US20130074540A1 - Device for preparing hot water, in particular for domestic applications - Google Patents

Device for preparing hot water, in particular for domestic applications Download PDF

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Publication number
US20130074540A1
US20130074540A1 US13/702,598 US201113702598A US2013074540A1 US 20130074540 A1 US20130074540 A1 US 20130074540A1 US 201113702598 A US201113702598 A US 201113702598A US 2013074540 A1 US2013074540 A1 US 2013074540A1
Authority
US
United States
Prior art keywords
waste water
hot water
water container
container
agitating
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.)
Abandoned
Application number
US13/702,598
Other languages
English (en)
Inventor
Stefan Holzer
Evgeni Rehfuss
Andreas Renner
Markus Spielmannleitner
Gerhard Wetzl
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.)
BSH Hausgeraete GmbH
Original Assignee
BSH Bosch und Siemens Hausgeraete GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by BSH Bosch und Siemens Hausgeraete GmbH filed Critical BSH Bosch und Siemens Hausgeraete GmbH
Assigned to BSH BOSCH UND SIEMENS HAUSGERAETE GMBH reassignment BSH BOSCH UND SIEMENS HAUSGERAETE GMBH ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: REHFUSS, EVGENI, HOLZER, STEFAN, RENNER, ANDREAS, SPIELMANNLEITNER, MARKUS, WETZL, GERHARD
Publication of US20130074540A1 publication Critical patent/US20130074540A1/en
Abandoned legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B27/00—Machines, plants or systems, using particular sources of energy
    • F25B27/02—Machines, plants or systems, using particular sources of energy using waste heat, e.g. from internal-combustion engines
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D11/00—Central heating systems using heat accumulated in storage masses
    • F24D11/02—Central heating systems using heat accumulated in storage masses using heat pumps
    • F24D11/0214—Central heating systems using heat accumulated in storage masses using heat pumps water heating system
    • F24D11/0235—Central heating systems using heat accumulated in storage masses using heat pumps water heating system with recuperation of waste energy
    • F24D11/025—Central heating systems using heat accumulated in storage masses using heat pumps water heating system with recuperation of waste energy contained in waste water
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H4/00—Fluid heaters characterised by the use of heat pumps
    • F24H4/02—Water heaters
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H4/00—Fluid heaters characterised by the use of heat pumps
    • F24H4/02—Water heaters
    • F24H4/04—Storage heaters
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D2200/00—Heat sources or energy sources
    • F24D2200/16—Waste heat
    • F24D2200/20—Sewage 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]
    • Y02B30/12—Hot water central heating systems using heat pumps
    • 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]
    • Y02B30/52—Heat recovery pumps, i.e. heat pump based systems or units able to transfer the thermal energy from one area of the premises or part of the facilities to a different one, improving the overall efficiency

