# US 10,865,800 B2 · Bleed valve with regulated opening

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- Number: US 10,865,800 B2
- Document ID: US10865800B2
- Status: Granted
- Kind: B2
- Application number: 16/374,628
- Filed: 2019-04-03
- Published: 2019-10-10
- Granted: 2020-12-15
- Earliest claimed: 2018-04-05
- Assignees: Safran Aircraft Engines
- Applicants: Safran Aircraft Engines
- Inventors: Antoine Marie Georges Caratge
- Web page: https://patentgrep.com/patent/US10865800B2

## CPC

- F02C 6/08: the gas being bled from the gas-turbine compressor
- F01D 17/105: {by passing part of the fluid}
- F02K 3/075: controlling flow ratio between flows
- F04D 19/02: Multi-stage pumps
- F04D 27/0215: {Arrangements therefor, e.g. bleed or by-pass valves}
- F04D 27/0223: {Control schemes therefor}
- F04D 27/023: {Details or means for fluid extraction}
- F02C: GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS (construction of turbines F01D; jet-propulsion plants F02K; construction of compressors or fans F04; generating combustion products of high pressure or high velocity F23R; using gas turbines in compression refrigeration plants F25B11/00)
- F01D: NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES (machines or engines for liquids F03; non-positive displacement pumps F04D)
- F02K: JET-PROPULSION PLANTS (features of jet-propulsion plants common to gas-turbine plants, air intakes or fuel supply control of air-breathing jet-propulsion plants F02C7/00, F02C9/00)
- F04D: NON-POSITIVE-DISPLACEMENT PUMPS (engine fuel-injection pumps F02M; ion pumps H01J41/12; electrodynamic pumps H02K44/02)

## Abstract

Controller, control actuator and bleed valve including a first chamber for the circulation of a discharge air stream when the valve is open and preventing it when the valve is closed, an inner housing, in which a mobile blocking unit is moved between a position for opening and a position for closing the valve, this unit delimiting, in the inner housing, two chambers, the second chamber including a mechanism for returning the blocking unit to the open position, and the third chamber, being used to be in fluidic connection with the control actuator in order to actuate the blocking unit against the return mechanism, the three chambers being isolated in a sealed manner from one another by way of the blocking unit. The device includes a regulation valve.

## Claims

### Claim 1

A device for bleeding an air stream for a turbine engine comprising:
a controller,
a control actuator for distributing air connected to the controller, comprising a body comprising an inner cavity connected to an air inlet port and an air outlet port, and comprising a mobile member arranged in said cavity between a position for opening the air outlet port and a position for closing the air outlet port,
a bleed valve comprising:
a first chamber intended to make the circulation of a bleed air stream possible when the valve is in an open position and to prevent the circulation of the bleed air stream when the valve is in the closed position,
an inner housing in which first mobile blocking means is moved between the open position of the valve and the closed position of the valve, and
an air outlet,
the first blocking means delimiting, in the inner housing, a second chamber and a third chamber, the second chamber, called upper inner chamber, comprising return means for returning the first blocking means into the open position of the valve, and the third chamber, called lower inner chamber, being configured so as to be fluidly connected to the control actuator in order to actuate the first blocking means against the return means, the three chambers being isolated in a sealed manner from one another by way of the first blocking means,
the device being characterized in that it comprises a regulation valve comprising:
an inner space connected to the air outlet port of the control actuator,
a leakage orifice, and
second mobile blocking means between a sealed closing position of said leakage orifice and an adjustable opening position of said leakage orifice, so as to create a determined leakage flow and to consequently adjust the pressure within the inner space.

### Claim 2 (depends on 1)

The device according to claim 1, wherein the second mobile blocking means of the regulation valve is configured to be actuated by electrical means.

### Claim 3 (depends on 2)

The device according to claim 2, wherein the electrical means comprise at least one electrical coil.

### Claim 4 (depends on 3)

The device according to claim 3, configured so that the section of the leakage orifice is directly proportional to a current for activating the coil.

### Claim 5 (depends on 1)

The device according to claim 1, wherein the inner space is connected to the air inlet port of the control actuator via a fluidic connection conduit equipped with a calibrated orifice, so as to limit the air flow of the air inlet port towards the inner space.

### Claim 6 (depends on 1)

The device according to claim 1, wherein the control actuator, the electropneumatic controller and the regulation valve (64) form a single-block unit.

### Claim 7 (depends on 1)

A turbine engine comprising a bleed device according to claim 1.