Control pintle including a thrust member for a radial flow device

A cylindrical control pintle continuously eccentrically located in a hub of a rotor body with said rotor body having a cylindrical inner face which borders said rotor hub and said control pintle having a cylindrical outer face substantially of the diameter of said inner face with a clearance between said faces smaller than a hundredth of the diameter of said inner face, substantially radially directed channels extending from said inner face onto said rotary body, passages to lead fluid through said passages to control ports in said control pintle which port in said outer face at a location which meets said channels,

• wherein one of said ports is a high pressure port while the other of said ports is a low pressure port located diametrically opposed to said high pressure port respective to the axis of said pintle with closing arches provided on on the radial outer face of said control pintle and between said ports with said closing arches closing the respective passages of said passages when said passages move over said closing arches whereby said closing arches separate a high pressure zone of said control pintle in the neighborhood of said high pressure port from a low pressure zone of said control pintle in the neighborhood of said low pressure port,
• wherein a thrust chamber is provided in said low pressure zone extending from said outer face into said control pintle with said thrust chamber communicated at least indirectly to said high pressure port,
• wherein a thrust member is provided in said thrust chamber and subjected to said communication and the fluid therein,
• wherein said thrust member is provided with a seal face of a configuration which is complementary to a portion of said inner face to slide and seal thereon, and;
• wherein said thrust chamber and said thrust member therein are substantially radially directed to oppose forces to fluid which appear on the diametrically opposite half of said control pintle.

A cylindrical control pintle located in a hub of a rotary body, with said rotary body having a cylindrical inner face which borders said rotor hub and said control pintle having a cylindrical outer face substantially of the diameter of said inner face with a clearance between said faces smaller than a hundredth of the diameter of said inner face, radially directed rotor channels extending from said inner face into said rotary body, passages to lead fluid through said passages to control ports in said control pintle which port in said outer face at a location which meets said rotor channels,

• wherein one of said ports is a high pressure port while the other of said ports is a low pressure port located diametrically opposed to said high pressure port respective to the axis of said pintle with closing arches provided on on the radial outer face of said control pintle and between said ports with said closing arches closing the respective passages of said passages when said passages move over said closing arches whereby said closing arches separate a high pressure zone of said control pintle in the neighborhood of said high pressure port from a low pressure zone of said control body in the neighborhood of said low pressure port,
• wherein a thrust chamber is provided in said low pressure zone extending from said outer face into said control pintle with said thrust chamber communicated at least indirectly to said high pressure port,
• wherein a thrust body is provided in said thrust chamber and subjected to said communication and the fluid therein,
• wherein said thrust body is provided with a seal face of a configuration which is complementary to a portion of said inner face to slide and seal thereon,
• wherein said thrust chamber and said thrust member therein are substantially radially directed to oppose forces of fluid which appear on the diametrically opposite half of said control pintle and,
• wherein the cross sectional areas of said thrust chamber and of said thrust member therein multiplied by the high pressure fluid in said control ports exceeds slightly said forces on fluid on said diametrically opposite half to
• thereby continuously press said control pintle into an eccentric location in said hub of said rotary body towards closer facing of the respective portion of said inner face by a respective portion of said outer face of said control pintle which is located diametrically opposite respective to said control pintle and said thrust chamber with said thrust body therein.

