DE702960C - Air heater - Google Patents

Air heater

Info

Publication number
DE702960C
DE702960C DE1937L0092986 DEL0092986D DE702960C DE 702960 C DE702960 C DE 702960C DE 1937L0092986 DE1937L0092986 DE 1937L0092986 DE L0092986 D DEL0092986 D DE L0092986D DE 702960 C DE702960 C DE 702960C
Authority
DE
Germany
Prior art keywords
elements
air heater
channels
cooling water
heater according
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
Application number
DE1937L0092986
Other languages
German (de)
Inventor
Dipl-Ing Heinrich Chr Truelsen
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.)
J & P Kleinewefers
Original Assignee
J & P Kleinewefers
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 J & P Kleinewefers filed Critical J & P Kleinewefers
Priority to DE1937L0092986 priority Critical patent/DE702960C/en
Application granted granted Critical
Publication of DE702960C publication Critical patent/DE702960C/en
Expired legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23MCASINGS, LININGS, WALLS OR DOORS SPECIALLY ADAPTED FOR COMBUSTION CHAMBERS, e.g. FIREBRIDGES; DEVICES FOR DEFLECTING AIR, FLAMES OR COMBUSTION PRODUCTS IN COMBUSTION CHAMBERS; SAFETY ARRANGEMENTS SPECIALLY ADAPTED FOR COMBUSTION APPARATUS; DETAILS OF COMBUSTION CHAMBERS, NOT OTHERWISE PROVIDED FOR
    • F23M20/00Details of combustion chambers, not otherwise provided for, e.g. means for storing heat from flames

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Resistance Heating (AREA)

Description

Lufterhitzer Den Gegenstand der Erfindung bildet ein Lufterhitzer, dessen batterieartig zusammen-Z, ,gesetzte Elemente aus Leichtmetall bestehen. Solche aus Aluminium oder Aluminiumlegierungen hergestellten Elernente haben den Nachteil, daß sie schon bei praktisch vorkommenden Temperaturen der Heizgase von 57o bis 65o"C schmelzen. Wenn die Schmelzpunkttemperaturen nicht ganz erreicht werden, werden die Elemente ürweicht und u.U. verformt, undicht und unbrauchbar.Air heater The subject of the invention is an air heater, whose battery-like elements are composed of light metal. Such Elements made of aluminum or aluminum alloys have the disadvantage that they are already at practically occurring temperatures of the heating gases of 57o to 65o "C melt. If the melting point temperatures are not quite reached, then the elements soften and possibly deformed, leaky and unusable.

Um diesen Nachteil zu verhüten, sind ge- mäß der Erfindun- die Elemente, die den hohen Temperaturen der Heizgase ausgesetzt sind, mit Kanälen zum Durchleiten von Kühlwasser versehen. Solche Kanäle sind zur Kühlung stählerner Rußbläserrohre bereits bekannt.To prevent this drawback, the inventions are ACCORDING the elements that are exposed to the high temperatures of the hot gases, provided with channels for the passage of cooling water. Such channels are already known for cooling steel sootblower pipes.

Um die Temperatur der Luft nicht allzusehr nach oben zu begrenzen, weiden die Kanäle zweckmäßig in den Kopf- und Fußenden der Elemente in deren Längsri chtung angeordnet und mit eingegossenen Stahlrohren versehen. Da sich die m it den Wasserkanälen versehenen Elemente auch zum Vorwärmen von Kesselspeisewasser o. dgl. verwenden lassen, erfüllt ein so ausgebildeter Lufterhitzer gleichzeitig auch die Aufgabe eines Speisewasservorwärmers.In order not to limit the temperature of the air too much, The channels graze expediently in the head and foot ends of the elements in their longitudinal ri arranged and provided with cast steel pipes. Since the with the Elements provided with water channels also for preheating boiler feed water or the like. can be used, an air heater designed in this way also fulfills the Task of a feed water preheater.

