EP0522360B1 - Heizblechpaket für regenerative Wärmetauscher sowie Verfahren und Vorrichtung zur Herstellung von Profilblechen für solche Heizblechpakete - Google Patents

Heizblechpaket für regenerative Wärmetauscher sowie Verfahren und Vorrichtung zur Herstellung von Profilblechen für solche Heizblechpakete Download PDF

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Publication number
EP0522360B1
EP0522360B1 EP92110722A EP92110722A EP0522360B1 EP 0522360 B1 EP0522360 B1 EP 0522360B1 EP 92110722 A EP92110722 A EP 92110722A EP 92110722 A EP92110722 A EP 92110722A EP 0522360 B1 EP0522360 B1 EP 0522360B1
Authority
EP
European Patent Office
Prior art keywords
plates
profiling
pack
edge
sheets
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.)
Expired - Lifetime
Application number
EP92110722A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0522360A3 (en
EP0522360A2 (de
Inventor
Simon Kaastra
Gerd Dipl.-Ing. Köster
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Apparatebau Rothemuehle Brandt and Kritzler GmbH
Original Assignee
Apparatebau Rothemuehle Brandt and Kritzler GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Apparatebau Rothemuehle Brandt and Kritzler GmbH filed Critical Apparatebau Rothemuehle Brandt and Kritzler GmbH
Publication of EP0522360A2 publication Critical patent/EP0522360A2/de
Publication of EP0522360A3 publication Critical patent/EP0522360A3/de
Application granted granted Critical
Publication of EP0522360B1 publication Critical patent/EP0522360B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • F28D19/00—Regenerative heat-exchange apparatus in which the intermediate heat-transfer medium or body is moved successively into contact with each heat-exchange medium
    • F28D19/04—Regenerative heat-exchange apparatus in which the intermediate heat-transfer medium or body is moved successively into contact with each heat-exchange medium using rigid bodies, e.g. mounted on a movable carrier
    • F28D19/041—Regenerative heat-exchange apparatus in which the intermediate heat-transfer medium or body is moved successively into contact with each heat-exchange medium using rigid bodies, e.g. mounted on a movable carrier with axial flow through the intermediate heat-transfer medium
    • F28D19/042—Rotors; Assemblies of heat absorbing masses
    • F28D19/044—Rotors; Assemblies of heat absorbing masses shaped in sector form, e.g. with baskets
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/4935—Heat exchanger or boiler making
    • Y10T29/49357—Regenerator or recuperator making

