Humidifier

Abstract

A humidifier may include a water tank that stores water, and a humidification water tank that receives water from the water tank to generate humidified air, the humidification water tank including a humidification water tank wall having a chamber in which water is stored; at least one vibrator disposed at a lower side of the humidification water tank wall and having a vibration plate configured to vibrate the water stored in the chamber; a humidification water tank cover disposed at an upper side of the humidification water tank wall, and having an air discharge hole through which the humidified air generated in the chamber is discharged; and a lower extension wall that extends downward from the humidification water tank cover on at least one side of a circumference of the air discharge hole. An upper surface of the vibration plate may be inclined from an upper side toward the lower extension wall.

What is claimed is: 
     
         1 . A humidifier, comprising:
 a water tank that stores water; and   a humidification water tank that receives water from the water tank to generate humidified air, wherein the humidification water tank comprises:
 a humidification water tank wall having a chamber in which water is stored; 
 at least one vibrator disposed at a lower side of the humidification water tank wall and having a vibration plate configured to vibrate the water stored in the chamber; 
 a humidification water tank cover disposed at an upper side of the humidification water tank wall, and having an air discharge hole through which the humidified air generated in the chamber is discharged; and 
 a lower extension wall that extends downward from the humidification water tank cover on at least one side of a circumference of the air discharge hole, wherein the vibration plate is inclined in a direction in which the lower extension wall is disposed. 
   
     
     
         2 . The humidifier of  claim 1 , wherein an inclination angle formed between a surface of the lower extension wall, which extends downward, and an upper surface of the vibration plate is an acute angle. 
     
     
         3 . The humidifier of  claim 1 , wherein the vibration plate is inclined at an inclination angle of from 3° to 5° with respect to an imaginary horizontal line that extends parallel to a ground plane. 
     
     
         4 . The humidifier of  claim 1 , wherein a circumferential surface of the air discharge hole comprises a first region, in which the lower extension wall is disposed, and a second region located in a direction facing the first region, wherein the vibration plate is disposed closer to the first region than the second region. 
     
     
         5 . The humidifier of  claim 1 , wherein the vibration plate is disposed below the air discharge hole. 
     
     
         6 . The humidifier of  claim 1 , wherein the at least one vibrator comprises a plurality of vibrators, each having a vibration plate, wherein the vibration plates comprise a first vibration plate, and a second vibration plate spaced apart from the first vibration plate in a first direction, and wherein the lower extension wall comprises a first lower extension wall, and a second lower extension wall spaced apart from the first lower extension wall in the first direction. 
     
     
         7 . The humidifier of  claim 6 , wherein the first lower extension wall is disposed in a direction facing the first vibration plate, and the second lower extension wall is disposed in a direction facing the second vibration plate. 
     
     
         8 . The humidifier of  claim 6 , wherein a slit is formed between the first lower extension wall and the second lower extension wall that extends in a second direction perpendicular to the first direction. 
     
     
         9 . The humidifier of  claim 6 , wherein the lower extension wall further comprises an additional extension wall that extends in a direction away from each of the first lower extension wall and the second lower extension wall. 
     
     
         10 . The humidifier of  claim 1 , wherein a plurality of inner ribs is formed on the lower extension wall, and wherein the plurality of inner ribs protrudes in an inward direction of the air discharge hole and extends vertically. 
     
     
         11 . The humidifier of  claim 10 , wherein the plurality of inner ribs extend vertically at a position facing the vibration plate. 
     
     
         12 . The humidifier of  claim 10 , wherein a length of each of the plurality of inner ribs protruding from the lower extension wall is greater than a width of the lower extension wall. 
     
     
         13 . The humidifier of  claim 1 , further comprising an inner shell that defines a space in which the water tank is disposed, and having a discharge flow path at a position spaced apart from the water tank, wherein the humidification water tank cover comprises an air discharge pipe that extends upward to allow the humidified air, generated in the humidification water tank, to flow upward, and is connected to a lower end of the inner shell. 
     
     
         14 . The humidifier of  claim 13 , wherein a lower groove is formed in a lower portion of the air discharge pipe, and wherein the lower groove is recessed in a radially outward direction of the air discharge pipe. 
     
     
         15 . The humidifier of  claim 14 , wherein the lower groove is formed at an upper side of the lower extension wall. 
     
     
         16 . A humidifier, comprising:
 a first humidification water tank having a first chamber in which water is heated;   a second humidification water tank connected to the first humidification water tank and having a second chamber in which humidified air is generated using at least one vibrator and water supplied from the first humidification water tank;   a fan disposed at a lower side of the second humidification water tank and configured to generate an air flow; and   a connection pipe that supplies water, stored in the first humidification water tank, to the second humidification water tank, wherein the second humidification water tank comprises an air discharge hole through which the humidified air generated in the second chamber is discharged outside, and an air supply hole through which air blown by the fan is supplied to the second chamber, wherein inside of the second humidification water tank, a lower extension wall is disposed between the air discharge hole and the air supply hole, and extends downward from an upper surface of the second humidification water tank, wherein at least one vibrator is disposed on a lower surface of the second humidification water tank, the at least one vibrator having a vibration plate disposed at a lower side of the air discharge hole and being configured to vibrate water stored in the second chamber, and wherein the vibration plate is disposed closer to the air discharge hole than the air supply hole with respect to the lower extension wall, the vibration plate being inclined in a direction in which the lower extension wall is disposed.   
     
     
         17 . The humidifier of  claim 16 , wherein the at least one vibrator comprises a plurality of vibrators, each having a vibration plate, wherein the vibration plates comprise a first vibration plate, and a second vibration plate spaced apart from the first vibration plate in a first direction, wherein the lower extension wall comprises a first lower extension wall, and a second lower extension wall spaced apart from the first lower extension wall in the first direction, and wherein a slit is formed between the first lower extension wall and the second lower extension wall, the slit being open in a second direction perpendicular to the first direction. 
     
     
         18 . The humidifier of  claim 16 , wherein a vertical length of the slit is half or more of a vertical length of the first lower extension wall or the second lower extension wall. 
     
     
         19 . A humidifier, comprising:
 a humidification water tank wall having a chamber in which water is stored;   at least one vibrator disposed at a lower side of the humidification water tank wall and having a vibration plate configured to vibrate the water stored in the chamber;   a humidification water tank cover disposed at an upper side of the humidification water tank wall, and having an air discharge hole through which the humidified air generated in the chamber is discharged;   an air discharge pipe that extends upward from the humidification water tank cover at a circumference of the air discharge hole, and having an air discharge pipe channel in which the humidified air flows; and   a lower extension wall that extends downward from the humidification water tank cover on at least one side of the circumference of the air discharge hole, wherein a lower groove is formed in a lower portion of the air discharge pipe, the lower groove being recessed in a radially outward direction of the air discharge pipe.   
     
     
         20 . The humidifier of  claim 19 , wherein an upper surface of the vibration plate is inclined from an upper side toward the lower extension wall.