Heat exchanger, heat exchanger unit, and refrigeration cycle apparatus

Abstract

A heat exchanger in which an end portion of a heat exchange element is appropriately joined to an insertion hole of a header. The heat exchanger includes a heat exchange element extending in a first direction and a header to which the heat exchange element is connected. The heat exchange element includes at least one heat transfer tube extending in the first direction and a fin provided on part of an edge portion of the at least one heat transfer tube in a second direction crossing orthogonally with the first direction. An end portion in the first direction of the heat exchange element includes an insertion part being inserted into an interior of the header, an abutment part abutting the header in a part other than the insertion part, and a spaced-apart part being spaced apart from the header in a part other than the insertion part.

1 . A heat exchanger comprising:
 a heat exchange element extending in a first direction; and   a header to which the heat exchange element is connected,   the heat exchange element including
 at least one heat transfer tube extending in the first direction, and 
 a fin provided on part of an edge portion of the at least one heat transfer tube in a second direction crossing orthogonally with the first direction, 
   wherein an end portion in the first direction of the heat exchange element includes
 an insertion part being inserted into an interior of the header, 
 an abutment part abutting the header in a part other than the insertion part, and 
 a spaced-apart part being spaced apart from the header in a part other than the insertion part, and 
   wherein the abutment part is located between the insertion part and the spaced-apart part, and at least one part of the abutment part is a part of an end face in the first direction of the fin.   
     
     
         2 - 4 . (canceled) 
     
     
         5 . The heat exchanger of  claim 1 , wherein at least one part of the abutment part is a part of the at least one heat transfer tube and abuts the header in the first direction. 
     
     
         6 . (canceled) 
     
     
         7 . The heat exchanger of  claim 1 , wherein the header has a surface to which the heat exchange element is connected, and the surface has protrusions and depressions being arranged in parallel in the second direction. 
     
     
         8 . The heat exchanger of  claim 1 , wherein the at least one heat transfer tube is a flat multi-hole tube. 
     
     
         9 . A heat exchanger unit comprising the heat exchanger of  claim 1 . 
     
     
         10 . A refrigeration cycle apparatus comprising the heat exchanger unit of  claim 9 . 
     
     
         11 . A heat exchanger comprising:
 a heat exchange element extending in a first direction; and   a header to which the heat exchange element is connected,   the heat exchange element including
 at least one heat transfer tube extending in the first direction, and 
 a fin provided on part of an edge portion of the at least one heat transfer tube in a second direction crossing orthogonally with the first direction, 
   wherein an end portion in the first direction of the heat exchange element includes
 an insertion part being inserted into an interior of the header, 
 an abutment part abutting the header in a part other than the insertion part, and 
 a spaced-apart part being spaced apart from the header in a part other than the insertion part, and 
   wherein the spaced-apart part is located between the insertion part and the abutment part in the second direction.