EP1901021A1 - Tube pour echangeur de chaleur - Google Patents
Tube pour echangeur de chaleur Download PDFInfo
- Publication number
- EP1901021A1 EP1901021A1 EP06732157A EP06732157A EP1901021A1 EP 1901021 A1 EP1901021 A1 EP 1901021A1 EP 06732157 A EP06732157 A EP 06732157A EP 06732157 A EP06732157 A EP 06732157A EP 1901021 A1 EP1901021 A1 EP 1901021A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- heat exchanger
- exchanger tube
- side passage
- upstream side
- air flow
- 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- Withdrawn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
- 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
- F28D1/03—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 plate-like or laminated conduits
- F28D1/0391—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 plate-like or laminated conduits a single plate being bent to form one or more conduits
-
- 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
- B21C37/156—Making tubes with wall irregularities
- B21C37/158—Protrusions, e.g. dimples
-
- 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
-
- 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
- F28F3/04—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being integral with the element
- F28F3/042—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being integral with the element in the form of local deformations of the element
- F28F3/044—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being integral with the element in the form of local deformations of the element the deformations being pontual, e.g. dimples
-
- 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
- F28F3/04—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being integral with the element
- F28F3/042—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being integral with the element in the form of local deformations of the element
- F28F3/046—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being integral with the element in the form of local deformations of the element the deformations being linear, e.g. corrugations
Definitions
- the present invention relates to a heat exchanger tube which exchanges heat between air flowing in an outer circumference and coolant flowing in an internal passage.
- This heat exchanger tube includes an external wall portion having a flat elliptical shape in cross section, and a partition wall for partitioning a passage within the external wall portion into two.
- the partition wall is set to a location such that an upstream side passage and a downstream side passage have the same width dimension, and is provided with two partition pieces which face one another.
- the heat exchanger tube having this kind of structure is fabricated from a single plate material, for example, in the following way. Both ends of a thin and long plate material in the width direction are folded to form the partition pieces, the plate material is then bended into a flat elliptical shape, and the partition pieces on both ends are faced to each other. Thereafter, the fabrication completes as the surfaces faced to each other by the bending are joined together by brazing or the like.
- a heat exchanger is fabricated using the heat exchanger tube formed as above.
- the heat exchanger is installed such that an air flow passes the outer circumference along the width direction of the heat exchanger tube, and heat is exchanged between an air flow passing along the outer circumference and the coolant flowing inside along the upstream side passage and downstream side passage. Since the passage is divided into two by the partition wall, the heat exchanger tube is robust against a pressing force in the direction of crushing the passages and is highly pressure resistant.
- Patent Document 1 Japanese Patent Laid-Open Publication No. Heisei 10-305341
- the heat exchanger efficiency of the coolant flowing in the passages is different depending on upstream and downstream positions of an air flow passing along the outer circumference.
- the partition wall was set without consideration of heat exchanger efficiency of the coolant, and therefore, in terms of heat exchanger efficiency, the conventional heat exchanger tube was less than the best as a heat exchanger tube having a partition wall.
- an objective of the present invention is to provide a heat exchanger which includes a partition wall and is able to achieve an improvement of heat exchanger efficiency.
- a heat exchanger tube is arranged in a direction across an air flow such that air flows in an external circumference along with a width direction of the heat exchange tube, and comprises an upstream side passage located on an upstream side of the air flow, a downstream side passage located on a downstream side of the air flow, and a partition wall for partitioning the upstream side passage and the downstream side passage, wherein the partition wall is arranged such that a width of the upstream side passage is larger than a width of the downstream side passage.
- heat exchanger efficiency of a coolant flowing in the passages shows a pattern where the heat exchanger efficiency becomes highest in an uppermost stream location of the air flow, decreases gradually towards the downstream side, and remains low in downstream locations past the center location.
- the partition wall does not exist in a location where the heat exchanger efficiency is high so that a coolant flows in the entire tube and is used for heat exchange, and the partition wall is located at a position where the heat exchanger efficiency is approximately lowest.
- the upstream side passage may be provided with a projecting portion which projects from at least one side of an external wall portion.
