the water heaters delivers decalcification solution via the corresponding shower arm line and the shower arm in order to decalcify line areas lying outside the circulation line path and the shower arm and the shower head. The corresponding proportion of the descaling solution is lost. In this respect, this step can also take place simultaneously with the circulation step, namely that part of the decalcifying solution from the water heater is fed to the circulation line and another part to the shower arm. However, it is preferred to carry out the step described after the circulation step, that is to say when the decalcifying solution has already acted sufficiently within the circulation line and in particular in the water heater (s).

Bei einer in der bereits zitierten EP 15 184 518 dargestellten bevorzugten Ausgestaltung sind nicht nur zwei Wassererhitzer vorgesehen, sondern auch jeweils eine eigene zugeordnete Duschdüse für jeden Wassererhitzer, also z. B. eine Duschdüse für einen Boiler und eine weitere für einen Durchlauferhitzer. Dabei sind der jeweilige Wassererhitzer und die zugeordnete Duschdüse durch eine eigene Düsenleitleitung miteinander verbunden.With one in the already cited EP 15 184 518 Preferred embodiment shown are not only provided two water heaters, but also each have their own associated shower nozzle for each water heater, so z. B. a shower nozzle for a boiler and another for a water heater. The respective water heater and the associated shower nozzle are connected to each other by a separate nozzle guide.

Damit ergibt sich die Möglichkeit, die Duschfunktion wahlweise mit beiden Wassererhitzern, Düsenleitungen und Düsen oder nur mit einem Satz davon zu betreiben, also sozusagen nur mit einem "Duschast" (aus Boiler oder Durchlauferhitzer mit zugehöriger Düsenleitung und Düse).This gives you the option of operating the shower function with either two water heaters, nozzle lines and nozzles or only with one set of them, so to speak only with a "shower branch" (from a boiler or instantaneous water heater with associated nozzle line and nozzle).

Dabei können z. B. bei beschränkter elektrischer Leistung, also z. B. bei gleichzeitiger Verfügbarkeit nur des Durchlauferhitzers oder des Boilers, trotzdem variabel gute Duschstrahlergebnisse erzielt werden. Denn in einer Situation mit aufgewärmtem Boiler können dann beide "Duschäste" parallel betrieben werden und erzielen ein besonders gutes und leistungsfähiges Duschstrahlergebnis, ohne dass eine gemeinsame Düse deswegen mit höherem Wasserdruck oder stärkerer Wasserströmung als optimal beaufschlagt werden muss. Aber auch bei Betrieb nur eines der beiden "Duschäste" wird die jeweilige Düse dann mit einer geeigneten Wassermenge versorgt. Das gilt etwa bei noch nicht aufgewärmtem Boiler und Benutzung des Durchlauferhitzers oder bei Nachheizen des Boilers im Duschbetrieb und dabei ausgeschaltetem Durchlauferhitzer, also verringerter Wassertemperatur.Here, for. B. with limited electrical power, so z. B. with simultaneous availability of only the instantaneous water heater or the boiler, nonetheless variably good shower spray results can be achieved. Because in a situation with a warmed-up boiler, both "shower branches" can then be operated in parallel and achieve a particularly good and powerful shower jet result without a common nozzle having to be acted upon as optimal with higher water pressure or a stronger water flow. But even when only one of the two "shower branches" is in operation, the respective nozzle is then supplied with a suitable amount of water. This applies, for example, if the boiler has not yet been warmed up and the instantaneous water heater is used, or if the boiler is reheated in the shower mode and the instantaneous water heater is switched off, i.e. the water temperature is reduced.

Die beschriebenen Möglichkeiten betreffen also insbesondere Anforderungen der Duschfunktion in einem so kurzen Zeitabstand nach einem Einschaltvorgang, dass der Boiler noch nicht bei der richtigen Wassertemperatur angekommen ist. Dann ist mit der Erfindung immerhin ein befriedigender Duschbetrieb mit nur einer der beiden Düsen möglich.The options described thus relate in particular to requirements of the shower function at such a short interval after a switch-on process that the boiler has not yet reached the correct water temperature. Then a satisfactory shower operation with only one of the two nozzles is possible with the invention.

Im Stand der Technik sind vielfach Duscharme mit zwei Düsen anzutreffen, wobei in aller Regel jede Düse eine spezifische anatomische Funktion hat, also z. B. entweder der Analreinigung oder der Intimreinigung dient. Dementsprechend sind die Düsen regelmäßig entlang dem Duscharm in der Position versetzt und/oder hinsichtlich des Abstrahlwinkels verschieden; sie sind ferner regelmäßig spezifisch darauf eingerichtet, z. B. für die Analreinigung eine andere Wasserstrahlqualität (etwa mit mehr Druck) zur Verfügung zu stellen als für die Intimreinigung. Im vorliegenden Fall können aber die beiden erwähnten Düsen auch benachbart angeordnet sein.In the prior art, shower arms with two nozzles can be found in many cases, with each nozzle generally having a specific anatomical function. B. either anal cleansing or intimate cleansing. Accordingly, the nozzles are regularly shifted in position along the shower arm and / or differ in terms of the radiation angle; they are also regularly set up specifically for. B. for the anal cleaning a different water jet quality (for example with more pressure) available than for the intimate cleaning. In the present In this case, however, the two nozzles mentioned can also be arranged adjacent.

Bei zwei vorhandenen Wassererhitzern und jeweils zugeordneten Duschdüsenleitungen und Duschdüsen ist vorzugsweise eine Wasserabgabe beider Wassererhitzer über die jeweilige Duschdüsenleitung und Duschdüse zum Entkalken dieser Leitungen und Düsen vorgesehen, wobei diese Schritte gleichzeitig oder auch zeitversetzt ablaufen können.In the case of two existing water heaters and respectively associated shower nozzle lines and shower nozzles, water is preferably released from both water heaters via the respective shower nozzle line and shower nozzle for decalcifying these lines and nozzles, wherein these steps can take place simultaneously or with a time delay.

Wenn neben einem Durchlauferhitzer ein Boiler vorgesehen ist, kann es leicht dazu kommen, dass der Flüssigkeitsinhalt des Boilers deutlich größer ist als die für die zuvor beschriebenen Schritte des Durchspülens der Duschdüsenleitungen und der Duschdüsen erforderliche Menge an Entkalkungslösung. In diesem Fall kann diesen Schritten (oder diesem einen Schritt) ein weiterer Zirkulationsschritt folgen, um einen Restvorrat "unverbrauchter" Entkalkungslösung in dem Boiler weiter zu verteilen.If a boiler is provided in addition to a water heater, it can easily happen that the liquid content of the boiler is significantly larger than the amount of decalcifying solution required for the previously described steps of flushing the shower nozzle lines and the shower nozzles. In this case, these steps (or this one step) can be followed by a further circulation step in order to further distribute a remaining stock of "unused" decalcifying solution in the boiler.

