MXPA97000660A - Agitator for aspirad filter - Google Patents

Abstract

The present invention relates to a filter agitator arrangement, characterized in that it includes: a) a filter at least partially in the form of an open bag b) a frame placed around at least a part of the filter c) the frame is resilient so that it is capable of elastic deformation, d) the filter expands between the imposition of air flow through it which causes the frame to also expand, e) the filter returns to its original state not expanded before the interruption of the air flow and the elastic contraction of the frame, f) the frame includes a series of arms that extends at least partially around the filter, g) the arms extend upwards along the filter bag shape to provide upwardly extending portions, h) the portions of the upwardly extending ribs bend at the tops to form doubles, and i) the downwardly depending portions of the arms. also extends from the folds to be placed inwardly of the portions of arms that extend upwards so that they are insertable in a central depression formed in the form of an arrow.

Description

* AGITADOR FOR VACUUM FILTER BACKGROUND OF THE INVENTION rywipn e invention This invention relates to filter arrays and, more specifically, relates to the agitation of such a filter array.

Summary of the prior art It is known to provide some type of mechanism for shaking or shaking a center to detach, for example, the powder adhered to it. Such mechanisms include at least partially elastic structures, placed in the lower part of the filter which agitate due to the vibrations of the motor or which contract elastically with filter form tends to partially collapse under suction conditions only to expand again upon suspending the suction However, there is no known filter fixing arrangement placed on the outside, which expands elastically, which can expand as the center expands, during the suction air flow and which then returns REF: 23745 to its original form at the end of the suction, which forces the filter to return to its original state not expanded and that tends to expand the dust adhered to it. Such a filter and frame arranged can be very advantageous, for example, for use in a vacuum cleaner, especially one having the characteristic of the dust container. Accordingly, it is an object of the invention to provide an improved filter agitator arrangement. It is a further object of the invention to provide an array or filter agitator arrangement that includes a structure placed around the filter. It is a further object of the invention to make the surrounding filter structure at least partially elastic. It is a further object of the invention to provide a filter agitator arrangement which is easily adaptable for use with a vacuum cleaner utilizing a dust container. It is further an additional object of the invention to use a filter agitator structure that includes a flexible hinge that aids in filter cleaning. It is a further object of the invention to provide a filter agitator arrangement that includes effective sealing for the flow of air through its filter.

BRIEF DESCRIPTION OF THE INVENTION The invention comprises the use of a dust separating filter and its agitator mechanism mounted inside the upper part and extending upwards, outwards from a dust container in a vacuum with a dust container. The flow of the suction air with dust that is made through the side of the dust container and towards the top, towards the filter, as it is moved by a fan motor system placed in a housing section above the filter. The filter is made of cloth and generally has the form of a bag having its open end deployed downwards, so that the suction air can move freely inside it to pass outwards, towards the upper part of the dust container, to deposit the powder in the container. This filtering process also inherently includes a certain portion of the powder which is deposited and adhered to the inner surface of the filter bag fabric. This adhering powder eventually clogs a good portion of the filter cloth, which limits the passage of suction air therethrough so that a means to detach the powder is needed. A filter agitator frame is placed on the outside of the filter bag which includes a sealing arrangement adjacent to its upper and lower surface to seal it to the inner peripheral surfaces of the motor blower housing of the powder container. It also includes an inner, lower flange, to provide a seaming surface for permanently sewing the lower part of the filter bag to the agitator frame. Extending upwards from an integral flat face of the agitator frame in the upper terminal part of the inner flange, lower, is a series of six integral arms. These arms are grouped, three at each end of the filter bag, so that each is curled or curved downward, to a central bag configuration of the bag. They are integrally joined together to a small oval frame that extends horizontally, placed in the lower part of the central pocket. The arms and their connection to the oval frame are sufficiently elastic to flex due to distortion of the filter bag when suction is applied to initiate the cleaning action of the vacuum cleaner. During this time, the filter bag is distorted outward, which causes the flexible arms to bend outward, which shortens their height and move the oval frame upwards. When the vacuum is turned off, the suction air flow is suspended and the oval arms and frame return flexibly to their original position, forcing the filter bag back to its original position. This tends to agitate the adhering dust separating it from the inner surface of the filter bag to maintain the efficiency of the cleaning effort.

BRIEF DESCRIPTION OF THE DRAWINGS Reference can be made to the appended drawings for a better understanding of the invention, but insofar as their organization and function, the illustration only shows a preferred embodiment, which is exemplary only and in which: Figure 1 is a cross-section, in elevation, longitudinal of the vacuum dust container containing the filter shaker frame of the invention; Figure 2 is a top perspective view of the powder container, the filter bag and the agitator frame; Figure 3 is an elevation view of the filter bag and the agitator frame in an undistorted condition; Figure 4 is an elevation view, in cross section thereof; Figure 5 is a top plan view thereof; and Figure 6 is another elevational, cross-sectional view of the filter bag and the agitator frame, but also showing the agitator frame in its approximate distorted state.

DETAILED DESCRIPTION OF THE INVENTION Shown in Figure 1, a vacuum cleaner 10 with a dust container which, in this case, takes the form of a vertical vacuum cleaner. The vacuum cleaner 10 with dust container includes an outer housing 12 within which a motor fan system 14 is confined. A handle (not shown) can be conveniently attached to the upper end of the outer housing 12. At the lower end of the vacuum cleaner 10 with a dust container, a suction tube 16 is attached to which is attached a work nozzle (not shown) that extends upwards to communicate laterally with a powder container 18 through a hole 20 placed on the upper side thereof. A latch 22, partially mounted to the suction tube 16 and partially mounted to the bottom of the powder container 18, removably attaches the dust container 18 to the vacuum cleaner 10 with dust container. A filter 24 in the form of an upwardly open bag, oblong in cross section, to maximize the area of the bag, is placed inside upper extension bars of the powder container 18 that when mounted within the frame 26 agitator . This frame and the filter bag extend upwardly beyond the powder container 18, to be housed in a suction chamber 28 of the vacuum cleaner 10 with dust container, immediately below the motorized fan system 14. The agitator frame 26 is a thermoplastic elastomer and is therefore flexible and deformable. Such material is sold under the trademark "Santoprene" by Advanced Elastomen Systems, L. P., Ohio A ron. It includes a lower sealing frame means 30 having a lower outer projection 32 and an upper interior projection 34. Both protrusions are deformed to ensure a proper seal. The outer projection 32 telescopically engages, downwardly sealing, against the inner periphery of the powder container 18, while the inner projection 34 butts upward against the lower portions 36, 38 of the outer housing 12 of the vacuum cleaner 10 with dust container. The powder container 18 includes a serrated or slotted portion, which extends vertically on its rear side which fits around and telescopically receives the upper portion of the suction tube 16. The outer projection 32 has an outer periphery (FIG. 5) shaped to receive the shape of the upper portion of the powder container 18 that includes the toothed portion 40. The inner projection 34 is oblong and somewhat curvilinear in size to be positively and sealingly engaged against the portions of the lower part 36, 38 of the outer housing 12 of the vacuum cleaner 10 with dust container. A more detailed and thorough description of the coupling or general arrangement of the vacuum cleaner 10 with dust container can be found in the reference to the Hoover 2449 case sent to the Patent Office on January 30, 1996 and entitled "Latchable Dirt Cup for Hard Bag Stick Cleaner "(" Container for dust that can be closed for a vertical vacuum with a rigid bag "). This case is mentioned as a registration reference of this, in this application. The protrusions 32 and 34 of the sealing frame means 30 extend completely around the periphery of the sealing frame means 30 and are positioned to extend slightly outwardly to provide these stamps with a generally conical effect, except in the volume occupied by the toothed portion 40 of the powder container 18. This provides the lower outer projection seal 32 with a weld seal assembly with the powder container 18 and the upper interior projection 34 with a stop face seal that deforms out elastically with the outer housing 12 for This way adapt to the imperfections in the sealing faces. The seal 32 of the lower outer projection is thickened in its cross-section in the lower part to provide additional resistance to the projection with this element for a firmer wedge seal. The agitator frame 26 also includes a downward, continuous, internally sloping flange 42 which is integral with the projections 32 and 34 and is connected thereto by the connecting reinforcements 44 and 46. The projection 42 is generally oblong when it observes in plan and extends sufficiently below the lower outside projection 32 to provide an area for a seam line 45 which securely connects or joins the bag filter 24, placed inside the agitator frame 26, with the flange 42 Extending upwards from a flat part 47 of the agitator frame 26 are a series of arms 48, 48, 48, 48, 48 and 48 which provide the elastic deformation for the agitator frame 26 and thus its agitator function. These arms take the cross-sectional shape of "T" shaped beams so that their strength increases. The flat part 47 is limited near its outer perimeter by the upper interior projection 34. Therefore, it serves as a member that provides general stiffness of the agitator frame 26 as well as a place for the lower attachment of the arms 48, 48, 48, 48, 48 and 48. On the inside of these arms and extending between the arms. there is an oblong hole 50 formed by a flat part 47. This oblong hole is dimensioned in a manner similar to the inner periphery of the flange 42 which slopes downwardly so as to maintain a substantially continuous cross-sectional area of the filter bag 24 in those positions. The arms 48 extend upwardly from the flat part 47 in a slightly inclined manner by means of the arm portions 52 so as to constitute a truncated conical shape. This helps to mold the frame 26 agitator. At the upper ends of the arm portions 52, each includes a curvature 54 substantially 180 ° extending to the portion 54 of the arm placed downward. This arm configuration provides maximum inward folding of the filter bag 24 and therefore increases its effective cross-sectional area.

Each of the curvatures 54 of each of the arms includes a pair of inner and outer turns 58, 60. During the expansion of the filter bag 24 (FIG. 6) and while suction is applied to the motor fan system 14, these turns deform easily, which allows the agitator frame 26 to deform, driving the filter bag 24 expansively before of its flexible return to its position without suction. There is also some deformation in the same arms 48.

The arm portions 56 placed downward terminate in an internal frame 62, oblong extending horizontally integrally shaped in a cross section similar to the filter bag 24 but smaller so that it fits inside the bag and the remaining portion of the agitator frame 26. This frame, due to the pressure of the bag imposed collectively in its flat area, acts in some way as a plate to thrust plate for the agitator frame 26, to expand this against its own Inherent resilience, although the arrangement of the full arm of the agitator frame 26 as mentioned above, is also driven by the filter bag 24 in an expansive motion.

The joints or joints 63, 63, 63, 63, 63 and 63, formed in the lower integral joints of the arms 48, 48, 48, 48, 48 and 48 with the internal frame 62 oblong, hinge or articulate easily during this deformation allowing the arms 48 to move outwards while the oblong internal frame 62 moves upwards.

The arms 48, 48, 48, 48, 48 and 48 are placed with three of each of the ends of the upper portion of the filter bag 24. Each arrangement of the three arms 48, 48 and 48 is placed with one in half of the end of the filter bag 24 and one along each of its sides, near the end of the filter bag 24. This arrangement distributes the expansion force of the filter bag 24 reasonably equal so that the agitator frame 26 does not distort unevenly anywhere along its outer periphery. These arms also prevent and limit the introduction into the bag of the volume occupied by the fan of the motor-fan system.

The structure of the agitator frame 26 is complemented by a pair of trillions or keys 64, 64 extending upwardly in the flat portion 47 which strike a portion of the lower portion 36 of the outer housing 12 to ensure proper seating of the agitator frame. 26 and that the bag filter 24 is included inside the dust container 18.

The filter bag 24 is made of a substantially non-polished filter material with non-woven characteristics so that an undistorted position could be assumed essentially when it is not under cleaning suction conditions.

The inclusion of the arms 48, 48, 48, 48, 48 and 48 downwards thereof during the assembly of the filter bag 24 and the agitator frame 26 forms a pouch 66 downwards in the filter bag 24 in this way providing a maximized filter area before for the suction flow of air in the vertical vacuum 10.

The operation of the invention will now be evident. The agitator frame 26 through the invisible joints or joints 63, bends 54 and arms 48 are distorted as shown in Figure 6 as they are propelled through the invisible joints or joints 63, bends 54 and arms 48. they are distorted as shown in figure 6 as they are driven by the filter bag that expands during the operation of the vacuum cleaner. To suspend the operation of the vacuum cleaner, residual and persistent flexibility.

It is noted that in relation to this date, the best method known by the applicant to carry out the aforementioned invention, is the conventional one for the manufacture of the objects or products to which it refers.

Having described the invention as above, property is claimed as contained in the following:

Claims (12)

1. An array of filter agitator, characterized in that it includes: a) a filter at least partially in the form of an open bag; b) a frame placed around at least part of the filter; c) the frame is flexible so that it is capable of elastic deformation; d) the filter expands before the imposition of an air flow through it which causes the frame to also expand; and e) the filter returns to its original unexpanded state upon interruption of the air flow and elastic contraction of the frame.

2. The filter agitator arrangement according to claim 1, characterized in that: a) the frame includes a series of arms that extend at least partially around the filter.

3. The filter agitator arrangement according to claim 2, characterized in that: a) the arms are grouped at the ends of the upper end of the bag shape.

4. The filter agitator arrangement according to claim 2, characterized in that: a) the series of arms is a total of six.

5. The filter agitator arrangement according to claim 2, characterized in that: a) the arms extend upwards along the filter bag shape to provide portions extending upwards.

6. The filter agitator arrangement according to claim 5, characterized in that: a) the portions of arms that extend upwards are bent at their upper parts to form curves; and b) the downwardly hanging arm portions also extend from the curvatures to be placed downwardly from the upwardly extending arm portions so that they are insertable into a central depression formed in the form of a bag.

7. An elastomeric filter shaker frame, characterized in that it includes: a) a series of arms; b) the arms each have at least one turn or intermediate twist at their ends; and c) each of the turns acts in a deforming manner for the elastomeric filter stirrer frame.

8. The elastomeric filter agitator frame according to claim 7, characterized in that: a) a curvature of substantially 180 ° is formed by a couple of turns.

9. The filter agitator arrangement according to claim 1, characterized in that: a) the filter agitator structure is placed in a vacuum with a powder container having a dust container and a housing, - b) the filter frame is placed sealingly down in the dust container of the vacuum cleaner; and c) the filter frame is seated upwardly in the housing of the vacuum cleaner.

10. The filter agitator arrangement according to claim 9, characterized in that: a) the downward seal of the dust container is formed by an outgoing seal, - and b) the upward seal is also formed by an outgoing seal, - so that the integrity of the seal is maintained between the dust container, the filter, the frame and the housing of the vacuum cleaner.

11. The filter agitator arrangement according to claim 6, characterized in that: a) the downwardly sloping arm portions terminate in a lower planar frame, - and b) the planar frame serves as a drive plate to help expand the agitator arrangement of filter during its movement of expansion and contraction.

12. The filter arrangement according to claim 11, characterized in that: a) a joint or joint is formed at the termination of each of the downwardly sloping arm portions and the lower plane frame; b) each of the joints acts as a hinge or flexible joint to the extent that the filter agitator arrangement expands and contracts.