Definitions

  • the invention relates to a heating plate package for regenerative heat exchangers, which consists of a plurality of superimposed, flow channels between themselves and at least partially profiled, e.g. there are sheets provided with embossings which have a coating serving as surface protection, for example an enamel layer.
  • the invention also relates to a method and a device for producing such profiled sheets for heating plate packages provided with a surface coating.
  • Heating plate packs made of sheets with a coating serving as surface protection, especially enamelling, are always used in regenerative heat exchangers if, despite the risk of corrosion, they should have a sufficiently long service life and / or if the heating surfaces must be kept clean to reduce the risk of fire.
  • the invention aims to overcome the disadvantages that arise when packaging the known profiled sheets into a heating sheet package. Therefore, the task for the solution is to prevent damage to the surface protection coating on the edge edges of the profiled sheets and therefore also to avoid partial corrosion risk on the profiled sheets of the heating sheet packages.
  • the object of the invention is therefore fundamentally characterized in that at least the edge edges of the metal sheets lying directly adjacent to one another run at a minimum distance from one another at all points or are aligned without contact with one another. For this purpose, it is only necessary to provide all or a certain proportion of the sheets at their marginal edges with a flatter profile or profile than over their remaining surface areas.
  • the invention further provides that the minimum distance between the edge edges of the sheets is greater than the normal coating thickness and also greater than the coating thickness on the side faces of the edge edges facing each other. Touch voltages between the bead-like thickened edge edge coatings are avoided in any case and without any additional effort when assembling the heating plate packs.
  • the profiling height of the sheets is reduced at least in the area of their peripheral edges compared to the profiling height of their other surface areas. This can be done in that two directly adjacent one another Only one sheet has a profiled edge at a time, while the edge of the other sheet runs straight. However, it is also possible to provide one of two parallel edge edges of a sheet with a profile, while the other runs straight, and in this case to arrange the sheets lying directly adjacent to one another in their plane rotated by 180 ° relative to one another.
  • edge edges of the sheets which have the minimum spacing from one another are expediently provided within the heating sheet stack in such a way that they face the leading and trailing edges of the heat exchanger, i.e. with their bulge-like thickened surface coating, they run transversely to the direction of impact of the - aggressive - media acting on the heat exchanger.
  • the process according to the invention for the production of profiled sheets for heating sheet packets by rolling, pressing or embossing is essentially characterized in that other deformation forces are exerted on the zones of the sheets running along the edge edges in the sense of a flattening or tapering of the profile than on their remaining surface area. These other deformation forces can be generated at the same time as the actual profiling of the sheets.
  • the edge edge processing of the sheets takes place here simultaneously with the production of their actual profiling.
  • the zones of the metal sheets running along the peripheral edges can be re-rolled, pressed or embossed in order to maintain the profile flattening or tapering there.
  • a device for practicing the type of method consists of two profiling tool halves which can be brought into action from opposite sides on the flat sheet metal. It is characterized in that the areas of the profiling tool halves assigned to the edge edges of the metal sheets enclose between them a step-shaped offset or converging shaping profile.
  • Roller pairs or pairs of pressure plates or embossing plates with end sections or edge zones that are at least slightly inclined or stepped in relation to their main working plane can be used as profiling tool halves.
  • the rollers are provided at their ends with annular, smooth roller sections.
  • a device for practicing the method with which the zones of the sheets running along the edge edges can be re-rolled, pressed or embossed in the sense of a profile flattening is characterized by two post-mold halves which can be brought into action from opposite sides on the already profiled sheet narrow edge areas adjoining the edge edges of the sheets.
  • pairs of rollers or pairs of pressure plates or embossing plates with weakly inclined and profiled or offset and smooth and shaping surfaces can be used as postforming tool halves.
  • a pair of postforming rollers is used, its rollers are designed as folding rollers.
  • FIG. 1 of the drawing a cutout area from a heating plate stack 1 is shown, which is formed by a plurality of plates 2 lying directly or stacked one on top of the other, which are arranged, for example, alternately one above the other in two groups 2a and 2b.
  • At least the sheets 2 of group 2a, but preferably the sheets 2 of both groups 2a and 2b are profiled 3, z. B. in the form of features, as can be clearly seen in the sheets 2 of group 2a in Figure 1 of the drawing.
