DE2743333A1 - Heat recovery system for domestic waste water - uses smell trap with helical tube as water preheating heat exchanger - Google Patents

Heat recovery system for domestic waste water - uses smell trap with helical tube as water preheating heat exchanger

Info

Publication number
DE2743333A1
DE2743333A1 DE19772743333 DE2743333A DE2743333A1 DE 2743333 A1 DE2743333 A1 DE 2743333A1 DE 19772743333 DE19772743333 DE 19772743333 DE 2743333 A DE2743333 A DE 2743333A DE 2743333 A1 DE2743333 A1 DE 2743333A1
Authority
DE
Germany
Prior art keywords
water
heat exchanger
waste water
wastewater
thermal energy
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
DE19772743333
Other languages
German (de)
Inventor
Karl-Ernst Brunsemann
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.)
BRUNSEMANN KARL ERNST
Original Assignee
BRUNSEMANN KARL ERNST
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 BRUNSEMANN KARL ERNST filed Critical BRUNSEMANN KARL ERNST
Priority to DE19772743333 priority Critical patent/DE2743333A1/en
Publication of DE2743333A1 publication Critical patent/DE2743333A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F28D7/02—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being helically coiled
    • F28D7/024—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being helically coiled the conduits of only one medium being helically coiled tubes, the coils having a cylindrical configuration
    • 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
    • E03C1/12—Plumbing installations for waste water; Basins or fountains connected thereto; Sinks
    • E03C1/122—Pipe-line systems for waste water in building
    • 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
    • E03C1/12—Plumbing installations for waste water; Basins or fountains connected thereto; Sinks
    • E03C1/28—Odour seals
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
    • F28D21/0001—Recuperative heat exchangers
    • F28D21/0012—Recuperative heat exchangers the heat being recuperated from waste water or from condensates
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/56—Heat recovery units

Landscapes

  • Engineering & Computer Science (AREA)
  • Public Health (AREA)
  • Environmental & Geological Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Water Supply & Treatment (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Bidet-Like Cleaning Device And Other Flush Toilet Accessories (AREA)
  • Heat-Pump Type And Storage Water Heaters (AREA)

Abstract

The heat recovery system recovers heat from waste water from washing basins, sinks, bidets and showers. These sanitary installations have hot and cold water supply and smell trap in outlet. Heat recovered is used for fresh water preheating . The smell trap itself or a connected vessel forms heat exchanger with a helical tube coil. Water from cold water supply flows through this helical coil and cold water is warmed by the waste water heat. The preheated water flows into a hot water boiler or moxing valve. The whole waste water vessel and heat exchanger can be built into a boiler tank.

Description

Vorrichtung zur .Rückgewinnung von Wärmeenergie Device for .Recovering thermal energy

aus dem Abwasser von Waschbecken, Spülbecken, Bidets, Duschen und anderen sanitären Einrichtungen Auf Grund der Energiekrise fällt der Rückgewinnung von bisher nutzlos verlorener Wärmeenergie im Abwasser eine besondere Bedeutung zu. Vorbedingung ftir den Einsatz einer Vorrichtung zur Rückgewinnung dieser Wärmeenergie ist a) möglichst geringer Kostenaufwand £Ur die Herstellung und Unterhaltung der Vorrichtung zur tSückgewinnung bisher verlorener Wärmeenergie, b) geringe Anschaffungskosten, c) einfache, billige Montage bei neuen und schon vorhandenen sanitären Installationen. from wastewater from sinks, sinks, bidets, and showers other sanitary facilities Due to the energy crisis, the recovery falls of previously uselessly lost thermal energy in wastewater is of particular importance to. Precondition for the use of a device for the recovery of this thermal energy is a) the lowest possible cost £ Ur the production and maintenance of the Device for the recovery of previously lost thermal energy, b) low acquisition costs, c) simple, cheap installation for new and existing sanitary installations.

