EP0495973A1 - Method and device for splitting a stream of fluid. - Google Patents
Method and device for splitting a stream of fluid.Info
- Publication number
- EP0495973A1 EP0495973A1 EP91915776A EP91915776A EP0495973A1 EP 0495973 A1 EP0495973 A1 EP 0495973A1 EP 91915776 A EP91915776 A EP 91915776A EP 91915776 A EP91915776 A EP 91915776A EP 0495973 A1 EP0495973 A1 EP 0495973A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- strip
- corrugated
- corrugated sheet
- successive
- turns
- 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
Links
Classifications
-
- 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
- F28D9/04—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 being formed by spirally-wound plates or laminae
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D53/00—Making other particular articles
- B21D53/02—Making other particular articles heat exchangers or parts thereof, e.g. radiators, condensers fins, headers
- B21D53/027—Making other particular articles heat exchangers or parts thereof, e.g. radiators, condensers fins, headers by helically or spirally winding elongated elements
-
- 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
- F28F3/025—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being corrugated, plate-like elements
Definitions
- the present invention relates to a method and a device intended to ensure the partitioning of a pipe defining a fluid flow stream, into a plurality of elementary streams of identical shape and size and making it possible to promote chemical or physical exchanges between fluids or their various solid or gaseous liquid phases.
- a plurality of parallel channels is thus obtained, the shape and dimensions of the section of which depend on those of the corrugations of the corrugated sheet, this section usually being of substantially trapezoidal shape, three of the sides of said trapezium being formed by the sides of a corrugation of the corrugated sheet and the fourth side by successively one side and the other of the strip.
- the corrugated sheet must have a flexible structure so as to be able to adapt to the variation in radius of curvature to which it is subjected as and when the winding is carried out.
- this same corrugated sheet must be applied to the strip and we are therefore led, during the winding operation, to exert, both on the strip and on the corrugated sheet, a certain tension force tending to tighten the turns. of the two windings.
- these tubes o:; an "circular" section which implies that such a device for partitioning a fluid stream has a significant loss of cross section, corresponding to the surface existing between the tubes.
- the object of the present invention is therefore a method making it possible to obtain, from the previously mentioned winding technique, a bundle of parallel channels of identical sections allowing ensure the partitioning of large-diameter fluid veins, which is both easy to manufacture and which presents only a minimum loss of passage cross-section.
- the flat sheets available on the market, and used for the manufacture of the corrugated sheet are, for manufacturing reasons, of small width, which leads to limit the length of each of the channels constituting a elementary fluid vein.
- the present invention also aims to overcome this drawback by providing a means for producing partitioning devices for fluid veins of practically any length.
- the present invention provides a means for avoiding the superposition of defects and therefore their amplification, thus contributing to a better homogeneity of the flow channels formed.
- the subject of the present invention is therefore a method of manufacturing a plurality of parallel adjacent channels intended to ensure the partitioning of a flowing vein into a plurality of identical elementary veins, the channels being obtained by simultaneous winding, on the same core, of at least two sheets , namely a first flat sheet, or strip, and a second corrugated sheet, the corrugated sheet taking place between two successive turns of the strip so that the tops of two of its successive corrugations come into contact with each of these turns, respectively.
- This method is characterized in that one ensures a stiffening of the corrugated sheet, as and when it is placed between the turns of the strip, by fixing it on said strip, so as to maintain substantially constant the radial spacing separating two successive turns of the strip.
- the present invention therefore employs two stiffening means, namely a first known means, constituted by the strip and a second means constituted by the corrugated sheet which, as soon as it is fixed to the first means, then behaves as a system of members.
- a first known means constituted by the strip
- a second means constituted by the corrugated sheet which, as soon as it is fixed to the first means, then behaves as a system of members.
- the present invention also makes it possible to improve the stiffening provided by the first means since it is possible, without causing the corrugated sheet to be crushed, to increase the traction exerted on the strip during winding, which makes it possible to improve the rigidity imparted to the device by the first means of stiffening.
- the corrugated sheet consists of a series of corrugated elements placed end to end, the junction between two successive elements, namely a first element or upstream element (that is to say a element already in place between two turns of the strip) and a second element or downstream element (that is to say an element to be put in place), by fixing these two elements to the strip, and the front part of the downstream element abutting with the rear part of the upstream element so as to ensure the continuity of the undulation between the upstream element and the downstream element.
- a first element or upstream element that is to say a element already in place between two turns of the strip
- a second element or downstream element that is to say an element to be put in place
- the front part of a corrugated element ends in a corrugation vertex intended to come into abutment against a flank of a corrugation situated furthest back from a disposed element upstream, superimposed on the rear part of it.
