BRPI1101636A2 - filter with localized flow fitting and filter head - Google Patents

Abstract

FILTER WITH LOCATED FLOW CONNECTION AND FILTER HEAD. The present invention relates to a fluid filter device, where a flow connection element provides a unique interface between the filter element and a filter head. The fluid filter described herein, in general, provides a flow structure that is localized and sealed. The flow connection element is configured to communicate fluid in and out of the fluid filter and is configured to locate fluid flow in and out of the fluid filter within a separation structure of the flow connection element. The flow connection element further includes a sealing structure configured to substantially prevent or at least confine leakage to an area located away from the vicinity of the housing edges. A composite filter head is described, which has integrally molded inlet and outlet connections.

Description

Report of the Invention Patent for "LOCATED FLOW CONNECTION FILTER AND FILTER HEAD".

This application is a continuation in part of pending serial application No. 11/777861 filed July 13, 2007 and is incorporated herein by reference in its entirety.

Field

The present invention relates to a fluid filter having a flow fitting that locates fluid flow into and out of the fluid filter within a flow fitting separation structure. A composite filter head that connects to the flow fitting is also described.

Background

Fluid filters are widely known and used in a variety of systems that require filtration of a working fluid. After wear and tear, many fluid filters must eventually have their filter elements repaired and / or replaced, and many flow filters themselves must be removed in order to be repaired and / or replaced. Thus, ease and cleanliness of service has been a concern in the design of a fluid filter. Leak prevention or at least leak containment has presented challenges in the sealing structure of these flow filters. In an example shown in Figure 25, a typical spin-on filter 900 includes a metal lock plate nut 914, which is typically employed to allow unfiltered fluid to flow into port 922. Unfiltered fluid it is filtered through a filter medium 910 and the filtered fluid flows out of the opening 920. These filters generally require a large seal 916 around the outer edge of the housing 912 and between the housing 912 and lock plate nut 914. An additional seal 918 is still required around the anchor bolt and between the bracket and the lock plate nut.

Although the previous drawings have been useful, improvements and modifications can still be made in the design of a fluid filter, for example in the filter head and connection interface. summary

The following technical description describes an improved fluid filter and filter head. The fluid filter described herein includes a housing having a filter means disposed therein. A flow connecting element is configured to communicate fluid to be filtered to the filter medium and is configured to communicate filtered fluid by the filter medium out of the fluid filter. The flow connection member includes a structure that is configured to locate fluid flow in and out of the fluid filter and includes a sealing structure to substantially prevent or at least confine the leakage.

A filter head that connects to the flow fitting has inlet and outlet connections integrally formed, constructed or otherwise applied to the overall design such as, for example, being integrally molded into a composite filter head design. general. The filter head has an internal configuration that maintains structural integrity while reducing the weight of the filter head and an external configuration that improves fluid flow and cleaning, for example by minimizing leakage.

Some benefits of this fluid filter may include allowing for cleaner service since flow into and out of the fluid filter is located within the flow connection element. As a result, a filter may be provided with a filter, which is more environmentally friendly and is more enjoyable for customers and users. The fluid filter described herein may also substantially prevent or at least confine the leakage to a localized area and away from the edges of the housing, since a sealing structure is provided in the flow connection element. In this way additional external and internal seals can be eliminated where a fluid filter can be provided which is relatively economical, safe and has fewer parts. In addition, the flow fitting can eliminate the need for a lock plate nut as employed in many fluid filters, such as spin-on fluid filters. The flow connection can provide a single head and filter interface that can lead to improved OEM business.

In addition, the flow connection element may provide a benefit of filling a fluid filter in the unfiltered containment region, such as the "dirty side". For example, traditional fuel filters are filled prior to installation in the clean compartment (or "clean side") region. In these flow configurations, the filled fluid is already on the clean side and is allowed to enter the fuel system at first. This filling could be detrimental to common rail fuel systems that require fine particle filtration. The flow fitting element described herein may utilize a flow redirection concept through the flow fitting element which effectively deflects filled fluid through the filtration medium before it can enter the fuel system. That is, the flow connection element described herein allows a pre-filtering function of the filled fluid before fluid is allowed to enter the fluid filter.

In one embodiment, a fluid filter includes a housing and a filter means disposed within the housing. A lock plate nut is disposed at one end of the filter medium. The filter medium is configured to allow fluid to be filtered through the filter medium from side to side. A flow connection element is disposed at an end opposite the end where the locking plate nut is disposed. The flow connection element is configured to communicate filter fluid to be filtered to the filter medium and is configured to communicate filtered fluid by the filter medium out of the fluid filter. The flow fitting is configured to locate fluid flowing in and out of the fluid filter within a flow fitting separating structure. The flow connection element includes a sealing structure disposed on an outer surface of the separation structure.

In one embodiment, the housing is generally open at one end and closed at an opposite end. The open end is configured to receive the filter medium and is fitted with the flow connection element in a hermetic fluid seal. The flow fitting element is fitted with the filter medium into a hermetic fluid seal to maintain separate fluid flow.

In one embodiment, the flow connection element separation structure is generally disposed close to a central region of the fluid filter and generally away from an outer edge of the housing. In yet another embodiment, the flow connecting member is a rod housing the separation structure, the rod extending away from the filter means and out of the open end of the housing. In one embodiment, the stem is generally disposed in a central region of the open end where fluid flow in and out of the fluid filter is concentrated near the center.

In yet another embodiment, the flow connection element is a separate adapter structure which may also be connected to an existing fluid filter head. As an example, the stream connection element can be configured as an adapter for use with traditional spin-on filters. This flow connection element will connect and seal the separate flow openings of the existing filter lock plate nut. More specifically, the flow connecting element will direct unfiltered fluid and filtered fluid through its separation structure. In this configuration, the filter stream can be * p.3 / 1.30 rerouted through the stream connector, while allowing usual stream within a standard style filter (eg spin-on filter). ).

In one embodiment, the sealing structure in the separation structure includes at least one axially disposed sealing member on the outer surface of the separation structure. In one example, the sealing element is an O-ring. In yet another embodiment, the sealing structure includes a plurality of sealing elements, where the sealing elements may be O-rings. In some examples, the structure may include, but are not limited to, one of two resilient O-rings, a combination of a resilient O-ring and face seal having a gasket member or two face seals each having a Gasket element.

In yet another embodiment, the fluid filter is completely disposable.

Brief Description of the Drawings

Figure 1 shows a side view of one embodiment of a fluid filter.

Figure 2 shows an extreme perspective view of the fluid filter of figure 1.

Figure 3 shows a side sectional view of the fluid filter taken from line 3-3 of figure 1.

Figure 4 shows a side sectional view of the fluid filter taken from line 4-4 of figure 1.

Figure 5 shows a side view of another embodiment of a fluid filter.

Figure 6 shows an extreme perspective view of the fluid filter of figure 5.

Figure 7 shows a side sectional view of the fluid filter taken from line 7-7 of figure 5.

Figure 8 shows a side sectional view of the fluid filter taken from line 8-8 of figure 5.

Figure 9 shows another sectional view of the fluid filter of figure 5 showing one embodiment of a flow configuration therethrough.

Figure 10 shows a partial sectional view of the fluid filter of figure 5.

Figure 11 shows a sectional view of yet another embodiment of a fluid filter.

Fig. 12 shows another sectional view of the fluid filter of Fig. 11 and showing an embodiment of a flow configuration therethrough. Figure 13 shows a sectional view of another embodiment of the fluid filter.

Figure 14 shows a sectional view of yet another embodiment of the fluid filter.

Figure 15 shows a sectional view of another embodiment of the fluid filter.

Figure 16 shows a sectional view of another embodiment of the fluid filter.

Figure 17 shows a side view of yet another embodiment of a fluid filter.

Figure 18 shows a side view of the fluid filter of Figure 17 and showing one embodiment of a connection head connected to the fluid filter.

Figure 19 shows a sectional view of the fluid filter and connection head of figure 18.

Figure 20 shows a perspective view of the fluid filter of figure 17.

Figure 21 shows a side view of yet another embodiment of a fluid filter.

Figure 22 shows a perspective view of the fluid filter of figure 21.

Figure 23 shows a perspective view of the fluid filter of Figure 21 and showing one embodiment of a connection head with the fluid filter.

Figure 24 shows another side sectional view of the fluid filter of Figure 21 and showing another embodiment of a fluid filter connection head.

Figure 25 shows a sectional view of a known fluid filter.

Figure 26 shows a perspective view of one embodiment of a flow connection element.

Fig. 27 shows a side view of the flow connection element of Fig. 26.

Figure 28 shows a side sectional view of the flow connection element of figure 26.

Fig. 29 shows a perspective view of the flow connection element of Fig. 26.

Figure 30 shows a side sectional view of the flow connection element of figure 26.

Fig. 31 is a perspective view of one embodiment of a filter head.

Figure 32 is a rear side view of the filter head of Figure 31.

Fig. 33 is a rear perspective side view of the filter head of Fig. 31.

Fig. 34 is a cross-sectional view of the filter head of Fig. 31.

Fig. 35 is a partial side sectional view of the filter head of Fig. 31.

Figure 36A is a top partial sectional view of the filter head of Figure 31.

Figure 36B is a detailed sectional view shown in Figure 36A.

Figure 37 is a sectional view of the filter head of Figure 31 connected to a filter.

Detailed Description

The fluid filter described herein generally provides a fluid structure that is localized and sealed. For example, the fluid filter described herein includes a flow connection element configured to communicate fluid to be filtered by a filter means in the fluid filter and configured to communicate fluid to be filtered by a filter means in the fluid filter and configured to communicate filtered fluid through the filter medium out of the fluid filter. The flow fitting element is configured to locate fluid flow inside and outside the fluid filter within a flow fitting element flow structure. The flow connection element further includes a sealing structure disposed on an outer surface of the flow connection element structure. The fluid filter described herein may allow cleaner service of the fluid filter and for allowing a pre-filtering function since flow into and out of the fluid filter is located within particular flow strokes created. by the flow connection element. The described fluid filter may also substantially prevent or at least confine leakage in an area located near the edges of the housing, while the sealing structure seals the flow located within the housing connection element. flow.

