EP0097662A1 - Bladed heat exchanger, particularly for a convector. - Google Patents
Bladed heat exchanger, particularly for a convector.Info
- Publication number
- EP0097662A1 EP0097662A1 EP83900045A EP83900045A EP0097662A1 EP 0097662 A1 EP0097662 A1 EP 0097662A1 EP 83900045 A EP83900045 A EP 83900045A EP 83900045 A EP83900045 A EP 83900045A EP 0097662 A1 EP0097662 A1 EP 0097662A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- fins
- distributor
- heat exchanger
- exchanger
- exchangers
- 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
- F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
- F28D1/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
- F28D1/04—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits
- F28D1/047—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being bent, e.g. in a serpentine or zig-zag
- F28D1/0475—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being bent, e.g. in a serpentine or zig-zag the conduits having a single U-bend
-
- 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
- F24H3/00—Air heaters
- F24H3/002—Air heaters using electric energy supply
-
- 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
- F28F1/26—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 being integral with the element
Definitions
- the present invention relates to a finned heat exchanger, in particular for a convector, exchanger comprising a collector-distributor of calories having substantially the shape of a tube inside which is arranged a circulating or refrigerating means, said collector-dis tributor comprising at least two rectilinear branches parallel to each other, fins being arranged transversely with respect to the two branches of said manifold-distributor.
- the invention also relates to the positioning of these exchangers inside the heating convectors.
- Finned heat exchangers have been known for a long time. They find their application in all areas where a heat exchange is sought, for example but not limited to domestic heating convectors.
- the transverse fins are 'supported at at least one point by the circulating means which they surround.
- the fins determine between them zones of exchange with a gas flow while heating.
- the devices proposed so far present have many disadvantages.
- the fins project laterally with respect to the tube containing the circulating means which is arranged in a position such that the tube is horizontal. This results in the formation of an undesirable temperature gradient at the outlet of the convector.
- the known exchangers are all of complex design, further allowing their positioning only in convectors of relatively large dimensions, particularly in width.
- the object of the present invention is to overcome these drawbacks by proposing a heat exchanger of the type described above, allowing:
- a fin heat exchanger in particular for a convector, exchanger comprising a collector-distributor of calories or frigories having substantially the shape of a tube, inside which is arranged a circulating or refrigerating means, said manifold-distributor comprising at least two rectilinear branches parallel to each other, fins being arranged transversely to the branches of said tube, characterized in that the transverse fins are of polygonal shape, the branches of the manifold-distributor being arranged at two opposite vertices of each of the fins, said fins not projecting laterally from the branches of the manifold-distributor towards the outside of the exchanger and connecting to these in an inclined plane , and that the gas flow crosses the structure of the exchanger at intervals between the branches of the manifold-distributor and between the fins.
- the fins do not project laterally from the branches of the manifold-distributor, which allows optimal positioning of the exchanger in a convector. This will be explained later.
- the fins since the fins have a generally polygonal shape, they are connected to the branches of the manifold-distributor according to an inclined plane, which in fact produces a truncated section of the exchanger on each of its edges.
- the exchanger can be arranged inclined in the convector, for example by an angle of 30 ° to 60 °.
- the exchanger will be produced in two 1/2 molded shells, the fins and the branches of the manifold-distributor in the form of 1/2 semicylindrical tube having come from molding. In this case the fins will preferentially affect a trapezoidal structure.
- the exchange zones of each of the 1/2 shells will correspond only to a portion of semi-cylinder, so that during assembly the circulating means can be clamped optimally for the exchange thermal with the collector-distributor thus formed by the union of the two portions in the form of 1/2 cylindrical hemi tube.
- the two shells forming the exchanger may be identical, which will require the use of one and the same mold for their production.
- the fins of the two shells are perfectly aligned.
- the fins of each half-shell will generally have an identical frustoconical profile.
- the meeting of the two sets of facing vanes. screw of one another forms a succession of Venturi crossed by the gas flow.
- provision may be made to offset the fins of a 1/2 shell relative to those of the other 1/2 shell. In this way, the number of leading edges is increased, which obviously increases the efficiency of the exchange. We can evaluate this gain at around 20% in power.
- the offset fins will have a taper in the form of an aircraft wing leading edge.
- the exchanger according to the invention can be designed in a modular way, by proposing extensions (extensions) which can be added at the end so as to obtain exchangers of variable length.
- collector-distributor may assign a U-shaped profile.
- the inlet and outlet of the origins means are on the same side on the exchanger element concerned.