- the length of the rear part of an element situated beyond said flank forming a stop is not critical, and this avoids setting work of an additional length dimension.
- each corrugated element can end in a flat part, extending the flank of the corrugation the most. backward.
- the corrugated sheet consists of a series separate elements placed end to end, each element being reversed laterally with respect to the previous one, so that a given side of an element is opposite this side on the next element.
- the inherent rigidity of the corrugated element is improved, which is particularly advantageous in the case of corrugated elements of large width and small thickness, by making end of the latter intended to come into contact with the side of the corrugation of another element, a stiffening rib ccnstitué by a fold substantially parallel to the side of the corrugation with which it is intended to come into contact.
- each channel nevertheless communicates with them, so as to ensure a balancing of the flow parameters of the different channels.
- Figure 1 is a partial perspective view of a device for implementing the method according to the invention, shown during production of the winding.
- Figure 2 is a partial cross section in section, of a device according to the invention, shown at the start of winding embodiment.
- Figure 3 is a partial cross section in section of a device according to the invention shown during production of the winding.
- Figure 4 is a partial sectional view of several corrugated elements, presented before their installation and substantially in the position they will occupy in the device.
- Figures 5 and 6 are partial cross-sectional views of alternative embodiments of the invention.
- Figure 7 is a partial perspective view of a corrugated element.
- FIG. 8 is a partial view in cross section of the alternative embodiment of FIG. 7.
- Figure 9 is a perspective view of an embodiment of the invention.
- a core 1 consisting of a cylindrical tube is secured, at each of its ends of a hub 3 rotatably mounted on a bearing 5 held by a support 7 (shown partially).
- the core 1 is able to rotate around the horizontal axis xx 'joining the two bearings 5.
- the fixing can be carried out by spot welding which has the advantage of being unable to create additional volume inside the channels 15, a volume which would be a source of flow disturbances.
- the stiffening of the corrugated sheet 12 can, for certain corrugations, be obtained by securing, a corrugation top 13 in contact with one face of the strip 11, the latter, and a wavy top 13 substantially symmetrical to the previous one with respect to the strip 11.
- the corrugated sheet 12, as shown in FIG. 4, can also consist of a series of corrugated elements 12 ′ which are placed end to end. Each of these corrugated elements 12 ′ is fixed by its corrugation vertices 13 to the strip 11.
- the corrugated elements 12 ′ can terminate, at each of their ends by a semi-corrugation vertex (Fig. 5) open towards said regions ends, so that bringing the rear face of an element into abutment with the front face of another element ensures continuity of the undulation between the two corrugated t.jments 12 ′.
- the respective end portions 22 and 23 of the corrugated elements are fixed by welding points 14a and 14b respectively on the strip 11.
- the positioning of the wavy elements 12 ′ can also be carried out by placing the part 23 of greater length (which then becomes the front part of a corrugated downstream element) under the part 22 of shorter length (which then becomes the rear part of a corrugated element upstream).
- the front part 22 of the corrugated element 12 ' is folded, substantially in the same direction as that of the rear flank 19 of the corrugated element upstream with which it is intended to come into contact, so as to form a rib 20.
- This rib 20 plays a rc ' .e of stiffening which is particularly advantageous in the case where corrugated elements 12' of small are used thick and wide.
- the joining of the corrugated elements 12 ′ with the strip 11 could be obtained by other means, namely riveting, bonding, etc.
- By producing the corrugated sheet 12 in a modular fashion it is possible, by reversing the corrugated elements 12 laterally. '' successive, avoid the accumulation of errors and tolerances manifested on each of the undulations, and which, by the play of the superimpositions of the different turns, are likely to cause a taper of the device which can lead to its disposal .