Weiterhin kann das Entkalkungsprogramm einen Entkalkungsschritt für eine Duscharmreinigungseinrichtung vorsehen. Dabei kann der oder ein Wassererhitzer, insbesondere der Boiler, Entkalkungslösung über diese Duscharmreinigungseinrichtung abgeben und diese damit entkalken. Es kann sich z. B. um eine Einrichtung zum äußeren Abspülen des Duscharms oder auch zum Reinigen innerer Bereiche des Duscharms handeln. Vorzugsweise ist dieser Schritt an den zuvor geschilderten Schritt der Verteilung von Entkalkungslösung in dem Boiler angeschlossen. Ferner ist dieser Schritt vorzugsweise nach dem Entkalken der Duschdüse(n) vorgesehen.Furthermore, the descaling program can provide a descaling step for a shower arm cleaning device. The or a water heater, in particular the boiler, can deliver decalcifying solution via this shower arm cleaning device and thus decalcify it. It can e.g. B. can be a device for external rinsing of the shower arm or for cleaning inner areas of the shower arm. This step is preferably connected to the previously described step of distributing decalcifying solution in the boiler. Furthermore, this step is preferably provided after decalcifying the shower nozzle (s).

Bei einer weiteren bevorzugten Ausgestaltung ist in einer Wasserzuführleitung des Durchlauferhitzers (bei einer Kombination aus Durchlauferhitzer und Boiler) ein Wasserspeicher vorgesehen und mit dem Boiler über einen Überlauf verbunden. Der Wasserspeicher dient dann als Befüllspeicher für den Durchlauferhitzer, kann aber gleichzeitig mit dem Boiler befüllt werden. Dazu läuft das Wasser über den Überlauf aus dem Wasserspeicher in den Boiler. Der Wasserspeicher ist im Regelfall im Inhalt deutlich kleiner als der Boiler. Beim Entkalken werden vorzugsweise der Boiler und der Wasserspeicher gemeinsam mit Entkalkungslösung befüllt. Anderenfalls kann aber durch den Zirkulationsschritt Entkalkungslösung in einem der beiden verteilt werden.In a further preferred embodiment, a water reservoir is provided in a water supply line of the water heater (in the case of a combination of water heater and boiler) and is connected to the boiler via an overflow. The water tank then serves as a filling tank for the instantaneous water heater, but can also be filled with the boiler at the same time. The water runs over the Overflow from the water reservoir into the boiler. The content of the water reservoir is usually significantly smaller than that of the boiler. When decalcifying, the boiler and water storage tank are preferably filled with decalcifying solution. Otherwise, the descaling solution can be distributed in one of the two using the circulation step.

Die vorstehend beschriebene Rückführleitung zwischen dem für das erwärmte Wasser vorgesehenen Ausgang des Duschlauferhitzers und dem entsprechenden Ausgang des Boilers weist vorzugsweise ein schaltbares Ventil auf, mit dem die Leitung geöffnet und geschlossen werden kann. Diese Leitung erhöht damit auch in anderer Hinsicht und außerhalb eines Entkalkungsvorgangs die Flexibilität. Sie schafft z. B. die Möglichkeit, in dem Durchlauferhitzer erwärmtes Wasser auch durch die eigentlich den Boiler mit der ihm zugeordneten Düse verbindende Leitung strömen zu lassen, etwa um diesen vor einem Betrieb der entsprechende Düse mit erwärmtem Wasser zu spülen und das darin enthaltene erkaltete Wasser zu verdrängen. Solche Spülvorgänge sind an sich insoweit bekannt, als das erwähnte kalte Wasser vor der eigentlichen Funktion der Düse durch erwärmtes verdrängt wird, um zu vermeiden, dass der Benutzer beim Duschen zunächst vom kalten Wasser getroffen wird. Während des Spülvorgangs kann das entsprechende Wasser z. B. zu Reinigungszwecken in oder an dem Duscharm eingesetzt werden oder ungenutzt verworfen werden.The return line described above between the outlet of the heated shower water heater and the corresponding outlet of the boiler preferably has a switchable valve with which the line can be opened and closed. This line also increases flexibility in other ways and outside of a descaling process. It creates z. B. the possibility to let heated water flow in the instantaneous water heater also through the line actually connecting the boiler with the nozzle assigned to it, for example in order to rinse it with heated water before operation of the corresponding nozzle and to displace the cold water contained therein. Such flushing processes are known per se to the extent that the cold water mentioned is displaced by heated water before the actual function of the nozzle, in order to avoid that the user is first hit by the cold water when showering. During the rinsing process, the corresponding water can e.g. B. used for cleaning purposes in or on the shower arm or discarded unused.

Insbesondere ist bevorzugt, dass eine Steuerung mit einer solchen Auslegung vorgesehen ist, dass nach einem Einschaltvorgang zunächst die von dem Durchlauferhitzer beaufschlagte Düsenleitung und danach die eigentlich (zukünftig) von dem Boiler zu beaufschlagende Düsenleitung mit in dem Durchlauferhitzer erwärmtem Wasser gespült werden.In particular, it is preferred that a controller with such a design is provided that after a switch-on process, the nozzle line acted upon by the instantaneous water heater and then the nozzle line to be acted upon by the boiler (in the future) are flushed with water heated in the instantaneous water heater.

Ferner kann das (zu einem frühen Zeitpunkt) erwärmte Wasser aus dem Durchlauferhitzer dazu genutzt werden, in den Boiler geleitet zu werden, insbesondere im Rahmen des beschriebenen Spülvorgangs dazu abgezweigt zu werden. Damit kann dann das Wasser in dem Boiler verstärkt erwärmt werden und/oder bei der Erwärmung durch den Boiler besser durchmischt werden und/oder ein tiefgelegener Kaltbereich dieses Wassers besonders erwärmt werden. Zu letzterem Aspekt ist anzumerken, dass der Ausgang des Boilers zwingend Wasser im unteren Bereich des Boilers abführt, um den gesamten Boilerinhalt nutzen zu können, und bei Boilern generell die Tendenz besteht, dass sich beim Erwärmen eine Temperaturschichtung ausbildet.Furthermore, the water (heated at an early point in time) from the water heater can be used to be led into the boiler, in particular to be branched off as part of the flushing process described. So that the water in the boiler can then be heated up and / or at the Heating by the boiler are better mixed and / or a low-lying cold area of this water is particularly heated. Regarding the latter aspect, it should be noted that the outlet of the boiler necessarily drains water in the lower area of the boiler in order to be able to use the entire boiler contents, and in general there is a tendency for boilers to form a temperature stratification when heated.

