CN101711657B - Vacuum appliance filter assemblies and associated vacuum systems - Google Patents
Vacuum appliance filter assemblies and associated vacuum systems Download PDFInfo
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- CN101711657B CN101711657B CN200910179163.XA CN200910179163A CN101711657B CN 101711657 B CN101711657 B CN 101711657B CN 200910179163 A CN200910179163 A CN 200910179163A CN 101711657 B CN101711657 B CN 101711657B
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- filter
- cap
- filtration members
- filter assemblies
- vacuum
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Landscapes
- Filters For Electric Vacuum Cleaners (AREA)
- Filtering Materials (AREA)
Abstract
Disclose vacuum cleaner filter, be especially suitable for the interchangeable vacuum cleaner filter of dry type and wet/dry type vacuum cleaner, also disclose the system and their using method with this filter.Described filter comprises the multiple fold, top end cap and the molded end ring optionally for engaging with the motor shell of vacuum cleaner that are adjacent to arrange, described fold be disposed in closed circumference, on the path of cylindrical shape, described top end cap has can the centre bore of post on compression vacuum filter holder, described molded end ring and described top end cap relatively spaced apart.
Description
The cross reference of related application
This application claims that on October 1st, 2008 submits to, sequence number is the priority of the U. S utility patent application of 12/243,921, itself so that require that on July 4th, 2008 submits to, sequence number is the priority of the U.S. Provisional Patent Application of 61/078,362.All the elements entirety of these two U.S. Patent applications is attached to here by reference.
The research that federal government subsidizes or exploitation
Inapplicable.
With reference to annex
Inapplicable.
Technical field
The present invention relates generally to the filter for vacuum cleaner, and relates more specifically to the interchangeable filter for vacuum cleaner, also relates to the vacuum equipment system comprising and use this filter.
Background technology
Vacuum equipment, especially vacuum cleaner and wet/dry vacuum cleaners, no matter they strictly belong to cleaning dry substance, or they can carry out wetting and do cleaning, all needs certain methods with dust-separating and dirt from the air be expelled back in environment during operation.Typically, vacuum filter is used to prevent fragment from returning by swept region.Therefore, the general filter that uses performs these separation functions.Relevant to the use of this filter normally needs pulls down described filter from described vacuum equipment and is connected on described vacuum equipment by described filter, such as, when cleaning described filter or replacing filter that is old or that damage with new filter.Further, about the vacuum cleaner being referred to as " wet/dry " vacuum cleaner models, also described filter is usually pulled down when vacuum cleaner is at pumping liquid.Therefore, in order to be suitable for pulling down and replace described filter, specific structure is usually with the specific/dry vacuum cleaners that wets.
About the operation of vacuum equipment or relevant air mobile system, typically, the suction system with motor produces vacuum and is installed in and covers, and this lid is detachably connected to the collection drum of the material for receiving suction.A part for described lid, is called installation component here, and to extend downwardly at least in part in described drum and mounting filter supporting component, be commonly referred to as " filter holder ", vacuum inlet covers on the pumping components in described lid by usually.Described retainer can be made up of plastics, such as polypropylene, and can be the part of the molded of cylinder form or extrusion molding substantially, described part has a series of ribs that is axial and circumference, this ribs with the open surface region of large percentage to support the filter that extends around described retainer, and (at least in part) in order to prevent harmful radially inside collapsing of described filter during vacuumizing.Described axial rib typically with through the longitudinal axis alignment of described retainer and described circumferential rib becomes right angle substantially usually with described axial rib.Such retainer structure forms the parts of relative stiffness in the axial direction.Except supporting described filter; described retainer can provide the safety guard preventing user from contacting impeller, and optionally can hold floating part (float) further or described vacuum cleaner can be protected to prevent water by the similar device be by mistake drawn in described impeller.
The dirty air of outside or water to be drawn in the opening in described drum or lid typically via flexible pipe by the described vacuum system inside the lid of vacuum equipment, thus dirt or water are deposited in described drum.Remaining material, mainly air, then radially inwardly flows through described filter to remove described dirt and fragment and to continue to flow through in suction impeller that described retainer enters in described lid, and is then discharged by from described vacuum cleaner.
Described filter is usually by threaded column bolt (stud) or " maintenance hack lever ", with the nut be combined on the end of described retainer and be connected on described installation component, it gives the compression of described filter axial in order to utilize the longitudinal rigidity of described axial rib.In typical case uses, described filter is inserted on described retainer, and the mounting flange of rigid material such as plastics to be connected on described retainer or installation component and to be used to compress described filter or " be clipped in " between described flange and described installation component by described filter.Be applied to the compression on whole filter body and its filter element, mechanical force is used on described filter seal to described vacuum cleaner and prevent the main power of the dangerous leakage by described vacuum cleaner.Like this, in structure reliably and have the retainer of support force for described filter general function and be important for described vacuum cleaner usually.Also can directly clamp (clamp) to described installation component or cover by one or more seals of some other methods, such as described filter, and described filter is connected to suitable position.In a kind of structure, the retainer of rigidity is also necessary for prevention harmful object or finger enter described impeller and collecting entrance closedown floating part.
Experience shows, although these vacuum filter systems and mechanism work, they use normally clumsy or troublesome, itself so that make the replacement of described filter itself be difficult, troublesome or consuming time.Further, wherein said filter is connected to installation component via the threaded column bolt-nut system on the end of described filter holder, uses threaded nut described filter to be remained on those vacuum systems of axial compressive force state, it can be consuming time for operating, and independent filter nut or the application of similar bindiny mechanism are not satisfied, because this part can be easy to lose or misplace during the replacement process of filter.Extraly, the design of some more complicated filter systems uses some mechanisms, and these mechanisms add the unnecessary cost of whole vacuum equipment product.Finally, do not use or need those filter systems of filter retainer mechanism design filter usually can be caused to become be easy to being shifted and/or destroying when vacuum equipment fell or shake the sealing of described filter and described vacuum equipment, itself so that seal itself can be damaged and liquid or fragment are adversely leaked in described vacuum system and motor.
Present patent application disclose for vacuum equipment, the filter assemblies that such as wet/dry vacuum cleaners uses together, it does not need any independently maintaining body described filter being installed to described vacuum equipment, allow replace rapidly and effectively and/or clean described filter, be easy to be sealed on the installation component of described vacuum equipment, keep fixing in the normal operation period, can not in described vacuum equipment vibrations and displacement when moving roughly, and it is easy to install in the existing vacuum equipment commercially existed, in order to use filter assemblies of the present invention, do not need consumer must buy new vacuum equipment, such as new/dry vacuum the equipment that wets.
Summary of the invention
Invention as described herein relates to the filter assemblies for vacuum equipment, comprises the system of this filter assemblies, and for this filter and filter assemblies being connected to the method for vacuum equipment.According to a method of the present invention, describe a kind of filter for wet/dry vacuum equipment, wherein said filter comprises the cap portion of the opening with hole or the shaping extended through from it; The end ring of isolated annular; The shaped filtration part extended in the middle of described cap and described end ring and in the closed circumferential paths forming closed inner track at interval; Wherein said hole or opening can by retaining ring around, and wherein said cap and described end ring are made up of flexible material.Described cap can be general planar or nonplanar substantially, and also can comprise one or more for improving the handle pulling down the easy degree of described filter assemblies from the erection column of vacuum filter retainer or bar.According to actual conditions, the hole of annular or the opening of shaping can be the centers of the described cap portion being positioned at described filter assemblies substantially, or can be offset from the central axis of the described cap portion of described filter assemblies.Extraly, described filtration members itself can be cylinder form, oval shape, coniform shape, oval or rectangular shape according to actual conditions, but is not limited thereto, and can be Wrinkled or non-pleated formula.
According to another aspect more of the present invention, describe a kind of filter for wet/dry vacuum equipment, wherein said filter comprises the cap with looping pit or the opening extended through from it, and the hole of described annular or opening can be positioned at center or not be positioned at center; The end ring of annular; With to be arranged in the middle of described cap and described end ring and to form the filtration members that the hoop path of closed inner track extends, wherein said looping pit by holding structure around, and wherein said cap and described end ring are made up of the flexible material being connected to described filtration members, make when described cap wet with described/dry vacuum equipment coordinate time, in the plane below the top surface that described cap is sealed in described filter.In similar related fields of the present invention, describe a kind of filter for wet/dry vacuum equipment, wherein said filter comprises the cap being positioned at the looping pit at center having and extend through from it; The end ring of annular; And to be arranged between described cap and described end ring and to form closed, that circumferential paths the extends filtration members of closed inner track, the wherein said looping pit being positioned at center by retaining ring around, and wherein said cap and described end ring are made up of the flexible material being connected to described filtration members.Further according to this aspect of the present invention, describe a kind of filter for wet/dry vacuum equipment, wherein said filter comprises the cap being positioned at the opening at center having and extend through from it; The end ring of annular; And to be arranged between described cap and described end ring and to form the filtration members that the circumferential paths of closed interior zone extends, wherein said cap and described end ring by being connected to the flexible material of described filtration members, such as elastomeric material makes.Further according to these aspects of the present invention, described in be positioned at center opening can by retaining ring or similar holding device around, wherein said retaining ring forms with described cap, or is not form with described cap.
According to another aspect of the present invention, describe a kind of filter assemblies for wet/dry vacuum equipment, wherein said filter assemblies comprises the cap being positioned at the opening at center having and extend through from it, with the end ring of annular, and to be arranged between described cap and described end ring and to form the filtration members that the circumferential paths of closed interior zone extends, wherein said cap comprises restriction around the described bowl cover being positioned at the interior zone of the opening at center, and wherein said cap and described end ring are made up of the flexible material being connected to described filtration members.
