CA2215242A1 - An actuator using magnetic forces to reduce frictional forces - Google Patents
An actuator using magnetic forces to reduce frictional forces Download PDFInfo
- Publication number
- CA2215242A1 CA2215242A1 CA 2215242 CA2215242A CA2215242A1 CA 2215242 A1 CA2215242 A1 CA 2215242A1 CA 2215242 CA2215242 CA 2215242 CA 2215242 A CA2215242 A CA 2215242A CA 2215242 A1 CA2215242 A1 CA 2215242A1
- Authority
- CA
- Canada
- Prior art keywords
- valve
- seat
- moving
- rotary
- rotor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
- F16K31/06—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
- F16K31/08—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid using a permanent magnet
- F16K31/084—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid using a permanent magnet the magnet being used only as a holding element to maintain the valve in a specific position, e.g. check valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
- F16K3/02—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor
- F16K3/04—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor with pivoted closure members
- F16K3/10—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor with pivoted closure members with special arrangements for separating the sealing faces or for pressing them together
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
- F16K31/06—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
- F16K31/08—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid using a permanent magnet
- F16K31/082—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid using a permanent magnet using a electromagnet and a permanent magnet
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Magnetically Actuated Valves (AREA)
Abstract
An actuator for opening and closing a valve with less resistance. The actuator includes a rotor, a stator, a valve and a shaft. The shaft having a first and second end, and an axis extending longitudinally therethrough. The stator, having an electromagnet mounted thereon, and circumferentially mounted around the shaft that extends therethrough. The rotor, fixedly mounted circumferentially around the first end, and having a permanent magnet mounted adjacent to the electromagnet and spaced a first distance therefrom. The valve including a rotary valve and valve seat. The rotary valve, mounted circumferentially around and near the second end, having a valve opening therein. The valve seat, mounted adjacent the rotary valve, having a seat valve opening therein, and fixedly attached to the stator. There actuator is designed for axially moving the rotor from the first distance to a second greater distance from the stator and thereby moving the rotary valve further away from the valve seat, and then axially rotate the shaft to a second position that aligned the seat valve opening and the valve opening, and then moving the rotor from the second distance back to the first lesser distance.
Description
BACKGROUND OF THE INVENTIO~I
1. FIELD OF THE INVENTION
This inven~ion relates to actuators Particularly, there is an actuator tha~ uses preset axial magnelic forces bolh to reduce ~he force needed lo open the valve by 5 eliminating some frictional forces, and to increase the force used in maintaining the valve shut.
;!. DESCRIPTION OF THE RELATED ART
Various devices and methods of dealing with the complexities of rotary 10 actuators are legion. Examples of patents related to the present invention are as follows, and each patent is herein incorporated by reference for the supporting teachings U.S. pa~em no. 5,611,368 is a valve having magnetic force transmission apparatus .
U.S. patent no. 5,484,133 is a manual override sys~em for linear magne~ically operated valves.
U.S. pa~ent no. 5,372,351 is a manual override sys~em for rotary magnetically operated ~Jalves U.S. patem no. 5,356,112 is an electronically controlled valve having a totally 20 leakproof valve plug.
1. FIELD OF THE INVENTION
This inven~ion relates to actuators Particularly, there is an actuator tha~ uses preset axial magnelic forces bolh to reduce ~he force needed lo open the valve by 5 eliminating some frictional forces, and to increase the force used in maintaining the valve shut.
;!. DESCRIPTION OF THE RELATED ART
Various devices and methods of dealing with the complexities of rotary 10 actuators are legion. Examples of patents related to the present invention are as follows, and each patent is herein incorporated by reference for the supporting teachings U.S. pa~em no. 5,611,368 is a valve having magnetic force transmission apparatus .
U.S. patent no. 5,484,133 is a manual override sys~em for linear magne~ically operated valves.
U.S. pa~ent no. 5,372,351 is a manual override sys~em for rotary magnetically operated ~Jalves U.S. patem no. 5,356,112 is an electronically controlled valve having a totally 20 leakproof valve plug.
