专利检索 ap:("DAIKIN INDUSTRIES, LTD.") AND inv:"Sayumi HAMA" 第 1 页

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发明申请
METHOD FOR INSPECTING REFRIGERANT PIPE AND REFRIGERANT PIPE 有权

公开(公告)号：US20220107275A1

公开(公告)日：2022-04-07

申请号：US17426444

申请日：2020-01-27

申请人： DAIKIN INDUSTRIES, LTD.

发明人： Shouhei ARAKI , Kunihiro OKADA , Hideo OHYA , Keisuke IMAZU , Sayumi HAMA , Yuuji TANAKA

IPC分类号： G01N21/78 , G01N17/00

摘要： Provided are a method for inspecting a refrigerant pipe, the method being able to quickly determine durability, and a refrigerant pipe confirmed to be highly durable. The method is a method for inspecting a refrigerant pipe containing copper or a copper alloy. In the method, the refrigerant pipe is exposed to an aqueous alkaline solution and inspected based on a color change of the refrigerant pipe due to exposure of the refrigerant pipe to the aqueous alkaline solution.