US20080029257A1 - Plate Heat Exchanger - Google Patents
Plate Heat Exchanger Download PDFInfo
- Publication number
- US20080029257A1 US20080029257A1 US11/632,582 US63258205A US2008029257A1 US 20080029257 A1 US20080029257 A1 US 20080029257A1 US 63258205 A US63258205 A US 63258205A US 2008029257 A1 US2008029257 A1 US 2008029257A1
- Authority
- US
- United States
- Prior art keywords
- heat exchanger
- plates
- plate
- tops
- ridges
- 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.)
- Abandoned
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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
-
- 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
-
- 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
- F28D9/0031—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 for one heat-exchange medium being formed by paired plates touching each other
- F28D9/0043—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 for one heat-exchange medium being formed by paired plates touching each other the plates having openings therein for circulation of at least one heat-exchange medium from one conduit to another
- F28D9/005—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 for one heat-exchange medium being formed by paired plates touching each other the plates having openings therein for circulation of at least one heat-exchange medium from one conduit to another the plates having openings therein for both heat-exchange media
Definitions
- the present invention relates to a plate heat exchanger comprising at least two separate flow paths for primary and secondary fluids to exchange heat, the said two flow paths being substantially defined by permanently interconnected heat exchanger plates provided with a herring bone pattern of ridges and depressions and offering different pressure drops at equal mass flows of the two fluids.
- the inlet temperature of the heating water may be e.g. 75° C., and the outlet temperature thereof may be about 60° C.
- the inlet temperature of the tap water may be about 10° C. and the outlet temperature thereof may be 55° C. This indicates that the mass flow of the heating water must be 2.5 times the mass flow of the tap water. Therefore, it is economical to make the cross section of the flow path for the heating water wider than that of the tap water. E.g. by making the tops of the herring bone pattern flat—and thus wider—while the bottoms are unaltered this may be obtained.
- the Japanese Patent Application No. 11173771 A published Jul. 2, 1999 discloses a plate heat exchanger having different pressure drops in the flow paths in case of equal mass flows.
- This known device is adapted to exchange heat between water and a cooling fluid the water flowing through the flow path having the smaller pressure drop.
- the Japanese Patent Application No. 11281283 A also discloses a heat exchanger in which the pressure drops of two heat exchanging fluids are different in case of equal mass flows.
- the flow paths forming a herring bone pattern comprise channels having greater cross sectional flow area provided with two small secondary depressions in the channels of greater cross section. This involves that the flow path having a total relatively high pressure drop will consist of parts causing very different pressure drops. This is an uneconomical way of using the material in the exchanger for exchanging heat. Also—as the pitch will increase with increasing numbers of the secondary depressions—the mechanical strength of the exchanger will decrease due to the smaller numbers of contact points at which the plates could be rigidly connected.
- the object of the present invention is to design an “asymmetric” plate heat exchanger in which the material of the plates is used in a more economic way and thus in which the efficiency is improved while maintaining a high mechanical strength of the exchanger
- the depressions in at least some pairs of plates defining the flow path having the lower pressure drop at least partly are alternatively of two different press depths measured from the plan defined by the tops of the ridges of the herring bone pattern of the heat exchanger plate, the smaller being located between two tops of the herring bone pattern and being at least 40% of the greater, and thereby that the tops of the ridges engaging the tops of a neighboring plate to define a flow channel having high pressure drop substantially contact each other along points defined by crossing lines.
- FIG. 1 is a plan view of plate in one known type of a plate heat exchanger.
- FIG. 2 schematically shows the crossing patterns of two plates according to FIG. 1 placed on each other—after one of them has been turned in its plan.
- FIG. 3 is a section along the line A-A in FIG. 1 .
- FIG. 4 is a section along the line B-B in FIG. 2 in a stack of four plates according to FIG. 1 .
- FIG. 5 is a section corresponding to FIG. 4 , but through a known “asymmetric” plate heat exchanger.
- FIG. 6 is a section corresponding to those of FIGS. 4 and 5 , but through a plate heat exchanger according to the Japanese Patent Application No. 11173771 A.
- FIG. 7 is a section corresponding to FIG. 6 , but through a plate heat exchanger according to the Japanese Patent application No. 11281283 A.
- FIG. 8 shows a section corresponding to those shown in FIGS. 4-7 through two neighboring plates of a heat exchanger according to the present invention—the plates being drawn apart.
- FIG. 9 is a section through four plates in heat exchanger according to the present invention.
- FIGS. 10-12 show alternative embodiments of the invention.
- FIG. 1 is a plan view of a plate 1 of a known and widely used plate heat exchanger provided with a herring bone pattern of ridges 2 and depressions 3 .
