IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0451348
(2001-12-20)
|
우선권정보 |
SE-0004841 (2000-12-22) |
국제출원번호 |
PCT//SE01/02834
(2003-06-18)
|
§371/§102 date |
20030618
(20030618)
|
국제공개번호 |
WO02//05212
(2002-07-04)
|
발명자
/ 주소 |
|
출원인 / 주소 |
|
대리인 / 주소 |
Frishauf, Holtz, Goodman &
|
인용정보 |
피인용 횟수 :
2 인용 특허 :
2 |
초록
▼
A speed governor for a pneumatic rotation motor having a pressure air inlet passage (15, 15′), an inlet valve (16; 56) including a flow controlling valve element (18; 58) located in the inlet passage (15, 15′), and a speed responsive activating device (24; 54) operatively connected to the inlet valv
A speed governor for a pneumatic rotation motor having a pressure air inlet passage (15, 15′), an inlet valve (16; 56) including a flow controlling valve element (18; 58) located in the inlet passage (15, 15′), and a speed responsive activating device (24; 54) operatively connected to the inlet valve (16; 56), wherein the activating device (24, 54) comprises a pilot circuit with an activating surface (20; 70) on the valve element (18; 58), a restricted air supply opening (21, 72) communicating with the activating surface (20; 70), a bleed-off valve (24; 54) which communicates with the activating surface (20; 70) and which comprises an electromagnet actuator (27; 76), and a generator (30) driven by the motor and delivering to the actuator (27; 76) a voltage of a magnitude responsive to the actual motor speed to thereby make the bleed-off valve (24; 54) operate in response to the output voltage of the generator (30) and the actual motor speed.
대표청구항
▼
1. Speed governor for a pneumatic rotation motor having a rotor (11) and a stator (10) with a pressure air inlet passage (15), comprising an inlet valve (16;56) with a flow controlling valve element (18;58) disposed in said inlet passage (15,15′), and a speed responsive activating device (24;54) ope
1. Speed governor for a pneumatic rotation motor having a rotor (11) and a stator (10) with a pressure air inlet passage (15), comprising an inlet valve (16;56) with a flow controlling valve element (18;58) disposed in said inlet passage (15,15′), and a speed responsive activating device (24;54) operatively connected to said inlet valve (16;58), wherein:said activating device (24;54) comprises a pneumatic pilot circuit (21,20,25;72,70,77,78) for governing the operation of said inlet valve (16;56), and said pilot circuit (21,20,25;72,70,77,78) comprises: an activating surface (20;70) on said valve element (18;58), a restricted pressure air supply opening (21;72) communication with said activating surface (20;70), an air bleed-off valve (24;54)communicating with said activating surface (20;70) and comprising an electromagnetic actuator (27;76), and a generator (30) driven by said motor and delivering a motor speed responsive output voltage, said generator (30) is connected to said electro-magnetic actuator (27;76) for accomplishing operation of said bleed-off valve (24;54) and said inlet valve (16;56) in response to said output voltage. 2. Speed governor according to claim 1, wherein said generator (30) comprises a permanent magnet (32) rigidly secured to said motor rotor (11), and a toroid-shaped stator winding (34).3. Speed governor according to claim 2, wherein said permanent magnet (32) comprises a bar magnet secured in a co-axial extension (33) of said motor rotor (11).4. Speed governor according to claim 1, wherein said activating surface (70) is formed by a closed bellow (68) associated with said valve element (58), said bellow (68) is supplied with pressure air via said restricted pressure air supply opening (72) and is drained via said bleed-off valve (54) in response to the output voltage of said generator (30).5. Speed governor according to claim 1, wherein said generator (30) is an alternator, and a rectifier (31) is provided between said generator (30) and said electromagnetic actuator (21;76).6. Speed governor according to any one of claims 1-5, wherein said bleed-off valve (24;54) comprises an outlet opening (25;78), and a disc shaped valve element (26;79) which is located across said opening (25;78) for controlling the outflow therefrom, and said disc shaped valve element (26;79) is comprised of a ferromagnetic material for co-operation with said electromagnetic actuator (27;76).7. Speed governor according to any one of claims 1-5, wherein said rotation motor comprises a turbine having a circumferential row of drive blades (12) on said rotor (11), and one or more air inducing drive nozzles (13) in said stator (10) communicating with said air inlet, passage (15;15′) via said inlet valve (16;56).8. Speed governor according to claim 6, wherein said rotation motor comprises a turbine having a circumferential row of drive blades (12) on said rotor (11), and one or more air inducing drive nozzles (13) in said stator (10) communicating with said air inlet passage (15;15′) via said inlet valve (16;56).9. Speed governor according to claim 2, wherein said generator (30) is an alternator, and a rectifier (31) is provided between said generator (30) and said electromagnetic actuator (27;76).10. Speed governor according to claim 9, wherein said bleed-off valve (24;54) comprises an outlet opening (25;78), and a disc shaped valve element (26;79) which is located across said opening (25;78) for controlling the outflow therefrom, and said disc shaped valve element (26;79) is comprised of a ferromagnetic material for co-operation with said electromagnetic actuator (27;76).11. Speed governor according to claim 9, wherein said rotation motor comprises a turbine having a circumferential row of drive blades (12) on said rotor (11), and one or more air inducing drive nozzles (13) in said stator (10) communicating with said air inlet, passage (15;15′) via said inlet valve (16;56).12. Speed governor according to claim 10, wherein said rotation motor comprises a turbine having a circumferential row of drive blades (12) or said rotor (11), and one or more air inducing drive nozzles (13) in said stator (10) communicating with said air inlet passage (15;15′) via said inlet valve (16;56).
※ AI-Helper는 부적절한 답변을 할 수 있습니다.