IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0794659
(2010-06-04)
|
등록번호 |
US-8322359
(2012-12-04)
|
우선권정보 |
IT-BO2005A0197 (2005-03-25) |
발명자
/ 주소 |
- Zecchi, Stefano
- Monti, Andrea
|
출원인 / 주소 |
- O.M.T. Officina Meccanica Tartarini S.r.I.
|
대리인 / 주소 |
Marshall, Gerstein & Borun LLP
|
인용정보 |
피인용 횟수 :
9 인용 특허 :
12 |
초록
▼
A gas pressure regulator comprises a main body having a first, gas inlet pipe and a second, gas outlet pipe, a calibrated gas passage through which gas flows from the first pipe to the second pipe, a shutter housed at least partially in the main body and mobile lengthwise along a first defined line
A gas pressure regulator comprises a main body having a first, gas inlet pipe and a second, gas outlet pipe, a calibrated gas passage through which gas flows from the first pipe to the second pipe, a shutter housed at least partially in the main body and mobile lengthwise along a first defined line to adjust the opening of the calibrated passage, a device for actuating the shutter and a regulator spring unit opposing the movement of the shutter.
대표청구항
▼
1. A gas pressure regulator, comprising: a main body having a gas inlet pipe and a gas outlet pipe;a calibrated gas passage through which gas flows from the gas inlet pipe to the gas outlet pipe;a shutter housed at least partially in the main body and mobile lengthwise along a first defined line to
1. A gas pressure regulator, comprising: a main body having a gas inlet pipe and a gas outlet pipe;a calibrated gas passage through which gas flows from the gas inlet pipe to the gas outlet pipe;a shutter housed at least partially in the main body and mobile lengthwise along a first defined line to adjust an opening of the calibrated gas passage between a first end position in which the calibrated gas passage is closed and a second end position in which the calibrated gas passage is fully open;a shutter actuator adapted to actuate the shutter;a spring device that opposes the movement of the shutter from the first end position to the second end position, the spring device comprising at least one regulator spring unit disposed within the shutter and acting directly or indirectly on the shutter, wherein the regulator spring unit comprises a first regulator plate, a second regulator plate, and a helical spring disposed between the first regulator plate and the second regulator plate, and wherein the first regulator plate and the second regulator plate compress the helical spring such that the helical spring is in a preloaded state when the helical spring is disposed within the shutter. 2. The gas pressure regulator according to claim 1, further comprising a retainer that defines a maximum distance between the first and second regulator plates. 3. The gas pressure regulator according to claim 2, wherein the retainer is a snap ring. 4. The gas pressure regulator according to claim 3, further comprising a ring nut that threadedly engages a threaded portion of the top end of the shutter, wherein the ring nut is disposed between the snap ring and the top end of the shutter. 5. The gas pressure regulator according to claim 1, wherein the shutter comprises a hollow cylindrical body, and wherein the regulator spring unit is housed in the cylindrical body. 6. The gas pressure regulator according to claim 1, wherein the shutter actuator comprises a diaphragm operatively coupled to the shutter and housed in a volume defined by a first cover and a second cover connected to the main body. 7. The gas pressure regulator according to claim 6, wherein the diaphragm is held tight between an upper flange and a lower flange interposed between the shutter and the diaphragm, and wherein the upper flange and the lower flange each have a first central opening through which the shutter can pass at least partially when the shutter is being inserted into or extracted from the pressure regulator. 8. The gas pressure regulator according to claim 7, wherein an annular protrusion is formed on an outside face of the shutter, and wherein the annular protrusion abuts a circumferential ledge of the lower flange. 9. The gas pressure regulator according to claim 8, wherein a fastening element couples a plate to the upper flange such that a bottom surface of the plate engages a top surface of the annular protrusion and a top surface of the upper flange. 10. The gas pressure regulator according to claim 8, wherein a plurality of fastening elements couple a plurality of plates to the upper flange such that a bottom surface of each of the plurality of plates engages a top surface of the annular protrusion and a top surface of the upper flange. 11. The gas pressure regulator according to claim 9, wherein the fastening element is a screw. 12. The gas pressure regulator according to claim 1, wherein the first regulator plate has a top surface and a bottom surface, wherein the first regulator plate is slidably disposed within the shutter,the second regulator plate has a top surface and a bottom surface, wherein the second regulator plate is secured within the shutter such that the second regulator plate is stationary relative to the shutter,wherein the helical spring is disposed between the bottom surface of the first regulator plate and the top surface of the second regulator plate, the helical spring providing a spring force acting on both the bottom surface of the first regulator plate and the top surface of the second regulator plate,wherein a retainer is secured to a top portion of the shutter, the retainer being adapted to engage the top surface of the first regulator plate to prevent the spring force from axially displacing the first regulator plate from the second regulator plate, andwherein an uncompressed length of the helical spring is greater than the axial distance between the bottom surface of the first regulator plate and the top surface of the second regulator plate when the top surface of the first regulator plate engages the retainer. 13. The gas pressure regulator according to claim 12, wherein a circumferential ledge is formed within the shutter, the ledge supporting the bottom surface of the second regulator plate to secure the second regulator plate within the shutter. 14. The gas pressure regulator according to claim 12, wherein the retainer is a snap ring. 15. The gas pressure regulator according to claim 2, wherein the retainer is coupled to a top end of the shutter. 16. A method for assembling a gas pressure regulator having a main body with a gas inlet pipe and a gas outlet pipe, a calibrated gas passage through which gas flows from the gas inlet pipe to the gas outlet pipe, a shutter housed at least partially in the main body and mobile lengthwise along a first defined line to adjust an opening of the calibrated gas passage between a first end position in which the calibrated gas passage is closed and a second end position in which the calibrated gas passage is fully open, a shutter actuator adapted to actuate the shutter, and a spring device that opposes the movement of the shutter from the first end position to the second end position, the spring device comprising a regulator spring unit that acts directly or indirectly on the shutter, comprising: preloading the regulator spring unit within the shutter;inserting the shutter into the main body of the regulator through an opening;rigidly connecting the shutter to the shutter actuator; andclosing the opening with a removable cap. 17. The method according to claim 16, wherein the regulator spring unit is preloaded by inserting the regulator spring unit into the shutter. 18. The method according to claim 16, wherein preloading the regulator spring unit within the shutter comprises: inserting a second regulator plate into the shutter;inserting a helical spring into the shutter;inserting a first regulator plate into the shutter such that the helical spring is disposed between the first regulator plate and the second regulator plate; andcoupling a retainer to a top portion of the shutter such that the retainer prevents the helical spring from displacing the first regulator plate away from the second regulator plate. 19. A method for disassembling a gas pressure regulator having a main body with a gas inlet pipe and a gas outlet pipe, a calibrated gas passage through which gas flows from the gas inlet pipe to the gas outlet pipe, a shutter housed at least partially in the main body and mobile lengthwise along a first defined line to adjust an opening of the calibrated gas passage between a first end position in which the calibrated gas passage is closed and a second end position in which the calibrated gas passage is fully open, a shutter actuator adapted to actuate the shutter, and a spring device that opposes the movement of the shutter from the first end position to the second end position, the spring device comprising at least one preloaded regulator spring unit disposed within the shutter and acting directly or indirectly on the shutter, comprising: removing a cap from the regulator;disconnecting the shutter from the shutter actuator; andextracting the shutter from the main body of the regulator while the regulator spring unit is in a preloaded state.
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