- a stack of plates of this type is formed after turning each other plate in the stack in its plane.
- FIG. 2 illustrates how the ridges and depressions then will cross each other.
- FIG. 3 which is a section along the line A-A in FIG. 1 —illustrates the pitch P and the press depth D both values being of importance for characterising the plate heat exchanger.
- FIG. 4 is a section along the line B-B of FIG. 2 through four plates in a heat exchanger according to the FIGS. 1-3 .
- the two flows of heat exchanging fluids limited by the plates are shown by different hatching. It will be understood that the two flow paths are offering equal pressure drops at equal mass flows.
- FIG. 6 shows a prior art plate heat exchanger according to the Japanese Patent Application No. 11173771 which shows a plate heat exchanger of the “asymmetric” type in which the pairs of plates limiting the flow path having the greater cross sectional area are provided with depressions of less depths D 2 than the press depths D 1 of tops of the ridges of the herring bone pattern. This has been done in order to make the plate heat exchanger more resistant against damage caused by ice formations. The plan contact areas between the plates and not used for heat exchange are still existing in this embodiment.
- FIG. 8 shows a section corresponding to the sections shown in FIGS. 4-7 through two heat exchanger plates according to the present invention.
- a primary press depth press depth i. e. the distance between the plan defined by the tops of the ridges and the lowest plan defined by bottoms of ridges—has been indicated as D 1 .
- a secondary press depth defined as the distance between the plan of the tops of the ridges of the herring bone pattern and a plan of the bottom of minor depressions has been designated by D 2 .
- the pitch of the herringbone pattern has been indicated by P.
- FIG. 9 is a section through four plates 4 , 5 , 6 and 7 of the types shown in FIG. 8 and corresponding to the sections C-C shown in FIGS. 4-7 .
- the three channels formed for the flows exchanging heat are shown by two different hatchings. It will be understood from FIG. 9 that the resistance for the flow limited by the plates 5 and 6 is higher than the resistance for the flow limited by the plates 4 and 5 or 6 and 7 .
- the contact areas between the plates are kept at a minimum, but the number of contacts at which the plates are interconnected by soldering is substantial and will give mechanical strength to the heat exchanger. It is essential to maintain a substantial mass flow of fluid through the cross sections designed by 8 in FIG. 9 .
- the mass flow through the area 8 is nearly proportional to its cross sectional area and this is in turn mainly dependant on the magnitude of the press depth D 2 .
- a small press depth D 2 e.g. as shown in FIG. 7 —will make the areas 8 small and may almost block passage of fluid.
- a small secondary press depth will the have nearly the same effect as the large contact areas between the ridges of the herring bone pattern shown in FIG. 5 .
- the secondary press depth D 2 should be at least 40 percent of the press depth D 1 —preferably about 50 percent thereof.
- FIG. 10 is a section corresponding to that of FIG. 9 , but in which only the plate 4 in a pair of plates 4 , 5 has two different press depths.
- the two plates 4 , 5 according to FIG. 10 have not patterns which are mirror images of each other and may be designed so that a turning of a plate will not be necessary in order to obtain crossing of the contacting ridges.
- the secondary press depth D 2 of the plate 5 is greater than the secondary press depth D 3 of the plate 6 .
- FIG. 12 shows an embodiment in which the plate 4 has two different secondary press depths.
- the press depth D 2 is used in one area of the plate and the press depth D 4 in another area of the plate.
- a heat exchanger according to the present invention may comprise other combinations of pairs of plates than those described above. E.g. some pairs may be of the known type shown in FIG. 4 providing equal pressure drops in the flow channels for the heat exchanging media—in case of equal mass flows.
