EP1621125B1 - Intake nozzle and vacuum cleaner having the same - Google Patents

Intake nozzle and vacuum cleaner having the same Download PDF

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Publication number
EP1621125B1
EP1621125B1 EP05254803A EP05254803A EP1621125B1 EP 1621125 B1 EP1621125 B1 EP 1621125B1 EP 05254803 A EP05254803 A EP 05254803A EP 05254803 A EP05254803 A EP 05254803A EP 1621125 B1 EP1621125 B1 EP 1621125B1
Authority
EP
European Patent Office
Prior art keywords
air
nozzle
intake
lever
cut
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.)
Expired - Fee Related
Application number
EP05254803A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1621125A2 (en
EP1621125A3 (en
Inventor
Dong Youl 102-402 Seojin Apt. Lee
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
LG Electronics Inc
Original Assignee
LG Electronics Inc
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by LG Electronics Inc filed Critical LG Electronics Inc
Publication of EP1621125A2 publication Critical patent/EP1621125A2/en
Publication of EP1621125A3 publication Critical patent/EP1621125A3/en
Application granted granted Critical
Publication of EP1621125B1 publication Critical patent/EP1621125B1/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • 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
    • A47L9/02—Nozzles
    • 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
    • A47L9/02—Nozzles
    • A47L9/04—Nozzles with driven brushes or agitators
    • A47L9/0405—Driving means for the brushes or agitators
    • A47L9/0416—Driving means for the brushes or agitators driven by fluid pressure, e.g. by means of an air turbine

Definitions

  • the present invention relates to a vacuum cleaner, and more particularly, to an intake nozzle and vacuum cleaner having the same.
  • the present invention is suitable for a wide scope of applications, it is particularly suitable for adjusting a rotational speed of an agitator.
  • a vacuum cleaner is an appliance for cleaning a carpet, a normal room floor and the like.
  • polluted air containing particles is sucked up by driving an air intake device provided within a cleaner body to generate an air-sucking force, the particles are separated from the polluted air for dust collecting, and the particle-removed air is then discharged to an outside of the cleaner.
  • the vacuum cleaner consists of a cleaner body (not shown in the drawing) provided with an air intake device (not shown in the drawing) including a motor and a blower and a dust collector (not shown in the drawing) collecting the particles separated from the polluted air, an intake nozzle 10 moving along a bottom to be cleaned to suck the polluted air containing the particles, and a connecting pipe (not shown in the drawing) guiding the air sucked by the intake nozzle to the dust collector of the cleaner body.
  • the dust collector of the cleaner body includes a cyclon type dust-collecting box or a general filtering type dust-collecting bag.
  • the connecting pipe includes an extension pipe 5 having one end connected to the intake nozzle, a flexible connecting hose having one end connected to the other end of the extension pipe and the other end connected to the cleaner body, and a handle provided to the other end of the extension pipe.
  • FIG. 1 An intake nozzle provided to a general vacuum cleaner according to a related art is explained with reference to FIG. 1 as follows.
  • an intake nozzle 10 includes a nozzle case having an upper case (not shown in the drawing) configuring an exterior and a lower case 11 to have an empty space therein and an air intake port 12 provided to a bottom of the nozzle case, i.e., a bottom of the lower case.
  • a turbine 14 is provided within the nozzle case to rotate the agitator 13.
  • Rollers 15 are provided to both front sides of the lower case to smooth a motion of the intake nozzle 10.
  • rotational shafts (not shown in the drawing) supported by both ends of the air intake port 12 are projected from both ends of the agitator 13 to work as a rotation center of the agitator 13.
  • a spiral brush 13a is provided to an outer circumference of the agitator 13 to facilitate particles to be separated from the floor.
  • the rotational turbine 14 is configured to be rotated by the air introduced via the air intake port 12 to flow toward the extension pipe 5. And, the rotational turbine 14 is connected to the agitator by a belt 16. A driven pulley 17 and a driving pulley 18 are provided to the agitator 13 and a rotational shaft of the rotational turbine 14, respectively. And, the belt 16 is hung on the driven and driving pulleys 17 and 18. Hence, a rotational force of the rotational turbine 14 is transferred to the agitator 13.
