Global Patent Index - EP 0780627 B1

EP 0780627 B1 2000-01-12 - Process and apparatus for cleaning the end plate of a heat exchanger from the inner side of the heat exchanger bundle

Title (en)

Process and apparatus for cleaning the end plate of a heat exchanger from the inner side of the heat exchanger bundle

Title (de)

Verfahren und Vorrichtung zur Reinigung der Endplatte eines Wärmetauschers vom Innern des Wärmetauscherbündels

Title (fr)

Procédé et dispositif de nettoyage d'une plaque tubulaire d'un échangeur de chaleur depuis l'intérieur du faisceau de l'échangeur de chaleur

Publication

EP 0780627 B1 (FR)

Application

EP 96402509 A

Priority

FR 9515418 A

Abstract (en)

[origin: EP0780627A1] The method involves using jets of liquid (55a,55b,55c) to clean a tube plate heat exchanger with tubes in a series of flat parallel layers bent into a U-shape. The jets are fed from a position between two layers of tubes in an oscillating motion, with a flow rate of at least 20 l/min and closer to 60 l/min. The cleaner itself comprises a lance (14) which is at least partially supple and has a thickness which is less than the width of the gap between two layers of tubes. It produces liquid jets perpendicular to the pipe layers through nozzles (48a,48b,48c). The body of the lance is made from a plastics material, with a rigid head at one end equipped with an oscillating nozzle carrier.

IPC 1-7 (main, further and additional classification)

F22B 37/48

IPC 8 full level (invention and additional information)

F22B 37/48 (2006.01); F28G 3/16 (2006.01)

CPC (invention and additional information)

F28G 3/16 (2013.01); F22B 37/483 (2013.01)

Designated contracting state (EPC)

BE CH DE ES GB LI SE

EPO simple patent family

EP 0780627 A1 19970625; EP 0780627 B1 20000112; DE 69606156 D1 20000217; DE 69606156 T2 20000824; ES 2143736 T3 20000516; FR 2742858 A1 19970627; FR 2742858 B1 19980306; US 5782255 A 19980721; US 5833767 A 19981110

INPADOC legal status


2007-12-31 [BERE] BE: LAPSED

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- Effective date: 20041130

2006-02-16 [REG ES FD2A] ANNOUNCEMENT OF LAPSE IN SPAIN

- Effective date: 20041122

2005-07-15 [REG CH PL] PATENT CEASED

2005-07-13 [GBPC] GB: EUROPEAN PATENT CEASED THROUGH NON-PAYMENT OF RENEWAL FEE

- Effective date: 20041121

2005-07-05 [EUG] SE: EUROPEAN PATENT HAS LAPSED

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2005-05-31 [BERE] BE: LAPSED

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2002-01-01 [REG GB IF02] EUROPEAN PATENT IN FORCE AS OF 2002-01-01

2001-09-14 [REG CH NV] NEW AGENT

- Representative's name: HUG INTERLIZENZ AG

2001-09-14 [REG CH PUE] ASSIGNMENT

- Owner name: FRAMATOME TRANSFER- FRAMATOME ANP

2001-08-15 [REG GB 732E] AMENDMENTS TO THE REGISTER IN RESPECT OF CHANGES OF NAME OR CHANGES AFFECTING RIGHTS (SECT. 32/1977)

2000-12-27 [26N] NO OPPOSITION FILED

2000-05-16 [REG ES FG2A] DEFINITIVE PROTECTION

- Document: ES 2143736 T3

2000-04-05 [GBT] GB: TRANSLATION OF EP PATENT FILED (GB SECTION 77(6)(A)/1977)

- Effective date: 20000313

2000-02-17 [REF] CORRESPONDS TO:

- Document: DE 69606156 20000217

2000-01-14 [REG CH EP] ENTRY IN THE NATIONAL PHASE

2000-01-12 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: B1

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1998-08-26 [17Q] FIRST EXAMINATION REPORT

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