FR2533021A1 - Plate heat exchanger. - Google Patents
Plate heat exchanger. Download PDFInfo
- Publication number
- FR2533021A1 FR2533021A1 FR8215563A FR8215563A FR2533021A1 FR 2533021 A1 FR2533021 A1 FR 2533021A1 FR 8215563 A FR8215563 A FR 8215563A FR 8215563 A FR8215563 A FR 8215563A FR 2533021 A1 FR2533021 A1 FR 2533021A1
- Authority
- FR
- France
- Prior art keywords
- plate
- plates
- fluids
- channels
- face
- 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
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Classifications
-
- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23L—FOODS, FOODSTUFFS, OR NON-ALCOHOLIC BEVERAGES, NOT COVERED BY SUBCLASSES A21D OR A23B-A23J; THEIR PREPARATION OR TREATMENT, e.g. COOKING, MODIFICATION OF NUTRITIVE QUALITIES, PHYSICAL TREATMENT; PRESERVATION OF FOODS OR FOODSTUFFS, IN GENERAL
- A23L3/00—Preservation of foods or foodstuffs, in general, e.g. pasteurising, sterilising, specially adapted for foods or foodstuffs
- A23L3/16—Preservation of foods or foodstuffs, in general, e.g. pasteurising, sterilising, specially adapted for foods or foodstuffs by heating loose unpacked materials
- A23L3/18—Preservation of foods or foodstuffs, in general, e.g. pasteurising, sterilising, specially adapted for foods or foodstuffs by heating loose unpacked materials while they are progressively transported through the apparatus
- A23L3/20—Preservation of foods or foodstuffs, in general, e.g. pasteurising, sterilising, specially adapted for foods or foodstuffs by heating loose unpacked materials while they are progressively transported through the apparatus with transport along plates
-
- 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
- F28F21/065—Constructions of heat-exchange apparatus characterised by the selection of particular materials of plastics material the heat-exchange apparatus employing plate-like or laminated conduits
-
- 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
- F28F3/08—Elements constructed for building-up into stacks, e.g. capable of being taken apart for cleaning
- F28F3/083—Elements constructed for building-up into stacks, e.g. capable of being taken apart for cleaning capable of being taken apart
Abstract
Description
Echangeur de chaleur à plaques
La présente invention concerne un échangeur de chaleur à plaques emboitées serrées les unes contre les autres et formant deux à deux des canaux parallèles de circulation des fluides.Plate heat exchanger
The present invention relates to a heat exchanger with nested plates clamped against each other and forming two by two parallel channels for the circulation of fluids.
On connait déjà des échangeurs de ce genre à plaques groups superposées en t81e métallique emboutie, avec circulation en contrecourant des fluides en échange de chaleur, qui sont utilisés notamment dans les industries alimentaires, où l'on tire parti de leur facilité de démontage pour le nettoyage.Lorsque lton veut cependant traiter des liquides corrosifs, il convient de recourir, soit à un métal résistant à la corrosion, tel que le titane, matériau tres coûteux, soit à une matière plastique à charge conductrice, dont le coefficient de conductibilité thermique est notablement plus faible que celui des métaux usuels. I1 devient alors nécessaire de disposer les trajets des fluides en échange de chaleur, non plus en parallèle mais en série, pour compenser la diminution du coefficient d'échange. On a déjà proposé à cet effet des plaques à canaux parallèles comportant à l'une de leurs extrémités un orifice d'introduction et à l'autre un orifice d'évacuation du fluide circulant.Du fait de la circulation en série, on ne peut toutefois avoir des plaques identiques, car les orifices d'admission et d'évacuation entre deux plaques doivent être alternativement décalés, ce qui peut entrainer des erreurs au montage, entrainant le bouchage de certains orifices d'admission entre plaques. Par ailleurs, du fait du décalage des orifices, alternativement à droite et à gauche du plan médian perpendiculaire aux plaques, la répartition du débit dans les canaux des plaques n'est pas régulière, ceux plus proches des orifices d'introduction et d'évacuation étant mieux irrigués. Le coefficient d'rechange moyen est diminué par rapport à celui de plaques dont le débit de fluide serait également réparti entre tous les canaux.En outre, la perte de charge à travers ltéchangeur est relativement élevée, du fait des faibles sections de passage au niveau des orifices d'admission et d'évacuation. Enfin, les canaux des plaques étant parallèles, il convient de les fabriquer et les monter avec des tolérances rigoureuses lorsqu'elles sont en matière plastique, sinon on risquerait de poinçonner le matériau de certaines plaques. There are already known exchangers of this type with superimposed group plates of stamped metal t81e, with circulation by countercurrent to fluids in exchange for heat, which are used in particular in the food industries, where advantage is taken of their ease of dismantling for the When it is however necessary to treat corrosive liquids, it is advisable to resort either to a metal resistant to corrosion, such as titanium, very expensive material, or to a