  • the rotational force of the rotating rotational turbine 14 is transferred to the agitator 13 via the belt 16 to rotate the agitator 13. While the agitator 13 is being rotated, the brush 12a can separate particles from the floor.
  • the particles separated from the floor in the above-explained manner are introduced into the air intake port together with air to be guided to the dust-collector of the cleaner body via the extension pipe.
  • the dust collector removes the particles from the polluted air having been introduced into the dust collector to discharge the particle-removed air to an outside of the cleaner body.
  • Document JP 06 086744 discloses a vacuum cleaner head having a change lever for selecting a suitable cleaning process for a particular floor type.
  • Document DE 4243235 discloses a vacuum cleaner head that adjusts the rotational speed of a rotary brush by a touch sensor electrically connected to an electric motor driving the rotary brush.
  • the present invention is directed to an intake nozzle and vacuum cleaner having the same that substantially obviate one or more problems due to limitations and disadvantages of the related art.
  • An object of the present invention is to provide an intake nozzle and vacuum cleaner having the same, by which a rotational speed of an agitator is variable.
  • an intake nozzle of a vacuum cleaner includes a nozzle case, a first air intake port provided to a bottom of the nozzle case to suck an air containing dust by an air intake force generated from driving an air intake device, an agitator rotatably provided to the first air intake port to agitate the dust on a floor, and a speed adjusting device varying a rotational speed of the agitator.
  • the speed adjusting device raises the rotational speed of the agitator if the nozzle case is landed on the floor and wherein the speed adjusting device lowers the rotational speed of the agitator if the nozzle case is separated from the floor.
  • the speed adjusting device varies the rotational speed of the agitator according to a status of the floor on which the nozzle case is landed.
  • the speed adjusting device includes a rotational turbine provided to an air passage formed within the nozzle case to rotate the agitator, the rotational turbine rotated by a flow of the air introduced via the first air intake port and an air flow adjusting device provided to the nozzle case to vary a rotational speed of the rotational turbine by adjusting a flux of the air introduced into the first air intake port.
  • the air flow adjusting device includes a chamber provided to the air passage of the nozzle case, the chamber provided with a second air intake port through which the air introduced via the first air intake port passes and an external air supply port via which an external air introduced via one side of the nozzle case passes, the chamber accommodating the rotational turbine rotated by the air introduced via the second air intake port and a cut-off unit adjusting an opening degree of the external air supply port to adjust a flux of the air passing through the second air intake port.
  • the cut-off unit includes a cut-off plate opening/closing the external air supply port and a lever unit connected to the cut-off plate to adjust the cut-off plate, the lever unit increasing a flux of the air sucked into the first air intake port in case of being pressed by the floor.
  • the lever unit includes a first lever having one side connected to the cut-off plate and the other side rotatably connected to a rotational shaft provided within the nozzle case and a second lever having one side configured to apply a force to the first lever and the other side configured to be pressed by the floor by being projected beneath the nozzle case.
  • the first lever is elastically supported by a first spring and the first spring returns the cut-off plate in a direction of opening the external air supply port.
  • a prescribed position between both ends of the second lever is rotatably connected to a lower part of the nozzle case.
  • a display window is provided to a topside of the nozzle case to check out the opening degree of the external air supply port.
  • the second lever moves the cut-off plate connected to the first lever to a position in the vicinity of the external air supply port.
  • the cut-off plate completely cuts off the external air supply port by an intake force within the chamber at a position in the vicinity of the external air supply port.
  • the speed adjusting device further includes an auxiliary air passage guiding the external air to an inside of the chamber to rotate the rotational turbine and a passage opening/closing portion selectively opening the auxiliary air passage to prevent the air passage from being blocked.
  • the passage opening/closing portion includes an elastic member opened/closed by a difference between a pressure within the chamber and an atmospheric pressure outside the nozzle case.
