EP2561786A1 - Vacuum cleaner - Google Patents
Vacuum cleaner Download PDFInfo
- Publication number
- EP2561786A1 EP2561786A1 EP12187314A EP12187314A EP2561786A1 EP 2561786 A1 EP2561786 A1 EP 2561786A1 EP 12187314 A EP12187314 A EP 12187314A EP 12187314 A EP12187314 A EP 12187314A EP 2561786 A1 EP2561786 A1 EP 2561786A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- dust
- unit
- air
- air passage
- separating unit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
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Classifications
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L9/00—Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
- A47L9/20—Means for cleaning filters
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L9/00—Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
- A47L9/10—Filters; Dust separators; Dust removal; Automatic exchange of filters
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L9/00—Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
- A47L9/10—Filters; Dust separators; Dust removal; Automatic exchange of filters
- A47L9/16—Arrangement or disposition of cyclones or other devices with centrifugal action
Definitions
- the present invention relates to a vacuum cleaner, and more particularly, to a vacuum cleaner that prevents dust dropped off from a collecting unit, such as a filter, for collecting dust, from re-adhering to this collecting unit.
- a collecting unit such as a filter
- a vacuum cleaner including a cleaner body provided with a dust collecting container chamber formed therein, a dust collection container detachably mounted to the dust collecting container chamber, an electric blower provided on the downstream side of the dust collecting container chamber, a secondary filter, such as a pleat filter, detachably mounted to a rear port of the dust collecting container, for collecting dust, and a dust removal unit for dropping off dust adhering to the pleat filter (refer to Japanese Unexamined Patent Application Publication No. 2004-358135 ).
- This dust removal unit includes a ring rotatably provided at a position opposite to the pleat filter, and a projection provided to a ring so as to abut against the pleat filter.
- a vacuum cleaner includes: an electric blower that sucks dust through a suction connecting port; a dust separating unit for separating the dust and air sucked into the suction connecting port from each other to thereby collect the dust; a collecting unit for collecting the dust passing through the dust separating unit, the collecting unit being provided separately from the dust separating unit; a dust removal unit for dropping off the dust collected by the collecting unit; and a return mechanism for returning the dust dropped off from the collecting unit by the dust removal unit toward an upstream side of the dust separating unit, the dust returned by the return mechanism being collected by the dust separating unit.
- the dust dropped off from the collecting unit such as a secondary filter is returned to and collected by the dust separating unit, it is possible to prevent the dropped-off dust from re-adhering to the collecting unit.
- FIG. 1 shows a vacuum cleaner according to a first embodiment of the present invention.
- a vacuum cleaner 10 in the first embodiment includes: a cleaner body 11; a dust collecting hose 12 having one end detachably connected to a connection port 11a of the cleaner body 11 and the other end provided with a hand operating tube 13; an extension tube 14 detachably connected to the hand operating tube 13; and a suction port body 15 detachably connected to the front end of the extension tube 14.
- the hand operation tube 13 has an operating portion 13A, which includes a drive/stop changeover switch 13a for switching between the drive and the stop of the electric blower 24, and a strong/weak changeover switch 13b for controlling the power of the electric blower 24, described below.
- the cleaner body 11 has a body case 20, which incorporates a dust collecting unit 50 and the electric blower 24 (refer to Fig. 2 ). These dust collecting unit 50 and electric blower 24 will be described hereinlater.
- the suction port body 15 includes a dust suction port, not shown, opened in the bottom surface of the suction port body 15 so as to suck dust lying on a floor or the like, and a suction chamber (not shown) communicating with the dust suction port.
- the suction chamber communicates with a suction connecting port 57a of the dust collecting unit 50 (refer to Fig. 3 ) provided within the cleaner body 11, via the extension tube 14, the dust collecting hose 12, and the connection port 11a.
- a shutter 600 is provided within the connection port 11a of the cleaner body 11, as shown in Fig. 2 .
- the shutter 600 is configured to block or open the connection port 11a.
- a dust collecting unit chamber 22 is provided inside a front portion of the body case 20.
- the dust collecting unit 50 is located in the dust collecting unit chamber 22.
- the electric blower 24 is located inside a rear portion of the body case 20 (i.e., on the left side in Fig. 2 ).
- a large-diameter connection air passage portion 25 having a front opening 25B is provided in front of the electric blower 24, a large-diameter connection air passage portion 25 having a front opening 25B is provided.
- a connection opening 25b is formed in a rear wall 25A of the connection air passage portion 25, which is connected with an air passage tube 500 having a small-diameter.
- the air passage tube 500 communicates with a suction opening 24A of the electric blower 24.
- the air passage tube 500 incorporates a first blocking unit, which is constituted of, for example, a shutter 501. By the opening/closing of the shutter 501, the suction opening 24A of the electric blower 24 and the inside of the connection air passage portion 25 takes a communication state or a non-communication state.
- the air passage tube 500 connects with one end of the detour air passage tube 502, to thereby communicate with the detour air passage tube 502.
- the dust collecting unit 50 includes a dust separation unit 400 and a dust collecting container 410.
- the dust separation unit 400 includes a dust separation portion 52 capable of separating the dust and air and collecting thedust, and a collecting unit for collecting dust that has passed through the dust separation portion 52.
- the collecting unit is composed of, for example, a filter unit 80 and a lid case 21A provided on the filter unit 80.
- the dust separation portion 52 is configured to swirl air containing dust and separates the dust and the air by virtue of inertia force. Details of these dust separation portion 52 and filter unit 80 will be described later.
- the dust collecting container 410 is composed of a transparent dust collecting portion 70 made of a resin and a lid case 21B provided on the dust collecting portion 70.
- the dust separation portion 52 includes a separating chamber 54 cylindrically formed by an outer peripheral wall 53, a substantially conical first dust separating unit 55 provided in the separating chamber 54 along the axis line thereof, a suction air passage portion 56 provided outside a right side wall 54A of the separating chamber 54, and a guide air passage tube 57 for guiding air to the separating chamber 54 from the suction connecting port 57a through which the dust is sucked.
- the suction connecting port 57a communicates with the connection port 11a of the cleaner body 11 via the shutter 600.
- an introducing opening 53A for introducing the dust separated from the air to the dust collecting portion 70.
- a circular opening 154A and a fan-shaped opening 154B are provided in the right side wall 54A of the separating chamber 54.
- a net filter NF2 (not shown) is mounted to the opening 154A, and to the opening 154B, a net filter NF2 (not shown) is mounted in the right side wall 54A.
- a connection opening 54Aa to which a guide air passage tube 57 is connected.
- the first dust separating unit 55 is composed of a plurality of frames 55a and a net filter NF1 bonded to the periphery of the frames 55a.
- the suction air passage portion 56 communicates with the separating chamber 54 via the opening 154A in the right side wall 54A and the net filter NF1 (refer to Fig. 5 ), and also communicates with the separating chamber 54 via the net filter NF2 (not shown) of the opening 154B in the right side wall 54A.
- the suction air passage portion 56 communicates with the inside of an accommodating case 81 of the filter unit 80 and also communicates with a dust collecting chamber 73 (described later) of a dust collecting case portion 74 via a connection opening 56A formed in a right side wall portion 156 (refer to Fig. 5 ) of the suction air passage portion 56.
- the bottom of the suction air passage portion 56 is connected with the other end of the detour air passage tube 502, and the suction air passage portion 56 and the air passage tube 500 of the cleaner body 11 communicate with each other via the detour air passage tube 502.
- a third blocking unit which is constituted of, for example, a solenoid valve 503. This solenoid valve 503 serves to block or open the detour air passage tube 502.
- the dust collecting portion 70 includes a communication case portion 72 having a communicating passage 71 which laterally extends in an upper portion thereof and a dust collecting case portion 74 having the dust collecting chamber portion 73 which extends downward from the right end of the communication case portion 72 so as to collect the dust.
- connection opening 75 is provided in a left side wall portion 74A of the dust collecting case portion 74, and a net filter NF3 is mounted to the connection opening 75.
- a cover plate 170 is mounted on the outer wall portion of the dust collecting case portion 74 to a position located outside the net filter NF3 and apart from the net filter NF3 by a predetermined distance, a.
- An opening 170A is provided in a lower portion of the cover plate 170.
- the opening 170A of the cover plate 170 is connected to the connection opening 56A of the suction air passage portion 56.
- the introduction opening 53A of the dust separation portion 52 is connected to the opening 72A of the dust collecting container 410, and the opening 170A in the cover plate 170 of the dust collecting container 410 is connected to the connection opening 56A of the suction air passage portion 56 in the dust separation unit 400.
- the filter unit 80 is opened in the rear surface, and includes a cylindrical accommodating case 81 and a pleat filter portion 100 mounted therein.
- a front wall portion 84 of the accommodating case 81 On the front surface of a front wall portion 84 of the accommodating case 81, the dust separation portion 52 is integrally mounted.
- the pleat filter portion 100 has a pleat filter 104 having a plurality of mountain portions extending radially.
- the front wall portion 84 (refer to Fig. 2 ) of the accommodating case 81 has a connection opening 84A (shown in Fig. 6 ), which is connected to the suction air passage portion 56 (refer to Fig. 5 ).
- the inside of the accommodating case 81 and the suction air passage portion 56 are communicated with each other via the connection opening 84A.
- the connection opening 84A has a second blocking unit, which is constituted of, for example, a shutter 700. The shutter 700 is operative to block or open the connection opening 84A.
- the accommodating case 81 has thereinside a return mechanism for returning air in the accommodating case 81 to the dust separation portion 52.
- This return mechanism is constituted of, for example, a return air passage 640 constituting an air passage.
- One end of the return mechanism is connected to a lower portion of the front wall portion 84 of the accommodating case 81, while the other end thereof is connected to the guide air passage tube 57 of the dust separation portion 52.
- a solenoid valve 641 which is operative to block or open the return air passage 640.
- An external-air introducing air passage 650 (refer to Fig. 2 ) for introducing external air into the accommodating case 81 is formed at an upper portion of the accommodating case 81.
- the external-air introducing air passage 650 includes, for example, a solenoid valve 651, which serves to to block or open the external-air introducing air passage 650.
- a dust removal unit for removing dust from the pleat filter portion 100 is disposed inside the accommodating case 81.
- the dust removal unit is located between the pleat filter portion 100 and the front wall portion 84 of the accommodating case 81 and constitutes a rotating fan 800 that pivots on a central axis 101A of the pleat filter portion 100.
- the rotating fan 800 is configured to be rotated, for example, by external air introduced from the external-air introducing air passage 650.
- a frame 801 of the rotating fan 800 has at least one protrusion 802 in contact with one of the mountain portions of the pleat filter 104.
- the protrusion 802 gets over the mountain portions of the pleat filter 104, and accordingly, it is possible to provide vibrations to the pleat filter 104 to thereby shake off dust adhering to the pleat filter 104.
- the orientation of the blades 803 of the rotating fan 800 is set so as to receive the external air introduced from the external-air introducing air passage 650 to thereby flow the external air toward the pleat filter portion 100.
- the dust removal unit is configured to remove the dust from the pleat filter by means of the rotating fan 800 that is rotated by the external air introduced from the external-air introducing air passage 650.
- the present invention is, however, not limited to this way of removing the dust.
- the dust may be removed by rotating the pleat filter portion 100 by a motor (not shown) or the like, and the dust is dropped off from the pleat filter portion 100, for example, by bringing a fixed leaf spring (not shown) into contact with the mountain portions and causing the leaf spring to pick these mountain portions.
- a motor not shown
- the dust is dropped off from the pleat filter portion 100, for example, by bringing a fixed leaf spring (not shown) into contact with the mountain portions and causing the leaf spring to pick these mountain portions.
- the more smooth air flow from the external-air introducing air passage into the filter unit may be achieved.
- the control of the closing/opening operations of the shutters 501, 600, and 700, or the solenoid valves 503, 641, and 651 is performed by a control unit, which is not shown in the figure.
- the dust collecting unit 50 is mounted to the dust collecting unit chamber 22 of the cleaner body 11, and the dust collecting hose 12 is connected to the connection port 11a of the cleaner body 11, and the suction port body 15 is also connected to the hand operation tube 13 via the extension tube 14 as sown in Fig. 1 .