It will be appreciated that "fluid to be filtered" means any working fluid that requires filtration in a process or system such as, but not limited to, fuel, oil, refrigerant or the like. Also, a fluid filter as described herein may be useful in a variety of filter systems such as, but not limited to, oil and lubricant filtration and fuel filtration. As a few examples only, the fluid filter described is particularly useful in fuel and lubricant filtration systems.

Figures 1 to 4 show one embodiment of a fluid filter 10. Fluid filter 10 includes a housing 12. The housing 12 is generally a cylindrical container or wrapper. The housing 12 includes an end with a plurality of support elements 16. The support elements 16 protrude out of the housing 12 and are radially disposed approximately at and around the end. In one embodiment, the support members 16 generally look like rib-like portions. Housing 12 also includes an external connection feature 14 disposed near an opposite end at which support members 16 are disposed. As some examples, the external plug-in feature 14 may be constructed with a threaded, bayonet or similar configuration. It will be appreciated that the support elements 16 and the external connection feature 14 are not limited to the specific structure shown and may be modified using various structures as may be appropriate and / or necessary.

A flow connection element 20 is disposed at an end that is opposite to the support elements 16. The flow connection element 20 connects to the distal housing 12 with respect to the external connection feature 14. In one embodiment, the flow connection element 20 resembles a cap, cover, or cover-like structure having a rod 21 extending outwardly and distally from the end of the housing 12. The rod 21 includes an inlet 24 so that the fluid to be filtered can enter the housing 12 and so that the fluid can access a flow path to the filter medium 30. See arrows in figure 3. The rod 21 also included an outlet 26 so that the fluid that has been filtered through filter means 30 may exit from housing 12. See arrows in figure 4. As shown, inlet 24 and outlet 26 are confined within the stem 21 of the flow connection element 20, where the structure separator or flow separator 25 mant m flow through the inlet 24 and outlet 26 separated from each other.

The grooves 22 are arranged around an outer surface of the rod 21. As shown, the grooves 22 are arranged circumferentially around the rod 21. In one embodiment, the grooves 22 are configured as part of a housing structure. which can support sealing elements (not shown here, but shown in embodiments of FIGS. 11-16). The sealing elements may be various structures, such as, but not limited to, resilient O-ring seals. It will be appreciated that the sealing structure may be realized in a variety of ways as one skilled in the art may construct. and may include examples such as, but not limited to the described O-ring seals, various packing configurations, and an interference type fitting. As shown, the grooves 22 provide a sealing structure such as a double O-ring seal. It will be appreciated that an O-ring seal or more than two O-ring seals may be employed as desired and / or required. It will further be appreciated that O-ring seals may not be used or may be used in combination with other sealing structures such as, but not limited to, gasket seals or interference fit seals.

As with other fluid filters described herein, stem 21 is configured to provide a unique interface between the filter element and a filter head. This single interface will have a radially hermetic fluid seal 21, where flow into and out of the fluid filter 10 is located by flow paths of the flow connection element 20 and which are accessed through inlet 24 and outlet 26 and confined within the rod 21. As shown, the rod 21 is disposed relatively close to, or substantially in a central region, and generally at the open end of the housing 12. The rod 21 is shown arranged far away from the edges of the edges. of the perimeter walls of housing 12. As an example, rod 21 is substantially disposed about a longitudinally centered geometric axis of global fluid filter 10.

The housing 12 and the flow connection element 20 are connected to a hermetic fluid seal on their outer walls. In one embodiment, the housing 12 and the flow connection element 20 are connected via a pull-weld configuration. As shown, housing 12 includes jaws 18 and flow connecting element 20 includes jaws 28. In one example, jaws 18, 28 are used to connect housing 12 and flow connecting element 20 via a Pulling welding process. The jaws 19 are arranged around an outer surface of the housing 12, while the jaws 28 are arranged on an outer surface of the flow connection element 20 and radially outwardly of the rod 21. In one embodiment, the jaws 18, 28, they usually look like sawtooth claws. It will be appreciated that the grips are not limited to the specific structure shown and may be modified as appropriate and / or necessary. It will be further appreciated that the housing 12 and the flow connection element 20 may not be connected via brazed welding, but by some other approach provided that fluid tightness is obtained between the housing 12 and the flow element. flow connection 20.

Returning to the filter means 30, the filter means 30 is disposed within the housing 12. The filter means 30 is connected to an end plate 32 disposed near the end where the supporting elements 16 are arranged. Filter media 30 is configured to connect with flow connection member 20 in a fluid tight seal through another end plate 34. Filter media 30 is connected with another end plate 34. As shown, filter means 30 is disposed between end plates 32, 34. End plate 34 is disposed at an opposite end of end plate 32, where end plate 34 may sealably engage with the end connector. flow 20 into a fluid tight seal.

In one embodiment, the flow connection element 20 and end plate 34 are connected by a snap fit. As an example, the flow separator 25 includes an outer annular surface that seals snugly with an annular surface and the end plate shoulder 34. In this configuration, the filter means 30 is connected to the flow connecting element 20 through of a sealing fitting between the end plate 34 and the flow separator 25. In one embodiment, the filter means 30, the end plates 32, 34 and a central tube 36 (described in more detail below) together provide a cartridge assembly that is connected with the flow connection element 20 in a hermetic fluid seal. It will be appreciated that the fit between the end plate 34 and the flow fitting 20 is not limited to the specific structure shown or a snap fit technique. Various configurations may be employed for securing the filter medium 30 to the flow connection member 20 as desired and / or required, provided that fluid tight sealing is performed.

The filter means 30 may be constructed in a number of configurations, such as, but not limited to, a twisted, insert-wrapped, disc-disc or flowable wrapper through configurations, combinations thereof or the like. As shown in FIGS. 3, the filter medium 30 has a folded configuration having folds 31. It will be appreciated that the material used to construct the filter medium 30 is not limited as long as the filter medium 30 provides the effect of filtering desired for your particular application.

In figures 3 and 4, fluid flowing through the fluid filter 10 enters inlet 24 (see figure 3) 3 exits outlet 26 (see figure 4). As described, stem 21 contains inlet 24 and outlet 26, where flow separator 25 maintains separate flow in and out of fluid filter 10 (best shown in the embodiment of figures 9 and 10 for flow separator 125).

Fluid enters inlet housing 12 of inlet 24 and moves to an outer side of filter means 30 and into a space between filter means 30 and the inner wall of housing 12. Fluid can then be filtered through the medium. 30 to its inner side. A center tube 36 is disposed within the filter means 30. In one example, the center tube 36 cooperates with the filter medium 30 in a concentric configuration, where a plurality of openings 37 allow fluid filtered through the medium. filter 30 enters center tube 36 and exits through outlet 26. See arrows in housing 12, filter means 30 and center tube 36. As with filter means 30, center tube 36 is disposed between end plates 32, 34 and may provide structural support for the filter medium 30.

The filter configuration of Figures 1 to 4 provides a generally radial fluid flow in principle where fluid entering inlet 24 is directed radially outwardly to a position between filter means 30 and housing 12. As described, the flow connection element 20, its stem 21 and the sealing structure provide a separate inlet and outlet fluid flow, which is located away from the edges of the housing. In this configuration, an external seal, often employed on spin-on filters between a lock plate nut and housing can be eliminated. Also, a lock plate nut in these drawings can also be eliminated. See, for example, Figure 25.

Figures 5 to 10 illustrate another embodiment of a fluid filter 100. Fluid filter 100 is similar to fluid filter 10 except that fluid filter 100 includes an external connection feature 114 disposed on a cylindrical surface. flow connector 120 rather than in housing 112.

Housing 112 is generally a cylindrical container or wrapper and includes an end with a plurality of support members 116. Support elements 116 protrude out of housing 112 and are radially disposed near end and around it. In one embodiment, the support members 116 generally resemble rib-like portions.

Housing 112 also includes an external connection feature 114 disposed near an opposite end to that in which support members 116 are disposed. As some examples, the external connection feature 114 may be constructed as a threaded, bayonet or similar configuration. As in figures 1-4, it will be appreciated that the support members 116 and the external connection feature 114 are not limited to the specific structure shown and can be modified using various structures as appropriate and / or required.

A flow connection element 120 is disposed at an end that is opposite to the support elements 116. The flow connection element 120 is connected to the housing 112 distal to the external connection feature 114. In one embodiment , the flow connector 120 resembles a cap structure, covered or similar to the cover, having a stem 121 extending outwardly and distally from the open end of the housing 112. The stem 121 includes an inlet 124, so that fluid to be filtered can enter housing 112 and so that fluid can access a flow path to filter means 130. See arrows in figure 7. Rod 121 also includes an outlet 126, so that fluid which has been filtered by filter means 130 may exit housing 112. See arrows in figure 8. As shown, inlet 124 and outlet 126 are confined within stem 121 of flow connecting member 120, where a flow separator 125 maintains flow through through input 124 and output 126 separate from each other. Grooves 122 are disposed around an outer surface of rod 121. As shown, grooves 122 are circumferentially arranged around rod 121. In one embodiment, grooves 122 are configured as part of a sustainably sealing structure. - have sealing elements (not shown here, but shown in embodiments of figures 11 to 16). The sealing elements may be various structures, such as resilient O-ring seals, but not limited to them. It will be appreciated that the sealing structure can be realized in a variety of ways as one skilled in the art can construct. Some examples may include but are not limited to O-ring seals, various packing configurations, and interference fit structures. As shown, the slots 122 provide a sealing structure which is a double O-ring seal. It will be appreciated that an O-ring seal or more than two O-ring seals may be employed as desired and desired. / or required. It will further be appreciated that O-ring seals may not be used or may be used in combination with other sealing structures such as gasket seals or interference fit but not limited to them.