  • a vacuum cleaner including a cleaner body provided with a dust collector collecting dust by separating dust and an intake nozzle communicating with the dust collector of the cleaner body, the intake nozzle moving along a floor to suck an air including the dust.
  • the intake nozzle includes a nozzle case, a first air intake port provided to a bottom of the nozzle case to suck the air including the dust by an air intake force generated from driving an air intake device, an agitator rotatably provided to the first air intake port to agitate the dust on the floor, and a speed adjusting device varying a rotational speed of the agitator.
  • vacuum cleaners are classified into a canister type vacuum cleaner and an upright type vacuum cleaner in general.
  • the canister type vacuum cleaner includes a cleaner body, an intake nozzle separated from the cleaner body, and a connecting pipe mutually connecting the cleaner body and the intake nozzle together.
  • the upright type vacuum cleaner includes an intake nozzle and a cleaner body joined to an upper part of the intake nozzle.
  • the canister type vacuum cleaner is described as a vacuum cleaner having an intake nozzle according to one embodiment of the present invention.
  • a vacuum cleaner having an intake nozzle includes an intake nozzle 100 moving along a floor to suck an air containing particles, a cleaner body 200, and a connecting pipe 300 mutually connecting the intake nozzle 100 and the cleaner body 200 together to guide a polluted air to the cleaner body 200.
  • the cleaner body 200 provided are an air intake device (not shown in the drawing) generating an air intake force and an electric/electronic unit (not shown in the drawing) to control the vacuum cleaner.
  • the air intake device includes a motor and a fan. Wheels are rotatably provided to both sides of the cleaner body 200 to enable the cleaner body 200 to move on the floor smoothly, respectively. And, an exhaust portion 221 is provided to each of the wheels 220 to discharge an particle-removed air.
  • a dust collector 210 is detachably provided to a front side of the cleaner body 200 for the separation and storage of the particles such as dust and the like. And, a dust collector loading space is provided to the front side of the cleaner body 200 to accommodate the dust collector 210.
  • the particles such as dust and the like are introduced into the dust collector 210 to be collected by a cyclon system or a filtration system using a filter device.
  • the dust collector 210 can collect dust using both of the cyclon system and the filtration system using the filter device.
  • the connecting pipe 300 includes a hard extension pipe 310 having one end connected to the intake nozzle 100, a flexible connecting hose 330 having one end connected to the other end of the extension pipe 310 and the other end connected to the cleaner body 200, and a handle 320 provided to a portion of the other end of the extension pipe 310.
  • FIGs. 3 to 8 A configuration of the intake nozzle 100 according to the present invention is explained with reference to FIGs. 3 to 8 as follows.
  • the intake nozzle 100 includes a nozzle case forming an exterior, a first air intake port 120 provided to a bottom o the nozzle case 110, an agitator 130 rotatably provided to the first air intake port 120 to separate particles from a floor, and a speed adjusting device adjusting a rotational speed of the agitator 130.
  • the nozzle case 110 includes an upper case 111 and a lower case 112 provided under the upper case 111. And, a prescribed space is provided within the nozzle case 110 to accommodate the speed adjusting device adjusting the rotational speed of the agitator 130 and the like.
  • moving wheels 110a are rotatably provided to both lower front sides and a lower rear part of the lower case 112, respectively to facilitate a movement of the intake nozzle 110.
  • the first air intake port 120 is formed long in right-to-left direction to perforate a front part of the lower case 112. Hence, by an air intake force generated from the driven air intake device, external air is introduced into the nozzle case 110 together with the particles on the floor via the first air intake port 120 and is then introduced into the extension pipe 310 via an air passage provided within the nozzle case 110.
  • the agitator 120 includes a cylindrical body 131, a rotational shaft (not shown in the drawing) projected from both ends of the body 131 in a lateral direction, and a dust agitating portion 132 agitating dust on the floor to be cleaned.
  • the rotational shaft is detachably assembled to both sides of the first air intake port 120 and is rotatably connected to a rotational shaft loading portion 133 fixed by the lower and upper cases 112 and 111.
