Injector device for an engine device, engine device, and air- and/or spacecraft

Patent metadata

Field	Value
Publication number	US-11906166-B2
Application number	US-202117450897-A
Country	US
Kind code	B2
Filing date	Oct 14, 2021
Priority date	Apr 15, 2019
Publication date	Feb 20, 2024
Grant date	Feb 20, 2024

Abstract

An injector device for an engine device for introducing a fluidic, in particular a liquid, fuel and a fluid, in particular liquid, oxidizing agent into a combustion chamber of the engine device is provided. The injector device defines a longitudinal axis and comprises at least one first injection element, which is configured in the form of a first fluid channel for fluidically connecting a first collection space for the fluidic oxidizing agent and the combustion chamber, and at least one second injection element, which is configured in the form of a second fluid channel for fluidically connecting a second collection space for the fluidic fuel and the combustion chamber. At least one first resonator element is associated with the at least one first injection element and/or at least one second resonator element is associated with the at least one second injection element.

First claim

What is claimed is:

1. An injector device for an engine device for introducing a fluidic fuel and a fluidic oxidizing agent into a combustion chamber of the engine device, which injector device defines a longitudinal axis and comprises at least one first injection element, which is configured in the form of a first fluid channel for fluidically connecting a first collection space for the fluidic oxidizing agent and the combustion chamber, and at least one second injection element, which is configured in the form of a second fluid channel for fluidically connecting a second collection space for the fluidic fuel and the combustion chamber,
wherein at least one of at least one first resonator element is associated with the at least one first injection element and at least one second resonator element is associated with the at least one second injection element, and
wherein at least one of the at least one first resonator element is adapted to an eigenfrequency of the associated at least one first injection element and the at least one second resonator element is adapted to an eigenfrequency of the associated at least one second injection element,
wherein at least one of:
the at least one first resonator element and the first collection space are fluidically connected to one another by way of a first flushing channel, so that the fluid flowing through the at least one first injection element also flows at a flow speed through the at least one first resonator element, thereby ensuring that the same conditions prevail in the at least one first resonator element at any one time as in the at least one first injection element to be dampened, and
the at least one second resonator element and the second collection space are fluidically connected to one another by way of a second flushing channel, so that the fluid flowing through the at least one second injection element also flows at a flow speed through the at least one second resonator element, thereby ensuring that the same conditions prevail in the at least one second resonator element at any one time as in the at least one second injection element to be dampened.

2. The injector device in accordance with claim 1 , wherein at least one of:
a) the at least one of the at least one first resonator element is fluidically connected to the at least one first injection element,
the at least one second resonator element is fluidically connected to the at least one second injection element,

and
b) at least one of the at least one first resonator element comprises a first resonator cavity, which defines a first resonator volume, and wherein a first resonator channel fluidically connects the at least one first injection element and the first resonator cavity, and
the at least one second resonator element comprises a second resonator cavity, which defines a second resonator volume, and wherein a second resonator channel fluidically connects the at least one second injection element and the second resonator cavity.

3. The injector device in accordance with claim 1 , wherein at least one of:
a) the at least one first injection element defines a first injection element longitudinal axis, and
b) the at least one second injection element defines a second injection element longitudinal axis.

4. The injector device in accordance with claim 1 , wherein at least one of:
a) at least one of the at least one first resonator element defines a first resonator element longitudinal axis and the at least one second resonator element defines a second resonator element longitudinal axis,

and
b) the at least one first injection element and the at least one second injection element are arranged or formed coaxially to one another.

5. The injector device in accordance with claim 1 , wherein at least one of:
a) at least one of the at least one first flushing channel defines a first flushing channel longitudinal axis, and
the at least one second flushing channel defines a second flushing channel longitudinal axis,

and
b) at least one of a first flushing channel cross-sectional area defined by the at least one first flushing channel is smaller than a first resonator channel cross-sectional area defined by the first resonator channel, and
a second flushing channel cross-sectional area defined by the at least one second flushing channel is smaller than a second resonator channel cross-sectional area defined by the second resonator channel.

6. The injector device in accordance claim 1 , wherein at least one of:
a) at least one of the at least one first resonator element and the at least one second resonator element is configured in the form of a Helmholtz resonator or in the form of a λ/4 resonator,

and
b) at least one of the at least one first resonator element is associated with at least one first injection element and the at least one second resonator element is associated with at least one second injection element.

7. The injector device in accordance with claim 1 , wherein the injector device comprises at least one of a plurality of first injection elements and a plurality of second injection elements.

8. The injector device in accordance with claim 1 , wherein at least one of:
a) the at least one first resonator element is arranged or formed in the region of an inlet of the at least one first injection element facing in the direction toward the first collection space,

and
b) the at least one second resonator element is arranged or formed in the region of an inlet of the at least one second injection element facing in the direction toward the second collection space.

9. The injector device in accordance with claim 1 , wherein the injector device comprises a first injector plate and a second injector plate, wherein at least one of:
a) the at least one first resonator elements are arranged or formed in the first injector plate,

and
b) the at least one second resonator elements are arranged or formed in the second injector plate.

10. The injector device in accordance with claim 9 , wherein at least one of:
a) the first injector plate and the second injector plate are arranged or formed in parallel to one another,

and
b) the second collection space is arranged or formed between the first injector plate and the second injector plate,

and
c) the first injector plate is configured in the form of a throttle plate and wherein a first throttle element is associated with the at least one first injection element in the region of the inlet thereof, said throttle element defining a smaller flow cross section than the at least one first injection element, and wherein the first throttle element is arranged or formed in or on the throttle plate.

11. The injector device in accordance with claim 1 , wherein the at least one first injection element is arranged on a plate-shaped injector element holder and is configured in the form of an injector sleeve.

12. The injector device in accordance with claim 11 , wherein the injector element holder on the one hand abuts in surface-to-surface contact against the first injector plate and on the other hand delimits the second collection space.

13. The injector device in accordance with claim 1 , wherein the at least one second injection element is arranged or formed on or in an injection head.

14. The injector device in accordance with claim 1 , wherein the at least one second injection element tapers in cross section in a single stage to form a second throttle element.

15. An engine device for at least one of an aircraft and a spacecraft, which engine device comprises a combustion chamb

Assignees

• Deutsch Zentr Luft & Raumfahrt
• Deutsches Zentrum Fuer Luft Und Koeln Raumfahrt E V

Inventors

• Armbruster Wolfgang
• Hardi Justin
• Oschwald Michael
• Miene Yannik
• Suslov Dmitry

Classifications

• F23R3/28 Primary

  characterised by the fuel supply (burners F23D) · CPC title

• F02K9/52

  Injectors · CPC title

• F02K9/72

  using liquid and solid propellants, i.e. hybrid rocket-engine plants · CPC title

• F05D2260/963

  by Helmholtz resonators · CPC title

• F05D2260/964

  counteracting thermoacoustic noise · CPC title