FR2847449A1 - Dust collecting filter for vacuum cleaner, has dust filtering unit mounted in casing to filter dust from air that is drawn through air inflow hole and discharged through air discharging hole - Google Patents

Abstract

The filter has a casing (10) with a side surface vertically extended from an edge of a backside surface to define a predetermined space. A cover (20) connected with the housing has an air inflow hole (21) fluid-communicating with an air inlet. A dust filtering unit mounted in the casing filters the dust from the air that is drawn through the inflow hole and discharged through an air discharging hole (11). The backside surface has the air discharging hole formed inside it to fluid-communicate with an air outlet. An Independent claim is also included for a vacuum cleaner having a dust collecting filter.

Description

The present invention relates to a dust collection filter

  for a vacuum cleaner, and more particularly to a dust collection filter which can be reused after being emptied and washed and to a vacuum cleaner having the dust collection filter. Generally, a vacuum cleaner sucks up dust and various foreign substances (hereinafter referred to as "dust") from a surface to be cleaned with air using a suction force generated at the level of a brush. suction by a vacuum generating device and separates and collects the dust from the aspirated air using a filter. Such a filter generally uses a paper filter (paper bag). The paper filter is a consumable product, which is removed from the vacuum cleaner and thrown away with the dust contained in it when it is full of dust. Therefore, such a disposable paper filter causes the maintenance cost of the vacuum cleaner to be increased. Likewise, since the paper filter provides a condition where bacteria can easily live and spread, it causes a health problem. Likewise, there is a drawback to having to frequently replace the filter in

paper.

  The present invention has been developed in order to solve the above problems of the prior art. It is therefore an object of the present invention to provide a dust collection filter for a vacuum cleaner which can be reused after emptying and washing so as to

be usable.

  Another object of the present invention is to provide a dust collection filter for a vacuum cleaner which is hygienic in that it does not allow the installation of bacteria and is easily mounted in and removed from a dust collection chamber of the vacuum cleaner. Yet another object of the present invention is to provide a vacuum cleaner using the dust collection filter having the characteristics described above, thereby contributing to a reduction in maintenance costs.

and practical use.

  The above objects of the present invention are achieved by providing a dust collection filter for a vacuum cleaner mounted in a dust collection chamber of the vacuum cleaner having an air inlet and an air outlet, in order to filter dust from the air drawn through the air inlet, the dust collection filter comprising a filter housing having a rear surface and a side surface extending vertically from an edge of the rear surface to define thus a predetermined space, the rear surface having an air outlet hole formed therein to be in fluid communication with the air outlet, a cover having an air inlet hole in fluid communication with the air inlet and separably connected to the filter housing, and dust filtering means mounted in the filter housing, in order to filter dust from the air which is sucked through the inlet hole d air and ev acue through the air outlet hole. The collection filter

  dust can be reused after being emptied and washed.

  According to the present invention, since it is not necessary to replace the filter, the cost of replacing the filter can be reduced. Likewise, since the filter is designed to prevent the spread of bacteria, it can keep the environment clean. Likewise, easy separation and mounting of the filter improves the character

  convenient use of the vacuum cleaner.

  Preferably, the filter housing has a cylindrical shape and the filter housing and the cover are detachably connected to each other by a protrusion part and hooks disposed respectively at the level of the filter housing and of the cover and

corresponding to each other.

  It is preferable that the dust filtering means comprise a first dust filtering element intended to filter large dust and a second dust filtering element intended to filter small dust which is not

  filtered by the first dust filtering means.

  The first dust filtering means comprise a frame formed integrally with the rear surface of the filter housing in order to divide an internal space of the filter housing into an external dust collecting part and an internal air outlet part, the frame having a multiplicity of holes which are formed in a radial direction, and a thread body attached to one side of the frame to enclose the holes

of the frame.

  Likewise, the second dust filter element has a first support in contact with the rear surface of the filter housing corresponding to the air outlet portion and having a through hole formed in a center to match the outlet hole air, a second support supported by one end of the frame at an edge, and a small dust filter supported by circumferential ends of the first

and second supports.

  Here it is preferable that the second support is formed with a conical shape which becomes progressively wider from a central point to the other end, thereby allowing air drawn in through the air inlet hole of the cover to flow smoothly into the dust collection part located in the filter housing. Likewise, it is preferable that the small dust filter is made of a non-woven fabric and that the non-woven fabric has a multiplicity of pleated parts.

  in order to increase a dust filtering surface.