  • the rotational shaft is rotatably inserted in an insertion recess (not shown in the drawing) provided to the rotational shaft loading portion 133.
  • the dust agitating portion 132 includes a plurality of 'V' type grooves formed on an outer circumference of the agitator body 131 in a length direction.
  • the dust agitating portion 132 can include a groove formed on the outer circumference of the body 131 in a spiral direction, a brush provided to the outer circumference of the body 131 in the spiral direction or the like.
  • the speed adjusting device raises the rotational speed of the agitator 130 if the nozzle case 110 of the intake nozzle is landed on the floor or lowers the rotational speed of the agitator 130 if the nozzle case 110 is separated from the floor.
  • the speed adjusting device can be configured to vary the rotational speed of the agitator 130 according to a status of the floor on which the nozzle case 110 is landed. Namely, the rotational speed of the agitator 130 varies according to a degree of pressurization applied to a bottom of the nozzle case 110 by the floor.
  • the speed adjusting device includes a rotating device rotated by a flow of air sucked via the first air intake port 120 to rotate the agitator and an air flow adjusting device varying a rotational speed of the rotating device by adjusting a flux of the air sucked via the first air intake port 120.
  • the rotating device includes a rotational turbine 140 provided within the nozzle case 110 to guide the air sucked via the first air intake port 120 to the extension pipe 310.
  • the rotational turbine 140 is rotated by a flow of the air introduced via the first air intake port 120, and a plurality of wings 141 are provided to a circumference of the rotational turbine 140.
  • the rotational turbine 140 is rotatably accommodated within a prescribed chamber 113 provided to the air passage within the nozzle case 110.
  • the chamber 113 is provided between the first air intake port 120 and the extension pipe 310 to be passed through by the air sucked via the first air intake port 120.
  • the air introduced via the first air intake port 120 collides with the wings 141 of the rotational turbine 140 to rotate the rotational turbine 140.
  • the rotational speed of the agitator 130 varies directly as the rotational speed of the rotational turbine.
  • the rotational turbine 140 transfers a rotational force to the agitator 130 via a belt 142.
  • a turbine rotational shaft 143 extending in one direction to a predetermined length is provided to a center of the rotational turbine 140 and the belt 142 is wound on a driving pulley 144 provided to the turbine rotational shaft 143 and a driven pulley 134 provided to the rotational shaft of the agitator 130, whereby the rotational force of the rotational turbine is transferred to the agitator 130.
  • rugged portions are provided to outer circumferential surfaces of the driving and driven pulleys 144 and 134 and an inside surface of the belt 142 to prevent the belt 142 from slipping.
  • a diameter of the driving pulley 144 is smaller than that of the driven pulley 134.
  • the turbine rotational shaft 143 is rotatably inserted in a packing portion 145 to be supported.
  • the packing portion 145 is supported by a first support portion 114 provided to the lower case 112 and a second support portion (not shown in the drawings) provided to the upper case 111.
  • the air flow adjusting device which is provided to the nozzle case 110, adjusts a flux of the air rotating the rotational turbine 140 to change the rotational speed of the agitator 130 according to whether the nozzle case 110 is landed on the floor and/or according to a status of the floor.
  • the status of the floor means a surface state of the floor to be cleaned such as a hard floor, which includes a wooden floor, a laminated floor or the like, and a soft floor including a carpet, a bedding sheet or the like.
  • the air flow adjusting device includes a second air intake port 150 provided to a prescribed position of a wall of the chamber 113 wherein the air having introduced via the first air intake port 120 passes through the second air intake port 150 to rotate the rotational turbine 140 and a flux adjusting portion 160 adjusting a flux of the air passing through the second air intake port 150 to rotate the rotational turbine 140.
  • the second air intake port 150 is provided to a front side of the chamber 113. And, a front wall of the chamber 113 extends in right-to-left direction to partition an internal space of the nozzle case 110 into front and rear spaces.
  • the air having introduced via the first air intake port 120 is introduced into the chamber 113 via the second air intake port 150 to rotate the rotational turbine 140.
