Pressure resistance inspecting method and pressure resistance inspecting apparatus for heat exchangers
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jul 14, 2009
Grant Date -
Oct 11, 2007
app pub date -
Apr 21, 2005
filing date -
Apr 22, 2004
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A method of inspecting a heat exchanger for pressure resistance. The heat exchanger includes plural hollow refrigerant channel portions arranged in parallel and each having joints inside thereof, air passing clearances between respective adjacent pairs of refrigerant channel portions, and fins in the respective air passing clearances. The heat exchanger interior is pressurized, irradiated with light from one side, and a monochromatic image of the exchanger is captured by CCD cameras from the other side before and after the pressurization. Each image is divided into dots, luminance data of the dots of each image is converted into binary data items of white areas and black areas with reference to a threshold value, and the number of black areas is counted. The pressure resistance of the heat exchanger is judged based on an increase in the number of black areas after pressurization from the number of black areas before pressurization.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully