Preconditioned air unit with variable frequency driving
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
F25B-001/00
F25D-015/00
F25D-019/00
F25D-017/02
B64F-001/36
출원번호
US-0257669
(2010-03-18)
등록번호
US-9771169
(2017-09-26)
우선권정보
DK-2009 00392 (2009-03-20)
국제출원번호
PCT/IB2010/051189
(2010-03-18)
§371/§102 date
20110920
(20110920)
국제공개번호
WO2010/106520
(2010-09-23)
발명자
/ 주소
Dahl, Soren Risgaard
Nielsen, Bo Vork
Olsson, Henrik
Schroder, Lars
출원인 / 주소
AXA POWER APS
대리인 / 주소
Hauptman Ham, LLP
인용정보
피인용 횟수 :
0인용 특허 :
12
초록▼
A preconditioned air unit for supplying preconditioned air to an aircraft parked on the ground, the preconditioned air unit comprising a housing accommodating a flow duct with an air inlet for ambient air and an air outlet for connection to the parked aircraft, a blower connected with the flow duct
A preconditioned air unit for supplying preconditioned air to an aircraft parked on the ground, the preconditioned air unit comprising a housing accommodating a flow duct with an air inlet for ambient air and an air outlet for connection to the parked aircraft, a blower connected with the flow duct for generation of an air flow from the air inlet toward the air outlet, at least one refrigeration system, each of which includes at least one compressor, at least one condenser, at least one expansion valve, and at least one evaporator connected in a flow circuit containing a refrigerant, and wherein the at least one evaporator interacts with the air flow in the flow duct, and at least one variable frequency driver for power supply of at least one of the at least one compressor of the at least one refrigeration system.
대표청구항▼
1. A preconditioned air unit for supplying preconditioned air to an aircraft parked on the ground, the preconditioned air unit comprising a housing accommodating a flow duct with an air inlet for ambient air and an air outlet for connection to the parked aircraft, a blower connected with the flow du
1. A preconditioned air unit for supplying preconditioned air to an aircraft parked on the ground, the preconditioned air unit comprising a housing accommodating a flow duct with an air inlet for ambient air and an air outlet for connection to the parked aircraft, a blower connected with the flow duct for generation of an air flow from the air inlet toward the air outlet, a plurality of refrigeration systems, each of which includesat least one compressor,at least one condenser,at least one expansion valve,at least one evaporator connected in a flow circuit containing a refrigerant, and wherein the at least one evaporator interacts with the air flow in the flow duct, andat least one variable frequency driver for power supply of the at least one compressor, and a central controller that is configured for controlling the operation of the preconditioned air unit including variable frequency drivers of the plurality of refrigeration systems,wherein the central controller has a power sharing control input for control of the preconditioned air unit power consumption. 2. A preconditioned air unit for supplying preconditioned air to an aircraft parked on the ground, the preconditioned air unit comprising a housing accommodating a flow duct with an air inlet for ambient air and an air outlet for connection to the parked aircraft,a blower connected with the flow duct for generation of an air flow from the air inlet toward the air outlet,a plurality of refrigeration systems, each of which includes at least one compressor,at least one condenser,at least one expansion valve,at least one evaporator connected in a flow circuit containing a refrigerant, and wherein the at least one evaporator interacts with the air flow in the flow duct, andat least one variable frequency driver for power supply of the at least one compressor, anda central controller that is configured for controlling the operation of the preconditioned air unit including variable frequency drivers of the plurality of refrigeration systems, wherein the central controller automatically adjusts the cooling performed by the preconditioned air unit according to at least one of: the selected type of aircraft, the ambient temperature, the humidity, the cabin temperature, or the outgoing airflow from the preconditioned air unit. 3. A preconditioned air unit according to claim 2, wherein the housing further accommodates at least one condenser fan positioned for generation of an airflow interacting with at least one of the condensers of the plurality of refrigeration systems. 4. A preconditioned air unit according to claim 2, wherein the housing further accommodates at least one variable frequency driver connected for power supply of at least one condenser fan for generation of an airflow interacting with at least one of the condensers of the plurality of refrigeration systems. 5. A preconditioned air unit according to claim 2, wherein the housing further accommodates a variable frequency driver connected for electrical power supply of the blower. 6. A preconditioned air unit according to claim 2, wherein at least one variable frequency driver has a controller that is configured for variation of the output frequency of the at least one variable frequency driver. 7. A preconditioned air unit according to claim 6, wherein the controller is configured for variation of the output frequency of the at least one variable frequency driver above the frequency of the mains supply of the preconditioned air unit. 8. A preconditioned air unit according to claim 6, wherein the controller is configured for variation of the output frequency of the at least one variable frequency driver above the frequency of the mains supply of the preconditioned air unit. 9. A preconditioned air unit according to claim 2, wherein the housing further accommodates a rectifier connected to a mains supply input of the air unit for generation of a power DC voltage supply. 10. A preconditioned air unit according to claim 9, wherein the rectifier is selected from the group consisting of a 12-pulse rectifier, an 18-pulse rectifier, and a 24-pulse rectifier. 11. A preconditioned air unit according to claim 2, further comprising at least one of: a user interface panel with input keys and a display, a remote control, a computer interface, a network interface, or a loudspeaker. 12. A preconditioned air unit according to claim 2, further comprising a heater in the flow duct. 13. A preconditioned air unit according to claim 2, wherein the central controller has a power sharing control input for control of the preconditioned air unit power consumption. 14. A preconditioned air unit according to claim 2, wherein each refrigeration system of the plurality of refrigeration systems is configured for failure detection so that, in the event that one of the refrigeration systems fails, the failing refrigeration system transmits a failure signal to the central controller. 15. A preconditioned air unit according to claim 2, wherein: at least one variable frequency driver has a controller that is configured for variation of the output frequency of the at least one variable frequency driver;the controller is configured for variation of the output frequency of the at least one variable frequency driver above the frequency of the mains supply of the preconditioned air unit;at least one variable frequency driver is configured to keep the ratio between the output voltage and the frequency substantially constant;each refrigeration system of the plurality of refrigeration systems is configured for failure detection so that, in the event that one of the refrigeration systems fails, the failing refrigeration system transmits a failure signal to the central controller; andthe central controller is further configured to automatically adjust the required amount of cooling among the remaining properly operating refrigeration systems of the plurality of refrigeration systems in response to the failure signal. 16. A preconditioned air unit for supplying preconditioned air to an aircraft parked on the ground, the preconditioned air unit comprising a housing accommodating a flow duct with an air inlet for ambient air and an air outlet for connection to the parked aircraft,a blower connected with the flow duct for generation of an air flow from the air inlet toward the air outlet,a plurality of refrigeration systems, each of which includes at least one compressor,at least one condenser,at least one expansion valve,at least one evaporator connected in a flow circuit containing a refrigerant, and wherein the at least one evaporator interacts with the air flow in the flow duct, andat least one variable frequency driver for power supply of the at least one compressor, anda central controller that is configured for controlling the operation of the preconditioned air unit including variable frequency drivers of the plurality of refrigeration systems, wherein each refrigeration system of the plurality of refrigeration systems is configured for failure detection so that, in the event that one of the refrigeration systems fails, the failing refrigeration system transmits a failure signal to the central controller. 17. A preconditioned air unit according to claim 16, wherein the central controller is further configured to automatically adjust the required amount of cooling among the remaining properly operating refrigeration systems of the plurality of refrigeration systems in response to the failure signal. 18. A preconditioned air unit according to claim 16, wherein at least one variable frequency driver has a controller that is configured for variation of the output frequency of the at least one variable frequency driver. 19. A preconditioned air unit according to claim 18, wherein the controller of the variable frequency driver is further configured for adjustment of the output frequency in response to a sensor output connected to the controller. 20. A preconditioned air unit according to claim 18, wherein the central controller is connected to at least one controller of at least one voltage frequency driver. 21. A preconditioned air unit according to claim 16, wherein at least one variable frequency driver keeps the ratio between the output voltage and the frequency substantially constant to maintain a high motor torque throughout the entire output frequency range. 22. A preconditioned air unit according to claim 16, wherein the central controller is further configured to automatically adjust the required amount of cooling among the remaining properly operating refrigeration systems of the plurality of refrigeration systems in response to the failure signal.
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이 특허에 인용된 특허 (12)
Kobayashi Takehiro (Fuji JPX), Air conditioning system having a control unit for fine adjustment of inverter input current.
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