EP0552122B1 - Heat-exchanger - Google Patents
Heat-exchanger Download PDFInfo
- Publication number
- EP0552122B1 EP0552122B1 EP93460002A EP93460002A EP0552122B1 EP 0552122 B1 EP0552122 B1 EP 0552122B1 EP 93460002 A EP93460002 A EP 93460002A EP 93460002 A EP93460002 A EP 93460002A EP 0552122 B1 EP0552122 B1 EP 0552122B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- coil
- shell
- spacers
- water
- 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
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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
- F28F21/00—Constructions of heat-exchange apparatus characterised by the selection of particular materials
- F28F21/08—Constructions of heat-exchange apparatus characterised by the selection of particular materials of metal
- F28F21/081—Heat exchange elements made from metals or metal alloys
- F28F21/086—Heat exchange elements made from metals or metal alloys from titanium or titanium alloys
-
- 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
- F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
- F28D7/02—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being helically coiled
- F28D7/024—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being helically coiled the conduits of only one medium being helically coiled tubes, the coils having a cylindrical configuration
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F21/00—Constructions of heat-exchange apparatus characterised by the selection of particular materials
- F28F21/06—Constructions of heat-exchange apparatus characterised by the selection of particular materials of plastics material
- F28F21/067—Details
Definitions
- the present invention relates to a tube heat exchanger through which a primary fluid is used for heating a secondary fluid such as swimming pool or sea water.
- Heat exchangers are already known and reference is made, for example, to documents FR-A-2 441 819, FR-A-2 482 717, DE-A-3 038 344, and US-A-4 739 634.
- the exchangers described in these documents consist of a cylindrical body provided with an inlet orifice and an outlet orifice for the secondary fluid. Inside the body, a helical coil is provided, traversed by a primary fluid intended to transfer its calories to the secondary fluid circulating in the body.
- the secondary fluid is circulated as much as possible in contact with the coil.
- the latter is housed in the annular space which is formed between the internal wall of the body and the external wall. an annular ferrule.
- the secondary fluid therefore circulates in a helix between two turns of the coil.
- the object of the invention is therefore to provide a heat exchanger specially intended for heating a corrosive secondary fluid such as swimming pool water or sea water.
- FIG. 1 A heat exchanger according to the invention is shown in FIG. 1 in longitudinal section.
- the base 3 is provided with means, such as holes. 4 for the passage of screws 5, which allow the exchanger to be fixed to the ground.
- a sleeve 6 forming an inlet orifice for the secondary fluid through which the water to be heated, for example water from a swimming pool, is introduced.
- a sleeve 7 forming outlet port through which the water heated in the exchanger returns to the pool.
- the internal diameter of the sleeves 6 and 7 is dimensioned so that the exchanger can be connected to a circuit in which the secondary fluid can circulate, without excessive pressure drop, with relatively large flow rates, that is to say say between 5 and 20 m3 / hour, by means of a pump.
- These diameters are for example of the order of 40 mm.
- a ferrule 8 is provided, made up of a cylindrical tube provided with a radial internal partition 9.
- a coil 10 consisting of a helical tube.
- the coil 10 ends in a bend 11 passing through, with sealing, the cover 2 and has an inlet 12 through which the primary fluid is introduced.
- the coil 10 forms a bend 13 extended by a rectilinear part 14 which also passes through the cover 2 with sealing and opens, in the vicinity of the inlet 12, on an outlet 15 through which the primary fluid leaves after having ceded his calories.
- the rectilinear part 14 also passes through the internal partition 9 of the shell 8.
- the ferrule 8 is fixed to the coil 10 by suitable means (not shown).
- a temperature sensor 16 is mounted, the output signal of which can be used to control the circulation of the primary and secondary fluids in the exchanger.
- the body 1 and the ferrule 8 are made of a plastic-based material, reinforced or not, such as PVC or, advantageously, polyester reinforced with glass fibers.
- the coil 10 is made of titanium.
- spacers 17a are provided between the internal wall of the body 1 and the coil 10, in the form of a vertical strip of small width compared to the diameter of the body 1 and provided with housings for each. turns of the coil 10 and, on the other hand, between the external wall of the shell 8 and the coil 10, spacers 17b being in the form of a strip also of small width compared to the diameter of the shell 8.
- the spacers 17a and 17b keep the coil 10 at a distance of approximately 2 mm from the body 1 and the ferrule 8.
