The ornamental design for an airconditioner, as shown and described.
1. Air conditioner
1.1 : Perspective
1.2 : Front
1.3 : Back
1.4 : Left
1.5 : Right
1.6 : Top
1.7 : Bottom
1.8 : Reference view
1.9 : Perspective view 2
1.10 : Front view 2
1.11 : Back view 2
1.12 : Left view 2
1.13 : Right view 2
1.14 : Top view 2
1.15 : Bottom view 2
1.16 : Perspective view 3
1.17 : Front view 3
1.18 : Back view 3
1.19 : Left view 3
1.20 : Right view 3
1.21 : Top view 3
1.22 : Bottom view 3
1.23 : Perspective view 4
The broken lines depict portions of the air conditioner that form no part of the claimed design; reproduction 1.1 is a front perspective view of the air conditioner; reproductions 1.2 to 1.7 are the front, back, left, right, top and bottom views of reproduction 1.1; reproduction 1.8 is a reference view thereof showing the display part in operation and forms no part of the claimed design; reproduction 1.9 is a perspective view thereof in a condition that the most front panel vertically moved upwards; reproductions 1.10 to 1.15 are the front, back, left, right, top and bottom views of reproduction 1.9; reproduction 1.16 is a perspective view of reproduction 1.1 in a condition that the most front panel vertically moved downward and the top filter slid forward; reproduction 1.17 to 1.23 are the front, back, left, right, top, bottom and top perspective views of reproduction 1.16; This design is for a wall-mount air conditioner in which several panels are stacked at the same interval and blows air both from the gap between the front panels without changing the appearance and from the outlet exposed at the bottom in condition that the most front panel vertically moving upwards; also, the most front panel moves vertically downward, and the top filter slides forward, so that it makes easy to replace the filter.