Power assembly and surface cleaning apparatus

Abstract

A power assembly and a surface cleaning apparatus. The power assembly includes: a housing, which includes an air outlet and a water outlet; a power source, which is located in the housing and configured to provide fluid power; and a silencing cover, which is arranged between the power source and the housing, and includes a perforated plate and an outer side wall, where water vapor in a working airflow is condensed into liquid on the perforated plate and/or the outer side wall and then drained from the water outlet, and the working airflow that is not condensed into liquid is drained from the air outlet.

1 . A power assembly, comprising:
 a housing, the housing comprising an air outlet and a water outlet;   a power source, located inside the housing and configured to provide fluid power; and   a silencing hood, arranged between the power source and the housing, the silencing hood comprising a perforated plate and an outer wall, wherein   water vapor in a working airflow condenses into liquid on the perforated plate and/or the outer wall and the liquid is discharged from the water outlet, and the working airflow that has not been condensed into liquid is discharged from the air outlet.   
     
     
         2 . The power assembly according to  claim 1 , wherein the air outlet is located on a side surface of the housing, and the water outlet is located on a bottom surface of the housing. 
     
     
         3 . The power assembly according to  claim 1 , wherein the power assembly further comprises:
 a first air channel, communicating an exhaust port of a fan to bottom of the silencing hood; and   a second air channel, communicating the bottom of the silencing hood to the air outlet of the housing, wherein   the working airflow flows, in response to the power source being turned on, through the power source, the first air channel, the second air channel and the air outlet in sequence and is then discharged.   
     
     
         4 . The power assembly according to  claim 3 , wherein the first air channel comprises:
 a path starting from the exhaust port of the fan and extending down along an inner wall of the perforated plate to the bottom of the silencing hood.   
     
     
         5 . The power assembly according to  claim 3 , wherein the first air channel comprises:
 a path starting from the exhaust port of the fan, entering along the perforated plate a space between the perforated plate and the outer wall, turning back via the outer wall to get out of the perforated plate, and then extending down along the inner wall of the perforated plate to the bottom of the silencing hood.   
     
     
         6 . The power assembly according to  claim 3 , wherein the second air channel comprises:
 a path extending from the bottom of the silencing hood upward along a periphery of the outer wall to the air outlet of the housing.   
     
     
         7 . The power assembly according to  claim 1 , wherein the perforated plate and the outer wall form a communicated structure having a U-shaped cross section. 
     
     
         8 . The power assembly according to  claim 7 , wherein a bottom surface of the U-shaped communicated structure comprises at least one water outlet hole. 
     
     
         9 . The power assembly according to  claim 7 , wherein the silencing hood further comprises:
 a hollowed-out assembling bracket, arranged on the inner side of the perforated plate and configured to allow a working airflow or condensed water to pass through.   
     
     
         10 . A surface cleaning device, comprising a power assembly, wherein the power assembly comprises:
 a housing, the housing comprising an air outlet and a water outlet;   a power source, located inside the housing and configured to provide fluid power; and   a silencing hood, arranged between the power source and the housing, the silencing hood comprising a perforated plate and an outer wall, wherein   water vapor in a working airflow condenses into liquid on the perforated plate and/or the outer wall and the liquid is discharged from the water outlet, and the working airflow that has not been condensed into liquid is discharged from the air outlet.   
     
     
         11 . The surface cleaning device according to  claim 10 , wherein the air outlet is located on a side surface of the housing, and the water outlet is located on a bottom surface of the housing. 
     
     
         12 . The surface cleaning device according to  claim 10 , wherein the power assembly further comprises:
 a first air channel, communicating an exhaust port of a fan to bottom of the silencing hood; and   a second air channel, communicating the bottom of the silencing hood to the air outlet of the housing, wherein   the working airflow flows, in response to the power source being turned on, through the power source, the first air channel, the second air channel and the air outlet in sequence and is then discharged.   
     
     
         13 . The surface cleaning device according to  claim 12 , wherein the first air channel comprises:
 a path starting from the exhaust port of the fan and extending down along an inner wall of the perforated plate to the bottom of the silencing hood.   
     
     
         14 . The surface cleaning device according to  claim 12 , wherein the first air channel comprises:
 a path starting from the exhaust port of the fan, entering along the perforated plate a space between the perforated plate and the outer wall, turning back via the outer wall to get out of the perforated plate, and then extending down along the inner wall of the perforated plate to the bottom of the silencing hood.   
     
     
         15 . The surface cleaning device according to  claim 12 , wherein the second air channel comprises:
 a path extending from the bottom of the silencing hood upward along a periphery of the outer wall to the air outlet of the housing.   
     
     
         16 . The surface cleaning device according to  claim 10 , wherein the perforated plate and the outer wall form a communicated structure having a U-shaped cross section. 
     
     
         17 . The surface cleaning device according to  claim 16 , wherein a bottom surface of the U-shaped communicated structure comprises at least one water outlet hole. 
     
     
         18 . The surface cleaning device according to  claim 16 , wherein the silencing hood further comprises:
 a hollowed-out assembling bracket, arranged on the inner side of the perforated plate and configured to allow a working airflow or condensed water to pass through.