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The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 12485462 B1

PDFFull Text
Date of Patent:
Dec. 02, 2025

Filed:

Mar. 28, 2022

Opening maching apparatus for heat transfer tube, method of forming opening in tube wall of heat transfer tube using same, and method of removing foreign material through same opening of same heat transfer tube

Applicant:

Doosan Enerbility Co., Ltd, Changwon, KR;

Inventors:

Hyun Sang Kong, Changwon, KR;

Jae Bong Lee, Changwon, KR;

Yoo Yang, Daejeon, KR;

Sang Beom Nam, Daejeon, KR;

Gyeong Hee Nam, Daejeon, KR;

Ho Sung Lee, Daejeon, KR;

Assignee:

DOOSAN ENERBILITY CO., LTD, Changwon, KR;

Attorney:

Harvest IP Law, LLP

Primary Examiner:

Benjamin L Osterhout

Int. Cl.
CPC ...
B08B 9/023 (2006.01); B08B 13/00 (2006.01); B23H 7/26 (2006.01); B23H 7/36 (2006.01); F28G 13/00 (2006.01); B08B 9/027 (2006.01); B08B 9/04 (2006.01); B23H 1/00 (2006.01); F28G 1/16 (2006.01);
U.S. Cl.
CPC ...
B08B 9/023 (2013.01); B08B 13/00 (2013.01); B23H 7/26 (2013.01); B23H 7/36 (2013.01); F28G 13/00 (2013.01); B08B 9/027 (2013.01); B08B 9/04 (2013.01); B08B 2209/02 (2013.01); B23H 1/00 (2013.01); F28G 1/16 (2013.01);
Abstract

The opening machining apparatus for the heat transfer tube includes an electric discharge machining device inserted into the heat transfer tube and configured to form an opening in a tube wall of the heat transfer tube through an electric discharge machining, an electric discharge machining device driving device connected to the electric discharge machining device and configured to transport the electric discharge machining device, an electric discharge machining device driving device connected to the electric discharge machining device and configured to provide force for bringing the electric discharge machining device into contact with a tube wall surface of the heat transfer tube, and an electric discharge machining device rotation device configured to provide force for rotating the electric discharge machining device in a circumferential direction of the heat transfer tube in the heat transfer tube.

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