Combustion chamber for gas turbine engines

Claim 2

Combustion chamber for gas turbine engines having a compressor, comprising a flame tube provided with metering openings for introduction of secondary air into the flame tube, metering means for selectively varying the opening of said metering openings to control the amount of secondary air permitted to enter said flame tube through said metering openings, a heat exchanger connected between said compressor and said combustion chamber, and control means responsive to a relationship between the air temperature upstream of said heat exchanger and the air temperature of the combustion chamber for actuating said metering means to adjust said metering openings.

Claim 3

Combustion chamber as defined in claim 1, wherein said control means is responsive to the difference between the air temperature upstream of said heat exchanger and the air temperature of the combustion chamber.

Claim 4

Combustion chamber as defined in claim 1, wherein said control means is responsive to the ratio of the air temperature upstream of said heat exchanger and the air temperature of the combustion chamber.

Claim 5

Combustion chamber for gas turbine engines having a compressor, comprising a flame tube provided with metering openings for introduction of secondary air into the flame tube, metering means for selectively varying the opening of said metering openings to control the amount of secondary air permitted to enter said flame tube through said metering openings, and control means for actuating said metering means to adjust said metering openings, said metering means including a throttle ring arranged around said flame tube and being movable to selectively open and close said metering openings, wherein said control means includes an actuating element connected to said throttle ring in the form of a spring-loaded piston and means for displacing said piston.

Claim 6

Combustion chamber for gas turbine engines having a compressor, comprising a flame tube provided with metering openings for introduction of secondary air into the flame tube, metering means for selectively varying the opening of said metering openings to control the amount of secondary air permitted to enter said flame tube through said metering openings, and control means for actuating said metering means to adjust said metering openings, said metering means including a throttle ring arranged around said flame tube and being movable to selectively open and close said metering openings, wherein said control means includes an actuating element connected to said throttle ring in the form of a spring-loaded piston and means for displacing said piston.

Claim 7

Combustion chamber for gas turbine engines having a compressor, comprising a flame tube provided with metering openings for introduction of secondary air into the flame tube, metering means for selectively varying the opening of said metering openings to control the amount of secondary air permitted to enter said flame tube through said metering openings, and control means for actuating said metering means to adjust said metering openings, said metering means including a throttle ring arranged around said flame tube and being movable to selectively open and close said metering openings, wherein said control means includes an actuating element connected to said throttle ring and a temperature sensitive element connected to said actuating element and positioned in the stream of intake air flowing to said flame tube displacing said actuating element with changes in air temperature.

Claim 8

Combustion chamber for gas turbine engines having a compressor, comprising a flame tube provided with metering openings for introduction of secondary air into the flame tube, metering means for selectively varying the opening of said metering openings to control the amount of secondary air permitted to enter said flame tube through said metering openings, and control means for actuating said metering means to adjust said metering openings, said metering means including a throttle ring arranged around said flame tube and being movable to selectively open and close said metering openings, wherein said control means includes an actuating element connected to said throttle ring and a temperature sensitive element connected to said actuating element and positioned in the stream of intake air flowing to said flame tube displacing said actuating element with changes in air temperature.

Claim 9

Combustion chamber for gas turbine engines having a compressor, comprising a flame tube of annular configuration provided with metering openings for introduction of secondary air into the flame tube, metering means for selectively varying the opening of said metering openings to control the amount of secondary air permitted to enter said flame tube through said metering openings, separate ducts for the introduction of secondary air to said metering openings, and control means for actuating said metering means to adjust said metering openings including temperature sensors positioned in said separate ducts.

Claim 10

Combustion chamber for gas turbine engines having a compressor, comprising a flame tube of annular configuration provided with metering openings for introduction of secondary air into the flame tube, metering means for selectively varying the opening of said metering openings to control the amount of secondary air permitted to enter said flame tube through said metering openings, separate ducts for the introduction of secondary air to said metering openings, and control means for actuating said metering means to adjust said metering openings including temperature sensors positioned in said separate ducts.

Claim 11

Combustion chamber as defined in claim 6, wherein said control means includes actuating means for effecting axial movement of said throttle ring.

Claim 12

Combustion chamber as defined in claim 6, wherein said control means includes actuating means for effecting circumferential movement of said throttle ring.

