EP0795365A1 - Verfahren zur Herstellung eines Strömungsrohres mit veränderlichem Querschnitt - Google Patents
Verfahren zur Herstellung eines Strömungsrohres mit veränderlichem Querschnitt Download PDFInfo
- Publication number
- EP0795365A1 EP0795365A1 EP96200712A EP96200712A EP0795365A1 EP 0795365 A1 EP0795365 A1 EP 0795365A1 EP 96200712 A EP96200712 A EP 96200712A EP 96200712 A EP96200712 A EP 96200712A EP 0795365 A1 EP0795365 A1 EP 0795365A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- tube
- section
- cross
- process according
- wall
- 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.)
- Withdrawn
Links
Images
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
- F28F1/00—Tubular elements; Assemblies of tubular elements
- F28F1/02—Tubular elements of cross-section which is non-circular
- F28F1/025—Tubular elements of cross-section which is non-circular with variable shape, e.g. with modified tube ends, with different geometrical features
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
- B21C37/06—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
- B21C37/15—Making tubes of special shape; Making tube fittings
- B21C37/151—Making tubes with multiple passages
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
- B21C37/06—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
- B21C37/15—Making tubes of special shape; Making tube fittings
- B21C37/16—Making tubes with varying diameter in longitudinal direction
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
- B21C37/06—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
- B21C37/15—Making tubes of special shape; Making tube fittings
- B21C37/20—Making helical or similar guides in or on tubes without removing material, e.g. by drawing same over mandrels, by pushing same through dies ; Making tubes with angled walls, ribbed tubes and tubes with decorated walls
- B21C37/202—Making helical or similar guides in or on tubes without removing material, e.g. by drawing same over mandrels, by pushing same through dies ; Making tubes with angled walls, ribbed tubes and tubes with decorated walls with guides parallel to the tube axis
-
- 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
- B21D26/00—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces
- B21D26/02—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces by applying fluid pressure
- B21D26/033—Deforming tubular bodies
-
- 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
- B21D53/06—Making other particular articles heat exchangers or parts thereof, e.g. radiators, condensers fins, headers of metal tubes
-
- 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
- F28D1/0477—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 being bent in a serpentine or zig-zag
- F28D1/0478—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 being bent in a serpentine or zig-zag the conduits having a non-circular cross-section
-
- 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
- F28F1/02—Tubular elements of cross-section which is non-circular
- F28F1/022—Tubular elements of cross-section which is non-circular with multiple channels
Definitions
- the invention relates to a process for making a fluid flow tube with varying cross section. Such a process is known from US-A-3.625.257.
- This object is achieved by extruding a tube with a constant cross section, positioning the tube in a die having substantially the cross section of the outer wall of the end tube and increasing the pressure inside the tube, thereby deforming the tube so that its outer wall confirms to the die form.
- the fluid flow tube 10 of generally oval cross section has parallel top 11 and bottom 12 webs with the interior being separated into a number of parallel fluid flow passages 13, 14 and 15 by a pair of spaced longitudinal dividing walls or partitions 16 and 17.
- the partitions 16 and 17 can have the form shown in cross section in Fig. 2 and 3 or similar.
- the partition has the shape of two truncated cones fixed to each other by their shortest edges.
- the partitions 16 and 17 have a central section 19 with a reduced thickness offer a reduced strength and thereby allowing the partition 16 or 17 to be broken more easily when an increasing pressure is applied to the interior of the flow channels.
- the flow channels in the undeformed position of the tube are still separated from each other thereby offering the well known advantage of the so called multiport extrusion tubes.
- the partition 16 shown in fig. 3 has a modified cross section. Both sides of the central section 19 are provided with a notch like saving 20 and 21, thereby providing a portion with reduced strength. In this way it is achieved that upon applying pressure the partitions 16 and 17 will preferably split at the portions with reduced strength.
- fig. 4 is shown part of a multiport extrusion tube 25.
- the tube 25 as extruded is shown in cross section in the right hand section A of this figure, wherein the partitions 26, 27, 28 are still in their original form and shape.
- the left hand section B of fig. 4 is shown the tube after being expanded by increasing the pressure internally.
- the partitions 26, 27 and 28 have been broken in the central portion and each half partition is still extending into the interior of the tube 25.
- FIG. 5 - 7 is shown a practical application of the process.