- the shutters 501, 600 and 700 are each in an opened state, and the solenoid valves 503, 641 and 651 are each in a closed state.
- the electric blower 24 Upon operating the switch 13b of the operation portion 13A, the electric blower 24 is driven. When this electric blower 24 is driven, air is sucked from the suction opening 24A of the electric blower 24. As a result, a negative pressure operates on the inside of the accommodating case 81 of the dust collecting unit 50 via the air passage tube 500 and the connection air passage portion 25, and further operates on the inside of the dust collecting case portion 74 or the separating chamber portion 54 of the dust separation portion 52 via the suction air passage portion 56. This negative pressure acts to the dust collecting hose 12, the extension tube 14 and the suction port body 15 via the guide air passage tube 57 to thereby suck the dust through the suction port body 15 together with air.
- the thus sucked dust and air are guided into the suction connecting port 57a of the dust collecting unit 50 via the extension tube 14 and the dust collecting hose 12.
- the dust and the air that have been sucked into the suction connecting port 57a are introduced into the separating chamber 54 of the dust separation portion 52 through the guide air passage tube 57, and the dust and air are then counterclockwisely rotated in the separating chamber 54 as shown in Fig. 4 .
- the dust and the air are separated from each other by inertias, and the air is sucked into the accommodating case 81 of the filter unit 80, through the net filter NF1 (refer to Fig. 5 ) of the first dust separating unit 55 or the net filter NF2 (not shown) of the opening 154B and further through the suction air passage portion 56.
- the separated dust is introduced into the communication case portion 72 in the dust collecting portion 70 of the introducing opening 53A in the separating chamber 54 by an inertia force, together with a part of air. These introduced dust and air are sucked into the dust collecting chamber 73 through the communicating passage 71. in the communication case portion 72, and the dust is collected into the dust collecting chamber 73.
- the air that sucked into the dust collecting chamber 73 is then sucked into the suction air passage portion 56 through the net filter NF3 and the opening 170A located below the cover plate 170, and further sucked into the accommodating case 81 of the filter unit 80.
- the air sucked into the accommodating case 81 is then sucked into the connection air passage portion 25 of the cleaner body 11 through the pleat filter 104 of the pleat filter portion 100, and further sucked into the suction opening 24A of the electric blower 24.
- the air sucked into the suction opening 24A of the electric blower 24 is then exhausted from an exhaust port 20H of the cleaner body 11 shown in Fig. 2 , through the inside of the electric blower 24. That is, the air flows as indicated by a chain line with arrows in Fig. 8 .
- the shutters 501, 600 and 700 are closed and the solenoid valves 503, 641 and 651 are opened.
- the electric blower 24 is driven at a predetermined power for a predetermined time period.
- the external air is introduced from the external-air introducing air passage 650 into the accommodating case 81 (refer to Fig. 2 ) of the dust collecting unit 50 as shown in Fig. 8 .
- the rotating fan 800 is rotated, and the vibration is caused to the pleat filter 104 by the location of the protrusion, thereby dropping off dust adhering to the pleat filter 104.
- the external air introduced into the accommodating case 81 is sucked into the upstream side of the dust separating portion 55, that is, into the guide air passage tube 57 (refer to Fig. 2 ) of the dust collecting unit 50 through the return air passage 640, and further sucked into the separating chamber 54 of the dust collecting unit 50 shown in Fig. 5 .
- the dust dropped off from the pleat filter 104 passes through the return air passage 640, moves with the flow of the external air, and is carried into the separating chamber 54 of the dust collecting unit 50.
- the dust is separated from the external air in the separating chamber 54 and carried into the dust collecting chamber 73, while the external air is sucked into the suction air passage portion 56 through the net filter NF1 (refer to Fig. 5 ) of the first dust separating unit 55, or the net filter NF2 (not shown) of the opening 154B.
- the external air introduced into the suction air passage portion 56 is sucked into the downstream side portion of the shutter 501, i.e., the air passage tube 500 shown in Fig. 2 through the detour air passage tube 502 and further sucked into the suction opening 24A of the electric blower 24. Then, the drive of the electric blower 24 is stopped after a predetermined time period.
- the dust dropped off from the pleat filter 104 is carried into the separating chamber 54 of the dust collecting unit 50. Therefore, when the electric blower 24 is driven for performing cleaning, the dust that has been dropped off from the pleat filter 104 is prevented from being sucked up and re-adhering to the pleat filter 104.
- Figs. 9 and 10 show a vacuum cleaner according to a second embodiment of the present invention.
- the air passage tube 500 and the inside of the accommodating case 81 are communicated through the detour air passage 900 constituting a detour passage, and the detour air passage tube 900 has a third dust separating unit.
- the third dust separating unit includes, for example, a filter 901 and a solenoid valve 902.
- the shutters 501 and 700 are opened and the solenoid valve 902 is closed, air flows as indicated by a chain line with arrows in Fig. 10 , and dust is collected into the dust collecting chamber portion 73 as in the case of the first embodiment.
- the dust dropped off from the pleat filter 104 passes through the detour air passage 900 and moves with the flow of the external air, as in the case of the first embodiment. Because the detour air passage tube 900 has a filter 901, the dust is caught by the filter 901, and only the air is sucked into the air passage tube 500.
- the dust dropped off from the pleat filter 104 is carried into the detour air passage tube 900 and caught by the filter 901. Therefore, when the electric blower 24 is driven for performing cleaning, the dust that has been dropped off the pleat filter 104 is prevented from being sucked up and re-adhering to the pleat filter 104.
- the shutter 600 it is not necessary to locate the return air passage 640 or the solenoid valve 641.
- the present invention is not limited to the above-described first and second embodiments, and a vacuum cleaner of a type using a paper pack filter may be utilized instead of the dust separation portion 52 and the dust collecting portion 70.
- the present invention has been applied to a vacuum cleaner, the present invention is not restricted thereto.
