EP2598820A1 - Plattenwärmeübertrager zum verdampfen einer flüssigkeit - Google Patents
Plattenwärmeübertrager zum verdampfen einer flüssigkeitInfo
- Publication number
- EP2598820A1 EP2598820A1 EP11758372.4A EP11758372A EP2598820A1 EP 2598820 A1 EP2598820 A1 EP 2598820A1 EP 11758372 A EP11758372 A EP 11758372A EP 2598820 A1 EP2598820 A1 EP 2598820A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- heat exchanger
- flow
- waves
- plate heat
- channels
- 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
- F28D9/0031—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
-
- 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
-
- 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
- F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
- F28D2021/0019—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for
- F28D2021/0061—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for for phase-change applications
- F28D2021/0064—Vaporizers, e.g. evaporators
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F13/00—Arrangements for modifying heat-transfer, e.g. increasing, decreasing
- F28F13/06—Arrangements for modifying heat-transfer, e.g. increasing, decreasing by affecting the pattern of flow of the heat-exchange media
- F28F13/12—Arrangements for modifying heat-transfer, e.g. increasing, decreasing by affecting the pattern of flow of the heat-exchange media by creating turbulence, e.g. by stirring, by increasing the force of circulation
Definitions
- the invention relates to a plate heat exchanger for evaporating a liquid consisting of a stack of identical, but each rotated by 180 ° contiguous, at its peripheral edge sealingly interconnected, rectangular heat transfer plates, the alternating flow channels for a fluid to be evaporated and include for a heating fluid and which are provided with a corrugation pattern of angularly aligned to the flow direction, in the flow channels crossing waves and in the corner areas with openings for forming the inlet and outlet openings of the flow channels are provided.
- a plate heat exchanger known from DE 3721132 A1 for evaporating a liquid comprises heat exchange plates with wave patterns that remain the same over their entire heat exchange surface. This is not efficient in terms of heat exchange capacity because not all of the liquid to be evaporated undergoes the same heat treatment on the way in the flow channel.
- a known from DE 69102755 T2 plate heat exchanger for evaporating a liquid (plate evaporator) makes use of the known fact that the heat exchange with a flowing in the flow channel between two heat exchange plates fluid is influenced by how the adjacent wave peaks of the wave pattern of the heat exchange plates and cross run relative to the main flow direction. Crossing the wave pattern at an obtuse angle with respect to the main flow direction makes the heat transfer more efficient than at the acute crossing angle.
- DE 69192755 T2 proposes therefore heat exchange plates with corrugated to the main flow direction in different angles zones, that the flow resistance gradually decreases from one to the other side of the flow channel and the heat transfer surface is used as effectively as possible.
- DE 19959780 B1 describes plate heat exchangers consisting of identical heat exchanger plates stacked one above the other rotated by 180 ° and having wave patterns of wave crests and wave troughs inclined obliquely over the entire plate surface in a herringbone pattern.
- the wave crests intersect in the flow channels formed between the heat exchange plates and are based on each other at the intersection points.
- the use of such a plate heat exchanger as an evaporator in refrigeration is problematic in that the flow channels are not uniformly supplied with the refrigerant and the refrigerant is not completely evaporated in the more heavily acted flow channels.
- the non-vaporized refrigerant droplets entrained by the refrigerant vapor are not re-evaporated in the vapor tube superheated in other flow channels in the collecting tube adjoining the plate evaporator itself.
- the invention has the object of providing a plate heat exchanger of the type mentioned in such a way that its efficient use is guaranteed as Plattenverd steamer.
- the basic idea of the invention in the case of a plate heat exchanger of the type mentioned above for evaporating a liquid, in particular a refrigerant, is that in the plate gap forming a flow channel between two adjacent heat transfer plates, at least one area consists of a plurality of juxtaposed, longitudinally
- the swirl tube channels are formed by straight waves parallel to one another in the same direction, ie in the longitudinal direction or at an acute angle to the longitudinal direction of the rectangular plate heat exchanger, on the adjoining sides of the heat exchanger plates.
- the wave field of intersecting waves lying upstream and downstream of the swirl tube channel region ensures, on the one hand, uniform mixing and
- a plurality of short wave regions of intersecting waves and swirl tube channels are formed alternately over the length of the flow channel present between two heat transfer plates. At the beginning and end or at the inlet and the outlet side of the flow channel, a region of intersecting, herringbone aligned waves is provided. In a further embodiment of the invention, the region of the adjacent swirl tube channels extends over the entire width of the flow channel.