Diese orderungen werden von der nachstenend beschriebenen Erfindung im besonderen Masse erfüllt: Zu a) Die Vorrichtung entnimmt Wärmeenergie aus dem Abwasser und führt sie dem Frischwasser zur dessen Vorwärmung zu, ohne selbst Energie zu verbrauchen, und ohne dass Betriebskosten in irgend einer anderen Form entstehen, zu b) durch den einfachen, unkomplizierten Aufbau der Vorrichtung in Kombination mit dem Geruchsverschluss sind die Anschaffungskosten sehr gering, zu c) bei Neuanlagen entstehen keine Mehrkosten für die Montage, da statt des herkömmlichen Geruchsverschlusses, der Geruchsverschluss mit eingebautem Wärmeaustauscher montiert wird.These requirements are met by the invention described below fulfilled in particular: To a) The device takes thermal energy from the Waste water and feeds it to the fresh water to preheat it, without any energy itself to consume, and without incurring operating costs in any other form, to b) by the simple, uncomplicated structure of the device in combination With the odor trap, the acquisition costs are very low, to c) for new systems There are no additional costs for installation, because instead of the conventional odor trap, the odor trap with built-in heat exchanger assembled will.

Bei vorhandenen Anlagen muss lediglich der Geruchsverschluss ausgetauscht und die Wasserzufuhr an den Wärmeaustauscher angeschlossen werden. Diese Arbeiten können selbst von einem Nichtfachmann ausgeführt werden. In existing systems, only the odor trap needs to be replaced and the water supply connected to the heat exchanger. These works can even be carried out by a non-specialist.

1)ie zur Zeit auf dem Markt vorhandenen, oder sich in der Entwicklung befindenen Wärmerückgewinnungsanlagen mit Wärmepumpe, Speicherbehälter, ejektronischer Steueranlage u.a. nutzen die im Abwasser vorhandenc Wärme zwar besser aus, sind in der Anschaffung untl in der Installation aber so teuer, dass die meisten Verbraucher vor diesen Kosten zurückschrecken. Ausserdem verbrauchen diese Anlagen einen grossen Teil der zurückgewonnenen Wärmeenergie in Form von teurer elektrischer Energie wieder selbst, so dass sich derartige Anlagen, wenn überhaupt, erst nach sehr langer Zeit amortisieren.1) ie currently on the market, or under development existing heat recovery systems with heat pumps, storage tanks, ejectronic Control systems, among other things, make better use of the heat available in the wastewater to buy and install but so expensive that most consumers shy away from these costs. In addition, these systems consume a large amount Part of the recovered thermal energy in the form of expensive electrical energy itself, so that such systems take a very long time, if at all amortize.

Bei Waschbecken oder ähnlichen Dusch- und Waschanlagen mit Warm- und Kaltwasserzulauf wird das warme Wasser entweder in einer zentralen Warmwasserbereitungsanlage oder in einem, der jeweiligen Anlage zugeordneten Warmwasserboiler oder Durchlauferhitzer erzeugt. Das über Zapfhähne oder eine Mischbatterie zufliessende Wasser von ca. 30° bis 40° C wird anschliessend durch den Geruchsverschluss in die Abflussleitung geschickt.For wash basins or similar shower and washing systems with warm and The cold water supply is the warm water either in a central water heating system or in a hot water boiler or instantaneous water heater assigned to the respective system generated. The water of approx. 30 ° to 40 ° C is then passed through the odor trap into the drainage line sent.

Die in diesem Wasser noch vorhandene Abwärmeenergie geht bisher nutzlos verloren.The waste heat energy still present in this water is so far useless lost.

Zur Beseitigung dieses Überstandes wird erfindungsgemäss eine Vorrichtung geschaffen, die dem Abwasser die noch darin enthalten Wärmeenergie entzieht und sie dem Frischwasser wirder zuführt.According to the invention, a device is used to eliminate this protrusion created, which removes the heat energy still contained in the wastewater and it is added to the fresh water.

Erreicht wird dieses dadurch, dass in deni in Fig. 1 dalgestelltel , Ceruchsverschluss a ein Wärmeaustauscher b in Form einer Rohrspirale oder anderer l'orm eingebaut ist, das dem Geruchsverschluss a iiber den Anschlussstutzen c zufliessende warrric Abwasser tritt am unteren Ende des eingebauten Tauchrohres d aus, steigt zwischen dem Tauchrohr d und dein Aussenrnantel des Geruchsverschlusses a hoch, umspült dabei die Aussenf'lächen des Wärmeaustauschers b und fliesst über den Abflussstutzen e in die Abflussleitung. Gleichzeitig fliesst kaltes Frischwasser durch den Anschlussstutzen f in den Wärmeaustauscher b, erwarlllt sich an den vom warmen Abwasser umgebenen und aufgeheizten Wandungen des Wärmeaustauschers und tritt als vorgewärmtes Frischwasser an dem Stutzen g wieder aus.This is achieved in that in the deni in Fig. 1 there is , Ceruche lock a a heat exchanger b in the form of a pipe spiral or other l'orm is installed, which flows to the odor trap a via the connection piece c warrric wastewater emerges at the lower end of the built-in dip tube d, rises between the immersion tube d and the outer casing of the odor trap a high, it washes around the outer surfaces of the heat exchanger b and flows through the drainage connection e into the drain line. At the same time, cold fresh water flows through the connection nozzle f in the heat exchanger b, arises at the one surrounded by the warm waste water and heated walls of the heat exchanger and occurs as preheated fresh water on the connection piece g again.

