Outdoor unit of air conditioner

Abstract

An outdoor unit of an air conditioner is provided. The outdoor unit includes a heat exchanger, a fan, and a safety guard. The fan is positioned at a downstream side of the heat exchanger and generates a flow of air passing through the heat exchanger. The safety guard includes a plurality of main ribs and a plurality of auxiliary ribs and is positioned at a downstream side of the fan. The plurality of auxiliary ribs intersect with the plurality of main ribs and connect the plurality of main ribs. A thickness reduction region with a reduced thickness is provided in a region of an auxiliary rib, the region being connected to a main rib.

What is claimed is: 
     
         1 . An outdoor unit of an air conditioner, comprising:
 a heat exchanger;   a fan positioned at a downstream side of the heat exchanger and configured to generate a flow of air passing through the heat exchanger; and   a safety guard comprising a plurality of main ribs and a plurality of auxiliary ribs intersecting the plurality of main ribs and connecting the plurality of main ribs, the safety guard being positioned downstream of the fan;   wherein a thickness reduction region with a thickness less than a thickness of an other region of the auxiliary rib is provided in a region of an auxiliary rib, the region being connected to the main rib.   
     
     
         2 . The outdoor unit of an air conditioner, of  claim 1 , wherein:
 based on a first main rib and a second main rib being adjacent to each other,   the auxiliary rib includes a first portion connected to the first main rib, a second portion connected to the second main rib, and a third portion between the first portion and the second portion and connecting the first portion and the second portion, and   with respect to a blowing direction of air flow generated by the fan, a length of the first portion is longer than a length of the second portion, and   the thickness reduction region is provided in the first portion.   
     
     
         3 . The outdoor unit of an air conditioner, of  claim 2 , wherein:
 a thickness of the thickness reduction region is 40% to 80% of a thickness of the main rib.   
     
     
         4 . The outdoor unit of an air conditioner, of  claim 2 , wherein:
 with respect to the blowing direction, downstream ends of the first portion and the second portion are positioned upstream of a downstream end of the main rib.   
     
     
         5 . The outdoor unit of an air conditioner, of  claim 2 , wherein:
 with respect to the blowing direction, a downstream end of the second portion is positioned upstream of a downstream end of the first portion.   
     
     
         6 . The outdoor unit of an air conditioner, of  claim 5 , wherein:
 a downstream end of the third portion has a diagonal form and connects the downstream end of the first portion and the downstream end of the second portion.   
     
     
         7 . The outdoor unit of an air conditioner, of  claim 5 , wherein:
 a downstream end of the third portion has a curved form and connects the downstream end of the first portion and the downstream end of the second portion.   
     
     
         8 . The outdoor unit of an air conditioner, of  claim 2 , wherein:
 a length of a downstream end of the first portion is longer than a length of a downstream end of the second portion, with respect to an extension direction of the auxiliary rib.   
     
     
         9 . The outdoor unit of an air conditioner, of  claim 2 , wherein:
 a length of a downstream end of the first portion is shorter than a length of a downstream end of the second portion, with respect to an extension direction of the auxiliary rib.   
     
     
         10 . The outdoor unit of an air conditioner, of  claim 2 , wherein:
 at least one of an upper surface and a lower surface of the plurality of main ribs is inclined with respect to the blowing direction based on an arrangement direction of the plurality of main ribs.   
     
     
         11 . An outdoor unit of an air conditioner, comprising:
 a heat exchanger;   a fan positioned at a downstream side of the heat exchanger and configured to generate a flow of air passing through the heat exchanger; and   a safety guard including a plurality of main ribs, at least one surface of two surfaces of which is inclined in an arrangement direction with respect to a blowing direction of air flow generated by the fan, and a plurality of auxiliary ribs extending to intersect the plurality of main ribs and connecting the plurality of main ribs, the safety guard being positioned downstream of the fan,   wherein, based on a first main rib and a second main rib of the plurality of main ribs being adjacent to each other,   the auxiliary rib includes a first portion connected to the first main rib, a second portion connected to the second main rib, and a third portion between the first portion and the second portion and connecting the first portion and the second portion, and   with respect to the blowing direction of air flow generated by the fan, a length of the first portion is longer than a length of the second portion, and   a downstream end of the first portion is positioned downstream from a downstream end of the second portion.   
     
     
         12 . The outdoor unit of an air conditioner, of  claim 11 , wherein:
 a downstream end of the third portion connects the downstream end of the first portion to the downstream end of the second portion.   
     
     
         13 . The outdoor unit of an air conditioner, of  claim 11 , wherein:
 the downstream end of the first portion has a length in an extension direction of the auxiliary rib.   
     
     
         14 . The outdoor unit of an air conditioner, of  claim 11 , wherein a thickness reduction region with a thickness less than a thickness of the third portion is provided in a connection region between the first portion and the main rib. 
     
     
         15 . The outdoor unit of an air conditioner, of  claim 14 , wherein:
 a thickness of the thickness reduction region is 40% to 80% of a thickness of the main rib.