2 of 14 U.S. patent no. S,234,292 is a ro~ational control device.
U . S . patent no . 5, 259,41 5 is a magnetic valve .
U.S. patent no. 5,226,627 is a m~gnetic valve.
U.S. patent no. 4,906,880 is an electromagnetic valve h~ving reduced 5 hysteresis.
U.S. pa~ent no, 4,647,010 is a çombined torque motor and rotary flow control valve unit.
U.S. patent no. 4,496,134 is a rotary solenoid actuator.
U.S. patent no. 4,42~,5~8 is a proportional solenoid~
~0 U.S. pa~en~ no. 4,304,256 is a torque tr~nsmiKing assembly for rotary valve members .
U.S. patent no.4,299,252 is a permanent magnet boosted elec~romagnetic actuator .
U.S. patent no. 2,~i75,831 is a seatless valve.
The foregoing ~dt~;:l It::l reflect the state of the art of which the applicant is aware and are tendered w~th the view toward discharging applicants' acknowledged duty of candcr in disclosing inforrnation that may be pertinent in the examination of this application. It is respecffully stir~ tetl, however, that none of these patents teach or render obvious, singly or when considered in combination, applicant's claimed invention.
U . S . patent no . 5, 259,41 5 is a magnetic valve .
U.S. patent no. 5,226,627 is a m~gnetic valve.
U.S. patent no. 4,906,880 is an electromagnetic valve h~ving reduced 5 hysteresis.
U.S. pa~ent no, 4,647,010 is a çombined torque motor and rotary flow control valve unit.
U.S. patent no. 4,496,134 is a rotary solenoid actuator.
U.S. patent no. 4,42~,5~8 is a proportional solenoid~
~0 U.S. pa~en~ no. 4,304,256 is a torque tr~nsmiKing assembly for rotary valve members .
U.S. patent no.4,299,252 is a permanent magnet boosted elec~romagnetic actuator .
U.S. patent no. 2,~i75,831 is a seatless valve.
The foregoing ~dt~;:l It::l reflect the state of the art of which the applicant is aware and are tendered w~th the view toward discharging applicants' acknowledged duty of candcr in disclosing inforrnation that may be pertinent in the examination of this application. It is respecffully stir~ tetl, however, that none of these patents teach or render obvious, singly or when considered in combination, applicant's claimed invention.
3. PROBLEM WI~H THE RELATED ~RT
3 of 14 A common problem occurring during the ac~uation of actuators is that at~ached valves are tightly fitted together, which oreates large frictional forces. Therefore, a need exists to eliminate the frictional ~orces, created from having a tightly ~itted valve, that opposes the movement of the valve.
SUMMARY OF THE INVENT10~
It is a feature of the invention to provide an actuator that uses prese~ axial magne~ic forces both to reduce the force needed to open Ihe valve by eliminating10 some frictional forces, and to increase ~he force used in maintaining the valve shut.
A further feature of the illustrated embodimenl is to provide an ac~uator for opening and closing a valYe with less resistance. The actua~or includes a rotor, a staT~r, a valve and a shaft. The shaft having a first and ~econd end, and an axis extending longitudinally Iherethrough. The stator, having an eleclromagnet mounted 5 thereon, and circumferentially mounted around the shaft that extends therethrough. The rotor, fixedly mounted circumferentially around the first end, and having a perrnanent magnet rnounted adjacent to the electromagnet and spaced a first distance therefrom. The valve including a rotary valve and valve seat. The rotary valve, mounted circumferentially around and near the second end, having a valve opening therein. The valve seat, 20 mounted adjacent the rotary vaive, having a seat valve opening therein, and fixedly attached to the stator The actuator is designed for axially moving the rotor from the first 4 of 14 distance to a sec~nd greater distance from the stator and thereby moving the rotary vzlve fl~rther away from the valve seat, and then axially rotating the shaft to a secon~ position that aligns the seat valve opening and the valve opening, and then movlng the rotor from the second distance back to the first lesser distance.