As with the other fluid filters described herein, stem 121 is configured to provide a unique interface between the filter element and a filter head. This single interface will have a radically hermetic fluid seal on the stem 121, where flow into and out of the fluid filter 100 is located by the flow paths of the flow connection element 120, which are accessed through the inlet. 124 and outlet 126 and confined within rod 121. As shown, rod 121 is disposed relatively close, or substantially in a central region, and generally at the open end of housing 112. Rod 121 is shown disposed distantly perimeter wall edges of housing 112. As an example, rod 12 is substantially centrally disposed about a longitudinally centered geometric axis of the fluid filter 100. Housing 112 and flow connecting member 120 are connected to a fluid tight seal on its outer walls. In one embodiment, the housing 112 and the flow connection element 120 are connected via a pull-weld configuration. As shown, housing 112 includes jaws 118 and flow connector 120 includes jaws 128. In one example, jaws 118, 128 are used to connect housing 112 and flow connecting member 120 through of a pull-weld process. The jaws 118 are disposed around an outer surface of the housing 112, while the jaws 128 are disposed on an outer surface of the flow connection member 120 and radially off the shank 121. In one embodiment, the jaws 118, 128 generally look like sawtooth claws. It will be appreciated that the jaws are not limited to the specific structure shown and may be modified as appropriate and / or necessary. It will be appreciated that housing 112 and flow connecting member 120 may not be connected via pull-weld, but by some other approach provided that fluid tightness is obtained between housing 112 and flow connecting member 120 .

Returning to the filter means 130, the filter means 130 is disposed within the housing 112. The filter means 130 is connected to an end plate 132 disposed near the end where the support elements 116 are disposed. Filter means 130 is configured to connect with flow connection element 120 in a hermetic seal to flow through another end plate 134. Filter media 130 is connected to another end plate 134. As shown, the filter means 130 is disposed between the end plates 132, 134. The end plate 134 is disposed at an opposite end of the end plate 132, where the end plate 134 may sealably seal with the end member. flow fitting 120 in a hermetic fluid seal.

In one embodiment, the flow connection member 120 and end plate 134 are connected by a snap fit. As an example, the flow separator 125 includes an outer annular surface that seals snugly with an annular surface and the end plate shoulder 134. In this configuration, filter means 130 is connected to the connecting element. 120 through a sealing fitting between the end plate 134 and the flow separator 125. In one embodiment, the filter means 130, the end plates 132, 134 and a central tube 136 (described in more detail). details below) together provide a cartridge assembly which is connected with the flow connection element 120 in a hermetic fluid seal. It will be appreciated that the fit between end plate 134 and flow connecting member 120 is not limited to the specific structure shown or a snap fit technique and that other configurations may be employed to attach filter means 130 to the element. flow fitting 120 as desired and / or required as long as fluid tight sealing is performed. As a few examples, fluid tight sealing between the filter means and flow connecting member 120 may be accomplished by a two-point molded seal, a two-component seal fastened seal, or an insert-shaped seal.

The filter medium 130 may be constructed in various configurations such as, but not limited to, a bent, insert-molded spiral wrap, stack disk or flow through configurations, combinations thereof or the like. . As shown in Figures 7 and 8, filter means 130 has a folded configuration having folds 131. It will be appreciated that the material used to construct filter means 130 is not limited as long as filter means 130 provides the effect of filtration desired for your particular application.

In figures 7 and 8, fluid flowing through the fluid filter 100 enters inlet 124 (see figure 7) 3 exits outlet 126 (see figure 8). As described, stem 121 contains inlet 124 and outlet 126, where flow separator 125 maintains separate flow in and out of fluid filter 100 (best shown in figures 9 and 10).

Fluid enters the inlet housing 112 of inlet 124 and moves to an outer side of filter means 130 and into a space between filter means 130 and the inner wall of housing 112. Fluid can then be filtered through the medium. 130 to its inner side. A center tube 136 is disposed within filter means 130. In one example, center tube 136 cooperates with filter means 130 in a concentric configuration, wherein a plurality of openings 137 allow fluid filtered by filter means 130 enter center tube 136 and exit through outlet 126. See arrows in housing 112, filter means 130 and center tube 136. As with filter means 130, center tube 136 is disposed between end plates 132, 134 and may provide structural support for filter means 130.

The filter configuration of Figures 5 to 10 provides a generally radial fluid flow at first where the fluid is directed radially outward to a position between the filter means 130 and the housing 112. As described, the element 120, its shank 121 and sealing structure provide a separate inlet and outlet fluid flow which is located away from the edges of the housing. In this configuration, an external seal, often employed on spin-on filters between a lock plate nut and housing can be eliminated. In addition, a lock plate nut in these drawings may also be disposed of if desired and / or required. See figure 25.

Figure 9 shows the entire fluid flow path through the fluid filter 100 closer. Figure 10 shows the structure of the flow connection element 120, including the flow separator 125. The flow separator 125 includes an opening 124a where the inlet 124 allows fluid to access the interior of housing 112 and move to filter means 130. Flow separator 125 also includes an opening 126a where fluid that has been filtered may access the outlet. 126 and exiting filter means 130 and center tube 136. It will be appreciated that fluid filter 10 may include the same flow configuration and apertures as shown in figures 9 and 10.

As shown in Fig. 10, a groove 119 may be arranged on an outer surface of housing 119 and next to external connection feature 114. In one embodiment, groove 119 may be provided as a position for a sealing member. to be disposed of if desired. It will be appreciated that slot 119 may not be required for housing 112 given the stem flow structure 121 and its outer sealing structure. As an example, however, the groove 119 may be a square cut groove that may support an O-ring seal or other gasket element, if desired.

Figures 11 to 12 illustrate another embodiment of a fluid filter 200. The fluid filter includes a flow fitting 220, generally configured with adjacent flow passages within a rod 221, where a flow passage it takes fluid to be filtered into a filter medium 230 through an inlet 224 and the other flow passage allows fluid to exit the fluid filter 200 through an outlet 226.

Similar to the other fluid filters described, fluid filter 200 includes a housing 212. Housing 212 is generally a cylindrical container or wrapper. The total outer surface of housing 212 is not shown, so that the interior of fluid filter 200 can be conveniently shown. It will be appreciated that the remaining outer surface of the accommodation is consistent with the outer surface that is shown. Housing 212 includes one end with a plurality of support members 216. Support elements 216 protrude out of housing 212 and are radially disposed near and around the end. In one embodiment, the support members 216 generally appear to be rib-like portions. The housing 212 also includes an external connection feature 214 disposed near an end opposite that to which the support elements 16 216 are disposed. As some examples, the external connection feature 214 may be constructed with a threaded, bayonet or similar configuration. As in Figures 1 to 4, it will be appreciated that the support elements 216 and the external connection feature 214 are not limited to the specific structure shown and may be modified using structures as may be appropriate and / or necessary. A flow connecting element 220 is connected to the housing and is disposed near the end that is opposite to the supporting elements 216. In one embodiment, the flow connecting element 220 includes a flow separator 225 having a rod. 221 connected to a board element. In one example, rod 221 extends through the plate member. Rod 221 extends outwardly and distally from one end of filter means 230. In one example, rod 221 extends beyond the open end of housing 212.

Rod 221 includes inlet 224 so that fluid to be filtered can enter housing 212 and so that fluid can access a flow path to filter means 230. See arrows in figure 12. Rod 221 also includes outlet 226, so that fluid that has been filtered through filter means 230 can exit housing 212 after displacement through a flow path of filter means 130. As shown, inlet 224 and outlet 226 are confined within the stem 221 of the flow connection element 220, where the flow separator 225 maintains flow through inlet 224 and outlet 226 separate from each other.

The grooves 222 are arranged around an outer surface of the rod 221. As shown, the grooves 222 are arranged circumferentially around the rod 221. In one embodiment, the grooves 222 are configured as part of a sealing structure. , which can support the sealing elements 222a. The sealing elements 222a may be various structures, such as but not limited to O-ring seals. It will be appreciated that the sealing structure can be realized in a variety of ways as one skilled in the art can construct. Some examples may include, but are not limited to, described O-ring seals, various packing configurations, and interference fit type structures. As shown, the grooves 222 provide a sealing structure such as a double O-ring seal. It will be appreciated that an O-ring seal or more than two O-ring seals may be employed as desired and / or required. It will further be appreciated that O-ring seals may not be used or may be used in combination with other sealing structures such as, but not limited to, gasket seals or interference fit seals.

As with other fluid filters described herein, stem 221 is configured to provide a unique interface between the filter element and a filter head. This unique interface will have a hermetically sealed fluid seal on stem 221, where flow into and out of fluid filter 200 is located by flow paths of flow connector 220 and which are accessed through the inlet. 224 and outlet 226, and confined within rod 221. As shown, rod 221 is disposed relatively near, or substantially in a central region, and generally at the open end of housing 212. Rod 221 is shown disposed. away from the edges of the perimeter walls of housing 212. As an example, rod 221 is substantially centrally disposed about a longitudinally centered geometrical axis of fluid filter 200.

Flow connecting element 220 is connected to an inner side of a wall of housing 212 in a fluid tight seal through the plate structure connected to flow separator 225. In one embodiment, housing 212 and housing element flow connection 220 are connected via a push-in or snap-on solder configuration. It will be appreciated that the connection between the flow connection element 220 and the housing 212 may be modified as appropriate and / or necessary provided that the fluid tight seal is obtained between the housing 212 and the flow connection element. 220

A well area 215 is created when the flow connection element 220 is connected to the housing 212. In one example, the well area 215 is configured where the flow connection element plate plate 220 is disposed inwardly. open end of housing 212. This configuration may further confine the leak.