According to further aspect of the present invention, describe and a kind ofly using air movement to pick up the vacuum cleaner systems used in dry and wet fragment, wherein said system comprises the filter holder be connected with the cap assemblies of vacuum cleaner or motor shell, and filter assemblies.Described filter holder assembly comprises bottom surface and is essentially perpendicular to the erection column that extends of ground, described bottom surface of described filter holder.Described filter assemblies comprises the cap being positioned at the looping pit at center having and pass extension from it, annular end ring, closed, that circumferential paths the extends filtration members of closed inner track is being formed at interval in the middle of described cap and described end ring, and the wherein said looping pit being positioned at center by retaining ring around, described retaining ring can form with described top surface or not be integrally connected to described top surface.According to this aspect of the present invention, the area of described looping pit is less than the area of the shaping front end of described erection column, the looping pit of the described filter assemblies when pushing through or be pulled through described post is made to expand with on the described shaping front end being enclosed within described erection column, and then once described front end by, shrink, allow to shrink to lean against by the described retaining ring that forms and described filter hole described post to make described filter assemblies be maintained at appropriate position on the described bottom surface of described filter holder.Extraly, the described erection column of described filter holder can have various shape, comprise hourglass shape, make can limit described hourglass shape by two perimeters and an interior zone, the diameter of described perimeter is greater than the diameter of described interior zone, and wherein this shaping erection column works to increase filter assemblies and leans against sealing on described filter holder.Further according to this aspect of the present invention, as a system, the opening being positioned at center on the top that described filter assemblies is arranged on described filter holder and in the cap of described erection column filter described in extend through at least in part, and be kept in position by the retaining ring formed on described cap, the wherein said undeformed diameter being positioned at the opening at center is less than the diameter of a part for described erection column, make at assembly process, the described opening being positioned at center is diametrically being expanded to be enclosed within a part for described erection column, and thereafter diametrically shrink make described filter remain on described filter holder.
According to another aspect of the present invention, describe a kind of vacuum cleaner systems, wherein said system comprises filter holder and filter assemblies, described filter holder comprises end face, relative to the bottom surface of described end face, and be essentially perpendicular to the erection column that extends of ground, described bottom surface of described filter holder, described filter assemblies comprises the cap with the opening extended through from it, the end ring of annular, and to be arranged between described cap and described end ring and to form the closed of closed inner track, the filtration members that circumferential paths extends, described opening in wherein said cap by elastomeric material around, on the top that wherein said filter assemblies is arranged on described filter holder and a part for described erection column extends through the described opening in the described cap of described filter assemblies, and be maintained at suitable position by described elastomeric material, and the undeformed diameter of the described opening in wherein said cap is less than the diameter of a part for described erection column, make diametrically expanding to be arranged in a described part for described erection column at opening described in assembly process, and diametrically shrinking to be remained on described filter holder by described filter assemblies thereafter.
According to further aspect of the present invention, describe a kind of/dry vacuum cleaners that wets, it comprises filter holder and filter assemblies, and described filter holder comprises the protuberance extended from it, and described filter holder has certain length; Described filter assemblies comprises the cap limiting opening formed by deformable material, and from the filtration members that described cap extends, the length of wherein said filtration members is greater than the length of described filter holder; Wherein described filter is made to be connected on described retainer by arranging described filter around described retainer, the length of described filter is extended along the length of described retainer, and make the protuberance extended from described filter holder extend through the described opening of described filter cap, make to be made described filter be kept to go up in position at least in part by compression stress, this compression stress is by limiting putting on the compression on described protuberance and producing of the variable material of described opening; And the joint of wherein said protuberance and described opening makes described deformable material deformation, described cap is made to present conical shape substantially.Further according to this aspect of the present invention, described filter holder can be connected on the motor shell of vacuum equipment, wherein forms by strained material the direction of summit sensing towards described motor shell that described conical shape is described cone.Still further according to this aspect of the present invention, when on the motor shell that described filter holder is connected to vacuum equipment, form described conical shape by strained material and the summit of described cone is pointed to away from the direction that extends, described motor shell ground.
Of the present invention further in, describe a kind of device, such as vacuum plant or similar device, wherein said device comprises filter holder and filter assemblies, described filter holder comprises first end and the second end, and from the installation protuberance that described second end extends; Described filter assemblies comprises the filter extended around described filter holder, described filter comprises first end and the second end, be arranged in the mounting cap at the described second end place of described filter, described mounting cap is made up of flexible material at least in part and is limited opening; Wherein said installation protuberance extends through the described opening limited by described mounting cap, makes described mounting cap engage the region of described installation protuberance; And the distance wherein engaging the region of described installation protuberance from the described first end of described filter holder to described mounting cap is less than the distance of described second end from the described first end of described filter holder to described filter assemblies.
In another aspect of this invention, describe a kind of method on filter holder filter being connected to wet/dry vacuum equipment, wherein said method comprises the following steps: provide filter holder, the installation protuberance that described filter holder comprises first end and the second end and extends from described second end, described installation protuberance limits installation region; There is provided filter assemblies, described filter assemblies comprises first end, the second end and is arranged in the mounting cap at described second end place of described filter, and described mounting cap is made up of deformable material at least in part and is limited opening; Arrange that described filter assemblies makes described filter assemblies to be enclosed within described filter holder and makes described second end of described filter assemblies be arranged to described second end closer to described filter holder compared with the distance of the described first end to described filter holder around described filter holder; With the described mounting cap of distortion, make described installation protuberance extend through the described opening in described end cap and make described end cap engage the installation region of described installation protuberance.
According to further aspect of the present invention, describe a kind of filter assemblies for wet/dry vacuum equipment, wherein said filter assemblies comprises filtration members and the mounting cap of generic cylindrical, and described filtration members comprises Wrinkled material, and described filtration members limits first end; Described mounting cap is connected to the described first end of described filtration members, the opening that described mounting cap is limited to the generic cylindrical of the immediate vicinity of described mounting cap and the ring extended around described opening, wherein said mounting cap has the described mounting cap distortion of permission with the rubber elastomer characteristics presenting conical shape substantially, and wherein said ring has elastomeric characteristic, allow described annular strain, make it radially inwardly apply compression stress towards the center of described columniform opening.
Of the present invention further in, describe a kind of for comprise installation elements wet/dry vacuum equipment in the filter assemblies that uses, wherein said wet/dry filter assemblies comprise for filter by described wet/filter for installation of particulate matter collected of dry vacuum equipment, and elastomer retainer, described elastomer retainer produce when when being disposed at least partially in the opening that is formed in described elastomer retainer of described installation elements trend towards described filter assemblies to remain on relative to described wet/dry vacuum device on the compression stress at the fixed position place of a bit.
Accompanying drawing explanation
Accompanying drawing below forms the part of this description and is included to some aspect of the present invention is shown further.Combine the detailed description of presented particular implementation here with reference to one or more in these accompanying drawings, the present invention may be better understood.
Fig. 1 shows the perspective view of the representational vacuum equipment system coordinated with vacuum filter of the present invention.
Fig. 2 shows the perspective view of representational vacuum filter of the present invention.
Fig. 3 shows the side view of the vacuum filter of Fig. 2.
Fig. 4 shows the bottom view of the representational vacuum filter of Fig. 2.
Fig. 5 shows the cross-sectional view of the perspective of the filter of the Fig. 2 intercepted along line 5-5.
Fig. 6 shows the perspective view of the representational filter according to an embodiment of the invention, shown filter traditional wet/pump unit of dry vacuum equipment above decomposition orientation on.
Fig. 7 A shows the cross sectional representation with the representational vacuum cleaner installation component according to filter of the present invention be installed on it.
Fig. 7 B shows the cross sectional representation with another vacuum cleaner installation component according to filter of the present invention be installed on it.
Fig. 7 C shows the cross sectional representation with the vacuum cleaner installation component again according to filter of the present invention be installed on it.
Fig. 8 shows the perspective view of another vacuum filter assembly of the present invention.
Fig. 9 shows the perspective view of a vacuum filter assembly more of the present invention.
Figure 10 A shows the side cross-sectional view of the filter of the Fig. 9 obtained along line 9-9.
Figure 10 B shows the top view of the filter of Fig. 9.
Figure 11 shows the perspective view of a filter assemblies more of the present invention.
Figure 12 A shows the side partial sectional view for filter holder assembly of the present invention, shows the improvement (retrofit) of existing retainer assembly.
Figure 12 B shows the side partial sectional view for another filter holder assembly of the present invention, shows the improvement of retainer assembly.
Figure 12 C shows for the bottom surface of another filter holder assembly of the present invention and the fragmentary, perspective view of erection column.
Figure 12 D shows for the bottom surface of another filter holder assembly of the present invention and the fragmentary, perspective view of erection column.
Figure 12 E shows the cross-sectional view of the filter holder assembly of Figure 12 D intercepted along line 12-12.
Figure 13 A-E shows the embodiment of plurality of optional of the present invention.
Figure 14 A shows according to further filter assemblies of the present invention.
Figure 14 B shows the cross-sectional view of the filter assemblies of Figure 14 A intercepted along line 14-14.
Figure 15 shows the perspective view according to representational filter assemblies of the present invention.
Figure 16 shows the perspective view according to representational filter assemblies of the present invention.
Although the present invention disclosed is here easy to various amendment and optional form, only several specific embodiment has been illustrated in the accompanying drawings as an example and has been described in detail below.The accompanying drawing of these particular implementation and detailed description limit the concept of invention or the width of appended claims and scope never in any form.On the contrary, provide described accompanying drawing and detailed written description to illustrate concept of the present invention to those of ordinary skill in the art and to make those of ordinary skill in the art to manufacture and to use concept of the present invention.
Detailed description of the invention
The written description of above-described accompanying drawing and ad hoc structure below and function is not used in and limits the scope of content or the scope of appended claims that applicant invented.On the contrary, described accompanying drawing and written description is provided can to implement and use the present invention of request patent protection with anyone instructing this area.It will be recognized by those of ordinary skills, in order to know and be convenient to understand, do not describe or illustrate whole features of commercial implementation of the present invention.Those of ordinary skill in the art also will recognize that, the exploitation comprising the real commercial implementation of aspects more of the present invention by many for needs decision-makings relevant to specific implementation to obtain the final goal being used for commercial implementation of developer.This decision-making relevant with specific implementation can comprise and to be not limited to equally, meet that system is correlated with, business is correlated with, government is relevant and other constraint, according to specific specific implementation, position and time, it can be change for it.Although the effort of developer may be sensuously definitely complicated with consuming time, but for the those skilled in the art be benefited from the present invention, this effort will be routine mission.It must be understood that, disclosedly be here easy to carry out multiple and different amendments and optional form with the invention of instruction.Finally, the use of single term, such as, but not limited to " one ", is not used in the quantity limiting article.And, the use of the term of expression relation, such as, but be not limited to, " top ", " end ", the "left", "right" that use in the written description, " on ", D score, " downwards ", " upwards ", " side " etc. be in order to reference to knowing during specific accompanying drawing and being not used in the scope limiting the present invention and appended claims.
Generally speaking, applicants have invented for vacuum equipment, the filter assemblies that such as wet/dry vacuum cleaners uses together, it does not need the independent maintaining body be installed to by described filter on described vacuum equipment, allow rapidly and effectively replace or clean described filter, automatically be sealed on the installation component of described vacuum equipment, keep fixing in the normal operation period, can not due to the vibrations of described vacuum equipment and the bad displacement of moving roughly and producing, and it is easy to install in the existing vacuum cleaner unit that commercially existed.
