Constant volume combustion chamber with counter rotating shutter valve

Patent metadata

Field	Value
Publication number	US-11060732-B2
Application number	US-201816651087-A
Country	US
Kind code	B2
Filing date	Sep 13, 2018
Priority date	Sep 27, 2017
Publication date	Jul 13, 2021
Grant date	Jul 13, 2021

Abstract

A constant volume combustion chamber for a turbine engine, includes an intake port, an exhaust port, and a first rotary shutter facing the intake and exhaust ports and configured to rotate around an axis in a first direction of rotation, the first shutter including an aperture intended to cooperate alternately with the intake and exhaust ports during the rotation of the first shutter. The chamber further includes at least one second rotary shutter facing the intake and exhaust ports and configured to rotate around the axis in a second direction of rotation opposite to the first direction, the second shutter including an aperture intended to cooperate alternately with the intake and exhaust ports during the rotation of the second shutter, the first and second shutters being synchronized and configured so that their respective apertures intersect alternately when both are facing the intake and when both are facing exhaust ports.

First claim

The invention claimed is:

1. A constant volume combustion chamber for a turbine engine, the constant volume combustion chamber comprising:
an intake port;
an exhaust port;
a first rotary shutter facing the intake and exhaust ports, the first rotary shutter configured to rotate around an axis of rotation in a first direction of rotation, the first rotary shutter comprising an aperture configured to cooperate alternately with the intake port and the exhaust port during the rotation of the first rotary shutter; and
at least one second rotary shutter facing the intake and exhaust ports, the at least one second rotary shutter configured to rotate around said axis of rotation in a second direction of rotation opposite to the first direction of rotation, said at least one second rotary shutter comprising an aperture configured to cooperate alternately with the intake port and the exhaust port during the rotation of said at least one second rotary shutter, said first rotary shutter and said at least one second rotary shutter being synchronized and configured so that their respective apertures intersect a first time when both apertures are facing the intake port to allow the injection of air into the constant volume combustion chamber through both apertures and a second time when both apertures are facing the exhaust port to allow the discharge of flue gases out of the constant volume combustion chamber through both apertures.

2. The combustion chamber according to claim 1 , wherein the rotary shutters are made of ceramic matrix composite materials.

3. A constant volume combustion system for the turbine engine comprising at least one combustion chamber according to claim 1 .

4. The turbine engine further comprising an axial or centrifugal compressor and an axial or centripetal turbine, the turbine engine further comprising the constant volume combustion system according to claim 3 , the constant volume combustion system being present between the compressor and the turbine.

5. An aircraft comprising at least one turboprop, the at least one turboprop comprising the turbine engine according to claim 4 .

Assignees

• Safran

Inventors

• Metge Pierre Jean-Baptiste
• Leyko Matthieu

Classifications

• F02C3/14

  characterised by the arrangement of the combustion chamber in the plant (combustion chambers per se F23R; F02C3/205 takes precedence) · CPC title

• F23R7/00 Primary

  Intermittent or explosive combustion chambers · CPC title

• F01L7/06

  with disc type valves · CPC title

• F05D2220/323

  for aircraft propulsion, e.g. jet engines · CPC title

• F02C5/12 Primary

  the combustion chambers having inlet or outlet valves, e.g. Holzwarth gas-turbine plants · CPC title