The invenlion resides not in any one of Ihese fea~ures per se, but rather in thepar~icular combination of all of them herein disclosed and claimed. Those skilled in the art will appreciate that the conception, I-pon ~hich this disclosure is based, rnay readily be utilized as a basis for the designing of other structures, methods and systems for carrying out the several purposes of the present invention. Further, ~he abstract is neither intended to define the invention of the application, which is rneasured by the claims, neither is it intended to be limi~ing as to the scope of the invention in any way.
BRIEF DESCRIPTION OF T~E DRAWINGS
FIG. 1 is perspective exploded view of the preferred embodiment.
FIG. 2 is a cross seclion of one side of the preferred embodiment illustrating the closed valve position.
FIG. 3 is a cross section of one side of the preferred embodiment illustrating Ihe valve moving position.
FIG. 4 is a cross section of one side of ~he preferred embodiment illustrating the open valve position.
3 of 14 A common problem occurring during the ac~uation of actuators is that at~ached valves are tightly fitted together, which oreates large frictional forces. Therefore, a need exists to eliminate the frictional ~orces, created from having a tightly ~itted valve, that opposes the movement of the valve.
SUMMARY OF THE INVENT10~
It is a feature of the invention to provide an actuator that uses prese~ axial magne~ic forces both to reduce the force needed to open Ihe valve by eliminating10 some frictional forces, and to increase ~he force used in maintaining the valve shut.
A further feature of the illustrated embodimenl is to provide an ac~uator for opening and closing a valYe with less resistance. The actua~or includes a rotor, a staT~r, a valve and a shaft. The shaft having a first and ~econd end, and an axis extending longitudinally Iherethrough. The stator, having an eleclromagnet mounted 5 thereon, and circumferentially mounted around the shaft that extends therethrough. The rotor, fixedly mounted circumferentially around the first end, and having a perrnanent magnet rnounted adjacent to the electromagnet and spaced a first distance therefrom. The valve including a rotary valve and valve seat. The rotary valve, mounted circumferentially around and near the second end, having a valve opening therein. The valve seat, 20 mounted adjacent the rotary vaive, having a seat valve opening therein, and fixedly attached to the stator The actuator is designed for axially moving the rotor from the first 4 of 14 distance to a sec~nd greater distance from the stator and thereby moving the rotary vzlve fl~rther away from the valve seat, and then axially rotating the shaft to a secon~ position that aligns the seat valve opening and the valve opening, and then movlng the rotor from the second distance back to the first lesser distance.
The invenlion resides not in any one of Ihese fea~ures per se, but rather in thepar~icular combination of all of them herein disclosed and claimed. Those skilled in the art will appreciate that the conception, I-pon ~hich this disclosure is based, rnay readily be utilized as a basis for the designing of other structures, methods and systems for carrying out the several purposes of the present invention. Further, ~he abstract is neither intended to define the invention of the application, which is rneasured by the claims, neither is it intended to be limi~ing as to the scope of the invention in any way.
BRIEF DESCRIPTION OF T~E DRAWINGS
FIG. 1 is perspective exploded view of the preferred embodiment.
FIG. 2 is a cross seclion of one side of the preferred embodiment illustrating the closed valve position.
FIG. 3 is a cross section of one side of the preferred embodiment illustrating Ihe valve moving position.
FIG. 4 is a cross section of one side of ~he preferred embodiment illustrating the open valve position.
5 of 1 4 It is noted that the drawings o~ the inven~ion are not to scale The drawings aremerely schematic representations, not intended to portray specific parameter~ of the invention. The drawings are intended to depict only typical embodiments of the invention, and therefore should not be considered as limiting ~he scope of the invention. In the drawings, like numbering represents like elements between the dra~ings.
DE~AILED DESCRIPTION OF THE PREFERRED EMBODIMENT
The present invention provides an actua~or that uses preset axial magnetic forces bo~h to reduce ~he force needed to open the valve by eliminating some friclional forces, and to increase the force used in rn~intaining the valve shut.