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
- Separation By Low-Temperature Treatments (AREA)
- Fuel Cell (AREA)
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP04020494.3A EP1630510B2 (de) | 2004-08-28 | 2004-08-28 | Plattenwärmetauscher |
EP04020494.3 | 2004-08-28 | ||
PCT/EP2005/007329 WO2006024340A1 (en) | 2004-08-28 | 2005-07-07 | A plate heat exchanger |
Publications (1)
Publication Number | Publication Date |
---|---|
US20080029257A1 true US20080029257A1 (en) | 2008-02-07 |
Family
ID=34926346
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US11/632,582 Abandoned US20080029257A1 (en) | 2004-08-28 | 2005-07-07 | Plate Heat Exchanger |
Country Status (17)
Country | Link |
---|---|
US (1) | US20080029257A1 (de) |
EP (1) | EP1630510B2 (de) |
JP (1) | JP2008511811A (de) |
KR (1) | KR20070048707A (de) |
CN (1) | CN100513968C (de) |
AT (1) | ATE350639T1 (de) |
AU (1) | AU2005279446C1 (de) |
CY (1) | CY1106418T1 (de) |
DE (1) | DE602004004114T3 (de) |
DK (1) | DK1630510T3 (de) |
ES (1) | ES2279267T5 (de) |
MY (1) | MY136232A (de) |
PL (1) | PL1630510T5 (de) |
PT (1) | PT1630510E (de) |
SI (1) | SI1630510T1 (de) |
TW (1) | TWI320089B (de) |
WO (1) | WO2006024340A1 (de) |
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US20110024097A1 (en) * | 2008-04-04 | 2011-02-03 | Alfa Laval Corporate Ab | Plate Heat Exchanger |
US20110209861A1 (en) * | 2010-02-26 | 2011-09-01 | Mitsubishi Electric Corporation | Method of manufacturing plate heat exchanger and plate heat exchanger |
US20110247790A1 (en) * | 2008-11-12 | 2011-10-13 | Alfa Laval Corporate Ab | Heat exchanger |
WO2012145262A1 (en) * | 2011-04-19 | 2012-10-26 | Modine Manufacturing Company | Heat exchanger |
US20130062039A1 (en) * | 2011-09-08 | 2013-03-14 | Thermo-Pur Technologies, LLC | System and method for exchanging heat |
US20130180699A1 (en) * | 2010-07-08 | 2013-07-18 | Swep International | Plate heat exchanger |
US20140008047A1 (en) * | 2011-04-18 | 2014-01-09 | Mitsubishi Electric Corporation | Plate heat exchanger and heat pump apparatus |
US8869398B2 (en) | 2011-09-08 | 2014-10-28 | Thermo-Pur Technologies, LLC | System and method for manufacturing a heat exchanger |
US20150153113A1 (en) * | 2013-12-03 | 2015-06-04 | International Business Machines Corporation | Heat sink with air pathways through the base |
US20160250703A1 (en) * | 2013-10-29 | 2016-09-01 | Swep International Ab | A method of barzing a plate heat exchanger using screen printed brazing material; a plate heat exchanger manufacturing by such method |
US20160313071A1 (en) * | 2013-12-10 | 2016-10-27 | Swep International Ab | Heat exchanger with improved flow |
US9534854B2 (en) | 2010-06-24 | 2017-01-03 | Alfa Laval Corporate Ab | Heat exchanger plate and a plate heat exchanger |
US9618280B2 (en) | 2008-05-22 | 2017-04-11 | Valeo Systemes Thermiques | Plate-type heat exchanger, particularly for motor vehicles |
US9874409B2 (en) | 2011-07-13 | 2018-01-23 | Mitsubishi Electric Corporation | Plate heat exchanger and heat pump apparatus |
US10473403B2 (en) | 2010-11-19 | 2019-11-12 | Danfoss A/S | Heat exchanger |
DE102019008914A1 (de) * | 2019-12-20 | 2021-06-24 | Stiebel Eltron Gmbh & Co. Kg | Wärmepumpe mit optimiertem Kältemittelkreislauf |
US11199112B2 (en) * | 2017-08-18 | 2021-12-14 | Nederlandse Organisatie Voor Toegepast-Natuurwetenschappelijk Onderzoek Tno | Method and system for heat recovery |
US11486657B2 (en) * | 2018-07-17 | 2022-11-01 | Tranter, Inc. | Heat exchanger heat transfer plate |
US20230036224A1 (en) * | 2020-01-30 | 2023-02-02 | Swep International Ab | A brazed plate heat exchanger and use thereof |
EP4098965A4 (de) * | 2020-02-05 | 2023-07-19 | Hisaka Works, Ltd. | Plattenwärmetauscher |
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JP4827905B2 (ja) * | 2008-09-29 | 2011-11-30 | 三菱電機株式会社 | プレート式熱交換器、及びこれを搭載した空気調和機 |
EP2233873A1 (de) * | 2009-03-12 | 2010-09-29 | Robert Bosch GmbH | Plattenwärmeaustauscher |
KR101151754B1 (ko) * | 2009-04-14 | 2012-06-15 | 한라공조주식회사 | 판형 열교환기 |