- the present invention is also applicable to an air-conditioning system and the like in such a way as to drop off dust from a filter in the air-conditioning system and the like.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Filters For Electric Vacuum Cleaners (AREA)
Abstract
A vacuum cleaner (10) includes an electric blower (24) that sucks dust through a suction connecting port, a first dust separating unit (55) for separating the dust and air sucked into the suction connecting port from each other, and a pleat filter (104) for separating the dust and air passing through the first dust separating unit (55). The vacuum cleaner (10) further includes an external-air introducing air passage (650) for introducing external air toward an upstream side of the pleat filter (104), a rotational fan (800) for dropping off dust adhering to the pleat filter (104) by the introduced external air, and a return air passage (640) for returning the dust dropped off from the rotating fan (800) toward the upstream side of the first dust separating unit (55) by the introduced external air.
Description
- The present invention relates to a vacuum cleaner, and more particularly, to a vacuum cleaner that prevents dust dropped off from a collecting unit, such as a filter, for collecting dust, from re-adhering to this collecting unit.
- There has hitherto been known a vacuum cleaner including a cleaner body provided with a dust collecting container chamber formed therein, a dust collection container detachably mounted to the dust collecting container chamber, an electric blower provided on the downstream side of the dust collecting container chamber, a secondary filter, such as a pleat filter, detachably mounted to a rear port of the dust collecting container, for collecting dust, and a dust removal unit for dropping off dust adhering to the pleat filter (refer to Japanese Unexamined Patent Application Publication No.
2004-358135 - This dust removal unit includes a ring rotatably provided at a position opposite to the pleat filter, and a projection provided to a ring so as to abut against the pleat filter.
- In this conventional vacuum cleaner, when a cord reel is rewinding a power cord, the ring is rotated, and under the rotation of the ring, the protrusion moves getting over mountain portions of pleats of the pleat filter, to thereby give vibration to the pleat filter so as to drop dust adhering to the pleat filter.
- However, in such a vacuum cleaner, a problem was posed such that dust dropped off from the pleat filter adheres again to the pleat filter when the electric blower is driven.
- Accordingly, it is an object of the present invention to provide a vacuum cleaner that prevents dust dropped off from a collecting unit, such as a secondary filter, for collecting dust, from re-adhering to the secondary filter.
- To achieve the above-described object, a vacuum cleaner according to one embodiment of the present invention includes: an electric blower that sucks dust through a suction connecting port; a dust separating unit for separating the dust and air sucked into the suction connecting port from each other to thereby collect the dust; a collecting unit for collecting the dust passing through the dust separating unit, the collecting unit being provided separately from the dust separating unit; a dust removal unit for dropping off the dust collected by the collecting unit; and a return mechanism for returning the dust dropped off from the collecting unit by the dust removal unit toward an upstream side of the dust separating unit, the dust returned by the return mechanism being collected by the dust separating unit.
- According to the present invention, since the dust dropped off from the collecting unit such as a secondary filter is returned to and collected by the dust separating unit, it is possible to prevent the dropped-off dust from re-adhering to the collecting unit.
-
- [
Fig. 1 ] a perspective view showing an appearance of a vacuum cleaner according to a first embodiment of the present invention. - [
Fig. 2 ] a longitudinal sectional view showing a structure of a cleaner body shown inFig. 1 . - [
Fig. 3 ] a perspective view showing a dust collecting unit of the vacuum cleaner. - [
Fig. 4 ] a perspective view showing a main part of the dust collecting unit. - [
Fig. 5 ] a cross-sectional view showing a structure of the dust collecting unit shown inFig. 4 . - [
Fig. 6 ] a perspective view of the dust collecting unit (inFig. 3 ), as viewed from a different direction. - [
Fig. 7 ] a diagram showing an orientation of blades of a rotating fan of a dust removal unit in the vacuum cleaner. - [
Fig. 8 ] a conceptual diagram showing air passages in the cleaner body shown inFig. 1 . - [
Fig. 9 ] a longitudinal sectional view showing a structure of the cleaner body according to a second embodiment of the present invention. - [
Fig. 10 ] a conceptual diagram showing air passages in the cleaner body according to the second embodiment of the present invention. Reference Numeral- 24 ---
- electric blower
- 27a ---
- suction connecting port
- 52 ---
- dust separation portion
- 55 ---
- first dust separation unit
- 104 ---
- pleat filter
- 640 ---
- return air passage
- 650 ---
- outside air introduction passage
- 800 ---
- rotating fan
- Hereunder, embodiments of a vacuum cleaner according to the present invention will be specifically described with reference to the accompanying drawings.
-
Fig. 1 shows a vacuum cleaner according to a first embodiment of the present invention. Avacuum cleaner 10 in the first embodiment includes: acleaner body 11; adust collecting hose 12 having one end detachably connected to aconnection port 11a of thecleaner body 11 and the other end provided with ahand operating tube 13; anextension tube 14 detachably connected to thehand operating tube 13; and asuction port body 15 detachably connected to the front end of theextension tube 14. Thehand operation tube 13 has anoperating portion 13A, which includes a drive/stop changeover switch 13a for switching between the drive and the stop of theelectric blower 24, and a strong/weak changeover switch 13b for controlling the power of theelectric blower 24, described below. Thecleaner body 11 has abody case 20, which incorporates adust collecting unit 50 and the electric blower 24 (refer toFig. 2 ). Thesedust collecting unit 50 andelectric blower 24 will be described hereinlater. - The
suction port body 15 includes a dust suction port, not shown, opened in the bottom surface of thesuction port body 15 so as to suck dust lying on a floor or the like, and a suction chamber (not shown) communicating with the dust suction port. The suction chamber communicates with asuction connecting port 57a of the dust collecting unit 50 (refer toFig. 3 ) provided within thecleaner body 11, via theextension tube 14, thedust collecting hose 12, and theconnection port 11a. - A
shutter 600 is provided within theconnection port 11a of thecleaner body 11, as shown inFig. 2 . Theshutter 600 is configured to block or open theconnection port 11a. - As shown in
Fig. 2 , a dust collecting unit chamber 22 is provided inside a front portion of thebody case 20. Thedust collecting unit 50 is located in the dust collecting unit chamber 22. - The
