Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
REFRIGERANT LEAKAGE SPOT SPECIFYING METHOD
Document Type and Number:
WIPO Patent Application WO/2017/057377
Kind Code:
A1
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.

Inventors:
MATSUI, Kazuyasu
KONDOU, Azuma
IKEMIYA, Makoto
TAKEGAMI, Masaaki
TANAKA, Naohiro
Application Number:
JP2016/078489
Publication Date:
April 06, 2017
Filing Date:
September 27, 2016
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
DAIKIN INDUSTRIES, LTD. (Umeda Center Building, 4-12 Nakazaki-Nishi 2-Chome, Kita-ku, Osaka-sh, Osaka 23, 〒5308323, JP)
International Classes:
F25B49/02; F24F11/02; F25B45/00
Foreign References:
JP2005241050A2005-09-08
JP5306449B22013-10-02
JP2014095514A2014-05-22
JPH05118720A1993-05-14
JP2013053756A2013-03-21
JP2013108856A2013-06-06
JP2011226704A2011-11-10
JP2013040730A2013-02-28
Other References:
See also references of EP 3358277A4
Attorney, Agent or Firm:
SHINJYU GLOBAL IP (South Forest Bldg, 1-4-19 Minamimori-machi, Kita-ku, Osaka-sh, Osaka 54, 〒5300054, JP)
Download PDF: