Vacuum cleaner

Abstract

A vacuum cleaner for reducing noise from being transmitted to the exterior. The vacuum cleaner includes a main body forming an outer appearance of the vacuum cleaner and including a blower unit for generating suction force and blowing force and a discharge hole through which purified air from which foreign matter has been filtered is discharged, a discharge passage for guiding air discharged from the blower unit to the discharge hole, and a spiral shaped intercepting passage for forming a part of the discharge passage and for preventing noise of the blower unit from being transmitted to the exterior. A guide member forming the intercepting passage is disposed at the outside of the blower unit and serves as an acoustic absorber so that noise transmission to the exterior is reduced.

1 . A vacuum cleaner comprising: 
 a main body forming an outer appearance of the vacuum cleaner and comprising a discharge hole through which purified air is discharged;    a blower unit installed in the main body to generate a suction force and a blowing force;    a discharge passage installed in the main body to guide air discharged from the blower unit to the discharge hole; and    an intercepting passage forming a part of the discharge passage, and to enclose an outer side of the blower unit to prevent noise of the blower unit from being transmitted to the exterior.    
   
   
       2 . The vacuum cleaner according to  claim 1 , wherein the intercepting passage is comprises a spiral shape to enclose the outer side of the blower unit.  
   
   
       3 . The vacuum cleaner according to  claim 2 , wherein the intercepting passage comprises a spiral-shaped guide member having a gradually increased radius, to enclose a radial directional outer side of the blower unit.  
   
   
       4 . The vacuum cleaner according to  claim 3 , further comprising: 
 a duct member comprising a substantially rectangular shape and accommodated in the main body, and wherein the guide member is disposed in the duct member;    a resonance chamber formed in a corner of the duct member to reduce noise transmitted through the intercepting passage; and    a hole formed in the guide member to communicate the resonance chamber with the intercepting passage.    
   
   
       5 . The vacuum cleaner according to  claim 1 , wherein the blower unit comprises: 
 a blower fan to generate the suction force and the blowing force; and    a motor to rotate the blower fan; and wherein    the blower fan and the motor are arranged in a vertical direction such that axes thereof are substantially aligned with a direction of gravity.    
   
   
       6 . The vacuum cleaner according to  claim 5 , wherein a cross section area of the intercepting passage is gradually increased from the blower unit to the discharge hole.  
   
   
       7 . The vacuum cleaner according to  claim 1 , wherein the intercepting passage comprises an acoustic absorber to absorb noise transmitted through the intercepting passage.  
   
   
       8 . A vacuum cleaner comprising: 
 a main body forming an outer appearance of the vacuum cleaner and comprising a blower unit to generate a suction force and a blowing force and a discharge hole through which purified air from which foreign matter has been filtered is discharged;    a discharge passage to guide air discharged from the blower unit to the discharge hole; and    a spiral shaped intercepting passage forming a part of the discharge passage to prevent noise of the blower unit from being transmitted to the exterior.    
   
   
       9 . The vacuum cleaner according to  claim 8 , wherein the intercepting passage encloses an outer side of the blower unit.  
   
   
       10 . The vacuum cleaner according to  claim 9 , wherein the intercepting passage comprises a spiral-shaped guide member having a gradually increased radius, to enclose the outer side of the blower unit in a radial direction.  
   
   
       11 . The vacuum cleaner according to  claim 10 , further comprising: 
 a duct member comprises a substantially rectangular shape and accommodated in the main body, and wherein the guide member is disposed in the duct member;    a resonance chamber formed in a corner of the duct member to reduce noise transmitted through the intercepting passage; and    a hole formed in the guide member to communicate the resonance chamber with the intercepting passage.    
   
   
       12 . The vacuum cleaner according to  claim 8 , wherein the blower unit comprises: 
 a blower fan to generate the suction force and the blowing force; and    a motor to rotate the blower fan; and    wherein the blower fan and the motor are arranged in a vertical direction such that axes thereof are substantially aligned with a direction of gravity.    
   
   
       13 . The vacuum cleaner according to  claim 8 , wherein a cross section area of the intercepting passage is gradually increased from the blower unit to the discharge hole.  
   
   
       14 . The vacuum cleaner according to  claim 8 , wherein the intercepting passage comprises an acoustic absorber to absorb noise transmitted through the intercepting passage.  
   
   
       15 . A vacuum cleaner comprising: 
 a blower unit to generate a suction force and a blowing force, and    an intercepting passage to encircle blowing unit, thereby preventing noise form being transmitted to an exterior of the vacuum cleaner.    
   
   
       16 . The vacuum cleaner of  claim 15 , wherein the blowing unit comprises anti-vibration members installed to ends of the blower unit to elastically support the ends of the blowing unit, to thereby reduce vibration generated during an operation of the blower unit.  
   
   
       17 . The vacuum cleaner of  claim 15 , further comprising an acoustic absorber positioned within the intercepting passage to absorb noise transmitted through the intercepting passage.  
   
   
       18 . The vacuum cleaner of  claim 15 , wherein the intercepting passage comprises a guide member having a gradually increased radium to encircle the blowing unit.  
   
   
       19 . The vacuum cleaner of  claim 18 , further comprising a duct member to disposed the guide member therein.  
   
   
       20 . The vacuum cleaner of  claim 19 , wherein the duct member is of a rectangular shape and comprises a resonance chamber formed in a corner thereof to reduce noise transmitted through the intercepting passage, and a hole formed in the guide member to communicate the resonance chamber with the intercepting passage.