EP1026467A2 - Echangeur de chaleur à plaques pour préparation et stockage d'eau chaude - Google Patents

Echangeur de chaleur à plaques pour préparation et stockage d'eau chaude Download PDF

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Publication number
EP1026467A2
EP1026467A2 EP00250027A EP00250027A EP1026467A2 EP 1026467 A2 EP1026467 A2 EP 1026467A2 EP 00250027 A EP00250027 A EP 00250027A EP 00250027 A EP00250027 A EP 00250027A EP 1026467 A2 EP1026467 A2 EP 1026467A2
Authority
EP
European Patent Office
Prior art keywords
plate
stack
water
heat transfer
openings
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.)
Granted
Application number
EP00250027A
Other languages
German (de)
English (en)
Other versions
EP1026467A3 (fr
EP1026467B1 (fr
Inventor
Peter Rehberg
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.)
Patente Rehberg Lauer
Original Assignee
Patente Rehberg Lauer
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 Patente Rehberg Lauer filed Critical Patente Rehberg Lauer
Publication of EP1026467A2 publication Critical patent/EP1026467A2/fr
Publication of EP1026467A3 publication Critical patent/EP1026467A3/fr
Application granted granted Critical
Publication of EP1026467B1 publication Critical patent/EP1026467B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F3/00—Plate-like or laminated elements; Assemblies of plate-like or laminated elements
    • F28F3/02—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations
    • F28F3/04—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being integral with the element
    • F28F3/042—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being integral with the element in the form of local deformations of the element
    • F28F3/046—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being integral with the element in the form of local deformations of the element the deformations being linear, e.g. corrugations
    • 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
    • F28D9/00—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F28D9/0031—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one heat-exchange medium being formed by paired plates touching each other
    • F28D9/0043—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one heat-exchange medium being formed by paired plates touching each other the plates having openings therein for circulation of at least one heat-exchange medium from one conduit to another
    • F28D9/005—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one heat-exchange medium being formed by paired plates touching each other the plates having openings therein for circulation of at least one heat-exchange medium from one conduit to another the plates having openings therein for both heat-exchange media