Wenn der Durchlauferhitzer einen Wasserspeicher in seiner Wasserzuführleitung aufweisen soll, ist dieser vorzugsweise über einen Überlauf mit dem Boiler verbunden. Damit können dieser Wasserspeicher des Durchlauferhitzers und der Boiler gemeinsam befüllt werden, nämlich indem über die Wasserzuführleitung Füllwasser zunächst in den Wasserspeicher des Durchlauferhitzers läuft und über den Überlauf in den Boiler.If the instantaneous water heater is to have a water reservoir in its water supply line, this is preferably connected to the boiler via an overflow. This water reservoir of the instantaneous water heater and the boiler can thus be filled together, namely by filling water first running into the water reservoir of the instantaneous water heater via the water supply line and via the overflow into the boiler.

Es wurde bereits angesprochen, dass bei einer für den Boiler zu frühzeitigen Anforderung von erwärmtem Duschwasser zunächst nur der Duschast des Durchlauferhitzers genutzt wird. Vorzugsweise werden dann, wenn der Boiler erwärmtes Wasser bereitstellen kann, beide Duschäste benutzt, um eine besonders intensive Duschfunktion zu ermöglichen. Dabei wird der Durchlauferhitzers betrieben und der Wärmevorrat im Boiler genutzt. Natürlich kann dies von einer entsprechenden Bedienung des Benutzers abhängig gemacht werden. Als zusätzlicher oder auch als alternativer Vorteil der Erfindung kommt in Betracht, nach Erschöpfung des Warmwasservorrats im Boiler (oder nach jedenfalls zu weit abgesunkener Temperatur darin) nur noch den Duschast des Durchlauferhitzers zu verwenden. Diese Möglichkeit kommt natürlich auch unabhängig von den erläuterten Vorgängen bei der frühen Anforderung der Duschfunktion in Betracht.It has already been mentioned that if heated shower water is requested too early for the boiler, only the shower branch of the instantaneous water heater is initially used. If the boiler can provide heated water, both shower branches are preferably used in order to enable a particularly intensive shower function. The instantaneous water heater is operated and the heat reserve in the boiler is used. Of course, this can be made dependent on an appropriate operation of the user. As an additional or alternative advantage of the invention, it is possible to use only the shower branch of the instantaneous water heater after the hot water supply in the boiler has been exhausted (or after the temperature in it has dropped too far). Of course, this possibility also comes into consideration independently of the processes explained in the early request for the shower function.

Im Folgenden wird die Erfindung anhand eines Ausführungsbeispiels näher erläutert, wobei die einzelnen Merkmale auch in anderen Kombinationen erfindungswesentlich sein können und sich, wie bereits erwähnt, implizit auf alle Kategorien der Erfindung beziehen.

Figur 1
zeigt ein Blockschaltdiagramm zur Erläuterung des Ausführungsbeispiels und
Figur 2
zeigt im Schnitt ein distales Ende eines Duscharms zur Erläuterung des Ausführungsbeispiels.
The invention is explained in more detail below using an exemplary embodiment, the individual features also being essential to the invention in other combinations and, as already mentioned, implicitly relating to all categories of the invention.
Figure 1
shows a block circuit diagram for explaining the embodiment and
Figure 2
shows in section a distal end of a shower arm to explain the embodiment.

In Figur 1 ist links oben ein summarisch mit 1 bezeichneter Frischwasseranschluss des Dusch-WCs gemäß dem Ausführungsbeispiel eingezeichnet. Von einer Frischwasserzuleitung 2 aus strömt das Frischwasser durch ein Partikelfilter 3 und ein Regelventil 4 sowie ein Schaltventil 5 zu einer aus Hygienegründen vorgeschriebenen vertikalen Trennstrecke 6. Von dieser führt eine Leitung 7 zu einem insgesamt mit 8 bezeichneten Wassertank. Dieser ist in zwei Teile aufgeteilt, nämlich links einen Frischwassertank 9 für einen Durchlauferhitzer 10 und rechts einen Boiler 11 mit einer elektrischen Heizung 12. Der Frischwassertank 9 und der Boiler 11 sind durch einen Überlauf 13 miteinander verbunden, sodass beide gemeinsam über den Frischwasseranschluss 1 und die Leitung 7 befüllt werden können. Der Boiler 11 weist eine Heizung 12 und einen Temperaturfühler 19 auf.In Figure 1 a fresh water connection of the shower toilet according to the exemplary embodiment is shown at 1 in the upper left. From a fresh water supply line 2, the fresh water flows through a particle filter 3 and a control valve 4 as well as a switching valve 5 to a vertical separation section 6 prescribed for hygiene reasons. From this line 7 leads to a water tank designated overall by 8. This is divided into two parts, namely a fresh water tank 9 for a water heater 10 on the left and a boiler 11 with an electric heater 12 on the right the line 7 can be filled. The boiler 11 has a heater 12 and a temperature sensor 19.

Eine Leitung 14 verbindet über eine Pumpe 31 einen Ausgang des Frischwassertanks 9 mit dem Durchlauferhitzer 10, der in der üblichen Weise Sensoren für den Wasservolumenstrom und die Wassertemperatur stromaufwärts und stromabwärts von dem Durchlauferhitzer aufweist. Stromabwärts von dem Durchlauferhitzer 10 führt eine Leitung 15 das im Betrieb erwärmte Wasser weiter durch ein Partikelfilter 16 zu einem Mehrwegeventil 17.A line 14 connects via a pump 31 an outlet of the fresh water tank 9 to the water heater 10, which has sensors for the water volume flow and the water temperature upstream and downstream of the water heater in the usual way. Downstream of the instantaneous water heater 10, a line 15 carries the water heated during operation through a particle filter 16 to a multi-way valve 17.

Andererseits verfügt der Boiler 11 über einen unten angeordneten Auslass, an dem ein T-Stück vorgesehen ist. Nach rechts führt ein Anschluss des T-Stücks 18 über eine Pumpe 32 zum hier nicht eingezeichneten Duscharm, nämlich zu dessen sogenannter Boost-Düse 20.On the other hand, the boiler 11 has an outlet arranged at the bottom, on which a T-piece is provided. To the right, a connection of the T-piece 18 leads via a pump 32 to the shower arm, not shown here, namely to the so-called boost nozzle 20.