electric blower 24 is located inside a rear portion of the body case 20 (i.e., on the left side inFig. 2 ). In front of theelectric blower 24, a large-diameter connectionair passage portion 25 having a front opening 25B is provided. In arear wall 25A of the connectionair passage portion 25, there is formed a connection opening 25b, which is connected with anair passage tube 500 having a small-diameter. Theair passage tube 500 communicates with a suction opening 24A of theelectric blower 24. Theair passage tube 500 incorporates a first blocking unit, which is constituted of, for example, ashutter 501. By the opening/closing of theshutter 501, the suction opening 24A of theelectric blower 24 and the inside of the connectionair passage portion 25 takes a communication state or a non-communication state. - Between the
shutter 501 and the suction opening 24A, theair passage tube 500 connects with one end of the detourair passage tube 502, to thereby communicate with the detourair passage tube 502. - As shown in
Figs. 3 to 6 , thedust collecting unit 50 includes adust separation unit 400 and adust collecting container 410. - The
dust separation unit 400 includes adust separation portion 52 capable of separating the dust and air and collecting thedust, and a collecting unit for collecting dust that has passed through thedust separation portion 52. The collecting unit is composed of, for example, afilter unit 80 and alid case 21A provided on thefilter unit 80. Thedust separation portion 52 is configured to swirl air containing dust and separates the dust and the air by virtue of inertia force. Details of thesedust separation portion 52 andfilter unit 80 will be described later. - The
dust collecting container 410 is composed of a transparentdust collecting portion 70 made of a resin and alid case 21B provided on thedust collecting portion 70. - As shown in
Fig. 4 , thedust separation portion 52 includes a separatingchamber 54 cylindrically formed by an outerperipheral wall 53, a substantially conical firstdust separating unit 55 provided in the separatingchamber 54 along the axis line thereof, a suctionair passage portion 56 provided outside aright side wall 54A of the separatingchamber 54, and a guideair passage tube 57 for guiding air to the separatingchamber 54 from thesuction connecting port 57a through which the dust is sucked. - As shown in
Fig. 2 , thesuction connecting port 57a communicates with theconnection port 11a of thecleaner body 11 via theshutter 600. - As shown in
Fig. 5 , in an upper portion of the outerperipheral wall 53 of the separatingchamber 54, there is provided an introducingopening 53A for introducing the dust separated from the air to thedust collecting portion 70. - Further, in the
right side wall 54A of the separatingchamber 54, as shown inFig. 4 , acircular opening 154A and a fan-shapedopening 154B are provided. To theopening 154A, the firstdust separating unit 55 is mounted, and to theopening 154B, a net filter NF2 (not shown) is mounted. In theright side wall 54A, there is provided a connection opening 54Aa, to which a guideair passage tube 57 is connected. Thus, the separatingchamber 54 and the guideair passage tube 57 are communicated with each other. - The first
dust separating unit 55 is composed of a plurality offrames 55a and a net filter NF1 bonded to the periphery of theframes 55a. The suctionair passage portion 56 communicates with the separatingchamber 54 via theopening 154A in theright side wall 54A and the net filter NF1 (refer toFig. 5 ), and also communicates with the separatingchamber 54 via the net filter NF2 (not shown) of theopening 154B in theright side wall 54A. - The suction
air passage portion 56 communicates with the inside of anaccommodating case 81 of thefilter unit 80 and also communicates with a dust collecting chamber 73 (described later) of a dustcollecting case portion 74 via aconnection opening 56A formed in a right side wall portion 156 (refer toFig. 5 ) of the suctionair passage portion 56. - The bottom of the suction
air passage portion 56 is connected with the other end of the detourair passage tube 502, and the suctionair passage portion 56 and theair passage tube 500 of thecleaner body 11 communicate with each other via the detourair passage tube 502. On the other end side of the detourair passage tube 502, there is provided a third blocking unit, which is constituted of, for example, asolenoid valve 503. Thissolenoid valve 503 serves to block or open the detourair passage tube 502. - As shown in
Fig. 5 , thedust collecting portion 70 includes acommunication case portion 72 having a communicatingpassage 71 which laterally extends in an upper portion thereof and a dustcollecting case portion 74 having the dust collectingchamber portion 73 which extends downward from the right end of thecommunication case portion 72 so as to collect the dust. - In the left bottom surface of the
communication case portion 72, there is provided anopening 72A, which is communicateed with the introducingopening 53A of thedust separation portion 52 as shown inFig. 5 . Aconnection opening 75 is provided in a left side wall portion 74A of the dustcollecting case portion 74, and a net filter NF3 is mounted to theconnection opening 75. - A
cover plate 170 is mounted on the outer wall portion of the dustcollecting case portion 74 to a position located outside the net filter NF3 and apart from the net filter NF3 by a predetermined distance, a. Anopening 170A is provided in a lower portion of thecover plate 170. - The
opening 170A of thecover plate 170 is connected to theconnection opening 56A of the suctionair passage portion 56. - Upon mounting the
dust collecting container 410 to the dust collecting unit chamber 22 of thecleaner body 11, as shown inFig. 5 , the introduction opening 53A of thedust separation portion 52 is connected to theopening 72A of thedust collecting container 410, and theopening 170A in thecover plate 170 of thedust collecting container 410 is connected to theconnection opening 56A of the suctionair passage portion 56 in thedust separation unit 400. - As shown in
Figs. 3 to 6 , thefilter unit 80 is opened in the rear surface, and includes a cylindricalaccommodating case 81 and apleat filter portion 100 mounted therein. On the front surface of afront wall portion 84 of theaccommodating case 81, thedust separation portion 52 is integrally mounted. Thepleat filter portion 100 has apleat filter 104 having a plurality of mountain portions extending radially. - The front wall portion 84 (refer to
Fig. 2 ) of theaccommodating case 81 has aconnection opening 84A (shown inFig. 6 ), which is connected to the suction air passage portion 56 (refer toFig. 5 ). The inside of theaccommodating case 81 and the suctionair passage portion 56 are communicated with each other via theconnection opening 84A. Theconnection opening 84A has a second blocking unit, which is constituted of, for example, ashutter 700. Theshutter 700 is operative to block or open theconnection opening 84A. - Further, the
accommodating case 81 has thereinside a return mechanism for returning air in theaccommodating case 81 to thedust separation portion 52. This return mechanism is constituted of, for example, areturn air passage 640 constituting an air passage. One end of the return mechanism is connected to a lower portion of thefront wall portion 84 of theaccommodating case 81, while the other end thereof is connected to the guideair passage tube 57 of thedust separation portion 52. To the other end of the returningair passage 640, there is provided, for example, asolenoid valve 641, which is operative to block or open thereturn air passage 640. - An external-air introducing air passage 650 (refer to
