Title:
熱交換器の洗浄方法
Document Type and Number:
Japanese Patent JP7042030
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a cleaning method of a heat exchanger capable of easily determining a terminal point of cleaning, and performing stationary cleaning without interrupting cleaning to confirm a removable state of scale.SOLUTION: Scale attached to a heat exchange member is swelled or stripped by controlling a concentration of a first cleaning fluid by allowing the first cleaning liquid to flow into and circulate in a heat exchange member 4a or a fluid container 4, periodically measuring a concentration index of the first cleaning fluid of circulation water, and allowing the first cleaning fluid to additionally flow until the lowering of the concentration index is substantially stopped, and then the scale attached to the heat exchange member is dissolved and removed by controlling concentration of a second cleaning fluid by periodically measuring a concentration index of the second cleaning fluid of the circulation water while allowing the second cleaning fluid to flow and circulate into the circulation water of the heat exchange member 4a or the fluid container 4, and allowing the second cleaning fluid to additionally flow until the lowering of the concentration index is substantially stopped.SELECTED DRAWING: Figure 1
More Like This:
Inventors:
Yusuke Skin
Norihito Kawabe
Norihito Kawabe
Application Number:
JP2017048052A
Publication Date:
March 25, 2022
Filing Date:
March 14, 2017
Export Citation:
Assignee:
Aquas Co., Ltd.
International Classes:
B08B3/08; F28G9/00; B08B9/023; B08B9/032; C11D7/06; C11D7/26; C11D7/28; C11D7/32; C11D7/34; F28F21/08
Domestic Patent References:
| JP2003027263A | ||||
| JP2006300404A | ||||
| JP2000065495A | ||||
| JP2004277675A | ||||
| JP11141804A | ||||
| JP2005042026A | ||||
| JP2002353185A | ||||
| JP2002097586A | ||||
| JP2013031823A | ||||
| JP2000064069A |
Foreign References:
| US20150107626 | ||||
| CN104406452A |
Attorney, Agent or Firm:
Nitsumine International Patent Office, a patent business corporation
Kunio Nakagawa
Kunio Nakagawa