EP0913651B1 - Wärmetauscherelement mit hohem Wirkungsgrad für einen Heizkörper in einem Gliederheizkessel - Google Patents
Wärmetauscherelement mit hohem Wirkungsgrad für einen Heizkörper in einem Gliederheizkessel Download PDFInfo
- Publication number
- EP0913651B1 EP0913651B1 EP98440235A EP98440235A EP0913651B1 EP 0913651 B1 EP0913651 B1 EP 0913651B1 EP 98440235 A EP98440235 A EP 98440235A EP 98440235 A EP98440235 A EP 98440235A EP 0913651 B1 EP0913651 B1 EP 0913651B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- baffle plate
- wall
- chicane
- exchange element
- internal chamber
- 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
- 238000010438 heat treatment Methods 0.000 title description 6
- 239000004576 sand Substances 0.000 claims description 9
- 238000000465 moulding Methods 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 3
- 230000000630 rising effect Effects 0.000 claims description 2
- 239000002826 coolant Substances 0.000 claims 3
- 239000007788 liquid Substances 0.000 claims 3
- 239000012530 fluid Substances 0.000 abstract description 7
- 238000005192 partition Methods 0.000 abstract 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 11
- 238000004519 manufacturing process Methods 0.000 description 6
- 239000000567 combustion gas Substances 0.000 description 5
- 239000007789 gas Substances 0.000 description 4
- 230000006866 deterioration Effects 0.000 description 3
- 239000013529 heat transfer fluid Substances 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 210000003298 dental enamel Anatomy 0.000 description 2
- 238000005304 joining Methods 0.000 description 2
- 208000031968 Cadaver Diseases 0.000 description 1
- 229910001018 Cast iron Inorganic materials 0.000 description 1
- 241001508691 Martes zibellina Species 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 206010000496 acne Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 230000001143 conditioned effect Effects 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 229910003460 diamond Inorganic materials 0.000 description 1
- 239000010432 diamond Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 235000021183 entrée Nutrition 0.000 description 1
- 239000003517 fume Substances 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229940012982 picot Drugs 0.000 description 1
- 230000003252 repetitive effect Effects 0.000 description 1
- 238000010079 rubber tapping Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000003313 weakening effect Effects 0.000 description 1
Images
Classifications
-
- 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
- F24H1/00—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
- F24H1/22—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating
- F24H1/38—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating with water contained in separate elements, e.g. radiator-type element
-
- 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
- F24H9/00—Details
- F24H9/0005—Details for water heaters
- F24H9/001—Guiding means
- F24H9/0015—Guiding means in water channels
Definitions
- Underfloor heating and certain elements water circulation heaters for rooms and premises allow to use water for heating so-called low temperature lying in the range 20 ° C-35 ° C.
- the ideal in terms of yield is to directly use the water coming out of the boiler brought to these temperatures considered low in the field of heating.
- Boilers serving water at such low temperature condense in the downstream part of the path combustion gases causing the disadvantages that we know: corrosion by acid condensates causing deterioration of the exchanger elements, difficulties in collecting and disposing of condensates.
- the structures overlap each other to achieve a suitable deceleration of gases and fumes from burning that get rid of their calories as they progress along the elements exchangers.
- exchanger elements are produced usually foundry cast iron causing the making fairly complex foundry molds with use of sand cores for the formation of hollow body.
- the two deflectors do not constitute actually a chicane. They just orient slightly the flow in order to decrease the areas dormant. They do not lengthen the course enormously of fluid, a large majority of the flow can even go directly from the inlet to the go out without being diverted. The improvement of heat exchange is therefore very low.
- the object of the invention is to remedy these disadvantages by making an element by foundry heat exchanger with baffle at low risk of manufacturing and free of sand residue after its evacuation phase, exchanger element which presents plus a high heat exchange efficiency.
- the new core of sand ensures low-risk industrial manufacturing fault (s) resulting from deterioration or rupture of the sand core.
- the invention relates to a high efficiency exchanger element for boiler sectionable with an internal structure of baffle bounded by two transverse structures each consisting of an oblique transverse plane and an inclined deflector distant from each other to form a deflector means and a secondary baffle.
- the invention allows after molding to completely evacuate through the orifices existing nucleus residues lodged in re-entrant angles at the ends of the deflectors near the element body exchanger.
- the yield is further increased general of the exchanger element by lengthening the path of water inside the room and removing the sleeping areas at the baffle walls.
- the exchanger element according to the invention is intended for sectional boilers in particular condensing type. However, any application to another type of boiler not under any effort additional inventive comes under the present invention.
- the exchanger element is in the form of a hollow body 1 of general shape approximately rectangular with two lateral faces exchange 2 and 3 provided with pins such as 4 in shape prismatic with rounded 5 end and cross section diamond 6.