- the projecting portion enhances pressure resistance of the upstream side passage. Therefore, pressure resistance of the heat exchanger tube as a whole is improved. Moreover, the projecting portion increases the inner circumference area of the upstream side passage and the surface area of the external wall portion thereof, and, at the same time, a coolant flow is disturbed by the projecting portion, which contributes to an improvement of heat exchange efficiency.
- the projecting portions may be provided in a plurality of locations with intervals therebetween along a longitudinal direction.
- a coolant flowing in the upstream side passage is agitated by the projecting portions in the plurality of locations, and heat exchange is enhanced. Hence, an improvement of heat exchange efficiency is achieved.
- a heat exchanger 1 is arranged in an air flow passage 3 of an air conditioning unit 2.
- the heat exchanger 1 is provided with a plurality of heat exchanger tubes 10 arranged in parallel with one another with an interval therebetween, and a pair of headers 11 fixed to both ends of each of the plurality of the heat exchanger tubes 10.
- the coolant flowed into the headers 11 is to be discharged from the headers 11 via the heat exchanger tube 10 along a predetermined path.
- Each of the heat exchanger tubes 10 is arranged along with the direction across the air flow such that the air flow within the air flow passage 3 passes the external circumference along the width direction of the heat exchange tube 10.
- the heat exchanger tube 10 includes an external wall portion 12 of which cross section has a flat elliptical shape, and a partition wall 14 which partitions a passage 13 within the external wall portion 12 into two.
- the passage 13 is partitioned by the partition wall 14 into an upstream side passage 13a located on the upstream side of the air flow, and a downstream side passage 13b located on the downstream side of the air flow.
- the partitioning position by the partition wall 14 is set to a location so that a width W1 of the upstream side passage 13a is wider, and a width W2 ( ⁇ W1) of the downstream side passage 13b is narrower.
- the partition wall 14 includes a pair of partition pieces 14a and 14a which are integrally connected to both ends of the external wall portion 12 in the width direction thereof, respectively, and brazing is performed between both partition pieces 14a and 14a, and between the end surface of each of the partition pieces 14a and 14a and the inner surface of the external wall portion 12.
- a projecting portion 15 is provided in approximately the center of the upstream side passage 13a in the width direction thereof.
- the projecting portion 15 includes a pair of projecting pieces 15a provided at positions facing each other from both sides in the external wall 12, the end surfaces of both projecting pieces 15a and 15a are brought into contact with each other, and the contact portion is brazed.
- the projecting portion 15 is continuously provided in an approximately entire area in the longitudinal direction of the heat exchanger tube 10.
- a manufacturing apparatus 20 is provided with a first bending roller portion 12, a coating roller portion 22, a drying portion 23, and a second bending roller portion 24.
- the first bending roller 21 bends both end portions of, for example, a long aluminum material (see FIG. 7(a) ) 25 wrapped into a roller shape, in order to form the partition pieces 14a and 14a, and bend two locations in the center to form the projecting pieces (beads) 15a and 15a (see FIGS. 7(b) and 7(c) ).
- a long aluminum material see FIG. 7(a)
- the coating roller portion 22 includes a material accommodating portion 26 for accommodating a mixture of flux, a brazing filler metal, and binder, a first transfer roller 27, a second transfer roller 28, and a transfer sheet 29. Thereafter, a mixed coating material 1 of flux, a brazing filler metal, and binder is applied to the end surfaces of the partition pieces 14a and 14a on both sides and two projecting portions 15a and 15a formed by the first bending roller portion 21 (see FIGS. 6 and 7(d) ).
- the drying portion 23 volatizes the binder contained in the mixed coating material a which has been coated on the material 25.
- the second bending roller portion 24 bends the material 25 bent into a predetermined shape into a shape of the heat exchanger tube 10 (see FIGS. 7(e) and 7(f) ).
- the heat exchanger tube 10 provisionally assembled as a constituent of the heat exchanger 1 is heat-treated in a heating furnace, thus brazing the portions where the mixed coating material a has been applied.
- the heat exchanger efficiency shows a pattern where it is highest in the uppermost stream position of the air flow, gradually declines towards the downstream side, and remains low at a downstream location or after past the center location.
