Fuel dispenser filter with removable filter media
View Patent ↗A fuel dispenser filter for filtering fuel is adapted to be connected to a support in a fuel distribution system. The filter comprises a housing including an adaptor constructed and arranged to be secured to the support and a bowl operatively connected to the adaptor. A stud/spacer is secured in the adaptor. The stud/spacer defines a centrally disposed outlet flow passage and outwardly disposed inlet flow passages. A sleeve member is movably supported in the adaptor between the stud/spacer and the adaptor. The sleeve member is constructed and arranged to open and close the fuel flow through the inlet flow passages. A filter assembly including filter media is provided in the bowl for filtering the fuel passing through the filter. When the bowl is firmly engaged with the adaptor, the sleeve member is moved to open position to permit the flow of fuel through the filter and when the bowl is removed from the adaptor, the sleeve member is moved to a closed position to stop the flow of fuel. A spring is provided to bias the sleeve member to the closed position when the bowl is removed from the adaptor. Various seals are provided within the filter to confine fuel flow to the desired flow paths.
1. A fuel dispenser filter for filtering fuel adapted to be connected to a support, said filter comprising an adaptor means constructed and arranged to be secured to the support, flow passage means formed in the adaptor means, an outlet flow passage formed in the adaptor means, said adaptor means including a longitudinally elongated stud spacer, the stud spacer defining the outlet flow passage and being open at its ends, the stud spacer being adapted to be connected at one end to the adaptor means and being open at the opposite end, valve means for controlling the flow of fuel through the flow passage means, said valve means comprising a sleeve member movably mounted on the stud spacer and movable to a first position to stop fuel flow and movable to a second position to permit fuel flow, said stud spacer having a recess in the outer surface thereof, and spider means retained in the recess, said spider means having projections thereon for engaging the sleeve member and guiding movement of the sleeve member, a bowl detachably secured to the adaptor means, filter means including filter media for filtering particulate from the fuel passing through the filter, whereby, when the bowl is secured to the adaptor means and the filter media is in the bowl, the valve means will be opened and fuel can flow through the flow passage means to the filter media and exit from the filter through the outlet passage and when the bowl is separated from the adaptor means for replacement of the filter media, the valve means will be closed to block fuel flow through the flow passage means.
2. A fuel dispenser filter as in claim 1 , wherein the filter means comprises a perforate core having the filter media carried thereon.
3. A fuel dispenser filter as in claim 2 , wherein the filter media comprises pleated material and a layer of water sensing material is laminated to the exterior surface pleated material.
4. A fuel dispenser filter as in claim 3 , wherein the water sensing material is a water absorbent polyacrylate.
5. A fuel dispenser filter as in claim 2 , wherein the perforate core has an outwardly extending flange at the end proximate the adaptor means for directing fuel flow toward the outer surface of the filter media and preventing fuel flow from pushing the filter media off the core.
6. A fuel dispenser filter as in claim 2 , wherein the perforate core has means defining a chamber formed thereon for retaining a phase separation chemical.
7. A fuel dispenser filter as in claim 6 , wherein the means defining a chamber comprises a second core disposed concentric to the first core.
8. A fuel dispenser filter as in claim 7 , wherein the means defining a chamber includes a porous layer on the exterior of the first core and a porous layer on the interior of the second core.
9. A fuel dispenser filter as in claim 6 , wherein the core is provided with a retainer and a screen is provided in the retainer to help remove large particulate from the fuel.
10. A fuel dispenser filter as in claim 6 , wherein the phase separation chemical comprises a water soluble resin and hydroxyethylcellulose.
11. A fuel dispenser filter as in claim 6 , wherein the phase separation chemical comprises a water soluble resin and an agglomerated hydroxyethylcellulose.
12. A fuel dispenser filter as in claim 1 , wherein said opposite end of the stud spacer is provided with a recess, and the filter media has a seal at the end adjacent the stud spacer engaging in the recess in the stud spacer for sealing fuel flow from between the seal of the filter media and the stud spacer.
13. A fuel dispenser filter as in claim 12 , wherein the seal is annular and is tapered to the end and the recess is annular and has a complementary shape to the seal.
14. A fuel dispenser filter as in claim 1 , including a resilient means for biasing the sleeve member toward the second position to block fluid flow through the flow passage means.
15. A fuel dispenser filter as in claim 1 , wherein the resilient means comprises a coil spring operative between the adaptor means and the stud spacer.
16. A fuel dispenser filter as in claim 1 , wherein the sleeve member is slidably mounted on the stud spacer, whereby when the bowl is removed from the adaptor means, the sleeve member will block the flow passage means.
17. A fuel dispenser filter for filtering fuel adapted to be connected to a support, said filter comprising a housing including an adaptor constructed and arranged to be secured to the support and a bowl operatively connected to the adaptor, a stud spacer secured in the adaptor, the stud spacer defining a centrally disposed outlet flow passage and outwardly disposed inlet flow passages, a sleeve member movably supported in the adaptor between the stud/spacer and the adaptor, the sleeve member being constructed and arranged to open and close the fuel flow through the inlet flow passages, said sleeve member being slidably carried on the stud spacer, said stud spacer including a valve seat, a surface of the sleeve member cooperating with the valve seat to stop the flow of fuel through the inlet flow passages, said stud spacer having a recess in the outer surface thereof, and a spider retained in the recess, said spider having spaced projections thereon for engaging the sleeve member and guiding the movement of the sleeve member, and filter means including filter media for filtering the fuel passing through the filter, whereby, when the bowl is firmly engaged with the adaptor and the filter media is in place, the sleeve member is moved to open position to permit the flow of fuel and when the bowl is removed from the adaptor, the sleeve member is moved to a closed position to stop the flow of fuel.
18. A fuel dispenser filter as in claim 17 , including a spring disposed between the adaptor and the sleeve member for urging the sleeve member to the closed position when the bowl is removed from the adaptor.
19. A fuel dispenser filter as in claim 17 , wherein the filter means comprises a perforate core made of plastic, the filter media being carried on the core, the core having an outwardly extending flange at the end proximate the adaptor for directing fuel flow toward the outer surface of the filter media.
20. A fuel dispenser filter as in claim 17 , wherein the valve seat comprises an O-ring seated in a recess in the stud spacer.
21. A fuel dispenser filter as in claim 17 , wherein the spider retained in the recess is annular.
22. A fuel dispenser filter as in claim 21 , wherein the spider is made from plastic material in the form of a snap ring.
23. A fuel dispenser filter as in claim 17 , wherein the filter media comprises pleated material and a layer of water sensing material is laminated to the exterior surface pleated material.
24. A fuel dispenser filter as in claim 23 , wherein the water sensing material is a water absorbent polyacrylate.
25. A fuel dispenser filter as in claim 19 , wherein the perforate core has means defining a chamber formed thereon for retaining a phase separation chemical.
26. A fuel dispenser filter as in claim 25 , wherein the phase separation chemical comprises a water soluble resin and hydroxyethylcellulose.
27. A fuel dispenser filter as in claim 25 , wherein the phase separation chemical comprises a water soluble resin and an agglomerated hydroxyethylcellulose.
28. A fuel dispenser filter for filtering fuel adapted to be connected to a support, said filter comprising an adaptor means constructed and arranged to be secured to the support, flow passage means formed in the adaptor means, an outlet flow passage formed in the adaptor means, valve means for controlling the flow of fuel through the flow passage means, a bowl detachably secured to the adaptor means, filter means including filter media for filtering particulate from the fuel passing through the filter, the filter means comprising a perforate core having the filter media carried thereon, said perforate core having means defining a chamber for retaining a phase separation chemical, said phase separation chemical comprises a water soluble resin and hydroxyethylcellulose, whereby, when the bowl is secured to the adaptor means and the filter media is in the bowl, the valve means will be opened and fuel can flow through the flow passage means to the filter media and exit from the filter through the outlet passage and when the bowl is separated from the adaptor means for replacement of the filter media, the valve means will be closed to block fuel flow through the flow passage means.
29. A fuel dispenser filter for filtering fuel as in claim 28 , wherein said hydroxyethyl cellulose is an agglomerated hydroxethylcellulose.