[미국특허]
Z-filter media pack arrangement; and, methods
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
B01D-046/00
B29D-099/00
B01D-025/00
B01D-046/54
B01D-046/52
출원번호
US-0403674
(2017-01-11)
등록번호
US-RE46700
(2018-02-06)
발명자
/ 주소
Schrage, Kevin
Lensing, Eugene
Rahlf, Jeff
Bishop, Wayne
Reichter, Gregory
Nelson, Benny
Spears, Rodger
Crenshaw, Bruce
Kladnitsky, Vladimir
출원인 / 주소
Donaldson Company, Inc.
대리인 / 주소
Merchant & Gould, P.C.
인용정보
피인용 횟수 :
0인용 특허 :
89
초록▼
Z-filter media pack arrangements and methods for providing them are described. The preferred arrangements have a cured-in-place jacket around an outside of a coiled z-filter media combination. The preferred cured-in-place jacket is a mold-in-place overmold which includes, integral therein, a housing
Z-filter media pack arrangements and methods for providing them are described. The preferred arrangements have a cured-in-place jacket around an outside of a coiled z-filter media combination. The preferred cured-in-place jacket is a mold-in-place overmold which includes, integral therein, a housing seal arrangement. Preferably a cured-in-place center core is used, most preferably one that has opposite concave ends with seal arrangements configured to seal a lead end portion of the coiled z-filter media combination.
대표청구항▼
1. An air filter cartridge comprising: (a) a coiled media combination comprising a fluted sheet secured to a facing sheet and defining a set of inlet flutes and a set of outlet flutes extending between first and second, opposite, media combination flow ends; the coiled media combination defining: (i
1. An air filter cartridge comprising: (a) a coiled media combination comprising a fluted sheet secured to a facing sheet and defining a set of inlet flutes and a set of outlet flutes extending between first and second, opposite, media combination flow ends; the coiled media combination defining: (i) a coil having a center extending between the first and second, opposite, media combination flow ends and an outer sidewall extending between the first and second, opposite, media combination flow ends; and,(ii) a media combination lead end positioned inside of the coil center; and,(b) a mold-in-place center resulting from putting a sealant material into an open end of the center of the coil and allowing the sealant to seal at least a portion of the lead end and to close the center against air flow therethrough. 2. An air filter cartridge according to claim 1 wherein: (a) the mold-in-place center has opposite ends at least one of which has an axially, outwardly, projecting end skirt to seal a portion of the lead end. 3. An air filter cartridge according to claim 1 wherein: (a) the mold-in-place center is formed from a resin that increases in volume by at least 20% during cure. 4. An air filter cartridge according to claim 1 wherein: (a) the mold-in-place center is formed from a resin that increases in volume by at least 40% during cure. 5. An air filter cartridge according to claim 1 wherein: (a) the mold-in-place center is formed from a resin that increases in volume by at least 50% during cure. 6. An air filter cartridge according to claim 1 wherein: (a) the mold-in-place center comprises a foamed polyurethane core formed from a resin that increases in volume by at least 20% during core. 7. An air filter cartridge according to claim 1 wherein: (a) the center has a density of no greater than 0.24 g/cc. 8. An air filter cartridge according to claim 1 wherein: (a) the coiled media combination has a circular perimeter shape. 9. An air filter cartridge according to claim 1 wherein: (a) a housing seal arrangement is positioned secured to the media packcombination. 10. An air filter cartridge according to claim 9 wherein: (a) the housing seal arrangement extends around the media packcombination. 11. An air filter cartridge according to claim 10 wherein: (a) the housing seal arrangement comprises a mold-in-place seal positioned on an outside of the media packcombination. 12. An air filter cartridge according to claim 11 wherein: (a) the housing seal arrangement comprises an axial pinch seal. 13. An air filter cartridge according to claim 9 wherein: (a) the housing seal arrangement includes a mold-in-place seal member. 14. An air filter cartridge according to claim 9 wherein: (a) the housing seal arrangement comprises an axial pinch seal. 15. An air filter cartridge according to claim 14 wherein: (a) the axial pinch seal has opposite housing engagement surfaces spaced at least 4 mm apart. 16. A method of forming an air filter cartridge; the method comprising: (a) coiling a strip of fluted media secured to facing media to define a media combination comprising: (i) inlet and outlet flutes;(ii) a coil center; and,(iii) a media combination lead end positioned in the coil center; and,(b) molding a molded-in-place center within an end of the coil center; (i) the step of molding comprising putting a sealant material in an end of the coil center, after the step of coiling, and molding the sealant material to seal at least a portion of a lead end and to seal the center against air flow therethrough. 