With reference now to accompanying drawing, Fig. 1 shows the schematic perspective view for the representational vacuum equipment system 10 used together with filter system of the present invention, system shown in it is wet/dry vacuum equipment 20, and it comprises collects on drum or room 30, the top 34 that can be arranged on the caster (caster) 42 on the bottom 32 of described drum 30 and be detachably connected to described collection drum 30 and accommodates the lid 50 of unit head.Described lid 50 is detachably connected to (such as, by linkage etc., or lifted out completely by the top of releasable breech lock from drum 30) described collection drum 30, make easily to pull down fragment and liquid that described lid is contained in described drum to turn, or as related to the present invention, to replace or cleaning is typically arranged on the filter assemblies (not shown) of the downside of motor shell, unit head or vacuum equipment lid.For/the dry vacuum cleaners that wets known most, motor (not shown) is connected on the installation component on the inboard portion of the lid 50 of described vacuum cleaner 20 usually, described vacuum cleaner 20 operationally produces vacuum in the inner side of described collection drum 30, makes solid fragment, liquid or solid fragment and liquid to be drawn onto in described collection drum 30 by ingress port via vacuum hose (not shown).Described collection drum 30 also can optionally comprise floss hole 60, make to turn and to remove liquid in described drum (for example, by being such as D551 in the patent No., the pump described in the U.S. Design Pat of 681), and need not open and pull down described lid 50.Vacuum equipment such as described system 10 generally includes filter assemblies described here, and installation component and/or the filter holder (not shown) that will here describe in more detail, and it is typically connected to the downside of described lid 50 or motor shell or forms with the downside of described lid 50 or motor shell, down extend to and collect in drum 30.
Described vacuum equipment itself, comprise described collecting chamber/drum 30 and described lid and unit head 50 to be made up of multiple lightweight, the relatively cheap plastics with suitable intensity and hardness or polymer, include but not limited to polypropylene, polyurethane and other similar material.Other selected part of motor frame and overall vacuum assembly can be made up of harder than the material making described collecting chamber and the material with less bending modulus, representational material includes but not limited to the Merlon of the polyester of glass-filled, glass-filled, thermosetting polyester and similar polymeric material, compared with being used for manufacturing the material of collecting chamber, all these materials are all heavier and normally more expensive.
Fig. 2-5 shows the filter assemblies 100 according to aspects more of the present invention.In fig. 2, show the perspective view of filter assemblies 100, it comprises cap portion 110, end ring 130 (not shown) of the integral type formed, with generic cylindrical shape, Wrinkled (pleated) filtration members 120, described filtration members 120 extends in the middle of cap 110 and end ring 130 and in closed circumferential paths and it comprises and forms the interior zone closed.The cap 110 of described integral type can optionally comprise two handle portions formed 112,114 further, as shown, with the shaped hole 118 at the center at described cap, center shaped hole 118 extends through described cap from the top surface 111 of cap 110 and arrives the closed interior air-flow paths formed by filtration members 120.Described cap 110 also optionally can comprise multiple support bar 115 formed to increase the structural intergrity of described cap portion 110.As shown in the figure, described handle portion 112 and 114 can be diametrically relative substantially in orientation, and on the top that partly can extend to described pleated filter part 120 and edge, making to allow for user provides grip surface to help when replacing filter to pull down filter from the filter holder of vacuum equipment.Although show two handles parts 112 and 114, should be understood that filter assemblies as described herein can not have handle, have a handles, or have more than two handles, it can be directed in many ways, such as perpendicular to the end face of described cap portion, but be not limited thereto.Also as in fig. 2, described hole 118 in cap 110 can by form or annular that not integrally is formed holding device such as retaining ring 116 around, described retaining ring 116 has such size, similar substantially annulus (taurus-like) (ring) shape of shape and internal diameter, namely, ball on the leading end of the installation shaft on vacuum filter retainer or end boss can be forced upwards and by described hole 118, this will discuss in more detail below, to make filter assemblies of the present invention remain on described filter holder and to rest against on the pedestal of described vacuum equipment.If retaining ring 116 is integral types, the part as manufacture process is formed in cap 110 by it.By (for example, bonding) of multiple suitable chemistry or the method for machinery, it can be connected on top surface 111 when ring 116 is non-Unitary and is the resolution element of described filter assemblies, but be not limited thereto.
Fig. 3 shows the side view of filter assemblies 100, particularly illustrates the cap 110 of described integral type, the size relationship between described filtration members 120 and described end ring 130.As shown in there, of the present invention one non-limiting, representational in, the top mounting cap 110 of described integral type has overall diameter d
1, due to the cap 110 of automatic adjustment shape, described overall diameter d
1equal in all directions.The filtration members 120 be integrally connected on cap 110 has overall diameter d
3.According to this non-limiting, representational aspect of the present invention, the overall diameter d of filtration members 120
3the overall diameter d of cap 110 can be greater than
1.As shown, described profiled handle 112,114 is only had outwards to extend in the mode extended on the outward flange of filtration members 120, the diameter d between the described outward flange making described handle
2be greater than the overall diameter d of filtration members 120
3.But composition graphs 3 sees Fig. 2, it should be noted that according to some aspect of the present invention, the major part of cap 110, around the top of filtration members 120, makes the overall diameter d of cap 110 more than 50%
1be less than the overall diameter d of filtration members 120
3.According to representational, non-limiting aspect of the present invention, described cap 110 be greater than 50% diameter d
1with the overall diameter d of filtration members 120
3there is the ratio in the scope of from about 1.0: 1.1 to about 1.0: 2.0, comprise, preferably the scope of from about 1.0: 1.1 to about 1.0: 1.5, or further preferably from about 1.0: 1.2 to about 1.0: 1.4 scope.In addition, and as just non-limiting example, the overall diameter d of filtration members 120
1with height h
1between ratio can in the scope of from about 1.0: 1.3 to about 1.0: 1.8, be preferably in the scope of from about 1.0: 1.4 to about 1.0: 1.6.Finally, as shown in figure 3, described in the overall diameter d of end ring 130 that forms
4be less than the overall diameter d of filtration members 120
3, and equal the overall diameter d of cap 110 substantially
1.In representational, non-limiting, filter assemblies 100 can have the filtration members height of about 8.25 inches, the filtration members overall diameter d of about 6.5 inches
3, and the cap 110 of about 5.38 inches and end ring 130 diameter, wherein cross over the diameter d of handle portion 112,114
2it is about 7.5 inches.As above, but, these size relationships are not determinate, and the overall diameter that the overall diameter of described cap 110 and/or end ring 130 is greater than described filtration members 120 or the overall diameter equaling described filtration members 120 alternatively are substantially acceptable equally.In addition, according to some aspect of the present invention, in order to provide support on the bottom of filtration members, or in order to help to provide the sealing surfaces leaned against on the motor shell of vacuum equipment, the end ring 130 of annular does not need to be included in described filter assemblies.In this case, by comprising inner support disc (web) or seat (mesh), such as metal pedestal (mesh) supporting component (not shown) can realize the support to filter assemblies, and it is around the interior zone of filtration members 120.
In the diagram, the bottom view of the vacuum filter assembly of Fig. 2 of the present invention is shown.As seen in the drawings, the retaining ring 116 that hole 118 extends through the annular on the top surface 111 of cap 110 arrives the bottom surface 113 of cap 110.Fig. 4 also shows the closed inner track of the filter 100 formed by the circumferential paths of filtration members 120.This inner track is a part for described filter assemblies, in typical case uses, it is installed on the filter holder of vacuum equipment, and therefore the front end of described installation shaft upwards extends and passes centre bore 118, and this is described in more detail with reference to Fig. 6 and 7.
Fig. 5 shows the cross-sectional view of perspective that intercept along line 5-5, of the present invention representational filter 100 as shown in Figure 2, and shows filter seal, filter cell and cap 110.As being more clearly visible in this view, the outward flange of described filter cell 120 extends across outward flange or the diameter of the end cap 110 of described integral type and the end ring 130 of described annular, except the some parts of handle 112 and 114 formed with end cap 110, handle 112 and 114 have antelabium 117 think user strengthen grasp and its down and the outward flange crossing described filter cell 120 extends a distance.Multiple support bars 115 formed on the top surface 111 of cap 110 for increasing described end cap 110 intensity and fit together period at typical operation at the filter holder with vacuum equipment and provide extra mechanical support for described filter assemblies, this will be described in more detail below.
Described end cap 110, and the end ring 130 of described integral type can by any traditional rigidity or semirigid material make, described material has enough large flexibility to form sealing by the structure 82 of " ball " on the leading end of the bar 80 of (goover) described filter holder 90 or equal shape, as in figure 6, described material includes but not limited to the polymer such as plastics and such as polyvinyl chloride (PVC), the metals such as such as steel, with be suitable for absorb energy and especially under vacuum conditions formed keep sealing elastomeric material, this material includes but not limited to polyurethane elastomer and similar material.Described term " elastomer " or " elastomeric ", as used, be often referred to the glass transition temperature T having and increase at thermal coefficient of expansion at that time here
gcomposition or material, and comprise amorphous polymer (amorphouspolymer) elastomer and thermoplastic.Be particularly suitable for here using and there is low T
g, such as, at 600 °F (315.5 DEG C) below, be less than about 50lb/ft
3density (or specified weight), and from about 10PSI (about 68,947.572Pa) to the elastomer of the tensile strength be greater than in about 100PSI (about 689,475.728Pa) scope.This includes but not limited to polyolefin elastomer, SPUA, polyurethane elastomer, latex and thermoplastic compound/elastomer.As here used, term " elastomer " or " elastomer compounds " also can comprise silicon resin base or silica based elastomeric, or comprise elastomer or the rubber of silicones.The representational elastomer used in formation filter assemblies as described herein and rubber compound include but not limited to acrylonitrile-butadiene rubber (NBR) such as Buna-N, hydrogenated nitrile-butadiene rubber, and second propylene elastomeric, carbon fluorubber are such as
chlorobutadiene, silicon rubber and elastomer, flurosilicone rubber and elastomer, polyacrylate elastomer, ethylene acrylic elastomers, styrene butadiene ribber (SBR), polyurethane comprise polyester and poly(ether-urethane), and natural rubber (NR).
