Heat exchanger and refrigeration device

Abstract

A heat exchanger includes a plurality of flattened pipes, a header collection pipe, and a plurality of fins joined to the flattened pipes. The flattened pipes are joined to the header collection pipe. A fluid flowing through an interior of the flattened pipes exchanges heat with air flowing outside the flattened pipes. The header collection pipe has a header collection pipe and a cover member. The header collection pipe body is disposed so that a longitudinal direction is vertically oriented. The cover member is disposed inside from an upper end of the header collection pipe body, and closes off an upper side of the header collection pipe body. The header collection pipe body has a pipe end section that extends upward past the cover member. A drainage part is formed in a part of the pipe end section.

1 . A heat exchanger comprising:
 a plurality of flattened pipes;   a header collection pipe, the flattened pipes being joined to the header collection pipe; and   a plurality of fins joined to the flattened pipes,   a fluid flowing through an interior of the flattened pipes exchanging heat with air flowing outside the flattened pipes,   the header collection pipe having
 a header collection pipe body disposed so that a longitudinal direction thereof is vertically oriented, and 
 a cover member disposed inside from an upper end of the header collection pipe body, and closing off an upper side of the header collection pipe body, 
 the header collection pipe body having a pipe end section that extends upward past the cover member, and 
 a drainage part being formed in a part of the pipe end section, the drainage part being a slot formed by a downward receding of a part of the pipe end section. 
   
     
     
         2 . The heat exchanger according to  claim 1 , wherein
 a lower end of the drainage slot is situated below an upper end of the cover member.   
     
     
         3 . A heat exchanger comprising:
 a plurality of flattened pipes;   a header collection pine, the flattened pipes being joined to the header collection pipe; and   a plurality of fins joined to the flattened pipes,   a fluid flowing through an interior of the flattened pipes exchanging heat with air flowing outside the flattened pipes,   the header collection pipe having
 a header collection pipe body disposed so that a longitudinal direction thereof is vertically oriented, and 
 a cover member disposed inside from an upper end of the header collection pipe body, and closing off an upper side of the header collection pine body, 
 the header collection pipe body having a pipe end section that extends upward past the cover member, and 
 a drainage part being formed in a part of the pipe end section, the drainage part being a slot formed above a part of a diametrical outside end of the cover member. 
   
     
     
         4 . The heat exchanger according to  claim 1 , wherein
 at least a part of an outer peripheral part of the cover member is clamped from above and below between the pipe end section and a part of the header collection pipe other than the pipe end section.   
     
     
         5 . A refrigeration device including the heat exchanger of  claim 1 , the refrigeration device further comprising:
 a refrigerant circuit including a compressor, an additional heat exchanger as a first heat exchanger, an expansion valve, and the heat exchanger as a second heat exchanger connected together, the second heat exchanger being configured to function at least as an evaporator of refrigerant.   
     
     
         6 . The heat exchanger according to  claim 2 , wherein
 at least a part of an outer peripheral part of the cover member is clamped from above and below between the pipe end section and a part of the header collection pipe other than the pipe end section.   
     
     
         7 . The heat exchanger according to  claim 3 , wherein
 at least a part of an outer peripheral part of the cover member is clamped from above and below between the pipe end section and a part of the header collection pipe other than the pipe end section.   
     
     
         8 . A refrigeration device including the heat exchanger of  claim 2 , the refrigeration device further comprising:
 a refrigerant circuit including a compressor, an additional heat exchanger as a first heat exchanger, an expansion valve, and the heat exchanger as a second heat exchanger connected together, the second heat exchanger being configured to function at least as an evaporator of refrigerant.   
     
     
         9 . A refrigeration device including the heat exchanger of  claim 3 , the refrigeration device further comprising:
 a refrigerant circuit including a compressor, an additional heat exchanger as a first heat exchanger, an expansion valve, and the heat exchanger as a second heat exchanger connected together, the second heat exchanger being configured to function at least as an evaporator of refrigerant.   
     
     
         10 . A refrigeration device including the heat exchanger of  claim 4 , the refrigeration device further comprising:
 a refrigerant circuit including a compressor, an additional heat exchanger as a first heat exchanger, an expansion valve, and the heat exchanger as a second heat exchanger connected together, the second heat exchanger being configured to function at least as an evaporator of refrigerant.   
     
     
         11 . A refrigeration device including the heat exchanger of  claim 7 , the refrigeration device further comprising:
 a refrigerant circuit including a compressor, an additional heat exchanger as a first heat exchanger, an expansion valve, and the heat exchanger as a second heat exchanger connected together, the second heat exchanger being configured to function at least as an evaporator of refrigerant.