Title:
APPARATUS FOR MEASURING THE DEGREE OF VACUUM OF A MULTISTAGE VACUUM HEAT-INSULATING MEMBER, AND MEASUREMENT METHOD USING SAME
Document Type and Number:
WIPO Patent Application WO/2012/141460
Kind Code:
A3
Abstract:
The present invention relates to an apparatus for measuring the degree of vacuum of a multistage vacuum heat-insulating member and to a measurement method using same. To this end, the present invention provides an apparatus for measuring the degree of vacuum of a multistage vacuum heat-insulating member comprising: a chamber in which a plurality of vacuum heat-insulating members are accommodated and which forms a sealed space; a shelf arranged within the chamber so as to support the plurality of vacuum heat-insulating members in a plurality of layers; a displacement sensor for sensing the displacement of each outer shell of the vacuum heat-insulating members stacked on the shelf; and vacuum means connected to the chamber so as to regulate the pressure of the internal space of the chamber. In addition, a method for measuring the degree of vacuum of a vacuum heat-insulating member, including a core and an outer shell covering the core, comprises placing and sealing a plurality of vacuum heat-insulating members into the internal space of a chamber, evacuating the internal space of the chamber, and measuring the displacement of the outer shell of the vacuum heat-insulating member caused by the variation in pressure, to thereby verify whether or not the vacuum heat-insulating member is damaged.
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Inventors:
HAN JUNG PIL (KR)
JEONG JONG KYON (KR)
BANG SON CHEAL (KR)
HWANG SUNG SEOCK (KR)
JEONG JONG KYON (KR)
BANG SON CHEAL (KR)
HWANG SUNG SEOCK (KR)
Application Number:
PCT/KR2012/002671
Publication Date:
January 10, 2013
Filing Date:
April 09, 2012
Export Citation:
Assignee:
LG HAUSYS LTD (KR)
HAN JUNG PIL (KR)
JEONG JONG KYON (KR)
BANG SON CHEAL (KR)
HWANG SUNG SEOCK (KR)
HAN JUNG PIL (KR)
JEONG JONG KYON (KR)
BANG SON CHEAL (KR)
HWANG SUNG SEOCK (KR)
International Classes:
G01L21/00; G01B11/16
Foreign References:
| JPH07270267A | 1995-10-20 | |||
| US4709578A | 1987-12-01 | |||
| JPH0579940A | 1993-03-30 | |||
| US5013384A | 1991-05-07 |
Attorney, Agent or Firm:
DAE-A INTELLECTUAL PROPERTY CONSULTING (Hanyang Bldg.123 Yeoksam-ro, Gangnam-gu, Seoul 135-936, KR)
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Claims:
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