DE1501653A1 - Air preheater - Google Patents
Air preheaterInfo
- Publication number
- DE1501653A1 DE1501653A1 DE19661501653 DE1501653A DE1501653A1 DE 1501653 A1 DE1501653 A1 DE 1501653A1 DE 19661501653 DE19661501653 DE 19661501653 DE 1501653 A DE1501653 A DE 1501653A DE 1501653 A1 DE1501653 A1 DE 1501653A1
- Authority
- DE
- Germany
- Prior art keywords
- air preheater
- air
- preheater
- sheet metal
- beads
- 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.)
- Pending
Links
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
- 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
-
- 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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F2240/00—Spacing means
Description
"Luftvorwärmer" Die Erfindung betrifft einen Luftvorwärmer aus Stahlblechen. Es ist insbesondere Im Dampfkesselbau hekannt, zur Vorwärmunff von Luft. innerhalb der Kesselzitre aus Blechplatten gebildete Luftvorwärmer einzusetzen, die jedoch wegen der bis- her erforderlichen einzuschweißenden Distanzbleche zur Einhaltung der Blechabstände sehr umstiindlich und teuer zu fertigen sind. Es Ist auch bekannt, Röhren-Luftvorwärmer In die Kesselzlige einzusetzen, jedoch ist bei dieser Art von Vorwärmern der Druckverlust, erheblich höher."Air Preheater" The invention relates to an air preheater made from sheet steel. It is especially known in steam boiler construction to preheat air. use within the Kesselzitre of sheet metal plates air preheater formed, but they must be finished very umstiindlich and expensive because of the bis ago required einzuschweißenden shims to adhere to the plate spacing. It is also known to use tubular air preheaters in the boiler rooms, but with this type of preheater the pressure loss is considerably higher.
Bekannt ist, auch die Anordnung von Regenerativ-Luftvorwärmern hinter dem Kesselaggregat, insbesondere der sogenannte Ljungström-Luftvorwärmer. Diese etöhen gesondert zum Kessel und benötigen einen eigenen Antrieb.The arrangement of regenerative air preheaters behind is also known the boiler unit, especially the so-called Ljungström air preheater. These They are separate from the boiler and require their own drive.
Aufgabe der Erfindung ist es, einen innerhalb der KenselzUge unterzubringenden Luftvorwärmer zu schaffen, der wIrtschaftlicher hergestellt werden kann als die erwähnten Luftvorwäriner. Diese Aufgabe wird dadurch gelöst, daß der Luftvorwärmer aus Blechen gebildet wird, in die Sicken eingewalzt sind,_die einmal zur Distanzierung der Bleche untereinander dienen, zum anderen durch die durch sie verursachte Verwirbelung der wXrmetauschenden Medien den Wärmellbergang verbessern. Durch diese Konstruktion'wird gepenüber der bisherigen r#kuperativen Bauart die erforderliche Heizfläche um etwa 10 bis 30 % verringert, das Gewicht um ca 50 bis 70 %, der erforderliebe Einbauraum-um mindestens 50 %. Ferner können die UnterstlItzung und das Gerüst verringert werden, die Montage ist weniger aufwendig und die Vorwärmertelle können als genormte Elemente.in Blöcken hergestellt und zu dem Gesamt-Vorwärmer am Nfontageort zusammengebaut werden.The object of the invention is to provide an air preheater to be housed within the KenselzUge, the economic may be prepared as mentioned Luftvorwäriner. This object is achieved in that the air preheater is formed from metal sheets into which beads are rolled, which on the one hand serve to distance the metal sheets from one another and, on the other hand, improve the heat transfer through the swirling of the heat exchanging media caused by them. This construction reduces the required heating surface by about 10 to 30% , the weight by about 50 to 70%, and the required installation space by at least 50% compared to the previous r # kuperative design. Furthermore, the support and the scaffolding can be reduced, the assembly is less complex and the preheater points can be produced as standardized elements in blocks and assembled to form the overall preheater at the site.
