IPC분류정보
국가/구분 |
United States(US) Patent
등록
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국제특허분류(IPC7판) |
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출원번호 |
US-0858875
(2010-08-18)
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등록번호 |
US-8567758
(2013-10-29)
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발명자
/ 주소 |
- Bouten, Petrus Henricus Johannes
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출원인 / 주소 |
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인용정보 |
피인용 횟수 :
2 인용 특허 :
23 |
초록
▼
A valve may include a valve body, a valve spool, and a valve actuator arrangement. The valve body may comprise a bore and a first and a second passage to the bore. The valve spool may comprise a first end and a second end and be at least partially positioned and slidable within the bore. The valve s
A valve may include a valve body, a valve spool, and a valve actuator arrangement. The valve body may comprise a bore and a first and a second passage to the bore. The valve spool may comprise a first end and a second end and be at least partially positioned and slidable within the bore. The valve spool may comprise a first and a second sealing region in sealing contact with the bore. A first chamber may be comprised, at least in part, between the bore and the valve spool at the first end. A second chamber may be comprised, at least in part, between the bore and the valve spool and between the first and the second sealing regions. A third chamber may be comprised, at least in part, between the bore and the valve spool at the second end. A third passage connects the first and the third chambers. The first and the second passages are both open to the second chamber when the valve is at an open position. One and/or both of the first and the second passages are closed to the second chamber when the valve is at a closed position. In certain embodiments, no power is supplied to the valve at the open position and/or the closed position, and momentary loads, applied by solenoids of the valve actuator arrangement, move the valve spool between the open and the closed positions.
대표청구항
▼
1. A valve comprising: a valve body comprising a bore comprising an axis, a first passage open to the bore, and a second passage open to the bore;a valve spool comprising a first end and a second end, the valve spool at least partially positioned within the bore of the valve body and slidable along
1. A valve comprising: a valve body comprising a bore comprising an axis, a first passage open to the bore, and a second passage open to the bore;a valve spool comprising a first end and a second end, the valve spool at least partially positioned within the bore of the valve body and slidable along the axis of the bore, the valve spool comprising a first sealing member, a second sealing member, and a third sealing member, the sealing members each being in sealing contact with the bore, the valve spool comprising a first reduced-section region positioned between the first end of the valve spool and the first sealing member, a second reduced-section region positioned between the first sealing member and the second sealing member, and a third reduced-section region positioned between the third sealing member and the second end of the valve spool, wherein the valve spool comprises a first detent groove located at the first end and a second detent groove located at the second end, wherein the valve body comprises a first detent member holder located at a first end thereof and a second detent member holder located at a second end thereof, wherein a first detent member and a second detent member are located in the first and second detent member holders respectively, wherein the first detent member is configured to engage the first detent groove when the valve spool is in an open position, wherein the second detent member is configured to engage the second detent groove when the valve spool is in closed position, wherein each of the first detent member and the second detent member comprises at least one ball that engages the first detent groove and the second detent groove respectively, wherein at least one of the first detent member holder and the second detent member holder comprises a sealable opening, and wherein the sealable opening is configured to change a volume of a second fluid in a first chamber and a third chamber;the first chamber comprised at least in part between the bore of the valve body and the first reduced-section region of the valve spool;a second chamber comprised at least in part between the bore of the valve body and the second reduced-section region of the valve spool;the third chamber comprised at least in part between the bore of the valve body and the third reduced-section region of the valve spool;a third passage open to the first chamber and the third chamber;a valve actuator arrangement adapted to apply a first momentary load on the valve spool to move the valve spool to a closed position and adapted to apply a second momentary load on the valve spool to move the valve spool to an open position; anda first magnetic element and a second magnetic element, wherein the first magnetic element is mounted adjacent the first end of the valve spool and the second magnetic element is mounted adjacent the second end of the valve spool, wherein the magnetic elements comprise grooves to allow the second fluid to pass across the magnetic elements, the grooves being sized for the fluid and configured to customize a control time in response to a dynamic behavior property;wherein when the valve spool is at the open position the first passage and the second passage are both open to the second chamber thereby allowing a first fluid to pass between the first passage and the second passage;wherein when the valve spool is at the closed position the valve spool forms a barrier between the first passage and the second passage and thereby substantially prevents the first fluid from passing between the first passage and the second passage; andwherein the second fluid is transferred between the first chamber and the third chamber via the third passage when the valve spool is moved between the open position and the closed position. 