  • the flux adjusting portion 160 includes an external air supply port 161 provided to one side wall of the chamber 113 to allow the external air introduced via one side of the nozzle case 110 to pass through and a cut-off unit 162 adjusting an opening degree of the external air supply port 161 to adjust a flux of the air introduced into the second air intake port 150.
  • a lateral side of the chamber 113 is perforated to form the external air supply port 161.
  • an external air intake port 115 is formed at one side of the nozzle case to communicate with the external air supply port 161.
  • the external air intake port 115 is preferably formed at a prescribed position of the nozzle case 110, and more preferably, at one side of a rear portion of the upper case 110 so that the external air introduced into the rear space of the nozzle case can be introduced into the chamber via the external air supply port 161.
  • the cut-off unit 162 adjusts a current speed and flux of the air that passes through the second air intake port 150.
  • the opening degree of the external supply port 161 is raised, the flux of the air introduced into the second air intake port 150 is reduced. If the opening degree of the external supply port 161 is lowered, the flux of the air introduced into the second air intake port 150 is increased.
  • the cut-off unit 162 includes a cut-off plate 162a opening or closing the external air supply port 161 and a lever unit 163 connected to the cut-off plate 162a to adjust the opening degree of the external air supply port 161.
  • the lever unit 163 adjusts the cut-off plate 162a so that the flux of the air sucked into the first air intake port 120 can be increased in case of being pressurized by the floor.
  • the flux of the air sucked via the external air supply port 161 is adjusted.
  • a lower end of the external air supply port 161 is preferably spaced apart from a lower end of a lateral side of the chamber 113, and more particularly, from an upper side of the lower case 112 with a predetermined height in-between.
  • a lower end of the cut-off plate 162a is preferably spaced apart from the upper side of the lower case 112 with a predetermined height.
  • the lever unit 163 includes a first lever 163a and a second lever 163b connected to the first lever 163a.
  • the lever unit 163 moves the cut-off plate 162a toward the external air supply port 161 so that a flux of the air passing through the external air supply port 161 is reduced if the nozzle case 110 of the intake nozzle 100 is landed on the floor.
  • the lever unit 163 is configured to make the cut-off plate 162 return in a direction getting far away from the external air supply port 161 to raise the flux of the air passing through the external air supply port 161 if the nozzle case 110 is separated from the floor.
  • the rotational speed of the agitator 130 is increased.
  • the rotational speed of the agitator 130 is reduced.
  • one end of the lever 163a is connected to the cut-off plate 162a and the other end of the lever 163a is rotatably connected to a first rotational shaft 112a projected upward from an inside of the nozzle case 110, and more particularly, from a rear inside of the lower case 112.
  • One side of the second lever 163b is configured to pressurize the first lever 163a. And, the other side of the second lever 163b, which is configured to be projected from a lower part of the nozzle case 110, can be pressurized by the floor.
  • the second lever 163b if the second lever 163b is pressed by the floor in a manner that the nozzle case is landed on the floor, the second lever 163b turns the first lever 163a so that the cut-off plate 162a reduces the opening degree of the external air supply port 161.
  • the second lever 163b moves the cut-off plate 162a connected to the first lever 163a toward the external air supply port 161.
  • a prescribed part between both ends of the second lever 163b is rotatably connected to the lower case 112. More preferably, the prescribed part between both of the ends of the second lever 16b corresponds to a middle part of the second lever 163b.
  • the first lever 163a is turned by the second lever 163b so that the cut-off plate 162a is moved toward the external air supply port 161 to reduce the flux of the air introduced into the external air supply port 161.
  • the second lever 163b is substantially bend to form a 'L' type bent portion 163c and is connected to the lower case 112 by a second rotational shaft 163d provided to the bent portion 163c to turn around the bent portion 163c.
  • one side of the second lever 163b is extended upward centering on the bent portion 163c and the other side of the second lever 163b is extended in a lateral direction centering on the bent portion 163c to be selectively pressurized by the floor to be cleaned.
  • the second lever 163b is turned.
