IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0496908
(2006-08-01)
|
등록번호 |
US-7343845
(2008-03-18)
|
우선권정보 |
EP-05018231(2005-08-23) |
발명자
/ 주소 |
- Wirtl,Hannes
- Maichl,Martin
- Frisch,Herbert
|
출원인 / 주소 |
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
7 인용 특허 :
7 |
초록
▼
A fluid operated position regulator comprises a servo means, arranged in a regulator housing and by which a supply connection, a venting connection and a power connection can be placed in circuit in an adjustable manner. To predetermine or set its position the servo means possesses two mutually oppo
A fluid operated position regulator comprises a servo means, arranged in a regulator housing and by which a supply connection, a venting connection and a power connection can be placed in circuit in an adjustable manner. To predetermine or set its position the servo means possesses two mutually oppositely orientated fluid actuating faces of equal size, which respectively delimit a control chamber. The two control chambers are connected by way of an intermediately placed choke means with a common control pressure connection. Downstream from the two choke means each control chamber is connected with a venting connection. A control valve means can control the two venting connections and in particular simultaneously close them.
대표청구항
▼
What is claimed is: 1. A fluid operated position regulator for power devices comprising a regulator housing, in which at least one servo means, which is able to be shifted by controlled fluid actuation with the performance of a positioning movement, is arranged, said servo means being able, in a fa
What is claimed is: 1. A fluid operated position regulator for power devices comprising a regulator housing, in which at least one servo means, which is able to be shifted by controlled fluid actuation with the performance of a positioning movement, is arranged, said servo means being able, in a fashion dependent on its position, to place, in different manners, a supply connection, a venting connection and a power connection provided for the connection of the power device, in a fluid circuit with each other, wherein for setting its position the servo means has two fluid actuating faces facing in opposite directions of the servo motion and of equal effective sizes, each such fluid actuating face delimiting a control chamber and the two control chambers being provided with a common control pressure connection with which they are respectively connected for fluid flow by way of an intermediately placed choke means and the two control chambers are connected downstream from the respectively associated choke means with a venting connection, said two venting connections being provided with an electrically actuated control valve means, said control valve means constituting a single structural unit with the regulator housing and being able to respectively selectively open or close the two venting connections, such closing being adapted to simultaneously close of both venting connections. 2. The position regulator as set forth in claim 1, wherein the control pressure connection is connected on its input side with the supply connection, with the intermediate connection of a pressure regulator designed as a component of the structural unit. 3. The position regulator as set forth in claim 1, wherein the control valve means is designed for continuous operation and/or for pulse width modulated operation. 4. The position regulator as set forth in claim 1, wherein the control valve means possesses piezoelectrically activatable valve members. 5. The position regulator as set forth in claim 1, wherein the control valve means exhibits two valve members which are respectively associated with one of the venting connections and are arranged in a valve housing, said valve members being constituted by two adjacently placed strip-like piezoelectric flexural transducers, which are components of an integral flexural transducer unit. 6. The position regulator as set forth in claim 5, wherein the flexural transducer unit is mounted for pivoting, in relation to the valve housing, about a pivot axis, said axis extending normally to the planes of deflection of the flexural transducers, said mounting being on a bearing section which is arranged at one end of the flexural transducer unit and produces a rigid connection between the two flexural transducers. 7. The position regulator as set forth in claim 1, wherein the two control chambers are formed by the mutually axially opposite end sections of a housing chamber containing the servo means. 8. The position regulator as set forth in claim 1, wherein the servo means assumes, when there are identical fluid pressure conditions in the two control chambers, a position disconnecting the power connection both from the supply connection and also from the venting connection. 9. The position regulator as set forth in claim 1, wherein the two fluid actuating faces are provided on respectively one diaphragm element. 10. The position regulator as set forth in claim 1, wherein the servo means is arranged in a housing chamber of the regulator housing and possesses a plunger servo member extending in the longitudinal direction of the housing chamber and able to be set in relation to the regulator housing, such servo member being movably suspended on the regulator housing at its two terminal sections by way of an outer diaphragm element defining the associated fluid actuating face. 11. The position regulator as set forth in claim 10, wherein the servo member bears, in a coaxial arrangement, two closure members, which are able to be axially set in relation to the servo member and to the regulator housing, such closure members being axially spaced apart from each other and being acted upon by spring means in relation to the servo member and in a direction toward each other and being respectively opposite one of two axially oppositely orientated valve seats, between which a power chamber connected with the power connection is arranged, such power chamber being connected by transfer openings, delimited by the valve seats, on the one hand with a supply chamber arranged on the same side and connected with the supply connection and on the other hand with a venting chamber connected with the venting connection, such venting chamber being arranged on the opposite side, and an entraining section, lying between the closure members, of the servo member being so designed that starting in a home position of the servo member, in which the two closure members engage the associated valve seat and close the associated transfer opening, the entraining section dependent on the servo direction of the servo member lifts the one or the other closure member from the associated valve seat. 12. The position regulator as set forth in claim 11, wherein the servo member assumes the home position, when there are identical pressures in the two control chambers. 13. The position regulator as set forth in claim 11, wherein each closure member is suspended, in a manner allowing movement in relation to the housing, by way of an inner diaphragm element, which is placed internally with a clearance axially to the fore of an adjacent outer diaphragm element, and the inner diaphragm element separates in a sealing fashion the respectively adjacent supply chamber or respectively venting chamber from a pressure compensation chamber which is placed between the inner and the outer diaphragm element and each pressure compensation chamber is constantly connected for fluid flow with the power chamber. 14. The position regulator as set forth in claim 13, wherein each pressure compensation chamber is constantly connected for fluid flow with the power chamber via the respectively adjacent closure member. 15. The position regulator as set forth in claim 10, wherein the servo member is axially biased by two oppositely acting spring means in relation to the regulator housing. 16. The position regulator as set forth in claim 15, wherein the servo member is centered in position by the two oppositely acting spring means. 17. The position regulator as set forth in claim 15, wherein at least one of the spring means is able to be adjusted as regards its spring force.
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