EP1026467B1 - Plattenwärmeübertrager für Warmwasserbereitung und -speicherung - Google Patents
Plattenwärmeübertrager für Warmwasserbereitung und -speicherung Download PDFInfo
- Publication number
- EP1026467B1 EP1026467B1 EP00250027A EP00250027A EP1026467B1 EP 1026467 B1 EP1026467 B1 EP 1026467B1 EP 00250027 A EP00250027 A EP 00250027A EP 00250027 A EP00250027 A EP 00250027A EP 1026467 B1 EP1026467 B1 EP 1026467B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- plate
- stack
- water
- plates
- heat exchanger
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
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 saved, with the features of the preamble of claim 1.
- Such a plate heat exchanger is known for example from DE-U-9 421 058.
- 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. from that there are long pipes between the hot water tank and the tap To ensure that hot water is still available when tapping 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 Tap points and back to storage is promoted. That is with one high capital expenditure and high operating costs. Further Disadvantages are that the hot water in the storage tank is not against the Propagation of Legionella and not in the instantaneous water heater Overheating is protected.
- 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 arrives. This prevents the risk of legionella.
- DE-OS 40 35 115 describes an arrangement for the removal of warm or hot drinking 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 countercurrent through the heating water.
- EP 0 819 892 describes a water heater described in EP 0 178 351, which consists of a cylindrical container for the heating water and an in an insert along the wall led pipe coil for the domestic water exists, further developed so 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 diverter valves to prevent the domestic water from overheating 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 plates and stacks 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 in your heat exchanger surfaces are profiled to reduce the turbulence of the heat exchange media flowing between the plates to increase and to enlarge the heat exchanger surfaces.
- Adjacent plates in the stack are at 180 ° to each other in their levels rotated so that they are embossed 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 gaps 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 tap of hot water 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 immediately 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 warm 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 when adhered to of a target temperature range, even if briefly 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.
- 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 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 is also primarily used 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 is sufficient until hot heating water flows 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)
- Heat-Pump Type And Storage Water Heaters (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Description
- Fig. 1
- zeigt die Seitenansicht eines Plattenwärmeübertragers für Wannwasserbereitung
und -speicherung mit den Stapeln 1 und 4 und den Endplatten
2 und 3 . Auf der Endplatte 2 sind die Anschlüsse für Heizwasservor-
und -rücklauf und auf der Endplatte 3 ist der
Temperaturmeßfühler 14 angeordnet .
Die unterschiedliche Breite der wellenförmigen Profilierungen auf der Brauchwasserseite 7 und der Heizwasserseite 8 der Wärmeübertragungsplatten des Stapels 4 hat gegenüber dem Stapel 1 zu unterschiedlich großen Fließspalten geführt bei gleichbleibender Fließspaltdicke. - Fig. 2
- zeigt die Draufsicht auf eine Wärmeübertragungsplatte 5 des Stapels 4 sowie Schnitte durch die Durchbrüche 9 . Drei Durchbrüche sind an jeder Längsseite der Wärmeübertragungsplatte angeordnet . Sie sind jeweils auf einem Kegelstumpf eingestanzt . Je drei Kegelstümpfe sind in jede Seite der Platte eingeprägt . Die wellenförmigen Profilierungen sind jeweils bis zur Hälfte der gewünschten Fließspaltdicke eingeprägt Der schüsselförmig hochgestellte Rand überragt die auf der gleichen Seite befindlichen Profilierungen und Kegelstümpfe . Die gleichen Merkmale hat auch die in
- Fig. 3
- dargestellte Wärmeübertragungsplatte 6 mit dem Unterschied, daß die Profilierungen und Kegelstümpfe in die jeweils andere Seite der Platte eingeprägt sind und die wellenförmigen Profilierungen in eine andere Richtung verlaufen, so daß sich die Profilierungen von benachbarten Platten (5) und (6) im Stapel 4 kreuzen .
- Fig. 4
- gibt einen Überblick über die Anordnung der Endplatten 2 und 3 sowie der Wärmeübertragungsplatten in den Stapeln 1 und 4, über die wechselnden Richtungen der Profilierungen, über die Richtung der in die Wärmeübertragungsplatten eingeprägten Kegelstümpfe, über die Lage der eingestanzten und der weggelassenen Durchbrüche in den Wärmeübertragungsplatten sowie über die Fließrichtung von Brauchwasser und Heizwasser im Plattenwärmeübertrager . Im Unterschied zu den anderen Wärmeübertragungsplatten 5 und 6 in den Stapeln 1 und 4, die grundsätzlich sechs Durchbrüche 9 aufweisen, haben die Wärmeübertragungsplatten 10 und 11 fünf Durchbrüche 9, die Wärmeübertragungsplatte 12 vier Durchbrüche 9 und die Wärmeübertragungsplatte 13 zwei Durchbrüche 9 .
