公开(公告)号：US20220389868A1

公开(公告)日：2022-12-08

申请号：US17770314

申请日：2020-10-20

Applicant: KAWASAKI JUKOGYO KABUSHIKI KAISHA

Inventor： Shinsaku KOMORI ,  Takafumi FUJII ,  Tatsuya OKUWA ,  Hikaru MAESATO

IPC: F02C7/06 ,  F02C6/08 ,  F16N7/32

Abstract: A gas turbine engine includes: a main passage through which compressed air extracted from a compressor is guided to a bearing; and an oil supply device that includes an oil tank storing oil and supplies the oil to the main passage through which the compressed air flows to generate oil mist. The oil supply device includes: a pressure reducer disposed at the main passage; a bypass passage that bypasses the pressure reducer and connects an upstream passage and a downstream passage; a holding chamber disposed at the bypass passage and having a predetermined volume; a switching mechanism that permits or blocks communication between the holding chamber and the oil tank, communication between the holding chamber and the upstream passage, and communication between the holding chamber and the downstream passage; and a controller that controls the switching mechanism.

公开(公告)号：US20230068146A1

公开(公告)日：2023-03-02

申请号：US17799319

申请日：2021-02-12

Applicant: KAWASAKI JUKOGYO KABUSHIKI KAISHA

Inventor： Hikaru MAESATO ,  Takafumi FUJII ,  Tatsuya OKUWA

IPC: F01D25/18 ,  F01D25/16

Abstract: A gas turbine engine according to one aspect of the present invention includes: an oil tank storing lubricating oil; and a cylindrical external case accommodating a compressor, a combustor, and a turbine. The oil tank is arranged along an outer peripheral surface of the external case so as to surround the external case.

公开(公告)号：US20220316396A1

公开(公告)日：2022-10-06

申请号：US17638556

申请日：2020-08-27

Applicant: KAWASAKI JUKOGYO KABUSHIKI KAISHA

Inventor： Tatsuya OKUWA ,  Takafumi FUJII ,  Hayato HIROTA ,  Hikaru MAESATO ,  Atsunori ARAI

IPC: F02C7/06 ,  F02C7/16 ,  F02C9/18

Abstract: A gas turbine engine includes: a fan that is arranged in front of a compressor and rotates in association with a rotating shaft; a casing including an inner shell accommodating the compressor, a combustor, and a turbine, and an outer shell arranged such that a bypass passage through which part of air supplied by the fan flows exists between the inner shell and the outer shell; bearings arranged inside the inner shell; an oil mist generator that is arranged outside the outer shell and generates oil mist by mixing oil with compressed air extracted through an extraction port of the compressor; an air pipe through which the compressed air extracted from the compressor is guided to the oil mist generator; and an oil mist pipe through which the oil mist generated by the oil mist generator is guided to the bearings. At least one of the air pipe and the oil mist pipe includes a heat exchanger that is arranged in the bypass passage and is cooled by the air flowing through the bypass passage.

公开(公告)号：US20220389869A1

公开(公告)日：2022-12-08

申请号：US17770412

申请日：2020-10-20

Applicant: KAWASAKI JUKOGYO KABUSHIKI KAISHA

Inventor： Hiroshi FUJII ,  Takafumi FUJII ,  Tatsuya OKUWA ,  Hikaru MAESATO

IPC: F02C7/06 ,  F01D25/16 ,  F01D25/18

Abstract: Provided is a gas turbine engine including a main passage through which compressed air extracted from a compressor is guided to a bearing; and an oil supply device that supplies oil to the main passage. The oil supply device includes a pressure reducer in the main passage; an oil tank a divider that is movable and divides an internal space of the container into an oil chamber storing the oil and an air chamber; an extruder including a cylinder and a piston that divides an internal space of the cylinder into a first chamber and a second chamber; a switching mechanism that switches between a first state where the first chamber communicates with a low-pressure space whose pressure is lower than pressure in the air chamber and a second state where the first chamber communicates with a high-pressure space whose pressure is higher than pressure in the downstream passage.

公开(公告)号：US20220290607A1

公开(公告)日：2022-09-15

申请号：US17638719

申请日：2020-08-27

Applicant: KAWASAKI JUKOGYO KABUSHIKI KAISHA

Inventor： Takafumi FUJII ,  Hikaru MAESATO ,  Tatsuya OKUWA ,  Shutaro ICHIMURA ,  Hiromasa IKAI

IPC: F02C7/06 ,  F02C7/22

Abstract: A gas turbine engine includes: a casing that accommodates a compressor and the like; bearings; a main lubricator including an oil mist generator that generates oil mist by mixing oil with compressed air extracted from the compressor and a first supply passage through which the oil mist is guided to the bearings; and a starting lubricator including a second supply passage through which a gas flowing out from a gas source is guided to a connection portion of the first supply passage, the connection portion being connected to the second supply passage, and an opener that starts supply of the gas from the gas source. The main lubricator supplies the oil mist to the bearings through the first supply passage by the pressure of the compressed air extracted from the compressor. When the opener starts the supply of the gas, the starting lubricator supplies the oil mist to the bearings by the pressure of the gas flowing out from the gas source.

公开(公告)号：US20210324798A1

公开(公告)日：2021-10-21

申请号：US17273138

申请日：2019-09-03

Applicant: KAWASAKI JUKOGYO KABUSHIKI KAISHA

Inventor： Takafumi FUJII ,  Tatsuya OKUWA

IPC: F02C7/06 ,  F01D25/20

Abstract: An oil supply device of an aircraft gas turbine includes: a lubrication extraction pipe including a first end and a second end, the first end communicating with a compressor of the gas turbine, an ejection port being provided at the second end and directed to a lubricated member; an oil tank configured to store oil; an oil pipe including a first end and a second end, the first end communicating with the oil tank, the second end communicating with the lubrication extraction pipe; and an electric pump interposed on a portion of the oil pipe and configured to suck the oil from the oil tank and supply the oil to an inside of the lubrication extraction pipe.