Air conditioner

Abstract

An air conditioner includes a housing, the housing being internally provided with an accommodating space; an indoor heat exchanger disposed in the accommodating space, and an indoor fan assembly disposed in the accommodating space and arranged opposite to the indoor heat exchanger. The indoor fan assembly including an air duct shell member, an indoor wind wheel. An indoor electric machine and a shielding member. A top of the indoor electric machine is provided with an output shaft and a shaft hole, the output shaft. The shielding member shielding the shaft hole, where a bottom surface of the lower end cover is provided with an upward sunken mounting space, and the shielding member is disposed in the mounting space.

What is claimed is: 
     
         1 . An air conditioner, comprising:
 a housing configured as a shell of the air conditioner, the housing being internally provided with an accommodating space;   an indoor heat exchanger disposed in the accommodating space and configured to exchange heat with indoor air; and   an indoor fan assembly disposed in the accommodating space and arranged opposite to the indoor heat exchanger,   wherein the indoor fan assembly comprises:
 an air duct shell member disposed in the housing; 
 an indoor wind wheel rotatably disposed in the air duct shell member and arranged in a height direction of the air conditioner, a lower end of the indoor wind wheel being provided with a lower end cover, wherein the lower end cover further comprises:
 a bottom plate disposed at the lower end of the indoor wind wheel, the bottom plate being provided with an opening; and 
 a boss disposed at the opening of the bottom plate, the boss extending upward from the opening of the bottom plate, a mounting space being formed in the boss, and the mounting space being in communication with the opening, wherein a top wall of the boss is disposed above the opening, and an indoor electric machine stretches into the mounting space and is in transmission connection with the top wall of the boss, wherein a circumferential side wall of the boss is bent and extends upward at the opening of the bottom plate, and is connected between the bottom plate and the top wall of the boss; 
 
 the indoor electric machine is disposed at a bottom of the air duct shell member, a top of the indoor electric machine being provided with an output shaft and a shaft hole, and the output shaft extending upward through the shaft hole and stretching into the air duct shell member to be in transmission connection with the lower end cover; and 
 a shielding member sleeved on the output shaft, the shielding member being arranged circumferentially around a periphery of the output shaft and shielding the shaft hole, 
   wherein a bottom surface of the lower end cover is provided with an upward sunken mounting space, and the shielding member is disposed in the mounting space.   
     
     
         2 . The air conditioner according to  claim 1 , wherein the circumferential side wall of the boss is continuous. 
     
     
         3 . The air conditioner according to  claim 1 , wherein the boss and the bottom plate are integrally formed. 
     
     
         4 . The air conditioner according to  claim 1 , wherein in a direction from top to bottom, the circumferential side wall of the boss is disposed obliquely away from an axis of the output shaft. 
     
     
         5 . The air conditioner according to  claim 1 , wherein the shielding member further comprises:
 a shielding cover sleeved on the output shaft, the shielding cover being annular, arranged circumferentially around the periphery of the output shaft, and positioned above the shaft hole; and   a flow guide portion being annular, the flow guide portion being arranged circumferentially around a periphery of the shielding cover and extending downward along a circumferential edge of the shielding cover.   
     
     
         6 . The air conditioner according to  claim 5 , wherein a top surface of the flow guide portion is provided with a flow guide surface, and in a direction from top to bottom, the flow guide portion is disposed obliquely away from an axis of the output shaft. 
     
     
         7 . The air conditioner according to  claim 1 , wherein a bottom wall of the air duct shell member is provided with a mounting opening; and
 the indoor fan assembly further comprises a sealing sleeve, the sealing sleeve is sleeved on the top of the indoor electric machine and over an outer side of the output shaft, and the sealing sleeve is abutted between the bottom wall of the air duct shell member and the top of the indoor electric machine to seal a gap between the mounting opening and the indoor electric machine.   
     
     
         8 . The air conditioner according to  claim 7 , wherein a side of the sealing sleeve toward the shielding member is provided in a protruding manner a first enclosure portion, the first enclosure portion being disposed around a circumferential side of the output shaft; and
 the shielding member covers the first enclosure portion.   
     