Especially, according to one aspect of the present invention, end cap 110 and end ring 130, by elastomeric material, are preferably polyurethane foam plastics, and more preferably it is two-component-type polyurethane foam plastics, the two-component-type polyurethane foam plastics such as comprising the mixture of isocyanates and resin is made.According to some aspect of the present invention, the Elastoflex that described two-component-type polyurethane foam plastics can be produced by BASF AG of the Li Funiya of the state of Michigan (Mich.) (Livonia)
tMmaterial is made.The representational non-limiting resin of two-component-type polyurethane foam plastics and the ratio of isocyanates mix ratio between about 1: 1 to about 3: 1, and this ratio comprises end points.One or all suitable, the optional elastomer that can be used to be formed in described cap 110 and described end ring 130 includes but not limited to that (coml example comprises polyurethane
with
), expandable polystyrene (EPS; Coml example comprises
all the expandable polystyrenes (EPS) can bought from BASF), extruded polystyrene (XPS; Coml example comprises from BASF's
c or
), melamine resin is (such as
), or polypropylene is (such as
The elastomeric material being used for manufacturing the end cap 110 of described integral type and the end ring 130 of described integral type is preferably identical type, and has multiple physical property and mechanical performance that the disclosed whole filter assemblies of permission perform in described favourable mode further here.The representational characteristic of described material comprises density, tear resistance, elongation, compressive deformation, Shore (shore) " A " hardness, tensile strength, hardness, static modulus and resists the ability of multiple organic solvent due to the cross-linked structure of elastomeric material, etc.Show the scope of representational non-limiting physical and mechanical property in Table 1, and be used to representational (non-limiting) measurement standard obtaining the listed physics of described elastomeric material and/or the data of mechanical performance.According to the present invention, being used for the elastomeric material of the end cap 110 and described end ring 130 that form described integral type can have two or more physical characteristics as listed in Table 1 or performance, such as tensile strength, elongation and closed micropore amount.
Table 1. is suitable for physics and the mechanical property of the elastomeric material used in the shaping of the some parts of filter assemblies of the present invention.
| Physical/mechanical properties | Measurement standard | Representational range values 1 |
| Density | ASTM D1564，D1622 | 16-25lb/ft 2 |
| Tensile strength 3 | ASTM D1564，D412 | 150-220psi |
| Elongation | ASTM D1564，D412 | 90-200％ |
| Tear resistance, Die " C " (PLI) | ASTM D624-00(2007) | 20-40 |
| Compressive deformation | ASTM D1564/D3576 | 10-70％ |
| Shore " A " hardness (being freely molded (free rise molded)) | ISO 7619 ASTM D1415，D2240 | 30-40pts. |
| Closed micropore amount | ASTM D-2856 | 80-99％ |
| Dielectric strength (dielectric strength) 2 | ASTM D149-97a | 20-100kV/in |
1: all numerical value records in the temperature range needed for listed testing standard.
2: dielectric strength is the measured value of the ability of elastomer opposing current flowing upon application of a voltage.
3: as used here, term " tensile strength " refers to the tensile stress that can be applied to the maximum of described elastomeric material before terminating elastic stage, it is according to ASTM-standard D-638, ASTMD-412, or the unit force (N/m that ISO37 (can obtain from network address astm.org) measures at per unit area
2embedding Pa).
The filtration members being suitable for using in filter assemblies of the present invention, such as filtration members 120 can be Wrinkleds, as shown, or can be non-Wrinkled, and can be made up of multiple suitable filtering material, described filtering material includes but not limited to paper; Cloth; Glass fiber material; Fibrilled film fibre (splitfiber) material; Solution-polymerized SBR (solutionspun) fiber and the material be made up of these fibers; Felt material; Natural fiber filtering material; Expanded ptfe (PTFE) film; Expansion ultra-high molecular weight polyethylene (PE) film and material; Melt-blown (meltblown) medium, such as fusion-jetting polypropylene (PP) or melt-blown polyethylene (PE); Many micropores open cell polymer, such as polyurethane foam; PET, (PET) or polyphenylene thioether (PPS) sill, and their copolymerization sill; The fibrous material (efficiency particulate air (HEPA) filter, described filter is those filters of the particulate of 0.3 millimeter of (um) diameter removing at least 99.97% in air) of HEPA-shaped material and associated fiber or the random arrangement according to NIOSH requirement; The medium of frictional electrification and material, and similar material, any one that can process in them makes to be hydrophobic and/or to have the characteristic of the mouldy and mould of prevention.This process may be desirable especially for manufactured those filter assemblies used in wet/dry vacuum cleaners.Filtration members 120 can be folding or Wrinkled, as in the drawings such as shown in Fig. 2, or according to actual conditions it can right and wrong folding.Preferably, according to one aspect of the present invention, and no matter form filtration members 120 and use which type of material, filtration members material be folded into multiple fold and be formed the generic cylindrical of the outward appearance with corrugated or Wrinkled or the shape of similar pipe, thus increase the surface area exposed.This folding area added with the filtration members of air flow contacts during vacuum equipment operation, therefore improves filtration effectively when not reducing air-flow.Depend on the desired airflow permeability that will realize, described filtration members also can have multiple hole or orifice size distribution.Representational hole includes but not limited to about 1 micron, about 3 microns and about 10 microns, and is greater than or less than the hole of these numerical value, such as about 0.1 micron and about 15 microns.This hole numerical value, as used, means that prevention is had at least 99% of target particle size (such as 10 microns) or larger all particles by filtration members here.Hole is measured can adopt any suitable measuring method or device, such as, adopt CoulterPorometer
tM(CoulterElectronics, the Inc. of Ah (Hialeah) strangle in Florida State Haier) or use industrial standard method of testing, such as ASTMF316-03 (can obtain from American National Standard Institute).This hole causes having from about 2cfm/ft according to filtration members of the present invention
2to about 80cfm/ft
2air flow permeability in scope.As a rule, but, described filtration members 120 is relatively hard and is substantially the flexible shape to keep them simultaneously, and have hole as desired with during the operation of described vacuum cleaner by dry substance, such as dust, dry wall (drywall) dust, dirt, fireplace ash and similar substance filter away from air-flow, and permission air flows through it and arrives and export and pass vacuum cover simultaneously.
As pointed, filtration members of the present invention also optionally can comprise one or more bacteriostatic agents (biostaticagent) and/or bactericide (biocidalagent) further.Typically select suitable bacteriostatic agent or bactericide to have the characteristic of anti-bacteria (bacteriostatic) and/or Antifungi (fungistatic), it can be used to process filtration members of the present invention and reduce through the biological pollution (such as, mycotoxin contamination) of vacuum equipment with the air of this filter of use.2-bromo-2-nitro-1,3-propylene glycol can be included but not limited to, isothiazoline by the representational bacteriostatic agent that uses and/or bactericide in order to this object, methyl or propyl group or butyl p-hydroxybenzoic acid, sorbic acid, the salt of benzoic acid and these acid, phenoxetol, triclosan, a hydroxyl diphenyl ether, dichlorophen, chlorhexidine gluconate, o-phenyl phenol, season bactericide, 2-benzyl-4-chlorophenol, with base substituted diphenylamine ether, and their combination.In order to promote application or the use of this bacteriostatic agent, many extra additives can be applied to described filtration members, or combine with the bactericide or bacteriostatic agent that are applied to described filtration members, include but not limited to wetting agent, rheologic additive and surfactant.Described wetting agent can be selected from calcium chloride, glycerine, D-sorbite, ethylene glycol, polyethylene glycol (PEG), propane diols, 1,3-BDO, saltcake, sodium chloride and sodium dioctyl sulphosuccinate.Described rheologic additive is thickener, gelling agent or viscosity modifier typically, and can be that one or more select the composition in sodium carboxymethylcellulose (CMC), hydroxyethylcellulose (HEC), hydroxypropyl cellulose (HPC), polyethylene glycol, polypropylene glycol, polyvinyl alcohol, polyvinyl acetate (PVA), these polyvinylpyrrolidone and copolymer, hydroxypropyl guar, xanthans, shitosan, ACR, acrylic acid polymer (carbopol) and water-soluble polymer, and their combination.Preferably, described composition can keep six months or the term of validity for more time in use, make described filtration members after normal use 3 months, compared with filtration members not processed under identical condition, on cleaning and filtering material with cfu ' s/ gram (cfu/gram) for unit at least reduces to 10% (log1reduction).
In addition, although the assembly of reference cylinder shape generally illustrates and describes filter assemblies as described herein, can imagine that obtaining these filter assemblies can have other suitable shapes many, include but not limited to oval cylinder, conical, oval, foursquare, rectangular and hexagonal.
Figure 6 illustrates the exploded view of the filter assemblies 100 coordinated with the filter holder assembly of typical vacuum equipment, wherein said filter holder 90 forms a part for pump unit 70, and described pump unit 70 is normally with the part of vacuum cover 50 one and the top (see Fig. 1) of drum 30 collected by the vacuum equipment being arranged on fragment, dust, sawdust, water and other liquid for collecting dirt form.As shown, common pump unit 70 typically comprises the opening (looking not shown at this) that vacuum hose (such as in FIG 60) is connected to, outlet 74, when fluid is full of described drum 30 as the ball float of the safety precautions for closing described pump unit 70 or float valve 76, with for releasedly described pump unit 70 being fixed to breech lock 54a, 54b of described collection drum 30.Filter holder assembly 90 and other filter holder assembly as described herein comprise first end and one second end, described first end comprises end face (not shown), described second end comprises in contrast to described end face and bottom surface 78 isolated with described end face, in the motor shell that wherein said filter holder assembly is typically connected to vacuum equipment or suction surface 72, described bottom surface can be used for being connected with such as filter as described herein or filter assemblies.Described filter holder assembly 90 away from suction surface 72 ground of described pump unit 70 and the suction surface 72 being essentially perpendicular to described pump unit 70 down extend, and can be formed by molded together with unit 70, or can be the assembly formed independently, the described assembly formed independently uses multiple suitable method of attachment to be connected to described pump unit 70 and is one with described pump unit 70.Described filter holder assembly 90 also typically comprises and being formed for multiple energy absorbing structure ribs 77 of the support of described retainer, and it can work with normally using and absorbing the impact or other stress loading that are applied to described retainer at least in part during operating at described vacuum equipment.Described rib 77 can be formed parallel arrangement as shown in the figure, or may be oriented along other direction multiple, keep desired support structure, such as fore-and-aft tilt is to form the arrangement around " the rotary colorful post (barber-pole) on barber shop doorway " formula of the periphery of described retainer simultaneously.Assembly 90 also can comprise from the bottom surface 78 of described filter holder assembly 90 to downward-extension and be substantially parallel to erection column or the threaded bolt 80 of the bottom surface 78 of described filter holder assembly 90, its far-end can optionally comprise further form, forming head 82, described 82 can work to be remained on described filter holder assembly 90 by described filter assemblies further.Erection column 80 can be the shape of generic cylindrical, or as shown in Fig. 6, hourglass shape can be had, the pedestal of described post is tilted towards the bottom surface 78 of described filter holder assembly 90, described front end 82 is forming heads simultaneously, and the diameter of described head is greater than the diameter of described post itself.Although the described forming head being positioned at described front end 82 place is illustrated as being spherical shape, it does not mean that and is restricted to this shape, and can adopt multiple geometry, as long as the diameter of described head is greater than the diameter of described post 80 at its narrowest some place.Extraly, the sealing that combines between the bottom surface beneficially improving filter assemblies as described herein and described filter holder with the effect of the retaining ring 116 of described annular of the hourglass shape of described post 80.According to the present invention, filter assemblies as described herein is arranged on the bottom surface of described filter holder 90, and a part such as front end 82 of wherein said erection column 80 extends through described opening in the described cap of described filter assemblies and is maintained at suitable position by the elastomeric material of described cap and/or retaining ring or the device relevant to described filter assemblies cap 110.