- the intersecting waves are at an angle of 60 to 130 ° in one and the same angular position to the flow direction, but in the two halves of the respective heat transfer plate in the opposite direction, so that the oblique waves of each order Turn the heat transfer plates, stacked 180 °, one above the other.
- the oblique waves and the straight waves of a heat transfer plate extending in the flow direction or at an acute angle to the flow direction merge into one another. Between two straight waves of the heat transfer plate in each case a parallel to this separate, straight wave piece is formed.
- the longitudinally contacting each other straight shafts and shaft pieces of adjacent, rotated by 180 ° to each other heat transfer plates form the swirl tube channels.
- the straight shafts and shaft pieces and the oblique waves have a traction pezförmige cross-sectional shape, so that the swirl tube channels have a nearly round, hexagonal cross-section.
- Fig. 1 is a plan view of a heat transfer plate
- Fig. 2 shows a plurality of superimposed, but shown in an exploded position heat transfer plates of a plate evaporator, explained in more detail.
- the identically formed rectangular heat transfer plates 1.1, 1.2 comprise a circumferential raised edge 2, openings 3 provided in the four corner regions and a wave field formed between the openings 3 of approximately trapezoidal shaped waves (wave crests and wave troughs).
- the first openings 3.1 provided on the left-hand longitudinal side are located at a level of the wave peaks at the upper plate level 4, while the second openings 3.2 on the left-hand longitudinal side are at a lower level Plate level 5 are located.
- the heat transfer plates 1.1, 1.2 are each stacked rotated by 180 °, so that the between two adjacent heat transfer plates 1.1, 1.2 formed flow channel between the upper and lower plate level 4, 5 an inlet opening 6 for a liquid to be evaporated (refrigerant) and having an outlet opening 7 for the steam generated in the flow channel.
- the evaporation takes place in the hot
- the heat transfer plates 1.1, 1.2 are soldered to each other at the raised edges 2, at the mutual contact points of the waves of adjacent heat transfer plates and at the adjoining the apertures contact surfaces between the upper and lower plate levels.
- An essential feature of the plate heat exchanger used as an evaporator is the design of the wave field of the heat transfer plates 1.
- a first shaft portion 8 from each other at an obtuse angle to running - oblique - waves 8a provided on the two narrow sides of the heat transfer plates 1.1, 1.2. They are followed in alternation second - straight - shaft portions 9 in the flow direction (longitudinal ⁇ direction of heat transfer plates) extending - straight - shafts 9a and shaft pieces 9b and third shaft portions 10 having an obtuse angle obliquely to the flow direction (longitudinal direction of the plates) extending shafts 10a.
- the straight waves 9a and the oblique waves 10a merge into each other.
- the short, straight shaft pieces 9b extend individually between the straight shafts 9a.
- the oblique waves 10a extend at the same angle but in the opposite direction, and the straight shafts 9a and the straight shaft pieces 9b are offset in the two plate halves by a wave width.
- the cross-sectional area of the straight shafts 9a, 9b and the oblique shafts 10a is trapezoidal.
- the oblique waves 8a of the first wave regions 8 and the oblique waves 10a of the third wave regions 10 intersect and are soldered together at the crossing points.
- the flow channels for the fluid to be vaporized and its already vaporized part in the longitudinal direction of the flow channel are present in the second flow zone 9 of the heat transfer plates 1.1, 1.2 extending - here in cross-section hexagonal, over the width of the flow channel adjacent to each other - swirl tube channels 11 are formed.
- existing alternating flow channel sections are alternately from intersecting waves (wave areas 8, 10) and from adjacent swirl tube channels (wave areas 9).
- the flowing in the flow channel between two heat transfer plates from an inlet opening 6 to an outlet opening 7 fluid is well mixed by the wave areas 8, 10 of intersecting waves and distributed to the rotary tube channels receives in each case in the caused by the intersecting waves tangential introduction into the swirl tube channels a swirl pulse. Due to the thus caused in the swirl tube rotating flow (three to ten revolutions) in the fluid after evaporation still remaining liquid droplets due to the centrifugal force to the outside, that is to the wall of the swirl tube 11 and to the hot surfaces of the heat transfer plates 1.1, 1.2 thrown in order to absorb there the heat required for their evaporation. In addition, the flow path of the medium is lengthened by the swirl tube channels and the rotating movement of the medium, without, however, prolonging the plate heat exchanger itself and thereby accepting structural disadvantages and higher pressure losses. In the known uneven
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)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE201010036654 DE102010036654A1 (de) | 2010-07-27 | 2010-07-27 | Plattenwärmeübertrager zum Verdampfen einer Flüssigkeit |
| PCT/DE2011/075175 WO2012031589A1 (de) | 2010-07-27 | 2011-07-25 | Plattenwärmeübertrager zum verdampfen einer flüssigkeit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP2598820A1 true EP2598820A1 (de) | 2013-06-05 |
| EP2598820B1 EP2598820B1 (de) | 2015-11-18 |
Family
ID=44658509
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP11758372.4A Active EP2598820B1 (de) | 2010-07-27 | 2011-07-25 | Plattenwärmeübertrager zum verdampfen einer flüssigkeit |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP2598820B1 (de) |
| DE (1) | DE102010036654A1 (de) |
| WO (1) | WO2012031589A1 (de) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US12141508B2 (en) | 2020-03-16 | 2024-11-12 | Washington University | Systems and methods for forming micropillar array |
| CN114076543A (zh) * | 2020-08-11 | 2022-02-22 | 山东艾普特暖通技术有限公司 | 六v形波纹高效传热板片及板式类换热器 |
| CN112335816A (zh) * | 2020-12-15 | 2021-02-09 | 石屏县帅虹豆制品有限公司 | 生豆浆热交换快速煮浆法 |
| CN115523141B (zh) * | 2022-09-22 | 2025-02-25 | 中国轻工业长沙工程有限公司 | 涡流管蒸汽再压缩装置 |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1183183A (en) * | 1966-07-08 | 1970-03-04 | Apv Co Ltd | Improvements in or relating to Plate Heat Exchangers |
| GB1288887A (de) * | 1970-01-26 | 1972-09-13 | ||
| DE2616816C3 (de) * | 1976-04-15 | 1983-12-01 | Apparatebau Rothemühle Brandt + Kritzler GmbH, 5963 Wenden | Heizblechpaket für regenerative Wärmetauscher |
| DE3721132C2 (de) | 1987-06-26 | 1995-11-30 | Gea Ahlborn Gmbh & Co Kg | Mehrstufige Plattenverdampferanlage mit in Reihe geschalteten Stufen |
| SE466171B (sv) | 1990-05-08 | 1992-01-07 | Alfa Laval Thermal Ab | Plattfoeraangare daer aatminstone den ena plattan i en foeraangningspassage aer uppdelad i faelt anordnade bredvid varandra mellan plattans laangsidor, vilka faelt uppvisar sinsemellan olika korrugeringsmoenster saa att stroemningsmotstaandet successivt minskar fraan ena sidan till den andra |
| JP3651938B2 (ja) * | 1994-10-24 | 2005-05-25 | 松下エコシステムズ株式会社 | 熱交換素子 |
| JPH10325691A (ja) * | 1997-05-27 | 1998-12-08 | Ishikawajima Harima Heavy Ind Co Ltd | 熱交換器 |
| DE19959780B4 (de) | 1999-04-12 | 2004-11-25 | Rehberg, Peter, Dipl.-Ing. | Plattenwärmeübertrager |
| DE29916493U1 (de) * | 1999-09-14 | 2000-04-06 | FPL Wärmerückgewinnung-Lüftung GmbH, 38889 Blankenburg | Vorrichtung für den Wärmetausch im Kreuzstromprinzip |
| DE202005009948U1 (de) * | 2005-06-23 | 2006-11-16 | Autokühler GmbH & Co. KG | Wärmeaustauschelement und damit hergestellter Wärmeaustauscher |
-
2010
- 2010-07-27 DE DE201010036654 patent/DE102010036654A1/de not_active Ceased
-
2011
- 2011-07-25 WO PCT/DE2011/075175 patent/WO2012031589A1/de not_active Ceased
- 2011-07-25 EP EP11758372.4A patent/EP2598820B1/de active Active
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2012031589A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| DE102010036654A1 (de) | 2012-03-29 |
| WO2012031589A1 (de) | 2012-03-15 |
| EP2598820B1 (de) | 2015-11-18 |
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