plastic material with a conductive charge, whose coefficient of thermal conductivity is significantly lower than that of common metals. It then becomes necessary to arrange the paths of the fluids in heat exchange, no longer in parallel but in series, to compensate for the reduction in the exchange coefficient. For this purpose, plates with parallel channels have already been proposed, comprising at one of their ends an introduction orifice and at the other an orifice for evacuating the circulating fluid. Due to the series circulation, it is not possible to however, have identical plates, because the intake and exhaust ports between two plates must be alternately offset, which can cause assembly errors, causing blockage of certain intake ports between plates. Furthermore, due to the offset of the orifices, alternately to the right and to the left of the median plane perpendicular to the plates, the distribution of the flow in the channels of the plates is not regular, those closer to the introduction and evacuation orifices being better irrigated. The average exchange coefficient is reduced compared to that of plates whose fluid flow would be equally distributed between all the channels. In addition, the pressure drop across the exchanger is relatively high, due to the small cross sections at the level intake and exhaust ports. Finally, the channels of the plates being parallel, they should be manufactured and mounted with strict tolerances when they are made of plastic, otherwise there is a risk of punching the material of certain plates.
La présente invention a pour but de remédier à ces inconvénients, et de procurer un changeur de chaleur dont toutes les plaques soient identiques, et où la répartition du debit des fluides se fasse galement entre les canaux parallèles. Elle a encore pour but de procurer un échangeur de chaleur dont le montage soit aisé et qui assure une perte de charge faible et un coefficient d'échange satisfaisant, même avec un matériau de plaques de coefficient de conduct-bilité thermique relativement faible, tel qu'une matière plastique chargée d'une poudre de matériau conducteur. The object of the present invention is to remedy these drawbacks, and to provide a heat changer in which all the plates are identical, and in which the distribution of the flow rate of the fluids is also made between the parallel channels. It also aims to provide a heat exchanger whose assembly is easy and which ensures a low pressure drop and a satisfactory exchange coefficient, even with a material of plates of relatively low thermal conductivity coefficient, such as 'a plastic loaded with a conductive material powder.
L'échangeur de chaleur selon l'invention est caractérisé en ce que ses plaques sont carres et identiques les unes aux autres, la direction des canaux sur l'une de leurs faces étant à 900 de cette direction sur l'autre face, et en ce que chaque plaque est décalée angulairement à 900 par rapport à la suivante, de façon à assurer une circulation croisée des fluides en échange de chaleur. The heat exchanger according to the invention is characterized in that its plates are square and identical to each other, the direction of the channels on one of their faces being 900 from this direction on the other face, and in that each plate is offset angularly to 900 relative to the next, so as to ensure a cross circulation of the fluids in exchange for heat.
Il répond en outre de préférence à au moins l'une des caractérisé tiques suivantes - Les plaques sont en matériau plastique à charge bonne conductrice de la chaleur. It also preferably meets at least one of the following characteristics - The plates are made of plastic material with a good heat conductive charge.
- Chaque plaque est munie sur ses bords de l'une de ses faces d'un bourrelet, la face opposée de son pourtour étant lisse, ltétanchéité de l'échangeur étant assurée par pression du bourrelet d'une plaque contre la face lisse de la plaque adjacente.- Each plate is provided on its edges with one of its faces with a bead, the opposite face of its periphery being smooth, the sealing of the exchanger being ensured by pressing the bead of a plate against the smooth face of the adjacent plate.
- Les orifices d'admission de l'un des fluides sur une face d'une plaque et d'évacuation de ce fluide de la face opposée de celle-ci occupent sensiblement toute la longueur d'un côté de la plaque.- The inlet orifices for one of the fluids on one face of a plate and for discharging this fluid from the opposite face thereof occupy substantially the entire length of one side of the plate.
I1 est décrit ci-après, à titre d'exemple et en référence aux figures du dessin annexé, un échangeur de chaleur en matière plastique chargé de noir de carbone selon l'invention. I1 is described below, by way of example and with reference to the figures of the accompanying drawing, a plastic heat exchanger loaded with carbon black according to the invention.
La figure 1 représente en plan une face d'une plaque. Figure 1 shows in plan a face of a plate.
La figure 2 représente une coupe partielle selon l'axe II-II de la figure 1. FIG. 2 represents a partial section along the axis II-II of FIG. 1.
