IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0577852
(1984-02-07)
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발명자
/ 주소 |
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출원인 / 주소 |
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대리인 / 주소 |
Barnes, Kisselle, Raisch, Choate, Whittemore & Hulbert
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인용정보 |
피인용 횟수 :
10 인용 특허 :
2 |
초록
▼
A solenoid valve comprising a housing including a first transverse wall, a first axial extension extending from the transverse wall, and an integral peripheral wall extending axially in the opposite direction from the periphery of the transverse wall. A center pole member includes a pole extending a
A solenoid valve comprising a housing including a first transverse wall, a first axial extension extending from the transverse wall, and an integral peripheral wall extending axially in the opposite direction from the periphery of the transverse wall. A center pole member includes a pole extending axially within the peripheral wall of the housing and includes a second transverse wall extending radially outwardly into engagement with the peripheral wall. The center pole includes an axial extension extending in the opposite direction from the first axial extension. A coil surrounds the pole piece. The axial extensions of the housing include axial openings and the center pole includes an axial opening aligned with the openings of the axial extensions. A ball valve has limited axial movement between the seats on the center pole and second axial extension. A groove is formed at the area of juncture of the center pole and the second transverse wall and a plurality of axially extending passages extend from the groove to the periphery of the second axial extension.
대표청구항
▼
1. A normally open three way solenoid valve comprising a housing including a first transverse wall of magnetic material, a first axial extension extending from said transverse wall in one direction, a peripheral wall of magnetic material extending axially in the opposite direction from the peri
1. A normally open three way solenoid valve comprising a housing including a first transverse wall of magnetic material, a first axial extension extending from said transverse wall in one direction, a peripheral wall of magnetic material extending axially in the opposite direction from the periphery of said transverse wall, a second transverse wall of magnetic material extending radially outwardly into engagement with the peripheral wall of said housing, a center pole of magnetic material extending axially from said second transverse all within said peripheral wall of said housing, said center pole including a second axial extension of magnetic material extending in the opposite direction from said axial extension of said housing, said transverse walls, peripheral wall and center pole defining a space, a coil positioned in said space surrounding said pole, said second axial extension and first transverse wall including an axial opening, the end of the center pole within said housing defining a first seat, a non-magnetic insert in said first axial extension of said housing defining a second seat and having an opening, said first transverse wall and said first axial extension defining a cavity, a ball of magnetic material interposed between said first and second seats and having limited axial movement between said seats, the major portion of said ball extending into said cavity adjacent said second seat in said first axial extension, said coil having portions spaced from the periphery of said center pole and defining a passageway, a circumferential groove at the area of juncture of said center pole and transverse wall of said center pole, said groove facing axially toward said passageway and communicating with said passageway, and a plurality of circumferentially spaced axial passages spaced radially outwardly from said passageway a distance such that the passages do not intersect said passageway, said passages intersecting said groove thereby providing communication with said passage, said passages extending from said groove to the exterior of said second axial extension such that when fluid is applied through the axial opening of said center pole and the coil is de-energized, fluid forces the ball against the second seat of said first axial extension and fluid flows through the axial opening of said second axial extension past said first seat about the pole to the annular groove and thereafter outwardly through the passages, and when the coil is energized, the ball is drawn toward the pole to seal against the first seat and permit flow through the axial opening of said first axial extension about the ball and the periphery of the pole and through the passages. 2. The solenoid valve set forth in claim 1 wherein said passageway between said coil and said center pole is annular. 3. The solenoid valve set forth in claim 1 wherein said pole includes flat surfaces spaced from said coil defining a plurality of passageways. 4. The solenoid valve set forth in claim 1 wherein the clearance between the ball when it is in engagement with one seat and the other seat ranges between 0.008 inch and 0.030 inch. 5. The solenoid valve set forth in claim 1 including a plurality of axially extending grooves in said cavity in said first axial extension about said ball providing communication between said passageway about said pole and said axial opening in said first axial extension. 6. A normally open three way solenoid valve comprising a housing including a first transverse wall of magnetic material, an integral first axial extension of magnetic material extending from said transverse wall in one direction, an integral peripheral wall of magnetic material extending axially in the opposite direction from the periphery of said transverse wall, a center pole of magnetic material extending axially within said peripheral wall of said housing, said center pole including an integral transverse wall extending radially outwardly into engagment with the peripheral wall of said housing, said center pole including an integral second axial extension of magnetic material extending in the opposite direction from said axial extension of said housing, said transverse walls, peripheral wall and center pole defining a space, a coil positioned in said space and surrounding said pole, said second axial extension and first transverse wall of said housing including an axial opening, the end of the center pole within said housing defining a first seat, a non-magnetic insert in said first axial extension in said housing defining a second seat and having an opening, said first transverse wall and said first axial extension defining a cavity, a ball of magnetic material interposed between said first and second seats and having limited axial movement between said seats, the major portion of said ball extending into said cavity adjacent said second seat in said first axial extension, said coil having portions spaced from the periphery of said center pole and defining a passageway, a circumferential groove at the area of juncture of said center pole and transverse wall of said center pole, said groove facing axially toward said passageway and communicating with said passageway, and a plurality of circumferentially spaced axial passages spaced radially outwardly from said passageway a distance such that the passages do not intersect said passageway, said passages intersecting said groove thereby providing communication with said passageway, said passages extending from said groove to the exterior of said second axial extension such that when fluid is applied through the axial opening of said center pole and the coil is de-energized, fluid forces the ball against the second seat of said first axial extension and fluid flows through axial opening of said second extension past said first seat about the pole to the annular groove and thereafter outwardly through the passages, and when the coil is energized, the ball is drawn toward the pole to seal against the first seat and permit flow through the axial opening of said first axial extension about the ball and the periphery of the pole and through the axial passages. 7. The solenoid valve set forth in claim 6 wherein said passageway between said coil and said center pole is annular. 8. The solenoid valve set forth in claim 6 wherein said pole includes flat surfaces spaced from said coil defining a plurality of passageways. 9. The solenoid valve set forth in claim 6 wherein the clearance between the ball when it is in engagement with one seat and the other seat ranges between 0.008 inch and 0.030 inch. 10. The solenoid valve set forth in claim 9 including a plurality of axially extending grooves in said cavity in said first axial extension about said ball providing communication between said passageway about said pole and said axial opening in said first axial extension.
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