EP 4018898 B1 20230614 - HOUSEHOLD APPLIANCE WITH A FAN AND A FLOW DUCT
Title (en)
HOUSEHOLD APPLIANCE WITH A FAN AND A FLOW DUCT
Title (de)
HAUSHALTSGERÄT MIT EINEM GEBLÄSE UND EINEM STRÖMUNGSKANAL
Title (fr)
APPAREIL ÉLECTROMÉNAGER DOTÉ D'UN VENTILATEUR ET D'UN CANAL D'ÉCOULEMENT
Publication
Application
Priority
DE 102020134579 A 20201222
Abstract (en)
[origin: US2022192446A1] A household appliance has a device housing, a blower arranged in the device housing, an outlet opening formed in the flow direction behind the blower in the device housing, and a flow channel. Soundwaves are generated by the blower, and produce resonances characterized by standing waves, which form between opposing inner walls of the flow channel. A sound reducing wall is positioned in the flow channel, the wall plane of which is oriented parallel to a primary flow direction of the air flow guided in the flow channel. The sound reducing wall is positioned in the flow channel so that a maximum for a fast amplitude of a sound particle velocity of the air flow guided in the flow channel lies in the wall plane of the sound reducing wall. The soundwaves form while interspersing the sound reducing wall between the opposing inner walls of the flow channel.
IPC 8 full level
A47L 9/00 (2006.01)
CPC (source: CN EP US)
A47L 5/24 (2013.01 - US); A47L 9/0081 (2013.01 - CN EP US); G10K 11/162 (2013.01 - US); G10K 11/172 (2013.01 - US)
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
EP 4018898 A1 20220629; EP 4018898 B1 20230614; CN 114652194 A 20220624; DE 102020134579 A1 20220623; ES 2951500 T3 20231023; US 11826008 B2 20231128; US 2022192446 A1 20220623
DOCDB simple family (application)
EP 21214645 A 20211215; CN 202111577675 A 20211222; DE 102020134579 A 20201222; ES 21214645 T 20211215; US 202117553969 A 20211217