- the function of the spacers 17a and 17b is multiple. It is to facilitate the mounting of the coil 10 which is, once the spacers 17a put in place, in the form of a single rigid piece. It is also to avoid relative movements between, on the one hand, the body 1 and the shell 8 and, on the other hand, the coil 10, movements which are generated by vibrations of pumps and accessories surrounding the exchanger and which can cause friction which deteriorates the elements of the exchanger.
- the spacers 17a and 17b create zones located between the shell 8 and the coil 10 and between the body 1 and the coil 10 which are, from the point of view of corrosion, dead.
- the spacers 17a and 17b create zones located between the shell 8 and the coil 10 and between the body 1 and the coil 10 which are, from the point of view of corrosion, dead.
- the spacers 17a have housings for each turn of the coil 10 makes it possible to overcome the differences in winding diameter of each turn, these differences being compensated for. by the differences in thickness that take, when mounting the exchanger, the spacers 17a between their outer face and their housing.
- the water to be heated flows upwards into the body 1 (arrows A), on the one hand, in a helix between two consecutive turns of the coil 10 and, on the other hand, between the coil 10 and the body 1 or the shell 8.
- the primary fluid flows downward (arrows B), that is to say against the current of the secondary fluid water.
- the primary fluid is, for example, a refrigerant from a heat pump (not shown) but could also be steam or hot water.
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)
- Connection Of Plates (AREA)
- Physical Or Chemical Processes And Apparatus (AREA)
Description
La présente invention concerne un échangeur de chaleur à tubes parcourus par un fluide primaire utilisé pour le réchauffement d'un fluide secondaire tel que de l'eau de piscine ou d'eau de mer.The present invention relates to a tube heat exchanger through which a primary fluid is used for heating a secondary fluid such as swimming pool or sea water.
On connaît déjà des échangeurs de chaleur et on se reportera, à titre d'exemple aux documents FR-A-2 441 819, FR-A-2 482 717, DE-A-3 038 344, et US-A-4 739 634. Les échangeurs décrits dans ces documents sont constitués d'un corps cylindrique pourvu d'un orifice d'arrivée et d'un orifice de sortie du fluide secondaire. A l'intérieur du corps, est prévu un serpentin hélicoïdal parcouru par un fluide primaire destiné à céder ses calories au fluide secondaire circulant dans le corps.Heat exchangers are already known and reference is made, for example, to documents FR-A-2 441 819, FR-A-2 482 717, DE-A-3 038 344, and US-A-4 739 634. The exchangers described in these documents consist of a cylindrical body provided with an inlet orifice and an outlet orifice for the secondary fluid. Inside the body, a helical coil is provided, traversed by a primary fluid intended to transfer its calories to the secondary fluid circulating in the body.
Généralement, afin d'augmenter le rendement du transfert de chaleur, on fait circuler le fluide secondaire le plus en contact possible avec le serpentin. Pour cela, ce dernier est logé dans l'espace annulaire qui est formé entre la paroi interne du corps et la paroi externe d'une virole annulaire. Le fluide secondaire circule donc en hélice entre deux spires du serpentin.Generally, in order to increase the efficiency of the heat transfer, the secondary fluid is circulated as much as possible in contact with the coil. For this, the latter is housed in the annular space which is formed between the internal wall of the body and the external wall. an annular ferrule. The secondary fluid therefore circulates in a helix between two turns of the coil.
Se posent alors des problèmes de corrosion qui, dans la majorité des cas d'utilisation, trouvent leur solution, comme dans les brevets DE-A-3 038 344 et US-A-4 739 634, dans l'adoption d'écarteurs entre le corps externe et la virole.Corrosion problems arise which, in the majority of use cases, find their solution, as in patents DE-A-3 038 344 and US-A-4 739 634, in the adoption of spacers between the external body and the shell.
Néanmoins, compte tenu de l'utilisation particulière à laquelle les échangeurs selon l'invention sont destinés, à savoir le réchauffement d'eau de piscine et d'eau de mer, cette mesure n'est pas suffisante. En effet, l'eau de piscine, contient un agent oxydant, par exemple du chlore, et est donc corrosive.However, given the particular use for which the exchangers according to the invention are intended, namely the heating of swimming pool and sea water, this measure is not sufficient. Pool water contains an oxidizing agent, for example chlorine, and is therefore corrosive.