La figure 3 représente en vue agrandie (détail III de la figure 1) un coin d'une plaque. Figure 3 shows in enlarged view (detail III of Figure 1) a corner of a plate.
La figure 4 représente en coupe par un plan vertical un empilage de quatre plaques. Figure 4 shows in section through a vertical plane a stack of four plates.
La figure 5 représente en perspective en vue éclatée quatre plaques d'un échangeur et la circulation des fluides dans celles-ci. Figure 5 shows in perspective an exploded view four plates of an exchanger and the circulation of fluids therein.
Dans les figures 1 à 3, la plaque carrée comporte des canaux parallèles 1 alimentés par le haut par les orifices individuels 2. Les canaux sont séparés par des cloisons de section droite trapézoPdale 3. Elle est munie sur son rebord gauche d'orifices de passage 4, en nombre égal à celui des orifices 2, permettant le passage.d'un fluide provenant de l'arrière de la plaque et destiné à circuler au contact des deux autres plaques suivantes, comme on le verra en référence à la figure 5. Son rebord droit 5 est par contre fermé. Un bourrelet 6 sur le pourtour des canaux et des orifices de passage assure l'étanchéité par écrasement contre la face plane en regard de la plaque suivante.Des bossages 7 sur les extrémités des cloisons contribuent à assurer la régularité de ltécartement des plaques. In FIGS. 1 to 3, the square plate has parallel channels 1 supplied from above by the individual orifices 2. The channels are separated by partitions of trapezoidal cross section 3. It is provided on its left edge with passage orifices 4, in a number equal to that of the orifices 2, allowing the passage of a fluid coming from the rear of the plate and intended to circulate in contact with the other two following plates, as will be seen with reference to FIG. 5. Its straight edge 5 is however closed. A bead 6 on the periphery of the channels and passage orifices seals by crushing against the flat face opposite the next plate. Bosses 7 on the ends of the partitions contribute to ensuring the regularity of the spacing of the plates.
Les figures 4 et 5 représentent la circulation des fluides entre des plaques adjacentes. Le premier fluide pénétrant par les orifices du haut de la plaque 11, circule dans ses canaux 15 du haut vers le bas, puis traverse la plaque 12 par les orifices 4 et ressort du bas vers le haut dans les canaux 17 de la plaque 13 (flèche 19 -de la figure 5). Le second fluide circule perpendiculairement au plan de la figure de l'avant vers l'arrière de celle-ci, dans les canaux 16 de la plaque 12, traverse la plaque 13 par des orifices, non représentés en figure 3, puis revient dans les canaux 18 de la plaque 14 en circulant de l'arrière vers l'avant de la figure (flèche 20 de la figure 5). Figures 4 and 5 show the circulation of fluids between adjacent plates. The first fluid penetrating through the orifices at the top of the plate 11, circulates in its channels 15 from the top to the bottom, then passes through the plate 12 through the orifices 4 and exits from the bottom upwards into the channels 17 of the plate 13 ( arrow 19 -from Figure 5). The second fluid circulates perpendicular to the plane of the figure from the front to the rear thereof, in the channels 16 of the plate 12, passes through the plate 13 through orifices, not shown in FIG. 3, then returns to the channels 18 of the plate 14 by circulating from the rear towards the front of the figure (arrow 20 of figure 5).
Le matériau des plaques est avantageusement constitué d'une matrice polymère de polyéthylène à haute densité réticulé et de copolymère éthylène-propylène, chargée d'au moins 50% de noir de carbone, qui a fait l'objet des demandes de brevet français nO 2 459 815 du 26 juin 1979 et nO 81 10615 du 27 mai 1981 de la Demanderesse. The material of the plates advantageously consists of a polymer matrix of crosslinked high density polyethylene and ethylene-propylene copolymer, loaded with at least 50% carbon black, which has been the subject of French patent applications No 2 459,815 of June 26, 1979 and No. 81 10615 of May 27, 1981 of the Applicant.
L'échangeur de chaleur de l'invention convient en particulier pour le traitement d'eaux corrosives, notamment d'eaux d'origine géothermique, en vue de chauffage d'immeubles ou de la production d'eau chaude -sanitaire. The heat exchanger of the invention is particularly suitable for the treatment of corrosive water, in particular water of geothermal origin, for heating buildings or for the production of hot sanitary water.