- an additional fin will be provided, connected by metal bridges of very thick thickness delimiting openwork between them.
- this level it will also be possible, to ensure better contact between the exchange zone and the circulating medium, to provide a contact substance between the two elements.
- this substance can be provided over the entire length of the exchange zone of the collector-distributor.
- the exchange zone can be painted internally in black or another color which absorbs the radiation of the circulating medium well.
- - Figure 1 is a perspective view of the two constituent parts of a fin exchanger according to the invention
- - Figure 2 illustrates an electrical resistance around which the exchanger can be arranged
- FIG. 3 illustrates a copper pin for circulation of a fluid around which the exchanger can be arranged
- - Figure 4 shows an elevational view of a normal half exchanger
- FIG. 4A is a section along B-B of Figure 4.
- FIG. 6 is an elevational view of a half exchanger with offset fins;
- - Figure 6A is a section along A-A of Figure 6;
- FIG. 6B is a section along B-B of Figure 6;
- FIG. 6C is a section along C-C of Figure 6;
- FIG. 7 shows an exchanger according to the invention provided with an extension.
- FIG. 10 to 17A and I 7B illustrate in section the possible positioning of one or more exchangers according to the invention in an electric convector or hot water circulation for example;
- FIG. 18A and 18B illustrate an assembly two half-shells per clip;
- FIGS. 19A and 19B illustrate a clip for assembling a heat exchanger and an extension
- FIG. 21A shows a plan view of a half-shell which can be assembled by clip
- Figure 21B is a section on-D-D of Figure 21A. We will first refer to Figure 1.
- the exchanger according to the invention consists of two shells (1) and (2). These two shells are assembled together by any suitable means, screwing, bonding, riveting bolt, collars, clips, cold bonding, rivets from fo ⁇ aderie.
- Each hull essentially has two elements, namely:
- the fins are of polygonal section and do not project laterally from the branches of the manifold-distributor which constitutes the exchange zone.
- the fins retain exactly the same positioning as at the branches and remain parallel to each other.
- the fins determine between them over the entire width of the exchanger intervals (6) through which air circulates in contact with the sample surfaces.
- the fins have in their junction zone with the half-tubes (3) truncated edges (7,8).
- FIG. 2 shows an electrical resistance (9) which can be used as circulating means.
- FIG. 3 shows a pin (10) made of copper tube, for example, which can be placed in the half-tubes (3), a pin inside which a circulation of circulating fluid is established. (or refrigerant), for example hot water.
- the exchanger as described in Figure 1 will be very advantageously made of aluminum, the fins and the half-tubes to which they are connected having come from molding.
- the two shells (1) and (2) are identical and can therefore be obtained from a single mold.
- assembly holes (46) are arranged between two fins in a thickness of metal which is integral with the two fins and the part inside of the manifold-distributor.
- FIG. 5 shows a number of possible variants in terms of the structure and the relative position of the fins.
- the half-fins of each shell will be arranged symmetrically and opposite one another, which is illustrated by the assembly (19).
- the half-fins will be staggered, with a lateral offset according to a given pitch, for example a half-pitch. This is clearly illustrated in Figure 5.
- the fins may have any possible section.
- Conventional fins (20) may also be in the form of shortened fins (21). Else. apart we can also use tapered fins, such as those referenced (22).
- the shortened fins (21), shown in FIG. 5A, allow better passage of the air flow through the exchanger, in particular by their oblong recess.
- the advantages of this structure of the exchangers in the form of the invention will appear clearly in the examples below illustrating their use, preferential but not limiting, in heat convectors for domestic use. In FIGS. 8 and 9, the possible positioning is shown. one or more exchangers in the case of an electric convector.
- the tubes (3) must be placed at a minimum distance from the walls (23, 24) of the convectors, and at a minimum distance also from each other, which is shown in FIG. 9 , at the central part (25).
- FIG. 8 shows the advantage of the structure according to the invention, in which the fins are truncated and do not project beyond the exchange zone. It is thus possible to position the exchanger with a certain inclination and at the same time an appreciable gain in space is achieved in width while increasing the performance in terms of efficiency and temperature distribution.
- the fins will be arranged in such a way that the sides of the trapezium (50) are well parallel to the walls of the covering (23 and 24), so that the fins do not project beyond the exchange zone delimited by the manifold-distributor.
- the points (51) Fig.ll of the fins are inside the exchange zone, but in principle never outside.
- Figure 8 can be used for a hot water convector, with the only difference that in this case it is not necessary to leave a gap between the circulation tubes (3) and the walls (23) and (24).