  • a roller 163e is preferably provided to the other side of the second lever 163b to be brought into contact with the floor. Hence, a friction between the second lever 163b and the floor is minimized.
  • the lower case 112 is preferably provided with a perforated hole penetrated by one side of the second lever 163b in a vertical direction and an accommodating recess to accommodate the other side of the second lever 163b that is pressed by the floor.
  • first lever 163a is elastically supported by a first spring 163f that returns the cut-off plate 162a in a direction of opening the external air supply port 161.
  • the first spring 163f applies a restoring force to the first lever 163a to return the cut-off plate 162a so that the flux of the air introduced via the external air supply port 161 can be increased.
  • the first spring 163f may include a torsion spring provided to the first rotational shaft 112a.
  • a second spring 163g is preferably provided to the lower case 112 to pressurize the second lever 163b so that the other side of the second lever 163b is projected from the lower side of the lower case 112.
  • the second spring 163g is accommodated in the accommodating recess accommodating the second lever 163b to pressurize a top of the other side of the second lever 163b.
  • a connecting hole 163h is provided to the first lever 163a for the connection between the first and second levers 163a and 163b. In this case, one side of the second lever 163b is fitted in the connecting hole 163h.
  • the second lever 163b moves the cut-off plate 162a built in one body of the first lever 163a to a position in the vicinity of the external air supply port 161.
  • the cut-off plate 162a Once the cut-off plate 162a is moved to the position in the vicinity of the external air supply port 161, the cut-off plate 162a completely cuts off the external air supply port 161 by an intake force within the chamber 113.
  • a thickness of one side of the second lever 163b is preferably smaller than a width of the connecting hole 163h.
  • a display window 111a is provided to a topside of the nozzle case 110, i.e., a topside of the upper case 111 to check out the opening degree of the external air supply port 161.
  • the display window 111a is formed of a transparent material. And, a check piece 111b protruding in one body from the lever unit 163, and more particularly, from the first lever 163a is provided within the display window.
  • the intake nozzle 100 is preferably configured to prevent an overload of the motor and the rotational speed reduction of the agitator 130 in cleaning the floor covered with a carpet or blanket.
  • the nozzle case 110 is provided with an auxiliary air passage 164 guiding the external air into the chamber 113 selectively to rotate the rotational turbine 140 and a passage opening/closing portion 165 selectively opening/closing the auxiliary air passage 164.
  • the auxiliary air passage 164 includes an auxiliary air intake port 164a formed on a center of a topside of the upper case 111 and an auxiliary air supply port 164b provided over the second air intake port 150 to discharge the air to the rotational turbine 140 for the rotation of the rotational turbine 140.
  • the passage opening/closing portion 165 is opened/closed by a difference between an atmospheric pressure outside the nozzle case and an internal pressure within the chamber 113.
  • the passage opening/closing portion 165 may include an elastic member.
  • one side of the elastic member is preferably connected to a prescribed position of the auxiliary air passage 164, and more particularly, to an upper end of the auxiliary air supply port 164b and the other side of the elastic member is preferably supported by a rim of the auxiliary air supply port 164b to be bent toward an inside of the chamber 113.
  • the passage opening/closing portion 165 can be open more easily. If the elastic coefficient of the passage opening/closing portion 165 is raised higher, the passage opening/closing portion 165 can be opened in case of a high vacuum state within the chamber only.
  • the material of the passage opening/closing portion 165 needs to be appropriately selected according to performance of the motor, a cross-sectional area of the auxiliary air passage and the like.
  • the roller 163e of the second lever 163b is pressed by the carpet so that the external air supply port 161 is cut of by the cut-off plate 162a. If so, the intake force of the first air intake port 120 is raised and the rotational speed of the agitator 130 is increased.
  • the passage opening/closing portion 165 is bent toward the inside of the chamber 113 to open the auxiliary air supply port 164b.
  • the external air is introduced into the chamber 113 to rotate the rotational turbine 140.
