EP0493665B2 - Wärmeübertrager und Verfahren zur Herstellung einer Lamelle für einen Wärmeübertrager - Google Patents
Wärmeübertrager und Verfahren zur Herstellung einer Lamelle für einen Wärmeübertrager Download PDFInfo
- Publication number
- EP0493665B2 EP0493665B2 EP91119203A EP91119203A EP0493665B2 EP 0493665 B2 EP0493665 B2 EP 0493665B2 EP 91119203 A EP91119203 A EP 91119203A EP 91119203 A EP91119203 A EP 91119203A EP 0493665 B2 EP0493665 B2 EP 0493665B2
- Authority
- EP
- European Patent Office
- Prior art keywords
- cutouts
- heat exchanger
- lamella
- exchanger according
- hot
- 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
- 241000446313 Lamella Species 0.000 title claims description 19
- 238000000034 method Methods 0.000 title claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 21
- 238000012546 transfer Methods 0.000 claims description 3
- 239000002912 waste gas Substances 0.000 claims 4
- 239000008236 heating water Substances 0.000 description 8
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 6
- 229910052802 copper Inorganic materials 0.000 description 6
- 239000010949 copper Substances 0.000 description 6
- 238000011144 upstream manufacturing Methods 0.000 description 5
- 241000270295 Serpentes Species 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 229910000365 copper sulfate Inorganic materials 0.000 description 1
- ARUVKPQLZAKDPS-UHFFFAOYSA-L copper(II) sulfate Chemical compound [Cu+2].[O-][S+2]([O-])([O-])[O-] ARUVKPQLZAKDPS-UHFFFAOYSA-L 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
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
- F28F13/00—Arrangements for modifying heat-transfer, e.g. increasing, decreasing
- F28F13/06—Arrangements for modifying heat-transfer, e.g. increasing, decreasing by affecting the pattern of flow of the heat-exchange media
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F1/00—Tubular elements; Assemblies of tubular elements
- F28F1/10—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
- F28F1/12—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element
- F28F1/24—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending transversely
- F28F1/32—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending transversely the means having portions engaging further tubular elements
- F28F1/325—Fins with openings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
- F28F9/26—Arrangements for connecting different sections of heat-exchange elements, e.g. of radiators
Definitions
- the invention relates to a heat exchanger according to the genus of the main claim.
- a known heat exchanger of this type AT-A-391 022 is about the exhaust gas temperature to prevent condensation to bring sufficient height, a variable number removable slats available.
- As another Measure is proposed, which is between adjacent tubes extending walls make the slats removable in certain areas, around their heat transfer surface if necessary to reduce and thereby the exhaust gas temperature to increase.
- This version requires a subsequent one Processing of the fully assembled heat exchanger.
- slats like fixed and removable slats or Slats with break-out wall parts required.
- the arrangement according to the invention characteristic features of the main claim has the advantage that the Recesses can influence the heat flow so that a predeterminable temperature gradient trained along the lamella in the flow direction. Areas can be very different Avoid temperature and the maximum temperature difference at the opposite ends of the Keep the slat small.
- the ratios of the opening angles move as well as the relationships from the distance of one Recess to the edge of a hot water pipe and its radius in certain areas corrosion behavior by reducing the Temperature gradients in the flow direction of the Improve exhaust gas.
- FIG. 1 shows a heat exchanger in side view
- Figure 2 is a plan view of the heat exchanger, partly cut according to line II-II in Figure 1.
- Figure 3 shows a lamella and Figure 4 a design of the recesses.
- Figure 5a to e are versions of different recesses shown and Figure 5f shows a variant of Hot water pipe according to Figure 1.
- FIG. 1 shows a typical application a second-circuit heat exchanger 10 with one in the heating water pipes 12 led water pipe coil 14.
- the water flows through an inlet 15 an upper coil 16 consisting of tubes 17 and horizontal elbows 18, over a vertical one Manifold 19 in a lower serpent 20, consisting of tubes 21 and horizontal Bends (not shown in the drawing) and from there via an outlet 24 into the not shown Service water network.
- the heating circuit without external circulation can essentially be operated from an inlet chamber 26, a collecting or. Deflection chamber 27, an outlet chamber 28 and a heating network, not shown.
- the Chambers 26 and 27 or 27 and 28 are respectively connected to each other via parallel heating water pipes 12.
- the process water pipe coil 14 is by means of Copper profile rails 30 against the heating water pipes 12 supported.