- FIG. 9 represents two electrical exchangers in accordance with the invention arranged in alignment.
- the zone (25) will be as narrow as possible compatible with proper operation, so as to limit the circulation of air between the two tubes (26,27), the latter having to preferably take place between the two branches of a same exchanger.
- FIGS. 10 to 16 arrangements of exchangers for hot water convector have been shown.
- FIGS. 17A and 17B show two exchangers for an electric convector, arranged one above the other. This illustrates the offset that must be observed to always allow fresh air to pass along arrow F. FIG. 17B illustrates the extreme case.
- an extension (39) can be added forming an extension and essentially comprising two rectilinear half-tubes (40), open at each of their lateral ends, and transverse fins (41) of the same structure and obeying the same construction rules as the fins described in the preceding paragraphs.
- the electrical resistances to be incorporated into them or the hairpin tubes will be modified accordingly.
- These extensions are made up of two identical 1/2 shells. It is thus possible in a modular fashion to produce exchangers to the exact desired dimension from an end element integrating the curved part of the U of the manifold-distributor and of extensions making it possible to extend the branches of the U-shaped manifold.
- male ends (47) of the element of FIG. 7 are embedded in trunks of receptor cones (48) shown in FIGS. 4 and 6.
- the 4 half-holes (49) of FIG. 7 will enclose during assembly two cylindrical rods equipped at each end between the first and the second fin on either side of the assembly points, for example stop washers which will serve to maintain this assembly in the longitudinal direction for good tighten if necessary.
- the female ends of the extensions are also provided with trunks of cones (48) in order to receive extensions in the same way and thus form exchangers of variable length.
- the recovery of calories on the one hand and the entire exchange zone and their evacuation on the other hand more particularly in the rounded part of the U-shaped tube are optimal.
- the two elements whose junction constitutes the exchange zone correspond only to a portion of semi-cylinder (X-X gap).
- each heat exchanger or extension shell has holes (52) shown in Figures 1 and 7 useful for hanging or fixing the heat exchanger in the desired position.
- FIG. 18A two half-shells (101), (102) are shown connected together by a spring clip (103), the final position being represented in FIG. 18B.
- this will have grooves (107) shown in FIG. 21B, in which the free ends of the clip will be housed.
- the fins may have a non-isosceles trapezoidal section (112) depending on the inclination of the exchanger.
- the use of a spring clip also allows easy assembly, therefore an advantageous gain in terms of manufacturing, as well as easy maintenance, disassembly being very simple.
- the clip will be made of special stainless steel, for example structural hardening steel, due to the high temperatures used (of the order of 350 ° C.).
- junction clips (108) are also produced between an exchanger and an extension.
- the clip comprises an elastic branch (109) and two lateral tabs (110, 111) shown in side view in FIG. 19B.
- the joint clip also serves to prevent the two assembled elements from separating and bending.
- FIGS. 20A and 20B show an assembly of substantially different structure, in which rivets (104) coming from the foundry cooperate with an assembly hole (105) of the other half-shell. This structure keeps the symmetry of the half-shells identical.
- a stud (106) will be made on the half-shells which will then be riveted as shown in FIG. 2.
- a surface treatment may be applied externally, for example paint, anodization, shot blasting, etc ..., this without limitation, in order to increase the radiation.
Abstract
Les ailettes transversales (4) sont de forme polygonale, les branches du collecteur-distributeur (3) étant disposées à deux sommets opposés de chacune des ailettes, lesdites ailettes (4) ne débordant pas latéralement des branches du collecteur-distributeur vers l'extérieur de l'échangeur et se raccordant à celles-ci selon un plan incliné. Le corps de l'échangeur est traversé par le flux gazeux. Applications usuelles des échangeurs.The transverse fins (4) are of polygonal shape, the branches of the collector-distributor (3) being arranged at two opposite vertices of each of the fins, the said fins (4) not projecting laterally from the branches of the collector-distributor towards the outside of the exchanger and connecting to them along an inclined plane. The body of the exchanger is crossed by the gas flow. Usual applications of heat exchangers.
