Patent ID: 9737182
Date: 2017-08-22
CPC Classifications: A01G,A47L

Claim:
1. A handheld work apparatus comprising: an electric drive motor; a blower tube; a blower arranged in said blower tube and configured to convey a working air flow through said blower tube in a flow direction; said blower including at least one impeller configured to be rotatably driven about a rotational axis by said drive motor and at least one diffuser fixedly held at a location in said blower tube; said diffuser being arranged downstream of said impeller with respect to said flow direction; said blower tube further having a motor compartment arranged therein; said electric drive motor being arranged in said motor compartment; said blower tube and said motor compartment conjointly defining an annular space therebetween configured to permit said working air flow to flow therethrough; the work apparatus defining an extraction opening for cooling air for said electric drive motor; said extraction opening being arranged downstream of said diffuser; said motor compartment having at least one outflow opening for cooling air arranged upstream of said extraction opening with respect to said flow direction in said blower tube; said annular space being connected to said motor compartment via said extraction opening; said extraction opening and said outflow opening being arranged such that during operation of said work apparatus a first pressure (p