Regarding Fig. 1, there is a preferred embodiment actuator 10 (also referred to as a valve device). In particular, actuator 10 includes a rotor 12, stator 14, shaft 16, and valve 18.
The rotor 12 includes a base pla~e 20, and permanent magnets 22. A thrust bearing 24, separates the rotor 12 from the stator 14. The stator includes an armature core 26, a coil 28, ~nd base plate 30. Between the stator and the valve is a spacer 32, and a collar 34 ~oth for spacing therebetween. The valve includes a rotary valve 36 with a rotary valve opening 38, a valve seat 40 with a fLxed valve opening 4~. The armature core 26 and coil 28 form an electromagnet 31.
Referring to Fig. 24, there is illustrated the three key positions of operation for the reduced friction actuator 10. Specifically, in Fig. 2, there is illustrated a closed valve 60f 14 C~5- 1 577 position 50. Where the rotary valve opening 38 is not aligned with the fixed valve openlng In Fig 3, there is illustrated a separated valve position 60. Where the rotary valve 36 is spaced from the valve seat 40 by air gap 62.
In Fig. 4, there is illustrated an open valve posltion 70. Where the rotor 12 has the two valve openings 38 and 42 aligned and the rotary v~lve 36 is again closely positioned next to the v~lve se~t.
In operation of the preferred embodiment, the valve is first in a closed position 50.
Where the rotary valve opening 38 is not aligned with the fixed valve opening 42 and the rotary valve 36 is tightly fit adjacent to the valve seat 40 as a result of the permanent magnet 22 attracting the non-energized armature core 26. In Fig. 3, the rotary valve 36 has been separated from the valve seat 40 as ~ result of sending a current through coil 28, which causes the armature core 26 to become a magnet having the same polarity as the adjacent permanent magnet 22, in th~ instant illustration both have ~ south "S" polarity.
In Fig 4, the open valve position 70 i~ created when the rotor 12 has rotated as a result of the repulsive and attractive magnetic forces between the permanent magnets 22 and oppositely polarized armature cores 26. Uniquely, as the rotor approaches the optimum magnetica11y attractive ~ositiun the axial displacement ~vill decrease to a point that allows the rotary valve 36 to tightly flt ~ cPnt the valve seat 40 7 of 1 4 Rem~rks About the Preferred Embodiment One of ordinary skill in the ar~ of designing and using actuator controlled valves will realize many advantages frorn stu~ying and using the preferred embodiment. For 5 exampie, since the rotary valve 36 separates from the valve seat 40 before rotating to an open position there is an elimination of the prior art frictional forces that opposed the rotation of the rotary valve 36. A skilled artisan will realize that the shaft is so mounted to allow axial displacement to allow for the up and down motion of the rotor and ~ttache~
valve Also, an artisan knows that the axial motion of the valve 36 will be directed along 10 the main axis of the shaft 16 It is easily understood that spacers ~2 determine the spacing between permanent magnets 22 and armature cores 26, and that the resultant magnetic forces therebe~Neen can be adjusted by changing the length of spacers 32. As a res~lt, thë length of spacers 32 will have a direct impact on the amount of pressure rotary valve 36 exerts on valve seat 40 in both the open and closed positions Furthermore, cc~llar 34 and spacers 32 are used to maintain a proper spacing between stator 14 and valve 18 during ~he axial motion of the rotary valve 36.
Of particular note, the preferred embodiment has a three step process for opening and closing the valve 18. The first separates the two valve parts, the second rotates the 20 rotary valve, the third forces the t~,vo valves parts together again. This sequence occurs during b~th the opening and closing of the valve 18.
