Cleaning shoe venting through chopper rotor assembly

US10390491B2 · kind B2 · utility

Assignee

• Deere & Company · US

Inventors

• Martin Rittershofer · East Moline, US
• Gregor Diessner · Schweigen-Rechtenbach, DE
• Oliver Klein · Saarlouis, DE
• Peter Mischler · Rockton, US
• Volker Fuchs · Saarburg, DE
• Corwin M. Puryk · East Moline, US

Key dates

• Filing date: Jun 13, 2017
• Grant date: Aug 27, 2019
• Expiry date: Jul 1, 2037

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A01F12/444
• WIPO field: Other special machines
• WIPO sector: Mechanical engineering

Abstract

A combine harvester includes a housing having a rear hood and defining an interior, a blower for generating an air stream in a substantially rearward direction, and a cleaning system separating residue from a crop material such that the residue is transported via the air stream rearwardly to be discharged from the housing. A chopper rotor assembly is disposed within the interior below the rear hood and includes a chopper rotor having a plurality of blades for chopping the residue as it is received via the air stream. A chopper housing is disposed within the interior and includes a roof structure located above the chopper rotor such that a minimal gap is defined therebetween. The air stream flows out of the interior via a flow path defined through the chopper rotor without being substantially redirected from flowing in the rearward direction by the plurality of blades of the chopper rotor.