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CA-3071286-C - A SPIN-ON FLUID TREATMENT DEVICE AND METHODS

CA3071286CCA 3071286 CCA3071286 CCA 3071286CCA-3071286-C

Abstract

The disclosure pertains to a spin-on fluid treatment device, including a treatment medium disposed within a housing, a top surface having an internally threaded bore and an outlet tube at least partially disposed inside said threaded bore in a concentric position. The outlet tube can have an externally oriented sealing portion for engaging with a complementary element of an inlet spud of an entity that receives said treated fluids. The outlet tube can be configured as an alignment feature to guide the treatment device onto the inlet spud during installation. The outlet tube can be configured with both an externally oriented sealing portion and an alignment feature. The disclosure also pertains to a system comprising a machine having a treatment device head and a spin-on fluid treatment device, a kit, a spin-on fluid filter cartridge, and a method of mounting a spin-on filter cartridge onto a filter head.

Inventors

  • Gert Willems

Assignees

  • DONALDSON COMPANY, INC.

Dates

Publication Date
20260505
Application Date
20180810
Priority Date
20170811

Claims (20)

  1. 1. A spin-on fluid treatment device (100), comprising a housing (160), a top surface, said top surface having an internally threaded bore (130), at least one inlet orifice (120) radially removed from said threaded bore (130), and an axial seal surrounding said at least one inlet orifice (120); wherein an outlet tube (110) is at least partially disposed inside said threaded bore (130) in a concentric position, wherein a treatment medium (151) is arranged inside said housing (160) to treat fluids entering through said at least one inlet orifice (120) and leaving through said outlet tube (110).
  2. 2. The spin-on fluid treatment device (100) according to claim 1, wherein said outlet tube (110) is provided with an externally oriented sealing portion (115, 116), configured for engaging with a complementary element (215, 216) of an inlet spud of an entity that receives said treated fluids.
  3. 3. The spin-on fluid treatment device (100) according to claim 2, wherein said sealing portion (115, 116) has at least an axial component.
  4. 4. The spin-on fluid treatment device (100) according to claim 2 or claim 3, wherein said sealing portion (115, 116) has at least a radial component,
  5. 5. The spin-on fluid treatment device (100) according to claim 4, wherein said outlet tube (110) is formed as a substantially cylindrical tube, the wall (115) of which is rounded at the open top end, and wherein said radial component includes an outwardly oriented part of said rounded wall.
  6. 6. The spin-on fluid treatment device (100) according to claim 4, wherein said outlet tube (110) is formed as a substantially cylindrical tube, the wall (115) of which is tapered at the open top end so as to form a conical surface, and wherein said radial component includes said conical surface. 33
  7. 7. The spin-on fluid treatment device (100) according to claim 4, wherein said outlet tube (110) is formed as a substantially frustoconical tube, and wherein said radial component includes an outer surface of said substantially frustoconical tube.
  8. 8. The spin-on fluid treatment device (100) according to any of the preceding claims, wherein said treatment medium is arranged in a cartridge inside said housing, said cartridge being pushed towards said top surface by a resilient element.
  9. 9. The spin-on fluid treatment device (100) according to claim 8, wherein said outlet tube has an ending in a shape that has no cylindrical symmetry, configured to be sealing with a corresponding shape on said complementary element.
  10. 10. The spin-on fluid treatment device (100) according to claim 8, wherein said outlet tube is movable in an axial direction relative to said top surface.
  11. 11. The spin-on fluid treatment device (100) according to any of the preceding claims, wherein said externally oriented sealing portion is positioned, at least partially within the volume defined by the lower end of the threaded bore and said top surface.
  12. 12. The spin-on fluid treatment device (100) according to any of the preceding claims, wherein said treatment medium is a filter medium.
  13. 13. The spin-on fluid treatment device (100) according to any of the preceding claims, wherein the outlet tube extends axially beyond the threaded bore to define an alignment feature between the threaded bore and a threaded portion of an inlet spud of an entity that receives said treated fluids.
  14. 14. The spin-on fluid treatment device (100) according to any of the preceding claims, wherein the outlet tube (110): (a) extends axially beyond the threaded bore (130) to define an alignment feature between the threaded bore and a threaded portion of an inlet spud of an entity that receives said treated fluids; 34 (b) includes an externally oriented sealing portion (115, 116), configured for engaging with a complementary element (215, 216) of an inlet spud of an entity that receives said treated fluids.
  15. 15. The spin-on fluid treatment device (100) according to any of the preceding claims, wherein the alignment feature is defined by a chamfered end or a curved end of the outlet tube (110).
  16. 16. A system comprising a machine having a treatment device head (200) and a spin-on fluid treatment device (100) according to any of the preceding claims; wherein said treatment device head (200) comprises at least one head outlet orifice configured to achieve fluid communication with the at least one inlet orifice (120) of the spin-on treatment device (100) and a head inlet orifice (210) configured to achieve fluid communication with the outlet orifice (110) of the spin-on treatment device (100), said head inlet orifice being provided in a snout with a threaded outer surface (230) configured to engage with the threaded bore (130) of the spin-on fluid treatment device (100); and wherein said externally oriented sealing portion (115, 116) is configured for engaging with a complementary element (215, 216) of the head inlet orifice (210).
  17. 17. A kit comprising: ¨ a spin-on fluid treatment device comprising a substantially cylindrical housing with a top surface, said top surface having a centrally arranged internally threaded bore, at least one inlet orifice radially removed from said threaded bore, and an axial seal surrounding said at least one inlet orifice, a treatment medium being arranged inside said housing to treat fluids entering through said at least one inlet orifice and leaving through an outlet orifice; and ¨ a part forming an outlet tube with an externally oriented sealing portion, configured for engaging with a complementary element of the inlet orifice of an entity that receives said treated fluids; wherein said part is adapted to be installable onto said spin-on fluid treatment device such that said outlet tube is at least partially disposed inside said threaded bore in a concentric position and in sealed fluid communication with said outlet orifice.
  18. 18. A method of mounting a spin-on filter cartridge (150) onto a filter head, the method comprising: (a) providing a filter head having an externally threaded spud; the spud having an internally directed sealing surface; (b) providing a filter cartridge having a housing holding a filter element, the housing having a cover piece with a central bore with internally directed threads; the filter element having an outlet tube; (c) connecting the filter cartridge to the filter head by threadably mating the internal threads of the central bore and the external threads of the spud; and (d) directing the outlet tube into the spud.
  19. 19. The method of mounting a spin-on filter cartridge (150) of claim 18, further including the step of forming a seal between and against the outlet tube and an internal surface of the spud.
  20. 20. The method of mounting a spin-on filter cartridge (150) of claim 18 or 19, wherein the step of directing the outlet tube into the spud includes aligning the outlet tube into the spud with an alignment feature defined on the outlet tube.

Description

A SPIN-ON FLUID TREATMENT DEVICE AND METHODS Technical Field The present disclosure pertains to fluid treatment systems, in particular replaceable spin-on filters for filtering liquids such as fuel, oil, other engine fluids, hydraulic fluids, and the like. 10 Background A filter of the spin-on type typically has a central orifice in its top surface, provided with a metal inner thread that is arranged to engage with a hollow threaded metal cylinder on the engine or machine, through which the filtered liquid is returned. If the liquid to be filtered is sufficiently viscous and the threads are produced with 15 sufficiently low tolerances, the engaged threaded metal parts will form a sufficient seal between the clean (untreated) flow path of the fluid inside the filter housing and the dirty (treated) flow path of the fluid inside the filter housing to avoid substantial bypass of fluid from the dirty (untreated) side to the clean (treated) side without passing through the treatment medium. One or more further orifices are provided in 20 the top surface, radially removed from the central orifice, for receiving the dirty fluid. An axial seal creates the seal between the fluid in the filter housing and the outside environment. Spin-on filters in the prior art include: WO 2013/188036 Al; WO 2015/156760 Al; 25 and WO 2013/028320 A2. It is a disadvantage of the known spin-on filters that any impurities, such as plastic or metal particles, that are present at the interface (and in particular on the threaded 1 Date rec;ue/date received 2024-05-18 WO 2019/033008 PCT /0S2018/046286 surfaces) prior to installation of the filter, may end up inside the clean side of the filter after installation and thus reach the machine or engine during operation. Furthermore, impurities can be formed by the metal to metal thread engagement 5 during the installation of the filter and part of these impurities might end up inside the clean side of the filter. Improvements over the prior art are desirable. Summary According to an aspect of the present disclosure, there is provided a spin-on fluid treatment device, comprising a housing, a top surface, said top surface having an internally threaded bore, at least one inlet orifice radially removed from said threaded bore, and an axial seal surrounding said at least one inlet orifice; wherein 15 an outlet tube is at least partially disposed inside said threaded bore in a concentric position, wherein a treatment medium is arranged inside said housing to treat fluids entering through said at least one inlet orifice and leaving through said outlet tube; and wherein said outlet tube is provided with an externally oriented sealing portion configured for engaging with a complementary element of an inlet spud of an entity 20 that receives said treated fluids. The term "radially removed" as used herein implies that the inlet orifice is located wholly outside of the internally threaded bore. The term "externally oriented" is used herein to indicate that the sealing portion operates in an upward and/or radially 25 outward direction. The housing may be substantially cylindrical. The internally threaded bore may be centrally arranged in said top surface. It is an advantage of the present disclosure that the inner thread of the threaded bore of the device according to the disclosure and the outer thread of the connecting snout 30 of the machine remain isolated from the clean side of the device during and after installation, thus avoiding the contamination of the clean side of the device by impurities present on these threaded surfaces. 2 WO 2019/033008 PCT /0S2018/046286 Throughout the present application, where reference is made to avoiding the presence of impurities, this includes avoiding the presence of impurities having a size in excess of a certain threshold, such as for example a threshold of 500 μrn, preferably a threshold of 100 micron. Impurities of this threshold size can be 5 avoided without the use of a separate sealing member as the line-contact engagement between, for example, the plastic outlet tube of the filter cartridge and the metal inlet tube of the machine head will form a sufficient seal. In some applications, where a seal member such as an O-ring is provided on the 10 outlet tube, avoiding the presence of impurities may further include having a size in excess of a certain lower threshold, such preferably a threshold of 5 micron. as for example a threshold of 50 μm, In an embodiment of the spin-on fluid treatment device according to the present 15 disclosure, the sealing portion has at least an axial component. In an embodiment of the spin-on fluid treatment device according to the present disclosure, the sealing portion has at least a radial component. 20 In a particular embodiment, the outlet tube is formed as a substantially cylindrical tube, the wall of which is rounded at the open top end, and the radial component includes an outwardly oriented part of the rounded wall. This embod