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DE606817C - Air heater - Google Patents

Air heater

Info

Publication number
DE606817C
DE606817C DENDAT606817D DE606817DD DE606817C DE 606817 C DE606817 C DE 606817C DE NDAT606817 D DENDAT606817 D DE NDAT606817D DE 606817D D DE606817D D DE 606817DD DE 606817 C DE606817 C DE 606817C
Authority
DE
Germany
Prior art keywords
air
housing
heating elements
air heater
heated
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
DENDAT606817D
Other languages
German (de)
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.)
Individual
Original Assignee
Individual
Publication date
Application granted granted Critical
Publication of DE606817C publication Critical patent/DE606817C/en
Expired legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24DDOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D5/00Hot-air central heating systems; Exhaust gas central heating systems

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Direct Air Heating By Heater Or Combustion Gas (AREA)

Description

Lufterhitzer Die Erfindung betrifft einen Lufterhitzer, bei dem die zu erhitzende Luft mittels eines Fördermittels durch ein Gehäuse hindurch an radial oder axial zu der Gehäusewand angeordneten Heizelementen vorbeigeleitet wird, bei Beheizung dieser durch einen strömenden Wärmeträger im Gegenstrom zum Luftstrom. Bei solchen Lufterhitzern ist vielfach die Temperaturdifferenz zwischen den Heizelementen und der Luft amLuftaustrittsende geringer als am Lufteintrittsende, was zur Folge hat, daß der Wärmeübergang am Lufteintrittsende größer ist als am Luftaustrittsende. Um den Wärmeübergang am Luftaustrittsende etwa auf das bleiche Maß wie am Eintrittsende zu steigern, wird die Luftgeschwindigkeit gegenüber der abnehmenden Temperaturdifferenz dadurch stetig erhöht, daß der freie Gehäusequerschnitt in Richtung des Luftstromes stetig abnimmt.Air heater The invention relates to an air heater in which the Air to be heated by means of a conveying means through a housing to radially or bypassing heating elements arranged axially to the housing wall, at These are heated by a flowing heat transfer medium in countercurrent to the airflow. In such air heaters, there is often the temperature difference between the heating elements and the air at the air outlet end is less than at the air inlet end, which results in has that the heat transfer at the air inlet end is greater than at the air outlet end. Around the heat transfer at the air outlet end to about the same level as at the inlet end to increase, the air velocity will be compared to the decreasing temperature difference thereby steadily increasing that the free housing cross-section in the direction of the air flow steadily decreases.

Auf der Zeichnung ist die Erfindung an zwei Ausführungsbeispielen schematisch veranschaulicht, und zwar zeigen: Abb. i einen Lufterhitzer, bei dem die Luft durch das Gehäuse hindurchgedrückt, und Abb. 2 einen solchen, bei dem sie hindurchgesaugt wird, und zwar in beiden Abb. in einem Längsschnitt, Abb. 3 einen senkrechten Schnitt nach Linie A-B der Abb. 2 bei radialer und Abb. 4 nach Linie C-D bei axialer Anordnung der Heizelemente, während die Abb.5 einen Längsschnitt durch die in Abb. 4 veranschaulichte Anordnung darstellt.In the drawing, the invention is based on two exemplary embodiments schematically illustrated, namely show: Fig. i an air heater in which the air is pushed through the housing, and Fig. 2 one in which it is sucked through, in both Fig. In a longitudinal section, Fig. 3 a vertical section according to line A-B of Fig. 2 at radial and Fig. 4 according to line C-D with an axial arrangement of the heating elements, while Fig.5 shows a longitudinal section by the arrangement illustrated in fig.

Es ist d das Gehäuse des Lufterhitzers, in welches das Gebläse b eingebaut ist, das in bekannter Weise seinen Antrieb erhält. Hinter dem Gebläse b sind die Heizelemente c, wie in den Abb. i bis 3 ersichtlich, radial, oder, wie sich aus den Abb.4 und 5 ergibt, axial angeordnet. Diese Heizelemente c bestehen in den gezeichneten Ausführungsbeispielen aus Plattenheizkörpern.It is d the housing of the air heater in which the fan b is installed is that receives its drive in a known manner. Behind the fan b are the Heating elements c, as can be seen in Figs. I to 3, radial, or, as can be seen from the Fig.4 and 5 results, arranged axially. These heating elements c consist of the ones shown Embodiments from panel radiators.

Die Anordnung ist nun so getroffen, daß der freie Gehäusequerschnitt in Richtung des Luftstromes stetig abnimmt, wodurch infolge der Geschwindigkeitssteigerung eine Erhöhung des Wärmeübergangs erreicht wird.The arrangement is now made so that the free cross-section of the housing steadily decreases in the direction of the air flow, which is due to the increase in speed an increase in the heat transfer is achieved.

Zwischen dem Gebläse b und den Heizelementen c ist eine einstellbare Luftlenkvorrichtung d vorgesehen, durch welche die einströmende Luft auf die Heizelemente c gerichtet wird.Between the fan b and the heating elements c is an adjustable one Air deflection device d provided through which the inflowing air on the heating elements c is directed.

Claims (1)

PATENTANSPRUCH: Lufterhitzer, bei dem die zu erhitzende Luft mittels eines Fördermittels durch ein Gehäuse hindurch an radial oder axial zu der Gehäusewand angeordneten Heizelementen vorbeigeleitet wird, bei Beheizung dieser durch einen strömenden Wärmeträger im Gegenstrom zum Luftstrom, dadurch gekennzeichnet, daß der freie Gehäusequerschnitt in Richtung des Luftstromes stetig abnimmt.PATENT CLAIM: Air heater in which the air to be heated by means of a conveying means through a housing on radially or axially to the housing wall arranged heating elements is bypassed, when heated by a flowing heat carrier in countercurrent to the air stream, characterized in that the free cross-section of the housing decreases steadily in the direction of the air flow.
DENDAT606817D Air heater Expired DE606817C (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE606817T

Publications (1)

Publication Number Publication Date
DE606817C true DE606817C (en) 1934-12-11

Family

ID=6575538

Family Applications (1)

Application Number Title Priority Date Filing Date
DENDAT606817D Expired DE606817C (en) Air heater

Country Status (1)

Country Link
DE (1) DE606817C (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE962646C (en) * 1953-07-23 1957-04-25 Rox Lufttechnische Geraetebau Air heater with axial fan
US3313342A (en) * 1962-04-19 1967-04-11 Laing Nikolaus Blowers

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE962646C (en) * 1953-07-23 1957-04-25 Rox Lufttechnische Geraetebau Air heater with axial fan
US3313342A (en) * 1962-04-19 1967-04-11 Laing Nikolaus Blowers

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