Title:
冷媒配管の検査方法および冷媒配管
Document Type and Number:
Japanese Patent JP6791276
Kind Code:
B2
Abstract:
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 inspected based on a color change of the refrigerant pipe due to exposure of the refrigerant pipe to an aqueous alkaline solution.
Inventors:
Araki Shohei
Kunihiro Okada
Hideo Ohya
Keisuke Imazu
Sayumi Hama
Yuji Tanaka
Kunihiro Okada
Hideo Ohya
Keisuke Imazu
Sayumi Hama
Yuji Tanaka
Application Number:
JP2019013630A
Publication Date:
November 25, 2020
Filing Date:
January 29, 2019
Export Citation:
Assignee:
Daikin Industries, Ltd.
International Classes:
G01N33/2045; C23F11/00; G01N17/00
Domestic Patent References:
| JP1276064A | ||||
| JP2009168692A | ||||
| JP57073675A | ||||
| JP58171575A | ||||
| JP2012220251A | ||||
| JP2001074198A | ||||
| JP57054046U | ||||
| JP2003239085A | ||||
| JP62040387A | ||||
| JP7305993A |
Foreign References:
| CN103788072A | ||||
| US20090158827 | ||||
| CN101363792A | ||||
| WO2015012306A1 | ||||
| US4343660 |
Attorney, Agent or Firm:
Shinki Global IP Patent Corporation