Turning now to filter means 230, filter means 230 is disposed within housing 212. Filter means 230 is connected to an end plate 232 disposed near the end where support elements 216 are disposed. Filter means 230 is configured to connect with flow connection element 220 in a hermetic fluid seal. Filter means 230 is connected with another end plate 234. As shown, filter means 230 is arranged between end plates 232, 234. End plate 234 is disposed at an opposite end of the end plate. end 232, where the end plate 234 may sealably seal with the flow fitting 220 in a fluid tight seal.

In one embodiment, the flow connection element 220 and end plate 234 are connected by a snap fit. As an example, the flow separator 225 includes an outer annular surface that sealably fits with an annular surface and an end plate shoulder 234. In this configuration, the filter means 230 is connected with the filter element. flow fitting 220 through a sealing fitting between end plate 234 and flow separator 225. In one embodiment, filter means 230, end plates 232, 234 and a center tube 236 (described below) in more detail) together provide a cartridge assembly which is connected with the flow connection element 220 in a hermetic fluid seal. It will be appreciated that the fit between the end plate 234 and the flow connection element 220 is not limited to the specific structure shown or a snap fit technique. Other configurations may be employed to attach the filter means 230 to the flow connection element 220 as desired and / or required, provided that the fluid tight sealing is performed.

Filter means 230 may be constructed in a number of configurations such as, but not limited to, spiral wrap, folding, insert molding, disc stack or flow through configurations, combinations thereof or the like. As shown in Figures 11 and 12, filter means 230 has a folded configuration having folds 31. It will be appreciated that the material used for construction of filter means 230 is not limited as long as filter means 230 provides the effect of filtration desired for your particular application.

In Figure 12, fluid flowing through the fluid filter 200 enters inlet 224 and exits outlet 226. As described, stem 221 contains inlet 224 and outlet 226, where a flow separator 225 holds separate flow into and out of fluid filter 200.

Fluid enters housing 212 from inlet 224 and travels to an outside of filter means 230 and to a space between filter means 230 and the inner wall of housing 212. Fluid can then be filtered through filter medium 230 to its inner side. A center tube 236 is disposed within filter means 230. In one example, center tube 236 cooperates with filter means 230 in a concentric configuration, where a plurality of openings 237 allow fluid filtered by filter medium 230 enter center tube 236 and exit through outlet 226. See arrows in housing 212, filter means 230 and center tube 236. As with filter means 230, center tube 236 is disposed between end plates 232, 234 and may provide greater structural support for filter means 130. As shown in one example, end plate 234 includes center tube 236 as an integral portion of end plate 234.

The flow configuration shown in Figure 12 generally provides a double tube flow where fluid is first directed through outlet 224 and flow passage to the filter medium and is then directed through outlet 226 and flow passageway of center tube 236 and filter means 230. As described, flow connection member 220, stem 221, and sealing structure provide separate inlet and outlet flow, which are located away from the edges of the accommodation. In this configuration, an external seal often employed in spin-on filters between the lock plate nut and housing can be eliminated. Also, the lock plate nut in these drawings can also be eliminated. See figure 25.

In Figure 12, the entire flow path is shown, where flow separator 225 includes an opening 224a, where inlet 224 allows fluid to access the interior of housing 212 and circulate to filter means 230. Flow 225 also includes an opening 226a, where fluid that has been filtered may access outlet 226 and exit filter means 230 and central tube 236.

As further shown in Fig. 12, a slot 219 may be disposed on an outer surface of housing 219 and close to the external connection feature. In one embodiment, slot 219 may be provided as a position for an external sealing member to be disposed. It will be appreciated that slot 219 may not be required for housing 212, given the rod structure 221 and the sealing structure. As an example, however, slot 219 may be a square cut groove, which may support an O-ring seal or other gasket element.

Figure 13 shows another embodiment of a fluid filter 300. Fluid filter 300 includes some similar features, such as fluid filter 200, which are no longer described. Fluid filter 300 includes a flow connection member 320 generally configured with adjacent flow passages within a stem 321. The flow configuration through stem 321 generally looks like a channeled, split pipe. of total length.

In Figure 13, fluid flowing through the fluid filter 300 enters inlet 324 and exits outlet 326. Stem 321 contains inlet 324 and outlet 226, where a flow separator 325 maintains separate flow in. and outside the fluid filter 300. The fluid filter 300 also includes a sealing structure similarly arranged as a fluid filter 200.

Fluid enters the housing from stem inlet 324 and travels through an inlet side stem tube 336. Fluid flows into a space between an end plate 332, connected to filter means 330 and an inner wall of the housing. The fluid may then be filtered through filter means 330 to its inner side and to center tube 336. As shown, center tube 336 is a part of rod 321 and is disposed within filter means 330. Tube Center 336 cooperates with filter means 330, where a plurality of openings 337 allow fluid filtered by filter means 330 to enter central tube 336 on the outlet side and exit through outlet 326. See arrows in housing, in middle 330 and center tube 336. As shown in one example, flow connector 320 includes end plate 334 and center tube 336 as an integral portion of flow connector 320.

The flow configuration shown in Figure 13 generally provides a full length, split, duct pipe. As described, the flow connecting member 320 and its shank 321 and sealing structure provide a separate inlet and outlet flow which are located away from the edges of the housing.

Figure 14 shows yet another embodiment of a fluid filter 400. Fluid filter 400 includes some similar features, such as fluid filter 200, which are not yet described. Fluid filter 400 includes a flow connection member 420 generally configured with adjacent flow passages within a stem 421. The flow configuration through stem 421 generally looks like a concentrically channeled full length tube.

In Figure 14, the fluid flowing through the fluid filter 400 enters through inlet 424 and exits through outlet 426. Stem 421 contains inlet 424 and outlet 426, where a flow separator 425 maintains separate flow. inside and outside of fluid filter 400. Fluid filter 400 also includes a relatively similar sealing structure as in fluid filter 200. As shown, the sealing structure may be a double O-ring seal, wherein one of the seals is arranged in a tube having inlet 424 and the other seal is arranged in a tube having outlet 426.

Fluid enters the housing from the inlet 424 of the rod and travels through a central tube 436 of the rod 421 through the inlet tube. Fluid flows into a space between an end plate 432 connected to filter means 430 and an inner wall of the housing. The fluid may then be filtered through filter means 430 to its inner side and back to center tube 436. As shown, center tube 436 is a part of rod 421 and is disposed within filter medium 430. Center tube 436 cooperates with filter means 430, where a plurality of openings 437 allow filter media filtered 430 to enter center tube 436 at the outlet side and exit through outlet 426. See arrows in housing, filter medium 430 and center tube 436. As shown in one example, flow connection member 420 includes end plate 434 and center tube 436 as an integral portion of flow connection element 420. Still flow connecting member 420 includes end plate 432 and tube having inlet 424 as an integral structure. In this configuration, the flow fitting 420 may be a part of a filter cartridge structure.

The flow configuration shown in Figure 14 generally provides a concentrically channeled full length tube. As described, the flow connecting member 420 with its stem 421 and sealing structure provides a separate inlet and outlet flow, which are located away from the edges of the housing.

Figure 15 shows yet another embodiment of a fluid filter 500. Fluid filter 500 includes some similar features, such as fluid filter 200, which are no longer described. Fluid filter 500 includes a flow fitting 520 generally configured with adjacent flow passages through a rod 521. The flow configuration through rod 521 generally looks like concentrically piped pipes, having a double end plate.

In Fig. 15, fluid flowing through the fluid filter 500 enters inlet 524 and exits outlet 526. Stem 521 contains inlet 524 and outlet 526, where a flow separator 525 maintains the separate flow in. and outside the fluid filter 500. The fluid filter 500 also includes a sealing structure relatively similar to the fluid filter 200.

As shown, the sealing structure may be a double O-ring seal, where one of the seals is disposed in a tube having inlet 524 and the other seal is arranged in a tube having outlet 526.

Fluid enters the housing from the inlet 524 of the rod and through the inlet pipe. Fluid is then directed by flow separator 525 between an outer plate member and the end plate 534 (or double end plate structure). The outer plate element is sealably connected with the housing. The fluid flows into a space between a filter means 530 and an inner wall of the housing. The fluid can then be filtered through filter means 530 to its inner side and to center tube 536. As shown, center tube 536 is a part of rod 521 and is disposed within filter means 530. Tube 536 cooperates with filter means 530, where a plurality of openings 537 allow fluid filtered by filter medium 530 to enter central tube 536 and flow through outlet tube 526. See arrows on rod 521 in housing, filter medium 530 and center tube 536. As shown in one example, flow connector 520 includes the outer plate member, end plate 534, and center tube 536 as an integral portion of the flow connector. flow 520.

The flow configuration shown in Figure 15 generally provides a concentricly channeled pipe with a double end plate. As described, the flow connecting element 520 with its shank 521 and sealing structure provides a separate inlet and one outlet flow that are located away from the edges of the housing.

Figure 16 shows yet another embodiment of a fluid filter 600. Fluid filter 600 includes some similar features, such as fluid filter 200, which are no longer described. Fluid filter 600 includes a flow fitting 620 generally configured with adjacent flow passages through a rod 621. The flow configuration through rod 621 generally looks like a double end plate with split flow.

In Figure 16, fluid flowing through the fluid filter 600 enters inlet 624 and exits outlet 626. Stem 621 contains inlet 624 and outlet 626, where a flow separator 625 keeps the flow separated within. and outside of fluid filter 600. Fluid filter 600 also includes a sealing structure relatively similar to fluid filter 200, where the sealing structure may be a double O-ring seal.

Fluid enters the inlet housing 624 of stem 621. Fluid is then directed by flow separator 625 through a flow passage and openings 624a. A double end plate structure 634a, 634b allows fluid flow through a first filter means 630. Upper or outer end plate 634a is sealedly connected to the housing. Fluid can then circulate to a space between the first filter means 630 and an inner wall of the housing. Fluid can circulate or descend toward end plate 632, where it can then be filtered through a second filter medium 631. Once a fluid has filtered to an inner side of the second filter medium 631, then it circulates through openings 637 of center tube 636. Aperture 626a allows fluid to flow through the outlet flow passage and through outlet 626. See droplets shown and arrows on rod 621, housing, first and second filter means 630, 631 and center tube 636. As shown in one example, the flow connection member 620 includes the double end plate 634a, 634b as an integral portion of the flow connection element 620.