KR101102433B1 (ko) * | 2009-04-28 | 2012-01-05 | 한국신발피혁연구소 | 판형 열교환기 |
PT2267391T (pt) * | 2009-06-26 | 2018-06-20 | Swep Int Ab | Permutador de calor assimétrico |
DE202009017100U1 (de) | 2009-12-18 | 2011-04-28 | Robert Bosch Gmbh | Plattenwärmetauscher |
KR101155811B1 (ko) * | 2010-04-05 | 2012-06-12 | 엘지전자 주식회사 | 판형 열교환기 및 이를 포함하는 공기 조화기 |
FR2959763B3 (fr) * | 2010-05-07 | 2012-06-01 | Energy Harvesting Tech | Ensemble sanitaire a recuperation d'energie thermique |
JP5661119B2 (ja) * | 2010-11-12 | 2015-01-28 | 三菱電機株式会社 | プレート式熱交換器及びヒートポンプ装置 |
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US20230038008A1 (en) | 2021-07-26 | 2023-02-09 | Vacuumschmelze Gmbh & Co. Kg | Brazing foil, object and method for brazing |
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US4314605A (en) * | 1976-02-28 | 1982-02-09 | Hisaka Works Ltd. | Condenser |
US4987955A (en) * | 1987-05-29 | 1991-01-29 | Alfa-Laval Thermal Ab | Permanently joined plate heat exchanger |
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SE443870B (sv) † | 1981-11-26 | 1986-03-10 | Alfa Laval Ab | Plattvermevexlare med korrugerade plattor der korrugeringarna stoder mot nerliggande plattas korrugeringar utom i ett antal forsenkta partier |
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-
2004
- 2004-08-28 PL PL04020494T patent/PL1630510T5/pl unknown
- 2004-08-28 DK DK04020494T patent/DK1630510T3/da active
- 2004-08-28 AT AT04020494T patent/ATE350639T1/de active
- 2004-08-28 ES ES04020494.3T patent/ES2279267T5/es active Active
- 2004-08-28 SI SI200430190T patent/SI1630510T1/sl unknown
- 2004-08-28 EP EP04020494.3A patent/EP1630510B2/de active Active
- 2004-08-28 PT PT04020494T patent/PT1630510E/pt unknown
- 2004-08-28 DE DE602004004114.9T patent/DE602004004114T3/de active Active
-
2005
- 2005-07-07 US US11/632,582 patent/US20080029257A1/en not_active Abandoned
- 2005-07-07 WO PCT/EP2005/007329 patent/WO2006024340A1/en active Application Filing
- 2005-07-07 KR KR1020077002454A patent/KR20070048707A/ko not_active Application Discontinuation
- 2005-07-07 JP JP2007528635A patent/JP2008511811A/ja active Pending
- 2005-07-07 CN CNB2005800288713A patent/CN100513968C/zh not_active Ceased
- 2005-07-07 AU AU2005279446A patent/AU2005279446C1/en not_active Ceased
- 2005-07-12 TW TW094123481A patent/TWI320089B/zh active
- 2005-07-26 MY MYPI20053424A patent/MY136232A/en unknown
-
2007
- 2007-03-27 CY CY20071100426T patent/CY1106418T1/el unknown
Patent Citations (7)
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US4314605A (en) * | 1976-02-28 | 1982-02-09 | Hisaka Works Ltd. | Condenser |
US4987955A (en) * | 1987-05-29 | 1991-01-29 | Alfa-Laval Thermal Ab | Permanently joined plate heat exchanger |
US5638899A (en) * | 1992-01-27 | 1997-06-17 | Alfa-Laval Thermal Ab | Welded plate heat exchanger |
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US6016865A (en) * | 1996-04-16 | 2000-01-25 | Alfa Laval Ab | Plate heat exchanger |
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Also Published As
Publication number | Publication date |
---|---|
JP2008511811A (ja) | 2008-04-17 |
TW200607971A (en) | 2006-03-01 |
PT1630510E (pt) | 2007-04-30 |
TWI320089B (en) | 2010-02-01 |
EP1630510B2 (de) | 2014-03-05 |
ES2279267T5 (es) | 2014-06-11 |
DE602004004114D1 (de) | 2007-02-15 |
KR20070048707A (ko) | 2007-05-09 |
EP1630510A1 (de) | 2006-03-01 |
MY136232A (en) | 2008-08-29 |
ATE350639T1 (de) | 2007-01-15 |
AU2005279446C1 (en) | 2014-06-12 |
CY1106418T1 (el) | 2011-10-12 |
DE602004004114T2 (de) | 2007-07-12 |
ES2279267T3 (es) | 2007-08-16 |
PL1630510T3 (pl) | 2007-05-31 |
AU2005279446A1 (en) | 2006-03-09 |
CN100513968C (zh) | 2009-07-15 |
DK1630510T3 (da) | 2007-04-23 |
PL1630510T5 (pl) | 2014-07-31 |
WO2006024340A1 (en) | 2006-03-09 |
DE602004004114T3 (de) | 2014-07-24 |
CN101069058A (zh) | 2007-11-07 |
EP1630510B1 (de) | 2007-01-03 |
SI1630510T1 (sl) | 2007-06-30 |
AU2005279446B2 (en) | 2010-02-18 |
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