- pins constitute protruding points of each exchange side face 2 and 3 arranged in successive transverse rows such as 7 as represented. These rows are offset from those on the exchange side face opposite the adjacent exchanger element and protrude sufficiently of the junction plane between two exchanger elements neighbors 8 and 9 (figure 8) to nest in the free spaces between pimples such as 10 and constitute a flat volume 11 for the passage of combustion gases occupied mainly by spikes. Free spaces 10 form as many passages 12 in chicane for the slowing the evacuation of combustion gases.
- pins 4 There are a majority of pins 4 of identical shape and size, a top line 13 smaller spikes and two columns end 14 and 15 formed by specific pins 16 of general shape in rectangular section arranged in alternating succession with symmetrical presentation.
- junction 17 and 18 The area of pins on each exchange face 2 and 3 is delimited laterally by two edges of junction 17 and 18 projecting including the edges define the junction plane and serve as support for homologous songs from the neighboring exchanger element with interposition of a gasket 19 during assembly-juxtaposition of the heating body (figure 8).
- the flat passage volume 11 formed by the junction of two neighboring exchanger elements 8 and 9 serves as a downdraft chimney for combustion gases.
- the opposite side face is of conformation identical as shown in Figures 7 and 8.
- the exchanger element includes a chamber interior 20 representing a flat interior volume crossed by the heat transfer fluid between an orifice lower inlet 21 and an upper outlet port 22.
- the body of the exchanger element has a upper end 23 shaped as a recess 24.
- This cavity 24 occupying practically the entire width of the exchanger element between an extension of the side wall and the top port block of outlet 22 is intended, with the exchanger elements neighbors 8, 9 and others forming the heating body of the boiler, to constitute a closed hearth at its upper end by the gas burner (not represented).
- the body of the exchanger element is open to its lower end at the side faces exchange 2,3 and put in communication with a condensate collection receptacle (not shown).
- This arrangement is typical of a boiler gas condensing. It conveniently avoids dripping condensate on the burner.
- the interior volume of room 20 has a chicane structure materialized by two large walls slightly oblique one lower 25 and the other upper 26 not joining the wall of the adjacent lateral edge of junction 17 and 18 respectively of the element body exchanger.
- the proximal end of each large wall 25 or 26 is offset from the adjacent wall of the inner chamber 20 of a constituent interval a restricted passage 27 and 28 respectively.
- the large lower oblique walls 25 and upper 26 are slightly inclined rising in the direction of movement of the heat transfer fluid so to favor the passage of the fluid as for a divergent opening (figure 2). This is the case of the large lower wall 25 which delimits a compartment diverge from the lower inlet of the fluid, but also of the large upper wall 26 which does not cut the current, but forces it to a path elongated meander 29.
- the great interest of the invention lies in being able to manufacture the exchanger element by a foundry technique with a core of sand mechanically strong ensuring repetitive quality in industrial manufacturing while improving advantages of the baffle structure interior.
- the nucleus is produced in the form of a compact block 34 without large transverse notch (s).
- edges protruding cross sections such as 43 and 44 along joining edges. These transverse edges at number of at least two on each side edge of junction share length in intervals approximately the same length. They aim to play the role of a picot in order to occupy the space between two pins of an end column.
- the enamel layer provides protection against corrosion and smoothness on surfaces system improving the passage of combustion gases and avoiding the majority of incrustations and deposits.
Claims (6)
- Wärmetauscherelement mit hohem Wirkungsgrad für einen Gliederheizkessel, insbesondere Brennwertkessel , der einerseits auf seinen Wärmetausch-Seitenflächen (2,3) erhabene zahnförmige Elemente (4) aufweist, von denen jedes durch Verbindungsränder (17,18) begrenzt ist, und andererseits eine Innenkammer (20) mit Hindernissen aufweist, die von der wärmeübertragenden Flüssigkeit durchquert wird,
dadurch gekennzeichnet, daß