The flow configuration shown in Figure 16 generally provides a split flow dual end plate through the fluid filter and through separate sections of filter medium. As described, the flow connecting member 620 with its shank 621 and sealing structure provides a separate inlet and outlet flow which are located away from the edges of the housing.

The split flow and dual end plate configuration can allow filtering in two ways, which can incorporate different types of filter media. For example, one of the first and second filter means may be configured for fuel filtration, while the other of the first and second filter means may be configured to filter water.

Figures 17-20 show another embodiment of a fluid filter 700. Fluid filter 700 is similar to fluid filter 100 in that fluid filter 700 includes an external connection feature 714 disposed on a cylindrical surface. flow connection element 720. Similar components and parts are briefly mentioned, as follows.

Housing 712 is generally a cylindrical container or wrapper and includes an end with a plurality of support members 716. Support elements 716 protrude out of housing 712 and are arranged radially close to and around from the end. In one embodiment, the support members 716 generally resemble rib-like portions. The external connection feature 714 is disposed near an end opposite that at which the support elements 716 are disposed. As some examples, the external connection feature 714 can be constructed as a threaded, bayonet or similar configuration. It will be appreciated that the support elements 716 and the external connection feature 714 are not limited to the specific structure shown and may be modified using various structures as may be appropriate and / or necessary.

The flow connecting member 720 is disposed at an end that is opposite the support elements 716 and generally at an open end of the housing 712. The flow connecting member 720 is connected to the housing 712. In one embodiment, flow connector 720 appears to be a cap structure, covered or similar to the cover, having a rod 721 extending outwardly and distally to the open end of housing 712.

Stem 721 includes an inlet 724, so that fluid to be filtered can enter the housing 712 and can access a flow path to the filter medium 730. See arrows in figure 19. Stem 721 also includes an outlet 726. , so that fluid that has been filtered through filter means 730 may exit from housing 712. As shown, inlet 724 and outlet 726 are confined within stem 721 of flow connecting member 720, where a flow separator 725 maintains streams through inlet 724 and outlet 726 separate from each other.

Figures 18 and 19 also show one embodiment of a fluid head 750 for connecting fluid filter 700 to a fluid system. Internal connection feature 751 is disposed on an inner surface of filter head 750 and is for engagement with external connection feature 714 of fluid filter 700. As some examples, internal connection feature 751 can be constructed as a threaded, bayonet or similar configuration. It will be appreciated that the internal connection feature is not limited as long as it can engage with external connection feature 714 of fluid filter 700 to connect fluid filter 700 with filter head 750.

Filter head 750 includes an opening 752 for accessing inlet 724 of fluid filter 700. Filter head 750 also includes an opening 754 for accessing outlet 726. Annular surfaces 756, 758 are disposed on internal surfaces of the filter head. filter. Annular surfaces 756, 758 engage with a sealing structure, which is described hereinafter.

A groove 722 is disposed around an outer surface of the rod 721. As shown, the groove 722 is circumferentially arranged around the rod 721 near the end and between the inlet 724 and the rod end 712. In one embodiment, slot 722 is configured as part of a sealing structure that can support a sealing structure 722a. As shown, sealing structure 722a is a resilient O-ring seal as an example.

Unlike the double o-ring structure of fluid filter 100, the sealing structure of fluid filter 100, the sealing structure of fluid filter 700 includes an o-ring seal near the end of stem 721. and a flange or face seal 722b disposed between the O-ring seal and the end of the housing 712. The flange element or face seal 722b may be a gasket member, such as a resilient square gasket arranged around the stem. 721 and between inlet 724 and the external connection feature 714. The face seal 722b is disposed in an outer annular shoulder of the stem 721. It will be appreciated that the sealing member 722a and the sealing member 722b may be interchangeable. desired and / or required. For example, the sealing member 722b (or face seal) and annular shoulder may be arranged where the groove 722 and the sealing member 722a (or O-ring) are arranged. Also, the groove 722 and the sealing member 722a may be arranged where the sealing member 722b and the annular shoulder are arranged.

Returning to the annular surfaces 756, 758 of the filter head, these annular surfaces 756, 758 respectively fit into a fluid tight seal to maintain separate flow streams from inlet 724 and outlet 726 when the fluid filter 700 is connected with filter head 750.

It will be appreciated that the sealing structure configuration can be performed in a variety of ways as one skilled in the art can construct. For example, the sealing structure may be constructed of various configurations including, but not limited to, a double O-ring seal as in the fluid filter 100, or an O-ring seal and gasket. face gaskets such as 700 fluid filter or two gaskets (not shown). It will further be appreciated that O-ring seals and gaskets may not be employed at all, such as where interference fit between the stem and filter head can provide sufficient sealing.

As with other described fluid filters, stem 721 is configured to provide a unique interface between the filter element and a filter head. This single interface will have a radially hermetic fluid seal on stem 721, where flow in and out of fluid filter 700 is located by flow streams of flow connector 720, which are accessed through inlet 724 and outlet 726 and As shown, rod 721 is disposed relatively near or substantially in a central region and at the open end of housing 712. Rod 721 is shown disposed away from the perimeter wall edges of the housing. 712. As an example, the stem 721 is substantially centrally disposed about a longitudinally centered geometry of the fluid filter 700.

The housing 712 and the flow connection element 720 are connected to a hermetic fluid seal on their outer walls. In one embodiment, housing 712 and flow connection member 720 are connected via a draw-weld configuration. As shown, housing 712 includes jaws 718 and flow connector 720 includes jaws 728. In one example, jaws 718, 728 are used to connect housing 712 and flow connector 720 through of a pull-weld process. The jaws 718 are arranged around an outer surface of the housing 712, while the jaws 728 are arranged on an outer surface of the flow connection member 720 and radially off the rod 721. In one embodiment, the jaws 718, 728 generally look like sawtooth claws. It will be appreciated that the jaws are not limited to the specific structure shown and may be modified as appropriate and / or necessary. It will be appreciated that the jaws are not limited to the specific structure shown and may be modified as appropriate and / or necessary. It will be further appreciated that the housing 712 and the flow connection member 720 may not be connected via pull-weld, but by some other approach provided that the fluid tight seal is obtained between the housing 712 and the flow connector. stream 720.

Similar to fluid filter 100, filter means 730 is disposed within housing 712. Filter means 730 is connected to an end plate 732 disposed near the end where support elements 716 are disposed. The filter medium 730 is configured to connect with the flow connection element 720 in a hermetic fluid seal. The filter means 730 is connected with another end plate 734. As shown, the filter medium 730 is disposed between the end plates 732, 734. The end plate 734 is disposed at an opposite end of the plate. 732, where the end plate 734 may sealably seal with the flow connection member 720 in a fluid tight seal.

In one embodiment, the flow connection member 720 and end plate 734 are connected by a snap fit. As an example, the flow separator 725 includes an outer annular surface that seals snugly with an annular surface and the end plate shoulder 734. Thereby, the filter means 730 is connected to the flow connecting element. 720 through a sealing fitting between the end plate 734 and the flow separator 725.

In one embodiment, the filter means 730, end plates 732, 734 and a center tube 736 (described in more detail below) together provide a cartridge assembly, which is connected with the connecting element. flow rate 720 in a hermetic fluid seal. It will be appreciated that the fit between the end plate 734 and the flow coupling member 720 is not limited to the specific structure shown or a snap fit technique and that other configurations may be employed to attach the mounting means. filter 730 to flow connection member 720 as desired and / or required, provided that fluid tight sealing is performed.

As with the above filter media, filter media 730 can be constructed in various configurations such as, but not limited to, spiral wrap, folding, insert molding, puck disk or flow through. of configurations, combinations of these or the like. As shown in Figure 19, filter means 730 has a folded configuration having folds 731. It will be appreciated that the material used to construct filter means 730 is not limited as long as filter media 730 provides the effect of desired filtering for your particular application.

In Figure 19, fluid flowing through the fluid filter 700 enters inlet 724 and exits outlet 726. Stem 721 contains inlet 724 and outlet 726, where flow separator 725 maintains separate flow in and out of flow. Although the fluid flow stroke is not fully shown in FIG. 19, it will be appreciated that the fluid filter 700 employs a similar flow stroke construction as shown in FIGS. 9 and 10 of the fluid filter. 100, except that the flow course is reversed. That is, inlet 724 and outlet 726 are switched such that fluid to be filtered enters stem side 721 and fluid that has been filtered out of stem end 721. In this configuration, fluid filter 700 can operate as a standard spin-on fluid filter, where filtered fluid exits at the center and top of the fluid filter. In addition, the fluid filter can be adapted for use in existing fuel and oil filtration systems employing traditional spin-on type fluid filters.

As shown in Figure 19, fluid enters inlet port 712 of inlet 724 and moves to an outside of filter means 730 and into a space between filter means 730 and the inner wall of housing 712. Fluid can, then be filtered through filter medium 730 to its inner side. A center tube 736 is disposed within the filter means 730. In one example, the center tube 736 cooperates with the filter medium 730 in a concentric configuration, where a plurality of openings 737 allow fluid filtered by the filter medium 730. enter center tube 736 and exit through outlet 726. As with filter means 730, center tube 736 is disposed between end plates 732, 734 and may provide structural support for filter medium 730.

The flow configuration of FIGS. 17-20 provides a generally radial fluid flow, in principle where fluid is directed radially outwardly, to a position between filter means 730 and housing 712. As described, the connecting member of stream 720, its stem 721 and sealing structure provide a separate inlet and outlet stream which are located away from the edges of the housing. In this configuration, an external seal often employed in screw filters between a lock plate nut and the housing can be eliminated. Also, a lock plate nut in these drawings can also be eliminated. See figure 25.

