IPC분류정보
국가/구분 |
United States(US) Patent
등록
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국제특허분류(IPC7판) |
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출원번호 |
US-0427001
(2003-04-29)
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발명자
/ 주소 |
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출원인 / 주소 |
- Honeywell International, Inc.
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대리인 / 주소 |
Loewenstein, Esq. K. Karen
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인용정보 |
피인용 횟수 :
3 인용 특허 :
17 |
초록
▼
A ground-based system and method of supplying temperature-controlled air to an aircraft environmental control system during ground support operations that uses a throttle valve to control the flow of compressed air flowing through a heat exchanger. The heat exchanger, which may be mounted in a wheel
A ground-based system and method of supplying temperature-controlled air to an aircraft environmental control system during ground support operations that uses a throttle valve to control the flow of compressed air flowing through a heat exchanger. The heat exchanger, which may be mounted in a wheeled cart, removes heat from the compressed air supplied to the air conditioning unit and supplies cooled compressed air at a desired temperature. The temperature of the cooled compressed air is controlled by selectively positioning the throttle valve, which regulates compressed air flow from the compressed air source.
대표청구항
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1. A temperature-controlled air supply system for use with a compressed air source and for connection to an aircraft on the ground, the air supply system comprising:a primary air flow passage coupled to receive a flow of primary air;a compressed air flow passage coupled to receive a flow of compress
1. A temperature-controlled air supply system for use with a compressed air source and for connection to an aircraft on the ground, the air supply system comprising:a primary air flow passage coupled to receive a flow of primary air;a compressed air flow passage coupled to receive a flow of compressed air from a compressed air source;a first heat exchanger having at least a first fluid flow path and a second fluid flow path, the first fluid flow path fluidly coupled in series in the primary air flow passage, the second fluid flow path fluidly coupled in series in the compressed air flow passage, the first heat exchanger adapted to transfer beat between the primary air and the compressed air and supply at least conditioned compressed air;a temperature sensor mounted downstream of the first heat exchanger second fluid flow path and operable to supply a temperature signal representative of the conditioned compressed air;a first controller coupled to receive the temperature signal from the temperature sensor and operable, in response thereto, to supply at least a throttle valve control signal; anda throttle valve mounted to the compressed air flow passage, the throttle valve coupled to receive the throttle valve control signal and operable, in response thereto, to selectively move to control compressed air flow rate from the compressed air source, through the first heat exchanger second fluid flow path, to thereby control the conditioned compressed air temperature,wherein, for a given temperature and flow rate of primary air through the primary air flow passage:(i) increasing compressed air flow rate through the first heat exchanger second fluid flow path causes the temperature of the conditioned compressed air sensed by the temperature sensor to increase, and(ii) decreasing compressed air flow rate through the first heat exchanger second fluid flow path causes the temperature of the conditioned compressed air sensed by the, temperature sensor to decrease. 2. The system of claim 1, further comprising:a second controller operable to supply a bypass valve control signal;a bypass flow passage fluidly coupled in parallel with the primary air flow passage; anda bypass valve mounted on the bypass flow passage, the bypass valve coupled to receive the bypass valve control signal and operable, in response thereto, to selectively move to a position to control primary air flow rate through the bypass flow passage, whereby primary air flow rate through the first heat exchanger is controlled to thereby further control conditioned compressed air temperature. 3. The system of claim 1, further comprising:at least one cooling turbine having an air intake port and an air exhaust port;a second heat exchanger coupled to receive the conditioned compressed air from the first heat exchanger and turbine exhaust air from the cooling turbine air exhaust port, and adapted to transfer heat from the conditioned compressed air to the cooled air exhausted from the cooling turbine and supply warmed turbine exhaust air and further conditioned compressed air. 4. The system of claim 3, wherein the cooling turbine air intake is coupled to receive the further conditioned compressed air from the second heat exchanger. 5. The system of claim 4, further comprising:a moisture separator coupled between the second heat exchanger and the cooling turbine air intake. 6. The system of claim 1, further comprising:a fan operable to draw the primary air from a primary air source into the primary air flow passage. 7. The system of claim 6, wherein the fan is further operable to draw primary air into the primary air flow passage. 8. The system of claim 1, wherein the primary air is ambient air. 9. The system of claim 1, wherein the compressed air source is an auxiliary power unit (APU). 10. The system of claim 1, wherein the first controller is further operable to supply a bypass valve control signal, and wherein the system further comprises:a bypass flow passage fluidly coupled i n parallel with the primary air flow passage; anda bypass valve mounted on the bypass flow passage, the bypass valve coupled to receive the bypass valve control signal and operable, in response thereto, to selectively move to a position to control primary air flow rate through the bypass flow passage, whereby primary air flow rate through the first heat exchanger is controlled to thereby further control conditioned compressed air temperature. 11. A method of conditioning compressed air supplied from an aircraft ground support equipment, the method comprising:supplying a flow of compressed air through a first heat flow path in a heat exchanger;supplying a flow of primary air through a second flow path in the heat exchanger to thereby condition the compressed air to a temperature;sensing the temperature of the of the conditioned compressed air; andthrottling the flow of compressed air through the first heat exchanger flow path, based at least in part on the sensed temperature, to thereby control the temperature of the conditioned compressed air exiting the heat exchanger;wherein for a given temperature and flow rate of primary air through the second heat exchanger flow path:(i) increasing the flow of compressed air through the first heat exchanger flow path causes the sensed temperature of the conditioned compressed air to increase, and(ii) decreasing the flow of compressed air through the first heat exchanger flow path causes the sensed temperature of the conditioned compressed air to decrease. 12. The method of claim 11, further comprising:selectively diverting a portion of the primary air away from the second heat exchanger flow path to control primary air flow rate through the second heat exchanger flow path, whereby the temperature of the conditioned compressed air exiting the heat exchanger is further controlled. 13. The method of claim 11, further comprising:flowing the conditioned compressed air through a second heat exchanger; andflowing cooling turbine exhaust air through the second heat exchanger to thereby further cool the cooled compressed air and warm the turbine exhaust air. 14. The method of claim 13, further comprising:supplying the warmed turbine exhaust air as the temperature-controlled air to the aircraft. 15. The method of claim 13, further comprising:flowing the further cooled compressed air into an air intake of the cooling turbine. 16. The method of claim 11, further comprising:supplying the compressed air from an auxiliary power unit (APU). 17. The method of claim 11, further comprising:supplying the primary air from ambient surroundings. 18. A temperature-controlled air supply system for use with a compressed air source and for connection to an aircraft on the ground, the air supply system comprising:a primary air flow passage coupled to receive a flow of primary air;a bypass flow passage fluidly coupled in parallel with the primary air flow passage;a first heat exchanger having at least a first fluid flow path and a second fluid flow path, the first fluid flow path fluidly coupled in series in the primary air flow passage, the second fluid flow path coupled to receive a flow of compressed air from the compressed air source, the first heat exchanger adapted to transfer heat between the primary air and the compressed air and supply at least conditioned compressed air;a temperature sensor mounted downstream of the first heat exchanger second fluid flow path and operable to supply a temperature signal representative of the conditioned compressed air;a controller coupled to receive the temperature signal from the temperature sensor and operable, in response thereto, to supply at least a throttle valve control signal and a bypass valve control signal;a throttle valve mounted on the compressed air flow passage, the throttle valve coupled to receive the throttle valve control signal and operable, in response thereto, to selectively move to a position to control compressed air flow rate from the compressed air source, and through the first heat exchanger second flow path; anda bypass valve mounted on the bypass flow passage, the bypass valve coupled to receive the bypass valve control signal and operable, in response thereto, to selectively move to a position to control primary air flow rate through the bypass flow passage, whereby primary air flow rate through the first heat exchanger is controlledwherein for a given temperature and flow rate of primary air through the primary air flow passage;(i) increasing compressed air flow rate through the first heat exchanger second fluid flow path causes the temperature of the conditioned compressed air sensed by the temperature sensor to increase and(ii) decreasing compressed air flow rate through the first heat exchanger second fluid flow path causes the temperature of the conditioned compressed air sensed by the temperature sensor to decrease.
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