Definitions

  • the invention relates to a device for preparing hot water, in particular for domestic applications, by recovering heat from waste water, preferably waste water from a sink and/or a dishwasher or washing machine, by means of a heat pump, in particular a compression heat pump, having a waste water container which collects the waste water, and a hot water reservoir, wherein the evaporator of the heat pump is in thermal contact with the waste water container and the condenser of the heat pump is in thermal contact with the hot water reservoir.
  • a heat pump in particular a compression heat pump
  • a device of said type permits the thermal energy present in the waste water of domestic applications to be extracted before said waste water is discharged into the drain system.
  • a device of said type is known from EP 0 088 055 A1, the device described there containing a waste water collection container which permits the temporary storage of the hot water, and in addition a heat pump which extracts the energy from the hot waste water and supplies it to a container which serves for storing the hot water.
  • the object underlying the invention is to improve a device of the type cited in the introduction to the effect that deposits of dirt particles in the waste water container are avoided and consequently an optimal transfer of heat through the wall of the waste water container is ensured.
  • the advantage achieved by means of the invention essentially consists in the fact that the agitating apparatus keeps the waste water in the waste water container in motion so that deposits cannot accumulate on the wall of the waste water container or at most can accumulate only to a minor extent. In particular this renders any anti-dirt coatings on the internal wall superfluous. Furthermore, the agitating apparatus ensures the water is circulated in the waste water container, thereby enabling the thermal energy contained in the waste water to be extracted more quickly, with the result that a heat gradient from the center of the waste water container toward the edge is avoided. In addition, the agitating apparatus can simultaneously perform a pumping or conveying function for the waste water.
  • the waste water container is implemented as a cylindrical hollow body having a waste water inlet and a waste water outlet, the agitating apparatus being formed by a driven shaft running coaxially in the waste water container and having agitating elements arranged thereon.
  • the agitating elements can be designed in any suitable form, for example also as agitating blades; in this case it has also proved advantageous within the scope of the invention if the agitating elements are embodied as a worm, since a conveying function is fulfilled by this means.
  • the agitating elements can in this case also be structured in such a way that they form a closure means for the waste water.
  • a valve can furthermore be provided at the waste water outlet as a closure means for the waste water. Said valve remains closed at first until the waste water has cooled down to a predetermined lower temperature value.
  • the agitating elements In order to avoid deposits of dirt particles to the greatest possible extent it is beneficial to embody the agitating elements in such a way that they are in contact with the wall surface of the waste water container or are disposed facing it with a slight gap.
  • the drive shaft can be driven by a motor.
  • the drive shaft together with the agitating elements and the motor to be embodied as a structural unit which can be easily removed from the waste water container for cleaning purposes.
  • the waste water container is arranged inclined at an angle with a fall toward the waste water outlet.
  • the invention makes provision for a preliminary heat exchanger for the fresh water to be provided on the waste water container.
  • Said preliminary heat exchanger is beneficially formed by a coiled pipe running in a spiral shape around the housing of the waste water container.
  • the inlet of the hot water container is provided in the latter's lower region and is connected to the outlet of the preliminary heat exchanger.
  • the hot water can collect in the upper region of the hot water container without being mixed with the replenishing fresh water, such that the hot water is ready to be drawn off in the upper region.
  • the condenser and the hot water outlet are arranged in the upper region of the hot water container.
  • FIGURE is a schematic diagram showing the device for recovering heat from waste water.
  • the device depicted in the drawing is provided in particular for domestic applications in order to extract from the waste water of a sink and/or dishwasher or washing machine the thermal energy contained therein and supply it to a hot water reservoir 4 fed by fresh water.
  • a waste water container 1 collecting the waste water and a heat pump are firstly provided, the heat pump being embodied here as a compression heat pump having a compressor 13 .
  • the evaporator 2 of the heat pump is in thermal contact with the waste water container 1 and the condenser 3 of the heat pump is in thermal contact with the hot water reservoir 4 .
  • the waste water container 1 is provided with an agitating apparatus.
  • the waste water container 1 is implemented as a cylindrical hollow body and is provided both with a waste water inlet 5 and with a waste water outlet 6 .
  • the agitating apparatus has a drive shaft 7 running coaxially in the waste water container 1 and having agitating elements 8 arranged thereon.
  • Said agitating elements 8 can be formed as individual agitating blades or else—in a manner not illustrated in greater detail—by a worm.
  • the agitating elements 8 form a closure means for the waste water.
  • a valve 9 is provided at the waste water outlet 6 as a closure means for the waste water, enabling the waste water container 1 to be emptied as soon as the thermal energy stored in the waste water has been extracted to a sufficient extent.
  • the agitating elements 8 are embodied such that either they are in contact with the wall surface of the waste water container 1 , which necessitates a certain elasticity on the part of the agitating elements 8 , or else they are disposed facing said wall surface with a slight gap.
  • the drive shaft 7 is driven by a small electric motor 10 which—in view of the only small circulation capacity—can be designed for low energy consumption. Said circulation of the waste water not only prevents dirt particles from being deposited, but at the same time the waste water is kept at an even temperature level, with the result that the thermal energy can be extracted more quickly and efficiently via the wall surface of the waste water container 1 .
  • the drive shaft 7 together with the agitating elements 8 and the motor 10 can be embodied as an easily removable structural unit in order in this way to facilitate a nonetheless still occasionally necessary cleaning of the waste water container 1 .
  • the waste water container 1 is arranged inside the device, inclined at an angle with a fall toward the waste water outlet 6 , thereby facilitating the conveyance of dirt particles toward the waste water outlet 6 .
  • a preliminary heat exchanger 11 for the fresh water is provided on the waste water container 1 .
  • Said preliminary heat exchanger 11 is formed by a coiled pipe running in a spiral shape around the housing of the waste water container 1 .
  • the coiled pipe of the evaporator 2 is arranged between the individual coils of the coiled pipe of the preliminary heat exchanger 11 in the manner of a common bifilar winding.
  • the outlet of the preliminary heat exchanger 11 is connected to the inlet of the hot water reservoir 4 , said inlet being arranged in the lower region of the hot water reservoir 4 so that the cooler fresh water collects in the lower region of the hot water reservoir 4 .
  • the condenser 3 and the hot water outlet are located in the upper region of the hot water reservoir 4 so that mixing of the inflowing cold fresh water with the hot water that is to be drawn off at the outlet is avoided to the greatest possible extent.
  • the waste water container 1 , the heat pump and the hot water reservoir 4 are enclosed by a common heat-insulating means 12 , as a result of which the entire device furthermore forms a compact structural unit which replaces the hot water boiler normally arranged under a sink.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Heat-Pump Type And Storage Water Heaters (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
  • Washing And Drying Of Tableware (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
US13/702,598 2010-06-09 2011-05-25 Device for preparing hot water, in particular for domestic applications Abandoned US20130074540A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102010029882.4 2010-06-09
DE102010029882A DE102010029882A1 (de) 2010-06-09 2010-06-09 Vorrichtung zur Warmwasserbereitung insbesondere für Haushaltsanwendungen
PCT/EP2011/058513 WO2011154250A2 (de) 2010-06-09 2011-05-25 Vorrichtung zur warmwasserbereitung insbesondere für haushaltsanwendungen