  • the rotational force of the rotational turbine is transferred to the agitator 130 via the belt 142 to rotate the agitator 130. Particles on the carpet are then sucked into the first air intake port 120.
  • the motor and fan provided within the cleaner body are rotated to generate the air intake force. And, external air can be introduced into the intake nozzle 100 by the air intake force.
  • the intake nozzle 100 lies in a state of being separated from the floor to be cleaned, the air introduced via the first air intake port 120 and the external air intake port 115 passes through the second air intake port 150 and the external air supply port 161, respectively so that the flux and current speed of the air introduced into the second air intake port 150 are lowered.
  • the agitator 130 rotated by the rotational turbine 140 is rotated at a low rotational speed.
  • the cut-off plate 163 reduces the opening degree of the external air supply port 161. Hence, the flux and current speed of the air introduced from the first air intake port 120 to pass through the second air intake port 150 are increased.
  • both of the rotational speeds of the rotational turbine 140 and the agitator 130 are increased to enhance the performance of separating particles from the floor.
  • the polluted air introduced via the first air intake port 120 is passed through the chamber 113, is guided to the dust collector 210 of the cleaner body via the connecting pipe 300, and is then discharged outside via the blowing portion 221 of the wheel. In doing so, the particles of the polluted air are removed by the dust collector 210.
  • the rotational speed of the agitator 120 and the particle intake performance of the first air intake port 120 reach their maximum levels, respectively if the external air supply port 161 is completely cut off.
  • the passage opening/closing portion 165 of the auxiliary air passage 164 is opened to guide the external air to the inside of the chamber 113.
  • the air guided to the inside of the chamber 113 rotates the rotational turbine 140.
  • the rotational speed of the agitator 120 is raised to facilitate the suction of the particles on the carpet into the first air intake port 120 and to prevent the motor from being overloaded.
  • the external air supply port 161 is fully opened to reduce the flux and current speed of the air sucked into the second air intake port 150.
  • the present invention provides the following effects or advantages.
  • the present invention enhances the cleaning performance.
  • the present invention enhances the performance of separating dust from the floor.
  • the agitator is rotated with low power at low speed. Hence, the present invention prevents a user's hand from being injured by the agitator.
  • the intake nozzle is separated from the floor to change a spot to be cleaned, the flux and current speed of the air introduced into the first air intake port are lowered to reduce the intake noise of air.
  • the present invention prevents a user's clothes, a curtain and the like from being sucked into the intake nozzle.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Nozzles For Electric Vacuum Cleaners (AREA)
EP05254803A 2004-07-30 2005-08-01 Intake nozzle and vacuum cleaner having the same Expired - Fee Related EP1621125B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020040060413A KR101084122B1 (ko) 2004-07-30 2004-07-30 진공청소기의 흡입노즐

Publications (3)

Publication Number Publication Date
EP1621125A2 EP1621125A2 (en) 2006-02-01
EP1621125A3 EP1621125A3 (en) 2006-05-03
EP1621125B1 true EP1621125B1 (en) 2008-10-15

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP05254803A Expired - Fee Related EP1621125B1 (en) 2004-07-30 2005-08-01 Intake nozzle and vacuum cleaner having the same

Country Status (5)

Country Link
US (1) US20060021185A1 (ru)
EP (1) EP1621125B1 (ru)
KR (1) KR101084122B1 (ru)
DE (1) DE602005010334D1 (ru)
RU (1) RU2300303C2 (ru)

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Publication number Priority date Publication date Assignee Title
WO2006015309A2 (en) 2004-07-29 2006-02-09 Electrolux Care Products, Ltd Upright vacuum cleaner
US8738787B2 (en) 2005-04-20 2014-05-27 Limelight Networks, Inc. Ad server integration
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KR101084122B1 (ko) 2011-11-17
RU2005124250A (ru) 2007-02-10
KR20060011528A (ko) 2006-02-03
DE602005010334D1 (de) 2008-11-27
EP1621125A2 (en) 2006-02-01
EP1621125A3 (en) 2006-05-03
RU2300303C2 (ru) 2007-06-10

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