Figur 2 zeigt ein Beispiel für die Montageanordnung und die Wirkungsweise der Vorrichtung zur Rückgewinnung von Wärmeenergie aus dem Abwasser bei einem Waschbecken mit Warmwasserversorgung aus einem Warmwasserboiler oder Durchlauferhitzer.Figure 2 shows an example of the mounting arrangement and the mode of operation the device for the recovery of thermal energy from the wastewater in a wash basin with hot water supply from a hot water boiler or instantaneous water heater.

Beim Öffnen des Warmwasserzapfventils h fliesst kaltes Frischwasser aus dem Kaltwasserleitungsanschluss i über den Wärmeaustauscher im Geruchsverschluss a in den Warmwasserboiler k und drückt das hierin vorhandene warme Wasser über das Zapfventil h in das Waschbecken 1 und gelangt von dort als warmes Abwasser in den Geruchsverschluss a und heizt dort, bevor es in die Abflussleitung gelangt, das dem Boiler k zufliessende kalte Frischwasser auf. Dadurch muss im Boiler k weniger Energie aufgewendet werden, um das Wasser auf die gleiche Temperatur zu erwärrnen.When the hot water nozzle h opens, cold fresh water flows from the cold water pipe connection i via the heat exchanger in the odor trap a into the hot water boiler k and presses the warm water present in it over the Dispensing valve h into the wash basin 1 and from there reaches the as warm waste water Odor trap a and heats there before it reaches the drainage line, the cold fresh water flowing into the boiler k. This means that there is less k in the boiler Energy is used to heat the water to the same temperature.

Fig. 3 zeigt ein Beispiel fr die Wirkungsweise und die Montageanordnung der Vorrichtung zur Rückgewinnung von Wärmeenergie aus dem Abwasser bei einem Waschbecken mit Warmwasserentnahme aus einer zentralen Warmwasserversorgungr Der Warmwasseranschluss der Mischbatterie m ist direkt mit dem Warmwasserleitungsanschluss n verbunden, während der Kaltwasseranschluss über den Wärmetauscher im Geruchsverschluss a mit dem Kaltwasserieitungsanschluss i verbunden ist.Fig. 3 shows an example of the mode of operation and the mounting arrangement the Device for recovering thermal energy from wastewater in a wash basin with hot water withdrawal from a central hot water supply r The hot water connection the mixer tap m is directly connected to the hot water pipe connection n, while the cold water connection via the heat exchanger in the odor trap a with the cold water line connection i is connected.

Durch mehr oder weniger weites fernen der Warm- und Kaltwasserventile an der Mischbatterie m wird das in das Waschbecken 1 fliessende warme Wasser auf die gewünschte Temperatur eingestellt. Das von dem Waschbecken 1 in den Geruchsverschluss a gelangende warme Abwasser heizt dort, bevor es in die Abrlussleitung gelangt, das der Mischbatterie m zufliessende kalte Frischwasser auf. Dadurch braucht der Mischbatterie weniger warmes Wasser aus der Warmwasserleitung zugeführt werden, um die gleiche Warmwasser-Austrittstemperatur zu erreichen.By more or less far away the hot and cold water valves the hot water flowing into the sink 1 is on the mixer tap m set the desired temperature. That from the sink 1 into the odor trap a warm wastewater that arrives is heated there before it reaches the drainage line, the cold fresh water flowing into the mixer tap m. As a result, he needs Mixer tap less hot water is supplied from the hot water pipe, to achieve the same hot water outlet temperature.