An assembly of two bodies with substantially parallel axial axes,

• wherein one of said bodies is a rotary body, forming a rotor, and the other of said bodies is a nonrotatable body, forming a control pintle, the first of said bodies has a concentric bore around one of said axial axes with an inner face interrupted by a passage extending from said inner face substantially normal to said one of said axial axes into said one of said bodies;
• wherein the second body of said bodies has an outer face of substantially cylindrical configuration of a diameter fitting into said inner face;
• wherein the second body of said bodies has channels for the supply of fluid into a high pressure control port which interrupts said outer face;
• wherein sealing lands are formed axially of said control port by portions of said faces and are axially extending to unloading recesses which are cut into one of said faces parallel to the walls of said port, while said recesses are freed from pressure;
• wherein said passage in said first body periodically communicates with said port when one of said bodies revolves relative to the other of said bodies,
• wherein one of said ports is a high pressure port while the other of said ports is a low pressure port located diametrically opposed to said high pressure port respective to the axis of said body with closing arches provided on on the radial outer face of said control body and between said ports with said closing arches closing the respective passages of said passages when said passages move over said closing arches whereby said closing arches separate a high pressure zone of said control body in the neighborhood of said high pressure port from a low pressure zone of said control body in the neighborhood of said low pressure port,
• wherein said second body has on its other half which is diametrically oppositionally located respective to the first half which contains said port at least one substantially radially directed and radially outwardly open chamber which is communicated to said high pressure port;
• wherein at least one substantially radially moveable thrust member is provided in said chamber and subjected on a radial inner portion to the high pressure in said chamber,
• while said thrust member forms on its radial outer end a sealing face of part cylindrical configuration formed complementary to a portion of said inner face with said sealing face being pressed by said high pressure in said chamber against said inner face to seal therealong, whereby said control pintle is continuously pressed into an eccentric location, and,
• wherein said chamber is a thrust chamber of cross-sectionally cylindrical configuration around a substantially radial axis with said thurst member sealed and fitted in said thrust chamber for moveability therein along said radial axis and the center line of said sealing face of said complementary part-cylindrical configuration is parallel to the other axis of said axial axes of said two bodies.

In a device for intake and expulsion of fluid, a housing containing a rotor with at least one chamber group of a plurality of individual chambers with means to take in and expel fluid by said chambers and including an axially extending central rotor bore having a substantial cylindrical inner face, a substantially non-rotary control body extending into said bore and having an outer face of substantial fit on said inner face with a narrow clearance remaining between said faces to permit rotation of said rotor relative to said control body, said control body also containing channels ending in control ports and said rotor containing substantial radial passages extending from said chambers to said inner face for alternating communication with a least two of said control ports when said rotor revolves;

• wherein one of said ports is a high pressure port while the other of said ports is a low pressure port located diametrically opposed to said high pressure port respective to the axis of said body with closing arches provided on on the radial outer face of said control body and between said ports with said closing arches closing the respective passages of said passages when said passages move over said closing arches whereby said closing arches separate a high pressure zone of said control body in the neighborhood of said high pressure port from a low pressure zone of said control body in the neighborhood of said low pressure port,
• wherein said control body is provided with at least one thrust chamber extending substantially normal to the longitudinal axis of said control body;
• wherein a communication is provided from said high pressure port to said thrust chamber to pass high pressure fluid therein from said high pressure port to said thrust chamber, and;
• wherein a thrust member is provided in said thrust chamber, radially moveable therein, subjected to said high pressure, having an outer slide face of a complementary configuration relative to a portion of said inner face while being pressed by said high pressure continuously against a portion of said inner face in an eccentric manner, and;
• wherein two of said thrust chambers, two of said thrust members and two of said communications are provided in said control body and wherein said thrust chambers, members and communications are located axially distanced from a respective port, each one of the two in opposite axial direction relative to the axis of said control body.

An assembly of two bodies, comprising, in combination, a first body, forming a rotor, provided with a bore whereby said body forms a cylindrical inner face around the axis of said bore with said inner face bordering said bore and forming a cylindrical face of a radius around said axis while said second body forms a control pintle which is located in said bore of said first body;

• wherein said second body is provided with a thrust chamber which extends perpendicular to said axis into a portion of said second body and has a passage means communicated to a source of fluid under high pressure,
• wherein said thrust chamber has a cylindrical configuration and on one of its axial ends a slot which extends perpendicular to the axis of said cylindrical configuration of said thrust chamber whereby it extends perpendicular to said axis of said bore in said first body, and,
• wherein a thrust member is provided in said thrust chamber and in said slot with an inner portion of said thrust body closely fitting in and inserted into said cylindrical configuration of said thrust chamber while the outer portion of said thrust member is inserted into said slot and forms on its outer end a seal face portion of a radius equal to said radius around said axis of said bore and said seal face of said thrust member is pressed against a portion of said inner face when fluid under high pressure is led by said source of fluid under high pressure into said thrust chamber,
• wherein said thrust chamber has a cylindrical configuration and on one of its axial ends a slot which extends perpendicular to the axis of said cylindrical configuration of said thrust chamber and perpendicular to the axis of said control pintle in the hub of said rotor which forms said first body,
• wherein said thrust member is provided in said thrust chamber and in said slot with an inner portion of said thrust body closely fitting in and inserted into said cylindrical configuration of said thrust chamber while the outer portion of said thrust member is inserted into said slot and forms on its outer end a seal face portion of a radius equal to the radius around the axis of said inner face and said seal face of said thrust member is pressed against a portion of said inner face when fluid under pressure is led from said high pressure port into said thrust chamber.