Le but de l'invention est donc de prévoir un échangeur de chaleur spécialement destiné au réchauffement d'un fluide secondaire corrosif tel que de l'eau de piscine ou de l'eau de mer.The object of the invention is therefore to provide a heat exchanger specially intended for heating a corrosive secondary fluid such as swimming pool water or sea water.
On a trouvé que l'on obtenait des résultats satisfaisants en prévoyant le corps externe dans un matériau à base de matière plastique et le tube du serpentin en titane et de préférence en munissant le serpentin d'écarteurs entre la paroi externe de la virole et la paroi interne du corps.It has been found that satisfactory results are obtained by providing the external body in a plastic material and the tube of the titanium coil and preferably by providing the coil with spacers between the external wall of the shell and the inner wall of the body.
Un échangeur de chaleur selon l'invention est représenté à la Fig. 1 en coupe longitudinale.A heat exchanger according to the invention is shown in FIG. 1 in longitudinal section.
Il comprend donc un corps externe 1 de forme générale cylindrique et fermé, avec étanchéité, à l'extrémité supérieure, par un couvercle 2 et, à sa base, par un socle 3. Le socle 3 est pourvu de moyens, tels que des trous 4 pour le passage de vis 5, qui permettent la fixation de l'échangeur sur le sol.It therefore comprises an external body 1 of generally cylindrical and closed shape, with sealing, at the upper end, by a
A l'extrémité inférieure, dans la paroi cylindrique du corps 1, est prévu un manchon 6 formant orifice d'arrivée du fluide secondaire par lequel est introduite l'eau à réchauffer, par exemple l'eau issue d'une piscine. A l'extrémité supérieure, sur la même génératrice que le manchon 6, est prévu un manchon 7 formant orifice de sortie par lequel l'eau réchauffée dans l'échangeur s'en retourne à la piscine.At the lower end, in the cylindrical wall of the body 1, there is provided a sleeve 6 forming an inlet orifice for the secondary fluid through which the water to be heated, for example water from a swimming pool, is introduced. At the upper end, on the same generator as the sleeve 6, is provided a
Le diamètre interne des manchons 6 et 7 est dimensionné de manière à ce que l'échangeur puisse être raccordé à un circuit dans lequel le fluide secondaire puisse circuler, sans perte de charge excessive, avec des débits relativement importants, c'est-à-dire compris entre 5 et 20 m³/heure, au moyen d'une pompe. Ces diamètres sont par exemple de l'ordre de 40 mm.The internal diameter of the
Le fait de pouvoir faire travailler l'échangeur sous des débits relativement élevés permet d'éviter la formation de dépôts issus de l'eau de piscine et de son système de filtration.Being able to operate the exchanger at relatively high flow rates prevents the formation of deposits from the pool water and its filtration system.
A l'intérieur du corps 1, coaxialement, est prévue une virole 8 constituée d'un tube cylindrique muni d'une cloison interne radiale 9.Inside the body 1, coaxially, a ferrule 8 is provided, made up of a cylindrical tube provided with a radial
Dans l'espace annulaire entre la paroi interne du corps 1 et la paroi externe de la virole 8, est monté un serpentin 10 constitué d'un tube en hélice. A son extrémité supérieure, le serpentin 10 se termine par un coude 11 traversant, avec étanchéité, le couvercle 2 et présente une entrée 12 par laquelle est introduit le fluide primaire. A l'autre extrémité, le serpentin 10 forme un coude 13 prolongé par une partie rectiligne 14 traversant elle aussi le couvercle 2 avec étanchéité et débouchant, au voisinage de l'entrée 12, sur une sortie 15 par laquelle sort le fluide primaire après avoir cédé ses calories. La partie rectiligne 14 traverse également la cloison interne 9 de la virole 8.In the annular space between the internal wall of the body 1 and the external wall of the shell 8, is mounted a
La virole 8 est fixée sur le serpentin 10 par des moyens appropriés (non représentés).The ferrule 8 is fixed to the
A l'extrémité inférieure du corps 1, est monté un capteur de température 16 dont le signal de sortie peut servir à la commande de la circulation des fluides primaire et secondaire dans l'échangeur.At the lower end of the body 1, a
Selon l'invention, le corps 1 et la virole 8 sont constitués en un matériau à base de matière plastique, renforcé ou pas, tel que du PVC ou, avantageusement, du polyester armé de fibres de verre. Le serpentin 10 est en titane.According to the invention, the body 1 and the ferrule 8 are made of a plastic-based material, reinforced or not, such as PVC or, advantageously, polyester reinforced with glass fibers. The