In der gleichen Art der vorstehend an einem Waschbecken beschriebenen Montageanordnung lässt sich diese Vorrichtung auch an Spülbecken, Bidets, Duschen und anderen sanitären Einrichtung n mit Warm- und Kaltwasserzulauf montieren.In the same manner as that described above on a wash basin Mounting arrangement, this device can also be used on sinks, bidets, showers and other sanitary facilities with hot and cold water supply.

Claims (4)

P a t e n t a n s p r ü c h e 1. Vorrichtung zur Rückgewinnung von Wärmeenergie aus Abwasser von Waschbecken, Spülbecken, Bidets, Duschen und anderen sanitären Einrichtungen mit Warm- und Kaltwasserzufluss über Zapfhähne oder Mischbatterie und Geruchsverschluss in der Abwasserabflussrohrleitung, dadurch gekennzeichnet, dass in dem von dem Abwasser durchflossenen Geruchsverschluss oder in einem damit in Verbindung stehenden Behälter ein Wärmeaustauscher in Form einer Rohrspirale oder anderer Form eingebaut ist, durch welchen das Kaltwasserleitungswasser fliesst, bevor es in den Warmwasserboiler, den Durchlauferhitzer oder die Mischbatterie eintritt. P a t e n t a n s p r ü c h e 1. Device for the recovery of Thermal energy from wastewater from sinks, sinks, bidets, showers and others sanitary facilities with hot and cold water supply via taps or mixer tap and odor trap in the sewage drainage pipe, characterized in that that in the odor trap through which the wastewater flows or in one with it related container a heat exchanger in the form of a spiral tube or any other form through which the cold water tap water flows, before it enters the hot water boiler, the water heater or the mixer tap. 2. Vorrichtung zur Rückgewinnung von Wärmeenergie aus Abwasser nach Anspruch 1, dadurch gekennzeichnet, dass der Wärmeaustauscher in Form einer Rohrspirale oder anderer Form hinter dem Geruchsverschluss in einem separaten, vom Abwasser durchflossenem Behalter, angeordnet ist. 2. Device for the recovery of thermal energy from wastewater according to Claim 1, characterized in that the heat exchanger is in the form of a spiral tube or another form behind the odor trap in a separate, from the sewage flow-through container, is arranged. Vorrichtung zur Rückgewinnung von Wärmeenergie aus Abwasser nach Anspruch 1 und 2, dadurch gekennzeichnet, dass de vom Abwasser durchflossene Behälter mit dem eingebauten Wärmeaustauscher in einen Warmwasserboiler oder einen Durchlauferhitzer eingebaut ist. Device for the recovery of thermal energy from wastewater according to Claim 1 and 2, characterized in that the waste water flows through the container with the built-in heat exchanger in a hot water boiler or a flow heater is built in. 4. Vorrichtung zur Rückgewinnung von Wärmeenergie aus Abwasser nach Anspruch 1,2 und 3. dadurch gekerlnzeichnet, dass der vom Abwasser durchflossene Behälter mit dem eingebauten Wärmeaustauscher gleichzeitig als Abwassersammelbehälter dient und - wie z.F3. bei Durchkabinen - über eine Abwasserpumpe entleert wird.4. Device for the recovery of thermal energy from wastewater according to Claim 1, 2 and 3, characterized in that the wastewater flowing through it The tank with the built-in heat exchanger doubles as a waste water collection tank serves and - like e.g. F3. in through cabins - is emptied via a sewage pump.
DE19772743333 1977-09-27 1977-09-27 Heat recovery system for domestic waste water - uses smell trap with helical tube as water preheating heat exchanger Withdrawn DE2743333A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19772743333 DE2743333A1 (en) 1977-09-27 1977-09-27 Heat recovery system for domestic waste water - uses smell trap with helical tube as water preheating heat exchanger

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19772743333 DE2743333A1 (en) 1977-09-27 1977-09-27 Heat recovery system for domestic waste water - uses smell trap with helical tube as water preheating heat exchanger

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DE2743333A1 true DE2743333A1 (en) 1979-03-29