Ein Anschluss des Ventils 17 führt ebenfalls zum Duscharm, nämlich zu dessen direkt neben der Boost-Düse 20 angeordneter Analdüse 21. Schließlich ist das Ventil 17 über eine Rückführleitung 22 mit einem weiteren Anschluss des T-Stücks 18 verbunden.A connection of the valve 17 also leads to the shower arm, namely to the anal nozzle 21 arranged directly next to the boost nozzle 20 Valve 17 is connected via a return line 22 to a further connection of the T-piece 18.

Figur 2 zeigt einen Schnitt durch ein distales Ende eines Duscharms 24 in einem Schüsselrand 23 eines erfindungsgemäßen Dusch-WCs. Dieses Dusch-WC hat in üblicher Weise eine WC-Schüssel, von der nur der Ausschnitt des Schüsselrandes 23 zu sehen ist. In dem Schüsselrand 23 existiert eine in Figur 2 erkennbare kanalartige Öffnung, in und hinter der eine Duscheinrichtung montiert ist. Diese umfasst den Duscharm 24, der in Figur 2 von links oben bis rechts unten reicht und an seinem rechten Ende (distalen Ende) die bereits erwähnten beiden Düsen 20 und 21 aufweist. Figure 2 shows a section through a distal end of a shower arm 24 in a bowl rim 23 of a shower toilet according to the invention. This shower toilet has a toilet bowl in the usual way, of which only the section of the bowl rim 23 can be seen. In the bowl rim 23 there is an in Figure 2 recognizable channel-like opening, in and behind which a shower device is mounted. This includes the shower arm 24, which in Figure 2 extends from top left to bottom right and has at its right end (distal end) the two nozzles 20 and 21 already mentioned.

Auch wenn der genaue Aufbau der Düsen für die Erfindung nicht sehr wesentlich ist, so sei doch erwähnt, dass im mittigen Bereich des Duscharmschnitts zwei sphärische Verwirbelungskammern 25 vorgesehen sind, zu denen verwiesen werden kann auf den Stand der Technik EP 2 628 546 . Diese stoßen an ihren in Figur 2 oberen Enden einen verwirbelten Wasserstrahl aus, der durch die im Durchmesser vergrößerten Düsenöffnungen 20 und 21 tritt und dabei aus der Umgebung innerhalb des Duscharms Luft aufnimmt. Die beiden Düsen 20 und 21 sind relativ eng benachbart und haben einen Abstand von ungefähr dem doppelten Durchmesser der Düsenöffnungen (an der oberen Duscharmoberfläche). Die Düse 20 wird als Boost-Düse bezeichnet und die Düse 21 als Analdüse; beide sind hinsichtlich ihrer Geometrie identisch und werden über Leitungen gleichen Querschnitts versorgt. Diese Leitungen sind hier nicht eingezeichnet, sondern befinden sich vor und hinter der Schnittebene.Even if the exact structure of the nozzles is not very important for the invention, it should be mentioned that two spherical swirling chambers 25 are provided in the central region of the shower arm section, to which reference can be made to the prior art EP 2 628 546 , These bump into theirs Figure 2 a swirled water jet from the upper ends, which passes through the enlarged diameter nozzle openings 20 and 21 and thereby absorbs air from the environment within the shower arm. The two nozzles 20 and 21 are relatively closely adjacent and have a distance of approximately twice the diameter of the nozzle openings (on the upper shower arm surface). The nozzle 20 is referred to as the boost nozzle and the nozzle 21 as the anal nozzle; both are identical in terms of their geometry and are supplied via cables of the same cross-section. These lines are not shown here, but are located in front of and behind the cutting plane.

Unter den beiden Verwirbelungskammern 25 ist ein beweglicher Düsenarm 26 erkennbar, der an seinem rechten (distalen) Ende nicht bezifferte Düsenöffnungen trägt und auf Anforderung zur Vaginaldusche ausgefahren werden kann. Dazu wird über einen Kanal 27 Wasser zugeführt, das den Arm 26 gegen die Kraft einer nicht eingezeichneten Schraubenfeder ausfährt und beaufschlagt. Dieser Teil der Duscheinrichtung ist für die Erfindung nicht wesentlich.A movable nozzle arm 26 can be seen under the two swirling chambers 25, which carries nozzle openings that are not numbered at its right (distal) end and can be extended to the vaginal shower on request. For this purpose, water is supplied via a channel 27, which extends and acts on the arm 26 against the force of a coil spring (not shown). This part of the shower device is not essential for the invention.

Über dem Kanal 27 befindet sich ein Kanal 28, der gemäß Figur 2 mit der Belüftung der Düsen 20 und 21 kommuniziert. Dieser Kanal 28 kann im übrigen bei ganz zurückgefahrenem Zustand des Duscharms 24 (nicht gezeigt) Waschwasser führen, das über die Düsen 20 und 21 austritt.Above the channel 27 is a channel 28, which according to Figure 2 communicates with the ventilation of the nozzles 20 and 21. This channel 28 can also lead to washing water which exits via the nozzles 20 and 21 when the shower arm 24 (not shown) is completely retracted.

Ferner ist in Figur 2 eine Wascheinrichtung 29 erkennbar, die das distale Ende der Führung des Duscharms 24 bildet und in dem Schüsselrand 23 gehalten ist. Diese Wascheinrichtung kann über einen Kanal 30 mit Waschwasser versorgt werden und beim Ausfahren und Zurückfahren des Duscharms 24 zur Reinigung von dessen Außenfläche dienen. Hierzu wird verwiesen auf den Stand der Technik EP 2 626 478 .Furthermore, in Figure 2 a washing device 29 can be seen, which forms the distal end of the guide of the shower arm 24 and is held in the bowl rim 23. This washing device can be supplied with washing water via a channel 30 and can be used to clean the outer surface of the shower arm 24 when the shower arm 24 is extended and retracted. For this, reference is made to the state of the art EP 2 626 478 ,

Aus den beiden zitierten Dokumenten ergeben sich im Übrigen weitere Einzelheiten über den Aufbau eines typischen Dusch-WCs.The two documents cited also provide further details on the structure of a typical shower toilet.

