TURBINE ENGINE ANNULAR COMBUSTION CHAMBER WITH ALTERNATE FIXINGS

Abstract

The invention concerns a turbine engine annular combustion chamber made up of inner (6) and outer (8) longitudinal walls connected upstream by a transverse chamber bottom (10) and comprising a single-piece cowling (12) covering said chamber bottom, the longitudinal walls (6, 8) each being inserted between corresponding flanges (22, 24; 26, 28) of the chamber bottom (10) and of the cowling (12). The longitudinal walls (6, 8), the chamber bottom (10) and the cowling (12) are assembled together by means of a plurality of first fixings (20a; 20b) between the longitudinal walls (6, 8) and the chamber bottom (10) alternating with a plurality of second fixings (20a; 20b) distinct from the first fixings between the longitudinal walls (6, 8) and the cowling (12).

Description

BRIEF DESCRIPTION OF THE DRAWINGS

Other characteristics and advantages of the present invention will emerge from the description given below, with reference to the accompanying drawings which illustrate an example embodiment thereof lacking any limiting nature. In the figures:

FIG. 1 is a view in longitudinal section of a turbine engine combustion chamber according to the invention;

FIG. 2 is a partial view in perspective of the combustion chamber of FIG. 1 before its assembly;

FIG. 3 is a partial view in perspective of the combustion chamber of FIG. 2 after its assembly; and

FIG. 4 is a schematic view of the combustion chamber of FIG. 1 showing the location of the different fixings between the elements comprising it.

Claims

1. Turbine engine annular combustion chamber made up of inner (6) and outer (8) longitudinal walls connected upstream by a transverse chamber bottom (10) and comprising a single-piece cowling (12) covering said chamber bottom, the longitudinal walls (6, 8) each being inserted between corresponding flanges (22, 24; 26, 28) of the chamber bottom (10) and of the cowling (12), characterised in that the longitudinal walls (6, 8), the chamber bottom (10) and the cowling (12) are assembled together by means of a plurality of first fixings (20′) between the longitudinal walls (6, 8) and the chamber bottom (10) alternating with a plurality of second fixings (20″) distinct from the first fixings (20′) between the longitudinal walls (6, 8) and the cowling (12).

2. Chamber according to claim 1, comprising as many first fixings (20′) between the longitudinal walls (6, 8) and the chamber bottom (10) as second fixings (20″) between the longitudinal walls and the cowling (12).

3. Chamber according to one of claims 1 and 2, wherein the first fixings (20′) between the inner longitudinal wall (6) and the chamber bottom (10) are situated opposite the second fixings (20″) between the outer longitudinal wall (8) and the cowling (12), and the second fixings (20″) between the inner longitudinal wall (6) and the cowling (12) are situated opposite the first fixings (20′) between the outer longitudinal wall (8) and the chamber bottom (10).

4. Chamber according to any one of claims 1 to 3, wherein the flanges (22, 24) of the chamber bottom (10) comprise notches (30, 32) made in the region of the second fixings (20″) between the longitudinal walls (6, 8) and the cowling (12).

5. Chamber according to any one of claims 1 to 4, wherein the flanges (26, 28) of the cowling (12) comprise notches (34, 36) made in the region of the first fixings (20′) between the longitudinal walls (6, 8) and the chamber bottom (10).

6. Turbine engine, characterised in that it comprises an annular combustion chamber (4) according to any one of claims 1 to 5.