When constructing of the present invention filter assemblies in disclosed mode here, described filter assemblies 100 (with 300,400 and 600) has the openend contrary with the end cap 110 of described integral type, it is by the end ring 130 of described integral type around (see Fig. 3-5), and the end ring 130 of described integral type is suitable for closely being connected with the outlet part of the described pump unit 70 of described vacuum subassembly.Filter unit assembly 100 shown in Figure 6 is included in the looping pit/opening 118 being positioned at center in the end cap 110 of its integral type, by annular retaining ring 116 around, as previously mentioned.This looping pit is preferably in the front end 82 of the post 80 be diametrically less than on described filter holder.In typical applications, be positioned at the post 80 (or bolt) on the bottom surface 78 of described filter holder assembly 90, as shown, through the described opening 118 in described end cap 110, described hole 118 expansion thus in described filter assemblies makes to allow the described ball (or other shaped portion) on the described front end 82 of described post 80 to pass through, and then pass through in front end 82 original size being retracted to it afterwards again, make the appropriate position remained on by described filter assemblies 100 on described pump unit surface 72.In other words, according to the present invention, the undeformed diameter of the described opening 118 in described end cap 110 is less than the diameter of a part for described erection column, make at assembly process, described opening 118 is diametrically expanding the part being enclosed within described erection column 80, such as, on front end 82, and thereafter diametrically shrink make described filter assemblies remain on described filter holder assembly 90.Due to size and the rubber elastomer characteristics of the retaining ring 116 of described annular described in detail above, described filter unit assembly 100 by the appropriate position closely remained on described filter holder assembly 90, and does not need extra holding device or mechanism, such as nut or similar mechanical device.Due to this installation of described filter unit assembly, when filter assemblies as described herein is kept in position, as shown with described, the end ring 130 of described integral type serves as packing element to form closely cooperating on the sealing surfaces 72 that leans against on described pump unit 70.Extraly, during the operation of vacuum subassembly, vacuum power improves filter seal itself, and described filter assemblies leans against on described shaped filter retainer erection column 80 by this vacuum power with being pulled to tight seal.Of the present invention in some, as being described in greater detail below with reference to Fig. 7 A-7C, when filter assemblies as described herein is connected to described filter holder, described protuberance or erection column 80 cause the distortion of deformable material with the binding energy of opening 118, make described cap present conical shape substantially, the summit of wherein said cone towards or point to away from described motor shell.
According to the present invention, by filter assemblies as described herein, the usual way that such as filter assemblies 100 (or other filter assemblies any as described herein) is connected to the filter holder 90 of wet/dry vacuum equipment comprises the following steps: provide filter holder, the installation protuberance that described filter holder comprises first end and the second end and extends from described second end, described installation protuberance limits installation region; There is provided filter assemblies, described filter assemblies comprises first end, the second end and is arranged in the mounting cap at described second end place of described filter, described mounting cap be at least in part by deformable material make and limit opening; Arrange that described filter assemblies makes described filter assemblies be arranged on described filter holder around described filter holder, and described second end of described filter assemblies is arranged to be less than the distance with the described first end of described filter holder with the distance of described second end of described filter holder; With the described mounting cap of distortion to make described installation protuberance extend through the described opening in described end cap and to make described end cap engage the installation region of described installation protuberance.This method is not used in and limits by any way, but the usual way for using together with system with filter assemblies as described herein.
Fig. 7 A shows the cross sectional representation with the vacuum cleaner installation component according to filter assemblies 100 of the present invention be installed on it, such as, obtain from the exploded view Fig. 6.As there, when filter assemblies 100 is installed on filter holder assembly 90, extending above the top surface 111 of cap 110 and the retaining ring 116 of annular at least partially of post 80.According to aspects more of the present invention, when described post 80 has forming head 82 at its front end place, during the normal operating of vacuum equipment such as wet/dry vacuum cleaners, described forming head 82 is preferably crossed the top of ring 116 and is further worked to be remained on described filter holder 90 by described filter assemblies 100.Fig. 7 A also shows one in several acceptable mode, and wherein end ring 130 coordinates with the sealing surfaces 72 of vacuum equipment pump unit 70 and forms the sealing on the sealing surfaces 72 leaning against described vacuum equipment pump unit 70.The direction of described direction arrow instruction vacuum power during the operation of vacuum equipment, again illustrate the filter seal of the improvement using vacuum subassembly as described herein to be formed, wherein said vacuum power works and to lean against on described shaped filter retainer erection column 80 to be drawn tightly by described filter assemblies.According to the aspect shown in Fig. 7 A, erection column 80 causes the very little distortion of deformable material with the binding energy of opening 118, this deformable material is formed and limits the described cap of 118 or described filter assemblies itself, causes the described cap of described filter assemblies to present the shape of the bottom surface 78 being substantially parallel to described filter holder.
Fig. 7 B shows the cross sectional representation with another vacuum cleaner installation component according to filter of the present invention be installed on it, the surface of wherein said cap 110 ' is nonplanar, and top surface 78 mode of contacts filter retainer 90 is conical.As there, described erection column/protuberance 80 and the joint of the opening 118 ' of described filter assemblies make the deformable material deformation forming described cap 110 ' and limit described opening 118 ' and described optional retaining member 116 ', described cap is made to present conical shape substantially, described conical shape is formed by deformable material, and the summit of described cone is directed upwards towards in the side of the motor shell (not shown) towards described vacuum equipment.
Fig. 7 C shows the cross sectional representation with another vacuum cleaner installation component according to filter of the present invention be installed on it, wherein said cap 110 " top surface be nonplanar, it is Frusto-conical for contacting configuration with the top surface 78 of filter holder 90.As shown in the figure, cap 110 " and the conical butt of top surface 78 of described filter holder configure allow at described filter assemblies 100 " and described filter holder 90 between nonplanar skew with certain angle α, maintain suitable surface contact and sealing made can maintain vacuum between the normal operation operating period simultaneously.As there, the opening 118 of described erection column/protuberance 80 and described filter assemblies " joint make to form described cap 110 " and limit described opening 118 " and described optional retaining member 116 " variable material deformation, described cap is made to present conical shape substantially, described conical shape is formed by deformable material, and the summit of described cone is directed upwards towards in the side of the motor shell (not shown) away from described vacuum equipment.
But Fig. 8-10 shows optional same acceptable embodiment of the present invention.In fig. 8, show filter assemblies 300 in the perspective, described assembly comprises cap portion 310, end ring 330 (not shown) of integral type, and cylinder form, the filtration members 320 of Wrinkled, described filtration members 320 is in the middle of cap 310 and end ring 330.The cap 310 of described integral type comprises two handles parts 312,314 and the shaped hole 316 at described cap center.The same with filter assemblies described above, described handle portion 312 and 314 partly extends on the top of described pleated filter part 320 and edge, and work to allow for user and grip surface is provided, thus help when replacing filter to pull down filter from the filter holder of vacuum equipment.As in fig. 8, described hole 316 in cap 310 be shaped as there is the annular substantially of this size, shape and interior diameter, the shape of similar annulus (taurus-like), the described ball on filter holder or end boss can be forced to upwards and make described filter assemblies remain on described filter holder through described hole 316 and be seated against on the pedestal of described vacuum equipment.As in embodiment described above, after mounting, described cap 310 is formed and the elastic characteristic of the material in especially described hole 316 and physical characteristic allow described end cap 310 to become sealing around the flange (not shown) of filter holder.
Fig. 9 and 10A-10B shows another embodiment of filter assemblies of the present invention.Figure 9 illustrates the perspective view of this filter assemblies 400, described assembly 400 comprises the pleated filter part 420 of the cap 410 of fully integrated formula, flange 412 and 414, cylinder form, and with cap 410 at interval relative (opposite) and be parallel to the end ring 430 of the integral type of cap 410, make described pleated filter part 420 in the middle of them.Cap 410 can be made up of any polymeric material described above, is preferably by such as
polyether polyols with reduced unsaturation or the foam of (can obtain from B.A.S.F. company) are made.The cap 410 of fully integrated formula diametrically extends on the whole top of described filtration members 420, and keep filtration members 420 integratedly partially by antelabium 405, described antelabium 405 is parts of cap 410, and its outward flange around cap 410 and perpendicular to cap 410 end face along the outward flange extended distance d of filtration members 420
6.Flange 412 and 414, as shown here, can have any suitable shape and size and make when installing or pulling down filter 400 that they can be grasped by user, and preferably up to extend from the end face 402 of cap 410.Extraly, although flange 412 and 414 can be formed and use any suitable method to be such as connected to described end face 402 by using binding agent separatedly, flange 412 and 414 preferably forms with cap 410.Figure 10 A shows the assembly 400 of the Fig. 9 obtained along line 9-9 when it is at the side view analysed and observe pulling down period from vacuum filter retainer 500, or alternatively, and as with reference to the filter assemblies 100 be separated shown in above, erection column/protuberance 502 and the joint of the opening 418 of filter assemblies can make the deformable material deformation forming described cap 410 and limit described opening 418, described cap is made to present conical shape substantially, described conical shape is that the summit of described cone that makes formed by variable material is directed upwards towards in the side of the motor shell towards vacuum equipment.As can be more clearly visible in this drawing, the protuberance 502 formed with the end face 501 of the retainer 500 be connected on vacuum equipment (not shown), the opening 418 in the cap 410 of integral type is extended through in mode as described above, the diameter not being out of shape (uncompromised) of wherein said opening 418 is less than a part for described protuberance 502 or the diameter of its front end 504, make at assembly process, described opening 418 is diametrically being expanded to be enclosed within a part for described protuberance 502, and thereafter diametrically shrink make described filter remain on described retainer 500.