     
         9 . The air conditioner according to  claim 7 , wherein the bottom wall of the air duct shell member is further provided with a second enclosure portion, the second enclosure portion being disposed around a circumferential edge of the mounting opening and protruding downward relative to the bottom wall of the air duct shell member; and
 the top of the sealing sleeve is provided with a sealing portion, a lower end of the sealing portion being mounted to an inner side of the second enclosure portion to seal a gap between the second enclosure portion and the mounting opening.   
     
     
         10 . The air conditioner according to  claim 9 , wherein the sealing portion is in an annular step shape. 
     
     
         11 . The air conditioner according to  claim 10 , wherein the sealing portion comprises a first step portion that extends into the air duct shell member through the mounting opening, wherein a circumferential outer surface of the first step portion abuts against a circumferential inner surface of the mounting opening. 
     
     
         12 . The air conditioner according to  claim 11 , wherein the scaling portion comprises a second step portion disposed below the first step portion, wherein a diameter of the second step portion is greater than a diameter of the first step portion, and the second step portion is embedded onto an inner surface of the second enclosure portion. 
     
     
         13 . The air conditioner according to  claim 10 , wherein a third enclosure portion is disposed on the bottom wall of the air duct shell member and disposed around a circumferential side of the mounting opening, and the third enclosure portion is disposed upward in a protruding manner relative to the bottom wall of the air duct shell member, wherein an upper end of the sealing portion is mounted on an inner side of the third enclosure portion to seal a gap between the third enclosure portion and the mounting opening. 
     
     
         14 . The air conditioner according to  claim 1 , wherein a bottom wall of the air duct shell member is further provided with an enclosure plate, the enclosure plate being disposed downward in a protruding manner from the bottom wall of the air duct shell member and the enclosure plate being disposed around a circumferential side of the indoor electric machine. 
     
     
         15 . The air conditioner according to  claim 14 , wherein the indoor fan assembly further comprises a water collection tray, the water collection tray being disposed below the air duct shell member, a bottom wall of the water collection tray protruding upward and being provided with a mounting ring and an isolating ring, and the isolating ring being disposed on a circumferential outer side of the mounting ring in a spaced manner;
 the indoor electric machine is mounted to the mounting ring; and   the enclosure plate is disposed above the isolating ring and is located on an outer side of the isolating ring.   
     
     
         16 . The air conditioner according to  claim 15 , wherein the indoor fan assembly comprises a first water collection tray disposed below the air duct shell member, and the indoor heat exchanger is mounted on the first water collection tray and disposed adjacent to the air duct shell member. 
     
     
         17 . The air conditioner according to  claim 16 , wherein the mounting ring is disposed upward in a protruding manner on a bottom wall of the first water collection tray, and the indoor electric machine is mounted to the mounting ring. 
     
     
         18 . The air conditioner according to  claim 17 , wherein the isolating ring is disposed upward in a protruding manner on the bottom wall of the first water collection tray and disposed in a spaced manner on the circumferential outer side of the mounting ring, wherein the enclosure plate is disposed above the isolating ring and located on an outer side of the isolating ring. 
     
     
         19 . The air conditioner according to  claim 1 , wherein the air duct shell member comprises:
 a volute casing disposed in the housing internally provided with an indoor air duct and an air outlet; and   a volute tongue disposed in the volute casing arranged on a side close to the air outlet, and the volute tongue and the volute casing jointly define the indoor air duct.   
     
     
         20 . The air conditioner according to  claim 19 , wherein the air duct shell member is provided with a slot in a side close to the air outlet and an abutting slot in another side;
 wherein the indoor fan assembly comprises a protective screen covering the air outlet, an insertion portion disposed opposite to the slot is disposed on one side of the protective screen, and an abutting portion disposed opposite to the abutting slot is disposed on the other side of the protective screen, wherein the insertion portion inserts into the slot and the abutting portion abuts against the abutting slot.