Indoor unit and air-conditioning apparatus

Abstract

An indoor unit includes: a casing that has an air outlet and an air inlet, and inside which an air passage is formed; a cross flow fan disposed in the air passage and configured to blow out, through the air outlet, air sucked in from the air inlet; a stabilizer configured to stabilize vortex of air caused by circulation of air and generated inside the cross flow fan upon rotation thereof; and a guide wall having a surface defining an outlet side air passage being a part of the air passage, the part being in downstream of the cross flow fan, wherein the stabilizer has a first surface that defines a surface opposite to the guide wall in the outlet side air passage, and a part of the outlet side air passage is formed such that a distance in a vertical direction from the first surface to the guide wall gradually decreases toward the downstream.

1 . An indoor unit comprising:
 a casing that has an air outlet and an air inlet, and inside which an air passage is formed:   a cross flow fan disposed in the air passage and configured to blow out, through the air outlet, air sucked in from the air inlet;   a stabilizer configured to stabilize vortex of air caused by circulation of air and generated inside the cross flow fan upon rotation thereof, and   a guide wall having a surface defining an outlet side air passage being a part of the air passage, the part being in downstream of the cross flow fan, wherein   the stabilizer has a first surface that defines a surface opposite to the guide wall in the outlet side air passage, and   a part of the outlet side air passage is formed such that a distance in a vertical direction from the first surface to the guide wall gradually decreases toward the downstream,   wherein   the first surface has
 a flow-reduction surface that is inclined in such a manner as to gradually approach the guide wall toward the downstream, and 
 a downstream surface located downstream of the flow-reduction surface, and 
   an angle formed between a vertical plane and a plane connecting an upstream end and a downstream end of the downstream surface is smaller than an angle formed between the vertical plane and a plane connecting an upstream end and a downstream end of the flow-reduction surface.   
     
     
         2 . (canceled) 
     
     
         3 . (canceled) 
     
     
         4 . The indoor unit of  claim 1 , wherein
 a distance from the downstream end of the flow-reduction surface to the guide wall differs in a rotational axis direction of the cross flow fan, and   the distance is shorter at an end portion in the rotational axis direction than at a central portion in the rotational axis direction.   
     
     
         5 . The indoor unit of any one of  claim 1 , wherein the stabilizer
 has a tongue-shaped portion that is an apex of a convex portion of the stabilizer toward the cross flow fan.   
     
     
         6 . The indoor unit of  claim 5 , wherein an end portion of the cross flow fan located nearest the air outlet in a horizontal direction
 is positioned between the tongue-shaped portion and the downstream end of the flow-reduction surface in a horizontal direction.   
     
     
         7 . The indoor unit of  claim 5 , further comprising a heat exchanger configured to exchange heat between refrigerant and air sucked in from the air inlet by the cross flow fan, wherein
 an end portion of the heat exchanger located nearest the air outlet in a horizontal direction   is at a same position as the tongue-shaped portion or is positioned closer to the air outlet than the tongue-shaped portion in a horizontal direction.   
     
     
         8 . An air-conditioning apparatus comprising:
 the indoor unit of  claim 1 , and   an outdoor unit connected to the indoor unit by pipes to form a refrigerant circuit in which refrigerant circulates.