| 摘要 |
A dispenser for discharging an in particular granular or powdery substance by blow-out, has a blow-out duct, and a suction line opening into the blow-out duct for sucking the substance into the blow-out duct. A positive air pressure can be built up in a duct section arranged upstream of the blow-out duct and closed in the direction of the blow-out duct by a valve opening in a pressure-dependent manner, for pressure-controlled formation of a blow-out stream in the blow-out duct. A method for emptying a substance reservoir having a freeze-dried substance sucks the substance out of the substance reservoir, using a suction air stream opening into a blowing stream, and discharges the substance. A sucking/blowing dispenser is used for emptying a substance reservoir having a freeze-dried substance. |
