Outdoor unit of refrigeration apparatus

Abstract

An outdoor unit of a refrigeration apparatus includes a heat exchanger constructed of aluminum or aluminum alloy, a floor frame, and a cap. The heat exchanger has a plurality of flat pipes arranged in rows so as to face a side face, a header manifold connected to each of the flat pipes, and a plurality of fins joined to the flat so that an exchange of heat occurs between a fluid flowing inside the flat pipes and air flowing outside the fiat pipes. The heat exchanger is mounted on the floor frame. The cap covers a lower end part of the header manifold from below the header manifold. The cap has a first drainage structure arranged so that if there is a gap between the header manifold and the cap water that has entered the cap via the gap drains out.

1 . An outdoor unit of a refrigeration apparatus, comprising:
 a heat exchanger constructed of aluminum or aluminum alloy, the heat exchanger having
 a plurality of flat pipes arranged in rows so as to face a side face, 
 a header manifold, each of the flat pipes being connected to the header manifold, and 
 a plurality of fins joined to the flat so that an exchange of heat occurs between a fluid flowing inside the flat pipes and air flowing outside the flat pipes; 
   a floor frame, the heat exchanger being mounted on the floor frame; and   a cap covering a lower end part of the header manifold from below the header manifold,   the cap having a first drainage structure arranged so that if there is a gap between the header manifold and the cap water that has entered the cap via the gap drains out.   
     
     
         2 . The outdoor unit according to  claim 1 , wherein p 1  the cap has a bottom face part and a side face part, and the first side face part has the first drainage structure. 
     
     
         3 . The outdoor unit according to  claim 1 , wherein:
 the first drainage structure is an opening, a bottom face of the opening is disposed lower than a lower end of the header manifold, and the bottom face is arranged at a downward incline as the bottom face extends from inside of the cap toward outside of the cap.   
     
     
         4 . The outdoor unit according to  claim 2 , wherein
 the bottom face part has a projection on a surface thereof that faces the floor frame.   
     
     
         5 . The outdoor unit according to  claim 4 , wherein
 the projection has a second drainage structure.   
     
     
         6 . The outdoor unit according to  claim 1 , wherein
 the cap is arranged and configured so that there is no gap between the cap and the header manifold through which water can enter.   
     
     
         7 . The outdoor unit according to  claim 2 , wherein
 the first drainage structure is an opening, a bottom face of the opening is disposed lower than a lower end of the header manifold, and the bottom face is arranged at a downward incline as the bottom face extends from inside of the cap toward outside of the cap.   
     
     
         8 . The outdoor unit according to  claim 7 , wherein
 the bottom face part has a projection on a surface thereof that faces the floor frame.   
     
     
         9 . The outdoor unit according to  claim 8 , wherein
 the projection has a second drainage structure.   
     
     
         10 . The outdoor unit according to  claim 3 , wherein
 a bottom face part of the cap has a projection on a surface thereof that faces the floor frame.   
     
     
         11 . The outdoor unit according to  claim 10 , wherein the projection has a second drainage structure.