2. The valve of claim 1, wherein the first passage comprises an inlet passage and the second passage comprises an outlet passage. 3. The valve of claim 1, wherein the valve spool comprises a fourth reduced-section region positioned between the second sealing member and the third sealing member. 4. The valve of claim 1, wherein the third passage is at least partly comprised by the valve spool. 5. The valve of claim 1, wherein the third passage is at least partly comprised by the valve body. 6. The valve of claim 1, wherein the valve actuator arrangement comprises a double acting solenoid. 7. The valve of claim 1, wherein the valve actuator arrangement comprises a first solenoid adjacent a first end of the valve body and a second solenoid adjacent a second end of the valve body. 8. The valve of claim 7, wherein when the first solenoid is energized the first solenoid applies the first momentary load on the valve spool to move the valve spool to the closed position, wherein when the second solenoid is energized the second solenoid applies the second momentary load on the valve spool to move the valve spool to the open position, and wherein both the first momentary load and the second momentary load are applied as tensile loads to the valve spool. 9. The valve of claim 8, further comprising a holding means to retain the valve spool at the closed position after the first momentary load on the valve spool has been released and to retain the valve spool at the open position after the second momentary load on the valve spool has been released. 10. The valve of claim 9, wherein the holding means comprises friction between at least one of the sealing members of the valve spool and the bore of the valve body. 11. The valve of claim 9, wherein the holding means comprises at least one detent between the valve spool and the valve body. 12. The valve of claim 1, wherein the first passage and the second passage of the valve body are offset from each other along the axis of the bore with the first passage positioned nearer to a first end of the valve body than the second passage and with the second passage positioned nearer to a second end of the valve body than the first passage. 13. The valve of claim 1, further comprising a first end piece mounted on a first end of the valve body and a second end piece mounted on a second end of the valve body, wherein the first chamber is further comprised by a first cavity within the first end piece and the third chamber is further comprised by a second cavity within the second end piece. 14. The valve of claim 13, wherein the valve actuator arrangement comprises a first solenoid mounted at least partially over the first end piece and a second solenoid mounted at least partially over the second end piece, wherein the third passage is at least partly comprised by the valve body, wherein the first chamber is connected to the third passage by a fourth passage comprised by the first end piece and the third chamber is connected to the third passage by a fifth passage comprised by the second end piece, and wherein at least one of the first end piece and the second end piece mounts at least one detent member to retain the valve spool after at least one of the solenoids has been de-energized. 15. A valve comprising: a valve body comprising a bore comprising an axis, a first passage open to the bore, and a second passage open to the bore;a valve spool comprising a first end and a second end, the valve spool at least partially positioned within the bore of the valve body and slidable along the axis of the bore, the valve spool comprising a first sealing region and a second sealing region, the sealing regions each being in sealing contact with the bore, the valve spool comprising a reduced-section region positioned between the first sealing region and the second sealing region;a first chamber comprised at least in part between the bore of the valve body and the valve spool adjacent the first end of the valve spool;a second chamber comprised at least in part between the bore of the valve body and the reduced-section region of the valve spool;a third chamber comprised at least in part between the bore of the valve body and the valve spool adjacent the second end of the valve spool;a third passage open to the first chamber and the third chamber;a first solenoid adjacent a first end of the valve body adapted to apply a first momentary load on the valve spool to move the valve spool to a closed position;a second solenoid adjacent a second end of the valve body adapted to apply a second momentary load on the valve spool to move the valve spool to an open position; anda first magnetic element and a second magnetic element, wherein the first magnetic element is mounted adjacent the first end of the valve spool and the second magnetic element is mounted adjacent the second end of the valve spool, wherein the first magnetic element is magnetically attracted by a first coil of the first solenoid when the first solenoid is energized and the second magnetic element is magnetically attracted by a second coil of the second solenoid when the second solenoid is energized, and wherein the magnetic elements comprise grooves to allow a second fluid to pass across the magnetic elements, the grooves being sized for the fluid and configured to customize a control time in response to a dynamic behavior property;wherein when the valve spool is at the open position the first passage and the second passage are both open to the second chamber thereby allowing a first fluid to pass between the first passage and the second passage;wherein when the valve spool is at the closed position the valve spool forms a barrier between the first passage and the second passage