Sub-quantity scale having an air nozzle along a conveying channel, and a method of operating a sub-quantity scale

A sub-quantity scale comprising:

• a product feeding device,
• a product distributing device, and
• a plurality of sub-quantity storage containers for transferring sub-quantities of a product to a weighing device, from which the sub-quantities pass into a packaging container,
• vibration conveyor devices, between the product distributing device and the plurality of sub-quantity containers, which feed the product into the sub-quantity storage containers, each of which having a conveying channel and a conveying direction and being assigned to one of the sub-quantity storage containers, and
• a nozzle device for subjecting a conveying surface of the conveying channel to an air flow oriented in the conveying direction, wherein the nozzle device is arranged in a transfer area between the product distributing device and the conveying channel, wherein the nozzle device is arranged below a transfer edge of the product distributing device and is recessed against the conveying direction of the conveying channel with respect to the transfer edge, in order to subject the product to the air flow during free fall from the product distributing device into the conveying channel.