- Such communication between adjacent channels can also be used to ensure mixing of fluids, and for example favor the so-called “online mixing” operations.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Physical Or Chemical Processes And Apparatus (AREA)
- Laminated Bodies (AREA)
- Exhaust Gas After Treatment (AREA)
Abstract
La présente invention concerne un procédé de fabrication d'une pluralité de canaux adjacents (15) parallèles destinés à assurer la partition d'une veine fluide en écoulement en une pluralité de veines élémentaires identiques, les canaux (15) étant obtenus par enroulement simultané, sur un même noyau (1), d'au moins deux feuilles, à savoir une première feuille plane, ou feuillard (11), et une seconde feuille ondulée (12), la feuille ondulée prenant place entre deux spires successives du feuillard (11) de façon que les sommets (14) de deux de ses ondulations successives viennent respectivement en contact avec chacune de ces spires. Ce procédé est caractérisé en ce que l'on assure une rigidification de la feuille ondulée (12), au fur et à mesure de sa mise en place entre les spires de feuillard (11), par fixation de celle-ci sur ledit feuillard (11), de façon à maintenir sensiblement constant l'ecartement radial séparant deux spires successives du feuillard (11).The present invention relates to a method of manufacturing a plurality of parallel adjacent channels (15) intended to ensure the partitioning of a flowing fluid vein into a plurality of identical elementary veins, the channels (15) being obtained by simultaneous winding, on the same core (1), at least two sheets, namely a first flat sheet, or strip (11), and a second corrugated sheet (12), the corrugated sheet taking place between two successive turns of the strip (11 ) so that the tops (14) of two of its successive undulations respectively come into contact with each of these turns. This method is characterized in that the corrugated sheet (12) is stiffened as it is put in place between the coils of strip (11), by fixing it to the said strip ( 11), so as to maintain substantially constant the radial spacing separating two successive turns of the strip (11).
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9010266A FR2665651B1 (en) | 1990-08-10 | 1990-08-10 | METHOD AND DEVICE FOR PROVIDING THE PARTITION OF A FLUID VEIN. |
FR9010266 | 1990-08-10 | ||
PCT/FR1991/000654 WO1992002317A1 (en) | 1990-08-10 | 1991-08-07 | Method and device for splitting a stream of fluid |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0495973A1 true EP0495973A1 (en) | 1992-07-29 |
EP0495973B1 EP0495973B1 (en) | 1994-10-26 |
Family
ID=9399622
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP91915776A Expired - Lifetime EP0495973B1 (en) | 1990-08-10 | 1991-08-07 | Method and device for splitting a stream of fluid |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0495973B1 (en) |
DE (1) | DE69104820D1 (en) |
FR (1) | FR2665651B1 (en) |
WO (1) | WO1992002317A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2552523A (en) * | 2016-07-28 | 2018-01-31 | Bkbd Ltd | Condensing boiler |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE69610589T2 (en) * | 1995-07-12 | 2001-02-08 | Rolls Royce Plc | Heat exchanger |
US20120132407A1 (en) * | 2011-01-12 | 2012-05-31 | Saade Makhlouf | Heat exchanger manifold and method of manufacture |
DE102012203714A1 (en) * | 2012-03-08 | 2013-09-12 | Siemens Aktiengesellschaft | Barrier system for a high-voltage device and high-voltage device with a barrier system |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2731713A (en) * | 1951-11-23 | 1956-01-24 | Gen Electric | Method of making a focused multicell |
US2757628A (en) * | 1952-09-17 | 1956-08-07 | Gen Motors Corp | Method of making a multiple passage heat exchanger tube |
US3909901A (en) * | 1973-03-29 | 1975-10-07 | Stalker Corp | Method of fabricating a heat exchanger core |
FR2625298B1 (en) * | 1987-12-28 | 1991-10-18 | Spirec | DEVICE FOR HEATING OR COOLING A GASEOUS FLUID USED IN PARTICULAR AS A TERMINAL BATTERY OF AN AIR CONDITIONING INSTALLATION |
-
1990
- 1990-08-10 FR FR9010266A patent/FR2665651B1/en not_active Expired - Fee Related
-
1991
- 1991-08-07 DE DE69104820T patent/DE69104820D1/en not_active Expired - Lifetime
- 1991-08-07 EP EP91915776A patent/EP0495973B1/en not_active Expired - Lifetime
- 1991-08-07 WO PCT/FR1991/000654 patent/WO1992002317A1/en active IP Right Grant
Non-Patent Citations (1)
Title |
---|
See references of WO9202317A1 * |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2552523A (en) * | 2016-07-28 | 2018-01-31 | Bkbd Ltd | Condensing boiler |
US10760820B2 (en) | 2016-07-28 | 2020-09-01 | Bkbd Limited | Condensing boiler |
GB2552523B (en) * | 2016-07-28 | 2020-12-30 | Bkbd Ltd | Condensing boiler |
Also Published As
Publication number | Publication date |
---|---|
EP0495973B1 (en) | 1994-10-26 |
WO1992002317A1 (en) | 1992-02-20 |
FR2665651B1 (en) | 1993-07-02 |
FR2665651A1 (en) | 1992-02-14 |
DE69104820D1 (en) | 1994-12-01 |
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