  • the individual profiles 3 have the form of irregular wavy lines on the sheets 2 of group 2a, which, however, do not only extend in the transverse direction of the sheets, as can be seen in FIG. 1, but also extend in the longitudinal direction of the sheet.
  • profilings 3 or forms, which run in the manner of irregular wavy lines, are of course molded into the individual sheets 2 in repeated repetition, as can also be seen in FIG. 1 of the drawing.
  • All of the sheets 2 in the heating sheet stack assigned to groups 2a and 2b are equipped with a coating 5 serving as surface protection, in particular an enamel layer 5, as shown in FIG. 3 of the drawing.
  • their profiles 3, which are produced, for example, as shapes, are designed such that at least the edge edges 6 of the sheets 2 of the two groups lying adjacent or directly stacked on top of one another at all points run at a minimum distance 8 from one another or are aligned without contact with one another, as can be seen both from FIG. 1 and from FIG. 2 of the drawing.
  • the minimum distance 8 between the edge edges 6 of the sheets 2 of adjacent groups 2a and 2b should in any case be larger than the thickness of the coating 5 in the region of the bead-like thickening formed by the material accumulation 7.
  • the conditions for maintaining the minimum distance 8 between the edge edges 6 of sheets 2 lying directly on top of one another can be met by at least one of them not being provided with a profile 3 over an edge strip of appropriate width, but rather being kept completely level, as is the case which is shown in Figures 1 and 2 of the drawing on the sheets 2 of group 2b.
  • FIGS. 1 and 2 of the drawing for a heating plate stack 1 can in turn be achieved by only one of two plates 2 lying directly adjacent to one another having a profiled edge 6, as shown by the plates of group 2a in FIG. 1, while the edge 6 of the other sheet 2 runs straight, as can be seen there from the group 2b.
  • Sheets 2 which have at least one or less of their profile along one of their peripheral edges 6 than on their entire remaining surface, can be produced by rolling, pressing or embossing, that is to say in various mechanical ways. In this case, 2 other zones are formed on the zones of the metal sheets running along the peripheral edges 6 Deforming forces exerted than on the central area on which the profiles 3 for delimiting the flow channels 4 are located.
  • the shaping in the area of the marginal edges 6 and the production of the profiling 3 can be carried out simultaneously or in one work step by appropriately designing the profiling tools, which can be carried out in the form of pairs of rollers or pairs of pressure plates or embossing plates.
  • a pair of rollers 11, the rollers 12 and 13 of which have a complementary matching profile of their bale circumference, can be seen as a device for producing sheets 2 for the construction of heating plate packages 1.
  • the two rollers 12 and 13 of the pair of rollers 11 have the more or less irregular initial configuration which produces the profile 3 in the form of features, as can be seen from FIG. 5 of the drawing.
  • the two rollers 12 and 13 of the roller pair 11 have shaping surfaces which are stepped against one another and are circular over their circumference, as can be seen from FIG.
  • sheets 2 can be produced in one operation, which are only completely flat along an edge 6 parallel to the direction of passage, while their remaining surface area with the more or less irregular profile 3 in the form of features.
  • sheets 2 can be produced in one continuous operation, for example by processing strip material, by using pairs of rollers explained with reference to FIGS. 4 to 6, prefabricated sheet blanks can be produced in an equivalent manner, but discontinuously, using pairs of pressure plates or embossing plates manufacture with the help of presses.
  • FIGS. 7 to 10 of the drawing options are also indicated that the object on which the invention is based can also be achieved in that the profiling height of the sheets 2 is reduced at least in the area of their peripheral edges 6 compared to the other surface areas.
  • FIG. 7 shows that it is possible to allow the profiling 3 of the sheets 2 to converge on both sides towards their edge edges 6 in order to achieve the desired minimum distance 8 in the region of the edge edges 6.
  • FIG. 8 illustrates that the same possibility can also be achieved if the profiling 3 of the sheets 2 ends on one side converging towards the edge 6.
  • devices for the production of the sheets 2 designed according to FIGS. 7 to 10, devices can be used which consist of two profiling tool halves which can be brought into action from opposite sides on the flat sheet metal.
  • the areas of these profiling tool halves assigned to the edge edges 6 of the sheets 2 must include a converging shaping profile corresponding to FIGS. 7 or 8, taking into account the sheet thickness to be machined in each case.
  • the device can be fitted with pairs of rollers or presses. or pairs of embossing plates, which act on the sheets 2 either only in one work step or in two successive work steps.
  • the heating plate packs 1 are assembled from the sheets 2 of groups 2a and 2b in such a way that the marginal edges 6 of the sheets 2, which have the minimum spacing 8 from one another, are turned towards the upstream and downstream sides of the heat exchanger media and consequently that Material accumulation of the bead-like thickening of its coating 5 comes to rest at locations which are exposed to a particularly high risk of corrosion.