An assembly of two bodies, comprising, in combination, a first body, forming a rotor, provided with a bore whereby said body forms a cylindrical inner face around the axis of said bore with said inner face bordering said bore and forming a cylindrical face of a radius around said axis while said second body forms a control pintle which is located in said bore of said first body;

• wherein said second body is provided with a thrust chamber which extends perpendicular to said axis into a portion of said second body and has a passage means communicated to a source of fluid under high pressure,
• wherein said thrust chamber has a cylindrical configuration and on one of its axial ends a slot which extends perpendicular to the axis of said cylindrical configuration of said thrust chamber whereby it extends perpendicular to said axis of said bore in said first body, and,
• wherein a thrust member is provided in said thrust chamber and in said slot with an inner portion of said thrust body closely fitting in and inserted into said cylindrical configuration of said thrust chamber while the outer portion of said thrust member is inserted into said slot and forms on its outer end a seal face portion of a radius equal to said radius around said axis of said bore and said seal face of said thrust member is pressed against a portion of said inner face when fluid under high pressure is led by said source of fluid under high pressure into said thrust chamber,
• whereby said control pintle is continuously pressed into an eccentric location relative to said rotor,
• wherein said thrust chamber has a cylindrical configuration and on one of its axial ends a slot which extends perpendicular to the axis of said cylindrical configuration of said thrust chamber and perpendicular to the axis of said control pintle in the hub of said rotor which forms said first body,
• wherein said thrust member is provided in said thrust chamber and in said slot with an inner portion of said thrust body closely fitting in and inserted into said cylindrical configuration of said thrust chamber while the outer portion of said thrust member is inserted into said slot and forms on its outer end a seal face portion of a radius equal to the radius around the axis of said inner face and said seal face of said thrust member is pressed against a portion of said inner face when fluid under pressure is led from said high pressure port into said thrust chamber.

An assembly of two bodies, comprising, in combination, a first body, forming a rotor, provided with a bore whereby said body forms a cylindrical inner face around the axis of said bore with said inner face bordering said bore and forming a cylindrical face of a radius around said axis while said second body forms a control pintle which is located in said bore of said first body;

• wherein said second body is provided with a thrust chamber which extends perpendicular to said axis into a portion of said second body and has a passage means communicated to a source of fluid under high pressure,
• wherein said thrust chamber has a cylindrical configuration and on one of its axial ends a slot which extends perpendicular to the axis of said cylindrical configuration of said thrust chamber whereby it extends perpendicular to said axis of said bore in said first body, and,
• wherein a thrust member is provided in said thrust chamber and in said slot with an inner portion of said thrust body closely fitting in and inserted into said cylindrical configuration of said thrust chamber while the outer portion of said thrust member is inserted into said slot and forms on its outer end a seal face portion of a radius equal to said radius around said axis of said bore and said seal face of said thrust member is pressed against a portion of said inner face when fluid under high pressure is led by said source of fluid under high pressure into said thrust chamber,
• whereby said control pintle is continuously pressed into an eccentric location relative to said rotor,
• wherein said rotor is revolvably borne in a housing and a shaft is revolvingly borne in a portion of said housing substantially with an axis which substantially coincides with the axis of said rotor with said shaft revolving parallel to said rotor when said rotor revolves, and,
• wherein a flexible clutch means is provided to one of said bodies to permit a radial departure of said control pintle in said hub from the axis of said hub to permit said thrust member to press said control pintle in said hub with said high presure zone against the respective portion of said inner face to minimize the leakage flow out of said high pressure port in said high pressure zone by narrowing the clearance between said inner face and said body of cylindrical configuration in the neighborhood of said high pressure zone.