Auf der Zeichnung ist der Gegenstand der Erfindung beispielsweise dargestellt, und zwar zeigt: Abb. i die Seitenansicht eines aus sechs Elementreihen bestellenden Lufterhitzers, Abb. 2 den Schnitt eines gemäß der Erfindun- aus--ebildeten Elementes nach Linie A-B der Abb. i und Abb. 3 vergleichsweise den Schnitt eines bekannten Lufterhitzerelementes. In dem dargestellten Beispiel treffen die Heizgase in Richtung des Pfeiles 1 (Abb. i) auf den Lufterhitzer, so daß die untersten Elementreihen, beispielsweise a und b, Temperaturen ausgesetzt sind, die das Metall zu erweichen oder zu schmelzen vermögen. Aus diesem Grunde sind die Elemente der beiden untersten Reihen am Kopf- und Fußende mit Kühlwasserkanälen c und d versehen, die in der Längsrichtung der Elemente verlaufen. Nach Abb. 2 sind die Kanäle aus eingegosseneu Rohren e, f gebildet, die an die Speisewasserführung von Kesseln o. dgl. als Vorwarmer angeschlossen werden. Dagegen sind Z, ZD die Elemente der Reiben g, h, i, k in gewöhnlicher Weise nach Abb. 3 ausgebildet.The subject matter of the invention is shown in the drawing, for example, namely: Fig. 1 shows the side view of an air heater made up of six rows of elements, Fig. 3 compares the section of a known air heater element. In the example shown, the heating gases hit the air heater in the direction of arrow 1 (Fig. I), so that the lowest rows of elements, for example a and b, are exposed to temperatures that can soften or melt the metal. For this reason, the elements of the two lowest rows are provided with cooling water channels c and d at the head and foot end, which run in the longitudinal direction of the elements. According to Fig. 2, the channels are formed from cast pipes e, f, which are connected to the feed water supply of boilers or the like as a preheater. In contrast, Z, ZD, the elements of the graters g, h, i, k are designed in the usual way as shown in Fig. 3 .

Claims (2)

PATENTANSPRÜCHE: i. Lufterhitzer, dessen batterieartig zusaminengesetzte Eleinent#e aus Leichtmetall bestehen, dadurch gekennzeichnüt, daß die den hoben Temperaturen der Heizgase ausgesetzten Elemente (a, b) mit Kanälen (c, d) zum Durchleiten von Kühlwasser versehen sind. PATENT CLAIMS: i. Air heater, the battery-like assembled elements of which are made of light metal, characterized in that the elements (a, b) exposed to the elevated temperatures of the heating gases are provided with channels (c, d) for the passage of cooling water. 2. Lufterhitzer nach Anspruch i, dadurch gekennzeichnet, daß die Kühlwasserkanäle (c, d) in den Kopf - und Fußenden der Ele mente in deren Längsrichtung angeordnet sind. 3. Lufterhitzer nach Anspruch i und 2, dadurch gekennzeichnet, daß die Kühlwasserkanäle (c,d) aus in die Elemente eingegossenen Rohren (e, 1) gebildet sind. 4. Lufterhitzer nach Anspruch i bis 3, gekennzeichnet durch die Verwendung der gekühlten Elemente als Speisewass-ervorwärmer.2. Air heater according to claim i, characterized in that the cooling water passages (c, d) in the head - elements and foot ends of the Ele are arranged in the longitudinal direction thereof. 3. Air heater according to claim i and 2, characterized in that the cooling water channels (c, d) are formed from tubes (e, 1) cast into the elements. 4. Air heater according to claim i to 3, characterized by the use of the cooled elements as feed water preheater.
DE1937L0092986 1937-07-31 1937-07-31 Air heater Expired DE702960C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE1937L0092986 DE702960C (en) 1937-07-31 1937-07-31 Air heater

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1937L0092986 DE702960C (en) 1937-07-31 1937-07-31 Air heater

Publications (1)

Publication Number Publication Date
DE702960C true DE702960C (en) 1941-02-20

Family

ID=7287593

Family Applications (1)

Application Number Title Priority Date Filing Date
DE1937L0092986 Expired DE702960C (en) 1937-07-31 1937-07-31 Air heater

Country Status (1)

Country Link
DE (1) DE702960C (en)

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