Figures 21-24 show another embodiment of a fluid filter 800. Fluid filter 800 is similar to fluid filter 100 except that fluid filter 800 includes an external connection feature 814 disposed on an outer cylindrical surface. flow connecting element 820. Similar components and parts are briefly mentioned, as follows.

Fluid filter 800 includes a housing 812. The housing 812 is generally a cylindrical container or wrapper. Housing 812 includes one end with a plurality of support members 816. Support elements 816 protrude out of housing 812 and are radially disposed near and around the end. In one embodiment, the support members 816 generally appear to be rib-like portions. The external connection feature 814 is disposed near an end opposite that to which the support elements 816 are disposed.

As some examples, the external connection feature 814 can be constructed with a threaded, bayonet or similar configuration. It will be appreciated that the support members 816 and the external connection feature 814 are not limited to the specific structure shown and may be modified using structures as may be appropriate and / or necessary.

The flow connecting element 820 is disposed at an end that is opposite the support elements 816 and is connected to the housing 812. In one embodiment, the flow connecting element 820 looks like a lid, cover or roof-like structure having a rod 821 extending outwardly and distally with respect to the end of housing 812.

The stem 821 includes an inlet 824, so that the fluid to be filtered can enter the housing 812 and so that the fluid can access a flow path to the filter medium 830. See arrows in figure 24. The stem 821 also included an outlet 826, so that fluid that has been filtered through filter means 830 can exit the housing 812. See Figure 23. As shown, inlet 824 and outlet 826 are confined within stem 821 of the flow connection element. 820, wherein a flow separator 825 keeps flow through inlet 824 and outlet 826 separate from each other.

Figure 23 also shows one embodiment of a filter head 850 for connecting fluid filter 800 to a fluid system. Internal connection feature 851 is disposed on an inner surface of filter head 850 and is for engagement with external connection feature 814 of fluid filter 800.

As some examples, the internal connection feature 851 may be constructed with a threaded, bayonet or similar configuration. It will be appreciated that internal connection feature 851 is not limited as it can engage with external connection feature 814 of fluid filter 800 to connect fluid filter 800 to filter head 850.

Filter head 850 includes an opening 852 for accessing inlet 824 of fluid filter 800. Filter head 850 also includes an opening 854 for accessing outlet 826. Inlet line 852a connects to opening 852 and the line of 854a connects to port 854 to facilitate fluid distribution to and from fluid filter 800. In one embodiment shown in Figure 23, inlet line 852a and outlet line 854a are constructed with mating ends corresponding to each other. respectively with openings 852, 854.

The filter head 850 further includes annular surfaces 856,858 disposed on internal surfaces of the filter head. The annular surfaces 856, 858 engage with a sealing structure which is described hereinafter.

A groove is disposed around an outer surface of the rod 821. As shown, the groove is arranged circumferentially around the rod 821 near the end and between the inlet 824 and the end of the rod 812. In one embodiment, the groove It is configured as part of a sealing structure that can support a sealing member 822a. As shown, sealing member 822a is a resilient O-ring seal as an example.

Unlike the dual O-ring structure of the fluid filter 100, the fluid filter sealing structure 800 includes an O-ring seal near the end of stem 821 and a flange or face seal 822b disposed between the seal O-ring and end of housing 812. That is, the sealing structure configuration is similar to that of fluid filter 700 in Figures 17 to 20.

The flange element or face seal 722b may be a gasket element, such as a resilient square gasket arranged around the rod 821 and between the inlet 824 and the external connection feature 814. The face seal 822b is disposed on an outer annular shoulder of stem 821. It will be appreciated that sealing member 822a and sealing member 822b may be interchangeable as desired and / or required. For example, the sealing member 822b (or face seal) and annular shoulder may be arranged where the slot 822 and the sealing member 822a (or O-ring) are arranged. Also, the groove 822 and the sealing member 822a may be arranged where the sealing member 822b and the annular shoulder are arranged.

Turning to the annular surfaces 856, 858 of the filter head, those annular surfaces 856, 858 fit respectively with the sealing elements 822a, 822b. The annular surfaces and sealing elements fit into a hermetic fluid seal, respectively, to maintain separate flow paths from inlet 824 and outlet 826 when fluid filter 800 is connected with the filter head. 850.

It will be appreciated that the sealing structure configuration can be performed in a variety of ways as one skilled in the art can construct. For example, the sealing structure may be constructed of various configurations including, but not limited to, a double O-ring seal, such as in the fluid filter 100 or an O-ring seal and a sealing gasket. face filters such as 700, 800 or two face seal gaskets (not shown). It will further be appreciated that O-rings and gasket seals may not be employed at all, such as where interference fit between the stem and filter head can provide sufficient sealing.

As with the other fluid filters described, stem 821 is configured to provide a unique interface between the filter element and a filter head. This unique interface will have a radically hermetic fluid seal on stem 821, where flow in and out of fluid filter 800 is located by the flow paths of the flow connection element 820, which are accessed through inlet 824 and 826 and confined within rod 821. As shown, rod 821 is disposed relatively near or substantially in a central region and generally at the open end of housing 812. Rod 821 is shown disposed away from near the perimeter wall edges of the housing 812. As an example, the rod 821 is substantially arranged centrally about a longitudinally centered geometrical axis of the fluid filter 800.

Housing 812 and flow connection element 820 are connected to a hermetic fluid seal on their outer walls. In one embodiment, the housing 812 and flow connection element 820 are connected via a pull-weld configuration. As shown, housing 812 includes jaw 818 and flow connecting element 820 includes jaws 828. In one example, jaws 818, 828 are used to connect housing 812 and flow connecting element 820 through of a pull-weld process. The jaws 818 are arranged around an outer surface of the housing 812, while the jaws 828 are arranged on an outer surface of the flow coupling element 820 and radially off the rod 821. In one embodiment, the jaws 818, 828 generally look like sawtooth claws. It will be appreciated that the jaws are not limited to the specific structure shown and may be modified as appropriate and / or necessary. It will further be appreciated that the housing 812 and the flow connection element 820 may not be connected via pull-weld, but by some other approach provided that a fluid tight seal is obtained between the housing 812 and the flow connection element. 820.

As with the other fluid filters described, filter media 830 is disposed within housing 812. Filter media 830 is connected to an end plate 832 disposed near the end where support elements 816 are disposed. Filter medium 830 is configured to connect with flow connection element 820 in a fluid tight seal through another end plate 834. Filter medium 830 is connected with end plate 834. Filter medium 830 is connected with the end plate 834. As shown, the filter medium 830 is disposed between the end plates 832, 834. The end plate 834 is arranged at an opposite end of the end plate 832, where the end plate The end cap 834 may sealably fit with the flow fitting 820 in a fluid tight seal.

In one embodiment, the flow connection element 820 and the end plate 834 are connected via a snap fit. As an example, the flow separator 825 includes an outer annular surface that seals snugly with an annular surface and shoulder of the end plate 834. Thereby, the filter means 830 is connected to the flow connecting element 820 via a sealed fitting between the end plate 834 and the flow separator 825. In one embodiment, the filter medium 830, the end plates 832, 834 and a center tube 836 (described in more detail below) together provide a cartridge assembly that is connected with the flow connection element 820 in a hermetic fluid seal. It will be appreciated that the fit between the end plate 834 and the flow connection element 820 is not limited to the specific structure shown or a snap fit technique and that other configurations may be employed to secure the filter medium 830 to the element. flow fitting 820 as desired and / or required, provided that fluid tight sealing is performed.

As with the foregoing filter media described, filter media 830 may be constructed in a number of configurations such as, but not limited to, a folding, insert-shaped spiral wrap, stack disc or flow through configurations. , combinations of these or similar. As shown in Fig. 23, filter means 830 has a folded configuration having folds 831. It will be appreciated that the material used to construct filter media 830 is not limited as long as filter media 830 provides the effect of desired filtering for your particular application.

In Figures 23 and 24, fluid flowing through the fluid filter 800 enters inlet 824 and exits outlet 826. Stem 821 contains inlet 824 and outlet 826, where flow separator 825 maintains separate flow. inside and outside of fluid filter 800. Although the fluid flow stroke is not shown completely in FIG. 23, it will be appreciated that fluid filter 800 employs a similar flow stroke construction as shown in FIGS. 9 and 10. See also the flow direction of figure 24. That is, the fluid to be filtered enters the top end of the stem 821 and the fluid that has been filtered out through the side of the stem 821.

Fluid enters housing 812 of inlet 824 and moves to an outside of filter means 830 and into a space between filter means 830 and the inner wall of housing 812. Fluid can then be filtered through 830 filter to its inner side. A center tube 836 is disposed within the filter means 830. In one example, the center tube 836 cooperates with the filter medium 830 in a concentric configuration, where a plurality of openings 837 allows filtered fluid through the filter medium. 830 enter center tube 836 and exit through outlet 826. As with filter means 830, center tube 836 is disposed between end plates 832, 834 and may provide additional structural support for filter medium 830.

Figure 24 shows yet another version of a filter head 860. The filter head is adaptable for connection to a fluid filter, such as fluid filter 800. Filter head 860 also includes an internal connection feature 861 similar to internal connection feature 851. Openings 862, 864 respectively communicate with input 824 and output 826.

Unlike openings 852, 854, openings 862, 864 include internally threaded ends. As an example, the internal threads are adapted for attachment to the filtration system lines in a threaded fitting. The filter head also includes annular surfaces 866, 868, which engage with the fluid filter sealing structure (i.e. sealing elements 822a, 822b) and are similar to annular surfaces 856, 858.

The flow configuration of figures 21-24 provide a generally radial fluid flow at first when fluid is directed radially outwardly to a position between filter means 830 and housing 812. As described, the flow element Flow fitting 820, including its stem 821 and sealing structure, provide a separate inlet and outlet flow, which are located away from the edges of the housing. In this configuration, an external seal often employed in spin-on filters between a lock plate nut and a housing can be eliminated. Also, a lock plate nut in these drawings can also be eliminated. Further, the flow configuration provided by the flow connection element 820 enables a prefiltering function over such a standard spin-on type fluid filter. That is, when fluid filter 800 is filled through the center of the stem or inlet 824, fluid is filled on the unfiltered or "dirty" side of fluid filter 800. Therefore, fluid should be filled. before it can exit the 800 fluid filter. This setting is different from traditional spin-on filters where the fluid is filled through the center, which is the outlet or "clean side" and where the Filled fluid is allowed to escape immediately from the fluid filter, instead of being filtered beforehand.

Turning to Figure 25, it will be appreciated that the concepts of fluid filter inventions described herein can be used retroactively with existing fluid filter housings and including features such as the flow connection element and sealing configurations, but not limited to them. For example, by at least eliminating the lock plate nut, many of the flow connecting elements described can be employed in these known spin-on filters. Further, the central tube may also be modified accordingly to accommodate any of the flow connecting elements described and, if necessary, replaced entirely.

In another embodiment, the flow connection element may be configured as a separate adapter structure which may also be connected to an existing fluid filter head. As an example, the flow connection element may be configured as an adapter for use with traditional spin-on filters as shown in Figure 25 and without removing the existing locking plate nut. This flow connection element will connect and seal the separate flow openings of the existing filter lock plate nut. More specifically, the flow connecting element will direct filtered and unfiltered fluid through its separation structure. In this configuration the fluid flow can be rerouted through the flow connection element while allowing usual flow within the standard style filter (eg spin-on filter).

Figures 26-30 illustrate another embodiment of a flow connecting element 1020. The flow connecting element 1020 includes similar flow channel and sealing structure characteristics as the flow connecting elements described above. It will be appreciated that many of the principles of the invention of the flow connection elements described above may suitably be incorporated into the flow connection element 1020.

Flow connecting element 1020 includes a rod 1021 having an inlet 1024 and outlet 1026. Inlet 1024 and outlet 1026 are disposed on rod 1021, where rod 1021 includes a separating structure 1025 to maintain the flow of separate inlet and outlet through the flow connection element 1020. As with other described flow connection elements, the flow connection element 1020 locates inlet and outlet within rod 1021, such as when the Flow connection element is connected to a fluid filter, for example one of the traditional spin-on type. A groove 1022 is disposed near outlet 1026. Groove 1022 may house an O-ring or a gasket seal (not shown) and provides the necessary sealing structure to further locate fluid flow and further enjoy the benefits of the sealing structure that those flow connection elements described above.

Flow connection element 1020 includes external connection features 1014, 1014a. The external connection features 1014 are useful for attaching the flow connection element 1020 respectively to a component 1030 of a filtration system and to a fluid filter (e.g. spin-on filter of figure 25). ). As shown in figures 29 and 30, external connection feature 1014 can connect to component 1030 of a filtration system and external connection feature 1014a is available for connecting to a fluid filter. As an example only, the external connection feature 1014 may connect to the opening 920 of the spin-on filter 920 of Figure 25. In this configuration, the outlet 1026 communicates with the opening 900 to allow fluid to escape from the filter. 900 and inlet 1024 communicates with opening (s) 922 to allow fluid to enter fluid filter 900 for filtration.

External connection features 1014, 1014a can be a threaded, bayonet or similar configuration. It will be appreciated that external connection features 1014, 1014a are not limited to the specific structure shown and may be modified using various structures as may be appropriate and / or necessary.

The described fluid filters can provide many benefits, such as permitting cleaner service, as flow in and out of the fluid filter is located within the flow connection element. As a result, a filter can be provided that is more environmentally friendly and more enjoyable for customers and users. The fluid filter described herein may also substantially prevent or at least confine leakage, if any, to an area located and away from the edges of the housing, once a sealing structure is provided in the flow fitting element. . In this way additional external and internal seals can be eliminated where a fluid filter can be provided which is relatively economical, safe and has fewer parts. In addition, the flow fitting can eliminate the need for a lock plate nut as employed in many fluid filters, as typically used in spin-on fluid filters, which substantially reduces the cost. associated with the filter as well as allows the device to consist of mostly non-metallic components. The housing itself may also be made of metallic or plastic material and have a pack of cartridge-style filter media with snap-in. The filter media pack may be a unit that is attached to the housing via pull-weld, ultrasonic, adhesive, etc. In addition, variations of the filter media design can be considered as two different types of filter media that could be used for separating combustible water. The flow connection can provide a unique head and filter interface that can lead to improved aftermarket OEM business.

More specifically, the filters described may be produced as a fully disposable molded plastic filter without the inclusion of a lock plate nut. Further, the flow connection element may be shaped or formed as a single component (as opposed to multiple parts to create separate flow channels). Inlet and outlet streams are generally channeled through the central portion of the filter housing. The protrusion of the channels can be used to operate a flow stop valve inside the filter head during service. The aforementioned filters may allow the filter to seal radically against head inlet and outlet while maintaining a leak-free environment. As noted, a leak during removal may be confined to the flow fitting and infiltration around the edges of the filter may be substantially eliminated.

In addition, as fluid flow can be located, the need for an external seal can be eliminated thereby creating a unique encapsulated filtration environment. As a result, the traditional outer O-ring seal and square cut gasket can be eliminated in favor of a simplified stem seal configuration. The ability to create a unique method of connection is substantially increased by the confinement of fluid flow within the sealed portion of the filter.

The separate but confined flow design can be integrated into an existing user-friendly filter product architecture to utilize the media and wrap design cartridges as well as being manufactured on the same assembly line.

Further, the flow connection element may provide a benefit of filling a fluid filter in the unfiltered containment region, such as the "dirty side". The flow fitting element described herein utilizes a flow redirection concept through the flow fitting element that effectively deflects filled fluid through the filtration medium before it can enter the fuel system. That is, the flow connecting element described herein may allow a pre-filtering function of the filled fluid before fluid is allowed to enter the fluid filter outlet. This flow redirection can be particularly useful for newer high pressure common rail fuel systems that require fine particle filtration.

Filter Head Desiqn

Figures 31-37 show an improved filter head 1100 having a wrap 1110, mount 1120 and inlet and outlet connections 1102, 1104. In general, wrap 1110, snap 1120 and connections 1102, 1104 are integrally formed, constructed or otherwise assembled together in the overall design of the filter head. As a more preferred embodiment, the filter head 1100 is a composite design such as, for example, a plastics material, where the fittings 1102, 1104 are integrally molded with the wrapper 1110 and 1120 as a single component. As an example only, the filter head material 1100 is nylon 66 with a 30% glass fill. It will be appreciated, however, that the particular material is not intended to be limiting and that other materials which are suitable and appropriate may be employed. Fittings 1102, 1104 connect to fluid lines of a protected system, such as a motor fluid system (eg, lubricant, fuel, etc.) and are configured to allow fluid to enter and exit the wrap and filter. .

Referring to wrap 1110 and mounting 1120, wrap 1110 has an inner and outer wall structure that can cover the fluid flow (inlet / outlet) area of a filter. For example, the inner and outer wall structure is configured to cover fluid filters such as, but not limited to, fluid filters in figures 1-10 and 17-24 or configured to cover a filter using the connecting element. flow rate shown in figures 26-30. That is, the wrapper as shown is constructed to accommodate fluid filters described herein where connections 1102, 1104 are in fluid communication with the filter inlet / outlet construction. The wrap is also configured with an inner wall structure that can be sealed to the fluid filter so as to flow separately at the inlet and outlet connections 1102, 1104. However, it will be appreciated that the wall structure and shape of the wrap 1110 can be modified as appropriate to accommodate fluid filters that have a different external profile than the filters shown here. As best shown in Figures 34 and 35, the wrap may have an internal thread 1118 that fits a thread over a fluid filter (for example, fluid filters shown in figures 1-10 and 17-24 or a filter using the flow connection element shown in figures 36-30).

As further described below, filter head 1100 also has an internal configuration that maintains structural integrity, such as maintaining a required natural frequency (e.g., about 175 Hz or higher), while reducing the weight of the filter. filter head. By natural frequency, components, such as those employed in motor systems, will tend to excite or undergo vibration or other stress during operation. Natural frequency refers to a threshold at which such a component can be excited.

Referring to crimping 1120, Figures 32-33 and Figures 36A and B show an embodiment of various components and structures that can contribute to the structural integrity of the filter head, such as when it is connected to a fluid filter and motor. As shown, the crimping 1120 includes a ribbed support configuration and wall structure that allows the crimping to be a relatively open structure internally. Screw holes 1106 are provided for connecting / disconnecting the filter head 1100 to other equipment, for example to a motor (not shown). As shown, the screw holes 1106 are supported by upper ribbed holders 1122. In one fashion, the upper ribbed holders 1122 are disposed between the screw holes 1106 and connect to them in the upper portion of the crimp 1120.

As an example only, three screw holes 1106 are shown. It will be appreciated, however, that more or less screw holes may be employed where appropriate, desired and / or necessary. In some preferred embodiments, bolt holes 1106 are of the same length and extend substantially within crimping 1120 from end to end.

In the embodiment shown, the upper ribbed supports 1122 also form part of the upper wall structure of the crimp 1120, further described below.

Lower ribbed holders 1124 support the screw holes 1106 in the lower portion of the assembly 1120. In one embodiment, the lower ribbed holders 1124 are disposed between the screw holes 1106 and connect to them via a screw connection. reinforcement 1126 in the lower portion of the crimp 1120. In one example only, the reinforcement joint 1126 is, for example, a circular structural member.