Claim 13

A combustion chamber according to claim 4, wherein said means for displacing said piston includes means communicating the compressor delivery pressure directly with said piston.

Claim 14

A combustion chamber for gas turbine engines of the type having a compressor, comprising a flame tube provided with metering openings for introducing secondary air into the flame tube, metering means for selectively varying the effective area of said metering openings to meter the amount of secondary air permitted to entEr said flame tube, and control means responsive to one of the compressor delivery pressure and the combustion chamber inlet temperature for controlling said metering means, wherein said combustion chamber inlet temperature is sensed by temperature sensing means having air temperature responsive elements, and wherein said temperature sensing means are disposed in combustion air supply passage means leading to said flame tube in such a manner that all of said temperature responsive elements are spaced from external walls of said flame tube which form a combustion space in said flame tube.

Claim 15

A combustion chamber for gas turbine engines of the type having a compressor, comprising a flame tube provided with metering openings for introducing secondary air into the flame tube, metering means for selectively varying the effective area of said metering openings to meter the amount of secondary air permitted to entEr said flame tube, and control means responsive to one of the compressor delivery pressure and the combustion chamber inlet temperature for controlling said metering means, wherein said combustion chamber inlet temperature is sensed by temperature sensing means having air temperature responsive elements, and wherein said temperature sensing means are disposed in combustion air supply passage means leading to said flame tube in such a manner that all of said temperature responsive elements are spaced from external walls of said flame tube which form a combustion space in said flame tube.

Claim 16

A combustion chamber according to claim 10, wherein primary air openings are provided in said flame tube upstream of said metering openings with respect to said flow of air in said flame tube.

Claim 17

Combustion chamber according to claim 10, wherein said control means is directly responsive to said combustion chamber inlet temperature for controlling said metering means.

Claim 18

Combustion chamber according to claim 10, wherein said control means is directly responsive to said compressor delivery pressure for controlling said metering means.

Claim 19

A combustion chamber for gas turbine engines of the type having a compressor, comprising a flame tube provided with metering openings for introducing secondary air into the flame tube, metering means for selectively varying the effective area of said metering openings to meter the amount of secondary air permitted to enter said flame tube, control means responsive to one of the compressor delivery pressure and the combustion chamber inlet temperature for controlling said metering means, a fuel nozzle adjacent one end of said flame tube for supplying fuel to the interior of said flame tube, and an outer casing surrounding said flame tube with a space therebetween, wherein combustion air is conducted from the outlet of said compressor to a position in the interior of said flame tube adjacent said fuel nozzle by way of said space between said outer casing and flame tube, and wherein said metering openings communicate directly with said space at a position upstream of said fuel nozzle with respect to the flow in said space and downstream of said fuel nozzle with respect to the flow in said flame tube.

Claim 20

A combustion chamber for gas turbine engines of the type having a compressor, comprising a flame tube provided with metering openings for introducing secondary air into the flame tube, metering means for selectively varying the effective area of said metering openings to meter the amount of secondary air permitted to enter said flame tube, control means responsive to one of the compressor delivery pressure and the combustion chamber inlet temperature for controlling said metering means, a fuel nozzle adjacent one end of said flame tube for supplying fuel to the interior of said flame tube, and an outer casing surrounding said flame tube with a space therebetween, wherein combustion air is conducted from the outlet of said compressor to a position in the interior of said flame tube adjacent said fuel nozzle by way of said space between said outer casing and flame tube, and wherein said metering openings communicate directly with said space at a position upstream of said fuel nozzle with respect to the flow in said space and downstream of said fuel nozzle with respect to the flow in said flame tube.

Claim 21

Combustion chamber according to claim 14, wherein said control means is directly responsive to the temperature of the air in said space at a position upstream of said metering openings with respect to the flow in said space.

Claim 22

Combustion chamber according to claim 14, wherein said control means is directly responsive to said compressor delivery pressure for controlling said metering means.

Claim 23

Combustion chamber according to claim 15, further comprising a heat exchanger positioned between said compressor and said space.

Claim 24

Combustion chamber according to claim 17, wherein said control means is responsive to a relationship between the air temperature upstream of said heat exchanger and the air temperature of the combustion chamber for controlling said metering means.