- a tube 35 has been made by means of an extrusion process and thereupon been reshaped to the form shown in fig. 5.
- This form corresponds to the form the tube must have in its final application, in this case an evaporator provided with a suction accumulator. It could also be a condenser with a receiver.
- the tube may be of the type of a multiport extruded tube, but any other tube is also possible.
- Fig. 6 the tube of Fig. 5 has been positioned with a die 36 shown in cross section.
- the die 36 consists of two portions, each provided with savings which are mirror-image of each other, the savings corresponding to the final form the tube 35 must take.
- the savings in the die are very closely fitting to the serpentine bent portion of the tube, but at the portion 37 of the tube 35 there is a more spacious saving 38, giving some freedom of movement to the tube.
- the tube 35 After positioning the tube 35 into one part of the die 36 and closing the die by bringing together its two portions, pressure is applied to the interior of the tube. If needed the die may be preheated and/or heated while the increased pressure is applied. If sufficient pressure is applied the tube portion 37 will be expanded in order to confirm itself to the wall of the die at that location, as shown in fig. 7. After removing the pressure from the interior of the tube and if needed cooling of the tube, the tube with its expanded portion can be removed from the die and further processed to its final application. In order to avoid further deformation each and of the tube can be clamped during the expansion process.
- the tube may be made of different materials, either metal or plastics or any other material capable of maintaining its shape after controlled deformation, the invention is preferably applied with tubes made of aluminum or aluminum alloy.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Geometry (AREA)
- Fluid Mechanics (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP96200712A EP0795365A1 (de) | 1996-03-14 | 1996-03-14 | Verfahren zur Herstellung eines Strömungsrohres mit veränderlichem Querschnitt |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP96200712A EP0795365A1 (de) | 1996-03-14 | 1996-03-14 | Verfahren zur Herstellung eines Strömungsrohres mit veränderlichem Querschnitt |
Publications (1)
Publication Number | Publication Date |
---|---|
EP0795365A1 true EP0795365A1 (de) | 1997-09-17 |
Family
ID=8223784
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP96200712A Withdrawn EP0795365A1 (de) | 1996-03-14 | 1996-03-14 | Verfahren zur Herstellung eines Strömungsrohres mit veränderlichem Querschnitt |
Country Status (1)
Country | Link |
---|---|
EP (1) | EP0795365A1 (de) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19909925A1 (de) * | 1999-03-06 | 2000-09-14 | Audi Ag | Verfahren zum Innenhochdruckumformen eines Hohlprofiles |
WO2001031274A1 (en) * | 1999-10-27 | 2001-05-03 | Brazeway, Inc. | Micro-multiport tubing and method for making same |
WO2003084692A1 (en) * | 2002-04-08 | 2003-10-16 | Norsk Hydro Asa | Process for making a multiple duct distributor and distributor |
BE1018266A3 (nl) * | 2008-08-22 | 2010-08-03 | Atlas Copco Airpower Nv | Werkwijze voor het vervaardigen van een rotor voor een compressor of een motor, een daarbij toegepaste buis en een rotor bekomen met zulke werkwijze |
US20220212152A1 (en) * | 2019-05-31 | 2022-07-07 | Young Ho Yoo | Flow Path Member for Generating Nano-Bubbles, and Integrated Flow Path Unit and Nano-Bubble Generator Using Same |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4580324A (en) * | 1984-06-22 | 1986-04-08 | Wynn-Kiki, Inc. | Method for rounding flat-oval tubing |
JPH0327833A (ja) * | 1989-06-22 | 1991-02-06 | Showa Alum Corp | 熱交換器用扁平多穴チューブ材の製造方法 |
DE4425984A1 (de) * | 1994-07-22 | 1996-01-25 | Bayerische Motoren Werke Ag | Verfahren zum Herstellen eines hohlen Bauteils aus Metall |
-
1996
- 1996-03-14 EP EP96200712A patent/EP0795365A1/de not_active Withdrawn
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4580324A (en) * | 1984-06-22 | 1986-04-08 | Wynn-Kiki, Inc. | Method for rounding flat-oval tubing |
JPH0327833A (ja) * | 1989-06-22 | 1991-02-06 | Showa Alum Corp | 熱交換器用扁平多穴チューブ材の製造方法 |
DE4425984A1 (de) * | 1994-07-22 | 1996-01-25 | Bayerische Motoren Werke Ag | Verfahren zum Herstellen eines hohlen Bauteils aus Metall |
Non-Patent Citations (1)
Title |
---|
PATENT ABSTRACTS OF JAPAN vol. 015, no. 155 (M - 1104) 18 April 1991 (1991-04-18) * |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19909925A1 (de) * | 1999-03-06 | 2000-09-14 | Audi Ag | Verfahren zum Innenhochdruckumformen eines Hohlprofiles |
US7024898B1 (en) | 1999-03-06 | 2006-04-11 | Audi Ag | Method for hydroforming a hollow profile |
WO2001031274A1 (en) * | 1999-10-27 | 2001-05-03 | Brazeway, Inc. | Micro-multiport tubing and method for making same |
WO2003084692A1 (en) * | 2002-04-08 | 2003-10-16 | Norsk Hydro Asa | Process for making a multiple duct distributor and distributor |
BE1018266A3 (nl) * | 2008-08-22 | 2010-08-03 | Atlas Copco Airpower Nv | Werkwijze voor het vervaardigen van een rotor voor een compressor of een motor, een daarbij toegepaste buis en een rotor bekomen met zulke werkwijze |
US20220212152A1 (en) * | 2019-05-31 | 2022-07-07 | Young Ho Yoo | Flow Path Member for Generating Nano-Bubbles, and Integrated Flow Path Unit and Nano-Bubble Generator Using Same |
EP3978105A4 (de) * | 2019-05-31 | 2023-07-05 | Young Ho Yoo | Strömungswegelement zur erzeugung von nanoblasen und integrierte strömungswegeinheit und nanoblasengenerator damit |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP0637474B1 (de) | Verfahren zur Herstellung eines Hochdruckverdichters | |
US5441106A (en) | Heat exchange tubes | |
US4688311A (en) | Method of making a heat exchanger | |
US5531268A (en) | Heat exchanger | |
EP1438545B1 (de) | Rippenrohr für wärmetauscher, wärmetauscher, verfahren zur herstellung eines rippenrohrs für einen wärmetauscher und verfahren zur herstellung eines wärmetauschers | |
CA1280106C (en) | Method of manufacture of manifolds and manifold provided by such method | |
US5311661A (en) | Method of pointing and corrugating heat exchange tubing | |
EP0548850A1 (de) | Wärmetauscher | |
JPS61125593A (ja) | 熱交換器およびその製造方法と装置 | |
US6325141B2 (en) | Tube | |
CZ294169B6 (cs) | Způsob výroby plochých výměníkových trubek | |
US3433300A (en) | Heat exchangers and the method of making same | |
EP1213555A1 (de) | Wärmetauscher, wärmetauscherrohr und verfahren zur herstellung des wärmetauschers und des wärmetauscherrohrs | |
US20050061492A1 (en) | Heat exchanger and process for fabricating same | |
EP0795365A1 (de) | Verfahren zur Herstellung eines Strömungsrohres mit veränderlichem Querschnitt | |
EP0757928B1 (de) | Verfahren zum Herstellen eines Wärmetauschers, insbesondere zum Herstellen eines Kondensators für Fahrzeugklimaanlagen | |
US4680845A (en) | Method of manufacturing lateral header extensions | |
HU212748B (en) | Method of making evaporator for compressor-type refrigerating machine | |
US20020121120A1 (en) | Method and apparatus for manufacturing extruded parts | |
US3546763A (en) | Heat exchangers and the method of making same | |
JPH04105734A (ja) | 熱交換器の製造方法 | |
US2999304A (en) | Method of manufacturing heat exchangers | |
EP0574645B1 (de) | Verfahren zum Verbinden von Warmaustauscherelementen an einer Platte und Werkzeug zum Verformen des Rohrendes von einem länglichen Durchschnitt zu einem kreisförmigen Durchschnitt | |
EP0906796A1 (de) | Verfahren zur Herstellung eines Wärmetauschers | |
JPH08267123A (ja) | 押出用ダイ |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT BE CH DE DK ES FR GB GR IE IT LI LU MC NL PT SE |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION HAS BEEN WITHDRAWN |
|
18W | Application withdrawn |
Withdrawal date: 19980220 |