Electric vacuum cleaner

Abstract

An electric vacuum cleaner in which it is possible to ensure an increased area of a lower mesh filter 34 while saving space is provided. In a partition wall 26 positioned between a coarse dust air passage 31 through which coarse dust that has been separated in a separating section 16 and passed through an approximately straight cylindrical separating main body part 17 passes with sucked air and a fine dust air passage 32 through which minute dust that has been separated in the separating section 16 and passed through auxiliary openings 18 passes with sucked air, there is formed a communication port 35 for letting the sucked air flowing into the coarse dust air passage 31 outside along the coarse dust air passage 31 in an opening manner, and the communication port 35 is provided with the lower mesh filter 34 , whereby it is possible to ensure an increased area of the lower mesh filter 34 easily while saving space without increasing the cross-sectional area of the coarse dust air passage 31 or the size of a vacuum cleaner main body 2 , etc.

1 . An electric vacuum cleaner comprising: 
 a vacuum cleaner main body with an electric blower housed therein comprising an intake port and an exhaust port;    a separating section for separating dust that is sucked therein with air through the intake port by driving the electric blower into coarse dust and fine dust;    a coarse dust air passage into which the coarse dust flows with part of the air;    a fine dust air passage provided parallel with the coarse dust air passage into which the fine dust flows with the rest of the air;    a partition wall positioned between the coarse dust air passage and the fine dust air passage;    an opening portion opened in the partition wall along the coarse dust air passage;    a first filter provided in the opening portion; and    a second filter provided on the downstream side of the fine dust air passage.    
   
   
       2 . An electric vacuum cleaner comprising: 
 a vacuum cleaner main body with an electric blower housed therein comprising an intake port and an exhaust port;    a separating section comprising a separating main body part that is formed into an approximately cylindrical shape and communicates with the intake port and an auxiliary opening bored on the periphery of the separating main body part to separate dust that is sucked therein with air through the intake port by driving the electric blower into coarse dust and fine dust;    a coarse dust air passage into which the coarse dust flows with part of the air;    a fine dust air passage provided parallel with the coarse dust air passage into which the fine dust flows with the rest of the air;    a partition wall positioned between the coarse dust air passage and the fine dust air passage;    an opening portion opened in the partition wall along the coarse dust air passage;    a first filter provided in the opening portion; and    a second filter provided on the downstream side of the fine dust air passage.    
   
   
       3 . The electric vacuum cleaner according to  claim 1 , wherein: 
 the coarse dust air passage has a dust collecting function for collecting dust that passes therethrough.    
   
   
       4 . The electric vacuum cleaner according to  claim 3 , wherein: 
 the coarse dust air passage and the fine dust air passage run vertically parallel with each other and are formed below the separating section, and wherein:    the coarse dust air passage has the dust collecting function in a lower part thereof.    
   
   
       5 . The electric vacuum cleaner according to  claim 1 , wherein: 
 the second filter is provided in a position corresponding to that of the first filter along the fine dust air passage.    
   
   
       6 . The electric vacuum cleaner according to  claim 1 , wherein: 
 the second filter is a pleat filter with a crease formed therein along the fine dust air passage.    
   
   
       7 . The electric vacuum cleaner according to  claim 1 , wherein: 
 the vacuum cleaner main body is formed into a vertically longitudinal shape.    
   
   
       8 . An electric vacuum cleaner comprising: 
 a vacuum cleaner main body with an electric blower housed therein comprising an intake port and an exhaust port;    a separating section for separating dust that is sucked therein with air through the intake port by driving the electric blower into coarse dust and fine dust;    a main communication passage into which the coarse dust flows with part of the air;    an auxiliary air passage provided parallel with the main communication passage into which the fine dust flows with the rest of the air;    a partition wall positioned between the main communication passage and the auxiliary air passage;    an opening portion opened in the partition wall along the main communication passage;    a first filter provided in the opening portion; and    a second filter provided on the downstream side of the auxiliary air passage.    
   
   
       9 . The electric vacuum cleaner according to  claim 2 , wherein: 
 the coarse dust air passage has a dust collecting function for collecting dust that passes therethrough.    
   
   
       10 . The electric vacuum cleaner according to  claim 9 , wherein: 
 the coarse dust air passage and the fine dust air passage run vertically parallel with each other and are formed below the separating section, and wherein:    the coarse dust air passage has the dust collecting function in a lower part thereof.    
   
   
       11 . The electric vacuum cleaner according to  claim 2 , wherein: 
 the second filter is provided in a position corresponding to that of the first filter along the fine dust air passage.    
   
   
       12 . The electric vacuum cleaner according to  claim 3 , wherein: 
 the second filter is provided in a position corresponding to that of the first filter along the fine dust air passage.    
   
   
       13 . The electric vacuum cleaner according to  claim 4 , wherein: 
 the second filter is provided in a position corresponding to that of the first filter along the fine dust air passage.    
   
   
       14 . The electric vacuum cleaner according to  claim 9 , wherein: 
 the second filter is provided in a position corresponding to that of the first filter along the fine dust air passage.    
   
   
       15 . The electric vacuum cleaner according to  claim 10 , wherein: 
 the second filter is provided in a position corresponding to that of the first filter along the fine dust air passage.    
   
   
       16 . The electric vacuum cleaner according to  claim 2 , wherein: 
 the second filter is a pleat filter with a crease formed therein along the fine dust air passage.    
   
   
       17 . The electric vacuum cleaner according to  claim 3 , wherein: 
 the second filter is a pleat filter with a crease formed therein along the fine dust air passage.    
   
   
       18 . The electric vacuum cleaner according to  claim 4 , wherein: 
 the second filter is a pleat filter with a crease formed therein along the fine dust air passage.    
   
   
       19 . The electric vacuum cleaner according to  claim 5 , wherein: 
 the second filter is a pleat filter with a crease formed therein along the fine dust air passage.    
   
   
       20 . The electric vacuum cleaner according to  claim 2 , wherein: 
 the vacuum cleaner main body is formed into a vertically longitudinal shape.