8 of 14 Variations of the Preferred Ernbodirnent Although the illustrated ernbodiments discuss the arrangement of the actuator 10 5 using only ~NO armature cores 26, it is contemplated to use any number of armature cores wherein each adjacent core is oppositely polarized when the coils are energized Additionally, it is eq~ally contemplated to use the concept of the preferred embodiment in a linear actuator. Where the moving valve portion 36 will be disengaged from the fixed position val~re portion 40 when the repulsive forces are created between the rotor 12 and 0 stator 14. The preferred embodiment illustrates the starting position of the valve to be closed However, it is contemplated to have the valve star~ in the open position and move to the closed position The present embodiment shows the l~se of spacers 32 and collars 34 to maintain both the proper spacing between the stator and valve and the rotor and stator during any 5 resulting axial motion. However, there are many ~ays to provide this needed displacement during operation. ~or example7 one end of the shaft could be coupled in a retaining cavity that allows for a~cial displ~cP~il,ent, or the base plate 30 could be molded with an extension that allowed for needed axial motion but limited the axial displacernent of the rotary valve 36, like a tab extending downward therefrom. Therefore, any known device that limits the 20 axial but allows for rotational movement would work.
The current ei,lbo~li,nent shows a valve o~er,i".J on the rotary valYe, however there 9 of 14 Cl'S- I 577 are many ways to create an open and closed position. For example, the rotary valve 36 could be a thick spoke, like on a bike tire, that is positioned over the seat v~lve opening 42 to close the valve 18, and moved thereof when opening the valve 18 Therefore, any known valve device would work.
While the invention has been taught with specific reference to these embodiments, someone skilled in the art will recognize tha~ changes can ~e made in form and detail without departing from the spirit and the scope of the invention. The described embodiments are to be considered in all respects only as illustrative and not restrictive.
The scope of the invention is, there~ore, indicated by the ~ppended claims rather than by the description All ohanges that come within the meanlng and range of equivalency of the claims are to be embraced within their scope.
1 0 of 1 4
DE~AILED DESCRIPTION OF THE PREFERRED EMBODIMENT
The present invention provides an actua~or that uses preset axial magnetic forces bo~h to reduce ~he force needed to open the valve by eliminating some friclional forces, and to increase the force used in rn~intaining the valve shut.
Regarding Fig. 1, there is a preferred embodiment actuator 10 (also referred to as a valve device). In particular, actuator 10 includes a rotor 12, stator 14, shaft 16, and valve 18.
The rotor 12 includes a base pla~e 20, and permanent magnets 22. A thrust bearing 24, separates the rotor 12 from the stator 14. The stator includes an armature core 26, a coil 28, ~nd base plate 30. Between the stator and the valve is a spacer 32, and a collar 34 ~oth for spacing therebetween. The valve includes a rotary valve 36 with a rotary valve opening 38, a valve seat 40 with a fLxed valve opening 4~. The armature core 26 and coil 28 form an electromagnet 31.
Referring to Fig. 24, there is illustrated the three key positions of operation for the reduced friction actuator 10. Specifically, in Fig. 2, there is illustrated a closed valve 60f 14 C~5- 1 577 position 50. Where the rotary valve opening 38 is not aligned with the fixed valve openlng In Fig 3, there is illustrated a separated valve position 60. Where the rotary valve 36 is spaced from the valve seat 40 by air gap 62.
In Fig. 4, there is illustrated an open valve posltion 70. Where the rotor 12 has the two valve openings 38 and 42 aligned and the rotary v~lve 36 is again closely positioned next to the v~lve se~t.
In operation of the preferred embodiment, the valve is first in a closed position 50.
Where the rotary valve opening 38 is not aligned with the fixed valve opening 42 and the rotary valve 36 is tightly fit adjacent to the valve seat 40 as a result of the permanent magnet 22 attracting the non-energized armature core 26. In Fig. 3, the rotary valve 36 has been separated from the valve seat 40 as ~ result of sending a current through coil 28, which causes the armature core 26 to become a magnet having the same polarity as the adjacent permanent magnet 22, in th~ instant illustration both have ~ south "S" polarity.