Publications (1)

Publication Number Publication Date
US20130074540A1 true US20130074540A1 (en) 2013-03-28

Family

ID=44627046

Family Applications (1)

Application Number Title Priority Date Filing Date
US13/702,598 Abandoned US20130074540A1 (en) 2010-06-09 2011-05-25 Device for preparing hot water, in particular for domestic applications

Country Status (6)

Country Link
US (1) US20130074540A1 (ru)
EP (1) EP2580528A2 (ru)
CN (1) CN102918330A (ru)
DE (1) DE102010029882A1 (ru)
RU (1) RU2012153793A (ru)
WO (1) WO2011154250A2 (ru)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2017508127A (ja) * 2014-02-28 2017-03-23 ツィンファ ユニバーシティ 電力ピーキング熱電併給（ｃｈｐ）廃熱回収装置、及びその稼働方法

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT512904B1 (de) * 2012-09-04 2013-12-15 Buchinger Anton Vorrichtung zum Erwärmen von Brauchwasser
CN108519013A (zh) * 2018-03-30 2018-09-11 宁波金名片能源科技有限公司 一种低温废热回收装置
CN108507383B (zh) * 2018-03-30 2019-10-25 宁波金名片能源科技有限公司 一种带动力的水-水换热器
CN108507395A (zh) * 2018-03-30 2018-09-07 宁波金名片能源科技有限公司 低温废热回收装置
CN110500834A (zh) * 2018-05-18 2019-11-26 合肥美的电冰箱有限公司 瞬冷设备

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4207752A (en) * 1978-09-06 1980-06-17 Michael Schwarz Method and apparatus for recovering heat from waste water
US4216659A (en) * 1979-01-15 1980-08-12 French Roger F Thermal system
US4529032A (en) * 1978-06-30 1985-07-16 Molitor Industries, Inc. Method of and apparatus for recovery of waste energy
US4550771A (en) * 1980-11-11 1985-11-05 Morteza Arbabian Waste water heat recovery apparatus
US4601789A (en) * 1983-05-11 1986-07-22 John G. Bjorklund Water purification apparatus
DE3715019A1 (de) * 1987-05-06 1988-11-17 Geiger Maschf Helmut Vorrichtung zur trennung von feststoffen aus fluessigkeiten
US6722421B2 (en) * 1999-01-25 2004-04-20 Mackelvie Winston Drainwater heat exchanger
US20070170270A1 (en) * 2006-01-24 2007-07-26 Spx Corporation Waste water heat recovery system and method
US20100065250A1 (en) * 2006-10-28 2010-03-18 Hans Huber Ag Maschinen-Und Anlagenbau Method and device for transmitting heat between waste water located in a tank and a fluid