- the partition wall 14 does not exist in the location where heat exchanger efficiency is high and the coolant flows in the entire tube for heat exchange, while the partition wall 14 is positioned in the location where the heat exchanger efficiency is reduced to approximately the lowest level. Therefore, an improvement of heat exchanger efficiency of the heat exchanger tube 10 as a whole is achieved.
- the upstream side passage 13a having a larger width than that of the downstream side passage 13b has a structure which is highly pressure resistant. Hence, pressure resistance of the heat exchanger tube as a whole can be maintained.
- providing the projecting portion 15 increases the internal circumference area of the upstream side passage 13a and the surface area of the outer wall portion 12 of the upstream side passage 13a, which thus contributes to an improvement of heat exchanger efficiency.
- FIG. 8 shows a second embodiment of the present invention, and is a partial perspective view of a heat exchanger tube 30.
- the heat exchanger tube 30 according to the second embodiment of the present invention provided is projecting portions 31 in a plurality of locations separated from each other with an interval therebetween, instead of a projecting portion provided continuously in the longitudinal direction of the heat exchanger tube as described in the first embodiment.
- a coolant flowing in an upstream side passage 13a is agitated and disturbed by the projecting portions 31 in a plurality of locations, thus enhancing heat exchange. Accordingly, heat exchange efficiency is improved.
- FIG. 9 shows a third embodiment of the present invention, and is a partial perspective view of a heat exchanger tube 32.
- the heat exchanger tube 32 according to the third embodiment is common to the heat exchanger tube of the second embodiment in terms of having a plurality of projecting portions 33 with an interval therebetween, but is different in that the projecting portions 33 of the heat exchanger tube 32 have an elliptic shape instead of the long and thin rectangular shape as described in the second embodiment.
- a coolant flowing in an upstream side passage 13a is also agitated by the projecting portions 33 in the plurality of locations and heat exchange efficiency is enhanced.
- FIG. 10 shows a fourth embodiment of the present invention, and is a partial perspective view of a heat exchanger tube 34.
- projecting portions 35 of the heat exchanger tube 34 according to the fourth embodiment are elliptic similarly to those of the third embodiment, but the projecting portions 35 are provided so that the orientations of the elliptic shape thereof are angled with regard to the longitudinal direction of the heat exchanger tube 34.
- a coolant flowing in an upstream side passage 13a is agitated by the projecting portions 35 in a plurality of locations and heat exchange is enhanced. Therefore, heat exchanger efficiency is improved.
- FIG. 11 shows the fifth embodiment of the present invention, and is a partial perspective view of a heat exchanger tube 36.
- projecting portions 37 of the heat exchanger tube 36 according to the fifth embodiment of the present invention have an elliptic shape similarly to those of the third and fourth embodiments described above, but are different in that the elliptic shapes in different orientations are provided alternately, in which the long diameter of the elliptic shape is oriented in the same direction to the longitudinal direction of the heat exchanger tube 36, or the long diameter of the same is oriented in an angled direction against the longitudinal direction of the heat exchanger tube 36.
- a coolant flowing in an upstream side passage 13a is agitated by the projecting portions 37 in the plurality of locations and heat exchange is enhanced. Hence, heat exchanger efficiency is improved.
- each of the projecting portions 15, 31, 33, 35 and 37 is formed of the pair of projecting pieces 15a (or those not shown) provided in the opposite locations in the external wall portion 12 which form the upstream side passage 13a, it may be formed of only a projection piece projecting towards the inside from either one of the locations in the external wall portion 12.
- the projecting pieces 15a and 15a (or those not shown) on both sides are formed to have the same height which is approximately a half of the width of the upstream side passage 13a, but the projecting pieces may be formed so that one of the projecting pieces may be higher than the half of the width and the other may be shorter than the half of the width.
- heat exchanger efficiency is highest in the uppermost stream location of an air flow, gradually decreases towards the downstream side, and remains low in downstream locations past a center location.