Figure 10 B shows the top view of the another aspect of the filter of Fig. 9, wherein said assembly comprises the top cap 410 ' of integral type, two (or more) up extend and the flange 412 and 414 formed on the end face of cap 410 ', pleated filter part 420, and be formed centrally in cap 410 ' and by the annulus formed (taurus) shape retaining ring 416 around hole 418.Be similar to filter assemblies described above, after on the filter holder being arranged on vacuum equipment, form described top cap 410 ' and/or allow described end cap 410 ' around the flange seal of filter holder around the physical characteristic (such as elasticity) of the material of the described retaining ring 416 in described hole 418.The difference of the aspect shown in Figure 10 B and the aspect shown in Fig. 9 is that cap 410 ' has the top diameter of the diameter being less than described filtration members 420, makes the end of filtration members 420 outwards extend across the edge of cap 410 '.
Figure 11 shows the embodiment 600 of the filter assemblies of another aspect of the present invention, comprises multiple handle 612,614.As shown in the figure, described assembly 600 comprises top cap portion 610, bottom end ring 630 and the pleated filter part 620 at interval in the middle of described cap 610 and described bottom end ring 630, and wherein said cap 610 and described end ring 630 are connected in described filtration members 620.Top cap portion 610 comprises the looping pit 616 of the whole thickness extending through it, and the ring 618 of optional annulus (taurus) shape around described looping pit 6516.As figure according to embodiment above propose, ring 618 may be integrally formed on the end face 611 of cap 610, or it such as can be connected by binding agent or mechanical connection by other suitable method of attachment multiple.As shown in the figure, top cap 610 (and/or base ring 618) can have the overall diameter d being greater than described filtration members 620
3overall diameter d
1although, d
1equal d substantially
3or d
3the configuration being greater than d1 is acceptable equally, previously discussed as here.As described above, described top and bottom part 610 and 630 can comprise multiple plastics, metal such as steel or elastomeric material by any suitable material, such as polymeric material or elastomeric material is made, as long as described material to be connected in described filtration members 620 and to have on ball that flexibility makes described cap portion 610 can be enclosed within the front end of described filter holder bar and to form sealing, as described above.Embodiment in fig. 11 comprises four handles part 612a, 612b, 614a, 614b, when being illustrated as the overall diameter outwards extending across described filtration members.Although handle portion 612a, 612b are illustrated as diametrically relative substantially with handle 614a, 614b respectively, this is optional, and multiple handle can right and wrong diametrically relative, as desired.
Described filter assemblies and use the system of this filter assemblies as described herein to be that the filter of vacuum equipment in the market especially wet/dry type vacuum cleaner provides several benefit.Especially, owing to employing a small amount of elastomeric material in the described filter assemblies of formation, filter assemblies disclosed is at present more cheap and is easier to produce.Other benefit comprises replaces or to clean described filter assemblies required time less, and does not comprise troublesome mechanical link, which eliminates the possibility of the loss otherwise part of the necessary connection for described filter.Extraly, filter assemblies as described herein can be easy to improve with install commercially existed and need on the existing vacuum equipment of the filter of these types.Finally, if figure is pointed above, characteristic-the physics of the terminal cap moiety of described filter assemblies with machinery-allow described filter assemblies to be automatically sealed on the erection column of the filter holder of vacuum equipment, this sealing in the normal operation period, and in the fixing maintenance of described filter assemblies of falling down, shake or provide during other undesirable event.
Figure 12 A and 12B show for filter assemblies as described herein with the use of other filter holder assembly, it allows existing assembly to improve to be installed to current filter assemblies (Figure 12 A), with as described herein, change filter holder with the use (Figure 12 B) of the filter assemblies of permitting deformation and threaded nut holding device, as desired.Figure 12 A shows filter holder assembly 700, it comprises the top surface 790 with the threaded bar 780 up extended therefrom, flow through described opening with multiple opening 791 to allow other medium of air or filter downstream and flow in the installation component of vacuum equipment, and discharge subsequently after that, as known in the art.These openings 791 are formed by the rib component 794 of one or more fore-and-aft tilt and one or more circumferential rib 792, described rib component 794 to be formed with the longitudinal axis of described filter holder with becoming the angle of zero degree or non-zero-degree, and described circumferential rib 792 is around the extension of described retainer 700 ground and substantially around described retainer 700.Optionally, the rib 794 of described fore-and-aft tilt or the outer surface of described circumferential rib 792 can, from the outwardly extension of described filter holder, make to allow described filter (not shown) to slide on described retainer when not interfering with described circumferential rib.According to this embodiment, described retainer assembly can comprise the shaped bar 750 of separation, side that is that described bar 750 has an inclination or other shape and polygonal or spherical head, and such as by internal channel 752 that machining tool center substantially is within it formed.Bar 750 is preferably entity, and can be made up of any suitable material according to actual conditions, such as plastics or other suitable polymer, or metal.In use, bar 750 can be threaded onto on the bar 780 of filter holder assembly 700 simply by the screw thread on bar 780, makes it be arranged on top surface 790, substantially concordant with surface 790.In this fashion, old-fashioned vacuum equipment can easily be suitable for using together with filter assemblies as described herein.
Figure 12 B shows another optional filter holder assembly 800 again, described filter holder assembly 800 is similar to filter holder assembly described in fig. 12, and it comprises the top surface 890 of the polygonal bar 850 with the shaping up extended therefrom, with multiple opening 891, flow through described opening to allow other medium of air or filter downstream and flow in the installation component of vacuum equipment, and discharge subsequently after that, as known in the art.These openings 891 are formed by one or more rib component 892 of longitudinally tilting and one or more circumferential rib 894, described rib component 892 to be formed with the longitudinal axis of described filter holder with becoming the angle of zero degree or non-zero-degree, and described circumferential rib 894 is around the extension of described retainer 800 ground and substantially around described retainer 800.Optionally, the outer surface of the described rib 892 that longitudinally tilts or described circumferential rib 894 can make to allow described filter (not shown) to slide at described retainer when not interfering with described circumferential rib from outwardly extending of described filter holder.Assembly shown in Figure 12 B comprises adapter 860 further, and described adapter 960 is suitable for filter holder assembly to be converted to the standard filter retainer assembly with threaded bar from those such as filter holder assemblies as described herein.Adapter 960 be preferably formed machining, extruding or the solid member of mach material (including but not limited to plastics, polymeric material, elastomer, metal and similar material), it has two or more isolated side 863,865, end face 862 and bottom surface 864, described bottom surface 864 in use contacts with the top surface 890 of filter holder assembly 800.The end face 862 of adapter 860 comprises threaded bar 866.Adapter 860 comprises shaped inner portion 870 further, being shaped as suitable shape makes in use, down simply adapter 860 can be shifted onto in the directions of the arrows on the effigurate bar 850 of tool and on it, the bottom surface of described adapter 864 to be contacted with the end face 890 of described retainer.
Figure 12 C-12E shows according to aspects more of the present invention and the further optional filter holder assembly 880 being suitable for using together with filter assemblies of the present invention and 880 '.Figure 12 C shows the fragmentary, perspective view of filter holder assembly 880, described filter holder assembly 880 comprises the surface 882 of the general planar of the bottom of described retainer assembly 880, there is the formed protrusion 884 up extended therefrom, such as erection column or bar.As shown, protuberance 884 can be shaped as and comprise neck region 883 and head part 887, makes the surface 882 of neck region 883 at described retainer assembly and the centre of described head part 887.As illustrated further in fig. 12 c, protuberance 884 may further include one or more outwards outstanding rib 885, described rib 885 to be formed in neck region 883 and around neck region 883, keeps filter assemblies of the present invention further this rib is in order to be inserted into the position on the retainer assembly 880 relevant to such as vacuum equipment described above here during when them.Retainer assembly 880 also comprises rib 886 and one or more circumferential rib 888 of one or more fore-and-aft tilt, described rib 886 to be formed with the longitudinal axis of described filter holder with becoming the angle of zero degree or non-zero-degree, and described circumferential rib 888 is around the extension of described retainer 800 ground and substantially around described retainer 800.These ribs combine the multiple opening 891 as shown in the figure of restriction, it allows other medium of air or filter downstream flow through described opening and flow in the installation component of vacuum equipment as described above, and discharges air subsequently after that.Optionally, the rib 894 of described fore-and-aft tilt or the outer surface of described circumferential rib 888 can from the outwardly extensions of described filter holder, make to allow described filter (not shown) when not sliding on described retainer with when described circumferential rib frictional interference.
Figure 12 D shows according to aspects more of the present invention and is suitable for the perspective view of the further optional filter holder assembly 880 ' used together with filter assemblies of the present invention.Be similar to the retainer assembly 880 of Figure 12 C, assembly 880 ' comprise the basal surface 882 of general planar and longitudinal direction with the rib component 886 and 888 (respectively) of circumference, they combine the such opening 891 limited as discussed earlier.Retainer assembly 880 ' also comprises the formed protrusion 884 outwards extended away from surperficial 882 ground, such as erection column or bar.As shown, protuberance 884 can be shaped as the shoulder regions 881 comprising and raising from the protuberance surface 882, neck region 883 and head part 887, between the shoulder regions 881 making neck region 883 be disposed in described protuberance 884 and described head part 887.Also as there, neck region 883 may further include one or more rib component 885 around described neck region 883, and it can be useful in the appropriate position that will remain on according to filter assemblies of the present invention on retainer 880 '.As shown in the figure, described head part 887 can be such hemispheric shape as shown in the figure, although any shape can be used according to actual conditions, and also can comprise one or more shaping indent (indent) 889, filter assemblies as described herein to be installed on described retainer 880 ' period or from during described retainer 880 ' pulls down described filter assemblies, described indent 889 can serve as the grasping part of user.Figure 12 E is the cross-sectional view of filter holder assembly 880 ' of Figure 12 D intercepted along line 12-12, and clearly show that the spatial relationship of the head of protuberance 884, neck, shoulder and flank, when it away from retainer surface 882 (typically basal surface) outwards extend time.
