Household appliance with a sound absorption device

Abstract

A household appliance, particularly a floor treatment appliance, has an appliance housing, a fan arranged in the appliance housing, an outlet opening formed in the appliance housing downstream of the fan, a flow channel connecting the outlet opening to the fan in a flow-conducting manner, and a sound absorption device assigned to the flow channel in order to absorb sound generated by the operation of the household appliance. In order to create a sound absorption device that can be installed into the household appliance in a particularly simple manner, the sound absorption device comprises a plurality of sound-absorbing wall elements and a carrier body that accommodates the wall elements in a reversible manner, wherein a flow path is formed within the carrier body between opposing wall elements.

What is claimed is: 
     
         1 . A household appliance comprising:
 an appliance housing,   a fan arranged in the appliance housing,   an outlet opening formed in the appliance housing downstream of the fan,   a flow channel connecting the outlet opening to the fan in a flow-conducting manner, and   a sound absorption device assigned to the flow channel in order to absorb sound generated by the operation of the household appliance,   wherein the sound absorption device comprises a plurality of sound-absorbing wall elements and a carrier body that accommodates the wall elements in a reversible manner,   wherein the wall elements are connected to the carrier body such that they can be removed without being destroyed, and   wherein a flow path is formed within the carrier body between opposing wall elements.   
     
     
         2 . The household appliance according to  claim 1 , wherein the carrier body and the wall elements jointly form at least a section of the flow channel. 
     
     
         3 . The household appliance according to  claim 1 , wherein the wall elements have a wall surface that is curved in a direction of a longitudinal extent of the flow channel, and wherein the wall elements are positioned relative to one another by means of the carrier body in such a way that the flow path extends in a curved manner. 
     
     
         4 . The household appliance according to  claim 1 , wherein the flow path is designed in an s-shaped manner such that the flow channel has at least two direction reversals. 
     
     
         5 . The household appliance according to  claim 1 , wherein the flow path has a constant flow cross section. 
     
     
         6 . The household appliance according to  claim 1 , wherein the carrier body has a carrier body wall at least in a section of the carrier body, and wherein the carrier body wall and the wall elements inserted into the carrier body form a flow channel section that is closed outward in an airtight manner and connected to the fan and to the outlet opening of the appliance housing in an air-sealing manner. 
     
     
         7 . The household appliance according to  claim 1 , wherein the wall elements are made of an open-pored foam. 
     
     
         8 . The household appliance according to  claim 1 , wherein the wall elements have a wall thickness (d) that corresponds to at least one-fourth of a wavelength of a sound portion to be absorbed. 
     
     
         9 . The household appliance according to  claim 1 , wherein the wall elements have a wall that produces an airtight seal on their outwardly directed outer side facing away from a conducted air flow. 
     
     
         10 . The household appliance according to  claim 1 , wherein the flow channel has a sound reduction wall, wherein a wall plane of the sound reduction wall is oriented parallel to the flow path, and wherein the sound reduction wall is arranged centrally between opposing wall surfaces of the flow channel in a direction extending orthogonal to the longitudinal extent of the flow channel. 
     
     
         11 . The household appliance according to  claim 1 , wherein the household appliance is a floor treatment appliance.