| (19) |
 |
|
(11) |
EP 1 657 445 A3 |
| (12) |
EUROPEAN PATENT APPLICATION |
| (88) |
Date of publication A3: |
|
23.05.2007 Bulletin 2007/21 |
| (43) |
Date of publication A2: |
|
17.05.2006 Bulletin 2006/20 |
| (22) |
Date of filing: 29.07.2005 |
|
| (51) |
International Patent Classification (IPC):
|
|
| (84) |
Designated Contracting States: |
|
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE
SI SK TR |
|
Designated Extension States: |
|
AL BA HR MK YU |
| (30) |
Priority: |
21.10.2004 US 970613
|
| (71) |
Applicant: INGERSOLL-RAND COMPANY |
|
Montvale, NJ 07645 (US) |
|
| (72) |
Inventor: |
|
- Lucas, Michael J.
Mooresville
North Carolina 28115 (US)
|
| (74) |
Representative: Holmes, Matthew Peter et al |
|
MARKS & CLERK,
Sussex House,
83-85 Mosley Street
Manchester M2 3LG
Manchester M2 3LG (GB) |
|
| |
|
| (54) |
Compressor discharge pulsation dampener |
(57) A pulsation dampener comprising a first resonator tube having a first tube inlet
in communication with a compressor outlet. The first resonator tube has an outlet
located within a first resonator chamber. The first resonator tube has a length I
1 that is equal to λ
1 / 4 wherein λ
1 is the acoustic component wavelength passing through the first resonator tube and
the first chamber has a length 1
2 that is within 20% of the length 1
1.