MXPA97002314A - Filter of fine particles for aspirad - Google Patents

Abstract

A new filter of fine particles for vacuum cleaner is described. The filter includes a non-woven flexible media material disposed in a series of adjacently placed pleats extending in a circumferential path and vertically supported by a frame, the frame giving the internal support corresponding to the folds placed adjacently; The upper and lower end caps are sealed to the opposite ends of the filter and the frame, at least one of the end caps has an opening that is surrounded by a packing that prevents leakage between the filter of the vacuum cleaner and the housing of the vacuum cleaner. the one that mounts the filter of the aspirated

Description

FINE PARTICLE FILTER FOR VACUUM CLEANER BACKGROUND OF THE INVENTION The present invention relates to a filter for vacuum cleaner, and very particularly, to a filter of fine particles for vacuum cleaner which is particularly adaptable for use in connection with an industrial vacuum cleaner for dry or wet surfaces. Vacuum cleaners need filters that prevent debris from falling back into the area that is being cleaned. Currently, pleated paper filters to be spread out in a peripheral area are used for this purpose. These existing pleated paper filters stop 99.99% of all particles of 10 microns or more, assuming that the pleated paper filter has no production defects such as tears, holes, being badly stuck, etc. Unfortunately, all defects in the production process can not be eliminated. In addition, by collecting fine dust particles such as the ashes of a chimney, the existing pleated paper filters allow a cloud of dust to fall for several seconds in the room being cleaned and then the filter is resealed. Obviously, it is not desirable that there is any discharge of dust in the room being cleaned. In addition, existing pleated paper filters allow a constant stream of fine particles (less than 10 microns) to exit through these filters. As will be seen from the discussion that follows, the fine particle filter for vacuum cleaner of the present invention utilizes a flexible nonwoven media element which is mainly used for high efficiency filtration purposes, but in this particular case, the Non-woven flexible media element is supported by a frame to provide a high efficiency self-supporting filter for use in vacuum cleaners, especially in industrial vacuum cleaners for dry or wet surfaces. As a result, the fine particle filter for vacuum cleaners of the present invention is constructed as a high efficiency fine particulate filter that prevents large or small particles from falling back into the area being cleaned. Specifically, the filter of the present invention is constructed so that, when operated as desired, it is able to stop up to 99.99% of the particles of one or more.

BRIEF DESCRIPTION OF THE INVENTION Among the many objects and advantages of the present invention include: A new and improved fine particle filter for vacuum cleaner of high efficiency; The provision of the aforementioned filter which is specially constructed to be used in connection with industrial vacuum cleaners for dry or wet surfaces; The provision of the aforementioned filter that overcomes the production defects of the previous filters, to prevent the particles from falling back into the area being cleaned; The provision of the aforementioned filter which is constructed so that, when operated as desired, it is able to stop up to 99.99% of all particles of one or more miera; The provision of the aforesaid filter including non-woven high efficiency filtration means that are vertically supported on a frame extending in a given area to provide an element of self-support to the filter; The provision of the aforementioned filter that provides internal circumferential support and lateral end support for a flexible element of high efficiency nonwoven filter media. The provision of the aforementioned filter that is relatively inexpensive and simple in its construction; it is easily manufactured; it is durable; and on the other hand it adapts very well to the desired purposes. In summary, the fine particle filter for vacuum cleaner of the present invention includes a flexible filter of predetermined height that is vertically supported by a frame to extend over a certain area. In the preferred modality, the trajectory Redefined is a circumferential path and the frame provides internal support for the flexible filter within the circumferential path. The frame also flanges lateral support to the flexible filter at opposite ends. The flexible filter is made of a flexible non-woven material which is arranged in a series of adjacently extending folds extending in a circumferential path and resting vertically by means of a frame. The folds that are in adjacent position are supported in a frame that is in the circumferential path of the folds that are in adjacent shape. Adjacent folds are also supported by a frame at opposite ends free of the folds that are adjacent. Preferably, flexible non-woven material is constructed to stop 99.99% of all particles, when functioning as desired, of one size or greater. In this connection, the flexible non-woven material is a composite of three layers of non-woven material blown under melting, spin-linked and lifting. The frame within the adjacently placed folds is an open mesh frame that also has a folded construction, which provides the internal support corresponding to the folds of the flexible filter that are adjacent. The open mesh frame is preferably an aluminum wire frame covered with an epoxy layer for attaching the flexible filter to the frame. At the free opposite ends of the folds that are adjacent to the flexible filter material, the upper and lower end layers are sealed to the folds that are adjacent and the frame extends into the folds that are in the folds. adjacent shape. The upper and lower end caps are sealed to the opposite free ends of the folds that are adjacent and to the frame by means of an adhesive material. At least one of the end layers has an opening that is surrounded by a packing to prevent leakage between the vacuum cleaner filter and the vacuum cleaner housing in which the filter is mounted thereon. These and other objects and advantages of the present invention will become more apparent from the description that follows.