Im Unterschied zu vielen Duscheinrichtungen aus dem Stand der Technik dienen vorliegend die beiden an der Oberseite des Duscharms angeordneten Düsen 20 und 21 nicht verschiedenen anatomischen Zwecken, sondern beide (mit gleichem Aufbau, gleicher Abstrahlrichtung und in direkter Nachbarschaft) der Analreinigung. Im Stand der Technik ist eine zweite Düsenöffnung in der Regel für die vaginale Reinigung vorgesehen, die im vorliegenden Fall vom Düsenarm 26 vorgenommen werden kann.In contrast to many shower devices from the prior art, the two nozzles 20 and 21 arranged on the top of the shower arm do not serve different anatomical purposes, but both (with the same structure, the same direction of radiation and in the immediate vicinity) for anal cleaning. In the prior art, a second nozzle opening is generally provided for vaginal cleaning, which in the present case can be carried out by the nozzle arm 26.

Stattdessen haben die beiden Düsen 20 und 21 den Vorteil, mit dem Warmwasserversorgungssystem aus Figur 1 gleichzeitig beaufschlagt werden zu können, und zwar die Boost-Düse 20 über das T-Stück am Ausgang des Boilers 11 und die Analdüse 21 über das Ventil 17 und den Durchlauferhitzer 10. Sie können aber auch jeweils einzeln betrieben werden, ohne dass sich ihre individuelle Strahlcharakteristik deswegen ändert.Instead, the two nozzles 20 and 21 have the advantage of having the hot water supply system out Figure 1 To be able to be acted upon simultaneously, namely the boost nozzle 20 via the T-piece at the outlet of the boiler 11 and the anal nozzle 21 via the valve 17 and the water heater 10. However, they can also be operated individually without their individual Beam characteristics therefore changes.

Ein typischer Ablauf im Betrieb ist wie folgt: Das Dusch-WC kann, etwa durch einen Infrarotsensor, einen Benutzer erkennen, was die Steuerung dazu veranlasst, den Boiler 11, also insbesondere seine Heizung 12, einzuschalten. Dies kann auch bereits geschehen, wenn sich der Benutzer nur in der Nähe des Dusch-WCs befindet. Wenn dann der Start einer WC-Benutzung erkannt wird, etwa durch einen Berührungssensor, kann die Steuerung statt des Boilers 11 den Durchlauferhitzer 10 und die Pumpe in der Leitung 14 einschalten und das Ventil 17 so einstellen, dass das erwärmte Wasser die Düsenleitung bis zu der Duschdüse 21 spült und das kalte Wasser austreibt. Dies kann noch vor dem Ausfahren des Duscharms 24 erfolgen, sodass das aus der Düse 21 ausgetretene Wasser eine gewisse Reinigungsfunktion hinsichtlich des Duscharms erfüllt.A typical sequence in operation is as follows: the shower toilet can recognize a user, for example by means of an infrared sensor, which causes the control to switch on the boiler 11, in particular its heater 12. This can also happen if the user is only near the shower toilet. If the start of toilet use is then detected, for example by a touch sensor, the controller can switch on the instantaneous water heater 10 and the pump in line 14 instead of the boiler 11 and adjust the valve 17 so that the heated water flows up to the nozzle line Shower nozzle 21 rinses and drives out the cold water. This can be done before the shower arm 24 is extended so that the water emerging from the nozzle 21 fulfills a certain cleaning function with regard to the shower arm.

Dann kann, etwa nach der Auslösung der Duschfunktion, über die Rückführleitung 22 (bei entsprechender Stellung des Ventils 17) die Düsenleitung zwischen der Boost-Düse 20 und dem Boiler 11 mit Warmwasser gespült werden und zwar wieder unter Ausnutzung des Durchlauferhitzers 10. Gleichzeitig kann durch das T-Stück 18 z. B. ein Drittel des Volumenstroms des Wassers in den Boiler 11 hineingeleitet werden, um dort für eine verbesserte Durchmischung und insbesondere Aufwärmung der Kaltzone in der Nähe des Auslasses zu sorgen.Then, for example after the shower function has been triggered, the nozzle line between the boost nozzle 20 and the boiler 11 can be rinsed with hot water via the return line 22 (with the valve 17 in the appropriate position), again using the instantaneous water heater 10 the T-piece 18 z. B. a third of the volume flow of water can be passed into the boiler 11 in order to ensure improved mixing and in particular warming up of the cold zone in the vicinity of the outlet.

Dann kann der Duscharm in der an sich bekannten Weise beim Ausfahren gereinigt werden, bspw. wieder mit von dem Durchlauferhitzer 10 erwärmtem Wasser und bei hier nicht näher erläuterter Stellung des Ventils 17, infolge derer das Wasser über den Anschluss 30 in die Wascheinrichtung 29 gelangt. Ist der Duscharm 24 ausgefahren, können beide Düsen 20 und 21 verwendet werden, wobei das Ventil 17 die Rückführleitung 22 sperrt und jede Düse über ihre eigene Düsenleitung versorgt wird von dem Boiler 11 bzw. von dem Durchlauferhitzer 10.Then the shower arm can be cleaned in the manner known per se when it is extended, for example again with water heated by the instantaneous water heater 10 and with the position of the valve 17 not explained in detail here, as a result of which the water reaches the washing device 29 via the connection 30. If the shower arm 24 is extended, both nozzles 20 and 21 can be used, the valve 17 blocking the return line 22 and each nozzle being supplied by the boiler 11 or the instantaneous water heater 10 via its own nozzle line.

Wenn hingegen die Anforderung der Duschfunktion so früh erfolgt, das letzgenannter Betrieb mangels ausreichender Temperatur des Wassers in dem Boiler 11 nicht sinnvoll ist, so kann gewissermaßen als Notprogramm ausschließlich die Analdüse 21 mit von dem Durchlauferhitzer 10 erwärmtem Wasser betrieben werden und die Boost-Düse 20 erst nach Verfügbarkeit einer ausreichenden Wassertemperatur im Boiler 11.If, on the other hand, the shower function is requested so early that the latter operation does not make sense due to the insufficient temperature of the water in the boiler 11, the anal nozzle 21 can be operated with water heated by the water heater 10, so to speak, as an emergency program and the boost nozzle 20 only after a sufficient water temperature is available in the boiler 11.

Natürlich sind auch andere Verfahrensweisen (auch unabhängig von diesem konkreten Ausführungsbeispiel) möglich, z. B. eine Normalduschfunktion nur unter Verwendung von Boilerwasser und Boost-Düse 20 (sofern das Boilerwasser ausreichend warm ist) und eine Hinzuschaltung der Analdüse 21 nur auf Wunsch (was dann eine Hinzuschaltung des Durchlauferhitzers 10 bedeutet). In diesem Fall könnten die Benennungen der Düsen auch vertauscht sein, weil nun die Analdüse 21 gewissermaßen als Boost-Düse funktioniert.Of course, other procedures (also independent of this specific embodiment) are possible, e.g. B. a normal shower function only using boiler water and boost nozzle 20 (if the boiler water is sufficiently warm) and switching on the anal nozzle 21 only on request (which then means switching on the instantaneous water heater 10). In this case, the names of the nozzles could also be interchanged because the anal nozzle 21 now functions as a kind of boost nozzle.