17. A method according to claim 16 wherein: (a) the step of molding comprises using a resin that increases in volume by at least 40% during cure. 18. A method according to claim 16 wherein: (a) the step of molding comprises using a resin that increases in volume by at least 50% during cure. 19. A method according to claim 16 wherein: (a) the step of molding comprises curing a polyurethane resin. 20. An air filter cartridge according to claim 16 wherein: (a) the fluted sheet is connected to the facing sheet with sonic welding. 21. An air filter cartridge according to claim 1 wherein: (a) the coiled media includes sonically welded media therein. 22. An air filter cartridge according to claim 1 wherein: (a) the mold-in-place center comprises a mold-in-place center core is configured to extend along at least 80% of a lead end seal length. 23. An air filter cartridge according to claim 1 wherein: (a) the mold-in-place center is formed from a resin that will rise during cure. 24. A method according to claim 16 wherein: (a) the step of molding includes projecting a projection on a mold into the coil center. 25. A method according to claim 16 wherein: (a) the mold-in-place center is formed from a resin that will rise during cure. 26. A method according to claim 16 wherein: (a) the mold-in-place center is formed from a resin that will increase in volume by at least 40% during cure. 27. An air filter cartridge comprising: (a) a coiled media combination comprising a fluted sheet secured to a facing sheet and defining a set of inlet flutes and a set of outlet flutes and defining first and second, opposite, media combination flow ends; the coiled media combination defining a coil having a center extending between the first and second, opposite, media combination flow ends and an outer sidewall extending between the first and second, opposite, media combination flow ends; and,(b) a mold-in-place center resulting from putting at least a portion of sealant material through an open end of the center of the coil and allowing the sealant to seal and close the center against air flow therethrough. 28. An air filter cartridge according to claim 27 wherein: (a) the mold-in-place center is formed from a resin that increases in volume by at least 20% during cure. 29. A method of forming an air filter cartridge; the method comprising: (a) coiling a strip of fluted media secured to facing media to define a media combination comprising: (i) inlet and outlet flutes; and(ii) a coil center; and(b) molding a molded-in-place center within an end of the coil center; (i) the step of molding being conducted after the step of coiling and comprising putting at least a portion of sealant material through an open end of the coil center and molding the sealant material to seal the center against air flow therethrough. 30. A method according to claim 29 wherein: (a) the step of molding comprises using a resin that increases in volume by at least 40% during cure. 31. An air filter cartridge comprising: (a) a coiled media combination comprising fluted media secured to facing media and defining a media combination inlet flow end and an opposite media combination outlet flow end; the media combination defining: (i) a coil having a center extending between the opposite flow ends;(ii) a media combination lead end positioned inside of the coil center; and,(b) a mold-in-place center resulting from putting a sealant material into an open end of the center of the coil and allowing the sealant to seal at least a portion of the lead end and to close the center against air flow therethrough. 32. An air filter cartridge according to claim 31 wherein: (a) the mold-in-place center is formed from a resin that increases in volume by at least 20% during cure. 33. An air filter cartridge according to claim 32 wherein: (a) a housing seal arrangement is positioned secured to the media packcombination. 34. A method of manufacturing an air filter cartridge comprising steps of: (a) applying a curable resin circumscribing a filter media pack, wherein the filter media pack comprises a combination of a fluted sheet and a facing sheet having an inlet flow face and an outlet flow face, and defining a plurality of flutes extending from the inlet flow face to the outlet flow face, wherein the step of applying a curable resin circumscribing a filter media pack provides the curable resin around a perimeter of the media pack between the inlet flow face and the outlet flow face;(b) curing the curable resin to form a cured-in-place coating circumscribing the filter media pack to provide the cured-in-place coating extending at least 80% of a length between the filter media pack inlet flow face and filter media pack the outlet flow face; and(c) providing the air filter cartridge with a molded housing seal around the media pack, wherein the step of providing the air filter cartridge with a molded housing seal around the filter media pack is separate from the step of applying a curable resin circumscribing the filter media pack. 35. A method according to claim 34 wherein: (a) the steps of applying and curing results in the cured-in-place coating extending at least 90% of the length between the filter media pack inlet flow face and the filter media pack outlet flow face. 36. A method according to claim 34 wherein: (a) the steps of applying and curing results in the cured-in-place coating extending at least 95% of the length between the filter media pack inlet flow face and the filter media pack outlet flow face. 37. A method according to claim 34 wherein: (a) the steps of applying and curing results in the cured-in-place coating extending at least 98% up to 100% of the length between the filter media pack inlet flow face and the filter media pack outlet flow face. 38. A method according to claim 34 wherein: (a) the step of applying a curable resin comprises spraying the curable resin. 39. A method according to claim 34 wherein: (a) the step of providing the air filter cartridge with a molded housing seal comprises molding the housing seal directly to the filter media pack. 40. A method according to claim 34 wherein: (a) the step of applying the curable resin comprises molding the curable resin in place. 41. A method according to claim 34 wherein: (a) the step of providing the air filter cartridge with a molded housing seal comprises molding the housing seal over the cured-in-place coating. 42. A method according to claim 34 wherein: (a) the step of providing the air filter cartridge with a molded housing seal comprises attaching a separately molded housing seal. 43. A method according to claim 34 wherein: (a) the combination of the fluted sheet and the facing sheet comprises a lead end and a tail end, and the tail end is sealed by the cured-in-place coating. 44. A method according to claim 34 wherein: (a) the inlet flow face and the outlet flow face have generally flat surfaces. 45. A method according to claim 44 wherein: (a) the inlet flow face and the outlet flow face are parallel. 46. A method according to claim 34 wherein: (a) the housing seal includes opposite axially directed surfaces separated by a peripheral surface. 47. A method according to claim 46 wherein: (a) the opposite axially directed surfaces of the housing seal are flat surfaces. 48. A method according to claim 47 wherein: (a) the opposite axially directed surfaces of the housing seal are parallel. 49. A method according to claim 34 wherein: (a) the filter media pack comprises the fluted sheet and the facing sheet in a coiled arrangement. 50. A method according to claim 49 further comprising: (a) molding a molded-in-place center within the coiled arrangement. 51. A method according to claim 49 wherein: (a) the coiled arrangement has a circular perimeter shape. 52. A method according to claim 49 wherein: (a) the coiled arrangement has a perimeter shape with opposite curved ends and opposite sides. 53. A method according to claim 52 wherein: (a) the opposite sides are straight and parallel. 54. A method of manufacturing an air filter cartridge comprising steps of: (a) spraying a curable resin around a periphery of a filter media pack and forming a cured-in-place coating around the filter media pack, wherein the filter media pack comprises a combination of a fluted sheet and a facing sheet having an inlet flow face and an outlet flow face, and defining a plurality of flutes extending from the inlet flow face to the outlet flow face, wherein the step of spraying a curable resin around a periphery of a filter media pack provides spraying the curable resin around a perimeter of the media pack between the inlet flow face and the outlet flow face; and(b) providing the air filter cartridge with a molded housing seal around the filter media pack. 55. A method according to claim 54 wherein: (a) the steps of spraying and curing comprises forming the cured-in-place coating extending at least 80% of the length between the filter media pack inlet flow face and the filter media pack outlet flow face. 56. A method according to claim 54 wherein: (a) the steps of spraying and curing comprises forming the cured-in-place coating extending at least 90% of the length between the filter media pack inlet flow face and the filter media pack outlet flow face. 57. A method according to claim 54 wherein: (a) the steps of spraying and curing comprises forming the cured-in-place coating extending at least 95% of the length between the filter media pack inlet flow face and the filter media pack outlet flow face. 58. A method according to claim 54 wherein: (a) the cured-in-place coating extending at least 98% up to 100% of the length between the filter media pack inlet flow face and the filter media pack outlet flow face. 59. A method according to claim 54 wherein: (a) the step of providing the air filter cartridge with a molded housing seal comprises molding the housing seal directly to the filter media pack. 60. A method according to claim 54 wherein: (a) the step of providing the air filter cartridge with a molded housing seal comprises molding the housing seal over the cured-in-place coating. 61. A method according to claim 54 wherein: (a) the step of providing the air filter cartridge with a molded housing seal comprises attaching a separating molded housing seal. 62. A method according to claim 54 wherein: (a) the inlet flow face and the outlet flow face have generally flat surfaces. 63. A method according to claim 62 wherein: (a) the inlet flow face and the outlet flow face are parallel. 64. A method according to claim 54 wherein: (a) the combination of the fluted sheet and the facing sheet comprises a lead end and a tail end, and the tail end is sealed by the cured-in-place coating. 65. A method according to claim 54 wherein: (a) the filter media pack comprises the fluted sheet and the facing sheet in a coiled arrangement. 66. A method according to claim 65 further comprising: (a) molding a molded-in-place center within the coiled arrangement. 67. A method according to claim 65 wherein: (a) the coiled arrangement has a circular perimeter shape. 68. A method according to claim 65 wherein: a) the coiled arrangement has a perimeter shape with opposite curved ends and opposite sides. 69. A method according to claim 68 wherein: (a) the opposite straight sides are straight and parallel. 70. A method according to claim 54 wherein: (a) the housing seal includes opposite axially directed surfaces separated by a peripheral surface. 71. A method according to claim 70 wherein: (a) the opposite axially directed surfaces of the housing seal are flat and parallel surfaces. 72. An air filter cartridge comprising: (a) a filter media pack comprising a fluted sheet and a facing sheet having an inlet flow face and an outlet flow face; and defining a plurality of flutes extending from the inlet flow face to the outlet flow face;(b) a cured-in-place resin jacket provided around a periphery of the filter media pack between the filter media pack inlet flow face and the filter media pack outlet flow face and extending at least 80% of a length between the filter media pack inlet flow face and the filter media pack outlet flow face; and(c) a housing seal. 73. An air filter cartridge according to claim 72 wherein: (a) the resin jacket extends at least 90% of the length between the filter media pack inlet flow face and the filter media pack outlet flow face. 74. An air filter cartridge according to claim 72 wherein: (a) the resin jacket extends at least 95% of the length between the filter media pack inlet flow face and the filter media pack outlet flow face. 75. An air filter cartridge according to claim 72 wherein: (a) the resin jacket extends at least 98% up to 100% of the length between the filter media pack inlet flow face and the filter media pack outlet flow face. 76. An air filter cartridge according to claim 72 wherein: (a) the cured-in-place resin jacket comprises a spray coated cured-in-place resin jacket. 77. An air filter cartridge according to claim 72 wherein: (a) the cured-in-place resin jacket comprises a molded cured-in-place resin jacket. 78. An air filter cartridge according to claim 72 wherein: (a) the housing seal is molded-in-place around the filter media pack. 79. An air filter cartridge according to claim 72 wherein: (a) the housing seal is molded-in-place around the cured-in-place resin jacket. 80. An air filter cartridge according to claim 72 wherein: (a) the housing seal is molded-in-place adjacent to one of the filter media pack inlet flow face or the filter media pack outlet flow face. 81. An air filter cartridge according to claim 72 wherein: (a) the housing seal is molded-in-place spaced from the filter media pack inlet flow face and the filter media pack outlet flow face. 82. An air filter cartridge according to claim 72 wherein: (a) the combination of the fluted sheet and the facing sheet comprises a lead end and a tail end, and the tail end is sealed by the cured resin jacket. 83. An air filter cartridge according to claim 72 wherein: (a) the inlet flow face and the outlet flow face have generally flat surfaces. 84. An air filter cartridge according to claim 81 wherein: (a) the inlet flow face and the outlet flow face are parallel. 85. An air filter cartridge according to claim 72 wherein: (a) the filter media pack comprises the fluted sheet and the facing sheet in a coiled arrangement. 86. An air filter cartridge according to claim 85 further comprising: (a) a mold-in-place center within the coiled arrangement. 87. An air filter cartridge according to claim 85 wherein: (a) the coiled arrangement has a circular perimeter shape. 88. An air filter cartridge according to claim 85 wherein: (a) the coiled arrangement has a perimeter shape with opposite curved ends and opposite sides. 89. An air filter cartridge according to claim 88 wherein: (a) the filter media pack opposite sides are straight and parallel. 90. An air filter cartridge according to claim 72 wherein: (a) the housing seal includes opposite axially directed surfaces separated by a peripheral surface. 91. An air filter cartridge according to claim 90 wherein: (a) the opposite axially directed surfaces of the housing seal are flat and parallel surfaces.
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