In the example shown, the upper and lower ribbed supports 1122, 1124 are constructed and arranged in a substantially diamond-like or rhomb-like shape. In some embodiments, each rib in the supports 1122, 1124 may have a thickness T ranging from about 4.5 mm. In one embodiment, screw holes 1106 are generally arranged at vertices of the diamond-like configuration, for example, at upper and side vertices, where the reinforcing structure 1126 is arranged at the vertex. lower opposite the upper vertex. In some embodiments, the relative angle A at the upper and lower vertices is about 120 ° and the angle B at the lateral vertices is about 60 °. It will be appreciated that the particular configuration as shown is not limiting since other configurations may be employed as appropriate, desired and / or necessary.

In the embodiment shown, a vertical rib 1128 is disposed between the upper bolt hole 1106 and the reinforcement structure 1126. The vertical rib 1128 provides additional reinforcement and support to the ribbed supports 1122, 1124 and reinforcement structure 1126.

With further reference to the internal configuration of the filter head 1100, horizontal ribs 1130 may be employed, as appropriate, to additionally secure and support the crimping 1120 to the wrap 1110. Horizontal ribs 1130 are best shown in Figures 32-33 and FIG. 36A.

In the embodiment shown, the crimping 1120 has, in some examples, internal and external vertical ribs 1132, 1134. Figures 32 and 33 show the internal and external vertical ribs 1132, 1134 extending downwardly from locations of the side or bottom screw holes 1106. As shown, the inner and outer vertical ribs 1132, 1134 extend over most of the height of the wrap 1110. In some embodiments, the ribs 1132, 1134 taper or have a bevel toward the wrapper 1110 in the downward direction as shown in figure 33. The vertical rib structure 1132, 1134 still helps maintain a high natural frequency (e.g., about 175 Hz or higher). Locating the vertical ribs can help improve the natural frequency while eliminating the need for horizontal ribs. For example, the fundamental vibrational mode is perpendicular to the plane of the structure. A vertical rib (or ribs) located at various geometries with respect to the screw holes may add stabilization with respect to this vibrational mode. Vertical ribs located in position as shown may, for example, help to distribute frame stiffness through the filter head. Horizontal ribs will have a minimal effect in this regard and may lead to the accumulation of debris on the head at these horizontal rib sites. It will be appreciated that geometries other than the vertical ribs shown may also have the effect of maximizing the natural frequency, while minimizing the overall mass of the components. For example, these include radial ribs extending from screw holes and grid patterns created from a combination of horizontal and vertical ribs.

Referring to Figures 32-33 and 36A-B, filter head construction 1100 can assist with reducing drainage marks in sealing areas where filter head 1100 contacts a filter. In the embodiment shown, for example, the crimp 1120 includes a reduced wall thickness in areas where the crimp 1120 is connected to the wrapper 1110. For example, figures 36A and 36B respectively show a partial upper sectional view of the crimp. filter head and a sectional view of the reduced wall thickness detail in figure 36A. As shown, the crimping 1120 has a sidewall 1140 that extends perpendicular to the direction in which the screw holes 1106 extend. The sidewall has an edge 1142 that substantially surrounds the outer surface of the wrapper 1110 as shown in Figures 32 and 33. The edge 1142 includes a reduced wall thickness and is connected to the exterior of the wrapper to form a groove 1136. As shown. The groove 1136 extends around the sidewall substantially surrounding the wrapper 1110. This reduced wall thickness or groove 1136 (e.g., inner wall) helps to reduce the formation of drainage marks on the filter seals (e.g. for example, at seals 722a and 722b of fluid filter 700) which may be imposed on the wall structure of the filter head 1100. In one example only, the reduced wall thickness is less than 4.0 mm and has sometimes about 3.0 mm. In general, the reduced wall thickness is relatively smaller than the rib and wall structure of the remaining portions of wrap 1110 and crimp 1120.

With reference to the external configuration of the filter head 1100, the construction of the 1120 crimping and fittings 1102, 1104 helps to improve cleanliness, for example by minimizing leakage and helps to improve fluid flow, for example by minimizing initial inlet restrictions. output.

Referring to FIGS. 31-33, the external construction of the bezel 1120 provides an inclined surface 1108 which helps maintain the cleanliness of the filter head. For example, the sloped surface 1108 allows material to drip, such as dirt, which may fall on the filter head, thereby helping to reduce fouling on the filter head 1100. In the example shown, the sloped surface 1108 is formatted. so that the outside of the bezel 1120 is formed as an A-frame clamp. The A-frame can be used, for example, when the internal configuration of the 1120 bezel is a diamond shape which can make it more mold making is easy while maintaining the structural integrity improvements and weight reduction described above.

Still with reference to fittings 1102, 1104, the potential for leaks between fittings 1102, 1104, and wrapper 1110 of filter head 1100 can be eliminated since the fittings are constructed as part of the overall design of filter head 1100 (e.g. fully molded as a part). In some embodiments, fittings 1102, 1104 may be formed to be positioned and located such that they can reduce tangential and turbulent flow as well as initial restriction of fluid flow. For example, Figure 36a shows an example of such positioning. As shown, port 1102 has been moved closer to the center axis of filter head 1100 to reduce tangential and turbulent flow. By placing and positioning the fittings 1102, 1104, a swirling effect can be avoided in fluid flow over a configuration where the fittings are tangentially positioned with respect to the wrap. Such swirling or "back-to-back" flow type naturally increases the overall constraint in any design. Moving either or both of the inlet / outlet closer to the center can produce a flow that is more linear to the filter inlet so as to minimize the whirling effect and overall restriction as desired.

In some embodiments, fittings 1102, 1104 may be constructed or formed in a taper 1112, 1114 from a larger diameter at the end connected to the wrap 1110 to a smaller diameter toward the opposite end or coilable end. - connection to a fluid piping (see, for example, Figures 34 and 35). It will be appreciated that the connections on the filter head may be designed to meet industry standards as required, such as, for example, SAE standards including SAE J2044.

37 is a sectional view of the filter head 1100 connected to a filter 1200 similar to that described above. As above, the filter head 1100, in some embodiments, is configured to cover fluid filters such as, but not limited to, the filters shown in figures 1-10 and 17-24 or configured to cover a filter using the flow connection element shown in figures 36-30.

The filter head described here can provide a number of advantages, among others, such as minimizing leakage potential, reduced overall component weight, maintaining a high natural frequency, and improved overall cleanliness. The one-piece design of the filter head, including the fittings, can help achieve these advantages.

The invention may be embodied in other forms without departing from the spirit or its new characteristics. The modalities described in this application are to be considered in all respects as illustrative and not limiting. The scope of the invention is indicated by the appended claims rather than by the foregoing description and all changes that are within the meaning and equivalence range of the claims are intended to be involved herein.

Claims (19)

1. Filter head comprising: a wrap configured to cover and seal a fluid filter; a crimping connected to the wrap, the crimping including an internally ribbed bracket and a wall frame that allows the crimping to be opened internally, the crimping including screw holes configured for filter head mounting in other equipment; an inlet fitting configured to allow fluid to enter the wrapper; and an outlet fitting configured to allow fluid out of the wrapper; wherein the wrap, crimping, inlet and outlet connections are integrally molded from a composite material as a one-piece component. Filter head according to claim 1, wherein the wrapper has an internal thread. A filter head according to claim 1, wherein the wrap has a wall structure configured to seal the fluid filter to the inlet and outlet connections for separate fluid paths. Filter head according to claim 1, further comprising a natural frequency of at least 175 Hz. A filter head according to claim 1, wherein the crimping includes upper ribbed holders and lower ribbed holders disposed between the screw holes. A filter head according to claim 5, wherein the upper ribbed supports and lower ribbed supports have a diamond-like configuration such that one of the screw holes is generally positioned at an upper vertex. and two of the screw holes are generally positioned at two lateral vertices of the configuration. A filter head according to claim 6, wherein the crimping further comprises a reinforcement structure generally positioned at a lower vertex of the configuration, the reinforcement structure being connected to the lower ribbed supports. A filter head according to claim 7, wherein the crimping further comprises a vertical rib connected between the upper and lower vertices of the configuration. A filter head according to claim 1, wherein the crimping comprises an external sloping surface. A filter head according to claim 9, wherein the outer slanted surface is generally an A-frame. A filter head according to claim 1, wherein the crimping further comprises internal and external vertical ribs extending along a majority of the height of the wrap. A filter head according to claim 11, wherein the inner and outer vertical ribs taper towards the wrap. A filter head according to claim 1, wherein the crimping further comprises a sidewall connected to the wrapper, the sidewall including a thinned edge and the edge is connected to an outer surface of the wrapper to form a groove. . A filter head according to claim 13, wherein the groove substantially surrounds an outer surface of the wrap where the edge connects to the wrap. A filter head according to claim 13, wherein the reduced wall thickness is approximately 3.0 mm and less than 4.0 mm. A filter head according to claim 1, wherein the crimping further comprises horizontal ribs connecting the crimping to the wrapper. A filter head according to claim 1, wherein the connections have a tapered construction of larger diameter at one end from the wrap to a smaller diameter at an opposite end. Filter head according to claim 1, wherein the connections are positioned to reduce the initial restriction of fluid entering and leaving the filter head. A filter assembly comprising: 1-a fluid filter comprising: a housing having a filter cartridge disposed therein, the filter cartridge containing a filter means; and a cover configured to communicate fluid to be filtered to the filter medium and configured to communicate fluid filtered by the filter medium out of the fluid filter, the cover comprising a stem structure and flow separation configured to locate inward fluid flow. and outside the fluid filter, the stem and flow separation structure being molded as a single component and a sealing structure disposed around an external surface of the structure, the sealing structure configured to prevent or substantially confine the leakage of the roof; and a filter head including: a fluid filter connection wrapper, the wrap being configured to cover and seal the fluid filter; a crimping connected to the wrap, the crimping including an inner rib support and a wall structure that allows the crimping to be opened internally, the crimping including screw holes configured for mounting the filter head to other equipment; an inlet fitting configured to allow fluid to enter the housing; and an outlet fitting configured to allow fluid out of the wrap, wherein the wrap, crimping, inlet and outlet fittings are integrally molded from a composite material as a single component.