- the copper profile rails 30 can on both sides between the upstream edge of the Edelwasserrohres 12 and the tubes 21 of the lower Snake 20 and the tubes 17 of the top Snake 16 and the downstream end of the Heating water pipes 12 may be inserted ( Figure 1) or only in the upstream area (Figure 5f), wherein the tubes 17 of the upper coil 16 directly to the downstream edge of the heating water pipes 12 pressed will.
- the heating water pipes 12 are surrounded by one Variety of slats 32, which passages 34 own the shape of the heating water pipes are adapted and incorporate them. Between the exhaust gas upstream edge 36 and the exhaust gas upstream edge 38 of the passage 34 there are recesses 40, 41 between which a web 42 is formed.
- the slats 32 can be made of copper or other materials consist. When using copper, the Heat spread on the lamella 32 through the Cutouts are so hampered that despite none of the high thermal conductivity coefficient of copper Areas with temperatures below the dew point temperature form.
- the shape of the cutouts 40, 41 is matched to the shape of the edge 38 on the exhaust gas inflow side and runs at a distance 44 therefrom.
- the opening angles ⁇ 1 and ⁇ 2 seen from the lower center 46 limit the cutouts 40, 41 and the web 42 in the circumferential direction.
- the size of the area of the recesses 48 is determined by the performance of the water heater, into the one equipped with these slats Heat exchanger is installed, determined.
- FIG. 5 shows other possible shapes and Positions for the recesses controlling the heat flow 40, 41 and the recess 48 for power adjustment.
- FIG. 5a shows a recess 60 in the form of an arc
- FIG. 5b an arcuate Recess 62 with a web
- the Figure 5c with an arcuate recess 64 two webs 65.
- Figure 5d is a straight recess 66 and in FIG. 5e several are straight, recesses 68 distributed in the arc are shown.
- the recesses intended for performance adjustment can of triangular shape 70, more rectangular Form 71 to 73 or round form 74 and can both on the exhaust gas inflow side Edge 36, the exhaust gas downstream edge 50 as also bring in the middle of the slat, taking it is not necessary, the recesses 70 to 74 always to position between the passages. It is also several different shapes possible combine.
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Geometry (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Description
Claims (12)
- Wärmeübertrager, mit von einer Vielzahl von Lamellen besetzten Rohren und mit in die Lamellen eingebrachten, den Wärmeübergang beeinflussenden Aussparungen, dadurch gekennzeichnet, daß die Aussparungen (40, 41) in die Lamellen (32) im Bereich hoher Temperaturen, im wesentlichen zwischen während des Betriebs vom Abgas angeströmten Kanten (36) der Lamellen (32) und vom Abgas angeströmten Rändern (38) der die Rohre (12) aufnehmenden Durchgänge (34) der Lamellen (32), eingebracht sind zur Erzeugung einer gleichmäßigen Temperaturverteilung und einer möglichst geringen maximalen Temperaturdifferenz auf der Lamelle (32), wobei zwischen den angeströmten kanten und den Aussparungen keine Durchgänge (34) vorhanden sind.
- Wärmeübertrager nach Anspruch 1, dadurch gekennzeichnet daß die Aussparungen (40, 41) überwiegend im anströmseitigen Bereich (36) der Lamelle (32) vorgesehen sind.
- Wärmeübertrager nach Anspruch 1 oder 2, dadurch gekennzeichnet daß die Aussparungen (40, 41) halbkreisförmig um die Warmwasserrohre (12) verteilt sind.
- Wärmeübertrager nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß um jedes Warmwasserrohr (12) mehrere Aussparungen (40, 41) verteilt sind.
- Wärmeübertrager nach Anspruch 4, dadurch gekennzeichnet, daß zwischen den Aussparungen (40, 41) Stege (42) gebildet sind, wobei mindestens je ein Steg (42) die anströmseitige Kante (36) der Lamelle (32) mit dem dieser zugewandten Rand (38) eines Warmwasserrohres (12) direkt verbindet.
- Wärmeübertrager nach Anspruch 4 oder 5, dadurch gekennzeichnet, daß die Aussparungen (40, 41) regelmäßig verteilt sind und die Verhältnisse der Breiten der Aussparungen (40, 41) und der dazwischenliegenden Stegen (42) konstant sind.
- Wärmeübertrager nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß die Form der Aussparungen (40, 41) der Form der Warmwasserrohre (12) angepaßt ist und die Aussparungen (40, 41) in einem konstanten Abstand vom Rand (38) der Warmwasserrohre (12) angebracht sind.
- Wärmeübertrager nach einem der Ansprüche 6 und 7, dadurch gekennzeichnet, daß die von einem Mittelpunkt (46) eines Warmwasserrohres (12) aus gesehenen Öffnungswinkel α1 und α2 der Stege (42) und der Aussparungen (40, 41) in einem konstanten Verhältnis zueinander stehen.