On a prévu, d'une part, entre la paroi interne du corps 1 et le serpentin 10, des écarteurs 17a se présentant sous la forme d'une bande verticale de faible largeur par rapport au diamètre du corps 1 et pourvue de logements pour chacune des spires du serpentin 10 et, d'autre part, entre la paroi externe de la virole 8 et le serpentin 10, des écarteurs 17b se présentant sous la forme d'une bande également de faible largeur par rapport au diamètre de la virole 8. Les écarteurs 17a et 17b maintiennent le serpentin 10 à une distance d'environ 2 mm et du corps 1 et de la virole 8.On the one hand, spacers 17a are provided between the internal wall of the body 1 and the
La fonction des écarteurs 17a et 17b est multiple. Elle est de faciliter le montage du serpentin 10 qui se présente, une fois les écarteurs 17a mis en place, sous la forme d'une unique pièce rigide. Elle est également d'éviter les mouvements relatifs entre, d'une part, le corps 1 et la virole 8 et, d'autre part, le serpentin 10, mouvements qui sont engendrés par des vibrations de pompes et accessoires environnant l'échangeur et qui peuvent entraîner des frottements qui détériorent les éléments de l'échangeur.The function of the
Elle est également de résoudre les problèmes liés à la corrosion, et ceci de deux manières. D'une part, les écarteurs 17a et 17b créent des zones situées entre la virole 8 et le serpentin 10 et entre le corps 1 et le serpentin 10 qui sont, du point du vue de la corrosion, mortes. D'autre part, en aménageant des espaces d'écoulement du fluide secondaire autour du serpentin 10, ils facilitent son écoulement et autorisent sa circulation sous des débits élevés.It is also to solve the problems related to corrosion, and this in two ways. On the one hand, the
On notera enfin que le fait que les écarteurs 17a présentent des logements pour chaque spire du serpentin 10 permet de s'affranchir des écarts de diamètre d'enroulement de chaque spire, ces écarts étant compensés par les différences d'épaisseur que prennent, au moment du montage de l'échangeur, les écarteurs 17a entre leur face externe et leur logement.Finally, it should be noted that the fact that the spacers 17a have housings for each turn of the
L'eau à réchauffer s'écoule en montant dans le corps 1 (flèches A), d'une part, en hélice entre deux spires consécutives du serpentin 10 et, d'autre part, entre le serpentin 10 et le corps 1 ou la virole 8. Par contre, dans le serpentin 10, le fluide primaire s'écoule en descendant (flèches B), c'est-à-dire à contre-courant de l'eau du fluide secondaire.The water to be heated flows upwards into the body 1 (arrows A), on the one hand, in a helix between two consecutive turns of the
Le fluide primaire est, par exemple, un agent frigorifique issu d'une pompe à chaleur (non représentée) mais pourrait être aussi de la vapeur d'eau ou de l'eau chaude.The primary fluid is, for example, a refrigerant from a heat pump (not shown) but could also be steam or hot water.
Claims (4)
- Heat exchanger used for the heating fo a secondary fluid such as swimming-pool water or sea-water comprising a body provided with an inlet for the said secondary fluid to be heated and an outlet for the said heated fluid, a shell in the interior of the body, a coil in which primary fluid circulates and which is lodged inside the annular space comprised between the body and the sleeve and to the exterior of which the water to be heated passes, characterised in that the body (1) and the shell (8) are constituted by a material on the basis of plastic material, reinforced, or not, whilst the coil (10) is made of titanium.
- Exchanger according to claim 1, characterised in that the said material on the basis of plastic material is polyester, reinforced by glass fibres.
- Exchanger according to one of the preceding claims, characterised in that between the internal wall of the body (1) and the coil (10) as well as between the external wall of the shell (8) and the coil (10) are located spacers (17a and 17b).
- Exchanger according to claim 3, characterised in that the spacers (17a) which are located between the internal wall of the body (1) and the coil (10) are presented in the form of a vertical band of small width compared with the diameter of the body (1) and provided with seatings for each of the whorls of the coil (10) and in that the spacers (17b) which are located between the external wall of the shell (8) and the coil (10) are presented in the form of a vertical band likewise of small width compared with the diameter of the shell (8).
