METHOD FOR TESTING THE TIGHTNESS OF AIR CONDITIONERS IN MOTOR VEHICLES

WIPO Patent Application WO/2004/046675

A2

The invention relates to a method for testing the tightness of refrigerating machines, particularly air conditioners in motor vehicles, according to which the apparatus that is to be tested is impinged upon by a gas at excess pressure. The aim of the invention is to create a method which detects all leaks, the size of which has an impact on the environment and health, while requiring substantially less effort to be implemented. Said aim is achieved by separating the adapters (7; 8) of a filling and measuring device from the air conditioner following the first test, connecting the adapters (7; 8) of a second measuring device to the air conditioner after an extended period of time, and comparing the test results thereof with the results of the first test, whereupon the air conditioner is deaerated and separated from the adapters (7; 8) of the second measuring device.

MEIER UWE (DE)
KAEMMER GUIDO (DE)
BERGER ROLAND (DE)

PCT/DE2003/003812

June 03, 2004

November 18, 2003

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DUERR SOMAC GMBH (DE)
MEIER UWE (DE)
KAEMMER GUIDO (DE)
BERGER ROLAND (DE)

G01M3/26; G01M3/28; G01M3/32; (IPC1-7): G01M3/28

EP1022552A2	2000-07-26
DE19737869A1	1999-03-04
DE19714601A1	1997-11-06
FR2735234A1	1996-12-13
US5249434A	1993-10-05
DE2907234A1	1980-09-04
US3538961A	1970-11-10
US4755957A	1988-07-05

PATENT ABSTRACTS OF JAPAN Bd. 013, Nr. 349 (P-911), 7. August 1989 (1989-08-07) & JP 01 109233 A (HITACHI LTD), 26. April 1989 (1989-04-26)

Findeisen, Andreas (Andréstrasse 25, Chemnitz, DE)

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