Definitions

  • the invention relates to a plate heat exchanger with the hot water can be prepared and stored using rectangular heat transfer plates exists, which are stacked between two thicker end plates and with the valves open on both sides in counterflow of heating water and Process water flows around, a bowl-shaped raised rim have, whose heat exchanger surfaces are provided with profiles that intersect at adjacent heat transfer plates that are in the corners Have breakthroughs on truncated cones with common axes, on the one hand or other side of the heat transfer plates are embossed, and the places where they touch each other in the stack, welded or soldered are.
  • Known water heating systems basically consist of heat exchangers and memory.
  • a flow heater is a pressurized hot water tank assigned . Both are so big that they are in a separate one Space, preferably basement, must be accommodated. Out of it there are long pipes between the hot water tank and the taps. To still ensure that hot water when dispensing and no chilled water reaches the consumer is between the Dispensing points and the storage provided a circulation circuit the hot water from the storage tank to the when the tap is closed Dispensers and back to storage is promoted. That is with one high capital expenditure and high operating costs.
  • process water must not be increased significantly above 70 ° C, because above this temperature the minerals dissolved in the water are strengthened be eliminated and become a scale in the heat exchanger precipitate, the heat transfer deteriorate and the service life shorten the heat exchanger.
  • DE-OS 36 22 139 proposes in a hot water system at least one tap with a controllable water drain valve to be provided by a near the consumer agency arranged temperature sensor when falling below a predetermined Limit temperature is opened. This ensures that no Hot water with a temperature below this setpoint to the consumer reached. This prevents the risk of legionella.
  • DE-OS 40 35 115 describes an arrangement for the removal of warm or hot domestic water of drinking water quality, which is next to one Instantaneous water heater and a store has another smaller store, whose water temperature can be set by the consumer and the is monitored with the help of temperature sensors and a control unit.
  • DE-PS 197 21 745 provided the domestic water of the interior in a spiral to run in counterflow through the heating water.
  • EP 0 819 892 describes a water heater described in EP 0 178 351, which consists of a cylindrical tank for the heating water and an in an insert along the wall led pipe coil for the domestic water exists, further developed in that the heating water the Tanks not in the same direction as the process water, but in countercurrent flowed through to him. This makes heat transfer essential improved.
  • the process water is to be stored in a container be by heating water in a coil that is at the bottom of the Container forms a spiral, heat is supplied. Immediately above the A temperature sensor is arranged on the spiral wall, avoid overheating of the domestic water above the setpoint.
  • Such temperature sensors are part of new water heaters the state of the art. You will be connected to a control unit and steep valves to prevent overheating of the domestic water and thus to reduce scale formation, but also to prevent it subcooling of the domestic water. In the former case the supply of heating water is interrupted by closing a valve, in the second, the heating water inlet valve is opened.
  • heat exchangers Compared to the tanks mentioned, heat exchangers have one greater efficiency, which consist of similar panels and stack are put together.
  • the edges of the mostly rectangular plates are bowl-shaped above their levels and in the corners are embossed on Truncated cone openings formed.
  • Your heat exchanger surfaces are profiled to reduce the turbulence of the heat exchange media flowing between the plates to increase and enlarge the heat exchanger surfaces.
  • Adjacent plates in the stack are at 180 ° to each other in their levels rotated so that they are impressed at an acute angle to the axes of the plates Cross profiles, which keeps the panels at a distance become .
  • the height of the profiles corresponds to half the thickness of the Flow gaps between the plates.
  • the stacked plates are soldered or welded at the points of contact, or the plates are held together by screw connections and provided with seals at the edges.
  • the flow gaps between the plates are alternately used water or heating water flows through.
  • the counterflow is preferred, because there is a heat gradient over the entire length of the flow gap exists, when the fresh water enters the largely cooled Heating water and when the hot water emerges to the inflowing Heating water.
  • EP 0 837 287 relates to such a plate heat exchanger, their four connections for heating water supply and return as well as for Fresh water supply and hot water discharge on one side of the plate stack are arranged. This makes installation in a thermal bath easier.
  • Coaxial with the cold water inlet is a temperature-dependent NTC or PTC resistor arranged when the hot water is drawn on the incoming fresh water reacts and the heating device or the Heating water inflow activated.
  • this monitoring device cannot ensure that warm water to the consumer when the tap is opened Is available and not cooled domestic water and that the domestic water does not exceed a target temperature. That can be done with the known prior art achieved only by a storage container be, the hot water temperature constantly by temperature sensor is monitored and regulated by means of a control unit. For one such a storage container is not sufficient in modern thermal baths Space available. Another problem is that the heating water cools between a water heater and the water heater and then cooled heating water first enters the storage tank. Both conventional storage tanks, this cold heating water mixes with the stored hot heating water and cools the stored hot domestic water below the permissible target temperature.
  • the object of the invention is to design a plate heat exchanger in such a way that that it not only prepares hot water, but if it is observed a target temperature range, even if it is temporary cooled heating water flows in, so that when tapping always immediately Hot water is available in the desired temperature, which Legionella risk is averted and scale formation is avoided.
  • a plate heat exchanger conventional design between its reinforced end plates another plate stack is arranged, the heat transfer plates differ from the first stack in that they are on the domestic water side have larger profiles and thus flow gaps than on the heating water side.
  • On the end plate delimiting this stack are a or more temperature sensors arranged via a control unit Open the control valve for the inlet of heating water when the domestic water falls below a set point temperature, and it closes when the temperature exceeds another setpoint.
  • the lower setpoint is preferred 45 ° C and chosen as the upper 60 ° C.
  • Another effect is that short-term disturbances caused by feeding of chilled heating water can occur due to the in the plate heat exchanger stored hot domestic water can be bridged can .
  • the stored hot water is not only by the Insulation surrounding the plate heat exchanger is protected from cooling down.
  • the narrow flow gaps of the plate heat exchanger prevent that Mix cooled heating water with the stored warm heating water and cool it down. It also primarily serves as a memory Pile more hot domestic water stored than heating water. His Storage volume is dimensioned so that the hot domestic water stored in it sufficient for hot heating water to flow in.
  • the additional effort for a second stack of heat transfer plates is partially in the plate heat exchanger according to the invention compensated by the fact that the heating water when dispensing hot water no cold process water, but already heated process water flows against.
  • the heating water After passing through the first stack, the heating water becomes the second Stack fed to the end plate adjacent to it.
  • the cold service water and the heating water return are on the first Stack passed.
  • the heat transfer plates provided with six openings, except the last one Plate of the first stack and the first plate of the second stack, the five breakthroughs received, as well as the penultimate plate of the second stack with four and the last plate of the second stack with two openings.
  • the circular openings are on truncated cones, which lead to the one or the other side of a heat exchanger plate are stamped.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
  • Heat-Pump Type And Storage Water Heaters (AREA)
EP00250027A 1999-02-05 2000-01-27 Echangeur de chaleur à plaques pour préparation et stockage d'eau chaude Expired - Lifetime EP1026467B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19906180 1999-02-05
DE19906180A DE19906180C2 (de) 1999-02-05 1999-02-05 Plattenwärmeübertrager für Warmwasserbereitung und -speicherung

Publications (3)

Publication Number Publication Date
EP1026467A2 true EP1026467A2 (fr) 2000-08-09
EP1026467A3 EP1026467A3 (fr) 2000-12-13
EP1026467B1 EP1026467B1 (fr) 2003-04-23

Family

ID=7897499

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00250027A Expired - Lifetime EP1026467B1 (fr) 1999-02-05 2000-01-27 Echangeur de chaleur à plaques pour préparation et stockage d'eau chaude

Country Status (3)

Country Link
EP (1) EP1026467B1 (fr)
AT (1) ATE238532T1 (fr)
DE (2) DE19906180C2 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003517558A (ja) * 1999-12-15 2003-05-27 スウエプ インターナシヨナル アーベー 板状熱交換器と温水貯蔵コンテナを備える湯沸器
WO2003046461A1 (fr) * 2001-11-23 2003-06-05 Rotartica, S.A. Echangeur thermique a plaques

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10001065C2 (de) * 2000-01-13 2002-11-21 Ballard Power Systems Plattenstapel-Wärmeübertrager, insbesondere zur Verwendung als Reformierungsreaktor
DE10049890B4 (de) * 2000-10-10 2007-02-22 Behr Gmbh & Co. Kg Stapelscheiben-Wärmeübertrager
DE10320812B4 (de) * 2003-05-08 2007-03-01 Gea Wtt Gmbh Plattenwärmeübertrager mit einwandigen und doppelwandigen Wärmeübertragerplatten
JP2018084393A (ja) * 2016-11-25 2018-05-31 株式会社ノーリツ 熱交換器及び貯湯給湯装置

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2214711A1 (de) 1972-03-25 1973-10-04 Egon Laforce Heisswasserbereiter
DE2605994A1 (de) 1976-02-14 1977-08-25 Baelz Gmbh Helmut Warmwasserbereitungsanlage
EP0178351A1 (fr) 1984-10-15 1986-04-23 Plaatverwerkende Industrie van Wijk en Boerma B.V. Chauffe-eau, par exemple chaudière d'eau sanitaire
DE3622139A1 (de) 1986-07-02 1988-01-21 Albert Gohl Sanitaere Anlagen Wasserversorgungsanlage
DE4035115A1 (de) 1990-03-12 1991-09-19 Sandler Energietechnik Anordnung zur entnahme von warmen oder heissem brauchwasser von trinkwasserqualitaet aus einer heizanlage
EP0602349A1 (fr) 1992-12-12 1994-06-22 VIESSMANN WERKE GmbH & CO. Accumulateur à enveloppe double pour la préparation et accumulation d'eau chaude sanitaire
DE4300292A1 (de) 1993-01-08 1994-07-14 C T C Waermetauscher Gmbh Warmwasserversorgung
EP0819892A2 (fr) 1996-07-17 1998-01-21 KME Schmöle GmbH Echangeur de chaleur pour la production d'eau sanitaire
EP0825386A2 (fr) 1996-08-20 1998-02-25 Robert Bosch Gmbh Accumulateur d'eau chaude
EP0837287A2 (fr) 1996-10-16 1998-04-22 Joh. Vaillant GmbH u. Co. Chauffe-eau sanitaire
DE19721745C1 (de) 1997-05-24 1998-11-05 Viessmann Werke Kg Speicher-Durchlauferhitzer