Claims (4)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR8215563A FR2533021B1 (en) | 1982-09-15 | 1982-09-15 | PLATE HEAT EXCHANGER |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR8215563A FR2533021B1 (en) | 1982-09-15 | 1982-09-15 | PLATE HEAT EXCHANGER |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2533021A1 true FR2533021A1 (en) | 1984-03-16 |
FR2533021B1 FR2533021B1 (en) | 1987-05-22 |
Family
ID=9277465
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR8215563A Expired FR2533021B1 (en) | 1982-09-15 | 1982-09-15 | PLATE HEAT EXCHANGER |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR2533021B1 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5000253A (en) * | 1988-03-31 | 1991-03-19 | Roy Komarnicki | Ventilating heat recovery system |
EP0805328A2 (en) * | 1996-05-02 | 1997-11-05 | DORNIER GmbH | Flow module |
CN108253835A (en) * | 2016-12-28 | 2018-07-06 | 杭州三花家电热管理系统有限公司 | Plate-type heat-exchange core and with its plate heat exchanger |
Citations (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BE441768A (en) * | ||||
FR437925A (en) * | 1910-12-28 | 1912-05-03 | Unit Engineering Company Ltd | Apparatus for heating and cooling liquids, and for other similar uses |
FR782435A (en) * | 1934-09-12 | 1935-06-04 | Stone J & Co Ltd | Improvements to heat exchange devices for fluids, consisting of an assembly of plates |
US2203123A (en) * | 1938-08-16 | 1940-06-04 | Astle William | Gasketed plate |
FR920173A (en) * | 1944-12-18 | 1947-03-31 | R A Lister And Company Ltd | Improvements to heat exchangers |
FR961861A (en) * | 1950-05-24 | |||
FR992834A (en) * | 1949-06-01 | 1951-10-23 | Improvements to temperature exchangers assembled in prefabricated elements | |
GB710932A (en) * | 1950-08-19 | 1954-06-23 | Creamery Package Mfg Company L | Improvements in plate type heat exchangers |
FR2103583A1 (en) * | 1970-08-28 | 1972-04-14 | Ici Ltd | |
FR2314461A1 (en) * | 1976-05-07 | 1977-01-07 | Dieu Andre | Composite-type heat exchanger - comprises identical plates with chambes formed between adjacent ones constituting two circuits |
FR2469430A1 (en) * | 1979-11-16 | 1981-05-22 | Comp Generale Electricite | Fire-resistant heat conducting compsn. - contg. polyethylene, chlorinated polyethylene and conductive filler, giving good mechanical properties |
-
1982
- 1982-09-15 FR FR8215563A patent/FR2533021B1/en not_active Expired
Patent Citations (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BE441768A (en) * | ||||
FR961861A (en) * | 1950-05-24 | |||
FR437925A (en) * | 1910-12-28 | 1912-05-03 | Unit Engineering Company Ltd | Apparatus for heating and cooling liquids, and for other similar uses |
FR782435A (en) * | 1934-09-12 | 1935-06-04 | Stone J & Co Ltd | Improvements to heat exchange devices for fluids, consisting of an assembly of plates |
US2203123A (en) * | 1938-08-16 | 1940-06-04 | Astle William | Gasketed plate |
FR920173A (en) * | 1944-12-18 | 1947-03-31 | R A Lister And Company Ltd | Improvements to heat exchangers |
FR992834A (en) * | 1949-06-01 | 1951-10-23 | Improvements to temperature exchangers assembled in prefabricated elements | |
GB710932A (en) * | 1950-08-19 | 1954-06-23 | Creamery Package Mfg Company L | Improvements in plate type heat exchangers |
FR2103583A1 (en) * | 1970-08-28 | 1972-04-14 | Ici Ltd | |
FR2314461A1 (en) * | 1976-05-07 | 1977-01-07 | Dieu Andre | Composite-type heat exchanger - comprises identical plates with chambes formed between adjacent ones constituting two circuits |
FR2469430A1 (en) * | 1979-11-16 | 1981-05-22 | Comp Generale Electricite | Fire-resistant heat conducting compsn. - contg. polyethylene, chlorinated polyethylene and conductive filler, giving good mechanical properties |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5000253A (en) * | 1988-03-31 | 1991-03-19 | Roy Komarnicki | Ventilating heat recovery system |
EP0805328A2 (en) * | 1996-05-02 | 1997-11-05 | DORNIER GmbH | Flow module |
EP0805328A3 (en) * | 1996-05-02 | 1999-03-10 | Ballard Power Systems Inc. | Flow module |
CN108253835A (en) * | 2016-12-28 | 2018-07-06 | 杭州三花家电热管理系统有限公司 | Plate-type heat-exchange core and with its plate heat exchanger |
Also Published As
Publication number | Publication date |
---|---|
FR2533021B1 (en) | 1987-05-22 |
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