Insgesamt zeigt das Ausführungsbeispiel, dass die separate Leitungsführung zwischen den zwei Düsen und den zugeordneten Wassererhitzern 10 bzw. 11 verschiedene Vorteile ermöglicht, die in flexibler Weise ausgenutzt werden können. Wenn die Rückführleitung 22 vorhanden ist, betrifft dies auch den geschilderten Spülvorgang bis zur Boost-Düse 20 unter Schonung des Energieinhalts im Boiler 11.Overall, the exemplary embodiment shows that the separate line routing between the two nozzles and the associated water heaters 10 and 11 enables various advantages, which can be used in a flexible manner. If the return line 22 is present, this also applies to the flushing process described up to the boost nozzle 20 while protecting the energy content in the boiler 11.

Für die bislang dargestellten Funktionen ist eine elektronische Steuerung zuständig, die figürlich nicht dargestellt ist, aber in dem Dusch-WC integriert ist. Diese Steuerung weist erfindungsgemäß ein Entkalkungsprogramm auf, um eine automatische Entkalkung durchzuführen. Dieses wird im Folgenden näher erläutert.An electronic control is responsible for the functions shown so far, which is not shown in the figures, but is integrated in the shower toilet. According to the invention, this control has a descaling program in order to carry out automatic descaling. This is explained in more detail below.

Zunächst wird der Wassertank 8 mit einer geeigneten Entkalkungslösung befüllt, die sich also danach sowohl im Frischwassertank 9 als auch im Boiler 11 befindet.First, the water tank 8 is filled with a suitable decalcifying solution, which is then located both in the fresh water tank 9 and in the boiler 11.

Darauffolgend wird in einem ersten Entkalkungsschritt eine Technikbaugruppe entkalkt, nämlich insbesondere der Durchlauferhitzer 10, der Partikelfilter 16, das Mehrwegeventil 17, das T-Stück 18 und natürlich der Frischwassertank 9 und der Boiler 11 einschließlich Heizung 12 und Temperaturfühler 19. Dazu wird die in Figur 1 in der Leitung 14 eingezeichnete und eigentlich für die Analdüse 21 vorgesehene Pumpe 31 betrieben, das Mehrwegeventil 17 so geschaltet, dass über die Leitungen 14 und 15 zugeführte Entkalkungslösung über die Leitung 22 weitergeführt wird, und die der Boost-Düse 20 zugeordnete Pumpe 32 (in Figur 1 rechts von dem T-Stück 18) gesperrt. Hier wird also eine Zirkulationsströmung durch den Boiler, den Durchlauferhitzer und die Rückführleitung 22 erzeugt. Bspw. kann die Pumpe 31 dazu eine Minute laufen und dann acht Minuten pausieren und kann dieser Vorgang z. B. drei Mal wiederholt werden.Subsequently, in a first descaling step, a technology assembly is descaled, namely in particular the continuous flow heater 10, the particle filter 16, the multi-way valve 17, the T-piece 18 and of course the fresh water tank 9 and the boiler 11 including heater 12 and temperature sensor 19. This is shown in FIG 1 shown in line 14 and actually intended for the anal nozzle 21 pump 31 operated, the multi-way valve 17 switched so that the Lines 14 and 15 supplied decalcifying solution is continued via line 22, and the pump 32 assigned to the boost nozzle 20 (in Figure 1 blocked to the right of the T-piece 18). A circulation flow through the boiler, the instantaneous water heater and the return line 22 is thus generated here. For example. the pump 31 can run for one minute and then pause for eight minutes. B. repeated three times.

In einem zweiten Programmschritt wird nun die Analdüse 21 und die zu ihr führende Düsenleitung entkalkt. Dazu wird das Mehrwegeventil 17 so umgeschaltet, dass die Entkalkungslösung durch die Analdüse 21 ausgestoßen wird und nicht in die Rückführleitung 22 gelangt. Dementsprechend kommt dieser Programmschritt weiter der Entkalkung der Leitungen 14 und 15, des Partikelfilters 16, des Durchlauferhitzers 10 und natürlich auch der Pumpe 31 zugute. Ferner werden die entsprechenden Teile des Mehrwegeventils 17 und die stromabwärts davon zur Analdüse 21 führenden Leitungsstücke sowie die Analdüse 21 entkalkt. Damit kann z. B. der in dem Frischwassertank 9 vorhandene Bestand an Entkalkungslösung aufgebraucht werden, wobei der Bestand in dem Boiler nicht angetastet wird.In a second program step, the anal nozzle 21 and the nozzle line leading to it are decalcified. For this purpose, the multi-way valve 17 is switched so that the decalcifying solution is expelled through the anal nozzle 21 and does not get into the return line 22. Accordingly, this program step further benefits the decalcification of the lines 14 and 15, the particle filter 16, the instantaneous water heater 10 and of course the pump 31. Furthermore, the corresponding parts of the multi-way valve 17 and the line sections leading downstream to the anal nozzle 21 and the anal nozzle 21 are descaled. So z. B. the existing in the fresh water tank 9 of decalcifying solution are used up, the inventory in the boiler is not touched.

In einem dritten Schritt kann dann die Boost-Düse 20 und die zu ihr führende Duschleitung einschließlich der Pumpe 32 entkalkt werden. Dazu wird diese Pumpe 32 betrieben, zieht Entkalkungslösung aus dem Boiler 11 und stößt sie über die Boost-Düse 20 aus, bspw. fünf Sekunden lang.In a third step, the boost nozzle 20 and the shower line leading to it, including the pump 32, can then be decalcified. For this purpose, this pump 32 is operated, draws decalcifying solution from the boiler 11 and expels it via the boost nozzle 20, for example for five seconds.

In einem vierten Schritt wird dann der zuvor fast entleerte Frischwassertank 9 wieder mit Frischwasser befüllt.In a fourth step, the previously almost empty fresh water tank 9 is then refilled with fresh water.

Danach kann fünftens analog dem ganz zu Anfang angesprochenen Zirkulationsschritt ein weiteres Mal für z. B. zwölf Sekunden unter Verwendung der Pumpe 31 ein Zirkulationsschritt folgen, mit dem sich die vor allem im Boiler noch vorhandene Entkalkungslösung im System verteilt.Then, fifthly, analogously to the circulation step mentioned at the very beginning, again for z. B. twelve seconds using the pump 31 follow a circulation step with which the descaling solution still present, especially in the boiler, is distributed in the system.

