Title:
CORROSION RESISTANCE DIAGNOSIS DEVICE, HEAT EXCHANGER, AIR CONDITIONER, METHOD FOR MANUFACTURING CORROSION RESISTANCE DIAGNOSIS DEVICE, AND DIAGNOSIS METHOD
Document Type and Number:
WIPO Patent Application WO/2017/199569
Kind Code:
A1
Abstract:
The present invention is a diagnosis component characterized by perceiving a service life point of an air conditioner outdoor unit and a remaining service life at the time of diagnosis, a method for manufacturing the diagnosis component, and a diagnosis method. In the present invention, a portion of an aluminum flat tube provided with a zinc sacrificial layer for an air conditioner is cut to expose an aluminum core, and an aluminum material provided with a zinc sacrificial layer in which a zinc sacrificial material and the aluminum core are combined is used. The time that a predetermined region of a cut-surface core material leaves a range protected from corrosion by the zinc sacrificial layer is designated as a service life point. The remaining service life until the service life point is diagnosed from a time dependency database of zinc sacrificial layer corrosion depths. The zinc sacrificial layer corrosion depth is measured using the cut surface as a reference surface and using the height from the reference surface as a residual part of the zinc sacrificial layer.
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Inventors:
KURIKI HIRONORI (JP)
HIRAI YASUNOBU (JP)
HIRAI YASUNOBU (JP)
Application Number:
PCT/JP2017/010982
Publication Date:
November 23, 2017
Filing Date:
March 17, 2017
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP (JP)
International Classes:
G01N17/04; F28F19/06
Domestic Patent References:
| WO2015063903A1 | 2015-05-07 |
Foreign References:
| JP2006002223A | 2006-01-05 | |||
| US20040222084A1 | 2004-11-11 | |||
| US20140218006A1 | 2014-08-07 |
Attorney, Agent or Firm:
KISA PATENT & TRADEMARK FIRM (JP)
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