- a partition wall does not exist in a location where the heat exchanger efficiency is high so that a coolant flows in the entire tube and is used for heat exchange, and the partition wall is located at a position where the heat exchanger efficiency is approximately lowest.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Geometry (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2005166206A JP2006337005A (ja) | 2005-06-06 | 2005-06-06 | 熱交換器用チューブ |
PCT/JP2006/308299 WO2006132037A1 (fr) | 2005-06-06 | 2006-04-20 | Tube pour echangeur de chaleur |
Publications (1)
Publication Number | Publication Date |
---|---|
EP1901021A1 true EP1901021A1 (fr) | 2008-03-19 |
Family
ID=37498244
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP06732157A Withdrawn EP1901021A1 (fr) | 2005-06-06 | 2006-04-20 | Tube pour echangeur de chaleur |
Country Status (5)
Country | Link |
---|---|
US (1) | US20090223656A1 (fr) |
EP (1) | EP1901021A1 (fr) |
JP (1) | JP2006337005A (fr) |
CN (1) | CN101189485A (fr) |
WO (1) | WO2006132037A1 (fr) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2010112671A (ja) * | 2008-11-10 | 2010-05-20 | Showa Denko Kk | 熱交換器用チューブの製造方法 |
JP5803768B2 (ja) | 2012-03-22 | 2015-11-04 | 株式会社デンソー | 熱交換器用フィンおよび熱交換器 |
CN103047759B (zh) * | 2012-12-28 | 2016-04-20 | 罗小兵 | 一种热交换燃烧室 |
DE102015112833A1 (de) * | 2015-08-05 | 2017-02-09 | Valeo Klimasysteme Gmbh | Wärmetauscher sowie Fahrzeugklimaanlage |
JP2019052770A (ja) | 2017-09-12 | 2019-04-04 | セイコーエプソン株式会社 | 熱交換装置、冷却装置及びプロジェクター |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0473592A (ja) * | 1990-07-11 | 1992-03-09 | Matsushita Electric Ind Co Ltd | 熱交換器 |
US6371201B1 (en) * | 1996-04-03 | 2002-04-16 | Ford Global Technologies, Inc. | Heat exchanger and method of assembly for automotive vehicles |
JPH10197174A (ja) * | 1996-12-27 | 1998-07-31 | Zexel Corp | 熱交換器 |
JP3206806B2 (ja) * | 1998-04-03 | 2001-09-10 | カルソニックカンセイ株式会社 | アルミニウム製熱交換器コア |
FR2788123B1 (fr) * | 1998-12-30 | 2001-05-18 | Valeo Climatisation | Evaporateur, appareil de chauffage et/ou de climatisation et vehicule comportant un tel evaporateur |
JP2001041675A (ja) * | 1999-07-28 | 2001-02-16 | Mitsubishi Heavy Ind Ltd | 熱交換器用チューブおよび熱交換器 |
CN1826503A (zh) * | 2003-07-15 | 2006-08-30 | 奥托库姆普铜产品公司 | 含压力传热管及其制造方法 |
KR100518856B1 (ko) * | 2003-09-04 | 2005-09-30 | 엘지전자 주식회사 | 플랫 튜브 열 교환기 |
US8267163B2 (en) * | 2008-03-17 | 2012-09-18 | Visteon Global Technologies, Inc. | Radiator tube dimple pattern |
-
2005
- 2005-06-06 JP JP2005166206A patent/JP2006337005A/ja not_active Withdrawn
-
2006
- 2006-04-20 CN CNA2006800198590A patent/CN101189485A/zh active Pending
- 2006-04-20 WO PCT/JP2006/308299 patent/WO2006132037A1/fr active Application Filing
- 2006-04-20 EP EP06732157A patent/EP1901021A1/fr not_active Withdrawn
- 2006-04-20 US US11/916,738 patent/US20090223656A1/en not_active Abandoned
Non-Patent Citations (1)
Title |
---|
See references of WO2006132037A1 * |
Also Published As
Publication number | Publication date |
---|---|
CN101189485A (zh) | 2008-05-28 |
WO2006132037A1 (fr) | 2006-12-14 |
JP2006337005A (ja) | 2006-12-14 |
US20090223656A1 (en) | 2009-09-10 |
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STAA | Information on the status of an ep patent application or granted ep patent |
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18W | Application withdrawn |
Effective date: 20100226 |