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  • 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)
  • Bending Of Plates, Rods, And Pipes (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)
  • Making Paper Articles (AREA)
  • Domestic Hot-Water Supply Systems And Details Of Heating Systems (AREA)
EP92110722A 1991-07-11 1992-06-25 Heizblechpaket für regenerative Wärmetauscher sowie Verfahren und Vorrichtung zur Herstellung von Profilblechen für solche Heizblechpakete Expired - Lifetime EP0522360B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4122949A DE4122949A1 (de) 1991-07-11 1991-07-11 Heizblechpaket fuer regenerative waermetauscher sowie verfahren und vorrichtung zur herstellung von profilblechen fuer solche heizblechpakete
DE4122949 1991-07-11

Publications (3)

Publication Number Publication Date
EP0522360A2 EP0522360A2 (de) 1993-01-13
EP0522360A3 EP0522360A3 (en) 1993-04-28
EP0522360B1 true EP0522360B1 (de) 1996-02-28

Family

ID=6435903

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92110722A Expired - Lifetime EP0522360B1 (de) 1991-07-11 1992-06-25 Heizblechpaket für regenerative Wärmetauscher sowie Verfahren und Vorrichtung zur Herstellung von Profilblechen für solche Heizblechpakete

Country Status (6)

Country Link
US (1) US5314006A (ja)
EP (1) EP0522360B1 (ja)
JP (1) JPH05231791A (ja)
DE (2) DE4122949A1 (ja)
ES (1) ES2084879T3 (ja)
RU (1) RU2080538C1 (ja)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4316978C2 (de) * 1993-05-21 1996-08-14 Thale Eisen Huettenwerk Beidseitig über einen oder mehrere Ränder emaillierte stab-, platten- oder schalenförmige Bauteile
DE19528634A1 (de) 1995-08-04 1997-02-06 Rothemuehle Brandt Kritzler Heizblechpaket für Regenerativ-Wärmetauscher
US6079481A (en) * 1997-01-23 2000-06-27 Ail Research, Inc Thermal storage system
US5979050A (en) * 1997-06-13 1999-11-09 Abb Air Preheater, Inc. Air preheater heat transfer elements and method of manufacture
FR2771802B1 (fr) 1997-12-02 2000-01-28 Dietrich & Cie De Echangeur de chaleur metallique emaille et sensiblement plat
DE19940627A1 (de) * 1999-08-27 2001-03-01 Abb Patent Gmbh Heizelement für einen Regenerativ-Wärmetauscher und Verfahren zum Herstellen eines Heizelementes
DE10320462B3 (de) * 2003-05-08 2005-03-03 Alstom Power Energy Recovery Gmbh Heizelement für einen Regenerativ-Wärmetauscher und Verfahren zum Herstellen eines Heizelementes
DE102006003317B4 (de) 2006-01-23 2008-10-02 Alstom Technology Ltd. Rohrbündel-Wärmetauscher
US9557119B2 (en) 2009-05-08 2017-01-31 Arvos Inc. Heat transfer sheet for rotary regenerative heat exchanger
US8622115B2 (en) 2009-08-19 2014-01-07 Alstom Technology Ltd Heat transfer element for a rotary regenerative heat exchanger
US9200853B2 (en) 2012-08-23 2015-12-01 Arvos Technology Limited Heat transfer assembly for rotary regenerative preheater
US10175006B2 (en) 2013-11-25 2019-01-08 Arvos Ljungstrom Llc Heat transfer elements for a closed channel rotary regenerative air preheater
US10094626B2 (en) 2015-10-07 2018-10-09 Arvos Ljungstrom Llc Alternating notch configuration for spacing heat transfer sheets
RU2712695C1 (ru) * 2019-01-10 2020-01-30 Акционерное общество "Корпорация "Росхимзащита" Способ изготовления блочного регенеративного продукта

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3262490A (en) * 1954-04-21 1966-07-26 Chrysler Corp Process for joining metallic surfaces and products made thereby
US2983486A (en) * 1958-09-15 1961-05-09 Air Preheater Element arrangement for a regenerative heat exchanger
GB992413A (en) * 1961-05-25 1965-05-19 Howden James & Co Ltd Improvements relating to rotary regenerative air preheaters for boiler plant
US4449573A (en) * 1969-06-16 1984-05-22 Svenska Rotor Maskiner Aktiebolag Regenerative heat exchangers
GB1439674A (en) * 1973-11-24 1976-06-16 Central Electr Generat Board Matrix for regenerative heat exchangers
DE2616816C3 (de) * 1976-04-15 1983-12-01 Apparatebau Rothemühle Brandt + Kritzler GmbH, 5963 Wenden Heizblechpaket für regenerative Wärmetauscher
GB2183811A (en) * 1986-09-12 1987-06-10 Howden James & Co Ltd Rotary regenerative heat exchanger

Also Published As

Publication number Publication date
ES2084879T3 (es) 1996-05-16
EP0522360A3 (en) 1993-04-28
RU2080538C1 (ru) 1997-05-27
US5314006A (en) 1994-05-24
DE59205443D1 (de) 1996-04-04
JPH05231791A (ja) 1993-09-07
DE4122949A1 (de) 1993-01-14
EP0522360A2 (de) 1993-01-13

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