Of the present invention further in, central seal assembly as described herein, comprise by the collar around the centre bore of annular, the described collar adds intensity and provides the elastomeric confining force of described filter assemblies on the filter holder of vacuum equipment, may be provided in on the isolated element be separated of described filter itself.In the example shown, filter assemblies can comprise Part I and Part II, and wherein said Part I comprises and has shaped filter, optionally comprises the end ring for engaging hermetically with the inner surface of vacuum motor installed part further.According to this aspect, described Part II can comprise the cap portion being positioned at the separation of the looping pit at center that has and extend through from it and around the retaining ring of described looping pit or the collar.During use, the Part I comprising described filtration members by be placed on vacuum subassembly filter holder on, after that the Part II of described separation then by be placed on described first filtration members part top on, make the mounting rod on the bottom surface of described filter holder or post extend through looping pit in described cap portion in mode described above here.Namely, the diameter of described looping pit is preferably less than described erection column at least partially, the diameter of the front end of such as, mounting rod on described filter holder or post (it can be or not be hourglass shape), make when described Part II by push away described mounting rod at least partially on time, described looping pit expansion is to pass through described bar, and then shrink when time on the bottom surface that described Part II leans against described filter holder hermetically the initial diameter getting back to it, therefore described first filtration members part is bonded on the bottom of described vacuum head hermetically.According to this aspect, be similar to aspect described above, lean against on described mounting rod by shrinking, the retaining ring on described Part II or the collar can help described Part II to be remained on the correct position place in described first filtration members part.
Generally illustrate of the present invention several at embodiment described above in Figure 13 A-13E.Figure 13 A, 13B and 13C respectively illustrate cap portion 900,900 ' and 900 " top view, they to have separately in described cap portion and extend through the difform hole of described cap portion, hole or opening (902,904,906).Such as, in figure 13a, opening 902 is keyhole shapes substantially, and be optionally the eccentric bar of in use described filter holder assembly can being moved up and pass described opening 902, thereafter whole filter assemblies displacement, engage the bar of described filter holder and described filter assemblies with making locking, as described herein, the use of retaining ring is optional or unwanted like this.In figure 13a, opening 904 is multiple (two or more) otch in described cap portion 900 ', it allows the bar of described filter holder assembly upwards to extend and passes the top cap portion of described filter assemblies, still allows filter assemblies to lean against on described filter holder simultaneously and forms suitable sealing.Similarly, in Figure 13 C, cap portion 900 " comprise extend through described cap 900 " the single otch 906 of a part, and its allow the bar of filter holder upwards to extend and through the described cap portion 900 of filter assemblies of the present invention ".Advantageously, what allow filter as described herein differently to arrange from having in certain limit at the embodiment shown in Figure 13 C uses together with the different vacuum equipment of the filter holder of shape.Although in order to know the handle formed and supporting member that do not comprise in the drawings as described above, can imagine that obtaining these embodiments optionally can comprise them, as described herein.
In Figure 13 D, show the fragmentary, perspective view of another embodiment according to filter assemblies of the present invention, it comprises cap portion 910, end ring 930 (not shown), with the pleated filter part 920 of generic cylindrical shape, described filtration members 920 extends in the middle of cap 910 and end ring 130 and in closed circumferential paths, and it comprises closed inner track.Described cap 910 optionally can be included in the shaped hole 952 at described cap center further, and center forming openings 952 extends through described cap from the top surface 950 of cap 910 and arrives the closed interior air-flow paths formed by filtration members 120.Although opening 952 is illustrated as being annular substantially, can imagine that obtaining it can have various shape and type, as here here.Also as shown in Figure 13 D, described filter assemblies can comprise the retaining member 960 of separation, and described retaining member 960 is for keeping the filter assemblies coordinated with the filter holder of vacuum subassembly.Usually, can imagine and obtain in use, described filtration members 920 will be placed on the filter holder of vacuum equipment (not shown), then cap 910 will make the bar of described filter holder upwards extend on the top being placed on described filtration members and through opening 952, thereafter retaining member 960 is by slide downward and on described bar, and described assembly is remained on suitable position.According to the present invention, can imagine, cap 110 also optionally can comprise multiple support bar (shown by dashed lines) formed to increase the structural integrity of described cap portion 910, and one or more optional handle (not shown).
Figure 13 E shows another embodiment of the present invention, it is similar to the embodiment shown in Figure 13 D, but wherein said retaining member 988 is connected on the end face 980 of cap 970 by flexure member 987, it can be made up of identical from the material making described cap 970 itself or different materials.In use, once described filter assemblies is placed on the described filter holder of described vacuum equipment, make the described bar of described filter holder up extend through opening 986, then user can upwards extend retaining member 988 by flexure member 987 and on described bar, make whole filter assemblies remain on suitable position.Advantageously, this embodiment allows to use optional filter retaining member 988, this filter retaining member 988 is directly connected on the end face 980 of described filter cap 970, and depends on the specific vacuum equipment that described assembly is connected to and can use or not use.Be similar to cap described above here, cap 970 optionally can comprise one or more support bar (shown by dashed lines) formed, to increase structural strength and the globality of described cap portion 970, and one or more optional handle 982,984, determine according to actual conditions.
Figure 14 A and 14B shows another embodiment of the present invention, snaps over filter module 1000 without opening or hole shown in it, but with the pole cap 1040 itself formed with described filter cap.Filter assemblies 100 comprises the cap portion 1010 of the integral type formed, the end ring 1030 of isolated annular, with the pleated filter part 1020 of generic cylindrical shape, described filtration members 1020 is in the middle of cap 1010 and end ring 1030, and described filtration members 1020 extends in circumferential paths closed substantially and it comprises closed inner track (not shown).As shown in the figure, the cap 1010 of described integral type can be further, optionally comprise the handle 1012 that one or more (showing two) forms, 1014, as shown with described above, around profiled edge or the edge 1017 of the outside of described cap 1010, with opening 1041 (not shown) be formed in described cap, such as formed machining or molded hole or other suitable opening, wherein said opening 1041 is covered by post lid arrangement 1040, described post lid arrangement 1040 up extends from the top surface 1011 of cap 1010.As can see in Figure 14 B and being described in greater detail below, opening 1041 extends through described cap from the top surface 1011 of cap 1010 and arrives the closed interior air-flow paths 1050 formed by filtration members 1020.As illustrated further in Figure 14 A, described cap 1010 also optionally can comprise multiple support bar 1015 formed, to increase the structural integrity of described cap portion 1010.As shown in the figure, bar 1015 can extend radially outwardly from described bowl cover device 1040 towards the edge 1017 of described cap, and optional the thin end of the scroll 1015 and the edge 1017 of described cap are one.Although show two handles parts 1012 and 1014, will recognize that, filter assemblies as described herein can not have handle, there is single handle or have more than two handles, described handle can be located in many ways, such as perpendicular to the end face of described cap portion or in the plane of top surface being substantially parallel to cap, be not limited thereto.
As clearlying show that in Figure 14 B, described Figure 14 B is the cross-sectional view of the filter assemblies 1000 of Figure 14 A obtained along line 14-14, described pole cap or bowl cover device 1040 comprise outer part 1044, in opening to the central area of described filter assemblies 1000 and the inner opening 1041 relative with the end face of cap 1011 and shaping inner region 1042, described inner region 1042 optionally can comprise interior grip portion or gripping device 1046 further.Described pole cap device 1040 is arranged to when described filter assemblies 1000 engages with vacuum equipment as described above, on the described bar being placed on described filter holder or bar head (not shown).According to this embodiment aspect, independent dependence described shaping inner region 1042 or rely on described shaping inner region 1042 described bowl cover device 1040 can be remained on suitable position with the combination of one or more optional gripping device 1046, described gripping device 1046 in order to grasp described filter holder bar or bar head and described filter assemblies 1000 is remained on suitable position, can engage with vacuum equipment.According to some aspect of this embodiment, described lid arrangement 1040 can be hollow substantially, has shaping inner region 1042, and the shape of described inner region 1042 corresponds to its interaction and the described filter holder bar engaged.Although shown lid arrangement 1040 is generic cylindrical in shape, it can have the outer part 1044 of the shape of domed shape or other form, and it is relative with the opening 1041 of described lid arrangement.Described optional gripping device 1046 can comprise one or more elastic arm or equivalent gripping device, make the bar or the bar head that engage filter holder more closely, especially when described bar is not special shaping, but be standard on the contrary, columniform design (be threaded or without screw thread) time.
In representational typical using method, described filter assemblies 1100 to be shifted onto downwards on the filter holder components of the exposure of vacuum equipment and above it simply, the such as type shown in Fig. 6 here substantially, the inner air wherein limited by filtration members 1020 at least in part flowing path 1050 is around the outside of described filter holder assembly.Push away downwards described assembly 1100 make bowl cover 1040 be simply pushed described exposure and on the filter holder bar head down extended.The shaped inner region 1042 of described bowl cover 1040 is less than the outer width of described maintenance hack lever head just, and make when on the maintenance hack lever being pushed in vacuum equipment, described interior zone 1042 is out of shape a little and grasps described maintenance hack lever.Alternatively, and equally acceptably, when comprising one or more gripping device in bowl cover 1040, described interior zone 1042 is by the outer width less times greater than described maintenance hack lever head, make when on the maintenance hack lever being pushed in vacuum equipment, described gripping device 1046 is out of shape a little and therefore grasps described maintenance hack lever.Tension force between described shaped inner region 1042 and described maintenance hack lever or described gripping device 1046 and described maintenance hack lever will work that described filter assemblies 1000 is kept in position and engaged with vacuum equipment, even when vacuum equipment is not by use.