BRIEF DESCRIPTION OF THE DRAWINGS In the drawings, Figure 1 is a perspective view of the filter of the fine particles for vacuum cleaner of the present invention; Figure 2 is an exploded and scaled perspective view illustrating the different components forming the fine particulate filter for suction of the present invention; Figure 3 is an elevated side view of the fine particle filter for vacuum cleaner of the present invention; Figure 4 is a sectional view of the filter of fine particles for vacuum cleaner as seen along lines 4-4 of Figure 3; Figure 5 is a sectional view of the filter of fine particles for vacuum cleaner as seen along lines 5-5 of Figure 4; and Figure 6 is a side elevational fragmentary view, partly in section, of an industrial vacuum cleaner for dry or wet surfaces, in which the fine particulate filter for vacuum cleaner of the present invention is used. The corresponding reference numbers will be used throughout the various figures of the drawings.

DETAILED DESCRIPTION OF THE PREFERRED MODALITIES The following detailed description illustrates the invention as an example and not in the form of limitation. This description will clearly allow one skilled in the art to make and use the invention, and describe various embodiments, adaptations, variations, alternatives and uses of the invention, including what is currently believed to be the best mode of carrying out the invention. The filter 1 of fine particles for vacuum cleaner of the present invention was constructed to prevent large and small particles that have already been collected from falling back into the area being cleaned. Primarily, the fine particulate filter for vacuum cleaner 1 is mainly used with industrial vacuum cleaners for dry or wet surfaces, as will be seen below in connection with Figure 6. Filtering 1 of fine particles for vacuum cleaner was constructed from several different components , as best illustrated in the exploded perspective view of FIG. 2. A flexible filter 3 of a predetermined height is vertically supported by a frame 5 to extend in a predetermined path. Specifically, the flexible filter 3 extends in a circumferential path, as illustrated in the drawings to be generally cylindrical, with the frame 5 giving an internal support to the flexible filter 3 within the circumferential path. The flexible filter 3 is preferably constructed of a flexible nonwoven material that is generally used in the filter industry. For this purpose, the filter product from Hollingsworth to Voss AS-9004-AF is one of the preferred examples. Said filter is formed of a composite of three layers of nonwoven material blown under melt, filtered by spinning and lifting. Said material is highly efficient to avoid the flow of small or large particles through the filter. Specifically, the filtering material is constructed to stop 99.99% of all particles that are one or more, when functioning as desired. In order for the columns to have the necessary force for a filter in an industrial vacuum for dry or wet surfaces, the flexible filter must be supported vertically to extend in a circumferential path. For this purpose, it will be seen that the flexible filter 3 is pleated with a series of adjacent folds 7 which correspond to the series of folds of the frame which are also adjacently 9 which are formed in the frame. In fact, it is preferable to pleat the flexible filter 3 and the frame 5 together to produce a frame structure, in which the folds of the frame 9 give the corresponding internal support for each of the folds 7 of the flexible filter 3. Preferably, the frame 5 is an open net pleated frame formed of an aluminum wire covered with an epoxy layer. When the flexible filter 3 and the frame 5 are pleated together, the aluminum wire frame covered with an epoxy layer 5 allows the frame 5 to be attached to the interior of the flexible filter 3. In this way, the frame 5 with its corresponding internal support folds 9 can provide the necessary force in the column to adjacent folds 7 in flexible filter 3 for use in a vacuum cleaner. The manner in which the folds of the frame 9 give the necessary internal support to the folds of the flexible filter 7 is best seen in Figure 4 of the drawings. Also seen in Figure 4 is a U-shaped filter 11, which helps to secure together the folds 7 of the flexible filter 3 and the folds 9 of the frame 5. While the folds are in an adjacent form 9 of the frame 5 Given the internal support corresponding to the adjacent flexible folds 7 for the flexible filter 3, it is also appropriate to give lateral support to the flexible filter 3 and the frame 5. For this purpose, the opposite end caps 13, 15, either molded by injection or thermoforde adas a suitable plastic material. Each of the upper and lower end caps 13, 15 are constructed to seal both the flexible filter 3 and the frame 5 through adhesive material 17, 19. In Figure 2 of the drawings, the adhesive material 17, 19 is illustrated in the form of a flat washer for identification purposes, it being understood that the adhesive 17 is poured or captured into a well or depression in the top cap 13, while the adhesive 19 is poured or captured in the well or depression of the top end cap 15 to properly seal and secure the flexible filter 3 and the frame 5 to the upper and lower end cap 13, 15, as shown in Figure 5. The upper end cap 13 preferably has a collar 21 with an elongated head 23. The upper surface of the elongated head 23 will receive foam packing 25 or something similar that will serve as a sealing package to prevent leakage between the filter 1 and the vacuum housing as illustrated in Figure 6. The lid bottom end 15 has an upwardly extending dome 27 with an opening 29 which facilitates the mounting of filter 1 in the housing of the vacuum cleaner. Figure 5 of the drawings best illustrates the manner in which the different components of the filter 1 are located and secured with one another in the assembled filter 1. The manner in which the fine particle filter for vacuum cleaner 1 of the present invention is associated with an industrial vacuum cleaner for dry or wet surfaces 31 is best illustrated in Figure E >; of the drawings. The industrial vacuum cleaner for dry or wet surfaces 31 includes at its upper end a removable blower 33 in an assembled position. Inside the vacuum cleaner drum 35, the filter 1 of fine particles for vacuum cleaner is assembled. The filter 1 of fine particles for vacuum cleaners depends on the lower surface of the lid 37 in relation surrounding the tapered opening 39 in the lid 37. The filter 1 of fine particles for vacuum cleaner is fitted on a hollow cylindrical cage 41, which surrounds the opening of the tapered wall 39. The lower end cap 15 engages the bottom of the cage 41 through complementary male and female fasteners 43.45 associated with the cage 41. The upper cover 13 has a gasket 25 which teaches the surfaces corresponding to lid 37, to give a sealing relationship between filter 1 of fine particles for vacuum cleaner and cover 37. Filter 1 of fine particles for vacuum cleaner filters waste air sucked into the drum of vacuum cleaner 35 through an entrance door (not shown), which is connected to the vacuum hose (not shown) to deposit the air and debris inside the vacuum cleaner drum 35. At the bottom of the vacuum The solid waste particles will be collected, while the fine particulate filter for vacuum cleaners 1 will filter the suspended debris into the air so that the clean air comes out through the tapered opening 39 of the cover 37 and towards the blower 33 on the which releases the air into the atmosphere. Since the filter 1 of fine particles for vacuum cleaner of the present invention uses high efficiency filter material 3 which is supported on a frame 5 to provide the necessary force to the column when used in a vacuum cleaner, the filter Fine particles for vacuum cleaner 1 is built to achieve, when it works as desired, to stop 99.99% of all particles of a miera or greater. This is an important improvement and perfection with respect to the peripheral pleated paper filters currently used, which, as indicated above, usually only filter particles of ten microns or greater, when the filter has no production defects, which can not be guaranteed. With the fine particulate filter for vacuum cleaner of the present invention, a high efficiency filter is provided for use in industrial vacuum cleaners for dry or wet surfaces. The construction of the new filter is achieved with a simple and economical construction with a minimum number of parts, while stopping 99.99% of all debris and particles of one or more so that they do not fall back into the area being cleaned, when it works as desired In view of the foregoing, it will be seen that the various objects and advantages of the present invention have been achieved and other advantageous results have been obtained. Since several changes can be made in the above constructions without departing from the scope of the invention, it is intended that all the material contained in the above description or shown in the accompanying drawings be interpreted in an illustrative and non-limiting sense.

Claims (20)

NOVELTY OF THE INVENTION CLAIMS

1. - A filter for vacuum cleaners includes a flexible filter of predetermined height that rests vertically to extend in a certain area by means of a frame that gives the filter sufficient strength in the column that is ideal for use in vacuum cleaners.

2. The filter for vacuum cleaner according to claim 1 further characterized in that the flexible filter extends in a circumferential path and the internal daiso frame for the flexible filter within a circumferential path.

3. The filter for vacuum cleaner according to claim 2, further characterized in that the frame also provides lateral support to the flexible filter at the opposite free ends.

4. The filter for vacuum cleaner according to claim 3, further characterized in that the flexible filter and the supporting frame within the circumferential path comprise a series of filters that are adjacent and folds of the frame, the folds in the frame gives the corresponding internal support for the filter folds.

5. The vacuum cleaner filter according to claim 4, further characterized in that the frame that laterally supports the flexible filter at the opposite free ends also supports the frame that holds the flexible filter in the circumferential path.

6. The filter for vacuum cleaner according to claim 5, further characterized in that the frame q? E gives lateral support includes top and bottom end caps that are sealed to the opposite ends free of the filter and the frame within the circumferential path of the filter.

7. The vacuum cleaner filter includes a flexible nonwoven material arranged in a series of folds placed adjacently and extending in a circumferential path and which are supported vertically by a frame.

8. The filter for vacuum cleaner according to claim 7, further characterized in that the nonwoven flexible material is constructed to stop 99.99% of the particles of one or more.

9. The filter for vacuum cleaner according to claim 8, further characterized in that the flexible non-woven material is composed of three layers of non-woven material, blown under melt, spunbonded and in elevation.

10. The filter for vacuum cleaner according to claim 7, further characterized in that the folds of nonwoven flexible material that are adjacently supported on a frame that is in the circumferential path of the folds that are adjacent .

11. The filter for vacuum cleaner according to claim 10, further characterized in that the folds that are adjacent also abut in a frame that is at the opposite ends free of the folds that are adjacent.

12. The filter for vacuum cleaner according to claim 11, further characterized in that the frame within the folds that are in adjacent form gives the internal support corresponding to the folds that are adjacent.

13. The filter for vacuum cleaner according to claim 12, further characterized in that the frame within the folds that are adjacent is an open mesh frame.

14. The filter for vacuum cleaner according to claim 13, further characterized in that the open mesh frame is an aluminum wire frame with an epoxy coating.

15. The filter for vacuum cleaner according to claim 14, further characterized in that the frame at the opposite ends free of the folds placed adjacently includes top and bottom end caps sealed to the folds q? E are adjacent and to the frame within the folds placed adjacently.

16. The vacuum cleaner filter includes a non-woven flexible media material arranged in a series of folds placed adjacently and supported by an open-net folds frame that provide corresponding internal support for the folds placed in an adjacent material of flexible nonwoven media.

17. The filter for vacuum cleaner according to claim 16, further characterized in that it includes endcaps mounted on and sealed to opposite upper and lower ends of the folds placed adjacently of flexible nonwoven edior material and the open mesh pleat frame. 18.- A filter for vacuum cleaner that includes: a circumferential series of folds that are in an adjacent form of flexible non-woven filter material; an open internally expanded folds mesh frame which gives the internal support corresponding to the folds that are in adjacent form of flexible nonwoven filter material; and upper and lower caps sealed to the opposite free ends of the folds that are in adjacent form of filter material of flexible nonwoven media and to the folds of the open mesh frame. 19. The filter for vacuum cleaner according to claim 18, further characterized in that the upper and lower end caps are sealed to the opposite free ends of the filter placed adjacently and to the folds of the frame by means of a foaming adhesive material. 20. The filter for vacuum cleaner according to claim 18, further characterized in that at least one of the end caps has an opening that is surrounded by a packing to prevent leakage between the filter of the vacuum cleaner and the housing of the vacuum cleaner in the one that mounts the filter.