das Hindernis in eine obere Struktur (26,31) und eine untere Struktur (25,30) mit der Funktion eines Ablenkbleches unterteilt ist, von denen jede aus einem ersten (25,26) und einem zweiten Ablenkblech (30,31) besteht, wobei das erste Ablenkblech (25,26) von der angrenzenden Seitenwand der Innenkammer (20) durch einen sich zwischen dem proximalen Ende des ersten Ablenkbleches (25,26) und der Seitenwand erstreckenden Zwischenraum entfernt ist, um jedes Mal einen eingeschränkten Durchgang (27,28) zu bilden, und wobei das zweite Ablenkblech (30,31) gegenüber dem ersten Ablenkblech (25,26) in Richtung des Eintritts der wärmeübertragenden Flüssigkeit versetzt ist, um jedes Mal mit dem proximalen Ende des ersten Ablenkbleches (25,26) ein sekundäres unteres (32) und oberes Hindernis (33) zu bilden und im Gußformkern die Bildung von Aggregatsandverbindungen (39,40) zu ermöglichen, die diesem eine zusätzliche mechanische Festigkeit verleihen und eine einfache, erleichterte und vollständige Entleerung des Gußsandes nach dem Gießen ermöglichen. - Wärmetauscherelement nach Anspruch 1,
dadurch gekennzeichnet, daß
die ersten Ablenkbleche (25,26) in Vordringrichtung der wärmeübertragenden Flüssigkeit nach oben geneigt sind. - Wärmetauscherelement nach Anspruch 1 oder 2,
dadurch gekennzeichnet, daß
das sekundäre obere Hindernis (33) aus dem proximalen Ende einer oberen Wand (26) des Haupthindernisses und aus einem im Wärmetauscher nach oben geneigten, schrägen Ablenkblech (31) kleiner Länge besteht, das unterhalb der oberen Wand angeordnet ist und mit der angrenzenden Seitenwand der Innenkammer (20) einstückig ausgebildet ist, um mit dem proximalen Ende der oberen Wand (26) einen seitlichen Durchgang (28) zu begrenzen, der in der Nähe der Seitenwand der Kammer gekrümmt verläuft. - Wärmetauscherelement nach dem vorangegangenen Anspruch,
dadurch gekennzeichnet, daß
das schräge Ablenkblech (31) stark nach oben geneigt ist. - Wärmetauscherelement nach Anspruch 1 oder 2,
dadurch gekennzeichnet, daß
das sekundäre untere Hindernis (32) aus dem proximalen Ende einer unteren Wand (25) des Haupthindernisses und aus einem unterhalb der unteren Wand (25) angeordneten und einstückig mit der Wand der Innenkammer (20) ausgebildeten ansteigenden schrägen Ablenkblech (30) kleiner Länge besteht, um einen seitlichen Durchgang (27) zu begrenzen, der in der Nähe der Seitenwand der Innenkammer (20) gekrümmt verläuft. - Wärmetauscherelement nach einem beliebigen der vorangegangenen Ansprüche,
dadurch gekennzeichnet, daß
es das Ergebnis eines Formgusses mit einem Sandkern ist, dessen Querkerben (35,36) und kleine benachbarte, schräge Kerben (37,38) dazu bestimmt sind, die Strukturen des Hindernisses (25,26,30, 31) der Innenkammer (20) zu bilden, die jedes Mal eine Verbindung von Material (39,40) zwischen dem zentralen Teil des Kerns und den Schmalseiten desselben begrenzen, um dessen mechanische Festigkeit zu verbessern.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9713881A FR2770625B1 (fr) | 1997-10-31 | 1997-10-31 | Element echangeur de chaleur a haut rendement destine a constituer le corps de chauffe d'une chaudiere sectionnable |
FR9713881 | 1997-10-31 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0913651A1 EP0913651A1 (de) | 1999-05-06 |
EP0913651B1 true EP0913651B1 (de) | 2001-09-12 |
Family
ID=9513040
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP98440235A Expired - Lifetime EP0913651B1 (de) | 1997-10-31 | 1998-10-23 | Wärmetauscherelement mit hohem Wirkungsgrad für einen Heizkörper in einem Gliederheizkessel |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0913651B1 (de) |
AT (1) | ATE205589T1 (de) |
DE (1) | DE69801631T2 (de) |
FR (1) | FR2770625B1 (de) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6968892B1 (en) | 1998-06-12 | 2005-11-29 | Chart Heat Exchangers Limited | Heat exchanger |
FR2791128A1 (fr) * | 1999-03-19 | 2000-09-22 | Dietrich Thermique | Element echangeur de chaleur a picots pour chaudiere sectionnnable |
CN104165460A (zh) * | 2013-05-19 | 2014-11-26 | 天津山姆燃气设备有限公司 | 一种分流补水锅片 |
EP3425301A1 (de) * | 2017-07-07 | 2019-01-09 | Bekaert Combustion Technology B.V. | Wärmetauscherelement |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3622266A1 (de) * | 1985-07-30 | 1987-02-12 | Vaillant Joh Gmbh & Co | Verfahren zur herstellung eines waermetauschers aus aluminium und anwendung des waermetauschers als gusskesselglied |
ATA206886A (de) * | 1986-07-31 | 1990-08-15 | Vaillant Gmbh | Kesselglied |
ATA291A (de) * | 1991-01-02 | 1994-09-15 | Vaillant Gmbh | Atmosphärischer gliederkessel |
-
1997
- 1997-10-31 FR FR9713881A patent/FR2770625B1/fr not_active Expired - Fee Related
-
1998
- 1998-10-23 EP EP98440235A patent/EP0913651B1/de not_active Expired - Lifetime
- 1998-10-23 AT AT98440235T patent/ATE205589T1/de not_active IP Right Cessation
- 1998-10-23 DE DE69801631T patent/DE69801631T2/de not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
ATE205589T1 (de) | 2001-09-15 |
FR2770625B1 (fr) | 1999-12-17 |
DE69801631D1 (de) | 2001-10-18 |
EP0913651A1 (de) | 1999-05-06 |
DE69801631T2 (de) | 2002-06-27 |
FR2770625A1 (fr) | 1999-05-07 |
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