In Fig 4, the open valve position 70 i~ created when the rotor 12 has rotated as a result of the repulsive and attractive magnetic forces between the permanent magnets 22 and oppositely polarized armature cores 26. Uniquely, as the rotor approaches the optimum magnetica11y attractive ~ositiun the axial displacement ~vill decrease to a point that allows the rotary valve 36 to tightly flt ~ cPnt the valve seat 40 7 of 1 4 Rem~rks About the Preferred Embodiment One of ordinary skill in the ar~ of designing and using actuator controlled valves will realize many advantages frorn stu~ying and using the preferred embodiment. For 5 exampie, since the rotary valve 36 separates from the valve seat 40 before rotating to an open position there is an elimination of the prior art frictional forces that opposed the rotation of the rotary valve 36. A skilled artisan will realize that the shaft is so mounted to allow axial displacement to allow for the up and down motion of the rotor and ~ttache~
valve Also, an artisan knows that the axial motion of the valve 36 will be directed along 10 the main axis of the shaft 16 It is easily understood that spacers ~2 determine the spacing between permanent magnets 22 and armature cores 26, and that the resultant magnetic forces therebe~Neen can be adjusted by changing the length of spacers 32. As a res~lt, thë length of spacers 32 will have a direct impact on the amount of pressure rotary valve 36 exerts on valve seat 40 in both the open and closed positions Furthermore, cc~llar 34 and spacers 32 are used to maintain a proper spacing between stator 14 and valve 18 during ~he axial motion of the rotary valve 36.
Of particular note, the preferred embodiment has a three step process for opening and closing the valve 18. The first separates the two valve parts, the second rotates the 20 rotary valve, the third forces the t~,vo valves parts together again. This sequence occurs during b~th the opening and closing of the valve 18.
8 of 14 Variations of the Preferred Ernbodirnent Although the illustrated ernbodiments discuss the arrangement of the actuator 10 5 using only ~NO armature cores 26, it is contemplated to use any number of armature cores wherein each adjacent core is oppositely polarized when the coils are energized Additionally, it is eq~ally contemplated to use the concept of the preferred embodiment in a linear actuator. Where the moving valve portion 36 will be disengaged from the fixed position val~re portion 40 when the repulsive forces are created between the rotor 12 and 0 stator 14. The preferred embodiment illustrates the starting position of the valve to be closed However, it is contemplated to have the valve star~ in the open position and move to the closed position The present embodiment shows the l~se of spacers 32 and collars 34 to maintain both the proper spacing between the stator and valve and the rotor and stator during any 5 resulting axial motion. However, there are many ~ays to provide this needed displacement during operation. ~or example7 one end of the shaft could be coupled in a retaining cavity that allows for a~cial displ~cP~il,ent, or the base plate 30 could be molded with an extension that allowed for needed axial motion but limited the axial displacernent of the rotary valve 36, like a tab extending downward therefrom. Therefore, any known device that limits the 20 axial but allows for rotational movement would work.
The current ei,lbo~li,nent shows a valve o~er,i".J on the rotary valYe, however there 9 of 14 Cl'S- I 577 are many ways to create an open and closed position. For example, the rotary valve 36 could be a thick spoke, like on a bike tire, that is positioned over the seat v~lve opening 42 to close the valve 18, and moved thereof when opening the valve 18 Therefore, any known valve device would work.
While the invention has been taught with specific reference to these embodiments, someone skilled in the art will recognize tha~ changes can ~e made in form and detail without departing from the spirit and the scope of the invention. The described embodiments are to be considered in all respects only as illustrative and not restrictive.
The scope of the invention is, there~ore, indicated by the ~ppended claims rather than by the description All ohanges that come within the meanlng and range of equivalency of the claims are to be embraced within their scope.
1 0 of 1 4
Claims (5)
1. An actuator for opening and closing a valve, comprising;
a) a shaft having a first and second end, and an axis extending longitudinally therethrough;
b) a stator, having an electromagnet mounted thereon, and circumferentially mounted around the shaft that extends therethrough;
c) a rotor, fixedly mounted circumferentially around the first end, and having a permanent magnet mounted adjacent to the electromagnet and spaced a first distance therefrom;
d) a rotary valve, mounted circumferentially around and near the second end, having a valve opening therein;
e) a valve seat, mounted adjacent the rotary valve, having a seat valve opening therein, and fixedly attached to the stator; and f) means for axially moving the rotor from the first distance to a second greater distance from the stator and thereby moving the rotary valve further away from the valve seat, and then axially rotate the shaft to a second position that aligned the seat valve opening and the valve opening, and then moving the rotor from the second distance back to the first lesser distance.
11 of 14
a) a shaft having a first and second end, and an axis extending longitudinally therethrough;
b) a stator, having an electromagnet mounted thereon, and circumferentially mounted around the shaft that extends therethrough;
c) a rotor, fixedly mounted circumferentially around the first end, and having a permanent magnet mounted adjacent to the electromagnet and spaced a first distance therefrom;
d) a rotary valve, mounted circumferentially around and near the second end, having a valve opening therein;
e) a valve seat, mounted adjacent the rotary valve, having a seat valve opening therein, and fixedly attached to the stator; and f) means for axially moving the rotor from the first distance to a second greater distance from the stator and thereby moving the rotary valve further away from the valve seat, and then axially rotate the shaft to a second position that aligned the seat valve opening and the valve opening, and then moving the rotor from the second distance back to the first lesser distance.
11 of 14
2. A valve device that opens and closes a valve opening, comprising:
a) a fixed valve seat;
b) a movable valve that is positioned and designed to move from a first position to a second position that will open and close the valve opening;
c) an actuator, coupled to the movable valve, for moving the movable valve between the open and closed positions by first forcing the movable valve away from the fixed valve, moving the movable valve to either the open or closed position, and then forcing the movable valve toward the fixed valve.
a) a fixed valve seat;
b) a movable valve that is positioned and designed to move from a first position to a second position that will open and close the valve opening;
c) an actuator, coupled to the movable valve, for moving the movable valve between the open and closed positions by first forcing the movable valve away from the fixed valve, moving the movable valve to either the open or closed position, and then forcing the movable valve toward the fixed valve.
3. The valve device of claim 2, wherein the actuator is a rotary actuator and the movable valve is a rotary movable valve.
4. The valve device of claim 3, wherein the actuator further comprising:
a) a shaft having a first and second end, and an axis extending longitudinally therethrough;
b) a stator, having an electromagnet mounted thereon, and circumferentially mounted around the shaft that extends therethrough;
c) a rotor, fixedly mounted circumferentially around the first end, and having a permanent magnet mounted adjacent to the electromagnet and spaced a first distance therefrom;
d) a rotary valve, mounted circumferentially around and near the second end, having a valve opening therein;
12 of 14 e) a valve seat, mounted adjacent the rotary valve, having a seat valve opening therein, and fixedly attached to the stator.
a) a shaft having a first and second end, and an axis extending longitudinally therethrough;
b) a stator, having an electromagnet mounted thereon, and circumferentially mounted around the shaft that extends therethrough;
c) a rotor, fixedly mounted circumferentially around the first end, and having a permanent magnet mounted adjacent to the electromagnet and spaced a first distance therefrom;
d) a rotary valve, mounted circumferentially around and near the second end, having a valve opening therein;
12 of 14 e) a valve seat, mounted adjacent the rotary valve, having a seat valve opening therein, and fixedly attached to the stator.
5. The valve device of claim 4, further comprising:
moving means for axially moving the rotor from the first distance to a second greater distance from the stator and thereby moving the rotary valve further away from the valve seat, and then axially rotate the shaft to a second position that aligned the seat valve opening and the valve opening, and then moving the moving the rotor from the second distance back to the first lesser distance.
13 of 14
moving means for axially moving the rotor from the first distance to a second greater distance from the stator and thereby moving the rotary valve further away from the valve seat, and then axially rotate the shaft to a second position that aligned the seat valve opening and the valve opening, and then moving the moving the rotor from the second distance back to the first lesser distance.