Fig. 2 ) for introducing external air into theaccommodating case 81 is formed at an upper portion of theaccommodating case 81. The external-air introducingair passage 650 includes, for example, asolenoid valve 651, which serves to to block or open the external-air introducingair passage 650. - A dust removal unit for removing dust from the
pleat filter portion 100 is disposed inside theaccommodating case 81. As shown in the illustration of the embodiment, the dust removal unit is located between thepleat filter portion 100 and thefront wall portion 84 of theaccommodating case 81 and constitutes a rotatingfan 800 that pivots on acentral axis 101A of thepleat filter portion 100. The rotatingfan 800 is configured to be rotated, for example, by external air introduced from the external-air introducingair passage 650. Aframe 801 of the rotatingfan 800 has at least oneprotrusion 802 in contact with one of the mountain portions of thepleat filter 104. - Upon rotating the rotating
fan 800, theprotrusion 802 gets over the mountain portions of thepleat filter 104, and accordingly, it is possible to provide vibrations to thepleat filter 104 to thereby shake off dust adhering to thepleat filter 104. As shown inFig. 7 , the orientation of theblades 803 of the rotatingfan 800 is set so as to receive the external air introduced from the external-air introducingair passage 650 to thereby flow the external air toward thepleat filter portion 100. As described above, the dust removal unit is configured to remove the dust from the pleat filter by means of the rotatingfan 800 that is rotated by the external air introduced from the external-air introducingair passage 650. The present invention is, however, not limited to this way of removing the dust. For example, the dust may be removed by rotating thepleat filter portion 100 by a motor (not shown) or the like, and the dust is dropped off from thepleat filter portion 100, for example, by bringing a fixed leaf spring (not shown) into contact with the mountain portions and causing the leaf spring to pick these mountain portions. In this case, since it is not necessary to rotate thefan 500, the more smooth air flow from the external-air introducing air passage into the filter unit may be achieved. - The control of the closing/opening operations of the
shutters solenoid valves - Hereunder, the operations of the vacuum cleaner of the structure mentioned above will be described with respect to
Fig. 8 as a conceptual diagram. - First, as shown in
Fig. 2 , thedust collecting unit 50 is mounted to the dust collecting unit chamber 22 of thecleaner body 11, and thedust collecting hose 12 is connected to theconnection port 11a of thecleaner body 11, and thesuction port body 15 is also connected to thehand operation tube 13 via theextension tube 14 as sown inFig. 1 . At this time, theshutters solenoid valves - Upon operating the
switch 13b of theoperation portion 13A, theelectric blower 24 is driven. When thiselectric blower 24 is driven, air is sucked from thesuction opening 24A of theelectric blower 24. As a result, a negative pressure operates on the inside of theaccommodating case 81 of thedust collecting unit 50 via theair passage tube 500 and the connectionair passage portion 25, and further operates on the inside of the dustcollecting case portion 74 or the separatingchamber portion 54 of thedust separation portion 52 via the suctionair passage portion 56. This negative pressure acts to thedust collecting hose 12, theextension tube 14 and thesuction port body 15 via the guideair passage tube 57 to thereby suck the dust through thesuction port body 15 together with air. - The thus sucked dust and air are guided into the
suction connecting port 57a of thedust collecting unit 50 via theextension tube 14 and thedust collecting hose 12. The dust and the air that have been sucked into thesuction connecting port 57a are introduced into the separatingchamber 54 of thedust separation portion 52 through the guideair passage tube 57, and the dust and air are then counterclockwisely rotated in the separatingchamber 54 as shown inFig. 4 . - Under the rotation of the air, the dust and the air are separated from each other by inertias, and the air is sucked into the
accommodating case 81 of thefilter unit 80, through the net filter NF1 (refer toFig. 5 ) of the firstdust separating unit 55 or the net filter NF2 (not shown) of theopening 154B and further through the suctionair passage portion 56. - On the other hand, the separated dust is introduced into the
communication case portion 72 in thedust collecting portion 70 of the introducingopening 53A in the separatingchamber 54 by an inertia force, together with a part of air. These introduced dust and air are sucked into thedust collecting chamber 73 through the communicatingpassage 71. in thecommunication case portion 72, and the dust is collected into thedust collecting chamber 73. - The air that sucked into the
dust collecting chamber 73 is then sucked into the suctionair passage portion 56 through the net filter NF3 and theopening 170A located below thecover plate 170, and further sucked into theaccommodating case 81 of thefilter unit 80. - The air sucked into the
accommodating case 81 is then sucked into the connectionair passage portion 25 of thecleaner body 11 through thepleat filter 104 of thepleat filter portion 100, and further sucked into thesuction opening 24A of theelectric blower 24. - The air sucked into the
suction opening 24A of theelectric blower 24 is then exhausted from anexhaust port 20H of thecleaner body 11 shown inFig. 2 , through the inside of theelectric blower 24. That is, the air flows as indicated by a chain line with arrows inFig. 8 . - Upon completing the cleaning and operating of the
switch 13a of thehand operation tube 13, theshutters solenoid valves electric blower 24 is driven at a predetermined power for a predetermined time period. - By closing the
shutters solenoid valves air passage 650 into the accommodating case 81 (refer toFig. 2 ) of thedust collecting unit 50 as shown inFig. 8 . Under such introduction of the air, the rotatingfan 800 is rotated, and the vibration is caused to thepleat filter 104 by the location of the protrusion, thereby dropping off dust adhering to thepleat filter 104. - Further, since the external air abutting against the
blades 803 of the rotatingfan 800 flows toward thepleat filter 104, the dust adhering to thepleat filter 104 can be effectively dropped off. - As indicated by broken lines with an arrow in
Fig. 8 , the external air introduced into theaccommodating case 81 is sucked into the upstream side of thedust separating portion 55, that is, into the guide air passage tube 57 (refer toFig. 2 ) of thedust collecting unit 50 through thereturn air passage 640, and further sucked into the separatingchamber 54 of thedust collecting unit 50 shown inFig. 5 . - The dust dropped off from the