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Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3045740A1 (en) * 1980-12-04 1982-07-08 Horst Dr.-Ing. 8000 München Pichert Waste-water duct odour seal heat recovery - involves flow chamber surrounding odour seal used as heat exchanger in fresh water duct
DE3202587A1 (en) * 1982-01-27 1983-08-04 Küppersbusch AG, 4650 Gelsenkirchen Heat exchanger and mould for producing the same
FR2868796A1 (en) * 2004-04-09 2005-10-14 Cao Fao Solutions Sanitary facility e.g. shower installation, has energy recovery device that recovers heat from units for transmitting heat to cold water supply unit, and trap that is provided for unit constituting heat exchanger
WO2008113604A1 (en) * 2007-03-21 2008-09-25 Frank & Krah Wickelrohr Gmbh Tubular hollow profile and the use thereof
AT509213B1 (en) * 2009-11-18 2011-07-15 Peter Dipl Ing Dr Schuetz DEVICE FOR WATER TREATMENT
ITMI20111533A1 (en) * 2011-08-11 2013-02-12 Linari Engineering S R L ECONOMIZING THERMO-HYDRAULIC DEVICE FOR HEAT RECOVERY FROM SANITARY WASTE WATERS
CN103644652A (en) * 2013-12-24 2014-03-19 刘沃明 Heat energy recycling device
EP3106816A1 (en) 2015-06-19 2016-12-21 Bleckmann GmbH & Co. KG Heat exchanging device and method therefore
US9648983B2 (en) 2012-05-15 2017-05-16 Bleckmann Gmbh & Co. Kg Helical dynamic flow through heater
US9664414B2 (en) 2010-07-12 2017-05-30 Bleckmann Gmbh & Co. Kg Dynamic flow heater
DE202015009432U1 (en) 2015-06-19 2017-07-31 Bleckmann Gmbh & Co. Kg Heat exchange device
EP4230813A1 (en) * 2022-02-18 2023-08-23 Bette GmbH & Co. KG Outlet fitting with heat recuperation for a sanitary bathtub

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2502351A1 (en) * 1975-01-22 1976-07-29 Wilfried Von Der Ohe Economical shower unit with heat exchanger - has cold water supply passing by hot waste water in counterflow thereby absorbing heat

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2502351A1 (en) * 1975-01-22 1976-07-29 Wilfried Von Der Ohe Economical shower unit with heat exchanger - has cold water supply passing by hot waste water in counterflow thereby absorbing heat

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3045740A1 (en) * 1980-12-04 1982-07-08 Horst Dr.-Ing. 8000 München Pichert Waste-water duct odour seal heat recovery - involves flow chamber surrounding odour seal used as heat exchanger in fresh water duct
DE3202587A1 (en) * 1982-01-27 1983-08-04 Küppersbusch AG, 4650 Gelsenkirchen Heat exchanger and mould for producing the same
FR2868796A1 (en) * 2004-04-09 2005-10-14 Cao Fao Solutions Sanitary facility e.g. shower installation, has energy recovery device that recovers heat from units for transmitting heat to cold water supply unit, and trap that is provided for unit constituting heat exchanger
WO2008113604A1 (en) * 2007-03-21 2008-09-25 Frank & Krah Wickelrohr Gmbh Tubular hollow profile and the use thereof
AT509213B1 (en) * 2009-11-18 2011-07-15 Peter Dipl Ing Dr Schuetz DEVICE FOR WATER TREATMENT
AT509213A4 (en) * 2009-11-18 2011-07-15 Peter Dipl Ing Dr Schuetz DEVICE FOR WATER TREATMENT
US9664414B2 (en) 2010-07-12 2017-05-30 Bleckmann Gmbh & Co. Kg Dynamic flow heater
ITMI20111533A1 (en) * 2011-08-11 2013-02-12 Linari Engineering S R L ECONOMIZING THERMO-HYDRAULIC DEVICE FOR HEAT RECOVERY FROM SANITARY WASTE WATERS
US9648983B2 (en) 2012-05-15 2017-05-16 Bleckmann Gmbh & Co. Kg Helical dynamic flow through heater
CN103644652B (en) * 2013-12-24 2016-03-23 刘沃明 A kind of heat-energy recovering apparatus
CN103644652A (en) * 2013-12-24 2014-03-19 刘沃明 Heat energy recycling device
EP3106816A1 (en) 2015-06-19 2016-12-21 Bleckmann GmbH & Co. KG Heat exchanging device and method therefore
DE202015009432U1 (en) 2015-06-19 2017-07-31 Bleckmann Gmbh & Co. Kg Heat exchange device
EP4230813A1 (en) * 2022-02-18 2023-08-23 Bette GmbH & Co. KG Outlet fitting with heat recuperation for a sanitary bathtub

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