13 of 14
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2215242 CA2215242A1 (en) | 1997-09-11 | 1997-09-11 | An actuator using magnetic forces to reduce frictional forces |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2215242 CA2215242A1 (en) | 1997-09-11 | 1997-09-11 | An actuator using magnetic forces to reduce frictional forces |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2215242A1 true CA2215242A1 (en) | 1999-03-11 |
Family
ID=4161446
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2215242 Abandoned CA2215242A1 (en) | 1997-09-11 | 1997-09-11 | An actuator using magnetic forces to reduce frictional forces |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2215242A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006095087A1 (en) * | 2005-03-09 | 2006-09-14 | Valeo Systemes De Controle Moteur | Exhaust gas recycling device comprising a flow regulating and selectively connecting valve |
| WO2006095088A1 (en) * | 2005-03-09 | 2006-09-14 | Valeo Systemes De Controle Moteur | Dispositif de recirculation de gaz d’echappement comportant une vanne ayant un element de regulation decollable de son siege |
| CN114593222A (en) * | 2022-03-02 | 2022-06-07 | 苏州市职业大学 | Water-saving tap |
-
1997
- 1997-09-11 CA CA 2215242 patent/CA2215242A1/en not_active Abandoned
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006095087A1 (en) * | 2005-03-09 | 2006-09-14 | Valeo Systemes De Controle Moteur | Exhaust gas recycling device comprising a flow regulating and selectively connecting valve |
| WO2006095088A1 (en) * | 2005-03-09 | 2006-09-14 | Valeo Systemes De Controle Moteur | Dispositif de recirculation de gaz d’echappement comportant une vanne ayant un element de regulation decollable de son siege |
| FR2883038A1 (en) * | 2005-03-09 | 2006-09-15 | Valeo Sys Controle Moteur Sas | EXHAUST GAS RECIRCULATION DEVICE COMPRISING A VALVE HAVING A DECOLTABLE REGULATION OF ITS SEAT |
| FR2883037A1 (en) * | 2005-03-09 | 2006-09-15 | Valeo Sys Controle Moteur Sas | EXHAUST GAS RECIRCULATION DEVICE HAVING A FLOW CONTROL VALVE AND SELECTIVE CONNECTION |
| CN114593222A (en) * | 2022-03-02 | 2022-06-07 | 苏州市职业大学 | Water-saving tap |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5842680A (en) | Actuator using magnetic forces to reduce frictional forces | |
| US5121018A (en) | Latching brake using permanent magnet | |
| EP0796402B1 (en) | Hinged armature electromagnetically actuated valve | |
| US5213307A (en) | Gastight manually-operated valve | |
| WO1995034903A1 (en) | Device for actuating a control member | |
| MXPA05011345A (en) | Electromagnetic valve actuator. | |
| JP4788091B2 (en) | Shift actuator for transmission | |
| EP1509716B1 (en) | Pivoting electromagnetic actuator and integrated actuator and fluid flow control valve | |
| CA2215242A1 (en) | An actuator using magnetic forces to reduce frictional forces | |
| JP2000240474A (en) | Throttle valve control device for internal combustion engine | |
| US5870010A (en) | Actuator with minimized auxiliary magnet, and throttle device provided with such an actuator | |
| JP3280536B2 (en) | Actuator | |
| JP4120201B2 (en) | Shift actuator for transmission | |
| US6431519B1 (en) | Axially rotated valve actuation system | |
| GB2290911A (en) | Rotary electromagnetic actuator | |
| CN107013344B (en) | Throttle valve drive actuator for engine | |
| JP4258982B2 (en) | Shifting operation device | |
| GB2062175A (en) | Solenoid-operated valve | |
| EP0761034B1 (en) | Electromagnetically controlled gear engagement mechanism integrated with a magnetic hysteresis slip clutch | |
| EP3352333B1 (en) | Reluctance-type rotary actuators | |
| JP3060641B2 (en) | Rotary solenoid | |
| JPH06235334A (en) | Throttle valve control device | |
| JP4304880B2 (en) | Shifting operation device | |
| JP3242699B2 (en) | Fluid valve | |
| GB2289319A (en) | Flow control valve |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| FZDE | Dead |