An assembly of two bodies with substantially parallel axial axes in a radial flow machine,

• wherein one of said bodies is a rotor and the other of said bodies is a nonrotatable pintle the first of said bodies has a centric bore around one of said axial axes with an inner face interrupted by a passage extending from said inner face substantially normal to said one of said axial axes into said one of said bodies to facilitate substantially radial flows through said passage, wherein said pintle has an outer face of substantially cylindrical configuration of a diameter fitting into said inner face;
• wherein said pintle has conduits for the supply of fluid into a high pressure control port which interrupts said outer face;
• wherein seating lands are formed axially of said control port by portions of said faces and are axially extending to unloading recesses which are cut into one of said faces parallel to the walls of said port, while said recesses are freed from pressure;
• werein said passage in said rotor periodically communicates with said port when one of said bodies revolves relative to the other of said bodies,
• wherein said pintle has on its other half which is diametrically oppositionally located respective to the first half which contains said port at least one substantially radially directed and radially outwardly open chamber which is communicated to said high pressure port;
• wherein at least one substantially radially moveable thrust member is provided in said chamber and subjected on a radial inner portion to the high pressure in said chamber,
• while said thrust member forms on its radial outer end a sealing face of part cylindrical configuration formed complementary to a portion of said inner face with said sealing face being pressed by said high pressure in said chamber against said inner face to seal therealong,
• wherein said chamber is a thrust chamber of cross-sectionally cylindrical configuration around a substantially radial axis with said thrust member sealed and fitted in said thrust chamber for moveability therein along said radial axis and the center line of said sealing face of said complementary part-cylindrical configuration is parallel to the other axis of said axial axes of said two bodies;
• wherein said radial outer end of thrust body is provided with a pocket through said sealing face with said pocket communicated to said thrust chamber;
• and;
• wherein said substantial radial axis is directed through the center of the pressure area of said control port whereby the high pressure in said thrust chamber directs its thrust along said radial axis towards said sealing face while the opposing reaction force of the pressure in said thrust chamber directs its thrust along said radial axis onto said pintle to press said pintle continuously into an eccentric location relative to said rotor for sealing engagement of said high pressure port on the respective portion of said inner face of said rotor.

An assembly of two bodies with substantially parallel axes in a radial flow device

• wherein one of said bodies is a rotary body which forms a fluid handling rotor and the other of said bodies is a nonrotatable pintle, the first of said bodies has a centric bore around one of said axial axes with an inner face interrupted by a passage extending from said inner face substantially normal to said one of said axial axes into said one of said bodies;
• wherein the second body of said bodies has an outer face of substantially cylindrical configuration of a diameter fitting into said inner face;
• wherein the second body of said bodies has channels for the supply of fluid into a high pressure control port which interrupts said outer face;
• wherein sealing lands are formed axially of said control port by portions of said faces and are axially extending to unloading recesses which are cut into one of said faces parallel to the walls of said port, while said recesses are freed from pressure;
• werein said passage in said first body periodically communicates with said port when one of said bodies revolves relative to the other of said bodies,
• wherein said second body has on its other half which is diametrically oppositionally located respective to the first half which contains said port at least one substantially radially directed and radially outwardly open chamber which is communicated to said high pressure port;
• wherein at least one substantially radially moveable thrust member is provided in said chamber and subjected on a radial inner portion to the high pressure in said chamber,
• while said thrust member forms on its radial outer end a sealing face of part cylindrical configuration formed complementary to a portion of said inner face with said sealing face being pressed by said high pressure in said chamber against said inner face to seal therealong,
• wherein said chamber is a thrust chamber of cross-sectionally rectangular configuration along a substantially radial axis with said thrust member sealed and fitted in said thrust chamber for moveability therein along said radial axis and the center line of said sealing face of said complementary part-cylindrical configuration is parallel to the other axis of said axial axes of said two bodies, wherein said pintle is continuously pressed into an eccentric location relative to said rotor, and,
• wherein said radial outer end of said thrust body is provided with a pocket through said sealing face with said pocket communicated to said thrust chamber.

