# US 10,870,490 B2 · Energy flow

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- Number: US 10,870,490 B2
- Document ID: US10870490B2
- Status: Granted
- Kind: B2
- Application number: 15/604,526
- Filed: 2017-05-24
- Published: 2017-11-30
- Granted: 2020-12-22
- Earliest claimed: 2016-05-26
- Assignees: Hamilton Sunstrand Corporation
- Applicants: Hamilton Sundstrand Corporation
- Inventors: Louis J. Bruno; Harold W. Hipsky
- Web page: https://patentgrep.com/patent/US10870490B2

## CPC

- B64D 13/02: the air being pressurised
- B64D 13/06: the air being conditioned (pressurising B64D13/02)
- F02C 1/02: the working fluid being an unheated pressurised gas
- F02C 6/08: the gas being bled from the gas-turbine compressor
- B64D 2013/0618: {with arrangements for reducing or managing bleed air, using another air source, e.g. ram air}
- B64D 2013/0648: {with energy recovery means, e.g. using turbines}
- F05D 2220/323: for aircraft propulsion, e.g. jet engines
- F05D 2220/62: with energy recovery turbines
- Y02T 50/50: On board measures aiming to increase energy efficiency
- B64D: EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENT OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT
- 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)
- F05D: INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- Y02T: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION

## Abstract

An airplane is provided. The airplane includes a compressing device including a turbine and a compressor. The turbine includes first and second inlets and provides energy by expanding one or more mediums. The first inlet is receives a first medium of the one or more mediums. The second inlet receives a second medium of the one or more mediums. The compressor receives a first energy derived from the first and second mediums being expanded across the turbine during a first mode of the compressing device, receives a second energy derived from the first medium being expanded across the turbine during a second mode of the compressing device, and compresses the second medium in accordance with the first mode or the second mode.

## Claims

### Claim 1

A compressing device, comprising:
a turbine comprising a first inlet and a second inlet and configured to provide energy by expanding one or more mediums,
wherein the first inlet is configured to receive a first medium of the one or more mediums, and
wherein the second inlet is configured to receive a second medium of the one or more mediums;
a compressor configured to:
receive a first energy derived from the first and second mediums being expanded across the turbine during a first mode of the compressing device,
receive a second energy derived from the first medium being expanded across the turbine during a second mode of the compressing device, and
compress the second medium in accordance with the first mode or the second mode;
a fan configured to receive the first energy during the first mode and the second energy during the second mode; and
a power turbine configured to provide a third energy by expanding a third medium of the one or more mediums in accordance with the first mode or the second mode,
wherein the compressor is configured to receive the third energy as a power assist from the third medium expanded across the power turbine;
wherein the first medium and the second medium are mixed at the turbine during the first mode at a first mixing point, and wherein the first medium and the second medium are mixed downstream of the turbine during the second mode at a second mixing point.

### Claim 2 (depends on 1)

The compressing device of claim 1, wherein the first medium and the second medium are mixed at the turbine during the first mode.

### Claim 3 (depends on 1)

The compressing device of claim 1, wherein the first medium and the second medium are mixed downstream of the turbine during the second mode.

### Claim 4 (depends on 1)

The compressing device of claim 1, wherein the first medium is bleed air and the second medium is fresh air.

### Claim 5 (depends on 1)

An environmental control system of an aircraft comprising the compressing device of claim 1.

### Claim 6 (depends on 1)

The compressing device of claim 1, comprising:
a valve controlling whether a flow of the third medium bypasses the power turbine in accordance with the first mode or second mode.