Search International and National Patent Collections

1. (WO2017057377) REFRIGERANT LEAKAGE SPOT SPECIFYING METHOD

Pub. No.:    WO/2017/057377    International Application No.:    PCT/JP2016/078489
Publication Date: Fri Apr 07 01:59:59 CEST 2017 International Filing Date: Wed Sep 28 01:59:59 CEST 2016
IPC: F25B 49/02
F24F 11/02
F25B 45/00
Applicants: DAIKIN INDUSTRIES, LTD.
ダイキン工業株式会社
Inventors: MATSUI, Kazuyasu
松井 一泰
KONDOU, Azuma
近藤 東
IKEMIYA, Makoto
池宮 完
TAKEGAMI, Masaaki
竹上 雅章
TANAKA, Naohiro
田中 直宏
Title: REFRIGERANT LEAKAGE SPOT SPECIFYING METHOD
Abstract:
Provided is a refrigerant leakage spot specifying method that is capable of, while suppressing an increase in cost, specifying a refrigerant leakage spot when leakage of a refrigerant occurs. The refrigerant leakage spot specifying method applied in a refrigeration apparatus (100) is a method for specifying a refrigerant leakage spot when leakage of a refrigerant occurs in a refrigerant circuit (RC) including: a compressor (11); a liquid-side closing valve (17) that can form a closed state to block the flow of the refrigerant; a gas-side closing valve (18); and a use-side expansion valve (32). The method includes: a step for dividing the refrigerant circuit (RC) into a plurality of refrigerant flow paths by setting each of the valves to a closed state when the compressor (11) is stopped; and a step for determining whether or not there is a leakage of the refrigerant in any of the refrigerant flow paths by detecting a change in the state of the refrigerant in each of the refrigerant flow paths after the first step.