In einem weiteren sechsten Schritt wird die anhand Figur 2 beschriebene Duscharm-Wascheinrichtung 29 entkalkt. Dazu wird das Mehrwegeventil 17 entsprechend eingestellt und Entkalkungslösung aus dem Frischwassertank 9 über die Pumpe 31 und die Leitungen 14 und 15 dann mittels einer in Figur 1 nicht dargestellten Zuleitung und schließlich über den Kanal 30 (Figur 2) der Wascheinrichtung 29 zugeführt. Z. B. kann hier erneut der Inhalt des Frischwassertanks 9 im Wesentlichen aufgebraucht werden.In a further sixth step, the is based on Figure 2 Descaled shower arm washing device 29 descaled. For this purpose, the multi-way valve 17 is adjusted accordingly and decalcifying solution from the fresh water tank 9 via the pump 31 and the lines 14 and 15 is then in a Figure 1 supply line, not shown, and finally via channel 30 ( Figure 2 ) supplied to the washing device 29. For example, the contents of the fresh water tank 9 can essentially be used up again here.

In einem nachfolgenden siebten Schritt kann dann ein weiteres Mal die Boost-Düse 20 entkalkt werden, wie dies an sich schon beschrieben wurde. Da in dieser Situation noch Entkalkungslösung im Boiler 11 vorhanden ist, bietet sich eine Wiederholung an.In a subsequent seventh step, the boost nozzle 20 can then be descaled again, as has already been described. Since there is still a descaling solution in the boiler 11 in this situation, a repetition is advisable.

In einem darauffolgenden achten Schritt werden dann der Frischwassertank 9 und der Boiler 11 erneut mit Wasser befüllt.In a subsequent eighth step, the fresh water tank 9 and the boiler 11 are then refilled with water.

Es folgt neuntens, wie an sich ebenfalls bereits beschrieben, ein weiterer Zirkulationsschritt zum Verteilen von noch immer im Boiler 11 vorhandene Entkalkungslösung.Ninth, as already described per se, there follows a further circulation step for distributing decalcifying solution which is still present in the boiler 11.

Damit ist die Entkalkungslösung wieder im System verteilt, allerdings deutlich verdünnt. Zum Spülen des Systems kann zehntens zunächst nun der Frischwassertank 9 über die Analdüse 21 und damit also über die Leitungen 14 und 15 sowie das Mehrwegeventil 17 entleert werden.This means that the descaling solution is redistributed in the system, but significantly diluted. For flushing the system, the fresh water tank 9 can now be emptied first via the anal nozzle 21 and thus therefore via the lines 14 and 15 and the multi-way valve 17.

Dann kann elftens in einem weiteren Spülschritt der Inhalt des Boilers 11 über die Boost-Düse 20, also über das T-Stück 18 und die Pumpe 32, entleert werden. Dann werden zwölftens beide Tanks, also Frischwassertank 9 und Boiler 11, neu mit Wasser befüllt.Then, in a further rinsing step, the content of the boiler 11 can be emptied via the boost nozzle 20, that is to say via the T-piece 18 and the pump 32. Then, twelfth, both tanks, i.e. fresh water tank 9 and boiler 11, are refilled with water.

In einem weiteren (dreizehnten) Spülschritt kann dann erneut der Frischwassertank 9 entleert werden, diesmal aber über die Duscharmreinigung 29, also erneut über die Leitungen 14 und 15 und das Mehrwegeventil 17. Daraufhin wird vierzehntens erneut der Boiler entleert, wie an sich bereits beschrieben. Beide Tanks werden fünfzehntens frisch befüllt. Je nach Bedarf und Aggressivität der ursprünglichen Entkalkungslösung können die Spülschritte natürlich wiederholt werden.In a further (thirteenth) rinsing step, the fresh water tank 9 can then be emptied again, but this time via the shower arm cleaning 29, ie again via lines 14 and 15 and the multi-way valve 17. Then, the boiler is emptied again fourteenthly, as already described per se. Fifteen, both tanks are freshly filled. Depending on the needs and aggressiveness of the original decalcifying solution, the rinsing steps can of course be repeated.

Insgesamt zeichnet sich das Entkalkungsprogramm durch verschiedene Zirkulationsschritte aus, die zunächst die Ausnutzung der Entkalkungslösung, aber auch die Gründlichkeit der Entkalkung an sich verbessern, dann aber im weiteren Verlauf auch der Verteilung von Restbeständen an Entkalkungslösung im System dienen können. Insbesondere ist bei den Zirkulationsschritten ein Durchspülen sowohl des Boilers 11 als auch des Durchlauferhitzers 10 möglich. Trotzdem können in speziellen Entkalkungsschritten die Düsen 20 und 21, die ihnen zugeordneten Duschleitungen und auch die Duscharmreinigung 29 entkalkt und gespült werden, dies dann ohne Zirkulation.Overall, the decalcification program is characterized by various circulation steps, which first improve the utilization of the decalcification solution, but also the thoroughness of the decalcification itself, but can subsequently also serve to distribute residual amounts of decalcification solution in the system. In particular, in the circulation steps, flushing through both the boiler 11 and the instantaneous water heater 10 is possible. Nevertheless, the nozzles 20 and 21, the shower lines assigned to them and also the shower arm cleaning 29 can be decalcified and rinsed in special descaling steps, then without circulation.

Claims (14)