- Fig. 5
- stellt die Platte 13 in der Draufsicht dar, welche nur zwei Durchbrüche hat und eine Profilierung, die im Unterschied zu allen anderen Wärmeübertragerplatten parallel zum Plattenrand verläuft und die für Kanäle Heizwasservor- und -rücklauf verbindet . Auf der Brauchwasserseite dieser Platte befindet sich ein breiterer Fließspalt als bei anderen Platten. Der Plattenrand dieser Wärmeübertragungsplatte 13 ist im Gegensatz zu den anderen Wärmeübertragungsplatten nicht schüsselförmig aufgestellt, sondern schließt im Stapel 4 am Rand der Wärmeübertragungsplatte 12 ab .
- Fig. 6
- zeigt in einem Schnitt durch den Stapel 4 die unterschiedlich großen Fließspalte für Brauchwasser und Heizwasser bei gleicher Dicke der Fließspalte zwischen den Wärmeübertragungsplatten 5 und 6 .
Claims (5)
- Plattenwärmeübertrager für Warmwasserbereitung und - speicherung, bestehend aus rechteckigen Wärmeübertragungsplatten (5, 6, 10, 11, 12, 13) die zwischen zwei dickeren Endplatten (2, 3) gestapelt sind und bei geöffneten Ventilen beidseitig vorzugsweise im Gegenstrom von Heizwasser und Brauchwasser umströmt werden, einen schüsselförmig hochgestellten Rand haben, in deren Wärmeübertragungsflächen zu beiden Seiten Profilierungen eingeprägt sind, die sich bei benachbarten Wärmeübertragungsplatten kreuzen, die in den Ecken Durchbrüche auf Kegelstümpfen mit gemeinsamen Achsen aufweisen, die zur einen oder anderen Seite der Wärmeübertragungsplatten eingeprägt sind, und die an den Berührungsstellen verschweißt oder verlötet sind, dadurch gekennzeichnet, daß die Platten aus zwei Stapeln unterschiedlicher Prägung bestehen, ein erster Stapel hinter der ersten Endplatte (2), die vier Anschlüsse für Heizwasservor- und Heizwasserrücklauf und Frischwasserzulauf und Warmwasserablauf hat, und vor der zweiten Endplatte (3) ein zweiter Stapel (4) aus zwei unterschiedlichen sich abwechselnden Wärmeübertragungsplatten (5, 6), die auf der Brauchwasserseite größere Profilierungen als auf der Heizwasserseite haben, wodurch die zwischen ihnen eingeschlossenen Fließspalte (7) für das Brauchwasser einen größeren Querschnitt aufweisen als die zwischen ihnen eingeschlossenen Fließspalte (8) für das Heizwasser .
- Plattenwärmeübertrager nach Anspruch 1, dadurch gekennzeichnet, daß die Wärmeübertragungsplatten in den Stapeln (1, 4) deckungsgleich sechs Durchbrüche (9) haben mit Ausnahme der letzten Platte (10) des ersten Stapels (1) und der ersten Platte (11) des zweiten Stapels (4), die fünf Durchbrüche haben, sowie der vorletzten Platte (12) des zweiten Stapels (4) mit vier Durchbrüchen und der letzten Platte (13) des zweiten Stapels (4) mit zwei Durchbrüchen.
- Plattenwärmeübertrager nach Anspruch 1 und 2, dadurch gekennzeichnet, daß die letzte Platte (13) des zweiten Stapels (4) im Unterschied zu den anderen Wärmeübertragungsplatten des zweiten Stapels (4) in ihrer Wärmeübertragungsfläche nur eine Profilierung hat, die parallel zur Längsseite der Platte (13) eingeprägt ist und die Kanäle für Heizwasservor- und -rücklauf verbindet, die durch die mit Durchbrüchen versehenen Kegelstümpfe der anderen Wärmeübertragungsplatten (5, 6) gebildet werden, und daß sich im Fließspalt zwischen der vorletzten Platte (12) und der letzten Platte (13) des zweiten Stapels (4) nur Brauchwasser befindet .