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR9200571 | 1992-01-16 | ||
| FR9200571A FR2686408B1 (en) | 1992-01-16 | 1992-01-16 | HEAT EXCHANGER USED FOR HEATING A SECONDARY FLUID SUCH AS POOL WATER OR SEA WATER. |
| CA002089584A CA2089584C (en) | 1992-01-16 | 1993-02-16 | Echangeur de chaleur |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0552122A1 EP0552122A1 (en) | 1993-07-21 |
| EP0552122B1 true EP0552122B1 (en) | 1994-12-28 |
Family
ID=25675902
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP93460002A Expired - Lifetime EP0552122B1 (en) | 1992-01-16 | 1993-01-13 | Heat-exchanger |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP0552122B1 (en) |
| CA (1) | CA2089584C (en) |
| DE (1) | DE69300038T2 (en) |
| ES (1) | ES2068043T3 (en) |
| FR (1) | FR2686408B1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105299870A (en) * | 2014-07-07 | 2016-02-03 | 福州斯狄渢电热水器有限公司 | Heating cup |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IT1305868B1 (en) * | 1998-12-15 | 2001-05-21 | Ocean Spa | CONDENSER FOR A REFRIGERATOR, A FREEZER, THEIR SIMILAR COMBINATIONS |
| DE602005006281T2 (en) * | 2004-07-22 | 2009-05-07 | P.S.A. | HEAT EXCHANGER WITH SPOUT SPOOL / N AND SPIRAL / N LAMELLE / N |
| FR2873432B1 (en) | 2004-07-22 | 2016-09-09 | Anjou Piscine Service | HEAT EXCHANGER WITH SERPENTIN (S) AND RING HELICOIDAL (S) |
| DE102008059543A1 (en) * | 2008-11-30 | 2010-06-02 | Solarhybrid Ag | heat exchangers |
| CN102589339A (en) * | 2012-03-21 | 2012-07-18 | 刘滕军 | Pure titanium heat exchanger with titanium pipes passing in and out vertically |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1939564A1 (en) * | 1968-08-06 | 1970-02-12 | Atomic Power Construction Ltd | Suspension system for multiple pipe arrangements, especially in heat exchangers of nuclear reactors |
| DE3038344C2 (en) * | 1980-10-10 | 1982-12-16 | Hans 3559 Battenberg Vießmann | Device for heating a liquid |
| DE3262508D1 (en) * | 1981-02-06 | 1985-04-18 | Vaillant Joh Gmbh & Co | Heat exchanger for liquids |
| DE3221361A1 (en) * | 1982-06-05 | 1983-12-08 | Hahndorff, Ralf, 6102 Pfungstadt | Tubular heat exchanger |
| EP0267349B1 (en) * | 1986-11-13 | 1990-04-04 | Hamon-Sobelco S.A. | Assembly by welding of tube plates in heat exchangers comprising solid titanium tube plates |
-
1992
- 1992-01-16 FR FR9200571A patent/FR2686408B1/en not_active Expired - Fee Related
-
1993
- 1993-01-13 EP EP93460002A patent/EP0552122B1/en not_active Expired - Lifetime
- 1993-01-13 DE DE69300038T patent/DE69300038T2/en not_active Expired - Fee Related
- 1993-01-13 ES ES93460002T patent/ES2068043T3/en not_active Expired - Lifetime
- 1993-02-16 CA CA002089584A patent/CA2089584C/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105299870A (en) * | 2014-07-07 | 2016-02-03 | 福州斯狄渢电热水器有限公司 | Heating cup |
| CN105299870B (en) * | 2014-07-07 | 2018-08-21 | 福州斯狄渢电热水器有限公司 | A kind of heating cup |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2686408A1 (en) | 1993-07-23 |
| CA2089584A1 (en) | 1994-08-17 |
| CA2089584C (en) | 2000-01-11 |
| ES2068043T3 (en) | 1995-04-01 |
| DE69300038D1 (en) | 1995-02-09 |
| EP0552122A1 (en) | 1993-07-21 |
| FR2686408B1 (en) | 1998-01-30 |
| DE69300038T2 (en) | 1995-05-04 |
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