Heat exchanger and outdoor unit comprising said heat exchanger

Abstract

There is provided a heat exchanger capable of suppressing a decrease in the amount of heat exchange due to the nonuniform air velocity distribution. The heat exchanger includes a plurality of rooms partitioned by partition plates inside the inlet header, a plurality of flat tubes connected to each room and a plurality of branch pipes connected to each room and the distributor, in which depending on an air velocity distribution, the number of the branch portions of the branch pipe connected to the room, to which the flat tubes located in a part having a high air velocity are connected, is less than the number of the branch portions of the branch pipe connected to the room, to which the flat tubes passing through a part having a low air velocity, are connected.

1 . A heat exchanger comprising:
 an inlet header located on a refrigerant inlet side;   an outlet header located on a refrigerant outlet side;   a plurality of rooms partitioned by partition plates and provided inside one header of the inlet header or the outlet header;   a plurality of flat tubes connected in parallel between each room of the plurality of rooms provided in the one header of the inlet header or the outlet header and the other header of the inlet header or the outlet header;   a distributor provided in a refrigerant pipe;   a plurality of branch pipes connected to each room and the distributor,   wherein the branch pipe has a branch portion provided between the room and the distributor depending on an air velocity distribution in the heat exchanger, and   the number of the branch portions of the branch pipe connected to the room, to which the flat tubes located in a part having a high air velocity are connected, is less than the number of the branch portions of the branch pipe connected to the room, to which the flat tubes passing through a part having a low air velocity are connected.   
     
     
         2 . The heat exchanger according to  claim 1 ,
 wherein a length of each room in a direction in which the flat tubes connected in parallel are arranged is the same.   
     
     
         3 . The heat exchanger according to  claim 1 ,
 wherein the one header is the inlet header and the other header is the outlet header.   
     
     
         4 . An upward-blowing type outdoor unit of an air conditioner, comprising:
 a blower fan provided at an upper portion;   the heat exchanger according to  claim 1  provided below the blower fan,
 wherein, in the heat exchanger, a parallel direction of the plurality of flat tubes is a vertical direction, and the inlet header and the outlet header are installed upright in the vertical direction. 
   
     
     
         5 . The heat exchanger according to  claim 2 ,
 wherein the one header is the inlet header and the other header is the outlet header.   
     
     
         6 . An upward-blowing type outdoor unit of an air conditioner, comprising:
 a blower fan provided at an upper portion;   the heat exchanger according to  claim 2  provided below the blower fan,
 wherein, in the heat exchanger, a parallel direction of the plurality of flat tubes is a vertical direction, and the inlet header and the outlet header are installed upright in the vertical direction. 
   
     
     
         7 . An upward-blowing type outdoor unit of an air conditioner, comprising:
 a blower fan provided at an upper portion;   the heat exchanger according to  claim 3  provided below the blower fan,
 wherein, in the heat exchanger, a parallel direction of the plurality of flat tubes is a vertical direction, and the inlet header and the outlet header are installed upright in the vertical direction. 
   
     
     
         8 . An upward-blowing type outdoor unit of an air conditioner, comprising:
 a blower fan provided at an upper portion;   the heat exchanger according to claim  5  provided below the blower fan,
 wherein, in the heat exchanger, a parallel direction of the plurality of flat tubes is a vertical direction, and the inlet header and the outlet header are installed upright in the vertical direction.