- Plattenwärmeübertrager nach Anspruch 1 bis 3, dadurch gekennzeichnet, daß die Profilierungen einen sinus- , halbkreis- oder trapezförmigen Querschnitt haben und mit Ausnahme der Profilierung in der letzten Platte (13) des zweiten Stapels (4) wellenförmig in die Wärmeübertragungsflächen eingeprägt sind.
- Plattenwärmeübertrager nach Anspruch 1, dadurch gekennzeichnet, daß an der Endplatte (2) ein oder mehrere Temperaturmeßfühler (14) angeordnet sind.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19906180A DE19906180C2 (de) | 1999-02-05 | 1999-02-05 | Plattenwärmeübertrager für Warmwasserbereitung und -speicherung |
| DE19906180 | 1999-02-05 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP1026467A2 EP1026467A2 (de) | 2000-08-09 |
| EP1026467A3 EP1026467A3 (de) | 2000-12-13 |
| EP1026467B1 true EP1026467B1 (de) | 2003-04-23 |
Family
ID=7897499
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP00250027A Expired - Lifetime EP1026467B1 (de) | 1999-02-05 | 2000-01-27 | Plattenwärmeübertrager für Warmwasserbereitung und -speicherung |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP1026467B1 (de) |
| AT (1) | ATE238532T1 (de) |
| DE (2) | DE19906180C2 (de) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SE518211C2 (sv) * | 1999-12-15 | 2002-09-10 | Swep Int Ab | Varmvattenberedare omfattande en plattvärmeväxlare och en lagringsbehållare |
| 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 |
| ES2188415B1 (es) * | 2001-11-23 | 2004-12-01 | Rotartica, S.A. | Termocambiador compacto de placas. |
| 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 |
Family Cites Families (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2214711C3 (de) * | 1972-03-25 | 1979-08-23 | Egon 8222 Ruhpolding Laforce | Brauchwasserbereiter |
| DE2605994C2 (de) * | 1976-02-14 | 1986-07-10 | Helmut 7100 Heilbronn Bälz | Warmwasserbereitungsanlage |
| EP0178351B1 (de) * | 1984-10-15 | 1988-05-04 | Plaatverwerkende Industrie van Wijk en Boerma B.V. | Wassererhitzer z.B. Verbrauchswarmwasserbereiter |
| DE3622139A1 (de) * | 1986-07-02 | 1988-01-21 | Albert Gohl Sanitaere Anlagen | Wasserversorgungsanlage |
| AT393162B (de) * | 1987-07-13 | 1991-08-26 | Broeckl Gerhard Ing | Plattenwaermeaustauscher mit besonderem profil der waermeaustauschzone |
| DE4035115C2 (de) * | 1990-03-12 | 1993-11-04 | Sandler Energietechnik | Anordnung zum aufheizen und zum bereitstellen von warmem oder heissem brauchwasser von trinkwasserqualitaet |
| DE9216958U1 (de) * | 1992-12-12 | 1993-02-04 | Viessmann Werke GmbH & Co, 3559 Allendorf | Doppelmantelspeicher |
| DE4300292C2 (de) * | 1993-01-08 | 1995-11-16 | C T C Waermetauscher Gmbh | Anlage zur Warmwasserversorgung |
| 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 |
| DE19628773A1 (de) * | 1996-07-17 | 1998-01-22 | Kme Schmoele Gmbh | Wärmetauscher zur Brauchwasserbereitung |
| DE29614411U1 (de) * | 1996-08-20 | 1997-12-18 | Robert Bosch Gmbh, 70469 Stuttgart | Warmwasserspeicher |
| AT406193B (de) * | 1996-10-16 | 2000-03-27 | Vaillant Gmbh | Brauchwasserheizer |
| DE19721745C1 (de) * | 1997-05-24 | 1998-11-05 | Viessmann Werke Kg | Speicher-Durchlauferhitzer |
-
1999
- 1999-02-05 DE DE19906180A patent/DE19906180C2/de not_active Expired - Lifetime
-
2000
- 2000-01-27 DE DE50001824T patent/DE50001824D1/de not_active Expired - Lifetime
- 2000-01-27 AT AT00250027T patent/ATE238532T1/de not_active IP Right Cessation
- 2000-01-27 EP EP00250027A patent/EP1026467B1/de not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| EP1026467A2 (de) | 2000-08-09 |
| DE50001824D1 (de) | 2003-05-28 |
| DE19906180C2 (de) | 2003-02-06 |
| ATE238532T1 (de) | 2003-05-15 |
| DE19906180A1 (de) | 2000-08-10 |
| EP1026467A3 (de) | 2000-12-13 |
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