公开(公告)号：US20200292237A1

公开(公告)日：2020-09-17

申请号：US16649115

申请日：2018-09-14

Applicant: Samsung Electronics Co., Ltd.

Inventor： Sang Mu LEE ,  Akihiro FUJIWARA ,  Hyun Young KIM

IPC: F28D1/02 ,  F28D1/047 ,  F28F1/32 ,  F28F1/40 ,  F25B39/00

Abstract: The present disclosure relates to a heat exchanger and an air conditioner improving heat exchange ability by optimizing the number of high protrusions of a heat transfer tube and a height difference between the high protrusion and a low protrusion to increase the heat transfer performance of the heat transfer tube or reduce the pressure loss in the tube. An air conditioner includes the heat exchanger including a heat transfer tube configured to allow the refrigerant to flow, fins installed on the heat transfer tube, and fin collars forming an insertion hole through which the heat transfer tube is inserted and passes, and the fin collars is in contact with the heat transfer tube by tube expansion of the heat transfer tube. The heat transfer tube includes high protrusions disposed in a spiral shape with respect to a tube axis direction of the heat transfer tube, twenty one to twenty seven of the high protrusions being formed along a circumferential direction of the heat transfer tube, and low protrusions disposed between two of the adjacent high protrusions along the circumferential direction of the heat transfer tube and having a height lower by 0.03 mm to 0.05 mm than the high protrusions.