and thereby substantially prevents the first fluid from passing between the first passage and the second passage;wherein the valve spool comprises a first detent groove located at the first end and a second detent groove located at the second end, wherein the valve body comprises a first detent member holder located at a first end thereof and a second detent member holder located at a second end thereof, wherein a first detent member and a second detent member are located in the first and the second detent member holders respectively, wherein the first detent member is configured to engage the first detent groove when the valve spool is in an open position, wherein the second detent member is configured to engage the second detent groove when the valve spool is in closed position, wherein each of the first detent member and the second detent member comprises at least one ball that engages the first detent groove and the second detent groove respectively, wherein at least one of the first detent member holder and the second detent member holder comprises a sealable opening, and wherein the sealable opening is configured to change a volume of the second fluid in the first and the third chambers; andwherein the second fluid is transferred between the first chamber and the third chamber via the third passage when the valve spool is moved between the open position and the closed position. 16. The valve of claim 15, further comprising a first end piece mounted on a first end of the valve body and a second end piece mounted on a second end of the valve body, wherein the first chamber is further comprised by a first cavity within the first end piece and the third chamber is further comprised by a second cavity within the second end piece. 17. The valve of claim 16, wherein the first solenoid is mounted at least partially over the first end piece and the second solenoid is mounted at least partially over the second end piece, wherein the third passage is at least partly comprised by the valve body, and wherein the first chamber is connected to the third passage by a fourth passage comprised by the first end piece and the third chamber is connected to the third passage by a fifth passage comprised by the second end piece. 18. The valve of claim 17, wherein at least one of the first end piece and the second end piece mounts at least one detent member adapted to retain the valve spool at a position after at least one of the solenoids has been de-energized. 19. A method for controlling a flow of a fluid, the method comprising: customizing a control time to a dynamic property by providing a first magnetic element and a second magnetic element, the first magnetic element is mounted adjacent a first end of a valve spool and the second magnetic element is mounted adjacent a second end of the valve spool, the magnetic elements comprising grooves to allow an internal fluid to pass across the first magnetic element and the second magnetic element;receiving a fluid input at an input port open to a first passage into the valve body, the valve body comprising a bore and the valve spool at least partially positioned within the bore, and wherein the valve spool is slidable along an axis of the bore;directing the fluid input from the input port through the first passage into the bore, wherein directing the fluid input from the input port through the first passage into the bore comprises directing a portion of the fluid input through the grooves;blocking a flow of the fluid input to a second passage coupled to an output port when the valve spool is in a closed position, the second passage being offset from the first passage and locate on an opposite side of the axis of the bore, the closed position comprising a first end of the valve spool substantially situated within a first cavity open to the bore of the valve body and a sealing region of a second end of the valve spool in sealing contact with the bore substantially situated between the fluid input and the second passage, wherein the second end of the valve spool is coupled to the first end via a reduced-section region of the valve spool;applying a momentary load from a valve actuator arrangement comprising at least one solenoid to the valve spool to slide the valve spool to an open position, the open position comprising the second end of the valve spool substantially situated within a second cavity open to the bore of the valve body such that the reduced-section region of the valve spool permits a flow of the fluid input to the second passage;transferring a portion of an internal fluid between the first cavity and the second cavity via a connecting passage when sliding the valve spool from the closed position to the open position; anddirecting the fluid input from the bore through the second passage into the output port;wherein the valve spool comprises a first detent groove located at the first end and a second detent groove located at the second end, wherein the valve body comprises a first detent member holder located at a first end thereof and a second detent member holder located at a second end thereof, wherein a first detent member and a second detent member are located in the first and the second detent member holders respectively, wherein the first detent member is configured to engage the first detent groove when the valve spool is in an open position, wherein the second detent member is configured to engage the second detent groove when the valve spool is in closed position, wherein each of the first detent member and the second detent member comprises at least one ball that engage the first detent groove and the second detent groove respectively, wherein at least one of the first detent member holder and the second detent member holder comprises a sealable opening, and wherein the sealable opening is configured to change a volume of the internal fluid in the first and second cavities.
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