Figure 15 shows the perspective view of another embodiment of the design of filter assemblies 1100 of the present invention.Filter assemblies 1100 is design variations of filter assemblies 100 as described herein, and it comprises the cap portion 1110 of the integral type formed, the end ring 1130 of isolated annular, with the pleated filter part 1120 of generic cylindrical shape, described filtration members 1120 is between cap 1110 and end ring 1130, and described filtration members 1120 extends in circumferential paths closed substantially and it comprises closed inner track (not shown).As shown in the figure, the cap 110 of described integral type can be further, optionally comprise the handle 1112,1114 that one or more (showing two) forms, as shown in the figure, profiled edge or edge 1117, and opening 1118, such as formed machining or molded hole, joint-cutting or other suitable openings, according to actual conditions, described opening 1118 can be formed in the center of described cap 1110, or be formed in described filtration members center, the eccentric part of vertical axis.Opening 1118 extends through described cap from the top surface 1111 of cap 1110 and arrives the closed interior air-flow paths formed by filtration members 1120.Described cap 1110 also optionally can comprise multiple support column 1115 formed to increase the structural integrity of described cap portion 110.As shown in the figure, post 1115 can extend radially outwardly from described opening 1118 towards the edge 1117 of described cap, and optionally post 1115 and the edge 1117 of described cap are one.In non-limiting mode, and as shown in the figure, described handle portion 1112 and 1114 can be diametrically relative substantially in orientation, and partly extending on the top and edge of described pleated filter part 1120 and make to allow for user grip surface is provided, pulling down filter with the help when replacing filter from the filter holder of vacuum equipment.Although show two handles parts 1112 and 1114, but will recognize that, filter assemblies as described herein can not have handle, there is single handle, have more than two handles, can directed described handle in many ways, such as, perpendicular to the described top surface of described cap portion or in the plane of top surface being substantially parallel to cap 1110, but be not limited thereto.Also as in fig .15, opening 1118 in cap 1110 can optionally by integratedly or the retaining ring 1116 of annular that formed of not integrally around, described retaining ring 1116 has this size, similar annulus (taurus-like) (annular) shape of shape and interior diameter, ball on the front end of the installation shaft of the filter holder of vacuum equipment or front end boss can be forced upwards in mode described above here and pass described opening 1118, to make filter assemblies of the present invention remain on described filter holder and to be seated against on the pedestal of vacuum equipment.If retaining ring 1116 is integral types, the part as manufacture process is shaped in cap 1110 by it.When described ring 1116 is non-Unitary and is the element of the separation of described filter assemblies, can by many suitable chemistry (such as, bonding) or the method for machinery it is connected on described top surface 1111, but to be not limited thereto.
In figure 16, to be similar to the perspective view that the mode occurred in fig .15 shows the design of filter assemblies 1200.As there, described filter assemblies 1200 comprises the cap portion 1210 of the integral type formed, end ring 1230, with the pleated filter part 1220 of generic cylindrical shape, described filtration members 1220 in the middle of cap 1210 and end ring 1230 and closed, circumferential paths extends, and it comprises closed inner track (not shown), be similar to the design of filter assemblies 100 described above.As shown in the figure, the cap 1210 of described integral type further, optionally can comprise one or more (showing two) such handle 1212,1214 be shaped integratedly as shown, the medial side be shaped is along 1217, opening 1218, such as formed machining or molded hole, joint-cutting or other suitable opening, according to actual conditions, described opening 1218 is formed in the center of described cap 1210, or be formed in described filtration members center, skew place of vertical axis.Opening 1218 extends through described cap from the top surface 1211 of cap 1210 and arrives the closed interior air-flow paths formed by filtration members 1220.Described cap 1210 also optionally can comprise multiple support column 1215 formed to increase the structural intergrity of described cap portion 110.As shown in the figure, post 1215 can extend from described opening 1218 towards the medial side of described cap radially outwardly along 1217, and optionally with described medial side along 1217 be one.Also as in figure 16, the cap 1210 of filter 1200 may further include outer edge region 1219, described outer edge region 1219 outwards extends a distance around described edge 1217 substantially, the outward flange 1222 making it substantially with the outward flange (diameter d of described filtration members 1220
3) in same level, do not extend across the outward flange (diameter d of described filtration members 1210
3).In non-limiting mode, and as shown in the figure, described handle portion 1212 and 1214 can be diametrically relative substantially in orientation, and can partly extend on the top and edge of the filtration members 1220 of described Wrinkled, making to allow for user provides grip surface to help when replacing filter to pull down filter from the filter holder of vacuum equipment.Although show two handles parts 1212 and 1214, but will recognize that, filter assemblies as described herein can not have handle, there is single handle or more than two handles, can with handle described in multiple azimuthal orientation, such as perpendicular to the end face of described cap portion or in plane parallel with the top surface of cap 1110 substantially, but be not limited thereto.Also as in figure 16, described opening 1218 in cap 1210 can optionally by integratedly or the retaining ring 1216 of annular that formed of not integrally around, described retaining ring 1216 has such size, the general shape of shape and interior diameter, ball on the front end of the installation shaft on the filter holder of vacuum equipment or front end boss can be forced upwards and by described opening 1218 in the mode as here discussed above, to make filter assemblies 1200 of the present invention remain on described filter holder (not shown) and to be seated against on the pedestal of vacuum equipment.If retaining ring 1216 is integral types, preferably the part as manufacture process is formed in described cap 1210 by it.When ring 1216 is not integral type and is the element of the separation of described filter assemblies, can by many suitable chemistry (such as, bonding) or the device (such as by the flexible hanger part of elastomeric material) of the method for machinery or machinery it is connected to described top surface 1211, but be not limited thereto, as described above.
Preferably and in the context of other embodiment describe the present invention, and do not describe each embodiment of the present invention.Obvious amendment and the change of described embodiment are available for those of ordinary skill in the art.Embodiment that is disclosed and that do not disclose is not used in restriction or limits scope of the present invention or the applicability of applicant's design; on the contrary; in accordance with Patent Law, applicant want to protect all this fall into the equal description of claim below for this scope or region in the amendment of all scopes and improvement.
Claims (20)
1., for a filter for wet/dry vacuum cleaners, described filter comprises:
Central longitudinal axis;
Cap, described cap has end face and contrary bottom surface, and looping pit, the diameter of described looping pit is less than the diameter of described cap, described looping pit extends through the center of described cap about the described central longitudinal axis of described filter, described cap comprises the one or more handles be integrally formed, and described one or more handle extends on the outward flange of described filter, makes the diameter between the outward flange of described handle be greater than the overall diameter of filtration members;
Support bar on the end face of described cap; With
Filtration members, described filtration members to be disposed under described cap and to extend in the circumferential paths forming closed inner track, and described filtration members and described cap form as one, to form independent filter assemblies;
Wherein the described looping pit of location placed in the middle be kept structure around,
Wherein said cap is made up of the flexible material being connected to described filtration members, and
Wherein when described cap wet with described/the filtration members retainer of dry vacuum cleaners coordinate time, in the plane above the top surface that described cap is sealed in described filtration members.
2. filter as claimed in claim 1, wherein said looping pit limits without hindrance region.
3. filter as claimed in claim 1, wherein said one or more handle be integrally formed is positioned at the plane identical with the end face of described cap.
4. filter as claimed in claim 1, wherein said multiple handle be integrally formed is diametrically relative.
5. filter as claimed in claim 1, wherein said multiple handle be integrally formed is relative in non-diametric(al).
6. filter as claimed in claim 1, wherein said cap comprises the described handle of one or more end face perpendicular to described cap further.
7. filter as claimed in claim 1, wherein said end face is substantially flat.
8. filter as claimed in claim 1, wherein said filtration members is cylindrical shape, oval shape, cone shape, filtration members that is oval or rectangular shape.
9. filter as claimed in claim 1, wherein said filtration members is made up of paper, cloth, polymeric material, fibrous material or HEPA shaped material.
10. filter as claimed in claim 9, wherein said filtration members comprises at least one bacteriostatic agent and/or bactericide further.
11. filters as claimed in claim 1, wherein said flexible material is metal, polymeric material or elastomeric material.
12. filters as claimed in claim 11, the wherein said elastomeric material two-component-type polyurethane foam plastics material that to be the elongation determined according to ASTMD-1564 be from 90% to 200%.
13. filters as claimed in claim 1, wherein said holding structure is retaining ring, and described retaining ring and described cap are integrally formed.
14. filters as claimed in claim 1, wherein said holding structure is retaining ring, and described retaining ring and described cap are not integrally formed.
15. filters as claimed in claim 1, also comprise the end ring of annular, and described end ring around described filtration members, and is positioned such that the centre of described filtration members at described cap and described end ring.
16. 1 kinds of filters for wet/dry vacuum equipment, described filter comprises:
Cap, described cap has the opening of the location placed in the middle extended through from it;
The end ring of annular, described end ring also has the opening of the location placed in the middle extended through from it;
Filtration members, described filtration members to be disposed between described cap and described end ring and to extend in the circumferential paths forming closed interior zone; With
Pole cap, described pole cap limits the interior zone around the opening of the location described placed in the middle in described cap,
Wherein said cap and described end ring are made up of the flexible material being connected to described filtration members.
17. filters as claimed in claim 16, the opening of the location described placed in the middle in wherein said cap be kept collar around.
18. filters as claimed in claim 17, wherein said retaining ring and described cap are integrally formed.
19. filters as claimed in claim 17, wherein said retaining ring and described cap are not integrally formed.
20. filters as claimed in claim 16, grip portion in the described interior zone of the shaping of wherein said pole cap also limits and can engage with filter holder bar.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US12/243,921 | 2008-10-01 | ||
| US12/243,921 US8206482B2 (en) | 2008-07-04 | 2008-10-01 | Vacuum appliance filter assemblies and associated vacuum systems |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101711657A CN101711657A (en) | 2010-05-26 |
| CN101711657B true CN101711657B (en) | 2016-01-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910179163.XA Active CN101711657B (en) | 2008-10-01 | 2009-09-29 | Vacuum appliance filter assemblies and associated vacuum systems |
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| CN (1) | CN101711657B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5070322B2 (en) * | 2010-09-24 | 2012-11-14 | シャープ株式会社 | Electric vacuum cleaner |
| DE102012022848B4 (en) * | 2012-11-23 | 2018-03-08 | Mann + Hummel Gmbh | Filter element with support tube |
| CN104161484B (en) | 2013-05-17 | 2017-10-10 | 天佑电器（苏州）有限公司 | Filter and the dust catcher using the filter |
| CN106388705B (en) | 2016-11-08 | 2018-11-06 | 苏州欧圣电气股份有限公司 | Filter assemblies, filter device and dust catcher |
| CN110169735A (en) * | 2019-01-25 | 2019-08-27 | 苏州欧圣电气股份有限公司 | A kind of dust catcher |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5783086A (en) * | 1995-09-29 | 1998-07-21 | W. L. Gore & Associates, Inc. | Filter for a wet/dry vacuum cleaner for wet material collection |
| US6598263B2 (en) * | 2001-05-09 | 2003-07-29 | The Hoover Company | Vacuum cleaner dirt collecting system with filter cleaning devices |
| JP2005315164A (en) * | 2004-04-28 | 2005-11-10 | Kawasaki Heavy Ind Ltd | Air cleaner device of vehicle engine |
| US7374594B2 (en) * | 2005-11-23 | 2008-05-20 | Emerson Electric Co. | Filter and system for improved sealing and ease of attachment on a vacuum cleaner |
| US7374595B2 (en) * | 2005-11-23 | 2008-05-20 | Emerson Electric Co. | Filter and system for improved sealing on a vacuum cleaner |
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