A control pintle located in a hub of a rotor in a radial flow device with said rotor including a plurality of working chambers whose volumes periodically increase and decrease, with said rotor having a cylindrical inner face which borders said rotor hub and said control pintle having a cylindrical outer face substantially of the diameter of said inner face with a clearance between said faces smaller than a hundredth of the diameter of said inner face, substantially radially directed rotor ports for radial flow of fluid to and from said chambers with said rotor ports extending from said inner face into said rotor to said chambers, passages in said control pintle to lead fluid through said passages to control ports in said control pintle which port in said outer face at a location which meets said rotor ports,

• wherein a thrust chamber is provided in said control pintle with said thrust chamber having a communication at least indirectly to one of said control ports;
• wherein a thrust body is provided in said thrust chamber and subjected to said communication and the fluid therein,
• wherein said thrust body is provided with a seal face of a configuration which is complementary to a portion of said inner face to slide and seal thereon,
• wherein said thrust chamber and said thrust member therein are substantially radially directed to oppose forces of fluid which appear on the diametrically opposite half of said control pintle, whereby said thrust body is pressed by high pressure fluid in said thrust chamber against a portion of said inner face of said rotor, and,
• wherein the cross sectional areas of said thrust chamber and of said thrust member therein multiplied by the high pressure fluid in said control ports exceeds slightly said forces of fluid on said diametrically opposite half to
• thereby continuously press said control pintle into an eccentric location in said hub of said rotary body towards closer facing of the respective portion of said inner face by a respective portion of said outer face of said control pintle which is located diametrically opposite respective to said control pintle and said thrust chamber with said thrust body therein.

In a radial flow radial piston machine, in combination, a rotor revolvably borne in a housing and having a rotor face, a control pintle associated to said rotor and having a control face sliding and sealing along said rotor face and a sealing arrangement associate to said rotor and to said control pintle,

• wherein said housing has ports and fluid passages extending towards said control pintle,
• wherein said fluid passages extend through said control pintle and form control ports in said control face of said control pintle,
• wherein rotor passages extend from said rotor face through a portion of said rotor to working chambers provided in said rotor,
• wherein fluid can flow through one of said passages from one of said ports into at least one of said chambers and out of said chamber through another of said passages to another of said ports,
• wherein said sealing arrangement includes means for sealing along a portion of said faces,
• wherein said rotor has a substantially cylindrical and axially extending rotor-hub having an inner face,
• wherein said inner face is said rotor face,
• wherein said control pintle is a substantially cylindrical control pintle of a diameter only slightly smaller than the diameter of said rotor-hub,
• wherein said control pintle extends into said rotor-hub along said rotor face,
• wherein said control pintle has a substantially cylindrical outer face,
• wherein said outer face is said control face,
• wherein a small substantially cylindrical control-clearance is formed between said faces
• and wherein said sealing arrangement is associated to a portion of said cylindrical control clearance,
• wherein said control pintle has a pressure port portion formed around the respective acting control port of the higher pressure and a diametric portion,
• wherein said diametric portion is the opposite portion on the other side of the axis of said control pintle and thereby substantially diametrically and oppositely located on said control pintle relative to said high pressure port portion and to said axis of said control pintle
• wherein at least one fluid pressure thrust chamber is provided in said diametric portion,
• wherein said thrust chamber has a bottom portion and an outwardly open outer portion,
• wherein said thrust chamber extends substantially radially and substantially normal to the axis of said control pintle in said control pintle,
• wherein a communication means is provided to pass fluid from a respective control port of said high pressure port portion to said bottom portion of said thrust chamber and to maintain a fluid pressure in said bottom portion of said thrust chamber equal to the high pressure fluid in said respective control port,
• wherein a thrust member is respectively to said axis radially moveably provided in said thrust chamber and subjected to said pressure in the bottom portion of said thrust chamber,
• wherein said thrust member has an outer seal face of a radius substantially equal to the radius of the said inner face of said rotor,
• wherein said thrust member is pressed by said high fluid pressure in said bottom portion of said thrust chamber towards the adjacent portion of said inner face of said rotor whereby said outer seal face is pressed to a close engagement with the said respective portion of said inner face of said rotor, and
• whereby said high pressure port portion of said control pintle is permanently pressed towards the opposite portion of said inner face of said rotor to narrow at said high pressure port portion the clearance between the respective portion of said control face of said control pintle and the said inner face of said rotor for the purposes of reducing leakage of fluid along said high pressure port portion.