The invention relates to a forced-draft pre-mix burner device (16) comprising: i) a housing (18) that conveys air from an upstream cool air inlet (24) to a downstream warm air outlet (26); ii) a heat exchanger (40) that warms the air prior to discharge via the warm air outlet (26); iii) a gas burner (44) that burns an air-gas mixture to thereby warm the heat exchanger (40); and iv) a fan (28) that mixes the air-gas mixture and forces the air-gas mixture into the gas burner (44). The fan (28) comprises a plurality of blades (34) that rotate around an axis of rotation (35). The fan (28) further comprising an end cap (72) having an end wall (73) that faces the plurality of blades (34), an air-gas mixture inlet (88) through which the air-gas mixture is conveyed to the plurality of blades (34), and an air-gas mixture outlet (90) through which the air-gas mixture is conveyed to the gas burner (44). The air-gas mixture inlet (88) is connected to the air-gas mixture outlet (90) via a channel (98) formed in the end wall (73), wherein the channel (98) forms a depression in the end cap (72) that gradually becomes shallower from the air-gas mixture inlet (88) to the air-gas mixture outlet (90) along its length from the air-gas mixture inlet (88) to the air-gas mixture outlet (90), thus gradually forcing the air-gas mixture axially into an interior (69) and into the compartments formed between the adjacent blades (70).


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    Title :

    FORCED-DRAFT PRE-MIX BURNER DEVICE FOR A VEHICLE HEATER


    Additional title:

    GEBLÄSEVORGEMISCHBRENNERVORRICHTUNG FÜR EIN FAHRZEUGHEIZGERÄT
    DISPOSITIF DE BRÛLEUR DE PRÉMÉLANGE À TIRAGE FORCÉ POUR UN CHAUFFAGE DE VÉHICULE


    Contributors:

    Publication date :

    2021-03-31


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    F23D Brenner , BURNERS / B60H ARRANGEMENTS OR ADAPTATIONS OF HEATING, COOLING, VENTILATING, OR OTHER AIR-TREATING DEVICES SPECIALLY FOR PASSENGER OR GOODS SPACES OF VEHICLES , Anordnung oder Einbau der Heizung, Kühlung, Lüftung oder anderer Luftbehandlungsvorrichtungen für die Fahrzeugräume für Reisende oder Fracht / F23L SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL , Zufuhr von Luft oder nichtbrennbarer Flüssigkeiten oder Gase zu Feuerungen allgemein



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