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FR1581806A (ru) * 1968-08-08 1969-09-19
BE790058A (nl) * 1971-10-13 1973-04-13 Terlet Nv Maschf Verwarmingsinrichting
DE2625157A1 (de) 1976-06-04 1977-12-08 Bogner Und Huber Gmbh & Co San Abwasserwaerme-rueckgewinnungsanlage
DE2801638A1 (de) 1978-01-16 1979-07-19 Hermann Etscheid Abwasserbehaelter mit einem verdampfer fuer eine waermepumpe zur waermerueckgewinnung
DE2845677A1 (de) * 1978-10-20 1980-04-30 Bero En Beratung Und Organisat Vorrichtung zur waermerueckgewinnung aus abwaessern
DE3006119A1 (de) 1980-02-19 1981-08-20 Hans 5810 Witten Luka Waermeaustauscher mit waermepumpe zur rueckgewinnung der waermeenergie von abwasser
IT1154500B (it) 1982-03-03 1987-01-21 Indesit Dispositivo di recupero del calore da acque di uso domestico
DE3337573A1 (de) * 1983-10-15 1985-04-25 Josef 7918 Illertissen Holzner Medienbeschleuniger fuer heizungstechnische umwaelzsysteme magnetkupplungs-kraftschluessig angetrieben fuer hermetisch zu sichernde zirkulations u. solaranlagen zweiteilig ausgefuehrt
CN1259644A (zh) * 1999-01-04 2000-07-12 童夏民 热泵式安全热水器
DE10232700B4 (de) * 2002-07-15 2012-06-14 Frank Meyer zur Heide Aqua-Re-Energie-Trichter

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4529032A (en) * 1978-06-30 1985-07-16 Molitor Industries, Inc. Method of and apparatus for recovery of waste energy
US4207752A (en) * 1978-09-06 1980-06-17 Michael Schwarz Method and apparatus for recovering heat from waste water
US4216659A (en) * 1979-01-15 1980-08-12 French Roger F Thermal system
US4550771A (en) * 1980-11-11 1985-11-05 Morteza Arbabian Waste water heat recovery apparatus
US4601789A (en) * 1983-05-11 1986-07-22 John G. Bjorklund Water purification apparatus
DE3715019A1 (de) * 1987-05-06 1988-11-17 Geiger Maschf Helmut Vorrichtung zur trennung von feststoffen aus fluessigkeiten
US6722421B2 (en) * 1999-01-25 2004-04-20 Mackelvie Winston Drainwater heat exchanger
US20070170270A1 (en) * 2006-01-24 2007-07-26 Spx Corporation Waste water heat recovery system and method
US20100065250A1 (en) * 2006-10-28 2010-03-18 Hans Huber Ag Maschinen-Und Anlagenbau Method and device for transmitting heat between waste water located in a tank and a fluid

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2017508127A (ja) * 2014-02-28 2017-03-23 ツィンファ ユニバーシティ 電力ピーキング熱電併給（ｃｈｐ）廃熱回収装置、及びその稼働方法

Also Published As

Publication number Publication date
DE102010029882A1 (de) 2011-12-15
CN102918330A (zh) 2013-02-06
WO2011154250A2 (de) 2011-12-15
EP2580528A2 (de) 2013-04-17
RU2012153793A (ru) 2014-07-20
WO2011154250A3 (de) 2012-06-28

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Owner name: BSH BOSCH UND SIEMENS HAUSGERAETE GMBH, GERMANY

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:HOLZER, STEFAN;REHFUSS, EVGENI;RENNER, ANDREAS;AND OTHERS;SIGNING DATES FROM 20121112 TO 20121129;REEL/FRAME:029424/0309

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION