Exemplary embodiments of a gas biased pressure regulator comprise a capsule subassembly and a regulator body. The regulator body is adapted to connect to a source of pressurized gas. The capsule subassembly is removably received within the regulator body and includes a capsule body and a piston. The
Exemplary embodiments of a gas biased pressure regulator comprise a capsule subassembly and a regulator body. The regulator body is adapted to connect to a source of pressurized gas. The capsule subassembly is removably received within the regulator body and includes a capsule body and a piston. The piston is axially slidable between fluid release and fluid seal configurations. When the piston is in its fluid release configuration, an output chamber is placed in fluid communication with the source. When the piston is in its fluid seal configuration, the output chamber is sealed from fluid communication with the source. A pressurizable bias chamber within the capsule body contains a bias pressure urging the piston toward its fluid release configuration. Pressure from the source urges the piston toward its fluid seal configuration. The piston may also have a fluid charge configuration for facilitating the pressurization of the bias chamber.
대표청구항▼
1. A pressure regulator comprising: a regulator body having a source end, an application end and a main bore extending therebetween, a first portion at the source end and a second portion at the application end, wherein the source end is adapted to being placed in fluid communication with a source o
1. A pressure regulator comprising: a regulator body having a source end, an application end and a main bore extending therebetween, a first portion at the source end and a second portion at the application end, wherein the source end is adapted to being placed in fluid communication with a source of pressurized gas; anda capsule subassembly including a capsule body and a piston, the capsule body having a distal end and a proximal end, and being at least partially defined by a capsule wall housing a cavity therein, the cavity extending generally from the distal end toward the proximal end, the capsule wall having an inner surface, an outer surface and at least one capsule port extending therethrough;wherein the capsule subassembly is adapted to being in removable received engagement with the main bore and disposed thereat in fluid communication between a source chamber and an output chamber such that the distal end is in fluid communication with the source chamber; andwherein the piston is adapted to being received by the cavity for defining, at least in part, a pressurizible bias chamber within the cavity and for slidable axial movement of the piston within the cavity between a charge configuration, a fluid release configuration and a fluid seal configuration, the at least one capsule port being in fluid communication with the bias chamber when the piston is in its charge configuration, the at least one capsule port being in fluid communication with the distal end when the piston is in its fluid release configuration, and the at least one capsule port being sealed from fluid communication with the bias chamber and the distal end when the piston is in its fluid seal configuration. 2. A pressure regulator as defined in claim 1 in which the capsule subassembly incudes a seat element and a pin seal, the seat element having a pin bore and a pin seal seat and being adapted for threaded movement between a charge position and an operational position, the pin seal having a pin shaft and a pin seal face; wherein the pin shaft is adapted to extend through the pin bore and be in fixed connection with the piston, and the pin seal face is adapted to move into and out of sealing engagement with the pin seal seat thereby respectively preventing and allowing fluid flow through the pin bore; andwherein threaded movement of the seat element into its charge position results in movement of the piston to its charged configuration, and threaded movement of the seat element into its operational position forces the piston toward its fluid release configuration. 3. A pressure regulator as defined in claim 1 in which the seat element is comprised substantially of a polymer. 4. A pressure regulator as defined in claim 1 in which the seat element is comprised substantially of Polyoxymethyline. 5. A pressure regulator as defined in claim 1 further comprising a retainer element adapted to threadedly engage the main bore generally within the second portion, thereby axially retaining the capsule body within the main bore. 6. A pressure regulator as defined in claim 1 further comprising a poppet element, the output chamber being defined, at least in part, by the regulator body, the capsule body, the retainer element and the poppet element. 7. A pressure regulator as defined in claim 1 in which the capsule body includes a capsule seal groove generally circumferentially disposed thereabout, the capsule seal groove being adapted to receive an outer capsule seal for establishing a seal between the outer surface and the main bore. 8. A pressure regulator as defined in claim 1 in which the regulator body further includes an intermediate portion disposed between the first portion and the second portion, the intermediate portion having a plurality of generally radially extending ports; wherein at least one of the generally radially extending ports is adapted to be in fluid communication with the source chamber by way of a high-side flow channel formed between the outer surface and the main bore when the capsule subassembly is in removable received engagement with the main bore; andwherein at least one of the generally radially extending ports is adapted to be in fluid communication with the output chamber by way of a low-side flow channel formed between the outer surface and the main bore when the capsule subassembly is in removable received engagement with the main bore. 9. A pressure regulator as defined in claim 1 in which the first portion includes external threads for threaded engagement with a reservoir for storing pressurized gas, and the second portion is adapted to threadedly engage an application fitting. 10. A pressure regulator as defined in claim 1 in which the capsule subassembly includes a compression spring adapted to be axially disposed within the bias chamber to contribute, at least in part, to the overcoming of static friction between the piston and the inner surface. 11. A pressure regulator comprising: a regulator body having a source end, an application end and a main bore extending therebetween, a first portion at the source end and a second portion at the application end, wherein the source end is adapted to being placed in fluid communication with a source of pressurized gas; anda capsule subassembly including a capsule body, a piston, a seat element and a pin seal, the capsule body having a generally open distal end and a closed proximal end, and being at least partially defined by a capsule wall housing a cavity therein, the cavity extending generally from the distal end toward the proximal end, the capsule wall having an inner surface, an outer surface and at least one capsule port extending therethrough, the capsule subassembly being in removable received engagement with the main bore and disposed thereat in fluid communication between a source chamber and an output chamber such that the distal end is in fluid communication with the source chamber, the piston being received by the cavity for defining, at least in part, a pressurizible bias chamber within the cavity and for slidable axial movement of the piston within the cavity between a charge configuration, a fluid release configuration and a fluid seal configuration, the seat element having a pin bore and a pin seal seat, the seat element being threadedly moveable between a charge position and an operational position, the pin seal having a pin shaft and a pin seal face, the pin shaft extending through the pin bore and being in fixed connection with the piston;a retainer element in threaded engagement the main bore generally within the second portion, thereby axially retaining the capsule body within the main bore;wherein the at least one capsule port is in fluid communication with the bias chamber when the piston is in its charge configuration, the at least one capsule port is in fluid communication with the distal end when the piston is in its fluid release configuration, and the at least one capsule port is sealed from fluid communication with the bias chamber and the distal end when the piston is in its fluid seal configuration;wherein the pin seal face is adapted to move into sealing engagement with the pin seal seat and thereby prevent fluid flow through the pin bore when the piston is in its fluid seal configuration, and the pin seal face is adapted to move out of sealing engagement with the pin seal thereby allowing fluid flow through the pin bore when the piston is in its fluid release configuration; andwherein threaded movement of the seat element into its charge position results in movement of the piston to its charged configuration, and threaded movement of the seat element into its operational position forces the piston toward its fluid release configuration. 12. A pressure regulator as defined in claim 11 in which the capsule body includes a capsule seal groove generally circumferentially disposed thereabout, the capsule seal groove being adapted to receive an outer capsule seal for establishing a seal between the outer surface and the main bore. 13. A pressure regulator as defined in claim 11 in which the seat element is comprised substantially of a polymer. 14. A pressure regulator as defined in claim 11 in which the regulator body further includes an intermediate portion disposed between the first portion and the second portion, the intermediate portion having a plurality of generally radially extending ports; wherein at least one of the generally radially extending ports is in fluid communication with the source chamber by way of a high-side flow channel formed between the outer surface and the main bore; andwherein at least one of the generally radially extending ports is in fluid communication with the output chamber by way of a low-side flow channel formed between the outer surface and the main bore.
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이 특허에 인용된 특허 (6)
Carpenter,Dale; Henley,Jason, Method and apparatus for a pressure regulator.
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