  Similarly, it is preferable that the cover be provided with a multiplicity of ribs which protrude from an interior of the cover, the ribs pressing the second support supported by the end of the frame when the

  cover is connected to the filter housing.

  Furthermore, the above objects of the present invention are achieved by providing a vacuum cleaner comprising a vacuum cleaner body having a dust collection chamber provided with an air inlet and an air outlet and connected to a suction brush, a vacuum generating device arranged in a driving chamber, in order to generate a vacuum in the dust collecting chamber, the driving chamber being arranged in a rear part of the collecting collecting chamber dust from the vacuum cleaner body to be in fluid communication with the dust collecting chamber through the air outlet, and a dust collecting filter mounted in the dust collecting chamber for filtering and collecting dust from the air sucked into the dust collection chamber, the dust collection filter being reusable. The dust collection filter includes a filter housing having a rear surface and a side surface extending vertically from an edge of the rear surface to thereby define a predetermined space, the rear surface having an air outlet hole formed therein to be in fluid communication with the air outlet, a cover having an air inlet hole in fluid communication with the air inlet and detachably connected to the filter housing, and dust filtering means mounted in the filter housing, in order to filter dust from the air which is sucked through the air inlet hole so as to be

  exhausted through the air outlet hole.

  The above objects and features of the present invention will become more apparent from the

  description of a preferred embodiment of the

  present invention with reference to the accompanying drawings, in which: Figure 1 is an exploded perspective view showing a dust collection filter for a vacuum cleaner according to a preferred embodiment of the present invention; Figure 2 is a perspective view showing the dust collection filter of Figure 1 in an assembled state; Fig. 3 is a side sectional view showing half of the interior of the dust collection filter for the vacuum cleaner according to the preferred embodiment of the present invention; Fig. 4 is a side sectional view showing the dust collecting filter for the vacuum cleaner performing the dust filtering operation according to the preferred embodiment of the present invention; Figure 5 is a side sectional view showing the dust collection filter mounted in a dust collection chamber of the vacuum cleaner according to the preferred embodiment of the present invention; and Figure 6 is a plan view showing the

  dust collection filter in Figure 5.

  A dust collection filter for a vacuum cleaner according to a preferred embodiment of the present invention will be described in more detail in

referring to the attached drawings.

  As shown in FIGS. 1 to 4, a dust collecting filter 100 for a vacuum cleaner according to a preferred embodiment of the present invention comprises a filter housing 10, a cover 20 and dust filtering means 30. The dust collection filter 100 can be reused even when the dust collection filter 100 is full of dust by separating the cover 20 from the filter housing

  and emptying and washing the filter housing 10.

  That is, the dust collection filter 100 is

  reusable. The following descriptions are made around

  respective elements of the dust collection filters 100. The filter housing 10 is formed with a cylindrical shape having a rear surface 10a and a side surface lob which extends vertically from the edge of the rear surface 10a. Therefore, the filter housing has a predetermined space defined therein. The rear surface 10a is provided with an air outlet hole 11 disposed approximately in the center. The side surface lob is provided with a projection 12 formed at its end in a circumferential direction. A groove 13a is formed inside the projection 12 in order to receive an O-ring 13. The O-ring 13 is intended to maintain the airtightness when the cover 20 is connected to the filter housing 10 The air outlet hole 11 is in fluid communication with an air outlet 221 of a dust collection chamber 210 of a vacuum cleaner body 200 when the dust collection filter 100 is mounted in the dust collection chamber 210 as shown in Figure 5. The reference 230 in Figure 5 indicates a drive chamber in which is mounted a vacuum generating device 300. The dust collection chamber 210 and the chamber drive 230 are separated from each other by a partition 220 and are in fluid communication with each other through the air outlet 221 formed in the partition 220. The reference 211 of the figure 5 indicates a entry ir of the dust collection chamber 210, which is connected to a suction pipe of a suction brush (not shown). The cover 20 is removably connected to the filter housing 10. The cover 20 is provided with an air inlet hole 21 formed approximately in the center and several hooks formed at the edge of the cover 20 in order to hang the protruding part 12 of the filter housing 10. Due to the presence of the protruding part 12 and the hooks 22, the cover 20 can be connected to and separated from the filter housing 10. The air inlet hole 21 is in fluid communication with the air inlet 211 of the dust collection chamber 210 when the dust collection filter 100 is mounted in the dust collection chamber 210 of the vacuum cleaner body 200 as shown in Figure 5. Therefore, when the vacuum generating device 300 is driven, the dust-laden air is drawn into the dust collecting filter 100 from the suction brush through the inlet hole. air 21. Likewise , the cover 20 is provided with several ribs 23 which protrude from the interior thereof, which will be described

later.

  The dust filtering means 30 are mounted in the cover 20, in order to filter the dust coming from the dust-laden air which is sucked through the air inlet hole 21 of the cover 20 and evacuated through the hole outlet air 11 from the filter housing 10. The dust filter means 30 include a first dust filter element 31 for filtering large dust and a second dust filter element 35 for filtering small dust that is not filtered by the first

  dust filter element 31.

  The first dust filtering element 31 comprises a frame 32 and a net body 33. The frame 32 is integrally formed with the rear surface 10a of the filter housing 10 so as to divide an internal space S of the filter housing 10 into a part for collecting external dust Si and an internal air outlet part S2. The frame 32 has several holes 32a formed in a radial direction. The thread body 33 is fixed to one side of the frame 32 in order to enclose the holes 32a of the frame 32. The air flowing through the air inlet hole 21 of the cover 20 is evacuated through the part for collecting dust Si, the thread body 33, the air outlet portion S2, and the air outlet hole 11 of the filter housing 10. At this time, the dust entrained in the air is blocked by the net body 33 and is thus separated from the air and

  collected in the dust collection part Si.

  The second dust filtering element 35 comprises first and second supports 36 and 37 and a small dust filter 38. The first support 36 is in contact with the rear surface 10a of the filter housing 10 corresponding to the outlet portion of air S2 from the filter housing 10, and a passage hole 35a is formed in a central part of the first support 36, corresponding to the air outlet hole 11. The second support 37 is supported on the end of the frame 32 at the level from the edge. The two ends of the small dust filter 38 are supported on the circumferential edges of the first and second supports 36 and 37. Here, the small dust filter 38 can be made of a nonwoven fabric, which preferably has several pleats in order to '' increase a dust filtering surface. Likewise, the second support 37 is formed with a conical shape, that is to say becomes progressively wider from a central point towards the other end, and thus allows a smooth air flow. That is to say, due to the presence of the second conical support 37, the air sucked through the air inlet hole 21 of the cover 20 flows smoothly into the dust collecting part. If disposed inside the filter housing 10. Similarly, when the cover 20 is connected to the filter housing 10, the multiplicity of ribs 23 of the cover 20 presses the second support 37 supported on the end of the frame 32, in thus preventing the second support from being separated from its

installation position.

  Reference 14 indicates an O-ring intended to maintain airtightness between the rear surface 10a of the filter housing 10 and the first support 36. The O-ring is mounted in a groove 14a formed along a part of the rear surface 10a arranged so

adjacent to frame 32.

  The operations of a vacuum cleaner having the dust collection filter according to the present invention constructed as above will be described below in

referring to Figures 5 and 6.

  The dust collection filter 100 as a main part of the present invention is removably mounted in the dust collection chamber 210 of the vacuum cleaner body 200 as shown in Figures 5 and 6. The air inlet 21 of the dust collection filter 100 is in fluid communication with the air inlet 211 of the dust collection chamber 210, and the air outlet hole 11 of the dust collection filter 100 is in fluid communication with the air outlet 221 of the collection chamber

dust 210.

  When the vacuum generating device 300 of the driving chamber 230 is driven for the cleaning operation, a vacuum appears in the dust collecting chamber 210. Therefore, due to the strong suction, the charged air dust is sucked from the cleaning surface into the dust collection chamber 210 through the suction brush

(not shown).

  The sucked air flows into the dust collection filter 100 through the air inlet 211 of the dust collection chamber 210 and the air inlet hole 21 of the dust collection filter 100. The air is then guided towards the dust collecting part S1 of the filter housing 10 by the second support 37 of the second dust filtering element 35, and is evacuated towards the outside through the thread body 33 of the first element. filter 31, the small dust filter 38 of the second dust filter 35, the air outlet portion S2, the air outlet hole 11 of the dust collection filter 100, the outlet air 221 from dust collection chamber 210, and the chamber

drive 230.

  11 At this stage, because the large dust entering the air is blocked by the thread body 33 of the first dust filter element 31, it is separated from the air and collected in the first filter element of dust 31. The small dust which is not filtered by the first dust filtering element 31 is filtered a second time by the small dust filter 38 of the second dust filtering element 35. The cleaned air is exhausted to outside through

  outlet passages described above.

  Likewise, when the dust collecting part Si of the filter housing 10 is full of the separated dust, the dust collecting filter 100 is removed from the dust collecting chamber 210 of the vacuum cleaner body 200, the cover 20 is separated from the filter housing 10 and the filter housing 10 is then emptied. Simultaneously, the second dust filter element 35 is also emptied. Then, after having been washed and reassembled, the dust collection filter 100 is reassembled in the dust collection chamber 210 of the

  200 vacuum cleaner body for new use.

  According to the present invention as described above, since the dust collection filter 100 intended to filter the dust from the aspirated air can be reused, the cost for replacing the paper filter is reduced. The maintenance cost of the vacuum cleaner can

therefore be reduced.

  Also, according to the present invention, since the dust collection filter 100 is designed to prevent the spread of bacteria, it can maintain the cleanliness of the environment. Likewise, easy separation and mounting of the dust collection filter 100 improves

  the practicality of using the vacuum cleaner.

  That is, the present invention provides the vacuum cleaner which is hygienic and contributes to reducing the cost of maintenance and improving the convenience of use. Therefore, an extremely satisfactory vacuum cleaner that meets the needs of the

consumer can be expected.

  Although a preferred embodiment of the present invention has been shown and described, it should be noted by those skilled in the art that changes can be made to this embodiment without departing

  principles and spirit of the invention.

Claims (16)

  1. Dust collection filter (100) for a vacuum cleaner mounted in a dust collection chamber (210) of the vacuum cleaner having an air inlet (211) and an air outlet (221), in order to filter dust from the air sucked in through the air inlet (211), the dust collection filter (100) being reusable, the dust collection filter (100) being characterized in that it comprises: a filter housing (10) having a rear surface (lOa) and a side surface (lOb) extending vertically from an edge of the rear surface (lOa) to thereby define a predetermined space, the rear surface (lOa) having an air outlet hole (11) formed therein to be in fluid communication with the air outlet (221), a cover (20) having an air inlet hole (21) in communication with fluid with the air inlet (211) and separably connected to the filter housing (10), and dust filtering means (30) mounted in ns the filter housing (10), in order to filter dust from the air which is sucked through the air inlet hole (21) and exhausted through the outlet hole air (11).   2. Dust collection filter (100) for a vacuum cleaner according to claim 1, characterized in that the filter housing (10) has a cylindrical shape and the filter housing (10) and the cover (20) are connected removably to each other by a projection part (12) and hooks (22) disposed respectively at the level of the filter housing (10) and the cover (20) and corresponding to each other.   3. dust collecting filter (100) for a vacuum cleaner according to claim 1, characterized in that the dust filtering means (30) comprise: a first dust filtering element (31) intended to filter dust from large size, and a second dust filtering element (35) for filtering small dust which is not filtered by the first dust filtering means (35). 4. dust collection filter (100) for a vacuum cleaner according to claim 3, characterized in that the first dust filtering means (30) comprise: a frame (32) formed integrally with the rear surface (10a) of the housing filter (10) to divide an internal space (S) of the filter housing (10) into an external dust collection part (S1) and an internal air outlet part (S2), the frame (32) having a multiplicity of holes (32a) which are formed in a radial direction, and a thread body (33) attached to one side of the frame   (32) in order to enclose the holes (32a) of the frame (32).   5. Dust collection filter (100) for a vacuum cleaner according to claim 4, characterized in that the second dust filter element (35) has a first support (36) in contact with the rear surface (lOa) of the housing filter (10) corresponding to the air outlet portion (S2) and having a through hole (36a) formed in a center to match the air outlet hole (11), a second support (37) supported by one end of the frame (32) at an edge, and a small dust filter (38) supported by circumferential ends of the first and second supports (36, 37).   6. Dust collection filter (100) for a vacuum cleaner according to claim 5, characterized in that the second support (37) is formed with a conical shape which becomes progressively wider from a central point towards the other end, in thus allowing air sucked through the air inlet hole (21) of the cover (20) to flow smoothly into the dust collecting part (Si) disposed in the housing filter (10).   7. Dust collection filter (100) for a vacuum cleaner according to claim 5, characterized in that the small dust filter (38) is made of a non-woven fabric and the non-woven fabric has a multiplicity of pleated parts in order to '' increase an area of dust filtering.   8. Dust collection filter (100) for a vacuum cleaner according to claim 5, characterized in that the cover (20) is provided with a multiplicity of ribs (23) which protrude from an interior of the cover (20), the ribs (23) pressing the second support (37) supported by the end of the frame (32) when the cover (20) is connected to the filter housing (10).   9. Vacuum cleaner characterized in that it comprises a vacuum cleaner body (200) having a dust collection chamber (210) provided with an air inlet (211) and an air outlet (221) and connected to a suction brush, a vacuum generating device (300) disposed in a driving chamber (230), in order to generate a vacuum in the dust collecting chamber (210), the driving chamber (230) being disposed in a rear portion of the dust collection chamber (210) of the vacuum cleaner body (200) so as to be in fluid communication with the dust collection chamber (210) through the outlet d air (221), and a dust collection filter (100) mounted in the dust collection chamber (210), to filter and collect dust from the air drawn into the dust collection chamber (210 ), the dust collection filter (100) being reusable, the dust collection filter (100) comprising, a filter housing (10) having a rear surface (10a) and a side surface (lob) extending vertically from an edge of the rear surface (iQa) to thereby define a predetermined space, the rear surface (loa ) having an air outlet hole (11) formed therein to be in fluid communication with the air outlet (221), a cover (20) having an air inlet hole (21) in fluid communication with the air inlet (211) and separably connected to the filter housing (10), and dust filtering means (30) mounted in the filter housing (10), in order to filter from dust from the air which is drawn in through the air inlet hole (21) and exhausted through the outlet hole air (11).   10. Vacuum cleaner according to claim 9, characterized in that the filter housing (10) has a cylindrical shape and the filter housing (10) and the cover (20) are detachably connected to each other by a projection part (12) and hooks (22) arranged respectively at the filter housing (10) and the   cover (20) and corresponding to each other.   11. Vacuum cleaner according to claim 9, characterized in that the dust filtering means (30) comprise: a first dust filtering element (31) intended to filter large dust, and a second filtering element dust (35) for filtering small dust which is not filtered by the first dust filtering means (31).   12. Vacuum cleaner according to claim 11, characterized in that the first dust filtering means (30) comprise: a frame (32) formed integrally with the rear surface (10a) of the filter housing (10) in order to divide a space internal (S) of the filter housing (10) into an external dust collecting part (Sl) and an internal air outlet part (S2), the frame (32) having a plurality of holes (32a) which are formed in a radial direction, and a net body (33) attached to one side of the frame   (32) in order to enclose the holes (32a) of the frame (32).   13. Vacuum cleaner according to claim 12, characterized in that the second dust filtering element (35) comprises: a first support (36) in contact with the rear surface (10a) of the filter housing (10) corresponding to the part air outlet (221) and having a through hole (36a) formed in a center and corresponding to the air outlet hole (11), a second support (37) supported by one end of the frame (32) at the level of an edge, and a small dust filter (38) supported by circumferential ends of the first and second supports (36, 37).   14. Vacuum cleaner according to claim 13, characterized in that the second support (37) is formed with a conical shape which becomes progressively wider from a central point towards the other end, thus allowing air sucked through the air inlet hole (21) of the cover (20) to flow smoothly into the dust collecting part (Si) disposed in the housing filter (10).   15. Vacuum cleaner according to claim 13, characterized in that the small dust filter (38) is produced in a non-woven fabric and the non-woven fabric has a multiplicity of pleated parts in order to increase a dust filtering surface.   16. Vacuum cleaner according to claim 13, characterized in that the cover (20) is provided with a multiplicity of ribs (23) which protrude from an interior of the cover (20), the ribs (23) pressing the second support ( 37) supported by the end of the frame (32) when the cover   (20) is connected to the filter housing (10).