公开(公告)号：US10782048B2

公开(公告)日：2020-09-22

申请号：US16069952

申请日：2017-01-13

Applicant: LG Electronics Inc.

Inventor： Yongjoo Park ,  Kangsoo Byun ,  Hyunsoo Song ,  Sanggyun Lee

IPC: F25B1/00 ,  F25B5/04 ,  F25B7/00 ,  F25B49/02 ,  C09K5/04 ,  F25B9/06 ,  F25B40/00 ,  F25B43/00

Abstract: An embodiment of the present invention relates to a deep freezer. A deep freezer according to an embodiment of the present invention comprises a plurality of heat exchangers installed to an inlet pipe and performing a heat exchange of a mixed refrigerant suctioned into a compressor. The mixed refrigerant comprises: a high temperature refrigerant which is one selected from among butane (N-butane), 1-butene, and isobutane; and a low temperature refrigerant consisting of ethylene.