In den Figuren 1 und 2 ist ein Ausführungsbeispiel der Erfindunt schematisch dargestellt.In Figures 1 and 2, an embodiment of the invention is shown schematically.
Fig. 1 zeigt eine Seitenansicht einer Blechplatte den Luftvorwärmers, Fig. 2 einen Schnitt durch ein Bündel solcher Blechplatten. In Fig. 1 sind beispielsweise In die ea 1,0 zu dicken Bleche 1 mittels einer Walze zueinander versetzt angeordnete, ea 6 mm tiefe und 60 bis 70 mm lanre Sicken 2 eingewalzt.Fig. 1 shows a side view of a sheet metal plate of the air preheater, Fig. 2 shows a section through a bundle of such sheet metal plates. In Fig. 1 , for example, in the ea 1.0 thick sheets 1 arranged offset from one another by means of a roller, ea 6 mm deep and 60 to 70 mm long beads 2 are rolled.
Die Sickentiefe von hier z.B. 6 mm stellt gleichzeitig den Abstand der Bleche untereinander und damit die Spaltbreite für die wärmetauschenden Medien dar. Hierdurch entsteht in Wechsel jeweils eine Gaskammer 3 und eine Luftkammer 4. Die Sicken sind In Strömungsrichtung der w11irmetauschenden Medien angebracht, stehen also von Blech zu Blech quer zueinander. Durch die Sicken 2 werden die Nfengenströme ständig verwirbelt.The bead depth of here, for example 6 mm, simultaneously represents the distance between the sheets and thus the gap width for the heat-exchanging media. This creates a gas chamber 3 and an air chamber 4 in alternation Sheet to sheet at right angles to each other. The corrugations 2 cause the Nfengenströmme to be constantly swirled.
Die Aufgabe der versetzt angebrachten Sicken .2 als DistanzstUcke ist aus Fig. 2 zu entnehmen, aus der auch die Anbringung derartiger Sicken an der Rilckwand der luftfUhrenden Kammern 4 zu erkennen ist.The object of the offset attached beads .2 as distance pieces is shown in Fig. 2 below, can be seen from the attachment of such beads on the Rilckwand the air leading chambers 4.
Claims (1)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEST026171 | 1966-11-29 |
Publications (1)
Publication Number | Publication Date |
---|---|
DE1501653A1 true DE1501653A1 (en) | 1969-11-06 |
Family
ID=7460881
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19661501653 Pending DE1501653A1 (en) | 1966-11-29 | 1966-11-29 | Air preheater |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE1501653A1 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0625688A1 (en) * | 1993-05-18 | 1994-11-23 | SGL Technic | Plate heat exchanger |
DE4343399A1 (en) * | 1993-12-18 | 1995-06-22 | Balcke Duerr Ag | Plate heat exchanger |
EP1172624A3 (en) * | 2000-07-14 | 2002-01-23 | Balcke-Dürr Energietechnik GmbH | Plate-like heat exchanger |
EP1085285A3 (en) * | 1999-09-16 | 2002-05-08 | Balcke-Dürr Energietechnik GmbH | Plate-like heat exchanger and evaporator |
-
1966
- 1966-11-29 DE DE19661501653 patent/DE1501653A1/en active Pending
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0625688A1 (en) * | 1993-05-18 | 1994-11-23 | SGL Technic | Plate heat exchanger |
FR2705445A1 (en) * | 1993-05-18 | 1994-11-25 | Vicarb Sa | Plate heat exchanger. |
US5544703A (en) * | 1993-05-18 | 1996-08-13 | Vicarb | Plate heat exchanger |
DE4343399A1 (en) * | 1993-12-18 | 1995-06-22 | Balcke Duerr Ag | Plate heat exchanger |
EP1085285A3 (en) * | 1999-09-16 | 2002-05-08 | Balcke-Dürr Energietechnik GmbH | Plate-like heat exchanger and evaporator |
EP1172624A3 (en) * | 2000-07-14 | 2002-01-23 | Balcke-Dürr Energietechnik GmbH | Plate-like heat exchanger |
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