Outdoor unit for air-conditioning apparatus

Abstract

An outdoor unit for an air-conditioning apparatus has a roof part installed at a front of a front panel of a casing and above an opening hole and extending in a width direction of the casing, and an outlet grille fixed to the casing and covering the opening hole. The roof part has a main roof portion that extends further forward than the front panel, and a sub-roof portion that extends downward and forward from the main roof portion and has a recession formed between a bottom face of the main roof portion and the sub-roof portion. The outlet grille is located such that an upper end portion of the outlet grille is in contact with the recession. The front panel and the upper end portion of the outlet grille sandwich the roof part.

1 . An outdoor unit for an air-conditioning apparatus, the outdoor unit comprising:
 a casing that has a front panel in which an opening hole is opened;   a fan provided to the casing and configured to blow out air to an outside through the opening hole;   a roof part installed at a front of the front panel and above the opening hole and extending in a width direction of the casing; and   an outlet grille fixed to the casing and covering the opening hole,   the roof part having   a main roof portion that extends further forward than the front panel, and   a sub-roof portion that extends downward and forward from the main roof portion and has a recession formed between a bottom face of the main roof portion and the sub-roof portion,   the outlet grille being located such that an upper end portion of the outlet grille is in contact with the recession,   the front panel and the upper end portion of the outlet grille holding the roof part such that the front panel and the upper end portion of the outlet grille sandwich the roof part,   the casing having a top plate provided on top of the front panel,   the top plate having a top-plate extension portion that extends further forward than a tail end of the main roof portion and covering a portion of the roof part that is in the vicinity of the front panel,   the top-plate extension portion having a flange portion that protrudes downward,   a top face of the main roof portion and a lower edge of the flange portion being in contact with each other in a state in which the outlet grille is fixed to the casing.   
     
     
         2 . (canceled) 
     
     
         3 . (canceled) 
     
     
         4 . The outdoor unit for an air-conditioning apparatus of  claim 1 , wherein, in a state in which the outlet grille is fixed to the casing, the top face of the main roof portion and the lower edge of the flange portion are in contact with each other at a location further forward than a location at which the sub-roof portion branches from the main roof portion. 
     
     
         5 . An outdoor unit for an air-conditioning apparatus, the outdoor unit comprising:
 a casing that has a front panel in which an opening hole is opened;   a fan provided to the casing and configured to blow out air to an outside through the opening hole;   a roof part installed at a front of the front panel and above the opening hole and extending in a width direction of the casing; and   an outlet grille fixed to the casing and covering the opening hole,   the roof part having   a main roof portion that extends further forward than the front panel, and   a sub-roof portion that extends downward and forward from the main roof portion and has a recession formed between a bottom face of the main roof portion and the sub-roof portion,   the outlet grille being located such that an upper end portion of the outlet grille is in contact with the recession,   the front panel and the upper end portion of the outlet grille holding the roof part such that the front panel and the upper end portion of the outlet grille sandwich the roof part,   the roof part having an extension rib that extends from a portion of a tail end of the main roof portion toward the front panel,   in a state in which the outlet grille is fixed to the casing, the extension rib being pressed against the front panel.   
     
     
         6 . The outdoor unit for an air-conditioning apparatus of  claim 1 , wherein
 the main roof portion is inclined further downward as the main roof portion is further away from the front panel,   the main roof portion has a horizontal width that is larger than or equal to an opening-hole diameter of the opening hole in the front panel, and   the roof part has a front-end protrusion provided at a front end of the main roof portion and shaped such that the front-end protrusion protrudes upward.   
     
     
         7 . The outdoor unit for an air-conditioning apparatus of  claim 1 , wherein a top face of the main roof portion is inclined downward from a center in a horizontal width direction toward both end portions in the horizontal width direction. 
     
     
         8 . The outdoor unit for an air-conditioning apparatus of  claim 1 , wherein
 the outlet grille has   a grille body that is a plurality of iron bars,   grille extension portions provided at respective left and right upper ends of the grille body, the grille extension portions each extending further rearward than the upper end portion of the outlet grille, and   fixation portions provided at respective left and right lower ends of the grille body, the fixation portions being fixed to the front panel by screws, and,   at portions above an outer circumference of the opening hole, insertion holes through which the grille extension portions are inserted are opened in the front panel.   
     
     
         9 . The outdoor unit for an air-conditioning apparatus of  claim 1 , wherein the front panel has a bell mouth that protrudes, from an edge of the opening hole in the front panel, rearward and toward a center of the opening hole.