Andreas Stihl Ag Co. Kg

Christine Bähr

Harald Schliemann

Markus Herzog

Marcus Stein

The application sets forth a knapsack or backpack spraying device having a blower unit and a spraying medium container fixed to a carrying frame. The blower unit conveys an air stream through a blower pipe. Spraying medium is fed from the spraying medium container to the air stream. The spraying medium container has a filling opening which is closed by a cover. The cover has a lower edge facing the spraying medium container. The spraying device has a standing position in which it stands on a flat, horizontal standing face and in which the cover is arranged on an upper side of the spraying medium container facing away from the standing face. To reliably avoid contact of the operator with spraying medium, the height of the carrying frame, measured at right angles to the standing face, is at least 80% of the overall height of the spraying device.

Knapsack spraying device

A spray head is provided for a blower tube of a spray apparatus. The blower tube is adapted to conduct a blower air flow to the spray head () in a flow direction (). The spray head includes a supply pipe () for a medium to be sprayed such as a liquid. The spray head also includes an inlet opening for receiving the blower air flow () and an outlet opening through which the blower air flow is discharged from the spray head enriched with the medium. The supply pipe () has an outer feed connection for the medium and a discharge opening () in the interior of the spray head for admixing the medium into the blower air flow (). The discharge opening () defines a plane aligned in the flow direction () and an impediment is disposed at the edge of the discharge opening lying upstream with respect to the flow direction (). The impediment disturbs the blower air flow entering the spray head through the inlet opening before it flows over the discharge opening. In this way, noise excitation is avoided while obtaining a good atomization of the medium.

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Ebersbach/Fils, Germany

Christine Bähr