- Wärmeübertrager nach Anspruch 8, dadurch gekennzeichnet, daß das Verhältnis der Öffnungswinkel α1 zu α2 zwischen 1:7 und 1:10 liegt.
- Wärmeübertrager nach Anspruch 8 oder 9, dadurch gekennzeichnet daß das Verhältnis zwischen dem Abstand einer Aussparung (40, 41) zum Rand (38) eines Warmwasserrohres (12) und dem Radius des Warmwasserrohres 812) zwischen 1:1,5 und 1:2,5, vorzugsweise bei 1:2 liegt.
- Wärmeübertrager nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß Aussparungen (48) zur Leistungsanpassung der Lamelle (32) an den Wärmeübertrager (10) vorgesehen sind.
- Verfahren zum Herstellen einer Lamelle eines Wärmeübertragers nach einem der vorhergehenden Ansprüche, die den Wärmeübergang beeinflussende Aussparungen, im wesentlichen zwischen während des Betriebs vom Abgas angeströmten Kanten (36) der Lamellen (32) und vom Abgas angeströmten Rändern (38) der die Rohre (12) aufnehmenden Durchgänge (34) der Lamellen (32), aufweist, dadurch gekennzeichnet, daß in einem ersten Schritt eine einheitliche Grundlamelle mit Durchgängen (34) für die Rohre (12) hergestellt wird und in einem zweiten Schritt die Aussparungen (40, 41, 48) zur Steuerung des Wärmeflusses und zur Leistungsanpassung der Lamelle (12) an den Wärmeübertrager (10) gestanzt werden.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4042195A DE4042195A1 (de) | 1990-12-29 | 1990-12-29 | Waermeuebertrage und verfahren zur herstellung einer lamelle fuer einen waermeuebertrager |
DE4042195 | 1990-12-29 |
Publications (4)
Publication Number | Publication Date |
---|---|
EP0493665A2 EP0493665A2 (de) | 1992-07-08 |
EP0493665A3 EP0493665A3 (en) | 1992-11-19 |
EP0493665B1 EP0493665B1 (de) | 1995-09-13 |
EP0493665B2 true EP0493665B2 (de) | 1998-04-15 |
Family
ID=6421663
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP91119203A Expired - Lifetime EP0493665B2 (de) | 1990-12-29 | 1991-11-12 | Wärmeübertrager und Verfahren zur Herstellung einer Lamelle für einen Wärmeübertrager |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0493665B2 (de) |
DE (2) | DE4042195A1 (de) |
ES (1) | ES2077142T5 (de) |
PT (1) | PT99947B (de) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE9310827U1 (de) * | 1993-07-06 | 1993-09-23 | Balcke-Dürr AG, 40882 Ratingen | Waermetauscher aus mehreren parallel zueinander angeordneten austauscherrohren |
DE10315966B4 (de) * | 2003-04-08 | 2007-04-05 | Robert Bosch Gmbh | Wärmeübertrager |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB696380A (en) * | 1949-11-25 | 1953-08-26 | Junkers & Co | Improvements in heat exchange apparatus |
DE2813747A1 (de) * | 1978-03-30 | 1979-10-04 | Thermal Waerme Kaelte Klima | Waermetauscherlamelle und anwendungen derselben |
US4738225A (en) * | 1987-06-03 | 1988-04-19 | Juang Jinn C | Heat transfer apparatus for water heater |
AT391022B (de) * | 1987-11-03 | 1990-08-10 | Vaillant Gmbh | Waermetauscher |
-
1990
- 1990-12-29 DE DE4042195A patent/DE4042195A1/de not_active Withdrawn
-
1991
- 1991-11-12 ES ES91119203T patent/ES2077142T5/es not_active Expired - Lifetime
- 1991-11-12 DE DE59106481T patent/DE59106481D1/de not_active Expired - Lifetime
- 1991-11-12 EP EP91119203A patent/EP0493665B2/de not_active Expired - Lifetime
- 1991-12-27 PT PT99947A patent/PT99947B/pt not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
PT99947A (pt) | 1993-11-30 |
DE4042195A1 (de) | 1992-07-02 |
PT99947B (pt) | 1999-05-31 |
ES2077142T3 (es) | 1995-11-16 |
DE59106481D1 (de) | 1995-10-19 |
ES2077142T5 (es) | 1998-06-16 |
EP0493665A3 (en) | 1992-11-19 |
EP0493665A2 (de) | 1992-07-08 |
EP0493665B1 (de) | 1995-09-13 |
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