  1. A shower closet having a water heater (10, 11) for heating shower water and comprising a water supply connection and a shower arm conduit connection and wherein a circulation conduit (22) for circulating water through the water heater (10, 12) is provided on the water heater (10, 12),
    characterized in that the circulation conduit (22) is a feed-back conduit (22) between the water supply connection and the shower arm conduit connection of the water heater (10, 11)
    and the shower closet comprises a control device adapted for conducting an automatic decalcification in which a decalcification solution circulates through the water heater (10, 11) and the feed-back conduit (22).
  2. The shower closet of claim (1) having two water heaters (10,11), in particular a flow-type heater (10) and a boiler (11), mutually connected by a conduit (14) wherein the feed-back conduit (22) is connected to a respective different connection of each of both water heaters (10, 11) so that in the automatic decalcification a common circulation of decalcification solution through both water heaters (10, 11) is enabled.
  3. The shower closet of claim 1 or 2 in which a further step is provided during the automatic decalcification additional to the circulation, in which step the water heater (10, 11) or at least one of the two water heaters (10,11) outputs decalcification solution via a shower nozzle (20, 21) and therein decalcificates a conduit path leading to the shower nozzle (20, 21).
  4. The shower closet of claim 2 or 3 wherein at least two shower nozzles (20, 21) for ejecting heated shower water are provided wherein one respective of the shower nozzles (20, 21) is allocated to a respective one of the water heaters (10, 11) and is connected to this water heater (10, 11) via a respective dedicated nozzle conduit.
  5. The shower closet of claim 3 and claim 4 wherein a step is provided during the automatic decalcification in which step the other water heater (10, 11) outputs decalcification solution via the other shower nozzle (20, 21) and thus decalcificates the conduit path leading to this shower nozzle (20, 21).
  6. The shower closet of claim 5 wherein one of the two water heaters (10, 11) is a flow-type heater (10) and the other one is a boiler (11) and a circulation step is provided after the output of decalcification solution by the flow-type heater (10) and by the boiler (11) via both shower nozzles (21, 22), in order to distribute any decalcification solution still present in the boiler (11).
  7. The shower closet of one of the preceding claims wherein a device (29) for a shower arm cleaning is provided and can be supplied with warm water by the water heater (10) wherein the automatic decalcification includes a step in which the water heater (10) outputs decalcification solution via the shower arm cleaning device (29) for decalcification thereof.
  8. The shower closet of claim 5 and claim 7 wherein one of the two water heaters (10, 11) is a flow-type heater (10) and the other one is a boiler (11) and decalcification solution present in the boiler (11) is used for the decalcification of the shower arm cleaning device (29) after the output of decalcification solution by the flow-type heater (10) and by the boiler (11) via both shower nozzles (20, 21).
  9. The shower closet of one of the preceding claims, at least claim 2, having a water reservoir (9) in a water supply conduit (7, 14) of the flow-type heater (10), which water reservoir (9) in the water supply conduit (7, 14) of the flow-type heater (10) is connected to the boiler (11) via an overflow device (13) so that both can be filled via the water supply conduit (7, 14) upstream of the water reservoir (9).
  10. The shower closet of one of the preceding claims, at least claim 4, wherein the control device is adapted, in a switch-on procedure, to rinse the nozzle conduit supplied by the flow-type heater (10) and the shower nozzle (21) supplied by the flow-type heater (10) with heated water from the flow-type heater (10) first and to rinse the nozzle conduit supplied by the boiler (11) and the nozzle (20) supplied by the boiler (11) with heated water at a later time.
  11. The shower closet of claim 10 wherein the control device is adapted to have the nozzle conduit supplied by the boiler (11) be rinsed in the switch-on procedure via the feed-back conduit (15, 22) between the output of the flow-type heater (10) and the output of the boiler (11) with heated water from the flow-type heater (10).
  12. The shower closet of claim 11 wherein the control device is adapted for that a part of the water heated by the flow-type heater (10) is branched-off from the feed-back conduit (15, 22) into the boiler (11), therein.
  13. The shower closet of claim 12 wherein the control device is adapted for that, in case of that after a switch-on procedure the shower function of the shower closet is triggered by a user that early that the water in the boiler (11) is not yet heated or not yet completely heated, only the flow-type heater (10), the nozzle conduit supplied thereby and the nozzle (21) supplied thereby are used for the shower function and that, in case of a later triggering of the shower function, the flow-type heater (10) and the boiler (11) and the nozzle conduits and nozzles (21, 20) respectively supplied thereby are simultaneously used for the shower function.
  14. A use of the shower closet of one of the preceding claims for decalcification according to an automatic decalcification programme defined by the control device.
EP15020231.5A 2015-11-18 2015-11-18 Shower wc with water heater Active EP3170940B1 (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
EP15020231.5A EP3170940B1 (en) 2015-11-18 2015-11-18 Shower wc with water heater
PL15020231T PL3170940T3 (en) 2015-11-18 2015-11-18 Shower wc with water heater
ES15020231T ES2778101T3 (en) 2015-11-18 2015-11-18 Toilet-bidet with water heater
PT150202315T PT3170940T (en) 2015-11-18 2015-11-18 Shower wc with water heater
DK15020231.5T DK3170940T3 (en) 2015-11-18 2015-11-18 SHOWER TOILET WITH WATER HEATER
CN201611272986.3A CN106988399B (en) 2015-11-18 2016-11-18 Flushing toilet with water heater

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP15020231.5A EP3170940B1 (en) 2015-11-18 2015-11-18 Shower wc with water heater

Publications (2)

Publication Number Publication Date
EP3170940A1 EP3170940A1 (en) 2017-05-24
EP3170940B1 true EP3170940B1 (en) 2020-01-01

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Application Number Title Priority Date Filing Date
EP15020231.5A Active EP3170940B1 (en) 2015-11-18 2015-11-18 Shower wc with water heater

Country Status (6)

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EP (1) EP3170940B1 (en)
CN (1) CN106988399B (en)
DK (1) DK3170940T3 (en)
ES (1) ES2778101T3 (en)
PL (1) PL3170940T3 (en)
PT (1) PT3170940T (en)

Families Citing this family (6)

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Publication number Priority date Publication date Assignee Title
JP6369609B1 (en) * 2017-07-25 2018-08-08 Toto株式会社 Sanitary washing device
JP6891697B2 (en) * 2017-07-25 2021-06-18 Toto株式会社 Sanitary cleaning equipment
JP6891698B2 (en) * 2017-07-25 2021-06-18 Toto株式会社 Sanitary cleaning equipment
CN108331110B (en) * 2018-02-06 2024-08-16 浙江怡和卫浴有限公司 Intelligent toilet
CN110220307A (en) * 2018-03-02 2019-09-10 青岛经济技术开发区海尔热水器有限公司 Descaling assembly and gas water heater
CN110185110A (en) * 2019-06-13 2019-08-30 厦门帝恒诺卫浴科技有限公司 A kind of the water route cleaning systems and its clean method of the electronic toilet

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EP2687641A1 (en) 2012-07-20 2014-01-22 Geberit International AG Shower WC with heat pump for heating the water
WO2015143571A1 (en) 2014-03-25 2015-10-01 Noventa Ag Descaling capsule for bidet toilet
EP3141668A1 (en) 2015-09-09 2017-03-15 Geberit International AG Shower wc with continuous flow heater and boiler

Also Published As

Publication number Publication date
CN106988399A (en) 2017-07-28
DK3170940T3 (en) 2020-03-23
CN106988399B (en) 2022-07-19
PL3170940T3 (en) 2020-07-13
ES2778101T3 (en) 2020-08-07
EP3170940A1 (en) 2017-05-24
PT3170940T (en) 2020-03-24

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