Air conditioning indoor unit

Abstract

A wall-mounted air conditioning indoor unit includes a casing, and an air flow direction adjustment unit with plural guide blades positioned between right and left side walls of the outlet passage of the casing. A first of the guide blades is positioned closest to a predetermined side wall of the right and left side walls. In a state in which the first guide blade is postured closer to the predetermined side wall as the first guide blade extends on a downstream side, first and second gaps are formed between first and second sections of the first guide blade and the predetermined side wall, respectively. The first section is part of an end portion of the first blade on the downstream side. The second section is outside the first section. The first gap is equal to or less than 10 mm. The second gap is greater than 10 mm.

1 . A wall-mounted air conditioning indoor unit comprising:
 a casing having an outlet air passage for conditioned air; and   an air flow direction adjustment unit disposed adjacent to an exit of the outlet air passage, the air flow adjustment unit having plural air flow direction guide blades configured to adjust a direction of an air flow of conditioned air,   the plural air flow direction guide blades being positioned between right and left side walls of the outlet air passage, and   a first air flow direction guide blade of the plural air flow direction guide blades being positioned closest to a predetermined side wall of the right and left side walls,   in a state in which the first air flow direction guide blade is postured closer to the predetermined side wall as the first air flow direction guide blade extends on a downstream side of the air flow of the conditioned air,
 a first gap being formed between a first section of the first air flow direction guide blade and the predetermined side wall, the first section being part of an end portion of the first air flow direction guide blade on the downstream side, 
 the first gap being equal to or less than 10 mm, 
 a second gap being formed between a second section of the first air flow direction guide blade and the predetermined side wall, the second section being outside the first section of the end portion on the downstream side, and 
 the second gap being greater than 10 mm. 
   
     
     
         2 . The air conditioning indoor unit according to  claim 1 , wherein
 the first gap between is equal to or less than 10 mm in a center section or a neighboring section thereof between a frontside edge and a backside edge of the exit of the outlet air passage.   
     
     
         3 . The air conditioning indoor unit according to  claim 1 , wherein
 the plural air flow direction guide blades include long blades positioned on both ends in a right and left direction and short blades with sections followed by the air flow that are shorter in length than the long blade.   
     
     
         4 . The air conditioning indoor unit according to  claim 1 , wherein
 the casing has protruding curved surfaces with shapes that spread right and left from an area adjacent to the exit of the outlet air passage and protrude in a main flow direction of the air flow.   
     
     
         5 . The air conditioning indoor unit according to  claim 4 , wherein
 a protruding height of the protruding curved surfaces in the main flow direction of the air flow is equal to or less than half of a thickness between the right and left side walls of the outlet air passage and right and left side surfaces of the casing, respectively.   
     
     
         6 . The air conditioning indoor unit according to  claim 4 , wherein
 the predetermined side wall and the protruding curved surfaces are continuous via a curved surface with a degree of curvature larger than a degree of curvature of the protruding curved surfaces.   
     
     
         7 . The air conditioning indoor unit according to  claim 4 , further comprising
 ribs that project from the protruding curved surfaces and extend in the right and left direction.   
     
     
         8 . The air conditioning indoor unit according to  claim 1 , further comprising
 plural guide plates disposed on the downstream side of the exit of the outlet air passage, the guide plates being configured to change a direction of flows along the right and left side walls of the outlet air passage, and to guide the flows right and left.   
     
     
         9 . The air conditioning indoor unit according to  claim 2 , wherein
 the plural air flow direction guide blades include long blades positioned on both ends in a right and left direction and short blades with sections followed by the air flow that are shorter in length than the long blades.   
     
     
         10 . The air conditioning indoor unit according to  claim 2 , wherein
 the casing has protruding curved surfaces with shapes that spread right and left from an area adjacent to the exit of the outlet air passage and protrude in a main flow direction of the air flow.   
     
     
         11 . The air conditioning indoor unit according to  claim 3 , wherein
 the casing has protruding curved surfaces with shapes that spread right and left from an area adjacent to the exit of the outlet air passage and protrude in a main flow direction of the air flow.   
     
     
         12 . The air conditioning indoor unit according to  claim 5 , wherein
 the predetermined side wall and the protruding curved surfaces are continuous via a curved surface with a degree of curvature larger than a degree of curvature of the protruding curved surfaces.   
     
     
         13 . The air conditioning indoor unit according to  claim 5 , further comprising
 ribs that project from the protruding curved surfaces and extend in the right and left direction.   
     
     
         14 . The air conditioning indoor unit according to  claim 6 , further comprising
 ribs that project from the protruding curved surfaces and extend in the right and left direction.   
     
     
         15 . The air conditioning indoor unit according to  claim 2 , further comprising
 plural guide plates disposed on the downstream side of the exit of the outlet air passage, the guide plates being configured to change a direction of flows along the right and left side walls of the outlet air passage, and to guide the flows right and left.   
     
     
         16 . The air conditioning indoor unit according to  claim 3 , further comprising
 plural guide plates disposed on the downstream side of the exit of the outlet air passage, the guide plates being configured to change a direction of flows along the right and left side walls of the outlet air passage, and to guide the flows right and left.   
     
     
         17 . The air conditioning indoor unit according to  claim 4 , further comprising
 plural guide plates disposed on the downstream side of the exit of the outlet air passage, the guide plates being configured to change a direction of flows along the right and left side walls of the outlet air passage, and to guide the flows right and left.   
     
     
         18 . The air conditioning indoor unit according to  claim 5 , further comprising
 plural guide plates disposed on the downstream side of the exit of the outlet air passage, the guide plates being configured to change a direction of flows along the right and left side walls of the outlet air passage, and to guide the flows right and left.   
     
     
         19 . The air conditioning indoor unit according to  claim 6 , further comprising
 plural guide plates disposed on the downstream side of the exit of the outlet air passage, the guide plates being configured to change a direction of flows along the right and left side walls of the outlet air passage, and to guide the flows right and left.   
     
     
         20 . The air conditioning indoor unit according to  claim 7 , further comprising
 plural guide plates disposed on the downstream side of the exit of the outlet air passage, the guide plates being configured to change a direction of flows along the right and left side walls of the outlet air passage, and to guide the flows right and left.