Title:
CLEANING SYSTEM
Document Type and Number:
WIPO Patent Application WO/2017/145452
Kind Code:
A1
Abstract:
Provided is a cleaning system with which the end of cleaning can be accurately ascertained. The present invention is provided with a liquid delivery pump 10, which brings hot water into contact with a rubber packing and elutes an aromatic component into the hot water, an ozone generator 13, which injects, into the hot water that has been brought into contact with the rubber packing, ozone which oxidatively decomposes the aromatic component eluted from the rubber packing, an inflow ozone gas concentration flow meter 12, which measures the quantity of ozone injected by the ozone generator 13, and an outflow ozone gas concentration flow meter 16, which measures the quantity of ozone remaining after the aromatic component has been oxidatively decomposed by the ozone injected by the ozone generator 13, wherein the quantity of ozone consumption is calculated using the quantity of ozone measured by the inflow ozone gas concentration flow meter 12 and the quantity of ozone measured by the outflow ozone gas concentration flow meter 16, and the end of cleaning of the rubber packing is determined by calculating the rate of change over time in the quantity of ozone consumption on the basis of the abovementioned calculated quantity of ozone consumption.
Inventors:
WADA KEISHI (JP)
HATA KAZUHIRO (JP)
HATA KAZUHIRO (JP)
Application Number:
PCT/JP2016/083588
Publication Date:
August 31, 2017
Filing Date:
November 11, 2016
Export Citation:
Assignee:
HITACHI LTD (JP)
International Classes:
B08B3/08; B08B9/02; C02F1/78
Domestic Patent References:
| WO2014069259A1 | 2014-05-08 |
Foreign References:
| JP2005052803A | 2005-03-03 | |||
| JPH08117708A | 1996-05-14 | |||
| JP4919388B2 | 2012-04-18 |
Attorney, Agent or Firm:
ISONO INTERNATIONAL PATENT OFFICE, P.C. (JP)
Download PDF:
Previous Patent: FUEL CELL POWER GENERATION UNIT AND FUEL CELL STACK
Next Patent: SEMICONDUCTOR STORAGE DEVICE
Next Patent: SEMICONDUCTOR STORAGE DEVICE