pleat filter 104 passes through thereturn air passage 640, moves with the flow of the external air, and is carried into the separatingchamber 54 of thedust collecting unit 50. - The dust is separated from the external air in the separating
chamber 54 and carried into thedust collecting chamber 73, while the external air is sucked into the suctionair passage portion 56 through the net filter NF1 (refer toFig. 5 ) of the firstdust separating unit 55, or the net filter NF2 (not shown) of theopening 154B. - As indicated by the broken lines each with arrow in
Fig. 8 , the external air introduced into the suctionair passage portion 56 is sucked into the downstream side portion of theshutter 501, i.e., theair passage tube 500 shown inFig. 2 through the detourair passage tube 502 and further sucked into thesuction opening 24A of theelectric blower 24. Then, the drive of theelectric blower 24 is stopped after a predetermined time period. - In this manner, the dust dropped off from the
pleat filter 104 is carried into the separatingchamber 54 of thedust collecting unit 50. Therefore, when theelectric blower 24 is driven for performing cleaning, the dust that has been dropped off from thepleat filter 104 is prevented from being sucked up and re-adhering to thepleat filter 104. -
Figs. 9 and10 show a vacuum cleaner according to a second embodiment of the present invention. In the vacuum cleaner of the second embodiment, theair passage tube 500 and the inside of theaccommodating case 81 are communicated through thedetour air passage 900 constituting a detour passage, and the detourair passage tube 900 has a third dust separating unit. The third dust separating unit includes, for example, afilter 901 and asolenoid valve 902. - In the vacuum cleaner of the second embodiment, when the cleaning is performed, the
shutters solenoid valve 902 is closed, air flows as indicated by a chain line with arrows inFig. 10 , and dust is collected into the dust collectingchamber portion 73 as in the case of the first embodiment. - When the
switch 13a (refer toFig. 1 ) of theoperation portion 13A is operated by using thehand operation tube 13, theshutters solenoid valves 902 is opened. Theelectric blower 24 is driven at a predetermined power for a predetermined time period. - When the
shutters air passage 650 into theaccommodating case 81 of thedust collecting unit 50. This introduction of the air causes dust adhering to thepleat filter 104 to drop off therefrom as in the case of the first embodiment. The external air introduced into theaccommodating case 81 is sucked into theair passage tube 500 through thedetour air passage 900, and further sucked into thesuction opening 24A of theelectric blower 24, as indicated by the broken lines each with arrow inFig. 10 . - The dust dropped off from the
pleat filter 104 passes through thedetour air passage 900 and moves with the flow of the external air, as in the case of the first embodiment. Because the detourair passage tube 900 has afilter 901, the dust is caught by thefilter 901, and only the air is sucked into theair passage tube 500. - In this way, the dust dropped off from the
pleat filter 104 is carried into the detourair passage tube 900 and caught by thefilter 901. Therefore, when theelectric blower 24 is driven for performing cleaning, the dust that has been dropped off thepleat filter 104 is prevented from being sucked up and re-adhering to thepleat filter 104. - According to the second embodiment, the
shutter 600, it is not necessary to locate thereturn air passage 640 or thesolenoid valve 641. - The present invention is not limited to the above-described first and second embodiments, and a vacuum cleaner of a type using a paper pack filter may be utilized instead of the
dust separation portion 52 and thedust collecting portion 70. - It is to be noted that the present invention is not limited to the described embodiment and many other changes and modifications may be made without departing from the scopes of the appended claims.
- In the above-described embodiments, although the present invention has been applied to a vacuum cleaner, the present invention is not restricted thereto. For example, the present invention is also applicable to an air-conditioning system and the like in such a way as to drop off dust from a filter in the air-conditioning system and the like.
Claims (8)
- A vacuum cleaner comprising:an electric blower for sucking dust through a dust suction port;a first dust separating unit for separating the dust and air sucked into the dust suction port from each other;a second dust separating unit for separating the dust and air passing through the first separating unit;a first blocking unit for blocking an air passage located on a downstream side of the second dust separating unit and on an upstream side of the electric blower;a second blocking unit for blocking an air passage between the first dust separating unit and the second dust separating unit;a detour air passage communicating an upstream portion of the electric blower with a downstream portion of the first dust separating unit;a third blocking unit for blocking the detour air passage;a dust removal unit for dropping off the dust adhering to the second dust separating unit;an external-air introducing air passage for introducing external air toward the upstream side of the second dust separating unit;a control unit for controlling the first, second and third blocking units; anda return air passage for returning the dust dropped off by the dust removal unit toward the upstream side of the first dust separating unit by the external air introduced from the external-air introducing air passage so that the returned dust is collected by the first dust separating unit.
- The vacuum cleaner according to claim 1, wherein the second dust separating unit is provided with a pleat filter, and the dust removal unit is provided with a rotating fan contacting to the pleat filter and driven by the external air introduced from the external-air introducing air passage to thereby drop off dust collected by the pleat filter.
- A vacuum cleaner comprising:an electric blower for sucking dust through a dust suction port;a first dust separating unit for separating the dust and air sucked into the dust suction port from each other;a second dust separating unit for separating the dust and air passing through the first separating unit;a first blocking unit for blocking an air passage located on a downstream side of the second dust separating unit and on an upstream side of the electric blower;a second blocking unit for blocking an air passage between the first dust separating unit and the second dust separating unit;a dust removal unit for introducing external air toward an upstream side of the second dust separating unit and dropping off dust adhering to the second dust separating unit by the external air;a detour air passage flowing the introduced external air to a downstream side of the second dust separating unit; anda third blocking unit for catching the dust passing through the detour air passage together with the external air.
- The vacuum cleaner according to claim 3, wherein the second dust separating unit is provided with a pleat filter, and the dust removal unit is provided with a rotating fan contacting to the pleat filter and driven by the external air introduced by an external-air introducing air passage to thereby drop off dust collected by the pleat filter.
- The vacuum cleaner according to claim 3, further comprising:a return air passage for returning the dust dropped off by the dust removal unit toward the upstream side of the first dust separating unit by the external air introduced by the dust removal unit so that the returned dust is collected by the first dust separating unit.
- A vacuum cleaner comprising:an electric blower for sucking dust through a suction connecting port;a dust separating unit for separating the dust and air sucked into the suction connecting port from each other to thereby collect the dust;a collecting unit for collecting the dust passing through the dust separating unit, the collecting unit being provided separately from the dust separating unit;a dust removal unit for dropping off the dust collected by the collecting unit; anda return mechanism for returning the dust dropped off from the collecting unit by the dust removal unit toward an upstream side of the dust separating unit,the dust returned by the return mechanism being collected by the dust separating unit.
- The vacuum cleaner according to claim 6, further comprising an external-air introducing air passage provided for introducing external air toward the upstream side of the dust separating unit, wherein the return mechanism has a return air passage configured to return the dust dropped off from the collecting unit by the dust removal unit toward the upstream side of the dust separating unit by the external air introduced through the external-air introducing air passage.
- The vacuum cleaner according to claim 7, wherein the collecting unit has a pleat filter, and the dust removal unit is provided with a rotating fan contacting the pleat filter and driven by the external air introduced from the external-air introducing air passage to thereby drop off dust collected by the pleat filter.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2006099864A JP4041150B2 (en) | 2006-03-31 | 2006-03-31 | Electric vacuum cleaner |
EP07740019A EP2002774A4 (en) | 2006-03-31 | 2007-03-28 | Vacuum cleaner |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP07740019.0 Division | 2007-03-28 |
Publications (1)
Publication Number | Publication Date |
---|---|
EP2561786A1 true EP2561786A1 (en) | 2013-02-27 |
Family
ID=38563410
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP12187314A Withdrawn EP2561786A1 (en) | 2006-03-31 | 2007-03-28 | Vacuum cleaner |
EP07740019A Withdrawn EP2002774A4 (en) | 2006-03-31 | 2007-03-28 | Vacuum cleaner |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP07740019A Withdrawn EP2002774A4 (en) | 2006-03-31 | 2007-03-28 | Vacuum cleaner |
Country Status (7)
Country | Link |
---|---|
US (1) | US20090133212A1 (en) |
EP (2) | EP2561786A1 (en) |
JP (1) | JP4041150B2 (en) |
KR (1) | KR101074541B1 (en) |
CN (1) | CN101466296B (en) |
RU (1) | RU2396066C2 (en) |
WO (1) | WO2007114141A1 (en) |
Families Citing this family (15)
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JP4550027B2 (en) * | 2006-08-07 | 2010-09-22 | 三菱電機株式会社 | Vacuum cleaner |
US20090165825A1 (en) * | 2007-12-27 | 2009-07-02 | Daewoo Electronics Corporation | Vacuum cleaner |
KR101052143B1 (en) * | 2008-10-10 | 2011-07-26 | 엘지전자 주식회사 | Vacuum cleaner |
WO2010041902A2 (en) * | 2008-10-10 | 2010-04-15 | 엘지전자주식회사 | Vacuum cleaner |
KR101245673B1 (en) | 2012-07-12 | 2013-03-20 | 이춘우 | Vacuum cleaner |
KR101304213B1 (en) | 2012-07-12 | 2013-09-10 | 이춘우 | Electric vacuum cleaner |
DE102013019224A1 (en) * | 2013-11-15 | 2015-05-21 | Nilfisk-Advance A/S | Vacuum cleaner with pivoting flap |
DE102015108558A1 (en) * | 2015-05-29 | 2016-12-01 | Vorwerk & Co. Interholding Gmbh | air filter |
DE102016100820A1 (en) * | 2016-01-19 | 2017-07-20 | Vorwerk & Co. Interholding Gmbh | vacuum cleaning |
CN109890666B (en) | 2016-10-20 | 2022-03-11 | 康明斯滤清系统知识产权公司 | Discontinuous directional protrusions of flat sheet |
US11376541B2 (en) | 2016-12-15 | 2022-07-05 | Cummins Filtration Ip, Inc. | Tetrahedral filter media |
EP3586710B1 (en) * | 2017-02-27 | 2022-06-15 | Skybest Electric Appliance (Suzhou) Co., Ltd. | Vacuum cleaner having self-cleaning function and self-cleaning method therefor |
CN108497996B (en) * | 2017-02-27 | 2023-08-18 | 天佑电器(苏州)有限公司 | Dust collector with self-cleaning function and self-cleaning method thereof |
JP6910864B2 (en) * | 2017-06-22 | 2021-07-28 | 東芝ライフスタイル株式会社 | Electric cleaning device |
JP6933924B2 (en) * | 2017-06-23 | 2021-09-08 | 東芝ライフスタイル株式会社 | Electric cleaning device |
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- 2007-03-28 EP EP12187314A patent/EP2561786A1/en not_active Withdrawn
- 2007-03-28 WO PCT/JP2007/056581 patent/WO2007114141A1/en active Application Filing
- 2007-03-28 EP EP07740019A patent/EP2002774A4/en not_active Withdrawn
- 2007-03-28 CN CN2007800196496A patent/CN101466296B/en not_active Expired - Fee Related
- 2007-03-28 RU RU2008143222/12A patent/RU2396066C2/en not_active IP Right Cessation
- 2007-03-28 KR KR1020087023932A patent/KR101074541B1/en not_active IP Right Cessation
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Also Published As
Publication number | Publication date |
---|---|
US20090133212A1 (en) | 2009-05-28 |
EP2002774A2 (en) | 2008-12-17 |
EP2002774A9 (en) | 2009-05-06 |
EP2002774A4 (en) | 2012-03-07 |
JP4041150B2 (en) | 2008-01-30 |
WO2007114141A1 (en) | 2007-10-11 |
CN101466296B (en) | 2012-06-20 |
RU2396066C2 (en) | 2010-08-10 |
RU2008143222A (en) | 2010-05-10 |
KR20080109791A (en) | 2008-12-17 |
KR101074541B1 (en) | 2011-10-17 |
JP2007268124A (en) | 2007-10-18 |
CN101466296A (en) | 2009-06-24 |
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