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT83900045T ATE16316T1 (en) | 1981-12-21 | 1982-12-21 | HEAT EXCHANGER WITH FINS, PARTICULARLY FOR A CONVECTOR. |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR8124040 | 1981-12-21 | ||
FR8124040A FR2518729A1 (en) | 1981-12-21 | 1981-12-21 | HEAT EXCHANGER WITH FINS IN PARTICULAR FOR DOMESTIC HEATING CONVECTOR |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0097662A1 true EP0097662A1 (en) | 1984-01-11 |
EP0097662B1 EP0097662B1 (en) | 1985-10-30 |
Family
ID=9265298
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP83900045A Expired EP0097662B1 (en) | 1981-12-21 | 1982-12-21 | Bladed heat exchanger, particularly for a convector |
Country Status (7)
Country | Link |
---|---|
EP (1) | EP0097662B1 (en) |
JP (1) | JPS59500009A (en) |
DE (1) | DE3267200D1 (en) |
ES (1) | ES8400193A1 (en) |
FR (1) | FR2518729A1 (en) |
IT (1) | IT1155030B (en) |
WO (1) | WO1983002316A1 (en) |
Family Cites Families (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB182144A (en) * | 1920-12-21 | 1922-06-21 | Edward Lloyd Pease | Improvements in or relating to radiators for heating buildings and the like |
US1607172A (en) * | 1924-06-10 | 1926-11-16 | Bridgeport Rolling Mills Inc | Radiator |
US1890620A (en) * | 1929-02-09 | 1932-12-13 | Metropolitan Eng Co | Radiator and the like |
US1893034A (en) * | 1929-12-13 | 1933-01-03 | American Radiator & Standard | Radiator |
US1929618A (en) * | 1931-02-10 | 1933-10-10 | Nat Radiator Corp | Radiator |
FR826886A (en) * | 1936-12-28 | 1938-04-12 | Improvements to heat exchangers | |
DE855569C (en) * | 1942-11-20 | 1952-11-13 | Westdeutsche Mannesmannroehren | Steel pipe, especially for the tubing of coolers and condensers |
FR997808A (en) * | 1945-07-28 | 1952-01-10 | Improvements to molded material heat exchangers, including heaters, economizers, radiators and the like | |
DE882903C (en) * | 1950-10-08 | 1953-08-03 | Gerhard Dipl-Ing Goebel | Air heater |
DE862161C (en) * | 1951-08-21 | 1953-01-08 | Zimmermann & Co Kommanditgesel | Surface protection for heat exchangers |
GB886402A (en) * | 1958-07-19 | 1962-01-03 | Aerotaps Ltd | Improvements relating to space heating |
GB1298044A (en) * | 1970-12-24 | 1972-11-29 | Mario Andreoli | Improvements in or relating to radiator-convectors for heating systems |
FR2149289B3 (en) * | 1971-08-18 | 1974-05-10 | Guilleux Marc | |
US3763929A (en) * | 1972-01-03 | 1973-10-09 | N Wenig | Convection heat exchanger |
JPS5418502B2 (en) * | 1972-07-11 | 1979-07-07 | ||
DE2324341A1 (en) * | 1973-05-14 | 1974-12-05 | Hans Viessmann | RADIATOR |
FR2235343B1 (en) * | 1973-06-29 | 1976-06-18 | Applimo Applic Thermo Electr | |
US4171015A (en) * | 1977-03-28 | 1979-10-16 | Caterpillar Tractor Co. | Heat exchanger tube and method of making same |
-
1981
- 1981-12-21 FR FR8124040A patent/FR2518729A1/en not_active Withdrawn
-
1982
- 1982-12-21 IT IT24872/82A patent/IT1155030B/en active
- 1982-12-21 DE DE8383900045T patent/DE3267200D1/en not_active Expired
- 1982-12-21 WO PCT/FR1982/000218 patent/WO1983002316A1/en active IP Right Grant
- 1982-12-21 JP JP58500216A patent/JPS59500009A/en active Pending
- 1982-12-21 EP EP83900045A patent/EP0097662B1/en not_active Expired
- 1982-12-21 ES ES518409A patent/ES8400193A1/en not_active Expired
Non-Patent Citations (1)
Title |
---|
See references of WO8302316A1 * |
Also Published As
Publication number | Publication date |
---|---|
EP0097662B1 (en) | 1985-10-30 |
IT8224872A1 (en) | 1984-06-21 |
FR2518729A1 (en) | 1983-06-24 |
IT8224872A0 (en) | 1982-12-21 |
JPS59500009A (en) | 1984-01-05 |
DE3267200D1 (en) | 1985-12-05 |
WO1983002316A1 (en) | 1983-07-07 |
ES518409A0 (en) | 1983-10-16 |
IT1155030B (en) | 1987-01-21 |
ES8400193A1 (en) | 1983-10-16 |
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