US 12,078,427 B2
Heat exchanger and air conditioner having the same
Kouju Yamada, Osaka (JP); Ken Satou, Osaka (JP); Masanori Jindou, Osaka (JP); and Yoshio Oritani, Osaka (JP)
Assigned to DAIKIN INDUSTRIES, LTD., Osaka (JP)
Filed by DAIKIN INDUSTRIES, LTD., Osaka (JP)
Filed on Jun. 29, 2023, as Appl. No. 18/216,177.
Application 18/216,177 is a continuation of application No. 16/757,208, granted, now 11,732,971, previously published as PCT/JP2018/037759, filed on Oct. 10, 2018.
Claims priority of application No. 2017-201545 (JP), filed on Oct. 18, 2017.
Prior Publication US 2023/0341189 A1, Oct. 26, 2023
Int. Cl. F28F 9/02 (2006.01); F28D 7/16 (2006.01)
CPC F28D 7/1653 (2013.01) [F28F 9/0224 (2013.01); F28F 2225/08 (2013.01)] 4 Claims
OG exemplary drawing
 
1. A heat exchanger comprising:
flat pipes arranged side by side in a predetermined step direction, each of the flat pipes comprising a passage for refrigerant; and
a header collecting pipe connected to the flat pipes and that extends along the predetermined step direction, wherein
the header collecting pipe includes:
a flat pipe-side header forming member into which the flat pipes are inserted; and
an opposite-side header forming member that faces the flat pipe-side header forming member, wherein
an internal space exists between the flat pipe-side header forming member and the opposite-side header forming member,
when viewed along the predetermined step direction:
the flat pipe-side header forming member has a flat pipe-side curved portion protruding toward the flat pipes, and
the opposite-side header forming member has:
an opposite-side curved portion protruding toward a side away from the flat pipes; and
an opposite-side straight portion extending straight from an end of the opposite-side curved portion,
an inner diameter of the opposite-side curved portion is smaller than an inner diameter of the flat pipe-side curved portion,
a surface of the opposite-side straight portion facing toward the flat pipes is in contact with an end surface of the flat pipe-side header forming member facing away from the flat pipes, and
the opposite-side straight portion does not face the internal space.