Claim 25

Combustion chamber according to claim 14, wherein said metering means includes a throttle ring arranged around said flame tube and which is movable to selectively open and close said metering openings.

Claim 26

Combustion chamber according to claim 19, said control means including actuating means for effecting axial movement of said throttle ring.

Claim 27

Combustion chamber according to claim 19, wherein said control means includes actuating means for effecting circumferential movement of said throttle ring.

Claim 28

Combustion chamber according to claim 19, wherein said control means includes an actuating element connected to said throttle ring in the form of a spring-loaded piston and means for displacing said piston.

Claim 29

Combustion chamber according to claim 19, wherein said control means includes an actuating element connected to said throttle ring and a temperature sensitive element connected to said actuating element and positioned in the stream of iNtake air flowing to said flame tube for displacing said actuating element with changes in air temperature.

Claim 30

Combustion chamber according to claim 10, wherein said metering means includes a throttle ring arranged around said flame tube and which is movable to selectively open and close said metering openings.

Claim 31

Combustion chamber according to claim 24, wherein said control means includes actuating means for effecting axial movement of said throttle ring.

Claim 32

Combustion engine according to claim 24, wherein said control means includes actuating means for effecting circumferential movement of said throttle ring.

Claim 33

A combustion chamber for gas turbine engines of the type having a compressor, comprising a flame tube provided with metering openings for introducing secondary air into the flame tube, metering means for selectively varying the effective area of said metering openings to meter the amount of secondary air permitted to enter said flame tube, and control means responsive to one of the compressor delivery pressure and the combustion chamber inlet temperature for controlling said metering means, wherein said metering means includes a throttle ring arranged around said flame tube and which is movable to selectively open and close said metering openings, wherein said control means includes an actuating element connected to said throttle ring in the form of a spring-loaded piston and means for displacing said piston.

Claim 34

A combustion chamber for gas turbine engines of the type having a compressor, comprising a flame tube provided with metering openings for introducing secondary air into the flame tube, metering means for selectively varying the effective area of said metering openings to meter the amount of secondary air permitted to enter said flame tube, and control means responsive to one of the compressor delivery pressure and the combustion chamber inlet temperature for controlling said metering means, wherein said metering means includes a throttle ring arranged around said flame tube and which is movable to selectively open and close said metering openings, wherein said control means includes an actuating element connected to said throttle ring in the form of a spring-loaded piston and means for displacing said piston.

Claim 35

A combustion chamber for gas turbine engines of the type having a compressor, comprising a flame tube provided with metering openings for introducing secondary air into the flame tube, metering means for selectively varying the effective area of said metering openings to meter the amount of secondary air permitted to enter said flame tube, and control means responsive to one of the compressor delivery pressure and the combustion chamber inlet temperature for controlling said metering means, wherein said metering means includes a throttle ring arranged around said flame tube and which is movable to selectively open and close said metering openings, wherein said control means includes an actuating element connected to said throttle ring and a temperature sensitive element connected to said actuating element and positioned in the stream of intake air flowing to said flame tube for displacing said actuating element with changes in air temperature.

Claim 36

A combustion chamber for gas turbine engines of the type having a compressor, comprising a flame tube provided with metering openings for introducing secondary air into the flame tube, metering means for selectively varying the effective area of said metering openings to meter the amount of secondary air permitted to enter said flame tube, and control means responsive to one of the compressor delivery pressure and the combustion chamber inlet temperature for controlling said metering means, wherein said metering means includes a throttle ring arranged around said flame tube and which is movable to selectively open and close said metering openings, wherein said control means includes an actuating element connected to said throttle ring and a temperature sensitive element connected to said actuating element and positioned in the stream of intake air flowing to said flame tube for displacing said actuating element with changes in air temperature.

Claim 37

Combustion chamber as defined in claim 6, wherein said metering means includes a throttle ring arranged around said flame tube which is movable to selectively open and close said metering openings, and wherein said control means includes actuating means for effecting axial movement of said throttle ring.

Claim 38

Combustion chamber as defined in claim 6, wherein said metering means includes a throttle ring arranged around said flame tube which is movable to selectively open and close said metering openings, and wherein said control means includes actuating means for effecting circumferential movement of said throttle ring.