A controller (5) for controlling a vacuum generator (3) in a vacuum system (10) for transportation of objects, which vacuum system (3) comprises a vacuum generator (3) driven by a compressed air flow via a first on/off valve (1), wherein the vacuum generator (3) via a vacuum chamber (11) being part of the vacuum system (10) is arranged to be brought in flow connection with the vacuum gripper means (6) comprised in the vacuum system (10), in order to supply vacuum to the vacuum gripper means (6) in result of the compressed air flow, wherein the vacuum system (10) comprises a second valve (2) arranged to supply compressed air into the vacuum system (10); a pressure sensor (4) for monitoring (21) a system pressure (P) inside the vacuum chamber (11); and a vacuum system controller (5), wherein the controller (5) is arranged to communicate with the first on/off valve (1), the second valve (2) and the pressure sensor and when the on/off valve (1) is not flowing air to the vacuum generator (3), and the controller (5) indicates a state of no vacuum generation, and if a fluctuation from a pressure-equilibrium to a negative time-derivative of the system-pressure (P) is detected, the controller is arranged to activate the second valve (2), allowing an amount of compressed air to flow into the vacuum-chamber (11) for compensation to re-establish the pressure-equilibrium.


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    Titel :

    CONTROLLING A VACUUM SYSTEM COMPRISING A VACUUM GENERATOR


    Beteiligte:
    WIGREN GUSTAF (Autor:in) / ENGBORG PETER (Autor:in)

    Erscheinungsdatum :

    2017-07-20


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Englisch


    Klassifikation :

    IPC:    B65G TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS , Transport- oder Lagervorrichtungen, z.B. Förderer zum Laden oder Abladen / B66C Krane , CRANES



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