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT393162B (de) * 1987-07-13 1991-08-26 Broeckl Gerhard Ing Plattenwaermeaustauscher mit besonderem profil der waermeaustauschzone
IT1263611B (it) * 1993-02-19 1996-08-27 Giannoni Srl Scambiatore di calore a piastre
IT1271978B (it) * 1993-03-05 1997-06-10 Giannoni Srl Gruppo scambiatore a piastre dispositivo di controllo e relativo scambiatore.
DE9421058U1 (de) * 1994-01-20 1995-03-23 Viessmann Werke Gmbh & Co, 35108 Allendorf Durchflußwärmetauscher, insbesondere Brauchwasserspeicher
DE4431413C2 (de) * 1994-08-24 2002-10-10 Rehberg Michael Plattenwärmetauscher für flüssige und gasförmige Medien
DE59600935D1 (de) * 1995-05-10 1999-01-21 Laengerer & Reich Gmbh & Co Plattenwärmetauscher

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2214711A1 (de) 1972-03-25 1973-10-04 Egon Laforce Heisswasserbereiter
DE2605994A1 (de) 1976-02-14 1977-08-25 Baelz Gmbh Helmut Warmwasserbereitungsanlage
EP0178351A1 (fr) 1984-10-15 1986-04-23 Plaatverwerkende Industrie van Wijk en Boerma B.V. Chauffe-eau, par exemple chaudière d'eau sanitaire
DE3622139A1 (de) 1986-07-02 1988-01-21 Albert Gohl Sanitaere Anlagen Wasserversorgungsanlage
DE4035115A1 (de) 1990-03-12 1991-09-19 Sandler Energietechnik Anordnung zur entnahme von warmen oder heissem brauchwasser von trinkwasserqualitaet aus einer heizanlage
EP0602349A1 (fr) 1992-12-12 1994-06-22 VIESSMANN WERKE GmbH & CO. Accumulateur à enveloppe double pour la préparation et accumulation d'eau chaude sanitaire
DE4300292A1 (de) 1993-01-08 1994-07-14 C T C Waermetauscher Gmbh Warmwasserversorgung
EP0819892A2 (fr) 1996-07-17 1998-01-21 KME Schmöle GmbH Echangeur de chaleur pour la production d'eau sanitaire
EP0825386A2 (fr) 1996-08-20 1998-02-25 Robert Bosch Gmbh Accumulateur d'eau chaude
EP0837287A2 (fr) 1996-10-16 1998-04-22 Joh. Vaillant GmbH u. Co. Chauffe-eau sanitaire
DE19721745C1 (de) 1997-05-24 1998-11-05 Viessmann Werke Kg Speicher-Durchlauferhitzer

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003517558A (ja) * 1999-12-15 2003-05-27 スウエプ インターナシヨナル アーベー 板状熱交換器と温水貯蔵コンテナを備える湯沸器
EP1238231B2 (fr) † 1999-12-15 2007-05-16 SWEP International AB Chauffe-eau comprenant un echangeur a plaques et un reservoir d'eau chaude
WO2003046461A1 (fr) * 2001-11-23 2003-06-05 Rotartica, S.A. Echangeur thermique a plaques
ES2188415A1 (es) * 2001-11-23 2003-06-16 Rotartica S A Termocambiador compacto de placas.

Also Published As

Publication number Publication date
EP1026467A3 (fr) 2000-12-13
ATE238532T1 (de) 2003-05-15
DE50001824D1 (de) 2003-05-28
DE19906180C2 (de) 2003-02-06
DE19906180A1 (de) 2000-08-10
EP1026467B1 (fr) 2003-04-23

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